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-rw-r--r--gdb/Makefile.in17
-rw-r--r--gdb/NEWS7
-rw-r--r--gdb/README15
-rw-r--r--gdb/amd-dbgapi-target.c1966
-rw-r--r--gdb/amd-dbgapi-target.h116
-rw-r--r--gdb/amdgpu-tdep.c1367
-rw-r--r--gdb/amdgpu-tdep.h93
-rwxr-xr-xgdb/configure425
-rw-r--r--gdb/configure.ac52
-rw-r--r--gdb/configure.tgt23
-rw-r--r--gdb/doc/gdb.texinfo291
-rw-r--r--gdb/regcache.c3
-rw-r--r--gdb/solib-rocm.c679
-rw-r--r--gdb/testsuite/gdb.rocm/simple.cpp48
-rw-r--r--gdb/testsuite/gdb.rocm/simple.exp52
-rw-r--r--gdb/testsuite/lib/future.exp38
-rw-r--r--gdb/testsuite/lib/gdb.exp7
-rw-r--r--gdb/testsuite/lib/rocm.exp94
18 files changed, 5155 insertions, 138 deletions
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index c3711a0..049a14f 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -227,6 +227,9 @@ PTHREAD_LIBS = @PTHREAD_LIBS@
DEBUGINFOD_CFLAGS = @DEBUGINFOD_CFLAGS@
DEBUGINFOD_LIBS = @DEBUGINFOD_LIBS@
+AMD_DBGAPI_CFLAGS = @AMD_DBGAPI_CFLAGS@
+AMD_DBGAPI_LIBS = @AMD_DBGAPI_LIBS@
+
RDYNAMIC = @RDYNAMIC@
# Where is the INTL library? Typically in ../intl.
@@ -633,7 +636,8 @@ INTERNAL_CFLAGS_BASE = \
$(ZSTD_CFLAGS) $(BFD_CFLAGS) $(INCLUDE_CFLAGS) $(LIBDECNUMBER_CFLAGS) \
$(INTL_CFLAGS) $(INCGNU) $(INCSUPPORT) $(LIBBACKTRACE_INC) \
$(ENABLE_CFLAGS) $(INTERNAL_CPPFLAGS) $(SRCHIGH_CFLAGS) \
- $(TOP_CFLAGS) $(PTHREAD_CFLAGS) $(DEBUGINFOD_CFLAGS) $(GMPINC)
+ $(TOP_CFLAGS) $(PTHREAD_CFLAGS) $(DEBUGINFOD_CFLAGS) $(GMPINC) \
+ $(AMD_DBGAPI_CFLAGS)
INTERNAL_WARN_CFLAGS = $(INTERNAL_CFLAGS_BASE) $(GDB_WARN_CFLAGS)
INTERNAL_CFLAGS = $(INTERNAL_WARN_CFLAGS) $(GDB_WERROR_CFLAGS)
@@ -655,7 +659,7 @@ INTERNAL_LDFLAGS = \
CLIBS = $(SIM) $(READLINE) $(OPCODES) $(LIBCTF) $(BFD) $(ZLIB) $(ZSTD_LIBS) \
$(LIBSUPPORT) $(INTL) $(LIBIBERTY) $(LIBDECNUMBER) \
$(XM_CLIBS) $(GDBTKLIBS) $(LIBBACKTRACE_LIB) \
- @LIBS@ @GUILE_LIBS@ @PYTHON_LIBS@ \
+ @LIBS@ @GUILE_LIBS@ @PYTHON_LIBS@ $(AMD_DBGAPI_LIBS) \
$(LIBEXPAT) $(LIBLZMA) $(LIBBABELTRACE) $(LIBIPT) \
$(WIN32LIBS) $(LIBGNU) $(LIBGNU_EXTRA_LIBS) $(LIBICONV) \
$(GMPLIBS) $(SRCHIGH_LIBS) $(LIBXXHASH) $(PTHREAD_LIBS) \
@@ -693,6 +697,12 @@ SIM_OBS = @SIM_OBS@
# Target-dependent object files.
TARGET_OBS = @TARGET_OBS@
+# All target-dependent object files that require the amd-dbgapi
+# target to be available (used with --enable-targets=all).
+ALL_AMD_DBGAPI_TARGET_OBS = \
+ amdgpu-tdep.o \
+ solib-rocm.o
+
# All target-dependent objects files that require 64-bit CORE_ADDR
# (used with --enable-targets=all --enable-64-bit-bfd).
ALL_64_TARGET_OBS = \
@@ -1637,6 +1647,7 @@ ALLDEPFILES = \
alpha-netbsd-tdep.c \
alpha-obsd-tdep.c \
alpha-tdep.c \
+ amd-dbgapi-target.c \
amd64-bsd-nat.c \
amd64-darwin-tdep.c \
amd64-dicos-tdep.c \
@@ -1652,6 +1663,7 @@ ALLDEPFILES = \
amd64-ravenscar-thread.c \
amd64-sol2-tdep.c \
amd64-tdep.c \
+ amdgpu-tdep.c \
arc-linux-nat.c \
arc-tdep.c \
arm-bsd-tdep.c \
@@ -1793,6 +1805,7 @@ ALLDEPFILES = \
sh-tdep.c \
sol2-tdep.c \
solib-aix.c \
+ solib-rocm.c \
solib-svr4.c \
sparc-linux-nat.c \
sparc-linux-tdep.c \
diff --git a/gdb/NEWS b/gdb/NEWS
index 445d28e..882ea4c 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -244,6 +244,8 @@ GNU/Linux/LoongArch (gdbserver) loongarch*-*-linux*
GNU/Linux/CSKY (gdbserver) csky*-*linux*
+AMDGPU amdgcn-*-*
+
* MI changes
** The async record stating the stopped reason 'breakpoint-hit' now
@@ -338,6 +340,11 @@ GNU/Linux/CSKY (gdbserver) csky*-*linux*
GDB now supports floating-point on LoongArch GNU/Linux.
+* AMD GPU ROCm debugging support
+
+GDB now supports debugging programs offloaded to AMD GPUs using the ROCm
+platform.
+
*** Changes in GDB 12
* DBX mode is deprecated, and will be removed in GDB 13
diff --git a/gdb/README b/gdb/README
index fbe480f..9699f48 100644
--- a/gdb/README
+++ b/gdb/README
@@ -541,6 +541,21 @@ more obscure GDB `configure' options are not listed here.
speeds up various GDB operations such as symbol loading. Enabled
by default if libxxhash is found.
+`--with-amd-dbgapi=[auto,yes,no]'
+ Whether to use the amd-dbgapi library to support local debugging of
+ AMD GCN architecture GPUs.
+
+ When explicitly requesting support for an AMD GCN architecture through
+ `--enable-targets' or `--target', there is no need to use
+ `--with-amd-dbgapi': `configure' will automatically look for the
+ amd-dbgapi library and fail if not found.
+
+ When using --enable-targets=all, support for the AMD GCN architecture will
+ only be included if the amd-dbgapi is found. `--with-amd-dbgapi=yes' can
+ be used to make it a failure if the amd-dbgapi library is not found.
+ `--with-amd-dbgapi=no' can be used to prevent looking for the amd-dbgapi
+ library altogether.
+
`--without-included-regex'
Don't use the regex library included with GDB (as part of the
libiberty library). This is the default on hosts with version 2
diff --git a/gdb/amd-dbgapi-target.c b/gdb/amd-dbgapi-target.c
new file mode 100644
index 0000000..5f7de52
--- /dev/null
+++ b/gdb/amd-dbgapi-target.c
@@ -0,0 +1,1966 @@
+/* Target used to communicate with the AMD Debugger API.
+
+ Copyright (C) 2019-2022 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include "defs.h"
+
+#include "amd-dbgapi-target.h"
+#include "amdgpu-tdep.h"
+#include "async-event.h"
+#include "cli/cli-cmds.h"
+#include "cli/cli-style.h"
+#include "inf-loop.h"
+#include "inferior.h"
+#include "objfiles.h"
+#include "observable.h"
+#include "registry.h"
+#include "solib.h"
+#include "target.h"
+
+/* When true, print debug messages relating to the amd-dbgapi target. */
+
+static bool debug_amd_dbgapi = false;
+
+/* Make a copy of S styled in green. */
+
+static std::string
+make_green (const char *s)
+{
+ cli_style_option style (nullptr, ui_file_style::GREEN);
+ string_file sf (true);
+ gdb_printf (&sf, "%ps", styled_string (style.style(), s));
+ return sf.release ();
+}
+
+/* Debug module names. "amd-dbgapi" is for the target debug messages (this
+ file), whereas "amd-dbgapi-lib" is for logging messages output by the
+ amd-dbgapi library. */
+
+static const char *amd_dbgapi_debug_module_unstyled = "amd-dbgapi";
+static const char *amd_dbgapi_lib_debug_module_unstyled
+ = "amd-dbgapi-lib";
+
+/* Styled variants of the above. */
+
+static const std::string amd_dbgapi_debug_module_styled
+ = make_green (amd_dbgapi_debug_module_unstyled);
+static const std::string amd_dbgapi_lib_debug_module_styled
+ = make_green (amd_dbgapi_lib_debug_module_unstyled);
+
+/* Return the styled or unstyled variant of the amd-dbgapi module name,
+ depending on whether gdb_stdlog can emit colors. */
+
+static const char *
+amd_dbgapi_debug_module ()
+{
+ if (gdb_stdlog->can_emit_style_escape ())
+ return amd_dbgapi_debug_module_styled.c_str ();
+ else
+ return amd_dbgapi_debug_module_unstyled;
+}
+
+/* Same as the above, but for the amd-dbgapi-lib module name. */
+
+static const char *
+amd_dbgapi_lib_debug_module ()
+{
+ if (gdb_stdlog->can_emit_style_escape ())
+ return amd_dbgapi_lib_debug_module_styled.c_str ();
+ else
+ return amd_dbgapi_lib_debug_module_unstyled;
+}
+
+/* Print an amd-dbgapi debug statement. */
+
+#define amd_dbgapi_debug_printf(fmt, ...) \
+ debug_prefixed_printf_cond (debug_amd_dbgapi, \
+ amd_dbgapi_debug_module (), \
+ fmt, ##__VA_ARGS__)
+
+/* Print amd-dbgapi start/end debug statements. */
+
+#define AMD_DBGAPI_SCOPED_DEBUG_START_END(fmt, ...) \
+ scoped_debug_start_end (debug_infrun, amd_dbgapi_debug_module (), \
+ fmt, ##__VA_ARGS__)
+
+/* inferior_created observer token. */
+
+static gdb::observers::token amd_dbgapi_target_inferior_created_observer_token;
+
+const gdb::observers::token &
+get_amd_dbgapi_target_inferior_created_observer_token ()
+{
+ return amd_dbgapi_target_inferior_created_observer_token;
+}
+
+
+/* Big enough to hold the size of the largest register in bytes. */
+#define AMDGPU_MAX_REGISTER_SIZE 256
+
+/* amd-dbgapi-specific inferior data. */
+
+struct amd_dbgapi_inferior_info
+{
+ explicit amd_dbgapi_inferior_info (inferior *inf)
+ : inf (inf)
+ {}
+
+ /* Backlink to inferior. */
+ inferior *inf;
+
+ /* The amd_dbgapi_process_id for this inferior. */
+ amd_dbgapi_process_id_t process_id = AMD_DBGAPI_PROCESS_NONE;
+
+ /* The amd_dbgapi_notifier_t for this inferior. */
+ amd_dbgapi_notifier_t notifier = -1;
+
+ /* The status of the inferior's runtime support. */
+ amd_dbgapi_runtime_state_t runtime_state = AMD_DBGAPI_RUNTIME_STATE_UNLOADED;
+
+ /* This value mirrors the current "forward progress needed" value for this
+ process in amd-dbgapi. It is used to avoid unnecessary calls to
+ amd_dbgapi_process_set_progress, to reduce the noise in the logs.
+
+ Initialized to true, since that's the default in amd-dbgapi too. */
+ bool forward_progress_required = true;
+
+ std::unordered_map<decltype (amd_dbgapi_breakpoint_id_t::handle),
+ struct breakpoint *>
+ breakpoint_map;
+
+ /* List of pending events the amd-dbgapi target retrieved from the dbgapi. */
+ std::list<std::pair<ptid_t, target_waitstatus>> wave_events;
+};
+
+static amd_dbgapi_event_id_t process_event_queue
+ (amd_dbgapi_process_id_t process_id = AMD_DBGAPI_PROCESS_NONE,
+ amd_dbgapi_event_kind_t until_event_kind = AMD_DBGAPI_EVENT_KIND_NONE);
+
+static const target_info amd_dbgapi_target_info = {
+ "amd-dbgapi",
+ N_("AMD Debugger API"),
+ N_("GPU debugging using the AMD Debugger API")
+};
+
+static amd_dbgapi_log_level_t get_debug_amd_dbgapi_lib_log_level ();
+
+struct amd_dbgapi_target final : public target_ops
+{
+ const target_info &
+ info () const override
+ {
+ return amd_dbgapi_target_info;
+ }
+ strata
+ stratum () const override
+ {
+ return arch_stratum;
+ }
+
+ void close () override;
+ void mourn_inferior () override;
+ void detach (inferior *inf, int from_tty) override;
+
+ void async (bool enable) override;
+
+ bool has_pending_events () override;
+ ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override;
+ void resume (ptid_t, int, enum gdb_signal) override;
+ void commit_resumed () override;
+ void stop (ptid_t ptid) override;
+
+ void fetch_registers (struct regcache *, int) override;
+ void store_registers (struct regcache *, int) override;
+
+ void update_thread_list () override;
+
+ struct gdbarch *thread_architecture (ptid_t) override;
+
+ void thread_events (int enable) override;
+
+ std::string pid_to_str (ptid_t ptid) override;
+
+ const char *thread_name (thread_info *tp) override;
+
+ const char *extra_thread_info (thread_info *tp) override;
+
+ bool thread_alive (ptid_t ptid) override;
+
+ enum target_xfer_status xfer_partial (enum target_object object,
+ const char *annex, gdb_byte *readbuf,
+ const gdb_byte *writebuf,
+ ULONGEST offset, ULONGEST len,
+ ULONGEST *xfered_len) override;
+
+ bool stopped_by_watchpoint () override;
+
+ bool stopped_by_sw_breakpoint () override;
+ bool stopped_by_hw_breakpoint () override;
+
+private:
+ /* True if we must report thread events. */
+ bool m_report_thread_events = false;
+
+ /* Cache for the last value returned by thread_architecture. */
+ gdbarch *m_cached_arch = nullptr;
+ ptid_t::tid_type m_cached_arch_tid = 0;
+};
+
+static struct amd_dbgapi_target the_amd_dbgapi_target;
+
+/* Per-inferior data key. */
+
+static const registry<inferior>::key<amd_dbgapi_inferior_info>
+ amd_dbgapi_inferior_data;
+
+/* The async event handler registered with the event loop, indicating that we
+ might have events to report to the core and that we'd like our wait method
+ to be called.
+
+ This is nullptr when async is disabled and non-nullptr when async is
+ enabled.
+
+ It is marked when a notifier fd tells us there's an event available. The
+ callback triggers handle_inferior_event in order to pull the event from
+ amd-dbgapi and handle it. */
+
+static async_event_handler *amd_dbgapi_async_event_handler = nullptr;
+
+/* Return the target id string for a given wave. */
+
+static std::string
+wave_target_id_string (amd_dbgapi_wave_id_t wave_id)
+{
+ amd_dbgapi_dispatch_id_t dispatch_id;
+ amd_dbgapi_queue_id_t queue_id;
+ amd_dbgapi_agent_id_t agent_id;
+ uint32_t group_ids[3], wave_in_group;
+ std::string str = "AMDGPU Wave";
+
+ amd_dbgapi_status_t status
+ = amd_dbgapi_wave_get_info (wave_id, AMD_DBGAPI_WAVE_INFO_AGENT,
+ sizeof (agent_id), &agent_id);
+ str += (status == AMD_DBGAPI_STATUS_SUCCESS
+ ? string_printf (" %ld", agent_id.handle)
+ : " ?");
+
+ status = amd_dbgapi_wave_get_info (wave_id, AMD_DBGAPI_WAVE_INFO_QUEUE,
+ sizeof (queue_id), &queue_id);
+ str += (status == AMD_DBGAPI_STATUS_SUCCESS
+ ? string_printf (":%ld", queue_id.handle)
+ : ":?");
+
+ status = amd_dbgapi_wave_get_info (wave_id, AMD_DBGAPI_WAVE_INFO_DISPATCH,
+ sizeof (dispatch_id), &dispatch_id);
+ str += (status == AMD_DBGAPI_STATUS_SUCCESS
+ ? string_printf (":%ld", dispatch_id.handle)
+ : ":?");
+
+ str += string_printf (":%ld", wave_id.handle);
+
+ status = amd_dbgapi_wave_get_info (wave_id,
+ AMD_DBGAPI_WAVE_INFO_WORKGROUP_COORD,
+ sizeof (group_ids), &group_ids);
+ str += (status == AMD_DBGAPI_STATUS_SUCCESS
+ ? string_printf (" (%d,%d,%d)", group_ids[0], group_ids[1],
+ group_ids[2])
+ : " (?,?,?)");
+
+ status = amd_dbgapi_wave_get_info
+ (wave_id, AMD_DBGAPI_WAVE_INFO_WAVE_NUMBER_IN_WORKGROUP,
+ sizeof (wave_in_group), &wave_in_group);
+ str += (status == AMD_DBGAPI_STATUS_SUCCESS
+ ? string_printf ("/%d", wave_in_group)
+ : "/?");
+
+ return str;
+}
+
+/* Clear our async event handler. */
+
+static void
+async_event_handler_clear ()
+{
+ gdb_assert (amd_dbgapi_async_event_handler != nullptr);
+ clear_async_event_handler (amd_dbgapi_async_event_handler);
+}
+
+/* Mark our async event handler. */
+
+static void
+async_event_handler_mark ()
+{
+ gdb_assert (amd_dbgapi_async_event_handler != nullptr);
+ mark_async_event_handler (amd_dbgapi_async_event_handler);
+}
+
+/* Fetch the amd_dbgapi_inferior_info data for the given inferior. */
+
+static struct amd_dbgapi_inferior_info *
+get_amd_dbgapi_inferior_info (struct inferior *inferior)
+{
+ amd_dbgapi_inferior_info *info = amd_dbgapi_inferior_data.get (inferior);
+
+ if (info == nullptr)
+ info = amd_dbgapi_inferior_data.emplace (inferior, inferior);
+
+ return info;
+}
+
+/* Set forward progress requirement to REQUIRE for all processes of PROC_TARGET
+ matching PTID. */
+
+static void
+require_forward_progress (ptid_t ptid, process_stratum_target *proc_target,
+ bool require)
+{
+ for (inferior *inf : all_inferiors (proc_target))
+ {
+ if (ptid != minus_one_ptid && inf->pid != ptid.pid ())
+ continue;
+
+ amd_dbgapi_inferior_info *info = get_amd_dbgapi_inferior_info (inf);
+
+ if (info->process_id == AMD_DBGAPI_PROCESS_NONE)
+ continue;
+
+ /* Don't do unnecessary calls to amd-dbgapi to avoid polluting the logs. */
+ if (info->forward_progress_required == require)
+ continue;
+
+ amd_dbgapi_status_t status
+ = amd_dbgapi_process_set_progress
+ (info->process_id, (require
+ ? AMD_DBGAPI_PROGRESS_NORMAL
+ : AMD_DBGAPI_PROGRESS_NO_FORWARD));
+ gdb_assert (status == AMD_DBGAPI_STATUS_SUCCESS);
+
+ info->forward_progress_required = require;
+
+ /* If ptid targets a single inferior and we have found it, no need to
+ continue. */
+ if (ptid != minus_one_ptid)
+ break;
+ }
+}
+
+/* See amd-dbgapi-target.h. */
+
+amd_dbgapi_process_id_t
+get_amd_dbgapi_process_id (inferior *inf)
+{
+ return get_amd_dbgapi_inferior_info (inf)->process_id;
+}
+
+/* A breakpoint dbgapi wants us to insert, to handle shared library
+ loading/unloading. */
+
+struct amd_dbgapi_target_breakpoint : public code_breakpoint
+{
+ amd_dbgapi_target_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address)
+ : code_breakpoint (gdbarch, bp_breakpoint)
+ {
+ symtab_and_line sal;
+ sal.pc = address;
+ sal.section = find_pc_overlay (sal.pc);
+ sal.pspace = current_program_space;
+ add_location (sal);
+
+ pspace = current_program_space;
+ disposition = disp_donttouch;
+ }
+
+ void re_set () override;
+ void check_status (struct bpstat *bs) override;
+};
+
+void
+amd_dbgapi_target_breakpoint::re_set ()
+{
+ /* Nothing. */
+}
+
+void
+amd_dbgapi_target_breakpoint::check_status (struct bpstat *bs)
+{
+ inferior *inf = current_inferior ();
+ amd_dbgapi_inferior_info *info = get_amd_dbgapi_inferior_info (inf);
+ amd_dbgapi_status_t status;
+
+ bs->stop = 0;
+ bs->print_it = print_it_noop;
+
+ /* Find the address the breakpoint is set at. */
+ auto match_breakpoint
+ = [bs] (const decltype (info->breakpoint_map)::value_type &value)
+ { return value.second == bs->breakpoint_at; };
+ auto it
+ = std::find_if (info->breakpoint_map.begin (), info->breakpoint_map.end (),
+ match_breakpoint);
+
+ if (it == info->breakpoint_map.end ())
+ error (_("Could not find breakpoint_id for breakpoint at %s"),
+ paddress (inf->gdbarch, bs->bp_location_at->address));
+
+ amd_dbgapi_breakpoint_id_t breakpoint_id { it->first };
+ amd_dbgapi_breakpoint_action_t action;
+
+ status = amd_dbgapi_report_breakpoint_hit
+ (breakpoint_id,
+ reinterpret_cast<amd_dbgapi_client_thread_id_t> (inferior_thread ()),
+ &action);
+
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("amd_dbgapi_report_breakpoint_hit failed for breakpoint %ld "
+ "at %s (%s)"),
+ breakpoint_id.handle, paddress (inf->gdbarch, bs->bp_location_at->address),
+ get_status_string (status));
+
+ if (action == AMD_DBGAPI_BREAKPOINT_ACTION_RESUME)
+ return;
+
+ /* If the action is AMD_DBGAPI_BREAKPOINT_ACTION_HALT, we need to wait until
+ a breakpoint resume event for this breakpoint_id is seen. */
+ amd_dbgapi_event_id_t resume_event_id
+ = process_event_queue (info->process_id,
+ AMD_DBGAPI_EVENT_KIND_BREAKPOINT_RESUME);
+
+ /* We should always get a breakpoint_resume event after processing all
+ events generated by reporting the breakpoint hit. */
+ gdb_assert (resume_event_id != AMD_DBGAPI_EVENT_NONE);
+
+ amd_dbgapi_breakpoint_id_t resume_breakpoint_id;
+ status = amd_dbgapi_event_get_info (resume_event_id,
+ AMD_DBGAPI_EVENT_INFO_BREAKPOINT,
+ sizeof (resume_breakpoint_id),
+ &resume_breakpoint_id);
+
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("amd_dbgapi_event_get_info failed (%s)"), get_status_string (status));
+
+ /* The debugger API guarantees that [breakpoint_hit...resume_breakpoint]
+ sequences cannot interleave, so this breakpoint resume event must be
+ for our breakpoint_id. */
+ if (resume_breakpoint_id != breakpoint_id)
+ error (_("breakpoint resume event is not for this breakpoint. "
+ "Expected breakpoint_%ld, got breakpoint_%ld"),
+ breakpoint_id.handle, resume_breakpoint_id.handle);
+
+ amd_dbgapi_event_processed (resume_event_id);
+}
+
+bool
+amd_dbgapi_target::thread_alive (ptid_t ptid)
+{
+ if (!ptid_is_gpu (ptid))
+ return beneath ()->thread_alive (ptid);
+
+ /* Check that the wave_id is valid. */
+
+ amd_dbgapi_wave_state_t state;
+ amd_dbgapi_status_t status
+ = amd_dbgapi_wave_get_info (get_amd_dbgapi_wave_id (ptid),
+ AMD_DBGAPI_WAVE_INFO_STATE, sizeof (state),
+ &state);
+ return status == AMD_DBGAPI_STATUS_SUCCESS;
+}
+
+const char *
+amd_dbgapi_target::thread_name (thread_info *tp)
+{
+ if (!ptid_is_gpu (tp->ptid))
+ return beneath ()->thread_name (tp);
+
+ return nullptr;
+}
+
+std::string
+amd_dbgapi_target::pid_to_str (ptid_t ptid)
+{
+ if (!ptid_is_gpu (ptid))
+ return beneath ()->pid_to_str (ptid);
+
+ return wave_target_id_string (get_amd_dbgapi_wave_id (ptid));
+}
+
+const char *
+amd_dbgapi_target::extra_thread_info (thread_info *tp)
+{
+ if (!ptid_is_gpu (tp->ptid))
+ beneath ()->extra_thread_info (tp);
+
+ return nullptr;
+}
+
+target_xfer_status
+amd_dbgapi_target::xfer_partial (enum target_object object, const char *annex,
+ gdb_byte *readbuf, const gdb_byte *writebuf,
+ ULONGEST offset, ULONGEST requested_len,
+ ULONGEST *xfered_len)
+{
+ gdb::optional<scoped_restore_current_thread> maybe_restore_thread;
+
+ if (!ptid_is_gpu (inferior_ptid))
+ return beneath ()->xfer_partial (object, annex, readbuf, writebuf, offset,
+ requested_len, xfered_len);
+
+ gdb_assert (requested_len > 0);
+ gdb_assert (xfered_len != nullptr);
+
+ if (object != TARGET_OBJECT_MEMORY)
+ return TARGET_XFER_E_IO;
+
+ amd_dbgapi_process_id_t process_id
+ = get_amd_dbgapi_process_id (current_inferior ());
+ amd_dbgapi_wave_id_t wave_id = get_amd_dbgapi_wave_id (inferior_ptid);
+
+ size_t len = requested_len;
+ amd_dbgapi_status_t status;
+
+ if (readbuf != nullptr)
+ status = amd_dbgapi_read_memory (process_id, wave_id, 0,
+ AMD_DBGAPI_ADDRESS_SPACE_GLOBAL,
+ offset, &len, readbuf);
+ else
+ status = amd_dbgapi_write_memory (process_id, wave_id, 0,
+ AMD_DBGAPI_ADDRESS_SPACE_GLOBAL,
+ offset, &len, writebuf);
+
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ return TARGET_XFER_E_IO;
+
+ *xfered_len = len;
+ return TARGET_XFER_OK;
+}
+
+bool
+amd_dbgapi_target::stopped_by_watchpoint ()
+{
+ if (!ptid_is_gpu (inferior_ptid))
+ return beneath ()->stopped_by_watchpoint ();
+
+ return false;
+}
+
+void
+amd_dbgapi_target::resume (ptid_t scope_ptid, int step, enum gdb_signal signo)
+{
+ amd_dbgapi_debug_printf ("scope_ptid = %s", scope_ptid.to_string ().c_str ());
+
+ /* The amd_dbgapi_exceptions_t matching SIGNO will only be used if the
+ thread which is the target of the signal SIGNO is a GPU thread. If so,
+ make sure that there is a corresponding amd_dbgapi_exceptions_t for SIGNO
+ before we try to resume any thread. */
+ amd_dbgapi_exceptions_t exception = AMD_DBGAPI_EXCEPTION_NONE;
+ if (ptid_is_gpu (inferior_ptid))
+ {
+ switch (signo)
+ {
+ case GDB_SIGNAL_BUS:
+ exception = AMD_DBGAPI_EXCEPTION_WAVE_APERTURE_VIOLATION;
+ break;
+ case GDB_SIGNAL_SEGV:
+ exception = AMD_DBGAPI_EXCEPTION_WAVE_MEMORY_VIOLATION;
+ break;
+ case GDB_SIGNAL_ILL:
+ exception = AMD_DBGAPI_EXCEPTION_WAVE_ILLEGAL_INSTRUCTION;
+ break;
+ case GDB_SIGNAL_FPE:
+ exception = AMD_DBGAPI_EXCEPTION_WAVE_MATH_ERROR;
+ break;
+ case GDB_SIGNAL_ABRT:
+ exception = AMD_DBGAPI_EXCEPTION_WAVE_ABORT;
+ break;
+ case GDB_SIGNAL_TRAP:
+ exception = AMD_DBGAPI_EXCEPTION_WAVE_TRAP;
+ break;
+ case GDB_SIGNAL_0:
+ exception = AMD_DBGAPI_EXCEPTION_NONE;
+ break;
+ default:
+ error (_("Resuming with signal %s is not supported by this agent."),
+ gdb_signal_to_name (signo));
+ }
+ }
+
+ if (!ptid_is_gpu (inferior_ptid) || scope_ptid != inferior_ptid)
+ {
+ beneath ()->resume (scope_ptid, step, signo);
+
+ /* If the request is for a single thread, we are done. */
+ if (scope_ptid == inferior_ptid)
+ return;
+ }
+
+ process_stratum_target *proc_target = current_inferior ()->process_target ();
+
+ /* Disable forward progress requirement. */
+ require_forward_progress (scope_ptid, proc_target, false);
+
+ for (thread_info *thread : all_non_exited_threads (proc_target, scope_ptid))
+ {
+ if (!ptid_is_gpu (thread->ptid))
+ continue;
+
+ amd_dbgapi_wave_id_t wave_id = get_amd_dbgapi_wave_id (thread->ptid);
+ amd_dbgapi_status_t status;
+ if (thread->ptid == inferior_ptid)
+ status = amd_dbgapi_wave_resume (wave_id,
+ (step
+ ? AMD_DBGAPI_RESUME_MODE_SINGLE_STEP
+ : AMD_DBGAPI_RESUME_MODE_NORMAL),
+ exception);
+ else
+ status = amd_dbgapi_wave_resume (wave_id, AMD_DBGAPI_RESUME_MODE_NORMAL,
+ AMD_DBGAPI_EXCEPTION_NONE);
+
+ if (status != AMD_DBGAPI_STATUS_SUCCESS
+ /* Ignore the error that wave is no longer valid as that could
+ indicate that the process has exited. GDB treats resuming a
+ thread that no longer exists as being successful. */
+ && status != AMD_DBGAPI_STATUS_ERROR_INVALID_WAVE_ID)
+ error (_("wave_resume for wave_%ld failed (%s)"), wave_id.handle,
+ get_status_string (status));
+ }
+}
+
+void
+amd_dbgapi_target::commit_resumed ()
+{
+ amd_dbgapi_debug_printf ("called");
+
+ beneath ()->commit_resumed ();
+
+ process_stratum_target *proc_target = current_inferior ()->process_target ();
+ require_forward_progress (minus_one_ptid, proc_target, true);
+}
+
+void
+amd_dbgapi_target::stop (ptid_t ptid)
+{
+ amd_dbgapi_debug_printf ("ptid = %s", ptid.to_string ().c_str ());
+
+ bool many_threads = ptid == minus_one_ptid || ptid.is_pid ();
+
+ if (!ptid_is_gpu (ptid) || many_threads)
+ {
+ beneath ()->stop (ptid);
+
+ /* The request is for a single thread, we are done. */
+ if (!many_threads)
+ return;
+ }
+
+ auto stop_one_thread = [this] (thread_info *thread)
+ {
+ gdb_assert (thread != nullptr);
+
+ amd_dbgapi_wave_id_t wave_id = get_amd_dbgapi_wave_id (thread->ptid);
+ amd_dbgapi_wave_state_t state;
+ amd_dbgapi_status_t status
+ = amd_dbgapi_wave_get_info (wave_id, AMD_DBGAPI_WAVE_INFO_STATE,
+ sizeof (state), &state);
+ if (status == AMD_DBGAPI_STATUS_SUCCESS)
+ {
+ /* If the wave is already known to be stopped then do nothing. */
+ if (state == AMD_DBGAPI_WAVE_STATE_STOP)
+ return;
+
+ status = amd_dbgapi_wave_stop (wave_id);
+ if (status == AMD_DBGAPI_STATUS_SUCCESS)
+ return;
+
+ if (status != AMD_DBGAPI_STATUS_ERROR_INVALID_WAVE_ID)
+ error (_("wave_stop for wave_%ld failed (%s)"), wave_id.handle,
+ get_status_string (status));
+ }
+ else if (status != AMD_DBGAPI_STATUS_ERROR_INVALID_WAVE_ID)
+ error (_("wave_get_info for wave_%ld failed (%s)"), wave_id.handle,
+ get_status_string (status));
+
+ /* The status is AMD_DBGAPI_STATUS_ERROR_INVALID_WAVE_ID. The wave
+ could have terminated since the last time the wave list was
+ refreshed. */
+
+ if (m_report_thread_events)
+ {
+ get_amd_dbgapi_inferior_info (thread->inf)->wave_events.emplace_back
+ (thread->ptid, target_waitstatus ().set_thread_exited (0));
+
+ if (target_is_async_p ())
+ async_event_handler_mark ();
+ }
+
+ delete_thread_silent (thread);
+ };
+
+ process_stratum_target *proc_target = current_inferior ()->process_target ();
+
+ /* Disable forward progress requirement. */
+ require_forward_progress (ptid, proc_target, false);
+
+ if (!many_threads)
+ {
+ /* No need to iterate all non-exited threads if the request is to stop a
+ specific thread. */
+ stop_one_thread (find_thread_ptid (proc_target, ptid));
+ return;
+ }
+
+ for (auto *inf : all_inferiors (proc_target))
+ /* Use the threads_safe iterator since stop_one_thread may delete the
+ thread if it has exited. */
+ for (auto *thread : inf->threads_safe ())
+ if (thread->state != THREAD_EXITED && thread->ptid.matches (ptid)
+ && ptid_is_gpu (thread->ptid))
+ stop_one_thread (thread);
+}
+
+/* Callback for our async event handler. */
+
+static void
+handle_target_event (gdb_client_data client_data)
+{
+ inferior_event_handler (INF_REG_EVENT);
+}
+
+struct scoped_amd_dbgapi_event_processed
+{
+ scoped_amd_dbgapi_event_processed (amd_dbgapi_event_id_t event_id)
+ : m_event_id (event_id)
+ {
+ gdb_assert (event_id != AMD_DBGAPI_EVENT_NONE);
+ }
+
+ ~scoped_amd_dbgapi_event_processed ()
+ {
+ amd_dbgapi_status_t status = amd_dbgapi_event_processed (m_event_id);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ warning (_("Failed to acknowledge amd-dbgapi event %" PRIu64),
+ m_event_id.handle);
+ }
+
+ DISABLE_COPY_AND_ASSIGN (scoped_amd_dbgapi_event_processed);
+
+private:
+ amd_dbgapi_event_id_t m_event_id;
+};
+
+/* Called when a dbgapi notifier fd is readable. CLIENT_DATA is the
+ amd_dbgapi_inferior_info object corresponding to the notifier. */
+
+static void
+dbgapi_notifier_handler (int err, gdb_client_data client_data)
+{
+ amd_dbgapi_inferior_info *info = (amd_dbgapi_inferior_info *) client_data;
+ int ret;
+
+ /* Drain the notifier pipe. */
+ do
+ {
+ char buf;
+ ret = read (info->notifier, &buf, 1);
+ }
+ while (ret >= 0 || (ret == -1 && errno == EINTR));
+
+ if (info->inf->target_is_pushed (&the_amd_dbgapi_target))
+ {
+ /* The amd-dbgapi target is pushed: signal our async handler, the event
+ will be consumed through our wait method. */
+
+ async_event_handler_mark ();
+ }
+ else
+ {
+ /* The amd-dbgapi target is not pushed: if there's an event, the only
+ expected one is one of the RUNTIME kind. If the event tells us the
+ inferior as activated the ROCm runtime, push the amd-dbgapi
+ target. */
+
+ amd_dbgapi_event_id_t event_id;
+ amd_dbgapi_event_kind_t event_kind;
+ amd_dbgapi_status_t status
+ = amd_dbgapi_process_next_pending_event (info->process_id, &event_id,
+ &event_kind);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("next_pending_event failed (%s)"), get_status_string (status));
+
+ if (event_id == AMD_DBGAPI_EVENT_NONE)
+ return;
+
+ gdb_assert (event_kind == AMD_DBGAPI_EVENT_KIND_RUNTIME);
+
+ scoped_amd_dbgapi_event_processed mark_event_processed (event_id);
+
+ amd_dbgapi_runtime_state_t runtime_state;
+ status = amd_dbgapi_event_get_info (event_id,
+ AMD_DBGAPI_EVENT_INFO_RUNTIME_STATE,
+ sizeof (runtime_state),
+ &runtime_state);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("event_get_info for event_%ld failed (%s)"),
+ event_id.handle, get_status_string (status));
+
+ switch (runtime_state)
+ {
+ case AMD_DBGAPI_RUNTIME_STATE_LOADED_SUCCESS:
+ gdb_assert (info->runtime_state == AMD_DBGAPI_RUNTIME_STATE_UNLOADED);
+ info->runtime_state = runtime_state;
+ amd_dbgapi_debug_printf ("pushing amd-dbgapi target");
+ info->inf->push_target (&the_amd_dbgapi_target);
+
+ /* The underlying target will already be async if we are running, but not if
+ we are attaching. */
+ if (info->inf->process_target ()->is_async_p ())
+ {
+ scoped_restore_current_thread restore_thread;
+ switch_to_inferior_no_thread (info->inf);
+
+ /* Make sure our async event handler is created. */
+ target_async (true);
+ }
+ break;
+
+ case AMD_DBGAPI_RUNTIME_STATE_UNLOADED:
+ gdb_assert (info->runtime_state
+ == AMD_DBGAPI_RUNTIME_STATE_LOADED_ERROR_RESTRICTION);
+ info->runtime_state = runtime_state;
+ break;
+
+ case AMD_DBGAPI_RUNTIME_STATE_LOADED_ERROR_RESTRICTION:
+ gdb_assert (info->runtime_state == AMD_DBGAPI_RUNTIME_STATE_UNLOADED);
+ info->runtime_state = runtime_state;
+ warning (_("amd-dbgapi: unable to enable GPU debugging "
+ "due to a restriction error"));
+ break;
+ }
+ }
+}
+
+void
+amd_dbgapi_target::async (bool enable)
+{
+ beneath ()->async (enable);
+
+ if (enable)
+ {
+ if (amd_dbgapi_async_event_handler != nullptr)
+ {
+ /* Already enabled. */
+ return;
+ }
+
+ /* The library gives us one notifier file descriptor per inferior (even
+ the ones that have not yet loaded their runtime). Register them
+ all with the event loop. */
+ process_stratum_target *proc_target
+ = current_inferior ()->process_target ();
+
+ for (inferior *inf : all_non_exited_inferiors (proc_target))
+ {
+ amd_dbgapi_inferior_info *info = get_amd_dbgapi_inferior_info (inf);
+
+ if (info->notifier != -1)
+ add_file_handler (info->notifier, dbgapi_notifier_handler, info,
+ string_printf ("amd-dbgapi notifier for pid %d",
+ inf->pid));
+ }
+
+ amd_dbgapi_async_event_handler
+ = create_async_event_handler (handle_target_event, nullptr,
+ "amd-dbgapi");
+
+ /* There may be pending events to handle. Tell the event loop to poll
+ them. */
+ async_event_handler_mark ();
+ }
+ else
+ {
+ if (amd_dbgapi_async_event_handler == nullptr)
+ return;
+
+ for (inferior *inf : all_inferiors ())
+ {
+ amd_dbgapi_inferior_info *info = get_amd_dbgapi_inferior_info (inf);
+
+ if (info->notifier != -1)
+ delete_file_handler (info->notifier);
+ }
+
+ delete_async_event_handler (&amd_dbgapi_async_event_handler);
+ }
+}
+
+/* Make a ptid for a GPU wave. See comment on ptid_is_gpu for more details. */
+
+static ptid_t
+make_gpu_ptid (ptid_t::pid_type pid, amd_dbgapi_wave_id_t wave_id)
+{
+ return ptid_t (pid, 1, wave_id.handle);
+}
+
+/* Process an event that was just pulled out of the amd-dbgapi library. */
+
+static void
+process_one_event (amd_dbgapi_event_id_t event_id,
+ amd_dbgapi_event_kind_t event_kind)
+{
+ /* Automatically mark this event processed when going out of scope. */
+ scoped_amd_dbgapi_event_processed mark_event_processed (event_id);
+
+ amd_dbgapi_process_id_t process_id;
+ amd_dbgapi_status_t status
+ = amd_dbgapi_event_get_info (event_id, AMD_DBGAPI_EVENT_INFO_PROCESS,
+ sizeof (process_id), &process_id);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("event_get_info for event_%ld failed (%s)"), event_id.handle,
+ get_status_string (status));
+
+ amd_dbgapi_os_process_id_t pid;
+ status = amd_dbgapi_process_get_info (process_id,
+ AMD_DBGAPI_PROCESS_INFO_OS_ID,
+ sizeof (pid), &pid);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("process_get_info for process_%ld failed (%s)"),
+ process_id.handle, get_status_string (status));
+
+ auto *proc_target = current_inferior ()->process_target ();
+ inferior *inf = find_inferior_pid (proc_target, pid);
+ gdb_assert (inf != nullptr);
+ amd_dbgapi_inferior_info *info = get_amd_dbgapi_inferior_info (inf);
+
+ switch (event_kind)
+ {
+ case AMD_DBGAPI_EVENT_KIND_WAVE_COMMAND_TERMINATED:
+ case AMD_DBGAPI_EVENT_KIND_WAVE_STOP:
+ {
+ amd_dbgapi_wave_id_t wave_id;
+ status
+ = amd_dbgapi_event_get_info (event_id, AMD_DBGAPI_EVENT_INFO_WAVE,
+ sizeof (wave_id), &wave_id);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("event_get_info for event_%ld failed (%s)"),
+ event_id.handle, get_status_string (status));
+
+ ptid_t event_ptid = make_gpu_ptid (pid, wave_id);
+ target_waitstatus ws;
+
+ amd_dbgapi_wave_stop_reasons_t stop_reason;
+ status = amd_dbgapi_wave_get_info (wave_id,
+ AMD_DBGAPI_WAVE_INFO_STOP_REASON,
+ sizeof (stop_reason), &stop_reason);
+ if (status == AMD_DBGAPI_STATUS_ERROR_INVALID_WAVE_ID
+ && event_kind == AMD_DBGAPI_EVENT_KIND_WAVE_COMMAND_TERMINATED)
+ ws.set_thread_exited (0);
+ else if (status == AMD_DBGAPI_STATUS_SUCCESS)
+ {
+ if (stop_reason & AMD_DBGAPI_WAVE_STOP_REASON_APERTURE_VIOLATION)
+ ws.set_stopped (GDB_SIGNAL_BUS);
+ else if (stop_reason
+ & AMD_DBGAPI_WAVE_STOP_REASON_MEMORY_VIOLATION)
+ ws.set_stopped (GDB_SIGNAL_SEGV);
+ else if (stop_reason
+ & AMD_DBGAPI_WAVE_STOP_REASON_ILLEGAL_INSTRUCTION)
+ ws.set_stopped (GDB_SIGNAL_ILL);
+ else if (stop_reason
+ & (AMD_DBGAPI_WAVE_STOP_REASON_FP_INPUT_DENORMAL
+ | AMD_DBGAPI_WAVE_STOP_REASON_FP_DIVIDE_BY_0
+ | AMD_DBGAPI_WAVE_STOP_REASON_FP_OVERFLOW
+ | AMD_DBGAPI_WAVE_STOP_REASON_FP_UNDERFLOW
+ | AMD_DBGAPI_WAVE_STOP_REASON_FP_INEXACT
+ | AMD_DBGAPI_WAVE_STOP_REASON_FP_INVALID_OPERATION
+ | AMD_DBGAPI_WAVE_STOP_REASON_INT_DIVIDE_BY_0))
+ ws.set_stopped (GDB_SIGNAL_FPE);
+ else if (stop_reason
+ & (AMD_DBGAPI_WAVE_STOP_REASON_BREAKPOINT
+ | AMD_DBGAPI_WAVE_STOP_REASON_WATCHPOINT
+ | AMD_DBGAPI_WAVE_STOP_REASON_SINGLE_STEP
+ | AMD_DBGAPI_WAVE_STOP_REASON_DEBUG_TRAP
+ | AMD_DBGAPI_WAVE_STOP_REASON_TRAP))
+ ws.set_stopped (GDB_SIGNAL_TRAP);
+ else if (stop_reason & AMD_DBGAPI_WAVE_STOP_REASON_ASSERT_TRAP)
+ ws.set_stopped (GDB_SIGNAL_ABRT);
+ else
+ ws.set_stopped (GDB_SIGNAL_0);
+
+ thread_info *thread = find_thread_ptid (proc_target, event_ptid);
+ if (thread == nullptr)
+ {
+ /* Silently create new GPU threads to avoid spamming the
+ terminal with thousands of "[New Thread ...]" messages. */
+ thread = add_thread_silent (proc_target, event_ptid);
+ set_running (proc_target, event_ptid, true);
+ set_executing (proc_target, event_ptid, true);
+ }
+
+ /* If the wave is stopped because of a software breakpoint, the
+ program counter needs to be adjusted so that it points to the
+ breakpoint instruction. */
+ if ((stop_reason & AMD_DBGAPI_WAVE_STOP_REASON_BREAKPOINT) != 0)
+ {
+ regcache *regcache = get_thread_regcache (thread);
+ gdbarch *gdbarch = regcache->arch ();
+
+ CORE_ADDR pc = regcache_read_pc (regcache);
+ CORE_ADDR adjusted_pc
+ = pc - gdbarch_decr_pc_after_break (gdbarch);
+
+ if (adjusted_pc != pc)
+ regcache_write_pc (regcache, adjusted_pc);
+ }
+ }
+ else
+ error (_("wave_get_info for wave_%ld failed (%s)"),
+ wave_id.handle, get_status_string (status));
+
+ info->wave_events.emplace_back (event_ptid, ws);
+ break;
+ }
+
+ case AMD_DBGAPI_EVENT_KIND_CODE_OBJECT_LIST_UPDATED:
+ /* We get here when the following sequence of events happens:
+
+ - the inferior hits the amd-dbgapi "r_brk" internal breakpoint
+ - amd_dbgapi_target_breakpoint::check_status calls
+ amd_dbgapi_report_breakpoint_hit, which queues an event of this
+ kind in dbgapi
+ - amd_dbgapi_target_breakpoint::check_status calls
+ process_event_queue, which pulls the event out of dbgapi, and
+ gets us here
+
+ When amd_dbgapi_target_breakpoint::check_status is called, the current
+ inferior is the inferior that hit the breakpoint, which should still be
+ the case now. */
+ gdb_assert (inf == current_inferior ());
+ handle_solib_event ();
+ break;
+
+ case AMD_DBGAPI_EVENT_KIND_BREAKPOINT_RESUME:
+ /* Breakpoint resume events should be handled by the breakpoint
+ action, and this code should not reach this. */
+ gdb_assert_not_reached ("unhandled event kind");
+ break;
+
+ case AMD_DBGAPI_EVENT_KIND_RUNTIME:
+ {
+ amd_dbgapi_runtime_state_t runtime_state;
+
+ status = amd_dbgapi_event_get_info (event_id,
+ AMD_DBGAPI_EVENT_INFO_RUNTIME_STATE,
+ sizeof (runtime_state),
+ &runtime_state);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("event_get_info for event_%ld failed (%s)"),
+ event_id.handle, get_status_string (status));
+
+ gdb_assert (runtime_state == AMD_DBGAPI_RUNTIME_STATE_UNLOADED);
+ gdb_assert
+ (info->runtime_state == AMD_DBGAPI_RUNTIME_STATE_LOADED_SUCCESS);
+
+ info->runtime_state = runtime_state;
+
+ gdb_assert (inf->target_is_pushed (&the_amd_dbgapi_target));
+ inf->unpush_target (&the_amd_dbgapi_target);
+ }
+ break;
+
+ default:
+ error (_("event kind (%d) not supported"), event_kind);
+ }
+}
+
+/* Return a textual version of KIND. */
+
+static const char *
+event_kind_str (amd_dbgapi_event_kind_t kind)
+{
+ switch (kind)
+ {
+ case AMD_DBGAPI_EVENT_KIND_NONE:
+ return "NONE";
+
+ case AMD_DBGAPI_EVENT_KIND_WAVE_STOP:
+ return "WAVE_STOP";
+
+ case AMD_DBGAPI_EVENT_KIND_WAVE_COMMAND_TERMINATED:
+ return "WAVE_COMMAND_TERMINATED";
+
+ case AMD_DBGAPI_EVENT_KIND_CODE_OBJECT_LIST_UPDATED:
+ return "CODE_OBJECT_LIST_UPDATED";
+
+ case AMD_DBGAPI_EVENT_KIND_BREAKPOINT_RESUME:
+ return "BREAKPOINT_RESUME";
+
+ case AMD_DBGAPI_EVENT_KIND_RUNTIME:
+ return "RUNTIME";
+
+ case AMD_DBGAPI_EVENT_KIND_QUEUE_ERROR:
+ return "QUEUE_ERROR";
+ }
+
+ gdb_assert_not_reached ("unhandled amd_dbgapi_event_kind_t value");
+}
+
+/* Drain the dbgapi event queue of a given process_id, or of all processes if
+ process_id is AMD_DBGAPI_PROCESS_NONE. Stop processing the events if an
+ event of a given kind is requested and `process_id` is not
+ AMD_DBGAPI_PROCESS_NONE. Wave stop events that are not returned are queued
+ into their inferior's amd_dbgapi_inferior_info pending wave events. */
+
+static amd_dbgapi_event_id_t
+process_event_queue (amd_dbgapi_process_id_t process_id,
+ amd_dbgapi_event_kind_t until_event_kind)
+{
+ /* An event of a given type can only be requested from a single
+ process_id. */
+ gdb_assert (until_event_kind == AMD_DBGAPI_EVENT_KIND_NONE
+ || process_id != AMD_DBGAPI_PROCESS_NONE);
+
+ while (true)
+ {
+ amd_dbgapi_event_id_t event_id;
+ amd_dbgapi_event_kind_t event_kind;
+
+ amd_dbgapi_status_t status
+ = amd_dbgapi_process_next_pending_event (process_id, &event_id,
+ &event_kind);
+
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("next_pending_event failed (%s)"), get_status_string (status));
+
+ if (event_kind != AMD_DBGAPI_EVENT_KIND_NONE)
+ amd_dbgapi_debug_printf ("Pulled event from dbgapi: "
+ "event_id.handle = %" PRIu64 ", "
+ "event_kind = %s",
+ event_id.handle,
+ event_kind_str (event_kind));
+
+ if (event_id == AMD_DBGAPI_EVENT_NONE || event_kind == until_event_kind)
+ return event_id;
+
+ process_one_event (event_id, event_kind);
+ }
+}
+
+bool
+amd_dbgapi_target::has_pending_events ()
+{
+ if (amd_dbgapi_async_event_handler != nullptr
+ && async_event_handler_marked (amd_dbgapi_async_event_handler))
+ return true;
+
+ return beneath ()->has_pending_events ();
+}
+
+/* Pop one pending event from the per-inferior structures.
+
+ If PID is not -1, restrict the search to the inferior with that pid. */
+
+static std::pair<ptid_t, target_waitstatus>
+consume_one_event (int pid)
+{
+ auto *target = current_inferior ()->process_target ();
+ struct amd_dbgapi_inferior_info *info = nullptr;
+
+ if (pid == -1)
+ {
+ for (inferior *inf : all_inferiors (target))
+ {
+ info = get_amd_dbgapi_inferior_info (inf);
+ if (!info->wave_events.empty ())
+ break;
+ }
+
+ gdb_assert (info != nullptr);
+ }
+ else
+ {
+ inferior *inf = find_inferior_pid (target, pid);
+
+ gdb_assert (inf != nullptr);
+ info = get_amd_dbgapi_inferior_info (inf);
+ }
+
+ if (info->wave_events.empty ())
+ return { minus_one_ptid, {} };
+
+ auto event = info->wave_events.front ();
+ info->wave_events.pop_front ();
+
+ return event;
+}
+
+ptid_t
+amd_dbgapi_target::wait (ptid_t ptid, struct target_waitstatus *ws,
+ target_wait_flags target_options)
+{
+ gdb_assert (!current_inferior ()->process_target ()->commit_resumed_state);
+ gdb_assert (ptid == minus_one_ptid || ptid.is_pid ());
+
+ amd_dbgapi_debug_printf ("ptid = %s", ptid.to_string ().c_str ());
+
+ ptid_t event_ptid = beneath ()->wait (ptid, ws, target_options);
+ if (event_ptid != minus_one_ptid)
+ {
+ if (ws->kind () == TARGET_WAITKIND_EXITED
+ || ws->kind () == TARGET_WAITKIND_SIGNALLED)
+ {
+ /* This inferior has exited so drain its dbgapi event queue. */
+ while (consume_one_event (event_ptid.pid ()).first
+ != minus_one_ptid)
+ ;
+ }
+ return event_ptid;
+ }
+
+ gdb_assert (ws->kind () == TARGET_WAITKIND_NO_RESUMED
+ || ws->kind () == TARGET_WAITKIND_IGNORE);
+
+ /* Flush the async handler first. */
+ if (target_is_async_p ())
+ async_event_handler_clear ();
+
+ /* There may be more events to process (either already in `wave_events` or
+ that we need to fetch from dbgapi. Mark the async event handler so that
+ amd_dbgapi_target::wait gets called again and again, until it eventually
+ returns minus_one_ptid. */
+ auto more_events = make_scope_exit ([] ()
+ {
+ if (target_is_async_p ())
+ async_event_handler_mark ();
+ });
+
+ auto *proc_target = current_inferior ()->process_target ();
+
+ /* Disable forward progress for the specified pid in ptid if it isn't
+ minus_on_ptid, or all attached processes if ptid is minus_one_ptid. */
+ require_forward_progress (ptid, proc_target, false);
+
+ target_waitstatus gpu_waitstatus;
+ std::tie (event_ptid, gpu_waitstatus) = consume_one_event (ptid.pid ());
+ if (event_ptid == minus_one_ptid)
+ {
+ /* Drain the events from the amd_dbgapi and preserve the ordering. */
+ process_event_queue ();
+
+ std::tie (event_ptid, gpu_waitstatus) = consume_one_event (ptid.pid ());
+ if (event_ptid == minus_one_ptid)
+ {
+ /* If we requested a specific ptid, and nothing came out, assume
+ another ptid may have more events, otherwise, keep the
+ async_event_handler flushed. */
+ if (ptid == minus_one_ptid)
+ more_events.release ();
+
+ if (ws->kind () == TARGET_WAITKIND_NO_RESUMED)
+ {
+ /* We can't easily check that all GPU waves are stopped, and no
+ new waves can be created (the GPU has fixed function hardware
+ to create new threads), so even if the target beneath returns
+ waitkind_no_resumed, we have to report waitkind_ignore if GPU
+ debugging is enabled for at least one resumed inferior handled
+ by the amd-dbgapi target. */
+
+ for (inferior *inf : all_inferiors ())
+ if (inf->target_at (arch_stratum) == &the_amd_dbgapi_target
+ && get_amd_dbgapi_inferior_info (inf)->runtime_state
+ == AMD_DBGAPI_RUNTIME_STATE_LOADED_SUCCESS)
+ {
+ ws->set_ignore ();
+ break;
+ }
+ }
+
+ /* There are no events to report, return the target beneath's
+ waitstatus (either IGNORE or NO_RESUMED). */
+ return minus_one_ptid;
+ }
+ }
+
+ *ws = gpu_waitstatus;
+ return event_ptid;
+}
+
+bool
+amd_dbgapi_target::stopped_by_sw_breakpoint ()
+{
+ if (!ptid_is_gpu (inferior_ptid))
+ return beneath ()->stopped_by_sw_breakpoint ();
+
+ amd_dbgapi_wave_id_t wave_id = get_amd_dbgapi_wave_id (inferior_ptid);
+
+ amd_dbgapi_wave_stop_reasons_t stop_reason;
+ amd_dbgapi_status_t status
+ = amd_dbgapi_wave_get_info (wave_id, AMD_DBGAPI_WAVE_INFO_STOP_REASON,
+ sizeof (stop_reason), &stop_reason);
+
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ return false;
+
+ return (stop_reason & AMD_DBGAPI_WAVE_STOP_REASON_BREAKPOINT) != 0;
+}
+
+bool
+amd_dbgapi_target::stopped_by_hw_breakpoint ()
+{
+ if (!ptid_is_gpu (inferior_ptid))
+ return beneath ()->stopped_by_hw_breakpoint ();
+
+ return false;
+}
+
+/* Make the amd-dbgapi library attach to the process behind INF.
+
+ Note that this is unrelated to the "attach" GDB concept / command.
+
+ By attaching to the process, we get a notifier fd that tells us when it
+ activates the ROCm runtime and when there are subsequent debug events. */
+
+static void
+attach_amd_dbgapi (inferior *inf)
+{
+ AMD_DBGAPI_SCOPED_DEBUG_START_END ("inf num = %d", inf->num);
+
+ if (!target_can_async_p ())
+ {
+ warning (_("The amd-dbgapi target requires the target beneath to be "
+ "asynchronous, GPU debugging is disabled"));
+ return;
+ }
+
+ auto *info = get_amd_dbgapi_inferior_info (inf);
+
+ /* Are we already attached? */
+ if (info->process_id != AMD_DBGAPI_PROCESS_NONE)
+ {
+ amd_dbgapi_debug_printf
+ ("already attached: process_id = %" PRIu64, info->process_id.handle);
+ return;
+ }
+
+ amd_dbgapi_status_t status
+ = amd_dbgapi_process_attach
+ (reinterpret_cast<amd_dbgapi_client_process_id_t> (inf),
+ &info->process_id);
+ if (status == AMD_DBGAPI_STATUS_ERROR_RESTRICTION)
+ {
+ warning (_("amd-dbgapi: unable to enable GPU debugging due to a "
+ "restriction error"));
+ return;
+ }
+ else if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ {
+ warning (_("amd-dbgapi: could not attach to process %d (%s), GPU "
+ "debugging will not be available."), inf->pid,
+ get_status_string (status));
+ return;
+ }
+
+ if (amd_dbgapi_process_get_info (info->process_id,
+ AMD_DBGAPI_PROCESS_INFO_NOTIFIER,
+ sizeof (info->notifier), &info->notifier)
+ != AMD_DBGAPI_STATUS_SUCCESS)
+ {
+ amd_dbgapi_process_detach (info->process_id);
+ info->process_id = AMD_DBGAPI_PROCESS_NONE;
+ warning (_("amd-dbgapi: could not retrieve process %d's notifier, GPU "
+ "debugging will not be available."), inf->pid);
+ return;
+ }
+
+ amd_dbgapi_debug_printf ("process_id = %" PRIu64 ", notifier fd = %d",
+ info->process_id.handle, info->notifier);
+
+ /* If GDB is attaching to a process that has the runtime loaded, there will
+ already be a "runtime loaded" event available. Consume it and push the
+ target. */
+ dbgapi_notifier_handler (0, info);
+
+ add_file_handler (info->notifier, dbgapi_notifier_handler, info,
+ "amd-dbgapi notifier");
+}
+
+static void maybe_reset_amd_dbgapi ();
+
+/* Make the amd-dbgapi library detach from INF.
+
+ Note that this us unrelated to the "detach" GDB concept / command.
+
+ This undoes what attach_amd_dbgapi does. */
+
+static void
+detach_amd_dbgapi (inferior *inf)
+{
+ AMD_DBGAPI_SCOPED_DEBUG_START_END ("inf num = %d", inf->num);
+
+ auto *info = get_amd_dbgapi_inferior_info (inf);
+
+ if (info->process_id == AMD_DBGAPI_PROCESS_NONE)
+ return;
+
+ info->runtime_state = AMD_DBGAPI_RUNTIME_STATE_UNLOADED;
+
+ amd_dbgapi_status_t status = amd_dbgapi_process_detach (info->process_id);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ warning (_("amd-dbgapi: could not detach from process %d (%s)"),
+ inf->pid, get_status_string (status));
+
+ gdb_assert (info->notifier != -1);
+ delete_file_handler (info->notifier);
+
+ /* This is a noop if the target is not pushed. */
+ inf->unpush_target (&the_amd_dbgapi_target);
+
+ /* Delete the breakpoints that are still active. */
+ for (auto &&value : info->breakpoint_map)
+ delete_breakpoint (value.second);
+
+ /* Reset the amd_dbgapi_inferior_info. */
+ *info = amd_dbgapi_inferior_info (inf);
+
+ maybe_reset_amd_dbgapi ();
+}
+
+void
+amd_dbgapi_target::mourn_inferior ()
+{
+ detach_amd_dbgapi (current_inferior ());
+ beneath ()->mourn_inferior ();
+}
+
+void
+amd_dbgapi_target::detach (inferior *inf, int from_tty)
+{
+ /* We're about to resume the waves by detaching the dbgapi library from the
+ inferior, so we need to remove all breakpoints that are still inserted.
+
+ Breakpoints may still be inserted because the inferior may be running in
+ non-stop mode, or because GDB changed the default setting to leave all
+ breakpoints inserted in all-stop mode when all threads are stopped. */
+ remove_breakpoints_inf (current_inferior ());
+
+ detach_amd_dbgapi (inf);
+ beneath ()->detach (inf, from_tty);
+}
+
+void
+amd_dbgapi_target::fetch_registers (struct regcache *regcache, int regno)
+{
+ if (!ptid_is_gpu (regcache->ptid ()))
+ {
+ beneath ()->fetch_registers (regcache, regno);
+ return;
+ }
+
+ struct gdbarch *gdbarch = regcache->arch ();
+ gdb_assert (is_amdgpu_arch (gdbarch));
+
+ amdgpu_gdbarch_tdep *tdep = get_amdgpu_gdbarch_tdep (gdbarch);
+ amd_dbgapi_wave_id_t wave_id = get_amd_dbgapi_wave_id (regcache->ptid ());
+ gdb_byte raw[AMDGPU_MAX_REGISTER_SIZE];
+ amd_dbgapi_status_t status
+ = amd_dbgapi_read_register (wave_id, tdep->register_ids[regno], 0,
+ register_type (gdbarch, regno)->length (),
+ raw);
+
+ if (status == AMD_DBGAPI_STATUS_SUCCESS)
+ regcache->raw_supply (regno, raw);
+ else if (status != AMD_DBGAPI_STATUS_ERROR_REGISTER_NOT_AVAILABLE)
+ warning (_("Couldn't read register %s (#%d) (%s)."),
+ gdbarch_register_name (gdbarch, regno), regno,
+ get_status_string (status));
+}
+
+void
+amd_dbgapi_target::store_registers (struct regcache *regcache, int regno)
+{
+ if (!ptid_is_gpu (regcache->ptid ()))
+ {
+ beneath ()->store_registers (regcache, regno);
+ return;
+ }
+
+ struct gdbarch *gdbarch = regcache->arch ();
+ gdb_assert (is_amdgpu_arch (gdbarch));
+
+ gdb_byte raw[AMDGPU_MAX_REGISTER_SIZE];
+ regcache->raw_collect (regno, &raw);
+
+ amdgpu_gdbarch_tdep *tdep = get_amdgpu_gdbarch_tdep (gdbarch);
+
+ /* If the register has read-only bits, invalidate the value in the regcache
+ as the value actualy written may differ. */
+ if (tdep->register_properties[regno]
+ & AMD_DBGAPI_REGISTER_PROPERTY_READONLY_BITS)
+ regcache->invalidate (regno);
+
+ /* Invalidate all volatile registers if this register has the invalidate
+ volatile property. For example, writting to VCC may change the content
+ of STATUS.VCCZ. */
+ if (tdep->register_properties[regno]
+ & AMD_DBGAPI_REGISTER_PROPERTY_INVALIDATE_VOLATILE)
+ {
+ for (size_t r = 0; r < tdep->register_properties.size (); ++r)
+ if (tdep->register_properties[r] & AMD_DBGAPI_REGISTER_PROPERTY_VOLATILE)
+ regcache->invalidate (r);
+ }
+
+ amd_dbgapi_wave_id_t wave_id = get_amd_dbgapi_wave_id (regcache->ptid ());
+ amd_dbgapi_status_t status
+ = amd_dbgapi_write_register (wave_id, tdep->register_ids[regno], 0,
+ register_type (gdbarch, regno)->length (),
+ raw);
+
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ warning (_("Couldn't write register %s (#%d)."),
+ gdbarch_register_name (gdbarch, regno), regno);
+}
+
+struct gdbarch *
+amd_dbgapi_target::thread_architecture (ptid_t ptid)
+{
+ if (!ptid_is_gpu (ptid))
+ return beneath ()->thread_architecture (ptid);
+
+ /* We can cache the gdbarch for a given wave_id (ptid::tid) because
+ wave IDs are unique, and aren't reused. */
+ if (ptid.tid () == m_cached_arch_tid)
+ return m_cached_arch;
+
+ amd_dbgapi_wave_id_t wave_id = get_amd_dbgapi_wave_id (ptid);
+ amd_dbgapi_architecture_id_t architecture_id;
+ amd_dbgapi_status_t status;
+
+ status = amd_dbgapi_wave_get_info (wave_id, AMD_DBGAPI_WAVE_INFO_ARCHITECTURE,
+ sizeof (architecture_id),
+ &architecture_id);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("Couldn't get architecture for wave_%ld"), ptid.tid ());
+
+ uint32_t elf_amdgpu_machine;
+ status = amd_dbgapi_architecture_get_info
+ (architecture_id, AMD_DBGAPI_ARCHITECTURE_INFO_ELF_AMDGPU_MACHINE,
+ sizeof (elf_amdgpu_machine), &elf_amdgpu_machine);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("Couldn't get elf_amdgpu_machine for architecture_%ld"),
+ architecture_id.handle);
+
+ struct gdbarch_info info;
+ info.bfd_arch_info = bfd_lookup_arch (bfd_arch_amdgcn, elf_amdgpu_machine);
+ info.byte_order = BFD_ENDIAN_LITTLE;
+
+ m_cached_arch_tid = ptid.tid ();
+ m_cached_arch = gdbarch_find_by_info (info);
+ if (m_cached_arch == nullptr)
+ error (_("Couldn't get elf_amdgpu_machine (%#x)"), elf_amdgpu_machine);
+
+ return m_cached_arch;
+}
+
+void
+amd_dbgapi_target::thread_events (int enable)
+{
+ m_report_thread_events = enable;
+ beneath ()->thread_events (enable);
+}
+
+void
+amd_dbgapi_target::update_thread_list ()
+{
+ for (inferior *inf : all_inferiors ())
+ {
+ amd_dbgapi_process_id_t process_id
+ = get_amd_dbgapi_process_id (inf);
+ if (process_id == AMD_DBGAPI_PROCESS_NONE)
+ {
+ /* The inferior may not be attached yet. */
+ continue;
+ }
+
+ size_t count;
+ amd_dbgapi_wave_id_t *wave_list;
+ amd_dbgapi_changed_t changed;
+ amd_dbgapi_status_t status
+ = amd_dbgapi_process_wave_list (process_id, &count, &wave_list,
+ &changed);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("amd_dbgapi_wave_list failed (%s)"),
+ get_status_string (status));
+
+ if (changed == AMD_DBGAPI_CHANGED_NO)
+ continue;
+
+ /* Create a set and free the wave list. */
+ std::set<ptid_t::tid_type> threads;
+ for (size_t i = 0; i < count; ++i)
+ threads.emplace (wave_list[i].handle);
+
+ xfree (wave_list);
+
+ /* Prune the wave_ids that already have a thread_info. Any thread_info
+ which does not have a corresponding wave_id represents a wave which
+ is gone at this point and should be deleted. */
+ for (thread_info *tp : inf->threads_safe ())
+ if (ptid_is_gpu (tp->ptid) && tp->state != THREAD_EXITED)
+ {
+ auto it = threads.find (tp->ptid.tid ());
+
+ if (it == threads.end ())
+ delete_thread (tp);
+ else
+ threads.erase (it);
+ }
+
+ /* The wave_ids that are left require a new thread_info. */
+ for (ptid_t::tid_type tid : threads)
+ {
+ ptid_t wave_ptid
+ = make_gpu_ptid (inf->pid, amd_dbgapi_wave_id_t {tid});
+
+ add_thread_silent (inf->process_target (), wave_ptid);
+ set_running (inf->process_target (), wave_ptid, true);
+ set_executing (inf->process_target (), wave_ptid, true);
+ }
+ }
+
+ /* Give the beneath target a chance to do extra processing. */
+ this->beneath ()->update_thread_list ();
+}
+
+/* inferior_created observer. */
+
+static void
+amd_dbgapi_target_inferior_created (inferior *inf)
+{
+ /* If the inferior is not running on the native target (e.g. it is running
+ on a remote target), we don't want to deal with it. */
+ if (inf->process_target () != get_native_target ())
+ return;
+
+ attach_amd_dbgapi (inf);
+}
+
+/* inferior_exit observer.
+
+ This covers normal exits, but also detached inferiors (including detached
+ fork parents). */
+
+static void
+amd_dbgapi_inferior_exited (inferior *inf)
+{
+ detach_amd_dbgapi (inf);
+}
+
+/* inferior_pre_detach observer. */
+
+static void
+amd_dbgapi_inferior_pre_detach (inferior *inf)
+{
+ /* We need to amd-dbgapi-detach before we ptrace-detach. If the amd-dbgapi
+ target isn't pushed, do that now. If the amd-dbgapi target is pushed,
+ we'll do it in amd_dbgapi_target::detach. */
+ if (!inf->target_is_pushed (&the_amd_dbgapi_target))
+ detach_amd_dbgapi (inf);
+}
+
+/* get_os_pid callback. */
+
+static amd_dbgapi_status_t
+amd_dbgapi_get_os_pid_callback
+ (amd_dbgapi_client_process_id_t client_process_id, pid_t *pid)
+{
+ inferior *inf = reinterpret_cast<inferior *> (client_process_id);
+
+ if (inf->pid == 0)
+ return AMD_DBGAPI_STATUS_ERROR_PROCESS_EXITED;
+
+ *pid = inf->pid;
+ return AMD_DBGAPI_STATUS_SUCCESS;
+}
+
+/* insert_breakpoint callback. */
+
+static amd_dbgapi_status_t
+amd_dbgapi_insert_breakpoint_callback
+ (amd_dbgapi_client_process_id_t client_process_id,
+ amd_dbgapi_global_address_t address,
+ amd_dbgapi_breakpoint_id_t breakpoint_id)
+{
+ inferior *inf = reinterpret_cast<inferior *> (client_process_id);
+ struct amd_dbgapi_inferior_info *info = get_amd_dbgapi_inferior_info (inf);
+
+ auto it = info->breakpoint_map.find (breakpoint_id.handle);
+ if (it != info->breakpoint_map.end ())
+ return AMD_DBGAPI_STATUS_ERROR_INVALID_BREAKPOINT_ID;
+
+ /* We need to find the address in the given inferior's program space. */
+ scoped_restore_current_thread restore_thread;
+ switch_to_inferior_no_thread (inf);
+
+ /* Create a new breakpoint. */
+ struct obj_section *section = find_pc_section (address);
+ if (section == nullptr || section->objfile == nullptr)
+ return AMD_DBGAPI_STATUS_ERROR;
+
+ std::unique_ptr<breakpoint> bp_up
+ (new amd_dbgapi_target_breakpoint (section->objfile->arch (), address));
+
+ breakpoint *bp = install_breakpoint (true, std::move (bp_up), 1);
+
+ info->breakpoint_map.emplace (breakpoint_id.handle, bp);
+ return AMD_DBGAPI_STATUS_SUCCESS;
+}
+
+/* remove_breakpoint callback. */
+
+static amd_dbgapi_status_t
+amd_dbgapi_remove_breakpoint_callback
+ (amd_dbgapi_client_process_id_t client_process_id,
+ amd_dbgapi_breakpoint_id_t breakpoint_id)
+{
+ inferior *inf = reinterpret_cast<inferior *> (client_process_id);
+ struct amd_dbgapi_inferior_info *info = get_amd_dbgapi_inferior_info (inf);
+
+ auto it = info->breakpoint_map.find (breakpoint_id.handle);
+ if (it == info->breakpoint_map.end ())
+ return AMD_DBGAPI_STATUS_ERROR_INVALID_BREAKPOINT_ID;
+
+ delete_breakpoint (it->second);
+ info->breakpoint_map.erase (it);
+
+ return AMD_DBGAPI_STATUS_SUCCESS;
+}
+
+/* Style for some kinds of messages. */
+
+static cli_style_option fatal_error_style
+ ("amd_dbgapi_fatal_error", ui_file_style::RED);
+static cli_style_option warning_style
+ ("amd_dbgapi_warning", ui_file_style::YELLOW);
+
+/* BLACK + BOLD means dark gray. */
+static cli_style_option trace_style
+ ("amd_dbgapi_trace", ui_file_style::BLACK, ui_file_style::BOLD);
+
+/* log_message callback. */
+
+static void
+amd_dbgapi_log_message_callback (amd_dbgapi_log_level_t level,
+ const char *message)
+{
+ gdb::optional<target_terminal::scoped_restore_terminal_state> tstate;
+
+ if (target_supports_terminal_ours ())
+ {
+ tstate.emplace ();
+ target_terminal::ours_for_output ();
+ }
+
+ /* Error and warning messages are meant to be printed to the user. */
+ if (level == AMD_DBGAPI_LOG_LEVEL_FATAL_ERROR
+ || level == AMD_DBGAPI_LOG_LEVEL_WARNING)
+ {
+ begin_line ();
+ ui_file_style style = (level == AMD_DBGAPI_LOG_LEVEL_FATAL_ERROR
+ ? fatal_error_style : warning_style).style ();
+ gdb_printf (gdb_stderr, "%ps\n", styled_string (style, message));
+ return;
+ }
+
+ /* Print other messages as debug logs. TRACE and VERBOSE messages are
+ very verbose, print them dark grey so it's easier to spot other messages
+ through the flood. */
+ if (level >= AMD_DBGAPI_LOG_LEVEL_TRACE)
+ {
+ debug_prefixed_printf (amd_dbgapi_lib_debug_module (), nullptr, "%ps",
+ styled_string (trace_style.style (), message));
+ return;
+ }
+
+ debug_prefixed_printf (amd_dbgapi_lib_debug_module (), nullptr, "%s",
+ message);
+}
+
+/* Callbacks passed to amd_dbgapi_initialize. */
+
+static amd_dbgapi_callbacks_t dbgapi_callbacks = {
+ .allocate_memory = malloc,
+ .deallocate_memory = free,
+ .get_os_pid = amd_dbgapi_get_os_pid_callback,
+ .insert_breakpoint = amd_dbgapi_insert_breakpoint_callback,
+ .remove_breakpoint = amd_dbgapi_remove_breakpoint_callback,
+ .log_message = amd_dbgapi_log_message_callback,
+};
+
+void
+amd_dbgapi_target::close ()
+{
+ if (amd_dbgapi_async_event_handler != nullptr)
+ delete_async_event_handler (&amd_dbgapi_async_event_handler);
+}
+
+/* List of set/show debug amd-dbgapi-lib commands. */
+struct cmd_list_element *set_debug_amd_dbgapi_lib_list;
+struct cmd_list_element *show_debug_amd_dbgapi_lib_list;
+
+/* Mapping from amd-dbgapi log level enum values to text. */
+
+static constexpr const char *debug_amd_dbgapi_lib_log_level_enums[] =
+{
+ /* [AMD_DBGAPI_LOG_LEVEL_NONE] = */ "off",
+ /* [AMD_DBGAPI_LOG_LEVEL_FATAL_ERROR] = */ "error",
+ /* [AMD_DBGAPI_LOG_LEVEL_WARNING] = */ "warning",
+ /* [AMD_DBGAPI_LOG_LEVEL_INFO] = */ "info",
+ /* [AMD_DBGAPI_LOG_LEVEL_TRACE] = */ "trace",
+ /* [AMD_DBGAPI_LOG_LEVEL_VERBOSE] = */ "verbose",
+ nullptr
+};
+
+/* Storage for "set debug amd-dbgapi-lib log-level". */
+
+static const char *debug_amd_dbgapi_lib_log_level
+ = debug_amd_dbgapi_lib_log_level_enums[AMD_DBGAPI_LOG_LEVEL_WARNING];
+
+/* Get the amd-dbgapi library log level requested by the user. */
+
+static amd_dbgapi_log_level_t
+get_debug_amd_dbgapi_lib_log_level ()
+{
+ for (size_t pos = 0;
+ debug_amd_dbgapi_lib_log_level_enums[pos] != nullptr;
+ ++pos)
+ if (debug_amd_dbgapi_lib_log_level
+ == debug_amd_dbgapi_lib_log_level_enums[pos])
+ return static_cast<amd_dbgapi_log_level_t> (pos);
+
+ gdb_assert_not_reached ("invalid log level");
+}
+
+/* Callback for "set debug amd-dbgapi log-level", apply the selected log level
+ to the library. */
+
+static void
+set_debug_amd_dbgapi_lib_log_level (const char *args, int from_tty,
+ struct cmd_list_element *c)
+{
+ amd_dbgapi_set_log_level (get_debug_amd_dbgapi_lib_log_level ());
+}
+
+/* Callback for "show debug amd-dbgapi log-level". */
+
+static void
+show_debug_amd_dbgapi_lib_log_level (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c,
+ const char *value)
+{
+ gdb_printf (file, _("The amd-dbgapi library log level is %s.\n"), value);
+}
+
+/* If the amd-dbgapi library is not attached to any process, finalize and
+ re-initialize it so that the handle ID numbers will all start from the
+ beginning again. This is only for convenience, not essential. */
+
+static void
+maybe_reset_amd_dbgapi ()
+{
+ for (inferior *inf : all_non_exited_inferiors ())
+ {
+ amd_dbgapi_inferior_info *info = get_amd_dbgapi_inferior_info (inf);
+
+ if (info->process_id != AMD_DBGAPI_PROCESS_NONE)
+ return;
+ }
+
+ amd_dbgapi_status_t status = amd_dbgapi_finalize ();
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("amd-dbgapi failed to finalize (%s)"),
+ get_status_string (status));
+
+ status = amd_dbgapi_initialize (&dbgapi_callbacks);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("amd-dbgapi failed to initialize (%s)"),
+ get_status_string (status));
+}
+
+extern initialize_file_ftype _initialize_amd_dbgapi_target;
+
+void
+_initialize_amd_dbgapi_target ()
+{
+ /* Make sure the loaded debugger library version is greater than or equal to
+ the one used to build GDB. */
+ uint32_t major, minor, patch;
+ amd_dbgapi_get_version (&major, &minor, &patch);
+ if (major != AMD_DBGAPI_VERSION_MAJOR || minor < AMD_DBGAPI_VERSION_MINOR)
+ error (_("amd-dbgapi library version mismatch, got %d.%d.%d, need %d.%d+"),
+ major, minor, patch, AMD_DBGAPI_VERSION_MAJOR,
+ AMD_DBGAPI_VERSION_MINOR);
+
+ /* Initialize the AMD Debugger API. */
+ amd_dbgapi_status_t status = amd_dbgapi_initialize (&dbgapi_callbacks);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("amd-dbgapi failed to initialize (%s)"),
+ get_status_string (status));
+
+ /* Set the initial log level. */
+ amd_dbgapi_set_log_level (get_debug_amd_dbgapi_lib_log_level ());
+
+ /* Install observers. */
+ gdb::observers::inferior_created.attach
+ (amd_dbgapi_target_inferior_created,
+ amd_dbgapi_target_inferior_created_observer_token, "amd-dbgapi");
+ gdb::observers::inferior_exit.attach (amd_dbgapi_inferior_exited, "amd-dbgapi");
+ gdb::observers::inferior_pre_detach.attach (amd_dbgapi_inferior_pre_detach, "amd-dbgapi");
+
+ add_basic_prefix_cmd ("amd-dbgapi-lib", no_class,
+ _("Generic command for setting amd-dbgapi library "
+ "debugging flags."),
+ &set_debug_amd_dbgapi_lib_list, 0, &setdebuglist);
+
+ add_show_prefix_cmd ("amd-dbgapi-lib", no_class,
+ _("Generic command for showing amd-dbgapi library "
+ "debugging flags."),
+ &show_debug_amd_dbgapi_lib_list, 0, &showdebuglist);
+
+ add_setshow_enum_cmd ("log-level", class_maintenance,
+ debug_amd_dbgapi_lib_log_level_enums,
+ &debug_amd_dbgapi_lib_log_level,
+ _("Set the amd-dbgapi library log level."),
+ _("Show the amd-dbgapi library log level."),
+ _("off == no logging is enabled\n"
+ "error == fatal errors are reported\n"
+ "warning == fatal errors and warnings are reported\n"
+ "info == fatal errors, warnings, and info "
+ "messages are reported\n"
+ "trace == fatal errors, warnings, info, and "
+ "API tracing messages are reported\n"
+ "verbose == all messages are reported"),
+ set_debug_amd_dbgapi_lib_log_level,
+ show_debug_amd_dbgapi_lib_log_level,
+ &set_debug_amd_dbgapi_lib_list,
+ &show_debug_amd_dbgapi_lib_list);
+
+ add_setshow_boolean_cmd ("amd-dbgapi", class_maintenance,
+ &debug_amd_dbgapi,
+ _("Set debugging of amd-dbgapi target."),
+ _("Show debugging of amd-dbgapi target."),
+ _("\
+When on, print debug messages relating to the amd-dbgapi target."),
+ nullptr, nullptr,
+ &setdebuglist, &showdebuglist);
+}
diff --git a/gdb/amd-dbgapi-target.h b/gdb/amd-dbgapi-target.h
new file mode 100644
index 0000000..beff2ad
--- /dev/null
+++ b/gdb/amd-dbgapi-target.h
@@ -0,0 +1,116 @@
+/* Target used to communicate with the AMD Debugger API.
+
+ Copyright (C) 2019-2022 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifndef AMD_DBGAPI_TARGET_H
+#define AMD_DBGAPI_TARGET_H 1
+
+#include "gdbsupport/observable.h"
+
+#include <amd-dbgapi/amd-dbgapi.h>
+
+struct inferior;
+
+namespace detail
+{
+
+template <typename T>
+using is_amd_dbgapi_handle
+ = gdb::Or<std::is_same<T, amd_dbgapi_address_class_id_t>,
+ std::is_same<T, amd_dbgapi_address_space_id_t>,
+ std::is_same<T, amd_dbgapi_architecture_id_t>,
+ std::is_same<T, amd_dbgapi_agent_id_t>,
+ std::is_same<T, amd_dbgapi_breakpoint_id_t>,
+ std::is_same<T, amd_dbgapi_code_object_id_t>,
+ std::is_same<T, amd_dbgapi_dispatch_id_t>,
+ std::is_same<T, amd_dbgapi_displaced_stepping_id_t>,
+ std::is_same<T, amd_dbgapi_event_id_t>,
+ std::is_same<T, amd_dbgapi_process_id_t>,
+ std::is_same<T, amd_dbgapi_queue_id_t>,
+ std::is_same<T, amd_dbgapi_register_class_id_t>,
+ std::is_same<T, amd_dbgapi_register_id_t>,
+ std::is_same<T, amd_dbgapi_watchpoint_id_t>,
+ std::is_same<T, amd_dbgapi_wave_id_t>>;
+
+} /* namespace detail */
+
+/* Get the token of amd-dbgapi's inferior_created observer. */
+
+const gdb::observers::token &
+ get_amd_dbgapi_target_inferior_created_observer_token ();
+
+/* Comparison operators for amd-dbgapi handle types. */
+
+template <typename T,
+ typename = gdb::Requires<detail::is_amd_dbgapi_handle<T>>>
+bool
+operator== (const T &lhs, const T &rhs)
+{
+ return lhs.handle == rhs.handle;
+}
+
+template <typename T,
+ typename = gdb::Requires<detail::is_amd_dbgapi_handle<T>>>
+bool
+operator!= (const T &lhs, const T &rhs)
+{
+ return !(lhs == rhs);
+}
+
+/* Return true if the given ptid is a GPU thread (wave) ptid. */
+
+static inline bool
+ptid_is_gpu (ptid_t ptid)
+{
+ /* FIXME: Currently using values that are known not to conflict with other
+ processes to indicate if it is a GPU thread. ptid.pid 1 is the init
+ process and is the only process that could have a ptid.lwp of 1. The init
+ process cannot have a GPU. No other process can have a ptid.lwp of 1.
+ The GPU wave ID is stored in the ptid.tid. */
+ return ptid.pid () != 1 && ptid.lwp () == 1;
+}
+
+/* Return INF's amd_dbgapi process id. */
+
+amd_dbgapi_process_id_t get_amd_dbgapi_process_id (inferior *inf);
+
+/* Get the amd-dbgapi wave id for PTID. */
+
+static inline amd_dbgapi_wave_id_t
+get_amd_dbgapi_wave_id (ptid_t ptid)
+{
+ gdb_assert (ptid_is_gpu (ptid));
+ return amd_dbgapi_wave_id_t {
+ static_cast<decltype (amd_dbgapi_wave_id_t::handle)> (ptid.tid ())
+ };
+}
+
+/* Get the textual version of STATUS.
+
+ Always returns non-nullptr, and asserts that STATUS has a valid value. */
+
+static inline const char *
+get_status_string (amd_dbgapi_status_t status)
+{
+ const char *ret;
+ status = amd_dbgapi_get_status_string (status, &ret);
+ gdb_assert (status == AMD_DBGAPI_STATUS_SUCCESS);
+ return ret;
+}
+
+#endif /* AMD_DBGAPI_TARGET_H */
diff --git a/gdb/amdgpu-tdep.c b/gdb/amdgpu-tdep.c
new file mode 100644
index 0000000..fc5e243
--- /dev/null
+++ b/gdb/amdgpu-tdep.c
@@ -0,0 +1,1367 @@
+/* Target-dependent code for the AMDGPU architectures.
+
+ Copyright (C) 2019-2022 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include "defs.h"
+
+#include "amd-dbgapi-target.h"
+#include "amdgpu-tdep.h"
+#include "arch-utils.h"
+#include "disasm.h"
+#include "dwarf2/frame.h"
+#include "frame-unwind.h"
+#include "gdbarch.h"
+#include "gdbsupport/selftest.h"
+#include "gdbtypes.h"
+#include "inferior.h"
+#include "objfiles.h"
+#include "observable.h"
+#include "producer.h"
+#include "reggroups.h"
+
+/* See amdgpu-tdep.h. */
+
+bool
+is_amdgpu_arch (struct gdbarch *arch)
+{
+ gdb_assert (arch != nullptr);
+ return gdbarch_bfd_arch_info (arch)->arch == bfd_arch_amdgcn;
+}
+
+/* See amdgpu-tdep.h. */
+
+amdgpu_gdbarch_tdep *
+get_amdgpu_gdbarch_tdep (gdbarch *arch)
+{
+ return gdbarch_tdep<amdgpu_gdbarch_tdep> (arch);
+}
+
+/* Return the name of register REGNUM. */
+
+static const char *
+amdgpu_register_name (struct gdbarch *gdbarch, int regnum)
+{
+ /* The list of registers reported by amd-dbgapi for a given architecture
+ contains some duplicate names. For instance, there is an "exec" register
+ for waves in the wave32 mode and one for the waves in the wave64 mode.
+ However, at most one register with a given name is actually allocated for
+ a specific wave. If INFERIOR_PTID represents a GPU wave, we query
+ amd-dbgapi to know whether the requested register actually exists for the
+ current wave, so there won't be duplicates in the the register names we
+ report for that wave.
+
+ But there are two known cases where INFERIOR_PTID doesn't represent a GPU
+ wave:
+
+ - The user does "set arch amdgcn:gfxNNN" followed with "maint print
+ registers"
+ - The "register_name" selftest
+
+ In these cases, we can't query amd-dbgapi to know whether we should hide
+ the register or not. The "register_name" selftest checks that there aren't
+ duplicates in the register names returned by the gdbarch, so if we simply
+ return all register names, that test will fail. The other simple option is
+ to never return a register name, which is what we do here. */
+ if (!ptid_is_gpu (inferior_ptid))
+ return "";
+
+ amd_dbgapi_wave_id_t wave_id = get_amd_dbgapi_wave_id (inferior_ptid);
+ amdgpu_gdbarch_tdep *tdep = get_amdgpu_gdbarch_tdep (gdbarch);
+
+ amd_dbgapi_register_exists_t register_exists;
+ if (amd_dbgapi_wave_register_exists (wave_id, tdep->register_ids[regnum],
+ &register_exists)
+ != AMD_DBGAPI_STATUS_SUCCESS
+ || register_exists != AMD_DBGAPI_REGISTER_PRESENT)
+ return "";
+
+ return tdep->register_names[regnum].c_str ();
+}
+
+/* Return the internal register number for the DWARF register number DWARF_REG.
+
+ Return -1 if there's no internal register mapping to DWARF_REG. */
+
+static int
+amdgpu_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int dwarf_reg)
+{
+ amdgpu_gdbarch_tdep *tdep = get_amdgpu_gdbarch_tdep (gdbarch);
+
+ if (dwarf_reg < tdep->dwarf_regnum_to_gdb_regnum.size ())
+ return tdep->dwarf_regnum_to_gdb_regnum[dwarf_reg];
+
+ return -1;
+}
+
+/* A hierarchy of classes to represent an amd-dbgapi register type. */
+
+struct amd_dbgapi_register_type
+{
+ enum class kind
+ {
+ INTEGER,
+ FLOAT,
+ DOUBLE,
+ VECTOR,
+ CODE_PTR,
+ FLAGS,
+ ENUM,
+ };
+
+ amd_dbgapi_register_type (kind kind, std::string lookup_name)
+ : m_kind (kind), m_lookup_name (std::move (lookup_name))
+ {}
+
+ virtual ~amd_dbgapi_register_type () = default;
+
+ /* Return the type's kind. */
+ kind kind () const
+ { return m_kind; }
+
+ /* Name to use for this type in the existing type map. */
+ const std::string &lookup_name () const
+ { return m_lookup_name; }
+
+private:
+ enum kind m_kind;
+ std::string m_lookup_name;
+};
+
+using amd_dbgapi_register_type_up = std::unique_ptr<amd_dbgapi_register_type>;
+
+struct amd_dbgapi_register_type_integer : public amd_dbgapi_register_type
+{
+ amd_dbgapi_register_type_integer (bool is_unsigned, unsigned int bit_size)
+ : amd_dbgapi_register_type
+ (kind::INTEGER,
+ string_printf ("%sint%d", is_unsigned ? "u" : "", bit_size)),
+ m_is_unsigned (is_unsigned),
+ m_bit_size (bit_size)
+ {}
+
+ bool is_unsigned () const
+ { return m_is_unsigned; }
+
+ unsigned int bit_size () const
+ { return m_bit_size; }
+
+private:
+ bool m_is_unsigned;
+ unsigned int m_bit_size;
+};
+
+struct amd_dbgapi_register_type_float : public amd_dbgapi_register_type
+{
+ amd_dbgapi_register_type_float ()
+ : amd_dbgapi_register_type (kind::FLOAT, "float")
+ {}
+};
+
+struct amd_dbgapi_register_type_double : public amd_dbgapi_register_type
+{
+ amd_dbgapi_register_type_double ()
+ : amd_dbgapi_register_type (kind::DOUBLE, "double")
+ {}
+};
+
+struct amd_dbgapi_register_type_vector : public amd_dbgapi_register_type
+{
+ amd_dbgapi_register_type_vector (const amd_dbgapi_register_type &element_type,
+ unsigned int count)
+ : amd_dbgapi_register_type (kind::VECTOR,
+ make_lookup_name (element_type, count)),
+ m_element_type (element_type),
+ m_count (count)
+ {}
+
+ const amd_dbgapi_register_type &element_type () const
+ { return m_element_type; }
+
+ unsigned int count () const
+ { return m_count; }
+
+ static std::string make_lookup_name
+ (const amd_dbgapi_register_type &element_type, unsigned int count)
+ {
+ return string_printf ("%s[%d]", element_type.lookup_name ().c_str (),
+ count);
+ }
+
+private:
+ const amd_dbgapi_register_type &m_element_type;
+ unsigned int m_count;
+};
+
+struct amd_dbgapi_register_type_code_ptr : public amd_dbgapi_register_type
+{
+ amd_dbgapi_register_type_code_ptr ()
+ : amd_dbgapi_register_type (kind::CODE_PTR, "void (*)()")
+ {}
+};
+
+struct amd_dbgapi_register_type_flags : public amd_dbgapi_register_type
+{
+ struct field
+ {
+ std::string name;
+ unsigned int bit_pos_start;
+ unsigned int bit_pos_end;
+ const amd_dbgapi_register_type *type;
+ };
+
+ using container_type = std::vector<field>;
+ using const_iterator_type = container_type::const_iterator;
+
+ amd_dbgapi_register_type_flags (unsigned int bit_size, gdb::string_view name)
+ : amd_dbgapi_register_type (kind::FLAGS,
+ make_lookup_name (bit_size, name)),
+ m_bit_size (bit_size),
+ m_name (std::move (name))
+ {}
+
+ unsigned int bit_size () const
+ { return m_bit_size; }
+
+ void add_field (std::string name, unsigned int bit_pos_start,
+ unsigned int bit_pos_end,
+ const amd_dbgapi_register_type *type)
+ {
+ m_fields.push_back (field {std::move (name), bit_pos_start,
+ bit_pos_end, type});
+ }
+
+ container_type::size_type size () const
+ { return m_fields.size (); }
+
+ const field &operator[] (container_type::size_type pos) const
+ { return m_fields[pos]; }
+
+ const_iterator_type begin () const
+ { return m_fields.begin (); }
+
+ const_iterator_type end () const
+ { return m_fields.end (); }
+
+ const std::string &name () const
+ { return m_name; }
+
+ static std::string make_lookup_name (int bits, gdb::string_view name)
+ {
+ std::string res = string_printf ("flags%d_t ", bits);
+ res.append (name.data (), name.size ());
+ return res;
+ }
+
+private:
+ unsigned int m_bit_size;
+ container_type m_fields;
+ std::string m_name;
+};
+
+using amd_dbgapi_register_type_flags_up
+ = std::unique_ptr<amd_dbgapi_register_type_flags>;
+
+struct amd_dbgapi_register_type_enum : public amd_dbgapi_register_type
+{
+ struct enumerator
+ {
+ std::string name;
+ ULONGEST value;
+ };
+
+ using container_type = std::vector<enumerator>;
+ using const_iterator_type = container_type::const_iterator;
+
+ amd_dbgapi_register_type_enum (gdb::string_view name)
+ : amd_dbgapi_register_type (kind::ENUM, make_lookup_name (name)),
+ m_name (name.data (), name.length ())
+ {}
+
+ void set_bit_size (int bit_size)
+ { m_bit_size = bit_size; }
+
+ unsigned int bit_size () const
+ { return m_bit_size; }
+
+ void add_enumerator (std::string name, ULONGEST value)
+ { m_enumerators.push_back (enumerator {std::move (name), value}); }
+
+ container_type::size_type size () const
+ { return m_enumerators.size (); }
+
+ const enumerator &operator[] (container_type::size_type pos) const
+ { return m_enumerators[pos]; }
+
+ const_iterator_type begin () const
+ { return m_enumerators.begin (); }
+
+ const_iterator_type end () const
+ { return m_enumerators.end (); }
+
+ const std::string &name () const
+ { return m_name; }
+
+ static std::string make_lookup_name (gdb::string_view name)
+ {
+ std::string res = "enum ";
+ res.append (name.data (), name.length ());
+ return res;
+ }
+
+private:
+ unsigned int m_bit_size = 32;
+ container_type m_enumerators;
+ std::string m_name;
+};
+
+using amd_dbgapi_register_type_enum_up
+ = std::unique_ptr<amd_dbgapi_register_type_enum>;
+
+/* Map type lookup names to types. */
+using amd_dbgapi_register_type_map
+ = std::unordered_map<std::string, amd_dbgapi_register_type_up>;
+
+/* Parse S as a ULONGEST, raise an error on overflow. */
+
+static ULONGEST
+try_strtoulst (gdb::string_view s)
+{
+ errno = 0;
+ ULONGEST value = strtoulst (s.data (), nullptr, 0);
+ if (errno != 0)
+ error (_("Failed to parse integer."));
+
+ return value;
+};
+
+/* Shared regex bits. */
+#define IDENTIFIER "[A-Za-z0-9_.]+"
+#define WS "[ \t]+"
+#define WSOPT "[ \t]*"
+
+static const amd_dbgapi_register_type &
+parse_amd_dbgapi_register_type (gdb::string_view type_name,
+ amd_dbgapi_register_type_map &type_map);
+
+
+/* parse_amd_dbgapi_register_type helper for enum types. */
+
+static void
+parse_amd_dbgapi_register_type_enum_fields
+ (amd_dbgapi_register_type_enum &enum_type, gdb::string_view fields)
+{
+ compiled_regex regex (/* name */
+ "^(" IDENTIFIER ")"
+ WSOPT "=" WSOPT
+ /* value */
+ "([0-9]+)"
+ WSOPT "(," WSOPT ")?",
+ REG_EXTENDED,
+ _("Error in AMDGPU enum register type regex"));
+ regmatch_t matches[4];
+
+ while (!fields.empty ())
+ {
+ int res = regex.exec (fields.data (), ARRAY_SIZE (matches), matches, 0);
+ if (res == REG_NOMATCH)
+ error (_("Failed to parse enum fields"));
+
+ auto sv_from_match = [fields] (const regmatch_t &m)
+ { return fields.substr (m.rm_so, m.rm_eo - m.rm_so); };
+
+ gdb::string_view name = sv_from_match (matches[1]);
+ gdb::string_view value_str = sv_from_match (matches[2]);
+ ULONGEST value = try_strtoulst (value_str);
+
+ if (value > std::numeric_limits<uint32_t>::max ())
+ enum_type.set_bit_size (64);
+
+ enum_type.add_enumerator (gdb::to_string (name), value);
+
+ fields = fields.substr (matches[0].rm_eo);
+ }
+}
+
+/* parse_amd_dbgapi_register_type helper for flags types. */
+
+static void
+parse_amd_dbgapi_register_type_flags_fields
+ (amd_dbgapi_register_type_flags &flags_type,
+ int bits, gdb::string_view name, gdb::string_view fields,
+ amd_dbgapi_register_type_map &type_map)
+{
+ gdb_assert (bits == 32 || bits == 64);
+
+ std::string regex_str
+ = string_printf (/* type */
+ "^(bool|uint%d_t|enum" WS IDENTIFIER WSOPT "(\\{[^}]*})?)"
+ WS
+ /* name */
+ "(" IDENTIFIER ")" WSOPT
+ /* bit position */
+ "@([0-9]+)(-[0-9]+)?" WSOPT ";" WSOPT,
+ bits);
+ compiled_regex regex (regex_str.c_str (), REG_EXTENDED,
+ _("Error in AMDGPU register type flags fields regex"));
+ regmatch_t matches[6];
+
+ while (!fields.empty ())
+ {
+ int res = regex.exec (fields.data (), ARRAY_SIZE (matches), matches, 0);
+ if (res == REG_NOMATCH)
+ error (_("Failed to parse flags type fields string"));
+
+ auto sv_from_match = [fields] (const regmatch_t &m)
+ { return fields.substr (m.rm_so, m.rm_eo - m.rm_so); };
+
+ gdb::string_view field_type_str = sv_from_match (matches[1]);
+ gdb::string_view field_name = sv_from_match (matches[3]);
+ gdb::string_view pos_begin_str = sv_from_match (matches[4]);
+ ULONGEST pos_begin = try_strtoulst (pos_begin_str);
+
+ if (field_type_str == "bool")
+ flags_type.add_field (gdb::to_string (field_name), pos_begin, pos_begin,
+ nullptr);
+ else
+ {
+ if (matches[5].rm_so == -1)
+ error (_("Missing end bit position"));
+
+ gdb::string_view pos_end_str = sv_from_match (matches[5]);
+ ULONGEST pos_end = try_strtoulst (pos_end_str.substr (1));
+ const amd_dbgapi_register_type &field_type
+ = parse_amd_dbgapi_register_type (field_type_str, type_map);
+ flags_type.add_field (gdb::to_string (field_name), pos_begin, pos_end,
+ &field_type);
+ }
+
+ fields = fields.substr (matches[0].rm_eo);
+ }
+}
+
+/* parse_amd_dbgapi_register_type helper for scalars. */
+
+static const amd_dbgapi_register_type &
+parse_amd_dbgapi_register_type_scalar (gdb::string_view name,
+ amd_dbgapi_register_type_map &type_map)
+{
+ std::string name_str = gdb::to_string (name);
+ auto it = type_map.find (name_str);
+ if (it != type_map.end ())
+ {
+ enum amd_dbgapi_register_type::kind kind = it->second->kind ();
+ if (kind != amd_dbgapi_register_type::kind::INTEGER
+ && kind != amd_dbgapi_register_type::kind::FLOAT
+ && kind != amd_dbgapi_register_type::kind::DOUBLE
+ && kind != amd_dbgapi_register_type::kind::CODE_PTR)
+ error (_("type mismatch"));
+
+ return *it->second;
+ }
+
+ amd_dbgapi_register_type_up type;
+ if (name == "int32_t")
+ type.reset (new amd_dbgapi_register_type_integer (false, 32));
+ else if (name == "uint32_t")
+ type.reset (new amd_dbgapi_register_type_integer (true, 32));
+ else if (name == "int64_t")
+ type.reset (new amd_dbgapi_register_type_integer (false, 64));
+ else if (name == "uint64_t")
+ type.reset (new amd_dbgapi_register_type_integer (true, 64));
+ else if (name == "float")
+ type.reset (new amd_dbgapi_register_type_float ());
+ else if (name == "double")
+ type.reset (new amd_dbgapi_register_type_double ());
+ else if (name == "void (*)()")
+ type.reset (new amd_dbgapi_register_type_code_ptr ());
+ else
+ error (_("unknown type %s"), name_str.c_str ());
+
+ auto insertion_pair = type_map.emplace (name, std::move (type));
+ return *insertion_pair.first->second;
+}
+
+/* Parse an amd-dbgapi register type string into an amd_dbgapi_register_type
+ object.
+
+ See the documentation of AMD_DBGAPI_REGISTER_INFO_TYPE in amd-dbgapi.h for
+ details about the format. */
+
+static const amd_dbgapi_register_type &
+parse_amd_dbgapi_register_type (gdb::string_view type_str,
+ amd_dbgapi_register_type_map &type_map)
+{
+ size_t pos_open_bracket = type_str.find_last_of ('[');
+ auto sv_from_match = [type_str] (const regmatch_t &m)
+ { return type_str.substr (m.rm_so, m.rm_eo - m.rm_so); };
+
+ if (pos_open_bracket != gdb::string_view::npos)
+ {
+ /* Vector types. */
+ gdb::string_view element_type_str
+ = type_str.substr (0, pos_open_bracket);
+ const amd_dbgapi_register_type &element_type
+ = parse_amd_dbgapi_register_type (element_type_str, type_map);
+
+ size_t pos_close_bracket = type_str.find_last_of (']');
+ gdb_assert (pos_close_bracket != gdb::string_view::npos);
+ gdb::string_view count_str_view
+ = type_str.substr (pos_open_bracket + 1,
+ pos_close_bracket - pos_open_bracket);
+ std::string count_str = gdb::to_string (count_str_view);
+ unsigned int count = std::stoul (count_str);
+
+ std::string lookup_name
+ = amd_dbgapi_register_type_vector::make_lookup_name (element_type, count);
+ auto existing_type_it = type_map.find (lookup_name);
+ if (existing_type_it != type_map.end ())
+ {
+ gdb_assert (existing_type_it->second->kind ()
+ == amd_dbgapi_register_type::kind::VECTOR);
+ return *existing_type_it->second;
+ }
+
+ amd_dbgapi_register_type_up type
+ (new amd_dbgapi_register_type_vector (element_type, count));
+ auto insertion_pair
+ = type_map.emplace (type->lookup_name (), std::move (type));
+ return *insertion_pair.first->second;
+ }
+
+ if (type_str.find ("flags32_t") == 0 || type_str.find ("flags64_t") == 0)
+ {
+ /* Split 'type_str' into 4 tokens: "(type) (name) ({ (fields) })". */
+ compiled_regex regex ("^(flags32_t|flags64_t)"
+ WS "(" IDENTIFIER ")" WSOPT
+ "(\\{" WSOPT "(.*)})?",
+ REG_EXTENDED,
+ _("Error in AMDGPU register type regex"));
+
+ regmatch_t matches[5];
+ int res = regex.exec (type_str.data (), ARRAY_SIZE (matches), matches, 0);
+ if (res == REG_NOMATCH)
+ error (_("Failed to parse flags type string"));
+
+ gdb::string_view flags_keyword = sv_from_match (matches[1]);
+ unsigned int bit_size = flags_keyword == "flags32_t" ? 32 : 64;
+ gdb::string_view name = sv_from_match (matches[2]);
+ std::string lookup_name
+ = amd_dbgapi_register_type_flags::make_lookup_name (bit_size, name);
+ auto existing_type_it = type_map.find (lookup_name);
+
+ if (matches[3].rm_so == -1)
+ {
+ /* No braces, lookup existing type. */
+ if (existing_type_it == type_map.end ())
+ error (_("reference to unknown type %s."),
+ gdb::to_string (name).c_str ());
+
+ if (existing_type_it->second->kind ()
+ != amd_dbgapi_register_type::kind::FLAGS)
+ error (_("type mismatch"));
+
+ return *existing_type_it->second;
+ }
+ else
+ {
+ /* With braces, it's a definition. */
+ if (existing_type_it != type_map.end ())
+ error (_("re-definition of type %s."),
+ gdb::to_string (name).c_str ());
+
+ amd_dbgapi_register_type_flags_up flags_type
+ (new amd_dbgapi_register_type_flags (bit_size, name));
+ gdb::string_view fields_without_braces = sv_from_match (matches[4]);
+
+ parse_amd_dbgapi_register_type_flags_fields
+ (*flags_type, bit_size, name, fields_without_braces, type_map);
+
+ auto insertion_pair
+ = type_map.emplace (flags_type->lookup_name (),
+ std::move (flags_type));
+ return *insertion_pair.first->second;
+ }
+ }
+
+ if (type_str.find ("enum") == 0)
+ {
+ compiled_regex regex ("^enum" WS "(" IDENTIFIER ")" WSOPT "(\\{" WSOPT "([^}]*)})?",
+ REG_EXTENDED,
+ _("Error in AMDGPU register type enum regex"));
+
+ /* Split 'type_name' into 3 tokens: "(name) ( { (fields) } )". */
+ regmatch_t matches[4];
+ int res = regex.exec (type_str.data (), ARRAY_SIZE (matches), matches, 0);
+ if (res == REG_NOMATCH)
+ error (_("Failed to parse flags type string"));
+
+ gdb::string_view name = sv_from_match (matches[1]);
+
+ std::string lookup_name
+ = amd_dbgapi_register_type_enum::make_lookup_name (name);
+ auto existing_type_it = type_map.find (lookup_name);
+
+ if (matches[2].rm_so == -1)
+ {
+ /* No braces, lookup existing type. */
+ if (existing_type_it == type_map.end ())
+ error (_("reference to unknown type %s"),
+ gdb::to_string (name).c_str ());
+
+ if (existing_type_it->second->kind ()
+ != amd_dbgapi_register_type::kind::ENUM)
+ error (_("type mismatch"));
+
+ return *existing_type_it->second;
+ }
+ else
+ {
+ /* With braces, it's a definition. */
+ if (existing_type_it != type_map.end ())
+ error (_("re-definition of type %s"),
+ gdb::to_string (name).c_str ());
+
+ amd_dbgapi_register_type_enum_up enum_type
+ (new amd_dbgapi_register_type_enum (name));
+ gdb::string_view fields_without_braces = sv_from_match (matches[3]);
+
+ parse_amd_dbgapi_register_type_enum_fields
+ (*enum_type, fields_without_braces);
+
+ auto insertion_pair
+ = type_map.emplace (enum_type->lookup_name (),
+ std::move (enum_type));
+ return *insertion_pair.first->second;
+ }
+ }
+
+ return parse_amd_dbgapi_register_type_scalar (type_str, type_map);
+}
+
+/* Convert an amd_dbgapi_register_type object to a GDB type. */
+
+static type *
+amd_dbgapi_register_type_to_gdb_type (const amd_dbgapi_register_type &type,
+ struct gdbarch *gdbarch)
+{
+ switch (type.kind ())
+ {
+ case amd_dbgapi_register_type::kind::INTEGER:
+ {
+ const auto &integer_type
+ = static_cast<const amd_dbgapi_register_type_integer &> (type);
+ switch (integer_type.bit_size ())
+ {
+ case 32:
+ if (integer_type.is_unsigned ())
+ return builtin_type (gdbarch)->builtin_uint32;
+ else
+ return builtin_type (gdbarch)->builtin_int32;
+
+ case 64:
+ if (integer_type.is_unsigned ())
+ return builtin_type (gdbarch)->builtin_uint64;
+ else
+ return builtin_type (gdbarch)->builtin_int64;
+
+ default:
+ gdb_assert_not_reached ("invalid bit size");
+ }
+ }
+
+ case amd_dbgapi_register_type::kind::VECTOR:
+ {
+ const auto &vector_type
+ = static_cast<const amd_dbgapi_register_type_vector &> (type);
+ struct type *element_type
+ = amd_dbgapi_register_type_to_gdb_type (vector_type.element_type (),
+ gdbarch);
+ return init_vector_type (element_type, vector_type.count ());
+ }
+
+ case amd_dbgapi_register_type::kind::FLOAT:
+ return builtin_type (gdbarch)->builtin_float;
+
+ case amd_dbgapi_register_type::kind::DOUBLE:
+ return builtin_type (gdbarch)->builtin_double;
+
+ case amd_dbgapi_register_type::kind::CODE_PTR:
+ return builtin_type (gdbarch)->builtin_func_ptr;
+
+ case amd_dbgapi_register_type::kind::FLAGS:
+ {
+ const auto &flags_type
+ = static_cast<const amd_dbgapi_register_type_flags &> (type);
+ struct type *gdb_type
+ = arch_flags_type (gdbarch, flags_type.name ().c_str (),
+ flags_type.bit_size ());
+
+ for (const auto &field : flags_type)
+ {
+ if (field.type == nullptr)
+ {
+ gdb_assert (field.bit_pos_start == field.bit_pos_end);
+ append_flags_type_flag (gdb_type, field.bit_pos_start,
+ field.name.c_str ());
+ }
+ else
+ {
+ struct type *field_type
+ = amd_dbgapi_register_type_to_gdb_type (*field.type, gdbarch);
+ gdb_assert (field_type != nullptr);
+ append_flags_type_field
+ (gdb_type, field.bit_pos_start,
+ field.bit_pos_end - field.bit_pos_start + 1,
+ field_type, field.name.c_str ());
+ }
+ }
+
+ return gdb_type;
+ }
+
+ case amd_dbgapi_register_type::kind::ENUM:
+ {
+ const auto &enum_type
+ = static_cast<const amd_dbgapi_register_type_enum &> (type);
+ struct type *gdb_type
+ = arch_type (gdbarch, TYPE_CODE_ENUM, enum_type.bit_size (),
+ enum_type.name ().c_str ());
+
+ gdb_type->set_num_fields (enum_type.size ());
+ gdb_type->set_fields
+ ((struct field *) TYPE_ZALLOC (gdb_type, (sizeof (struct field)
+ * enum_type.size ())));
+ gdb_type->set_is_unsigned (true);
+
+ for (size_t i = 0; i < enum_type.size (); ++i)
+ {
+ const auto &field = enum_type[i];
+ gdb_type->field (i).set_name (xstrdup (field.name.c_str ()));
+ gdb_type->field (i).set_loc_enumval (field.value);
+ }
+
+ return gdb_type;
+ }
+
+ default:
+ gdb_assert_not_reached ("unhandled amd_dbgapi_register_type kind");
+ }
+}
+
+static type *
+amdgpu_register_type (struct gdbarch *gdbarch, int regnum)
+{
+ amdgpu_gdbarch_tdep *tdep = get_amdgpu_gdbarch_tdep (gdbarch);
+
+ if (tdep->register_types[regnum] == nullptr)
+ {
+ /* This is done lazily (not at gdbarch initialization time), because it
+ requires access to builtin_type, which can't be used while the gdbarch
+ is not fully initialized. */
+ char *bytes;
+ amd_dbgapi_status_t status
+ = amd_dbgapi_register_get_info (tdep->register_ids[regnum],
+ AMD_DBGAPI_REGISTER_INFO_TYPE,
+ sizeof (bytes), &bytes);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("Failed to get register type from amd-dbgapi"));
+
+ gdb::unique_xmalloc_ptr<char> bytes_holder (bytes);
+ amd_dbgapi_register_type_map type_map;
+ const amd_dbgapi_register_type &register_type
+ = parse_amd_dbgapi_register_type (bytes, type_map);
+ tdep->register_types[regnum]
+ = amd_dbgapi_register_type_to_gdb_type (register_type, gdbarch);
+ gdb_assert (tdep->register_types[regnum] != nullptr);
+ }
+
+ return tdep->register_types[regnum];
+}
+
+static int
+amdgpu_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
+ const reggroup *group)
+{
+ amdgpu_gdbarch_tdep *tdep = get_amdgpu_gdbarch_tdep (gdbarch);
+
+ auto it = tdep->register_class_map.find (group->name ());
+ if (it == tdep->register_class_map.end ())
+ return group == all_reggroup;
+
+ amd_dbgapi_register_class_state_t state;
+ if (amd_dbgapi_register_is_in_register_class (it->second,
+ tdep->register_ids[regnum],
+ &state)
+ != AMD_DBGAPI_STATUS_SUCCESS)
+ return group == all_reggroup;
+
+ return (state == AMD_DBGAPI_REGISTER_CLASS_STATE_MEMBER
+ || group == all_reggroup);
+}
+
+static int
+amdgpu_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *)
+{
+ return get_amdgpu_gdbarch_tdep (gdbarch)->breakpoint_instruction_size;
+}
+
+static const gdb_byte *
+amdgpu_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size)
+{
+ *size = kind;
+ return get_amdgpu_gdbarch_tdep (gdbarch)->breakpoint_instruction_bytes.get ();
+}
+
+struct amdgpu_frame_cache
+{
+ CORE_ADDR base;
+ CORE_ADDR pc;
+};
+
+static amdgpu_frame_cache *
+amdgpu_frame_cache (frame_info_ptr this_frame, void **this_cache)
+{
+ if (*this_cache != nullptr)
+ return (struct amdgpu_frame_cache *) *this_cache;
+
+ struct amdgpu_frame_cache *cache
+ = FRAME_OBSTACK_ZALLOC (struct amdgpu_frame_cache);
+ (*this_cache) = cache;
+
+ cache->pc = get_frame_func (this_frame);
+ cache->base = 0;
+
+ return cache;
+}
+
+static void
+amdgpu_frame_this_id (frame_info_ptr this_frame, void **this_cache,
+ frame_id *this_id)
+{
+ struct amdgpu_frame_cache *cache
+ = amdgpu_frame_cache (this_frame, this_cache);
+
+ if (get_frame_type (this_frame) == INLINE_FRAME)
+ (*this_id) = frame_id_build (cache->base, cache->pc);
+ else
+ (*this_id) = outer_frame_id;
+
+ frame_debug_printf ("this_frame=%d, type=%d, this_id=%s",
+ frame_relative_level (this_frame),
+ get_frame_type (this_frame),
+ this_id->to_string ().c_str ());
+}
+
+static frame_id
+amdgpu_dummy_id (struct gdbarch *gdbarch, frame_info_ptr this_frame)
+{
+ return frame_id_build (0, get_frame_pc (this_frame));
+}
+
+static struct value *
+amdgpu_frame_prev_register (frame_info_ptr this_frame, void **this_cache,
+ int regnum)
+{
+ return frame_unwind_got_register (this_frame, regnum, regnum);
+}
+
+static const frame_unwind amdgpu_frame_unwind = {
+ "amdgpu",
+ NORMAL_FRAME,
+ default_frame_unwind_stop_reason,
+ amdgpu_frame_this_id,
+ amdgpu_frame_prev_register,
+ nullptr,
+ default_frame_sniffer,
+ nullptr,
+ nullptr,
+};
+
+static int
+print_insn_amdgpu (bfd_vma memaddr, struct disassemble_info *info)
+{
+ gdb_disassemble_info *di
+ = static_cast<gdb_disassemble_info *> (info->application_data);
+
+ /* Try to read at most INSTRUCTION_SIZE bytes. */
+
+ amd_dbgapi_size_t instruction_size = gdbarch_max_insn_length (di->arch ());
+ gdb::byte_vector buffer (instruction_size);
+
+ /* read_memory_func doesn't support partial reads, so if the read
+ fails, try one byte less, on and on until we manage to read
+ something. A case where this would happen is if we're trying to
+ read the last instruction at the end of a file section and that
+ instruction is smaller than the largest instruction. */
+ while (instruction_size > 0)
+ {
+ int ret = info->read_memory_func (memaddr, buffer.data (),
+ instruction_size, info);
+ if (ret == 0)
+ break;
+
+ --instruction_size;
+ }
+
+ if (instruction_size == 0)
+ {
+ info->memory_error_func (-1, memaddr, info);
+ return -1;
+ }
+
+ amd_dbgapi_architecture_id_t architecture_id;
+ amd_dbgapi_status_t status
+ = amd_dbgapi_get_architecture (gdbarch_bfd_arch_info (di->arch ())->mach,
+ &architecture_id);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ return -1;
+
+ auto symbolizer = [] (amd_dbgapi_symbolizer_id_t symbolizer_id,
+ amd_dbgapi_global_address_t address,
+ char **symbol_text) -> amd_dbgapi_status_t
+ {
+ gdb_disassemble_info *disasm_info
+ = reinterpret_cast<gdb_disassemble_info *> (symbolizer_id);
+ gdb_printing_disassembler *disasm
+ = dynamic_cast<gdb_printing_disassembler *> (disasm_info);
+ gdb_assert (disasm != nullptr);
+
+ string_file string (disasm->stream ()->can_emit_style_escape ());
+ print_address (disasm->arch (), address, &string);
+ *symbol_text = xstrdup (string.c_str ());
+
+ return AMD_DBGAPI_STATUS_SUCCESS;
+ };
+ auto symbolizer_id = reinterpret_cast<amd_dbgapi_symbolizer_id_t> (di);
+ char *instruction_text = nullptr;
+ status = amd_dbgapi_disassemble_instruction (architecture_id, memaddr,
+ &instruction_size,
+ buffer.data (),
+ &instruction_text,
+ symbolizer_id,
+ symbolizer);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ {
+ size_t alignment;
+ status = amd_dbgapi_architecture_get_info
+ (architecture_id,
+ AMD_DBGAPI_ARCHITECTURE_INFO_MINIMUM_INSTRUCTION_ALIGNMENT,
+ sizeof (alignment), &alignment);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("amd_dbgapi_architecture_get_info failed"));
+
+ info->fprintf_func (di, "<illegal instruction>");
+
+ /* Skip to the next valid instruction address. */
+ return align_up (memaddr + 1, alignment) - memaddr;
+ }
+
+ /* Print the instruction. */
+ info->fprintf_func (di, "%s", instruction_text);
+
+ /* Free the memory allocated by the amd-dbgapi. */
+ xfree (instruction_text);
+
+ return static_cast<int> (instruction_size);
+}
+
+static CORE_ADDR
+amdgpu_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR start_pc)
+{
+ CORE_ADDR func_addr;
+
+ /* See if we can determine the end of the prologue via the symbol table.
+ If so, then return either PC, or the PC after the prologue, whichever
+ is greater. */
+ if (find_pc_partial_function (start_pc, nullptr, &func_addr, nullptr))
+ {
+ CORE_ADDR post_prologue_pc
+ = skip_prologue_using_sal (gdbarch, func_addr);
+ struct compunit_symtab *cust = find_pc_compunit_symtab (func_addr);
+
+ /* Clang always emits a line note before the prologue and another
+ one after. We trust clang to emit usable line notes. */
+ if (post_prologue_pc != 0
+ && cust != nullptr
+ && cust->producer () != nullptr
+ && producer_is_llvm (cust->producer ()))
+ return std::max (start_pc, post_prologue_pc);
+ }
+
+ return start_pc;
+}
+
+static bool
+amdgpu_supports_arch_info (const struct bfd_arch_info *info)
+{
+ amd_dbgapi_architecture_id_t architecture_id;
+ amd_dbgapi_status_t status
+ = amd_dbgapi_get_architecture (info->mach, &architecture_id);
+
+ gdb_assert (status != AMD_DBGAPI_STATUS_ERROR_NOT_INITIALIZED);
+ return status == AMD_DBGAPI_STATUS_SUCCESS;
+}
+
+static struct gdbarch *
+amdgpu_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
+{
+ /* If there is already a candidate, use it. */
+ arches = gdbarch_list_lookup_by_info (arches, &info);
+ if (arches != nullptr)
+ return arches->gdbarch;
+
+ /* Allocate space for the new architecture. */
+ gdbarch_up gdbarch_u
+ (gdbarch_alloc (&info, gdbarch_tdep_up (new amdgpu_gdbarch_tdep)));
+ gdbarch *gdbarch = gdbarch_u.get ();
+ amdgpu_gdbarch_tdep *tdep = gdbarch_tdep<amdgpu_gdbarch_tdep> (gdbarch);
+
+ /* Data types. */
+ set_gdbarch_char_signed (gdbarch, 0);
+ set_gdbarch_ptr_bit (gdbarch, 64);
+ set_gdbarch_addr_bit (gdbarch, 64);
+ set_gdbarch_short_bit (gdbarch, 16);
+ set_gdbarch_int_bit (gdbarch, 32);
+ set_gdbarch_long_bit (gdbarch, 64);
+ set_gdbarch_long_long_bit (gdbarch, 64);
+ set_gdbarch_float_bit (gdbarch, 32);
+ set_gdbarch_double_bit (gdbarch, 64);
+ set_gdbarch_long_double_bit (gdbarch, 128);
+ set_gdbarch_half_format (gdbarch, floatformats_ieee_half);
+ set_gdbarch_float_format (gdbarch, floatformats_ieee_single);
+ set_gdbarch_double_format (gdbarch, floatformats_ieee_double);
+ set_gdbarch_long_double_format (gdbarch, floatformats_ieee_double);
+
+ /* Frame interpretation. */
+ set_gdbarch_skip_prologue (gdbarch, amdgpu_skip_prologue);
+ set_gdbarch_inner_than (gdbarch, core_addr_greaterthan);
+ dwarf2_append_unwinders (gdbarch);
+ frame_unwind_append_unwinder (gdbarch, &amdgpu_frame_unwind);
+ set_gdbarch_dummy_id (gdbarch, amdgpu_dummy_id);
+
+ /* Registers and memory. */
+ amd_dbgapi_architecture_id_t architecture_id;
+ amd_dbgapi_status_t status
+ = amd_dbgapi_get_architecture (gdbarch_bfd_arch_info (gdbarch)->mach,
+ &architecture_id);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ {
+ warning (_("Failed to get architecture from amd-dbgapi"));
+ return nullptr;
+ }
+
+
+ /* Add register groups. */
+ size_t register_class_count;
+ amd_dbgapi_register_class_id_t *register_class_ids;
+ status = amd_dbgapi_architecture_register_class_list (architecture_id,
+ &register_class_count,
+ &register_class_ids);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ {
+ warning (_("Failed to get register class list from amd-dbgapi"));
+ return nullptr;
+ }
+
+ gdb::unique_xmalloc_ptr<amd_dbgapi_register_class_id_t>
+ register_class_ids_holder (register_class_ids);
+
+ for (size_t i = 0; i < register_class_count; ++i)
+ {
+ char *bytes;
+ status = amd_dbgapi_architecture_register_class_get_info
+ (register_class_ids[i], AMD_DBGAPI_REGISTER_CLASS_INFO_NAME,
+ sizeof (bytes), &bytes);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ {
+ warning (_("Failed to get register class name from amd-dbgapi"));
+ return nullptr;
+ }
+
+ gdb::unique_xmalloc_ptr<char> name (bytes);
+
+ auto inserted = tdep->register_class_map.emplace (name.get (),
+ register_class_ids[i]);
+ gdb_assert (inserted.second);
+
+ /* Avoid creating a user reggroup with the same name as some built-in
+ reggroup, such as "general", "system", "vector", etc. */
+ if (reggroup_find (gdbarch, name.get ()) != nullptr)
+ continue;
+
+ /* Allocate the reggroup in the gdbarch. */
+ reggroup_add
+ (gdbarch, reggroup_gdbarch_new (gdbarch, name.get (), USER_REGGROUP));
+ }
+
+ /* Add registers. */
+ size_t register_count;
+ amd_dbgapi_register_id_t *register_ids;
+ status = amd_dbgapi_architecture_register_list (architecture_id,
+ &register_count,
+ &register_ids);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ {
+ warning (_("Failed to get register list from amd-dbgapi"));
+ return nullptr;
+ }
+
+ gdb::unique_xmalloc_ptr<amd_dbgapi_register_id_t> register_ids_holder
+ (register_ids);
+
+ tdep->register_ids.insert (tdep->register_ids.end (), &register_ids[0],
+ &register_ids[register_count]);
+
+ tdep->register_properties.resize (register_count,
+ AMD_DBGAPI_REGISTER_PROPERTY_NONE);
+ for (size_t regnum = 0; regnum < register_count; ++regnum)
+ {
+ auto &register_properties = tdep->register_properties[regnum];
+ if (amd_dbgapi_register_get_info (register_ids[regnum],
+ AMD_DBGAPI_REGISTER_INFO_PROPERTIES,
+ sizeof (register_properties),
+ &register_properties)
+ != AMD_DBGAPI_STATUS_SUCCESS)
+ {
+ warning (_("Failed to get register properties from amd-dbgapi"));
+ return nullptr;
+ }
+ }
+
+ set_gdbarch_num_regs (gdbarch, register_count);
+ set_gdbarch_num_pseudo_regs (gdbarch, 0);
+
+ tdep->register_names.resize (register_count);
+ tdep->register_types.resize (register_count);
+ for (size_t i = 0; i < register_count; ++i)
+ {
+ /* Set amd-dbgapi register id -> gdb regnum mapping. */
+ tdep->regnum_map.emplace (tdep->register_ids[i], i);
+
+ /* Get register name. */
+ char *bytes;
+ status = amd_dbgapi_register_get_info (tdep->register_ids[i],
+ AMD_DBGAPI_REGISTER_INFO_NAME,
+ sizeof (bytes), &bytes);
+ if (status == AMD_DBGAPI_STATUS_SUCCESS)
+ {
+ tdep->register_names[i] = bytes;
+ xfree (bytes);
+ }
+
+ /* Get register DWARF number. */
+ uint64_t dwarf_num;
+ status = amd_dbgapi_register_get_info (tdep->register_ids[i],
+ AMD_DBGAPI_REGISTER_INFO_DWARF,
+ sizeof (dwarf_num), &dwarf_num);
+ if (status == AMD_DBGAPI_STATUS_SUCCESS)
+ {
+ if (dwarf_num >= tdep->dwarf_regnum_to_gdb_regnum.size ())
+ tdep->dwarf_regnum_to_gdb_regnum.resize (dwarf_num + 1, -1);
+
+ tdep->dwarf_regnum_to_gdb_regnum[dwarf_num] = i;
+ }
+ }
+
+ amd_dbgapi_register_id_t pc_register_id;
+ status = amd_dbgapi_architecture_get_info
+ (architecture_id, AMD_DBGAPI_ARCHITECTURE_INFO_PC_REGISTER,
+ sizeof (pc_register_id), &pc_register_id);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ {
+ warning (_("Failed to get PC register from amd-dbgapi"));
+ return nullptr;
+ }
+
+ set_gdbarch_pc_regnum (gdbarch, tdep->regnum_map[pc_register_id]);
+ set_gdbarch_ps_regnum (gdbarch, -1);
+ set_gdbarch_sp_regnum (gdbarch, -1);
+ set_gdbarch_fp0_regnum (gdbarch, -1);
+
+ set_gdbarch_dwarf2_reg_to_regnum (gdbarch, amdgpu_dwarf_reg_to_regnum);
+
+ /* Register representation. */
+ set_gdbarch_register_name (gdbarch, amdgpu_register_name);
+ set_gdbarch_register_type (gdbarch, amdgpu_register_type);
+ set_gdbarch_register_reggroup_p (gdbarch, amdgpu_register_reggroup_p);
+
+ /* Disassembly. */
+ set_gdbarch_print_insn (gdbarch, print_insn_amdgpu);
+
+ /* Instructions. */
+ amd_dbgapi_size_t max_insn_length = 0;
+ status = amd_dbgapi_architecture_get_info
+ (architecture_id, AMD_DBGAPI_ARCHITECTURE_INFO_LARGEST_INSTRUCTION_SIZE,
+ sizeof (max_insn_length), &max_insn_length);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("amd_dbgapi_architecture_get_info failed"));
+
+ set_gdbarch_max_insn_length (gdbarch, max_insn_length);
+
+ status = amd_dbgapi_architecture_get_info
+ (architecture_id, AMD_DBGAPI_ARCHITECTURE_INFO_BREAKPOINT_INSTRUCTION_SIZE,
+ sizeof (tdep->breakpoint_instruction_size),
+ &tdep->breakpoint_instruction_size);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("amd_dbgapi_architecture_get_info failed"));
+
+ gdb_byte *breakpoint_instruction_bytes;
+ status = amd_dbgapi_architecture_get_info
+ (architecture_id, AMD_DBGAPI_ARCHITECTURE_INFO_BREAKPOINT_INSTRUCTION,
+ sizeof (breakpoint_instruction_bytes), &breakpoint_instruction_bytes);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("amd_dbgapi_architecture_get_info failed"));
+
+ tdep->breakpoint_instruction_bytes.reset (breakpoint_instruction_bytes);
+
+ set_gdbarch_breakpoint_kind_from_pc (gdbarch,
+ amdgpu_breakpoint_kind_from_pc);
+ set_gdbarch_sw_breakpoint_from_kind (gdbarch,
+ amdgpu_sw_breakpoint_from_kind);
+
+ amd_dbgapi_size_t pc_adjust;
+ status = amd_dbgapi_architecture_get_info
+ (architecture_id,
+ AMD_DBGAPI_ARCHITECTURE_INFO_BREAKPOINT_INSTRUCTION_PC_ADJUST,
+ sizeof (pc_adjust), &pc_adjust);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ error (_("amd_dbgapi_architecture_get_info failed"));
+
+ set_gdbarch_decr_pc_after_break (gdbarch, pc_adjust);
+
+ return gdbarch_u.release ();
+}
+
+#if defined GDB_SELF_TEST
+
+static void
+amdgpu_register_type_parse_test ()
+{
+ {
+ /* A type that exercises flags and enums, in particular looking up an
+ existing enum type by name. */
+ const char *flags_type_str =
+ "flags32_t mode { \
+ enum fp_round { \
+ NEAREST_EVEN = 0, \
+ PLUS_INF = 1, \
+ MINUS_INF = 2, \
+ ZERO = 3 \
+ } FP_ROUND.32 @0-1; \
+ enum fp_round FP_ROUND.64_16 @2-3; \
+ enum fp_denorm { \
+ FLUSH_SRC_DST = 0, \
+ FLUSH_DST = 1, \
+ FLUSH_SRC = 2, \
+ FLUSH_NONE = 3 \
+ } FP_DENORM.32 @4-5; \
+ enum fp_denorm FP_DENORM.64_16 @6-7; \
+ bool DX10_CLAMP @8; \
+ bool IEEE @9; \
+ bool LOD_CLAMPED @10; \
+ bool DEBUG_EN @11; \
+ bool EXCP_EN.INVALID @12; \
+ bool EXCP_EN.DENORM @13; \
+ bool EXCP_EN.DIV0 @14; \
+ bool EXCP_EN.OVERFLOW @15; \
+ bool EXCP_EN.UNDERFLOW @16; \
+ bool EXCP_EN.INEXACT @17; \
+ bool EXCP_EN.INT_DIV0 @18; \
+ bool EXCP_EN.ADDR_WATCH @19; \
+ bool FP16_OVFL @23; \
+ bool POPS_PACKER0 @24; \
+ bool POPS_PACKER1 @25; \
+ bool DISABLE_PERF @26; \
+ bool GPR_IDX_EN @27; \
+ bool VSKIP @28; \
+ uint32_t CSP @29-31; \
+ }";
+ amd_dbgapi_register_type_map type_map;
+ const amd_dbgapi_register_type &type
+ = parse_amd_dbgapi_register_type (flags_type_str, type_map);
+
+ gdb_assert (type.kind () == amd_dbgapi_register_type::kind::FLAGS);
+
+ const auto &f = static_cast<const amd_dbgapi_register_type_flags &> (type);
+ gdb_assert (f.size () == 23);
+
+ /* Check the two "FP_ROUND" fields. */
+ auto check_fp_round_field
+ = [] (const char *name, const amd_dbgapi_register_type_flags::field &field)
+ {
+ gdb_assert (field.name == name);
+ gdb_assert (field.type->kind ()
+ == amd_dbgapi_register_type::kind::ENUM);
+
+ const auto &e
+ = static_cast<const amd_dbgapi_register_type_enum &> (*field.type);
+ gdb_assert (e.size () == 4);
+ gdb_assert (e[0].name == "NEAREST_EVEN");
+ gdb_assert (e[0].value == 0);
+ gdb_assert (e[3].name == "ZERO");
+ gdb_assert (e[3].value == 3);
+ };
+
+ check_fp_round_field ("FP_ROUND.32", f[0]);
+ check_fp_round_field ("FP_ROUND.64_16", f[1]);
+
+ /* Check the "CSP" field. */
+ gdb_assert (f[22].name == "CSP");
+ gdb_assert (f[22].type->kind () == amd_dbgapi_register_type::kind::INTEGER);
+
+ const auto &i
+ = static_cast<const amd_dbgapi_register_type_integer &> (*f[22].type);
+ gdb_assert (i.bit_size () == 32);
+ gdb_assert (i.is_unsigned ());
+ }
+
+ {
+ /* Test the vector type. */
+ const char *vector_type_str = "int32_t[64]";
+ amd_dbgapi_register_type_map type_map;
+ const amd_dbgapi_register_type &type
+ = parse_amd_dbgapi_register_type (vector_type_str, type_map);
+
+ gdb_assert (type.kind () == amd_dbgapi_register_type::kind::VECTOR);
+
+ const auto &v = static_cast<const amd_dbgapi_register_type_vector &> (type);
+ gdb_assert (v.count () == 64);
+
+ const auto &et = v.element_type ();
+ gdb_assert (et.kind () == amd_dbgapi_register_type::kind::INTEGER);
+
+ const auto &i = static_cast<const amd_dbgapi_register_type_integer &> (et);
+ gdb_assert (i.bit_size () == 32);
+ gdb_assert (!i.is_unsigned ());
+ }
+}
+
+#endif
+
+void _initialize_amdgpu_tdep ();
+
+void
+_initialize_amdgpu_tdep ()
+{
+ gdbarch_register (bfd_arch_amdgcn, amdgpu_gdbarch_init, NULL,
+ amdgpu_supports_arch_info);
+#if defined GDB_SELF_TEST
+ selftests::register_test ("amdgpu-register-type-parse-flags-fields",
+ amdgpu_register_type_parse_test);
+#endif
+}
diff --git a/gdb/amdgpu-tdep.h b/gdb/amdgpu-tdep.h
new file mode 100644
index 0000000..24081eb
--- /dev/null
+++ b/gdb/amdgpu-tdep.h
@@ -0,0 +1,93 @@
+/* Target-dependent code for the AMDGPU architectures.
+
+ Copyright (C) 2019-2022 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifndef AMDGPU_TDEP_H
+#define AMDGPU_TDEP_H
+
+#include "gdbarch.h"
+
+#include <amd-dbgapi/amd-dbgapi.h>
+#include <unordered_map>
+
+/* Provide std::unordered_map::Hash for amd_dbgapi_register_id_t. */
+struct register_id_hash
+{
+ size_t
+ operator() (const amd_dbgapi_register_id_t &register_id) const
+ {
+ return std::hash<decltype (register_id.handle)> () (register_id.handle);
+ }
+};
+
+/* Provide std::unordered_map::Equal for amd_dbgapi_register_id_t. */
+struct register_id_equal_to
+{
+ bool
+ operator() (const amd_dbgapi_register_id_t &lhs,
+ const amd_dbgapi_register_id_t &rhs) const
+ {
+ return std::equal_to<decltype (lhs.handle)> () (lhs.handle, rhs.handle);
+ }
+};
+
+/* AMDGPU architecture specific information. */
+struct amdgpu_gdbarch_tdep : gdbarch_tdep_base
+{
+ /* This architecture's breakpoint instruction. */
+ gdb::unique_xmalloc_ptr<gdb_byte> breakpoint_instruction_bytes;
+ size_t breakpoint_instruction_size;
+
+ /* A vector of register_ids indexed by their equivalent gdb regnum. */
+ std::vector<amd_dbgapi_register_id_t> register_ids;
+
+ /* A vector of register_properties indexed by their equivalent gdb regnum. */
+ std::vector<amd_dbgapi_register_properties_t> register_properties;
+
+ /* A vector of register names indexed by their equivalent gdb regnum. */
+ std::vector<std::string> register_names;
+
+ /* A vector of register types created from the amd-dbgapi type strings,
+ indexed by their equivalent gdb regnum. These are computed lazily by
+ amdgpu_register_type, entries that haven't been computed yet are
+ nullptr. */
+ std::vector<type *> register_types;
+
+ /* A vector of GDB register numbers indexed by DWARF register number.
+
+ Unused DWARF register numbers map to value -1. */
+ std::vector<int> dwarf_regnum_to_gdb_regnum;
+
+ /* A map of gdb regnums keyed by they equivalent register_id. */
+ std::unordered_map<amd_dbgapi_register_id_t, int, register_id_hash,
+ register_id_equal_to>
+ regnum_map;
+
+ /* A map of register_class_ids keyed by their name. */
+ std::unordered_map<std::string, amd_dbgapi_register_class_id_t>
+ register_class_map;
+};
+
+/* Return true if GDBARCH is of an AMDGPU architecture. */
+bool is_amdgpu_arch (struct gdbarch *gdbarch);
+
+/* Return the amdgpu-specific data associated to ARCH. */
+
+amdgpu_gdbarch_tdep *get_amdgpu_gdbarch_tdep (gdbarch *arch);
+
+#endif /* AMDGPU_TDEP_H */
diff --git a/gdb/configure b/gdb/configure
index 0455af1..113b7cf 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -770,11 +770,10 @@ PKGVERSION
CODESIGN_CERT
DEBUGINFOD_LIBS
DEBUGINFOD_CFLAGS
-PKG_CONFIG_LIBDIR
-PKG_CONFIG_PATH
-PKG_CONFIG
HAVE_NATIVE_GCORE_TARGET
TARGET_OBS
+AMD_DBGAPI_LIBS
+AMD_DBGAPI_CFLAGS
ENABLE_BFD_64_BIT_FALSE
ENABLE_BFD_64_BIT_TRUE
subdirs
@@ -796,6 +795,9 @@ INCINTL
LIBINTL_DEP
LIBINTL
USE_NLS
+PKG_CONFIG_LIBDIR
+PKG_CONFIG_PATH
+PKG_CONFIG
CCDEPMODE
DEPDIR
am__leading_dot
@@ -909,6 +911,7 @@ with_auto_load_dir
with_auto_load_safe_path
enable_targets
enable_64_bit_bfd
+with_amd_dbgapi
enable_gdbmi
enable_tui
enable_gdbtk
@@ -975,11 +978,13 @@ CXXFLAGS
CCC
CPP
CXXCPP
-MAKEINFO
-MAKEINFOFLAGS
PKG_CONFIG
PKG_CONFIG_PATH
PKG_CONFIG_LIBDIR
+MAKEINFO
+MAKEINFOFLAGS
+AMD_DBGAPI_CFLAGS
+AMD_DBGAPI_LIBS
DEBUGINFOD_CFLAGS
DEBUGINFOD_LIBS
YACC
@@ -1668,6 +1673,7 @@ Optional Packages:
[--with-auto-load-dir]
--without-auto-load-safe-path
do not restrict auto-loaded files locations
+ --with-amd-dbgapi support for the amd-dbgapi target (yes / no / auto)
--with-debuginfod Enable debuginfo lookups with debuginfod
(auto/yes/no)
--with-libunwind-ia64 use libunwind frame unwinding for ia64 targets
@@ -1734,14 +1740,18 @@ Some influential environment variables:
CXXFLAGS C++ compiler flags
CPP C preprocessor
CXXCPP C++ preprocessor
- MAKEINFO Parent configure detects if it is of sufficient version.
- MAKEINFOFLAGS
- Parameters for MAKEINFO.
PKG_CONFIG path to pkg-config utility
PKG_CONFIG_PATH
directories to add to pkg-config's search path
PKG_CONFIG_LIBDIR
path overriding pkg-config's built-in search path
+ MAKEINFO Parent configure detects if it is of sufficient version.
+ MAKEINFOFLAGS
+ Parameters for MAKEINFO.
+ AMD_DBGAPI_CFLAGS
+ C compiler flags for AMD_DBGAPI, overriding pkg-config
+ AMD_DBGAPI_LIBS
+ linker flags for AMD_DBGAPI, overriding pkg-config
DEBUGINFOD_CFLAGS
C compiler flags for DEBUGINFOD, overriding pkg-config
DEBUGINFOD_LIBS
@@ -11439,7 +11449,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 11442 "configure"
+#line 11452 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -11545,7 +11555,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 11548 "configure"
+#line 11558 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -17525,6 +17535,130 @@ else CCDEPMODE=depmode=$am_cv_CC_dependencies_compiler_type
fi
+# Since the first call to PKG_CHECK_MODULES may not happen (is guarded by
+# a condition), we must call PKG_PROG_PKG_CONFIG explicitly to probe for
+# pkg-config.
+
+
+
+
+
+
+
+if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args.
+set dummy ${ac_tool_prefix}pkg-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_PKG_CONFIG+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ case $PKG_CONFIG in
+ [\\/]* | ?:[\\/]*)
+ ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.
+ ;;
+ *)
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+ ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+ ;;
+esac
+fi
+PKG_CONFIG=$ac_cv_path_PKG_CONFIG
+if test -n "$PKG_CONFIG"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
+$as_echo "$PKG_CONFIG" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_path_PKG_CONFIG"; then
+ ac_pt_PKG_CONFIG=$PKG_CONFIG
+ # Extract the first word of "pkg-config", so it can be a program name with args.
+set dummy pkg-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_ac_pt_PKG_CONFIG+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ case $ac_pt_PKG_CONFIG in
+ [\\/]* | ?:[\\/]*)
+ ac_cv_path_ac_pt_PKG_CONFIG="$ac_pt_PKG_CONFIG" # Let the user override the test with a path.
+ ;;
+ *)
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+ ac_cv_path_ac_pt_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+ ;;
+esac
+fi
+ac_pt_PKG_CONFIG=$ac_cv_path_ac_pt_PKG_CONFIG
+if test -n "$ac_pt_PKG_CONFIG"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_PKG_CONFIG" >&5
+$as_echo "$ac_pt_PKG_CONFIG" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_pt_PKG_CONFIG" = x; then
+ PKG_CONFIG=""
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ PKG_CONFIG=$ac_pt_PKG_CONFIG
+ fi
+else
+ PKG_CONFIG="$ac_cv_path_PKG_CONFIG"
+fi
+
+fi
+if test -n "$PKG_CONFIG"; then
+ _pkg_min_version=0.9.0
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking pkg-config is at least version $_pkg_min_version" >&5
+$as_echo_n "checking pkg-config is at least version $_pkg_min_version... " >&6; }
+ if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ PKG_CONFIG=""
+ fi
+fi
+
CONFIG_OBS=
CONFIG_DEPS=
@@ -17985,6 +18119,157 @@ if test x${all_targets} = xtrue; then
fi
fi
+# AMD debugger API support.
+
+
+# Check whether --with-amd-dbgapi was given.
+if test "${with_amd_dbgapi+set}" = set; then :
+ withval=$with_amd_dbgapi;
+ case $withval in
+ yes | no | auto)
+ ;;
+ *)
+ as_fn_error $? "bad value $withval for --with-amd-dbgapi" "$LINENO" 5
+ ;;
+ esac
+
+else
+ with_amd_dbgapi=auto
+fi
+
+
+# If the user passes --without-amd-dbgapi but also explicitly enables a target
+# that requires amd-dbgapi, it is an error.
+if test "$with_amd_dbgapi" = no -a "$gdb_require_amd_dbgapi" = true; then
+ as_fn_error $? "an explicitly enabled target requires amd-dbgapi, but amd-dbgapi is explicitly disabled" "$LINENO" 5
+fi
+
+# Look for amd-dbgapi if:
+#
+# - a target architecture requiring it has explicitly been enabled, or
+# - --enable-targets=all was provided and the user did not explicitly disable
+# amd-dbgapi support
+if test "$gdb_require_amd_dbgapi" = true \
+ -o \( "$all_targets" = true -a "$with_amd_dbgapi" != no \); then
+ # amd-dbgapi version 0.68 is part of ROCm 5.4. There is no guarantee of API
+ # stability until amd-dbgapi hits 1.0, but for convenience, still check for
+ # greater or equal that version. It can be handy when testing with a newer
+ # version of the library.
+
+pkg_failed=no
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for amd-dbgapi >= 0.68.0" >&5
+$as_echo_n "checking for amd-dbgapi >= 0.68.0... " >&6; }
+
+if test -n "$AMD_DBGAPI_CFLAGS"; then
+ pkg_cv_AMD_DBGAPI_CFLAGS="$AMD_DBGAPI_CFLAGS"
+ elif test -n "$PKG_CONFIG"; then
+ if test -n "$PKG_CONFIG" && \
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"amd-dbgapi >= 0.68.0\""; } >&5
+ ($PKG_CONFIG --exists --print-errors "amd-dbgapi >= 0.68.0") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then
+ pkg_cv_AMD_DBGAPI_CFLAGS=`$PKG_CONFIG --cflags "amd-dbgapi >= 0.68.0" 2>/dev/null`
+ test "x$?" != "x0" && pkg_failed=yes
+else
+ pkg_failed=yes
+fi
+ else
+ pkg_failed=untried
+fi
+if test -n "$AMD_DBGAPI_LIBS"; then
+ pkg_cv_AMD_DBGAPI_LIBS="$AMD_DBGAPI_LIBS"
+ elif test -n "$PKG_CONFIG"; then
+ if test -n "$PKG_CONFIG" && \
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"amd-dbgapi >= 0.68.0\""; } >&5
+ ($PKG_CONFIG --exists --print-errors "amd-dbgapi >= 0.68.0") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then
+ pkg_cv_AMD_DBGAPI_LIBS=`$PKG_CONFIG --libs "amd-dbgapi >= 0.68.0" 2>/dev/null`
+ test "x$?" != "x0" && pkg_failed=yes
+else
+ pkg_failed=yes
+fi
+ else
+ pkg_failed=untried
+fi
+
+if test $pkg_failed = no; then
+ pkg_save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS $pkg_cv_AMD_DBGAPI_LIBS"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+
+else
+ pkg_failed=yes
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+ LDFLAGS=$pkg_save_LDFLAGS
+fi
+
+
+
+if test $pkg_failed = yes; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
+if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
+ _pkg_short_errors_supported=yes
+else
+ _pkg_short_errors_supported=no
+fi
+ if test $_pkg_short_errors_supported = yes; then
+ AMD_DBGAPI_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "amd-dbgapi >= 0.68.0" 2>&1`
+ else
+ AMD_DBGAPI_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "amd-dbgapi >= 0.68.0" 2>&1`
+ fi
+ # Put the nasty error message in config.log where it belongs
+ echo "$AMD_DBGAPI_PKG_ERRORS" >&5
+
+ has_amd_dbgapi=no
+elif test $pkg_failed = untried; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ has_amd_dbgapi=no
+else
+ AMD_DBGAPI_CFLAGS=$pkg_cv_AMD_DBGAPI_CFLAGS
+ AMD_DBGAPI_LIBS=$pkg_cv_AMD_DBGAPI_LIBS
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ has_amd_dbgapi=yes
+fi
+
+ if test "$has_amd_dbgapi" = "yes"; then
+ TARGET_OBS="$TARGET_OBS amd-dbgapi-target.o"
+
+ # If --enable-targets=all was provided, use the list of all files depending
+ # on amd-dbgapi that is hardcoded in the Makefile. Else, the appropriate
+ # architecture entry in configure.tgt will have added the files to
+ # gdb_target_obs.
+ if test "$all_targets" = true; then
+ TARGET_OBS="$TARGET_OBS \$(ALL_AMD_DBGAPI_TARGET_OBS)"
+ fi
+ elif test "$gdb_require_amd_dbgapi" = true -o "$with_amd_dbgapi" = yes; then
+ # amd-dbgapi was not found and...
+ #
+ # - a target requiring it was explicitly enabled, or
+ # - the user explicitly wants to enable amd-dbgapi
+ as_fn_error $? "amd-dbgapi is required, but cannot find an appropriate version: $AMD_DBGAPI_PKG_ERRORS" "$LINENO" 5
+ fi
+fi
+
@@ -18087,126 +18372,6 @@ esac
# Handle optional debuginfod support
-
-
-
-
-
-
-if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
- if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args.
-set dummy ${ac_tool_prefix}pkg-config; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_PKG_CONFIG+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- case $PKG_CONFIG in
- [\\/]* | ?:[\\/]*)
- ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.
- ;;
- *)
- as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
- ;;
-esac
-fi
-PKG_CONFIG=$ac_cv_path_PKG_CONFIG
-if test -n "$PKG_CONFIG"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
-$as_echo "$PKG_CONFIG" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_path_PKG_CONFIG"; then
- ac_pt_PKG_CONFIG=$PKG_CONFIG
- # Extract the first word of "pkg-config", so it can be a program name with args.
-set dummy pkg-config; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_ac_pt_PKG_CONFIG+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- case $ac_pt_PKG_CONFIG in
- [\\/]* | ?:[\\/]*)
- ac_cv_path_ac_pt_PKG_CONFIG="$ac_pt_PKG_CONFIG" # Let the user override the test with a path.
- ;;
- *)
- as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_path_ac_pt_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
- ;;
-esac
-fi
-ac_pt_PKG_CONFIG=$ac_cv_path_ac_pt_PKG_CONFIG
-if test -n "$ac_pt_PKG_CONFIG"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_PKG_CONFIG" >&5
-$as_echo "$ac_pt_PKG_CONFIG" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_pt_PKG_CONFIG" = x; then
- PKG_CONFIG=""
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- PKG_CONFIG=$ac_pt_PKG_CONFIG
- fi
-else
- PKG_CONFIG="$ac_cv_path_PKG_CONFIG"
-fi
-
-fi
-if test -n "$PKG_CONFIG"; then
- _pkg_min_version=0.9.0
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking pkg-config is at least version $_pkg_min_version" >&5
-$as_echo_n "checking pkg-config is at least version $_pkg_min_version... " >&6; }
- if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
- else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
- PKG_CONFIG=""
- fi
-fi
-
# Handle optional debuginfod support
# Check whether --with-debuginfod was given.
diff --git a/gdb/configure.ac b/gdb/configure.ac
index 151f091..7c7bf88 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -61,6 +61,11 @@ AX_CXX_COMPILE_STDCXX(11, , mandatory)
ZW_CREATE_DEPDIR
ZW_PROG_COMPILER_DEPENDENCIES([CC])
+# Since the first call to PKG_CHECK_MODULES may not happen (is guarded by
+# a condition), we must call PKG_PROG_PKG_CONFIG explicitly to probe for
+# pkg-config.
+PKG_PROG_PKG_CONFIG
+
dnl List of object files and targets accumulated by configure.
CONFIG_OBS=
@@ -241,6 +246,53 @@ if test x${all_targets} = xtrue; then
fi
fi
+# AMD debugger API support.
+
+AC_ARG_WITH([amd-dbgapi],
+ [AS_HELP_STRING([--with-amd-dbgapi],
+ [support for the amd-dbgapi target (yes / no / auto)])],
+ [GDB_CHECK_YES_NO_AUTO_VAL([$withval], [--with-amd-dbgapi])],
+ [with_amd_dbgapi=auto])
+
+# If the user passes --without-amd-dbgapi but also explicitly enables a target
+# that requires amd-dbgapi, it is an error.
+if test "$with_amd_dbgapi" = no -a "$gdb_require_amd_dbgapi" = true; then
+ AC_MSG_ERROR([an explicitly enabled target requires amd-dbgapi, but amd-dbgapi is explicitly disabled])
+fi
+
+# Look for amd-dbgapi if:
+#
+# - a target architecture requiring it has explicitly been enabled, or
+# - --enable-targets=all was provided and the user did not explicitly disable
+# amd-dbgapi support
+if test "$gdb_require_amd_dbgapi" = true \
+ -o \( "$all_targets" = true -a "$with_amd_dbgapi" != no \); then
+ # amd-dbgapi version 0.68 is part of ROCm 5.4. There is no guarantee of API
+ # stability until amd-dbgapi hits 1.0, but for convenience, still check for
+ # greater or equal that version. It can be handy when testing with a newer
+ # version of the library.
+ PKG_CHECK_MODULES([AMD_DBGAPI], [amd-dbgapi >= 0.68.0],
+ [has_amd_dbgapi=yes], [has_amd_dbgapi=no])
+
+ if test "$has_amd_dbgapi" = "yes"; then
+ TARGET_OBS="$TARGET_OBS amd-dbgapi-target.o"
+
+ # If --enable-targets=all was provided, use the list of all files depending
+ # on amd-dbgapi that is hardcoded in the Makefile. Else, the appropriate
+ # architecture entry in configure.tgt will have added the files to
+ # gdb_target_obs.
+ if test "$all_targets" = true; then
+ TARGET_OBS="$TARGET_OBS \$(ALL_AMD_DBGAPI_TARGET_OBS)"
+ fi
+ elif test "$gdb_require_amd_dbgapi" = true -o "$with_amd_dbgapi" = yes; then
+ # amd-dbgapi was not found and...
+ #
+ # - a target requiring it was explicitly enabled, or
+ # - the user explicitly wants to enable amd-dbgapi
+ AC_MSG_ERROR([amd-dbgapi is required, but cannot find an appropriate version: $AMD_DBGAPI_PKG_ERRORS])
+ fi
+fi
+
AC_SUBST(TARGET_OBS)
AC_SUBST(HAVE_NATIVE_GCORE_TARGET)
diff --git a/gdb/configure.tgt b/gdb/configure.tgt
index e84e222..d5b7dd1 100644
--- a/gdb/configure.tgt
+++ b/gdb/configure.tgt
@@ -2,13 +2,20 @@
# invoked from the autoconf generated configure script.
# This file sets the following shell variables:
-# gdb_target_obs target-specific object files to use
-# gdb_sim simulator library for target
-# gdb_osabi default OS ABI to use with target
-# gdb_have_gcore set to "true"/"false" if this target can run gcore
+# gdb_target_obs target-specific object files to use
+# gdb_sim simulator library for target
+# gdb_osabi default OS ABI to use with target
+# gdb_have_gcore set to "true"/"false" if this target can run gcore
+# gdb_require_amd_dbgapi set to "true" if this target requires the amd-dbgapi
+# target
# NOTE: Every file added to a gdb_target_obs variable for any target here
-# must also be added to either ALL_TARGET_OBS or ALL_64_TARGET_OBS
+# must also be added to either:
+#
+# - ALL_TARGET_OBS
+# - ALL_64_TARGET_OBS
+# - ALL_AMD_DBGAPI_TARGET_OBS
+#
# in Makefile.in!
case $targ in
@@ -161,6 +168,12 @@ alpha*-*-openbsd*)
alpha-netbsd-tdep.o alpha-obsd-tdep.o netbsd-tdep.o"
;;
+amdgcn*-*-*)
+ # Target: AMDGPU
+ gdb_require_amd_dbgapi=true
+ gdb_target_obs="amdgpu-tdep.o solib-rocm.o"
+ ;;
+
am33_2.0*-*-linux*)
# Target: Matsushita mn10300 (AM33) running Linux
gdb_target_obs="mn10300-tdep.o mn10300-linux-tdep.o linux-tdep.o \
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 03033c7..c90874a 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -7026,6 +7026,8 @@ signal happened. @value{GDBN} alerts you to the context switch with a
message such as @samp{[Switching to Thread @var{n}]} to identify the
thread.
+@anchor{set scheduler-locking}
+
On some OSes, you can modify @value{GDBN}'s default behavior by
locking the OS scheduler to allow only a single thread to run.
@@ -25882,6 +25884,7 @@ all uses of @value{GDBN} with the architecture, both native and cross.
* Nios II::
* Sparc64::
* S12Z::
+* AMD GPU:: @acronym{AMD GPU} architectures
@end menu
@node AArch64
@@ -26370,6 +26373,254 @@ This command displays the current value of the microprocessor's
BDCCSR register.
@end table
+@node AMD GPU
+@subsection @acronym{AMD GPU}
+@cindex @acronym{AMD GPU} support
+
+@value{GDBN} supports debugging programs offloaded to @acronym{AMD GPU} devices
+using the @url{https://docs.amd.com/, @acronym{AMD ROCm}} platform.
+@value{GDBN} presents host threads alongside GPU wavefronts, allowing debugging
+both the host and device parts of the program simultaneously.
+
+@subsubsection @acronym{AMD GPU} Architectures
+
+The list of @acronym{AMD GPU} architectures supported by @value{GDBN} depends
+on the version of the AMD Debugger API library used. See its
+@uref{https://docs.amd.com/bundle/ROCDebugger_User_and_API, documentation} for
+more details.
+
+@subsubsection @acronym{AMD GPU} Device Driver and @acronym{AMD ROCm} Runtime
+
+@value{GDBN} requires a compatible @acronym{AMD GPU} device driver to
+be installed. A warning message is displayed if either the device
+driver version or the version of the debug support it implements is
+unsupported. @value{GDBN} will continue to function except no
+@acronym{AMD GPU} debugging will be possible.
+
+@value{GDBN} requires each agent to have compatible firmware installed
+by the device driver. A warning message is displayed if unsupported
+firmware is detected. @value{GDBN} will continue to function except
+no @acronym{AMD GPU} debugging will be possible on the agent.
+
+@value{GDBN} requires a compatible @acronym{AMD ROCm} runtime to be
+loaded in order to detect @acronym{AMD GPU} code objects and
+wavefronts. A warning message is displayed if an unsupported
+@acronym{AMD ROCm} runtime is detected, or there is an error or
+restriction that prevents debugging. @value{GDBN} will continue to
+function except no @acronym{AMD GPU} debugging will be possible.
+
+@subsubsection @acronym{AMD GPU} Wavefronts
+@cindex wavefronts
+
+An @acronym{AMD GPU} wavefront is represented in @value{GDBN} as a
+thread.
+
+Note that some @acronym{AMD GPU} architectures may have restrictions
+on providing information about @acronym{AMD GPU} wavefronts created
+when @value{GDBN} is not attached (@pxref{AMD GPU Attaching
+Restrictions, , @acronym{AMD GPU} Attaching Restrictions}).
+
+When scheduler-locking is in effect (@pxref{set scheduler-locking}),
+new wavefronts created by the resumed thread (either CPU thread or GPU
+wavefront) are held in the halt state.
+
+@subsubsection @acronym{AMD GPU} Code Objects
+
+The @samp{info sharedlibrary} command will show the @acronym{AMD GPU}
+code objects as file or memory URIs, together with the host's shared
+libraries. For example:
+
+@smallexample
+(@value{GDBP}) info sharedlibrary
+From To Syms Read Shared Object Library
+0x1111 0x2222 Yes (*) /lib64/ld-linux-x86-64.so.2
+...
+0x3333 0x4444 Yes (*) /opt/rocm-4.5.0/.../libamd_comgr.so
+0x5555 0x6666 Yes (*) /lib/x86_64-linux-gnu/libtinfo.so.5
+0x7777 0x8888 Yes file:///tmp/a.out#offset=6477&size=10832
+0x9999 0xaaaa Yes (*) memory://95557/mem#offset=0x1234&size=100
+(*): Shared library is missing debugging information.
+(@value{GDBP})
+@end smallexample
+
+For a @samp{file} URI, the path portion is the file on disk containing
+the code object. The @var{offset} parameter is a 0-based offset in
+this file, to the start of the code object. If omitted, it defaults to
+0. The @var{size} parameter is the size of the code object in bytes.
+If omitted, it defaults to the size of the file.
+
+For a @samp{memory} URI, the path portion is the process id of the
+process owning the memory containing the code object. The @var{offset}
+parameter is the memory address where the code object is found, and
+the @var{size} parameter is its size in bytes.
+
+@acronym{AMD GPU} code objects are loaded into each @acronym{AMD GPU}
+device separately. The @samp{info sharedlibrary} command may
+therefore show the same code object loaded multiple times. As a
+consequence, setting a breakpoint in @acronym{AMD GPU} code will
+result in multiple breakpoint locations if there are multiple
+@acronym{AMD GPU} devices.
+
+@subsubsection @acronym{AMD GPU} Entity Target Identifiers and Convenience Variables
+
+The @acronym{AMD GPU} entities have the following target identifier formats:
+
+@table @asis
+
+@item Thread Target ID
+The @acronym{AMD GPU} thread target identifier (@var{systag}) string has the
+following format:
+
+@smallexample
+AMDGPU Wave @var{agent-id}:@var{queue-id}:@var{dispatch-id}:@var{wave-id} (@var{work-group-x},@var{work-group-y},@var{work-group-z})/@var{work-group-thread-index}
+@end smallexample
+
+@end table
+
+@anchor{AMD GPU Signals}
+@subsubsection @acronym{AMD GPU} Signals
+
+For @acronym{AMD GPU} wavefronts, @value{GDBN} maps target conditions to stop
+signals in the following way:
+
+@table @code
+
+@item SIGILL
+Execution of an illegal instruction.
+
+@item SIGTRAP
+Execution of a @code{S_TRAP} instruction other than:
+
+@itemize @bullet{}
+
+@item
+@code{S_TRAP 1} which is used by @value{GDBN} to insert breakpoints.
+
+@item
+@code{S_TRAP 2} which raises @code{SIGABRT}.
+
+@end itemize
+
+@item SIGABRT
+Execution of a @code{S_TRAP 2} instruction.
+
+@item SIGFPE
+Execution of a floating point or integer instruction detects a
+condition that is enabled to raise a signal. The conditions include:
+
+@itemize @bullet{}
+
+@item
+Floating point operation is invalid.
+
+@item
+Floating point operation had subnormal input that was rounded to zero.
+
+@item
+Floating point operation performed a division by zero.
+
+@item
+Floating point operation produced an overflow result. The result was
+rounded to infinity.
+
+@item
+Floating point operation produced an underflow result. A subnormal
+result was rounded to zero.
+
+@item
+Floating point operation produced an inexact result.
+
+@item
+Integer operation performed a division by zero.
+
+@end itemize
+
+By default, these conditions are not enabled to raise signals. The
+@samp{set $mode} command can be used to change the @acronym{AMD GPU}
+wavefront's register that has bits controlling which conditions are
+enabled to raise signals. The @samp{print $trapsts} command can be
+used to inspect which conditions have been detected even if they are
+not enabled to raise a signal.
+
+@item SIGBUS
+Execution of an instruction that accessed global memory using an
+address that is outside the virtual address range.
+
+@item SIGSEGV
+Execution of an instruction that accessed a global memory page that is
+either not mapped or accessed with incompatible permissions.
+
+@end table
+
+If a single instruction raises more than one signal, they will be
+reported one at a time each time the wavefront is continued.
+
+@subsubsection @acronym{AMD GPU} Logging
+
+The @samp{set debug amd-dbgapi} command can be used
+to enable diagnostic messages in the @samp{amd-dbgapi} target. The
+@samp{show debug amd-dbgapi} command displays the current setting.
+@xref{set debug amd-dbgapi}.
+
+The @samp{set debug amd-dbgapi-lib log-level @var{level}} command can be used
+to enable diagnostic messages from the @samp{amd-dbgapi} library (which
+@value{GDBN} uses under the hood). The @samp{show debug amd-dbgapi-lib
+log-level} command displays the current @samp{amd-dbgapi} library log level.
+@xref{set debug amd-dbgapi-lib}.
+
+@subsubsection @acronym{AMD GPU} Restrictions
+
+@enumerate
+
+@item
+When in non-stop mode, wavefronts may not hit breakpoints inserted
+while not stopped, nor see memory updates made while not stopped,
+until the wavefront is next stopped. Memory updated by non-stopped
+wavefronts may not be visible until the wavefront is next stopped.
+
+@item The HIP runtime performs deferred code object loading by default.
+@acronym{AMD GPU} code objects are not loaded until the first kernel is
+launched. Before then, all breakpoints have to be set as pending breakpoints.
+
+If source line positions are used that only correspond to source lines in
+unloaded code objects, then @value{GDBN} may not set pending breakpoints, and
+instead set breakpoints on the next following source line that maps to host
+code. This can result in unexpected breakpoint hits being reported. When the
+code object containing the source lines is loaded, the incorrect breakpoints
+will be removed and replaced by the correct ones. This problem can be avoided
+by only setting breakpoints in unloaded code objects using symbol or function
+names.
+
+Setting the @code{HIP_ENABLE_DEFERRED_LOADING} environment variable to @code{0}
+can be used to disable deferred code object loading by the HIP runtime. This
+ensures all code objects will be loaded when the inferior reaches the beginning
+of the @code{main} function.
+
+@item
+If no CPU thread is running, then @samp{Ctrl-C} is not able to stop
+@acronym{AMD GPU} threads. This can happen for example if you enable
+@code{scheduler-locking} after the whole program stopped, and then resume an
+@acronym{AMD GPU} thread. The only way to unblock the situation is to kill the
+@value{GDBN} process.
+
+@anchor{AMD GPU Attaching Restrictions}
+@item
+
+By default, for some architectures, the @acronym{AMD GPU} device driver causes
+all @acronym{AMD GPU} wavefronts created when @value{GDBN} is not attached to
+be unable to report the dispatch associated with the wavefront, or the
+wavefront's work-group position. The @samp{info threads} command will display
+this missing information with a @samp{?}.
+
+This does not affect wavefronts created while @value{GDBN} is attached which
+are always capable of reporting this information.
+
+If the @env{HSA_ENABLE_DEBUG} environment variable is set to @samp{1} when the
+@acronym{AMD ROCm} runtime is initialized, then this information will be
+available for all architectures even for wavefronts created when @value{GDBN}
+was not attached.
+
+@end enumerate
@node Controlling GDB
@chapter Controlling @value{GDBN}
@@ -27623,6 +27874,46 @@ module.
@item show debug aix-thread
Show the current state of AIX thread debugging info display.
+@cindex AMD GPU debugging info
+@anchor{set debug amd-dbgapi-lib}
+@item set debug amd-dbgapi-lib
+@itemx show debug amd-dbgapi-lib
+
+The @code{set debug amd-dbgapi-lib log-level @var{level}} command can be used
+to enable diagnostic messages from the @samp{amd-dbgapi} library, where
+@var{level} can be:
+
+@table @code
+
+@item off
+no logging is enabled
+
+@item error
+fatal errors are reported
+
+@item warning
+fatal errors and warnings are reported
+
+@item info
+fatal errors, warnings, and info messages are reported
+
+@item verbose
+all messages are reported
+
+@end table
+
+The @code{show debug amd-dbgapi-lib log-level} command displays the current
+@acronym{amd-dbgapi} library log level.
+
+@anchor{set debug amd-dbgapi}
+@item set debug amd-dbgapi
+@itemx show debug amd-dbgapi
+
+The @samp{set debug amd-dbgapi} command can be used
+to enable diagnostic messages in the @samp{amd-dbgapi} target. The
+@samp{show debug amd-dbgapi} command displays the current setting.
+@xref{set debug amd-dbgapi}.
+
@item set debug check-physname
@cindex physname
Check the results of the ``physname'' computation. When reading DWARF
diff --git a/gdb/regcache.c b/gdb/regcache.c
index 56b6d04..7aee1c1 100644
--- a/gdb/regcache.c
+++ b/gdb/regcache.c
@@ -1915,7 +1915,8 @@ cooked_read_test (struct gdbarch *gdbarch)
{
auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch;
- if (bfd_arch == bfd_arch_frv || bfd_arch == bfd_arch_h8300
+ if (bfd_arch == bfd_arch_amdgcn
+ || bfd_arch == bfd_arch_frv || bfd_arch == bfd_arch_h8300
|| bfd_arch == bfd_arch_m32c || bfd_arch == bfd_arch_sh
|| bfd_arch == bfd_arch_alpha || bfd_arch == bfd_arch_v850
|| bfd_arch == bfd_arch_msp430 || bfd_arch == bfd_arch_mep
diff --git a/gdb/solib-rocm.c b/gdb/solib-rocm.c
new file mode 100644
index 0000000..2b965ac
--- /dev/null
+++ b/gdb/solib-rocm.c
@@ -0,0 +1,679 @@
+/* Handle ROCm Code Objects for GDB, the GNU Debugger.
+
+ Copyright (C) 2019-2022 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include "defs.h"
+
+#include "amd-dbgapi-target.h"
+#include "amdgpu-tdep.h"
+#include "arch-utils.h"
+#include "elf-bfd.h"
+#include "elf/amdgpu.h"
+#include "gdbsupport/fileio.h"
+#include "inferior.h"
+#include "observable.h"
+#include "solib.h"
+#include "solib-svr4.h"
+#include "solist.h"
+#include "symfile.h"
+
+/* ROCm-specific inferior data. */
+
+struct solib_info
+{
+ /* List of code objects loaded into the inferior. */
+ so_list *solib_list;
+};
+
+/* Per-inferior data key. */
+static const registry<inferior>::key<solib_info> rocm_solib_data;
+
+static target_so_ops rocm_solib_ops;
+
+/* Free the solib linked list. */
+
+static void
+rocm_free_solib_list (struct solib_info *info)
+{
+ while (info->solib_list != nullptr)
+ {
+ struct so_list *next = info->solib_list->next;
+
+ free_so (info->solib_list);
+ info->solib_list = next;
+ }
+
+ info->solib_list = nullptr;
+}
+
+
+/* Fetch the solib_info data for INF. */
+
+static struct solib_info *
+get_solib_info (inferior *inf)
+{
+ solib_info *info = rocm_solib_data.get (inf);
+
+ if (info == nullptr)
+ info = rocm_solib_data.emplace (inf);
+
+ return info;
+}
+
+/* Relocate section addresses. */
+
+static void
+rocm_solib_relocate_section_addresses (struct so_list *so,
+ struct target_section *sec)
+{
+ if (!is_amdgpu_arch (gdbarch_from_bfd (so->abfd)))
+ {
+ svr4_so_ops.relocate_section_addresses (so, sec);
+ return;
+ }
+
+ lm_info_svr4 *li = (lm_info_svr4 *) so->lm_info;
+ sec->addr = sec->addr + li->l_addr;
+ sec->endaddr = sec->endaddr + li->l_addr;
+}
+
+static void rocm_update_solib_list ();
+
+static void
+rocm_solib_handle_event ()
+{
+ /* Since we sit on top of svr4_so_ops, we might get called following an event
+ concerning host libraries. We must therefore forward the call. If the
+ event was for a ROCm code object, it will be a no-op. On the other hand,
+ if the event was for host libraries, rocm_update_solib_list will be
+ essentially be a no-op (it will reload the same code object list as was
+ previously loaded). */
+ svr4_so_ops.handle_event ();
+
+ rocm_update_solib_list ();
+}
+
+/* Make a deep copy of the solib linked list. */
+
+static so_list *
+rocm_solib_copy_list (const so_list *src)
+{
+ struct so_list *dst = nullptr;
+ struct so_list **link = &dst;
+
+ while (src != nullptr)
+ {
+ struct so_list *newobj;
+
+ newobj = XNEW (struct so_list);
+ memcpy (newobj, src, sizeof (struct so_list));
+
+ lm_info_svr4 *src_li = (lm_info_svr4 *) src->lm_info;
+ newobj->lm_info = new lm_info_svr4 (*src_li);
+
+ newobj->next = nullptr;
+ *link = newobj;
+ link = &newobj->next;
+
+ src = src->next;
+ }
+
+ return dst;
+}
+
+/* Build a list of `struct so_list' objects describing the shared
+ objects currently loaded in the inferior. */
+
+static struct so_list *
+rocm_solib_current_sos ()
+{
+ /* First, retrieve the host-side shared library list. */
+ so_list *head = svr4_so_ops.current_sos ();
+
+ /* Then, the device-side shared library list. */
+ so_list *list = get_solib_info (current_inferior ())->solib_list;
+
+ if (list == nullptr)
+ return head;
+
+ list = rocm_solib_copy_list (list);
+
+ if (head == nullptr)
+ return list;
+
+ /* Append our libraries to the end of the list. */
+ so_list *tail;
+ for (tail = head; tail->next; tail = tail->next)
+ /* Nothing. */;
+ tail->next = list;
+
+ return head;
+}
+
+namespace {
+
+/* Interface to interact with a ROCm code object stream. */
+
+struct rocm_code_object_stream
+{
+ DISABLE_COPY_AND_ASSIGN (rocm_code_object_stream);
+
+ /* Copy SIZE bytes from the underlying objfile storage starting at OFFSET
+ into the user provided buffer BUF.
+
+ Return the number of bytes actually copied (might be inferior to SIZE if
+ the end of the stream is reached). */
+ virtual file_ptr read (void *buf, file_ptr size, file_ptr offset) = 0;
+
+ /* Retrieve file information in SB.
+
+ Return 0 on success. On failure, set the appropriate bfd error number
+ (using bfd_set_error) and return -1. */
+ int stat (struct stat *sb);
+
+ virtual ~rocm_code_object_stream () = default;
+
+protected:
+ rocm_code_object_stream () = default;
+
+ /* Return the size of the object file, or -1 if the size cannot be
+ determined.
+
+ This is a helper function for stat. */
+ virtual LONGEST size () = 0;
+};
+
+int
+rocm_code_object_stream::stat (struct stat *sb)
+{
+ const LONGEST size = this->size ();
+ if (size == -1)
+ return -1;
+
+ memset (sb, '\0', sizeof (struct stat));
+ sb->st_size = size;
+ return 0;
+}
+
+/* Interface to a ROCm object stream which is embedded in an ELF file
+ accessible to the debugger. */
+
+struct rocm_code_object_stream_file final : rocm_code_object_stream
+{
+ DISABLE_COPY_AND_ASSIGN (rocm_code_object_stream_file);
+
+ rocm_code_object_stream_file (int fd, ULONGEST offset, ULONGEST size);
+
+ file_ptr read (void *buf, file_ptr size, file_ptr offset) override;
+
+ LONGEST size () override;
+
+ ~rocm_code_object_stream_file () override;
+
+protected:
+
+ /* The target file descriptor for this stream. */
+ int m_fd;
+
+ /* The offset of the ELF file image in the target file. */
+ ULONGEST m_offset;
+
+ /* The size of the ELF file image. The value 0 means that it was
+ unspecified in the URI descriptor. */
+ ULONGEST m_size;
+};
+
+rocm_code_object_stream_file::rocm_code_object_stream_file
+ (int fd, ULONGEST offset, ULONGEST size)
+ : m_fd (fd), m_offset (offset), m_size (size)
+{
+}
+
+file_ptr
+rocm_code_object_stream_file::read (void *buf, file_ptr size,
+ file_ptr offset)
+{
+ fileio_error target_errno;
+ file_ptr nbytes = 0;
+ while (size > 0)
+ {
+ QUIT;
+
+ file_ptr bytes_read
+ = target_fileio_pread (m_fd, static_cast<gdb_byte *> (buf) + nbytes,
+ size, m_offset + offset + nbytes,
+ &target_errno);
+
+ if (bytes_read == 0)
+ break;
+
+ if (bytes_read < 0)
+ {
+ errno = fileio_error_to_host (target_errno);
+ bfd_set_error (bfd_error_system_call);
+ return -1;
+ }
+
+ nbytes += bytes_read;
+ size -= bytes_read;
+ }
+
+ return nbytes;
+}
+
+LONGEST
+rocm_code_object_stream_file::size ()
+{
+ if (m_size == 0)
+ {
+ fileio_error target_errno;
+ struct stat stat;
+ if (target_fileio_fstat (m_fd, &stat, &target_errno) < 0)
+ {
+ errno = fileio_error_to_host (target_errno);
+ bfd_set_error (bfd_error_system_call);
+ return -1;
+ }
+
+ /* Check that the offset is valid. */
+ if (m_offset >= stat.st_size)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return -1;
+ }
+
+ m_size = stat.st_size - m_offset;
+ }
+
+ return m_size;
+}
+
+rocm_code_object_stream_file::~rocm_code_object_stream_file ()
+{
+ fileio_error target_errno;
+ target_fileio_close (m_fd, &target_errno);
+}
+
+/* Interface to a code object which lives in the inferior's memory. */
+
+struct rocm_code_object_stream_memory final : public rocm_code_object_stream
+{
+ DISABLE_COPY_AND_ASSIGN (rocm_code_object_stream_memory);
+
+ rocm_code_object_stream_memory (gdb::byte_vector buffer);
+
+ file_ptr read (void *buf, file_ptr size, file_ptr offset) override;
+
+protected:
+
+ /* Snapshot of the original ELF image taken during load. This is done to
+ support the situation where an inferior uses an in-memory image, and
+ releases or re-uses this memory before GDB is done using it. */
+ gdb::byte_vector m_objfile_image;
+
+ LONGEST size () override
+ {
+ return m_objfile_image.size ();
+ }
+};
+
+rocm_code_object_stream_memory::rocm_code_object_stream_memory
+ (gdb::byte_vector buffer)
+ : m_objfile_image (std::move (buffer))
+{
+}
+
+file_ptr
+rocm_code_object_stream_memory::read (void *buf, file_ptr size,
+ file_ptr offset)
+{
+ if (size > m_objfile_image.size () - offset)
+ size = m_objfile_image.size () - offset;
+
+ memcpy (buf, m_objfile_image.data () + offset, size);
+ return size;
+}
+
+} /* anonymous namespace */
+
+static void *
+rocm_bfd_iovec_open (bfd *abfd, void *inferior_void)
+{
+ gdb::string_view uri (bfd_get_filename (abfd));
+ gdb::string_view protocol_delim = "://";
+ size_t protocol_end = uri.find (protocol_delim);
+ std::string protocol = gdb::to_string (uri.substr (0, protocol_end));
+ protocol_end += protocol_delim.length ();
+
+ std::transform (protocol.begin (), protocol.end (), protocol.begin (),
+ [] (unsigned char c) { return std::tolower (c); });
+
+ gdb::string_view path;
+ size_t path_end = uri.find_first_of ("#?", protocol_end);
+ if (path_end != std::string::npos)
+ path = uri.substr (protocol_end, path_end++ - protocol_end);
+ else
+ path = uri.substr (protocol_end);
+
+ /* %-decode the string. */
+ std::string decoded_path;
+ decoded_path.reserve (path.length ());
+ for (size_t i = 0; i < path.length (); ++i)
+ if (path[i] == '%'
+ && i < path.length () - 2
+ && std::isxdigit (path[i + 1])
+ && std::isxdigit (path[i + 2]))
+ {
+ gdb::string_view hex_digits = path.substr (i + 1, 2);
+ decoded_path += std::stoi (gdb::to_string (hex_digits), 0, 16);
+ i += 2;
+ }
+ else
+ decoded_path += path[i];
+
+ /* Tokenize the query/fragment. */
+ std::vector<gdb::string_view> tokens;
+ size_t pos, last = path_end;
+ while ((pos = uri.find ('&', last)) != std::string::npos)
+ {
+ tokens.emplace_back (uri.substr (last, pos - last));
+ last = pos + 1;
+ }
+
+ if (last != std::string::npos)
+ tokens.emplace_back (uri.substr (last));
+
+ /* Create a tag-value map from the tokenized query/fragment. */
+ std::unordered_map<gdb::string_view, gdb::string_view,
+ gdb::string_view_hash> params;
+ for (gdb::string_view token : tokens)
+ {
+ size_t delim = token.find ('=');
+ if (delim != std::string::npos)
+ {
+ gdb::string_view tag = token.substr (0, delim);
+ gdb::string_view val = token.substr (delim + 1);
+ params.emplace (tag, val);
+ }
+ }
+
+ try
+ {
+ ULONGEST offset = 0;
+ ULONGEST size = 0;
+ inferior *inferior = static_cast<struct inferior *> (inferior_void);
+
+ auto try_strtoulst = [] (gdb::string_view v)
+ {
+ errno = 0;
+ ULONGEST value = strtoulst (v.data (), nullptr, 0);
+ if (errno != 0)
+ {
+ /* The actual message doesn't matter, the exception is caught
+ below, transformed in a BFD error, and the message is lost. */
+ error (_("Failed to parse integer."));
+ }
+
+ return value;
+ };
+
+ auto offset_it = params.find ("offset");
+ if (offset_it != params.end ())
+ offset = try_strtoulst (offset_it->second);
+
+ auto size_it = params.find ("size");
+ if (size_it != params.end ())
+ {
+ size = try_strtoulst (size_it->second);
+ if (size == 0)
+ error (_("Invalid size value"));
+ }
+
+ if (protocol == "file")
+ {
+ fileio_error target_errno;
+ int fd
+ = target_fileio_open (static_cast<struct inferior *> (inferior),
+ decoded_path.c_str (), FILEIO_O_RDONLY,
+ false, 0, &target_errno);
+
+ if (fd == -1)
+ {
+ errno = fileio_error_to_host (target_errno);
+ bfd_set_error (bfd_error_system_call);
+ return nullptr;
+ }
+
+ return new rocm_code_object_stream_file (fd, offset, size);
+ }
+
+ if (protocol == "memory")
+ {
+ ULONGEST pid = try_strtoulst (path);
+ if (pid != inferior->pid)
+ {
+ warning (_("`%s': code object is from another inferior"),
+ gdb::to_string (uri).c_str ());
+ bfd_set_error (bfd_error_bad_value);
+ return nullptr;
+ }
+
+ gdb::byte_vector buffer (size);
+ if (target_read_memory (offset, buffer.data (), size) != 0)
+ {
+ warning (_("Failed to copy the code object from the inferior"));
+ bfd_set_error (bfd_error_bad_value);
+ return nullptr;
+ }
+
+ return new rocm_code_object_stream_memory (std::move (buffer));
+ }
+
+ warning (_("`%s': protocol not supported: %s"),
+ gdb::to_string (uri).c_str (), protocol.c_str ());
+ bfd_set_error (bfd_error_bad_value);
+ return nullptr;
+ }
+ catch (const gdb_exception_quit &ex)
+ {
+ set_quit_flag ();
+ bfd_set_error (bfd_error_bad_value);
+ return nullptr;
+ }
+ catch (const gdb_exception &ex)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return nullptr;
+ }
+}
+
+static int
+rocm_bfd_iovec_close (bfd *nbfd, void *data)
+{
+ delete static_cast<rocm_code_object_stream *> (data);
+
+ return 0;
+}
+
+static file_ptr
+rocm_bfd_iovec_pread (bfd *abfd, void *data, void *buf, file_ptr size,
+ file_ptr offset)
+{
+ return static_cast<rocm_code_object_stream *> (data)->read (buf, size,
+ offset);
+}
+
+static int
+rocm_bfd_iovec_stat (bfd *abfd, void *data, struct stat *sb)
+{
+ return static_cast<rocm_code_object_stream *> (data)->stat (sb);
+}
+
+static gdb_bfd_ref_ptr
+rocm_solib_bfd_open (const char *pathname)
+{
+ /* Handle regular files with SVR4 open. */
+ if (strstr (pathname, "://") == nullptr)
+ return svr4_so_ops.bfd_open (pathname);
+
+ gdb_bfd_ref_ptr abfd
+ = gdb_bfd_openr_iovec (pathname, "elf64-amdgcn", rocm_bfd_iovec_open,
+ current_inferior (), rocm_bfd_iovec_pread,
+ rocm_bfd_iovec_close, rocm_bfd_iovec_stat);
+
+ if (abfd == nullptr)
+ error (_("Could not open `%s' as an executable file: %s"), pathname,
+ bfd_errmsg (bfd_get_error ()));
+
+ /* Check bfd format. */
+ if (!bfd_check_format (abfd.get (), bfd_object))
+ error (_("`%s': not in executable format: %s"),
+ bfd_get_filename (abfd.get ()), bfd_errmsg (bfd_get_error ()));
+
+ unsigned char osabi = elf_elfheader (abfd)->e_ident[EI_OSABI];
+ unsigned char osabiversion = elf_elfheader (abfd)->e_ident[EI_ABIVERSION];
+
+ /* Check that the code object is using the HSA OS ABI. */
+ if (osabi != ELFOSABI_AMDGPU_HSA)
+ error (_("`%s': ELF file OS ABI is not supported (%d)."),
+ bfd_get_filename (abfd.get ()), osabi);
+
+ /* We support HSA code objects V3 and greater. */
+ if (osabiversion < ELFABIVERSION_AMDGPU_HSA_V3)
+ error (_("`%s': ELF file HSA OS ABI version is not supported (%d)."),
+ bfd_get_filename (abfd.get ()), osabiversion);
+
+ return abfd;
+}
+
+static void
+rocm_solib_create_inferior_hook (int from_tty)
+{
+ rocm_free_solib_list (get_solib_info (current_inferior ()));
+
+ svr4_so_ops.solib_create_inferior_hook (from_tty);
+}
+
+static void
+rocm_update_solib_list ()
+{
+ inferior *inf = current_inferior ();
+
+ amd_dbgapi_process_id_t process_id = get_amd_dbgapi_process_id (inf);
+ if (process_id.handle == AMD_DBGAPI_PROCESS_NONE.handle)
+ return;
+
+ solib_info *info = get_solib_info (inf);
+
+ rocm_free_solib_list (info);
+ struct so_list **link = &info->solib_list;
+
+ amd_dbgapi_code_object_id_t *code_object_list;
+ size_t count;
+
+ amd_dbgapi_status_t status
+ = amd_dbgapi_process_code_object_list (process_id, &count,
+ &code_object_list, nullptr);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ {
+ warning (_("amd_dbgapi_process_code_object_list failed (%s)"),
+ get_status_string (status));
+ return;
+ }
+
+ for (size_t i = 0; i < count; ++i)
+ {
+ CORE_ADDR l_addr;
+ char *uri_bytes;
+
+ status = amd_dbgapi_code_object_get_info
+ (code_object_list[i], AMD_DBGAPI_CODE_OBJECT_INFO_LOAD_ADDRESS,
+ sizeof (l_addr), &l_addr);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ continue;
+
+ status = amd_dbgapi_code_object_get_info
+ (code_object_list[i], AMD_DBGAPI_CODE_OBJECT_INFO_URI_NAME,
+ sizeof (uri_bytes), &uri_bytes);
+ if (status != AMD_DBGAPI_STATUS_SUCCESS)
+ continue;
+
+ struct so_list *so = XCNEW (struct so_list);
+ lm_info_svr4 *li = new lm_info_svr4;
+ li->l_addr = l_addr;
+ so->lm_info = li;
+
+ strncpy (so->so_name, uri_bytes, sizeof (so->so_name));
+ so->so_name[sizeof (so->so_name) - 1] = '\0';
+ xfree (uri_bytes);
+
+ /* Make so_original_name unique so that code objects with the same URI
+ but different load addresses are seen by gdb core as different shared
+ objects. */
+ xsnprintf (so->so_original_name, sizeof (so->so_original_name),
+ "code_object_%ld", code_object_list[i].handle);
+
+ so->next = nullptr;
+ *link = so;
+ link = &so->next;
+ }
+
+ xfree (code_object_list);
+
+ if (rocm_solib_ops.current_sos == NULL)
+ {
+ /* Override what we need to. */
+ rocm_solib_ops = svr4_so_ops;
+ rocm_solib_ops.current_sos = rocm_solib_current_sos;
+ rocm_solib_ops.solib_create_inferior_hook
+ = rocm_solib_create_inferior_hook;
+ rocm_solib_ops.bfd_open = rocm_solib_bfd_open;
+ rocm_solib_ops.relocate_section_addresses
+ = rocm_solib_relocate_section_addresses;
+ rocm_solib_ops.handle_event = rocm_solib_handle_event;
+
+ /* Engage the ROCm so_ops. */
+ set_gdbarch_so_ops (current_inferior ()->gdbarch, &rocm_solib_ops);
+ }
+}
+
+static void
+rocm_solib_target_inferior_created (inferior *inf)
+{
+ rocm_free_solib_list (get_solib_info (inf));
+ rocm_update_solib_list ();
+
+ /* Force GDB to reload the solibs. */
+ current_inferior ()->pspace->clear_solib_cache ();
+ solib_add (nullptr, 0, auto_solib_add);
+}
+
+/* -Wmissing-prototypes */
+extern initialize_file_ftype _initialize_rocm_solib;
+
+void
+_initialize_rocm_solib ()
+{
+ /* The dependency on the amd-dbgapi exists because solib-rocm's
+ inferior_created observer needs amd-dbgapi to have attached the process,
+ which happens in amd_dbgapi_target's inferior_created observer. */
+ gdb::observers::inferior_created.attach
+ (rocm_solib_target_inferior_created,
+ "solib-rocm",
+ { &get_amd_dbgapi_target_inferior_created_observer_token () });
+}
diff --git a/gdb/testsuite/gdb.rocm/simple.cpp b/gdb/testsuite/gdb.rocm/simple.cpp
new file mode 100644
index 0000000..31dc56a
--- /dev/null
+++ b/gdb/testsuite/gdb.rocm/simple.cpp
@@ -0,0 +1,48 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2022 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include "hip/hip_runtime.h"
+#include <cassert>
+
+__global__ void
+do_an_addition (int a, int b, int *out)
+{
+ *out = a + b;
+}
+
+int
+main ()
+{
+ int *result_ptr, result;
+
+ /* Allocate memory for the device to write the result to. */
+ hipError_t error = hipMalloc (&result_ptr, sizeof (int));
+ assert (error == hipSuccess);
+
+ /* Run `do_an_addition` on one workgroup containing one work item. */
+ do_an_addition<<<dim3(1), dim3(1), 0, 0>>> (1, 2, result_ptr);
+
+ /* Copy result from device to host. Note that this acts as a synchronization
+ point, waiting for the kernel dispatch to complete. */
+ error = hipMemcpyDtoH (&result, result_ptr, sizeof (int));
+ assert (error == hipSuccess);
+
+ printf ("result is %d\n", result);
+ assert (result == 3);
+
+ return 0;
+}
diff --git a/gdb/testsuite/gdb.rocm/simple.exp b/gdb/testsuite/gdb.rocm/simple.exp
new file mode 100644
index 0000000..f84df71
--- /dev/null
+++ b/gdb/testsuite/gdb.rocm/simple.exp
@@ -0,0 +1,52 @@
+# Copyright 2022 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# A simple AMD GPU debugging smoke test. Run to a breakpoint in device code,
+# then continue until the end of the program.
+
+load_lib rocm.exp
+
+standard_testfile .cpp
+
+if [skip_hipcc_tests] {
+ verbose "skipping hip test: ${testfile}"
+ return
+}
+
+if {[build_executable "failed to prepare" $testfile $srcfile {debug hip}]} {
+ return
+}
+
+proc do_test {} {
+ clean_restart $::binfile
+
+ with_rocm_gpu_lock {
+ if ![runto_main] {
+ return
+ }
+
+ gdb_test "with breakpoint pending on -- break do_an_addition" \
+ "Breakpoint $::decimal \\(do_an_addition\\) pending."
+
+ gdb_test "continue" \
+ "Thread $::decimal hit Breakpoint $::decimal, do_an_addition .*"
+
+ gdb_test "continue" \
+ "Inferior 1 .* exited normally.*" \
+ "continue to end"
+ }
+}
+
+do_test
diff --git a/gdb/testsuite/lib/future.exp b/gdb/testsuite/lib/future.exp
index 1c3ea65..5720d38 100644
--- a/gdb/testsuite/lib/future.exp
+++ b/gdb/testsuite/lib/future.exp
@@ -121,6 +121,19 @@ proc gdb_find_rustc {} {
return $rustc
}
+proc gdb_find_hipcc {} {
+ global tool_root_dir
+ if {![is_remote host]} {
+ set hipcc [lookfor_file $tool_root_dir hipcc]
+ if {$hipcc == ""} {
+ set hipcc [lookfor_file /opt/rocm/bin hipcc]
+ }
+ } else {
+ set hipcc ""
+ }
+ return $hipcc
+}
+
proc gdb_find_ldd {} {
global LDD_FOR_TARGET
if [info exists LDD_FOR_TARGET] {
@@ -290,6 +303,18 @@ proc gdb_default_target_compile_1 {source destfile type options} {
}
}
+ if { $i == "hip" } {
+ set compiler_type "hip"
+ if {[board_info $dest exists hipflags]} {
+ append add_flags " [target_info hipflags]"
+ }
+ if {[board_info $dest exists hipcompiler]} {
+ set compiler [target_info hipcompiler]
+ } else {
+ set compiler [find_hipcc]
+ }
+ }
+
if {[regexp "^dest=" $i]} {
regsub "^dest=" $i "" tmp
if {[board_info $tmp exists name]} {
@@ -352,6 +377,7 @@ proc gdb_default_target_compile_1 {source destfile type options} {
global GO_FOR_TARGET
global GO_LD_FOR_TARGET
global RUSTC_FOR_TARGET
+ global HIPCC_FOR_TARGET
if {[info exists GNATMAKE_FOR_TARGET]} {
if { $compiler_type == "ada" } {
@@ -398,6 +424,12 @@ proc gdb_default_target_compile_1 {source destfile type options} {
}
}
+ if {[info exists HIPCC_FOR_TARGET]} {
+ if {$compiler_type == "hip"} {
+ set compiler $HIPCC_FOR_TARGET
+ }
+ }
+
if { $type == "executable" && $linker != "" } {
set compiler $linker
}
@@ -687,6 +719,12 @@ if {[info procs find_rustc] == ""} {
gdb_note [join [list $note_prefix "Rust" $note_suffix] ""]
}
+if {[info procs find_hipcc] == ""} {
+ rename gdb_find_hipcc find_hipcc
+ set use_gdb_compile(hip) 1
+ gdb_note [join [list $note_prefix "HIP" $note_suffix] ""]
+}
+
# If dejagnu's default_target_compile is missing support for any language,
# override it.
if { [array size use_gdb_compile] != 0 } {
diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index fe3a2c0..faa0ac0 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -4867,6 +4867,13 @@ proc gdb_compile {source dest type options} {
lappend new_options "early_flags=-fno-stack-protector"
}
+ # hipcc defaults to -O2, so add -O0 to early flags for the hip language.
+ # If "optimize" is also requested, another -O flag (e.g. -O2) will be added
+ # to the flags, overriding this -O0.
+ if {[lsearch -exact $options hip] != -1} {
+ lappend new_options "early_flags=-O0"
+ }
+
# Because we link with libraries using their basename, we may need
# (depending on the platform) to set a special rpath value, to allow
# the executable to find the libraries it depends on.
diff --git a/gdb/testsuite/lib/rocm.exp b/gdb/testsuite/lib/rocm.exp
new file mode 100644
index 0000000..e22f392
--- /dev/null
+++ b/gdb/testsuite/lib/rocm.exp
@@ -0,0 +1,94 @@
+# Copyright (C) 2019-2022 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+# Support library for testing ROCm (AMD GPU) GDB features.
+
+proc skip_hipcc_tests { } {
+ # Only the native target supports ROCm debugging. E.g., when
+ # testing against GDBserver, there's no point in running the ROCm
+ # tests.
+ if {[target_info gdb_protocol] != ""} {
+ return 1
+ }
+ return 0
+}
+
+# The lock file used to ensure that only one GDB has access to the GPU
+# at a time.
+set gpu_lock_filename $objdir/gpu-parallel.lock
+
+# Acquire lock file LOCKFILE. Tries forever until the lock file is
+# successfully created.
+
+proc lock_file_acquire {lockfile} {
+ verbose -log "acquiring lock file: $::subdir/${::gdb_test_file_name}.exp"
+ while {true} {
+ if {![catch {open $lockfile {WRONLY CREAT EXCL}} rc]} {
+ set msg "locked by $::subdir/${::gdb_test_file_name}.exp"
+ verbose -log "lock file: $msg"
+ # For debugging, put info in the lockfile about who owns
+ # it.
+ puts $rc $msg
+ flush $rc
+ return [list $rc $lockfile]
+ }
+ after 10
+ }
+}
+
+# Release a lock file.
+
+proc lock_file_release {info} {
+ verbose -log "releasing lock file: $::subdir/${::gdb_test_file_name}.exp"
+
+ if {![catch {fconfigure [lindex $info 0]}]} {
+ if {![catch {
+ close [lindex $info 0]
+ file delete -force [lindex $info 1]
+ } rc]} {
+ return ""
+ } else {
+ return -code error "Error releasing lockfile: '$rc'"
+ }
+ } else {
+ error "invalid lock"
+ }
+}
+
+# Run body under the GPU lock. Also calls gdb_exit before releasing
+# the GPU lock.
+
+proc with_rocm_gpu_lock { body } {
+ if {[info exists ::GDB_PARALLEL]} {
+ set lock_rc [lock_file_acquire $::gpu_lock_filename]
+ }
+
+ set code [catch {uplevel 1 $body} result]
+
+ # In case BODY returned early due to some testcase failing, and
+ # left GDB running, debugging the GPU.
+ gdb_exit
+
+ if {[info exists ::GDB_PARALLEL]} {
+ lock_file_release $lock_rc
+ }
+
+ if {$code == 1} {
+ global errorInfo errorCode
+ return -code $code -errorinfo $errorInfo -errorcode $errorCode $result
+ } else {
+ return -code $code $result
+ }
+}
generated by cgit v1.1 at 2024-10-13 12:10:42 +0000