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Diffstat (limited to 'gdb/hpux-thread.c')
| -rw-r--r-- | gdb/hpux-thread.c | 574 |
1 files changed, 0 insertions, 574 deletions
diff --git a/gdb/hpux-thread.c b/gdb/hpux-thread.c deleted file mode 100644 index a747ab5..0000000 --- a/gdb/hpux-thread.c +++ /dev/null @@ -1,574 +0,0 @@ -/* Low level interface for debugging HPUX/DCE threads for GDB, the GNU - debugger. - - Copyright (C) 1996, 1998, 1999, 2000, 2001, 2004, 2007, 2008, 2009, 2010, - 2011 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/>. */ - -/* This module implements a sort of half target that sits between the - machine-independent parts of GDB and the ptrace interface (infptrace.c) to - provide access to the HPUX user-mode thread implementation. - - HPUX threads are true user-mode threads, which are invoked via the cma_* - and pthread_* (DCE and Posix respectively) interfaces. These are mostly - implemented in user-space, with all thread context kept in various - structures that live in the user's heap. For the most part, the kernel has - no knowlege of these threads. */ - -#include "defs.h" - -#define _CMA_NOWRAPPERS_ - -#include <cma_tcb_defs.h> -#include <cma_deb_core.h> -#include "gdbthread.h" -#include "target.h" -#include "inferior.h" -#include "regcache.h" -#include <fcntl.h> -#include <string.h> -#include "gdb_stat.h" -#include "gdbcore.h" -#include "hppa-tdep.h" -#include "observer.h" - -extern int child_suppress_run; - -extern void _initialize_hpux_thread (void); - -struct string_map - { - int num; - char *str; - }; - -static int hpux_thread_active = 0; - -static ptid_t main_ptid; /* Real process ID */ - -static CORE_ADDR P_cma__g_known_threads; -static CORE_ADDR P_cma__g_current_thread; - -static void init_hpux_thread_ops (void); - -static struct target_ops hpux_thread_ops; - -static ptid_t find_active_thread (void); - -static int cached_thread; -static cma__t_int_tcb cached_tcb; - -static ptid_t -find_active_thread (void) -{ - static cma__t_int_tcb tcb; - CORE_ADDR tcb_ptr; - - read_memory ((CORE_ADDR) P_cma__g_current_thread, - (char *) &tcb_ptr, - sizeof tcb_ptr); - - read_memory (tcb_ptr, (char *) &tcb, sizeof tcb); - - return (ptid_build (PIDGET (main_ptid), 0, - cma_thread_get_unique (&tcb.prolog.client_thread))); -} - -static cma__t_int_tcb *find_tcb (ptid_t ptid); - -static cma__t_int_tcb * -find_tcb (ptid_t ptid) -{ - cma__t_known_object queue_header; - cma__t_queue *queue_ptr; - int thread = ptid_get_tid (ptid); - - if (thread == cached_thread) - return &cached_tcb; - - read_memory ((CORE_ADDR) P_cma__g_known_threads, - (char *) &queue_header, - sizeof queue_header); - - for (queue_ptr = queue_header.queue.flink; - queue_ptr != (cma__t_queue *) P_cma__g_known_threads; - queue_ptr = cached_tcb.threads.flink) - { - cma__t_int_tcb *tcb_ptr; - - tcb_ptr = cma__base (queue_ptr, threads, cma__t_int_tcb); - - read_memory ((CORE_ADDR) tcb_ptr, (char *) &cached_tcb, - sizeof cached_tcb); - - if (cached_tcb.header.type == cma__c_obj_tcb) - if (cma_thread_get_unique (&cached_tcb.prolog.client_thread) == thread) - { - cached_thread = thread; - return &cached_tcb; - } - } - - error (_("Can't find TCB %d"), thread); - return NULL; -} - -/* Most target vector functions from here on actually just pass through to - inftarg.c, as they don't need to do anything specific for threads. */ - -static void -hpux_thread_open (char *arg, int from_tty) -{ - deprecated_child_ops.to_open (arg, from_tty); -} - -/* Attach to process PID, then initialize for debugging it - and wait for the trace-trap that results from attaching. */ - -static void -hpux_thread_attach (struct target_ops *ops, char *args, int from_tty) -{ - deprecated_child_ops.to_attach (&deprecated_child_ops, args, from_tty); - - /* XXX - might want to iterate over all the threads and register them. */ -} - -/* Take a program previously attached to and detaches it. - The program resumes execution and will no longer stop - on signals, etc. We'd better not have left any breakpoints - in the program or it'll die when it hits one. For this - to work, it may be necessary for the process to have been - previously attached. It *might* work if the program was - started via the normal ptrace (PTRACE_TRACEME). */ - -static void -hpux_thread_detach (struct target_ops *ops, char *args, int from_tty) -{ - deprecated_child_ops.to_detach (&deprecated_child_ops, args, from_tty); -} - -/* Resume execution of process PID. If STEP is nozero, then - just single step it. If SIGNAL is nonzero, restart it with that - signal activated. We may have to convert pid from a thread-id to an LWP id - for procfs. */ - -static void -hpux_thread_resume (struct target_ops *ops, - ptid_t ptid, int step, enum target_signal signo) -{ - struct cleanup *old_chain; - - old_chain = save_inferior_ptid (); - - ptid = main_ptid; - inferior_ptid = main_ptid; - - deprecated_child_ops.to_resume (&deprecated_child_ops, ptid, step, signo); - - cached_thread = 0; - - do_cleanups (old_chain); -} - -/* Wait for any threads to stop. We may have to convert PID from a thread id - to a LWP id, and vice versa on the way out. */ - -static ptid_t -hpux_thread_wait (struct target_ops *ops, ptid_t ptid, - struct target_waitstatus *ourstatus, int options) -{ - ptid_t rtnval; - struct cleanup *old_chain; - - old_chain = save_inferior_ptid (); - - inferior_ptid = main_ptid; - - if (!ptid_equal (ptid, minus_one_ptid)) - ptid = main_ptid; - - rtnval = deprecated_child_ops.to_wait (&deprecated_child_ops, - ptid, ourstatus, options); - - rtnval = find_active_thread (); - - do_cleanups (old_chain); - - return rtnval; -} - -static char regmap[] = -{ - -2, -1, -1, 0, 4, 8, 12, 16, 20, 24, /* flags, r1 -> r9 */ - 28, 32, 36, 40, 44, 48, 52, 56, 60, -1, /* r10 -> r19 */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* r20 -> r29 */ - - /* r30, r31, sar, pcoqh, pcsqh, pcoqt, pcsqt, eiem, iir, isr */ - -2, -1, -1, -2, -1, -1, -1, -1, -1, -1, - - /* ior, ipsw, goto, sr4, sr0, sr1, sr2, sr3, sr5, sr6 */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - - /* sr7, cr0, cr8, cr9, ccr, cr12, cr13, cr24, cr25, cr26 */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - - -1, -1, -1, -1, /* mpsfu_high, mpsfu_low, mpsfu_ovflo, pad */ - 144, -1, -1, -1, -1, -1, -1, -1, /* fpsr, fpe1 -> fpe7 */ - -1, -1, -1, -1, -1, -1, -1, -1, /* fr4 -> fr7 */ - -1, -1, -1, -1, -1, -1, -1, -1, /* fr8 -> fr11 */ - 136, -1, 128, -1, 120, -1, 112, -1, /* fr12 -> fr15 */ - 104, -1, 96, -1, 88, -1, 80, -1, /* fr16 -> fr19 */ - 72, -1, 64, -1, -1, -1, -1, -1, /* fr20 -> fr23 */ - -1, -1, -1, -1, -1, -1, -1, -1, /* fr24 -> fr27 */ - -1, -1, -1, -1, -1, -1, -1, -1, /* fr28 -> fr31 */ -}; - -static void -hpux_thread_fetch_registers (struct target_ops *ops, - struct regcache *regcache, int regno) -{ - struct gdbarch *gdbarch = get_regcache_arch (regcache); - enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); - cma__t_int_tcb tcb, *tcb_ptr; - struct cleanup *old_chain; - int i; - int first_regno, last_regno; - - tcb_ptr = find_tcb (inferior_ptid); - - old_chain = save_inferior_ptid (); - - inferior_ptid = main_ptid; - - if (tcb_ptr->state == cma__c_state_running) - { - deprecated_child_ops.to_fetch_registers (&deprecated_child_ops, - regcache, regno); - - do_cleanups (old_chain); - - return; - } - - if (regno == -1) - { - first_regno = 0; - last_regno = gdbarch_num_regs (gdbarch) - 1; - } - else - { - first_regno = regno; - last_regno = regno; - } - - for (regno = first_regno; regno <= last_regno; regno++) - { - if (regmap[regno] == -1) - deprecated_child_ops.to_fetch_registers (&deprecated_child_ops, - regcache, regno); - else - { - unsigned char buf[MAX_REGISTER_SIZE]; - CORE_ADDR sp; - - sp = (CORE_ADDR) tcb_ptr->static_ctx.sp - 160; - - if (regno == HPPA_FLAGS_REGNUM) - /* Flags must be 0 to avoid bogus value for SS_INSYSCALL. */ - memset (buf, '\000', register_size (gdbarch, regno)); - else if (regno == HPPA_SP_REGNUM) - store_unsigned_integer (buf, sizeof sp, byte_order, sp); - else if (regno == HPPA_PCOQ_HEAD_REGNUM) - read_memory (sp - 20, buf, register_size (gdbarch, regno)); - else - read_memory (sp + regmap[regno], buf, - register_size (gdbarch, regno)); - - regcache_raw_supply (regcache, regno, buf); - } - } - - do_cleanups (old_chain); -} - -static void -hpux_thread_store_registers (struct target_ops *ops, - struct regcache *regcache, int regno) -{ - struct gdbarch *gdbarch = get_regcache_arch (regcache); - cma__t_int_tcb tcb, *tcb_ptr; - struct cleanup *old_chain; - int i; - int first_regno, last_regno; - - tcb_ptr = find_tcb (inferior_ptid); - - old_chain = save_inferior_ptid (); - - inferior_ptid = main_ptid; - - if (tcb_ptr->state == cma__c_state_running) - { - deprecated_child_ops.to_store_registers (&deprecated_child_ops, - regcache, regno); - - do_cleanups (old_chain); - - return; - } - - if (regno == -1) - { - first_regno = 0; - last_regno = gdbarch_num_regs (gdbarch) - 1; - } - else - { - first_regno = regno; - last_regno = regno; - } - - for (regno = first_regno; regno <= last_regno; regno++) - { - if (regmap[regno] == -1) - deprecated_child_ops.to_store_registers (regcache, regno); - else - { - unsigned char buf[MAX_REGISTER_SIZE]; - CORE_ADDR sp; - - sp = (CORE_ADDR) tcb_ptr->static_ctx.sp - 160; - - if (regno == HPPA_FLAGS_REGNUM) - { - /* Let lower layer handle this... */ - deprecated_child_ops.to_store_registers - (&deprecated_child_ops, regcache, regno); - } - else if (regno == HPPA_SP_REGNUM) - { - regcache_raw_collect (regcache, regno, buf); - write_memory ((CORE_ADDR) &tcb_ptr->static_ctx.sp, buf, - register_size (gdbarch, regno)); - tcb_ptr->static_ctx.sp - = (cma__t_hppa_regs *) ((CORE_ADDR) buf + 160); - } - else if (regno == HPPA_PCOQ_HEAD_REGNUM) - { - regcache_raw_collect (regcache, regno, buf); - write_memory (sp - 20, buf, - register_size (gdbarch, regno)); - } - else - { - regcache_raw_collect (regcache, regno, buf); - write_memory (sp + regmap[regno], buf, - register_size (gdbarch, regno)); - } - } - } - - do_cleanups (old_chain); -} - -/* Get ready to modify the registers array. On machines which store - individual registers, this doesn't need to do anything. On machines - which store all the registers in one fell swoop, this makes sure - that registers contains all the registers from the program being - debugged. */ - -static void -hpux_thread_prepare_to_store (struct regcache *regcache) -{ - deprecated_child_ops.to_prepare_to_store (regcache); -} - -static int -hpux_thread_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, - int dowrite, struct mem_attrib *attribs, - struct target_ops *target) -{ - int retval; - struct cleanup *old_chain; - - old_chain = save_inferior_ptid (); - - inferior_ptid = main_ptid; - - retval = - deprecated_child_ops.deprecated_xfer_memory (memaddr, myaddr, len, - dowrite, attribs, target); - - do_cleanups (old_chain); - - return retval; -} - -/* Print status information about what we're accessing. */ - -static void -hpux_thread_files_info (struct target_ops *ignore) -{ - deprecated_child_ops.to_files_info (ignore); -} - -static void -hpux_thread_kill_inferior (struct target_ops *ops) -{ - deprecated_child_ops.to_kill (&deprecated_child_ops); -} - -static void -hpux_thread_notice_signals (ptid_t ptid) -{ - deprecated_child_ops.to_notice_signals (ptid); -} - -/* Fork an inferior process, and start debugging it with /proc. */ - -static void -hpux_thread_create_inferior (struct target_ops *ops, char *exec_file, - char *allargs, char **env, int from_tty) -{ - deprecated_child_ops.to_create_inferior (&deprecated_child_ops, - exec_file, allargs, env, from_tty); - - if (hpux_thread_active) - { - main_ptid = inferior_ptid; - - push_target (&hpux_thread_ops); - - inferior_ptid = find_active_thread (); - - add_thread (inferior_ptid); - } -} - -/* This routine is called whenever a new symbol table is read in, or when all - symbol tables are removed. libthread_db can only be initialized when it - finds the right variables in libthread.so. Since it's a shared library, - those variables don't show up until the library gets mapped and the symbol - table is read in. */ - -static void -hpux_thread_new_objfile (struct objfile *objfile) -{ - struct minimal_symbol *ms; - - if (!objfile) - { - hpux_thread_active = 0; - return; - } - - ms = lookup_minimal_symbol ("cma__g_known_threads", NULL, objfile); - - if (!ms) - return; - - P_cma__g_known_threads = SYMBOL_VALUE_ADDRESS (ms); - - ms = lookup_minimal_symbol ("cma__g_current_thread", NULL, objfile); - - if (!ms) - return; - - P_cma__g_current_thread = SYMBOL_VALUE_ADDRESS (ms); - - hpux_thread_active = 1; -} - -/* Clean up after the inferior dies. */ - -static void -hpux_thread_mourn_inferior (void) -{ - deprecated_child_ops.to_mourn_inferior (&deprecated_child_ops); -} - -/* Mark our target-struct as eligible for stray "run" and "attach" - commands. */ - -static int -hpux_thread_can_run (void) -{ - return child_suppress_run; -} - -static int -hpux_thread_alive (struct target_ops *ops, ptid_t ptid) -{ - return 1; -} - -static void -hpux_thread_stop (ptid_t ptid) -{ - deprecated_child_ops.to_stop (ptid); -} - -static void -init_hpux_thread_ops (void) -{ - hpux_thread_ops.to_shortname = "hpux-threads"; - hpux_thread_ops.to_longname = "HPUX threads and pthread."; - hpux_thread_ops.to_doc = "HPUX threads and pthread support."; - hpux_thread_ops.to_open = hpux_thread_open; - hpux_thread_ops.to_attach = hpux_thread_attach; - hpux_thread_ops.to_detach = hpux_thread_detach; - hpux_thread_ops.to_resume = hpux_thread_resume; - hpux_thread_ops.to_wait = hpux_thread_wait; - hpux_thread_ops.to_fetch_registers = hpux_thread_fetch_registers; - hpux_thread_ops.to_store_registers = hpux_thread_store_registers; - hpux_thread_ops.to_prepare_to_store = hpux_thread_prepare_to_store; - hpux_thread_ops.deprecated_xfer_memory = hpux_thread_xfer_memory; - hpux_thread_ops.to_files_info = hpux_thread_files_info; - hpux_thread_ops.to_insert_breakpoint = memory_insert_breakpoint; - hpux_thread_ops.to_remove_breakpoint = memory_remove_breakpoint; - hpux_thread_ops.to_terminal_init = terminal_init_inferior; - hpux_thread_ops.to_terminal_inferior = terminal_inferior; - hpux_thread_ops.to_terminal_ours_for_output = terminal_ours_for_output; - hpux_thread_ops.to_terminal_save_ours = terminal_save_ours; - hpux_thread_ops.to_terminal_ours = terminal_ours; - hpux_thread_ops.to_terminal_info = child_terminal_info; - hpux_thread_ops.to_kill = hpux_thread_kill_inferior; - hpux_thread_ops.to_create_inferior = hpux_thread_create_inferior; - hpux_thread_ops.to_mourn_inferior = hpux_thread_mourn_inferior; - hpux_thread_ops.to_can_run = hpux_thread_can_run; - hpux_thread_ops.to_notice_signals = hpux_thread_notice_signals; - hpux_thread_ops.to_thread_alive = hpux_thread_alive; - hpux_thread_ops.to_stop = hpux_thread_stop; - hpux_thread_ops.to_stratum = process_stratum; - hpux_thread_ops.to_has_all_memory = default_child_has_all_memory; - hpux_thread_ops.to_has_memory = default_child_has_memory; - hpux_thread_ops.to_has_stack = default_child_has_stack; - hpux_thread_ops.to_has_registers = default_child_has_registers; - hpux_thread_ops.to_has_execution = default_child_has_execution; - hpux_thread_ops.to_magic = OPS_MAGIC; -} - -void -_initialize_hpux_thread (void) -{ - init_hpux_thread_ops (); - add_target (&hpux_thread_ops); - - child_suppress_run = 1; - /* Hook into new_objfile notification. */ - observer_attach_new_objfile (hpux_thread_new_objfile); -} |