Merge tag 'pull-tcg-20230116' of https://gitlab.com/rth7680/qemu into staging

- Reorg cpu_tb_exec around setjmp.
- Use __attribute__((target)) for buffer_is_zero.
- Add perfmap and jitdump for perf support.

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* tag 'pull-tcg-20230116' of https://gitlab.com/rth7680/qemu:
  accel/tcg: Split out cpu_exec_{setjmp,loop}
  util/bufferiszero: Use __attribute__((target)) for avx2/avx512
  tcg: add perfmap and jitdump
  accel/tcg: Add debuginfo support
  linux-user: Clean up when exiting due to a signal

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

5 files changed, 26 insertions, 3 deletions

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 20894b6..5928c14 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -19,6 +19,7 @@
 #include "qemu/selfmap.h"
 #include "qapi/error.h"
 #include "target_signal.h"
+#include "accel/tcg/debuginfo.h"
 
 #ifdef _ARCH_PPC64
 #undef ARCH_DLINFO
@@ -3261,6 +3262,8 @@ static void load_elf_image(const char *image_name, int image_fd,
         load_symbols(ehdr, image_fd, load_bias);
     }
 
+    debuginfo_report_elf(image_name, image_fd, load_bias);
+
     mmap_unlock();
 
     close(image_fd);
diff --git a/linux-user/exit.c b/linux-user/exit.c
index fa6ef0b..607b6da 100644
--- a/linux-user/exit.c
+++ b/linux-user/exit.c
@@ -17,6 +17,7 @@
  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 #include "qemu/osdep.h"
+#include "accel/tcg/perf.h"
 #include "exec/gdbstub.h"
 #include "qemu.h"
 #include "user-internals.h"
@@ -38,4 +39,5 @@ void preexit_cleanup(CPUArchState *env, int code)
 #endif
         gdb_exit(code);
         qemu_plugin_user_exit();
+        perf_exit();
 }
diff --git a/linux-user/main.c b/linux-user/main.c
index a17fed0..4290651 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -53,6 +53,7 @@
 #include "signal-common.h"
 #include "loader.h"
 #include "user-mmap.h"
+#include "accel/tcg/perf.h"
 
 #ifdef CONFIG_SEMIHOSTING
 #include "semihosting/semihost.h"
@@ -423,6 +424,16 @@ static void handle_arg_abi_call0(const char *arg)
 }
 #endif
 
+static void handle_arg_perfmap(const char *arg)
+{
+    perf_enable_perfmap();
+}
+
+static void handle_arg_jitdump(const char *arg)
+{
+    perf_enable_jitdump();
+}
+
 static QemuPluginList plugins = QTAILQ_HEAD_INITIALIZER(plugins);
 
 #ifdef CONFIG_PLUGIN
@@ -493,6 +504,10 @@ static const struct qemu_argument arg_table[] = {
     {"xtensa-abi-call0", "QEMU_XTENSA_ABI_CALL0", false, handle_arg_abi_call0,
      "",           "assume CALL0 Xtensa ABI"},
 #endif
+    {"perfmap",    "QEMU_PERFMAP",     false, handle_arg_perfmap,
+     "",           "Generate a /tmp/perf-${pid}.map file for perf"},
+    {"jitdump",    "QEMU_JITDUMP",     false, handle_arg_jitdump,
+     "",           "Generate a jit-${pid}.dump file for perf"},
     {NULL, NULL, false, NULL, NULL, NULL}
 };
 
diff --git a/linux-user/meson.build b/linux-user/meson.build
index de4320a..7171dc6 100644
--- a/linux-user/meson.build
+++ b/linux-user/meson.build
@@ -22,6 +22,7 @@ linux_user_ss.add(files(
   'uname.c',
 ))
 linux_user_ss.add(rt)
+linux_user_ss.add(libdw)
 
 linux_user_ss.add(when: 'TARGET_HAS_BFLT', if_true: files('flatload.c'))
 linux_user_ss.add(when: 'TARGET_I386', if_true: files('vm86.c'))
diff --git a/linux-user/signal.c b/linux-user/signal.c
index 61c6fa3..098f3a7 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -695,7 +695,7 @@ void cpu_loop_exit_sigbus(CPUState *cpu, target_ulong addr,
 
 /* abort execution with signal */
 static G_NORETURN
-void dump_core_and_abort(int target_sig)
+void dump_core_and_abort(CPUArchState *cpu_env, int target_sig)
 {
     CPUState *cpu = thread_cpu;
     CPUArchState *env = cpu->env_ptr;
@@ -724,6 +724,8 @@ void dump_core_and_abort(int target_sig)
             target_sig, strsignal(host_sig), "core dumped" );
     }
 
+    preexit_cleanup(cpu_env, 128 + target_sig);
+
     /* The proper exit code for dying from an uncaught signal is
      * -<signal>.  The kernel doesn't allow exit() or _exit() to pass
      * a negative value.  To get the proper exit code we need to
@@ -1058,12 +1060,12 @@ static void handle_pending_signal(CPUArchState *cpu_env, int sig,
                    sig != TARGET_SIGURG &&
                    sig != TARGET_SIGWINCH &&
                    sig != TARGET_SIGCONT) {
-            dump_core_and_abort(sig);
+            dump_core_and_abort(cpu_env, sig);
         }
     } else if (handler == TARGET_SIG_IGN) {
         /* ignore sig */
     } else if (handler == TARGET_SIG_ERR) {
-        dump_core_and_abort(sig);
+        dump_core_and_abort(cpu_env, sig);
     } else {
         /* compute the blocked signals during the handler execution */
         sigset_t *blocked_set;