Merge remote-tracking branch 'remotes/stsquad/tags/pull-tcg-plugins-281019-4' into staging

TCG Plugins initial implementation

  - use --enable-plugins @ configure
  - low impact introspection (-plugin empty.so to measure overhead)
  - plugins cannot alter guest state
  - example plugins included in source tree (tests/plugins)
  - -d plugin to enable plugin output in logs
  - check-tcg runs extra tests when plugins enabled
  - documentation in docs/devel/plugins.rst

# gpg: Signature made Mon 28 Oct 2019 15:13:23 GMT
# gpg:                using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* remotes/stsquad/tags/pull-tcg-plugins-281019-4: (57 commits)
  travis.yml: enable linux-gcc-debug-tcg cache
  MAINTAINERS: add me for the TCG plugins code
  scripts/checkpatch.pl: don't complain about (foo, /* empty */)
  .travis.yml: add --enable-plugins tests
  include/exec: wrap cpu_ldst.h in CONFIG_TCG
  accel/stubs: reduce headers from tcg-stub
  tests/plugin: add hotpages to analyse memory access patterns
  tests/plugin: add instruction execution breakdown
  tests/plugin: add a hotblocks plugin
  tests/tcg: enable plugin testing
  tests/tcg: drop test-i386-fprem from TESTS when not SLOW
  tests/tcg: move "virtual" tests to EXTRA_TESTS
  tests/tcg: set QEMU_OPTS for all cris runs
  tests/tcg/Makefile.target: fix path to config-host.mak
  tests/plugin: add sample plugins
  linux-user: support -plugin option
  vl: support -plugin option
  plugin: add qemu_plugin_outs helper
  plugin: add qemu_plugin_insn_disas helper
  plugin: expand the plugin_init function to include an info block
  ...

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

1 files changed, 18 insertions, 6 deletions

diff --git a/bsd-user/syscall.c b/bsd-user/syscall.c
index 1ee6195d9f..0d45b654bb 100644
--- a/bsd-user/syscall.c
+++ b/bsd-user/syscall.c
@@ -26,6 +26,7 @@
 
 #include "qemu.h"
 #include "qemu-common.h"
+#include "user/syscall-trace.h"
 
 //#define DEBUG
 
@@ -322,7 +323,8 @@ abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1,
 #ifdef DEBUG
     gemu_log("freebsd syscall %d\n", num);
 #endif
-    trace_guest_user_syscall(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8);
+    record_syscall_start(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, 0, 0);
+
     if(do_strace)
         print_freebsd_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
 
@@ -332,6 +334,7 @@ abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1,
         _mcleanup();
 #endif
         gdb_exit(cpu_env, arg1);
+        qemu_plugin_atexit_cb();
         /* XXX: should free thread stack and CPU env */
         _exit(arg1);
         ret = 0; /* avoid warning */
@@ -402,7 +405,8 @@ abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1,
 #endif
     if (do_strace)
         print_freebsd_syscall_ret(num, ret);
-    trace_guest_user_syscall_ret(cpu, num, ret);
+
+    record_syscall_return(cpu, num, ret);
     return ret;
  efault:
     ret = -TARGET_EFAULT;
@@ -420,7 +424,9 @@ abi_long do_netbsd_syscall(void *cpu_env, int num, abi_long arg1,
 #ifdef DEBUG
     gemu_log("netbsd syscall %d\n", num);
 #endif
-    trace_guest_user_syscall(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, 0, 0);
+
+    record_syscall_start(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, 0, 0);
+
     if(do_strace)
         print_netbsd_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
 
@@ -430,6 +436,7 @@ abi_long do_netbsd_syscall(void *cpu_env, int num, abi_long arg1,
         _mcleanup();
 #endif
         gdb_exit(cpu_env, arg1);
+        qemu_plugin_atexit_cb();
         /* XXX: should free thread stack and CPU env */
         _exit(arg1);
         ret = 0; /* avoid warning */
@@ -477,7 +484,8 @@ abi_long do_netbsd_syscall(void *cpu_env, int num, abi_long arg1,
 #endif
     if (do_strace)
         print_netbsd_syscall_ret(num, ret);
-    trace_guest_user_syscall_ret(cpu, num, ret);
+
+    record_syscall_return(cpu, num, ret);
     return ret;
  efault:
     ret = -TARGET_EFAULT;
@@ -495,7 +503,9 @@ abi_long do_openbsd_syscall(void *cpu_env, int num, abi_long arg1,
 #ifdef DEBUG
     gemu_log("openbsd syscall %d\n", num);
 #endif
-    trace_guest_user_syscall(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, 0, 0);
+
+    record_syscall_start(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, 0, 0);
+
     if(do_strace)
         print_openbsd_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
 
@@ -505,6 +515,7 @@ abi_long do_openbsd_syscall(void *cpu_env, int num, abi_long arg1,
         _mcleanup();
 #endif
         gdb_exit(cpu_env, arg1);
+        qemu_plugin_atexit_cb();
         /* XXX: should free thread stack and CPU env */
         _exit(arg1);
         ret = 0; /* avoid warning */
@@ -552,7 +563,8 @@ abi_long do_openbsd_syscall(void *cpu_env, int num, abi_long arg1,
 #endif
     if (do_strace)
         print_openbsd_syscall_ret(num, ret);
-    trace_guest_user_syscall_ret(cpu, num, ret);
+
+    record_syscall_return(cpu, num, ret);
     return ret;
  efault:
     ret = -TARGET_EFAULT;