Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20191111' into staging

[qemu.git] / accel / tcg / translator.c

diff --git a/accel/tcg/translator.c b/accel/tcg/translator.c
index 8d65ead70853d3616ef05a2b715522b846b0a542..f977682be79f5a811fab183a82d61f5ce5023f5e 100644 (file)
--- a/accel/tcg/translator.c
+++ b/accel/tcg/translator.c
@@ -8,7 +8,6 @@
  */
 
 #include "qemu/osdep.h"
-#include "qemu-common.h"
 #include "qemu/error-report.h"
 #include "cpu.h"
 #include "tcg/tcg.h"
@@ -17,6 +16,7 @@
 #include "exec/gen-icount.h"
 #include "exec/log.h"
 #include "exec/translator.h"
+#include "exec/plugin-gen.h"
 
 /* Pairs with tcg_clear_temp_count.
    To be called by #TranslatorOps.{translate_insn,tb_stop} if
@@ -35,6 +35,7 @@ void translator_loop(const TranslatorOps *ops, DisasContextBase *db,
                      CPUState *cpu, TranslationBlock *tb, int max_insns)
 {
     int bp_insn = 0;
+    bool plugin_enabled;
 
     /* Initialize DisasContext */
     db->tb = tb;
@@ -56,11 +57,17 @@ void translator_loop(const TranslatorOps *ops, DisasContextBase *db,
     ops->tb_start(db, cpu);
     tcg_debug_assert(db->is_jmp == DISAS_NEXT);  /* no early exit */
 
+    plugin_enabled = plugin_gen_tb_start(cpu, tb);
+
     while (true) {
         db->num_insns++;
         ops->insn_start(db, cpu);
         tcg_debug_assert(db->is_jmp == DISAS_NEXT);  /* no early exit */
 
+        if (plugin_enabled) {
+            plugin_gen_insn_start(cpu, db);
+        }
+
         /* Pass breakpoint hits to target for further processing */
         if (!db->singlestep_enabled
             && unlikely(!QTAILQ_EMPTY(&cpu->breakpoints))) {
@@ -91,7 +98,6 @@ void translator_loop(const TranslatorOps *ops, DisasContextBase *db,
             /* Accept I/O on the last instruction.  */
             gen_io_start();
             ops->translate_insn(db, cpu);
-            gen_io_end();
         } else {
             ops->translate_insn(db, cpu);
         }
@@ -101,6 +107,14 @@ void translator_loop(const TranslatorOps *ops, DisasContextBase *db,
             break;
         }
 
+        /*
+         * We can't instrument after instructions that change control
+         * flow although this only really affects post-load operations.
+         */
+        if (plugin_enabled) {
+            plugin_gen_insn_end();
+        }
+
         /* Stop translation if the output buffer is full,
            or we have executed all of the allowed instructions.  */
         if (tcg_op_buf_full() || db->num_insns >= db->max_insns) {
@@ -113,6 +127,10 @@ void translator_loop(const TranslatorOps *ops, DisasContextBase *db,
     ops->tb_stop(db, cpu);
     gen_tb_end(db->tb, db->num_insns - bp_insn);
 
+    if (plugin_enabled) {
+        plugin_gen_tb_end(cpu);
+    }
+
     /* The disas_log hook may use these values rather than recompute.  */
     db->tb->size = db->pc_next - db->pc_first;
     db->tb->icount = db->num_insns;