diff mbox

[PULL,063/118] PPC: Fail on leaking temporaries

Message ID 1401885899-16524-64-git-send-email-agraf@suse.de
State New
Headers show

Commit Message

Alexander Graf June 4, 2014, 12:44 p.m. UTC 
When QEMU gets compiled with --enable-debug-tcg we can check for temporary
leakage. Implement the necessary target code for this and fail emulation
when we hit a leakage.

This hopefully ensures that we don't get new leaks.

Signed-off-by: Alexander Graf <agraf@suse.de>
---
 target-ppc/translate.c | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox

Patch

diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index e609d4e..6aede79 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -11766,6 +11766,7 @@  static inline void gen_intermediate_code_internal(PowerPCCPU *cpu,
         max_insns = CF_COUNT_MASK;
 
     gen_tb_start();
+    tcg_clear_temp_count();
     /* Set env in case of segfault during code fetch */
     while (ctx.exception == POWERPC_EXCP_NONE
             && tcg_ctx.gen_opc_ptr < gen_opc_end) {
@@ -11865,6 +11866,12 @@  static inline void gen_intermediate_code_internal(PowerPCCPU *cpu,
              */
             break;
         }
+        if (tcg_check_temp_count()) {
+            fprintf(stderr, "Opcode %02x %02x %02x (%08x) leaked temporaries\n",
+                    opc1(ctx.opcode), opc2(ctx.opcode), opc3(ctx.opcode),
+                    ctx.opcode);
+            exit(1);
+        }
     }
     if (tb->cflags & CF_LAST_IO)
         gen_io_end();