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PPC: Fail on leaking temporaries

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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>
This commit is contained in:
Alexander Graf 2014-01-19 17:28:33 +01:00
parent c80d1df508
commit 3de3179782
1 changed files with 7 additions and 0 deletions
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7
target-ppc/translate.c
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@ -11767,6 +11767,7 @@ static inline void gen_intermediate_code_internal(PowerPCCPU *cpu,
max_insns = CF_COUNT_MASK; max_insns = CF_COUNT_MASK;
gen_tb_start(); gen_tb_start();
tcg_clear_temp_count();
/* Set env in case of segfault during code fetch */ /* Set env in case of segfault during code fetch */
while (ctx.exception == POWERPC_EXCP_NONE while (ctx.exception == POWERPC_EXCP_NONE
&& tcg_ctx.gen_opc_ptr < gen_opc_end) { && tcg_ctx.gen_opc_ptr < gen_opc_end) {
@ -11866,6 +11867,12 @@ static inline void gen_intermediate_code_internal(PowerPCCPU *cpu,
*/ */
break; 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) if (tb->cflags & CF_LAST_IO)
gen_io_end(); gen_io_end();