diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/exec/gen-icount.h | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/include/exec/gen-icount.h b/include/exec/gen-icount.h index aa4b44354a..298e01eef4 100644 --- a/include/exec/gen-icount.h +++ b/include/exec/gen-icount.h @@ -34,7 +34,7 @@ static inline void gen_io_end(void) static inline void gen_tb_start(const TranslationBlock *tb) { - TCGv_i32 count, imm; + TCGv_i32 count; tcg_ctx->exitreq_label = gen_new_label(); if (tb_cflags(tb) & CF_USE_ICOUNT) { @@ -48,15 +48,13 @@ static inline void gen_tb_start(const TranslationBlock *tb) offsetof(ArchCPU, env)); if (tb_cflags(tb) & CF_USE_ICOUNT) { - imm = tcg_temp_new_i32(); - /* We emit a movi with a dummy immediate argument. Keep the insn index - * of the movi so that we later (when we know the actual insn count) - * can update the immediate argument with the actual insn count. */ - tcg_gen_movi_i32(imm, 0xdeadbeef); + /* + * We emit a sub with a dummy immediate argument. Keep the insn index + * of the sub so that we later (when we know the actual insn count) + * can update the argument with the actual insn count. + */ + tcg_gen_sub_i32(count, count, tcg_constant_i32(0)); icount_start_insn = tcg_last_op(); - - tcg_gen_sub_i32(count, count, imm); - tcg_temp_free_i32(imm); } tcg_gen_brcondi_i32(TCG_COND_LT, count, 0, tcg_ctx->exitreq_label); @@ -74,9 +72,12 @@ static inline void gen_tb_start(const TranslationBlock *tb) static inline void gen_tb_end(const TranslationBlock *tb, int num_insns) { if (tb_cflags(tb) & CF_USE_ICOUNT) { - /* Update the num_insn immediate parameter now that we know - * the actual insn count. */ - tcg_set_insn_param(icount_start_insn, 1, num_insns); + /* + * Update the num_insn immediate parameter now that we know + * the actual insn count. + */ + tcg_set_insn_param(icount_start_insn, 2, + tcgv_i32_arg(tcg_constant_i32(num_insns))); } gen_set_label(tcg_ctx->exitreq_label); |