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author | Richard Henderson <rth@twiddle.net> | 2015-09-01 19:11:45 -0700 |
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committer | Richard Henderson <rth@twiddle.net> | 2015-10-07 20:36:51 +1100 |
commit | fca8a500d519a56abeaedf8073167a61d3c6b9c4 (patch) | |
tree | c0b16245be9a0ee93491586045f9ed9c0961beb5 /tcg | |
parent | bad729e272387de7dbfa3ec4319036552fc6c107 (diff) | |
download | qemu-fca8a500d519a56abeaedf8073167a61d3c6b9c4.zip qemu-fca8a500d519a56abeaedf8073167a61d3c6b9c4.tar.gz qemu-fca8a500d519a56abeaedf8073167a61d3c6b9c4.tar.bz2 |
tcg: Save insn data and use it in cpu_restore_state_from_tb
We can now restore state without retranslation.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg')
-rw-r--r-- | tcg/tcg.c | 40 | ||||
-rw-r--r-- | tcg/tcg.h | 4 |
2 files changed, 29 insertions, 15 deletions
@@ -2294,7 +2294,7 @@ static inline int tcg_gen_code_common(TCGContext *s, tcg_insn_unit *gen_code_buf, long search_pc) { - int i, oi, oi_next; + int i, oi, oi_next, num_insns; #ifdef DEBUG_DISAS if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP))) { @@ -2338,6 +2338,7 @@ static inline int tcg_gen_code_common(TCGContext *s, tcg_out_tb_init(s); + num_insns = -1; for (oi = s->gen_first_op_idx; oi >= 0; oi = oi_next) { TCGOp * const op = &s->gen_op_buf[oi]; TCGArg * const args = &s->gen_opparam_buf[op->args]; @@ -2361,6 +2362,10 @@ static inline int tcg_gen_code_common(TCGContext *s, tcg_reg_alloc_movi(s, args, dead_args, sync_args); break; case INDEX_op_insn_start: + if (num_insns >= 0) { + s->gen_insn_end_off[num_insns] = tcg_current_code_size(s); + } + num_insns++; for (i = 0; i < TARGET_INSN_START_WORDS; ++i) { target_ulong a; #if TARGET_LONG_BITS > TCG_TARGET_REG_BITS @@ -2368,7 +2373,7 @@ static inline int tcg_gen_code_common(TCGContext *s, #else a = args[i]; #endif - s->gen_opc_data[i] = a; + s->gen_insn_data[num_insns][i] = a; } break; case INDEX_op_discard: @@ -2400,6 +2405,8 @@ static inline int tcg_gen_code_common(TCGContext *s, check_regs(s); #endif } + tcg_debug_assert(num_insns >= 0); + s->gen_insn_end_off[num_insns] = tcg_current_code_size(s); /* Generate TB finalization at the end of block */ tcg_out_tb_finalize(s); @@ -2448,24 +2455,26 @@ int tcg_gen_code_search_pc(TCGContext *s, tcg_insn_unit *gen_code_buf, void tcg_dump_info(FILE *f, fprintf_function cpu_fprintf) { TCGContext *s = &tcg_ctx; - int64_t tot; + int64_t tb_count = s->tb_count; + int64_t tb_div_count = tb_count ? tb_count : 1; + int64_t tot = s->interm_time + s->code_time; - tot = s->interm_time + s->code_time; cpu_fprintf(f, "JIT cycles %" PRId64 " (%0.3f s at 2.4 GHz)\n", tot, tot / 2.4e9); cpu_fprintf(f, "translated TBs %" PRId64 " (aborted=%" PRId64 " %0.1f%%)\n", - s->tb_count, - s->tb_count1 - s->tb_count, - s->tb_count1 ? (double)(s->tb_count1 - s->tb_count) / s->tb_count1 * 100.0 : 0); + tb_count, s->tb_count1 - tb_count, + (double)(s->tb_count1 - s->tb_count) + / (s->tb_count1 ? s->tb_count1 : 1) * 100.0); cpu_fprintf(f, "avg ops/TB %0.1f max=%d\n", - s->tb_count ? (double)s->op_count / s->tb_count : 0, s->op_count_max); + (double)s->op_count / tb_div_count, s->op_count_max); cpu_fprintf(f, "deleted ops/TB %0.2f\n", - s->tb_count ? - (double)s->del_op_count / s->tb_count : 0); + (double)s->del_op_count / tb_div_count); cpu_fprintf(f, "avg temps/TB %0.2f max=%d\n", - s->tb_count ? - (double)s->temp_count / s->tb_count : 0, - s->temp_count_max); + (double)s->temp_count / tb_div_count, s->temp_count_max); + cpu_fprintf(f, "avg host code/TB %0.1f\n", + (double)s->code_out_len / tb_div_count); + cpu_fprintf(f, "avg search data/TB %0.1f\n", + (double)s->search_out_len / tb_div_count); cpu_fprintf(f, "cycles/op %0.1f\n", s->op_count ? (double)tot / s->op_count : 0); @@ -2473,8 +2482,11 @@ void tcg_dump_info(FILE *f, fprintf_function cpu_fprintf) s->code_in_len ? (double)tot / s->code_in_len : 0); cpu_fprintf(f, "cycles/out byte %0.1f\n", s->code_out_len ? (double)tot / s->code_out_len : 0); - if (tot == 0) + cpu_fprintf(f, "cycles/search byte %0.1f\n", + s->search_out_len ? (double)tot / s->search_out_len : 0); + if (tot == 0) { tot = 1; + } cpu_fprintf(f, " gen_interm time %0.1f%%\n", (double)s->interm_time / tot * 100.0); cpu_fprintf(f, " gen_code time %0.1f%%\n", @@ -532,6 +532,7 @@ struct TCGContext { int64_t del_op_count; int64_t code_in_len; int64_t code_out_len; + int64_t search_out_len; int64_t interm_time; int64_t code_time; int64_t la_time; @@ -581,7 +582,8 @@ struct TCGContext { uint16_t gen_opc_icount[OPC_BUF_SIZE]; uint8_t gen_opc_instr_start[OPC_BUF_SIZE]; - target_ulong gen_opc_data[TARGET_INSN_START_WORDS]; + uint16_t gen_insn_end_off[TCG_MAX_INSNS]; + target_ulong gen_insn_data[TCG_MAX_INSNS][TARGET_INSN_START_WORDS]; }; extern TCGContext tcg_ctx; |