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accel/tcg: Add insn_start to DisasContextBase 

This is currently target-specific for many; begin making it
target independent.

Tested-by: Jørgen Hansen <Jorgen.Hansen@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2024-04-06 10:42:10 -10:00
parent 07843f75fd
commit e7face702a
2 changed files with 5 additions and 0 deletions
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2
accel/tcg/translator.c
View File

@ -140,6 +140,7 @@ void translator_loop(CPUState *cpu, TranslationBlock *tb, int *max_insns,
db->max_insns = *max_insns;
db->singlestep_enabled = cflags & CF_SINGLE_STEP;
db->saved_can_do_io = -1;
db->insn_start = NULL;
db->host_addr[0] = host_pc;
db->host_addr[1] = NULL;
@ -157,6 +158,7 @@ void translator_loop(CPUState *cpu, TranslationBlock *tb, int *max_insns,
while (true) {
*max_insns = ++db->num_insns;
ops->insn_start(db, cpu);
db->insn_start = tcg_last_op();
tcg_debug_assert(db->is_jmp == DISAS_NEXT); /* no early exit */
if (plugin_enabled) {

3
include/exec/translator.h
View File

@ -74,6 +74,8 @@ typedef enum DisasJumpType {
* @singlestep_enabled: "Hardware" single stepping enabled.
* @saved_can_do_io: Known value of cpu->neg.can_do_io, or -1 for unknown.
* @plugin_enabled: TCG plugin enabled in this TB.
* @insn_start: The last op emitted by the insn_start hook,
* which is expected to be INDEX_op_insn_start.
*
* Architecture-agnostic disassembly context.
*/
@ -87,6 +89,7 @@ typedef struct DisasContextBase {
bool singlestep_enabled;
int8_t saved_can_do_io;
bool plugin_enabled;
struct TCGOp *insn_start;
void *host_addr[2];
} DisasContextBase;