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accel/tcg: Track current value of can_do_io in the TB

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Simplify translator_io_start by recording the current
known value of can_do_io within DisasContextBase.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-09-14 08:06:14 -07:00
parent 5d97e94638
commit 0ca41ccf1c
2 changed files with 16 additions and 17 deletions
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2
include/exec/translator.h
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@ -72,6 +72,7 @@ typedef enum DisasJumpType {
* @num_insns: Number of translated instructions (including current).
* @max_insns: Maximum number of instructions to be translated in this TB.
* @singlestep_enabled: "Hardware" single stepping enabled.
* @saved_can_do_io: Known value of cpu->neg.can_do_io, or -1 for unknown.
*
* Architecture-agnostic disassembly context.
*/
@ -83,6 +84,7 @@ typedef struct DisasContextBase {
int num_insns;
int max_insns;
bool singlestep_enabled;
int8_t saved_can_do_io;
void *host_addr[2];
} DisasContextBase;