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Made LOCK instruction legality more accurate on 386, closes #4132.

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OBattler
2024-02-10 03:05:56 +01:00
parent 3f8952a558
commit 2ab99dda0b
4 changed files with 98 additions and 3 deletions
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12
src/cpu/cpu.h
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@@ -763,6 +763,11 @@ void cyrix_write_seg_descriptor(uint32_t addr, x86seg *seg);
#define SMHR_VALID (1 << 0)
#define SMHR_ADDR_MASK (0xfffffffc)
typedef union {
uint32_t fd;
uint8_t b[4];
} fetch_dat_t;
typedef struct {
struct {
uint32_t base;
@@ -817,4 +822,11 @@ extern void prefetch_flush(void);
extern void prefetch_run(int instr_cycles, int bytes, int modrm, int reads, int reads_l, int writes, int writes_l, int ea32);
extern int lock_legal[256];
extern int lock_legal_0f[256];
extern int lock_legal_ba[8];
extern int lock_legal_80[8];
extern int lock_legal_f6[8];
extern int lock_legal_fe[8];
#endif /*EMU_CPU_H*/