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386_common: Optimize I/O permission checking for word and dword operations (based on qemu)

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RichardG867
2023-04-22 18:41:42 -03:00
parent 041e916472
commit c076406450
7 changed files with 50 additions and 97 deletions
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6
src/cpu/386_common.h
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@@ -97,11 +97,11 @@
if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 3)) \
do_mmutranslate((s) + (a), b, 4, 1)
int checkio(uint32_t port);
int checkio(uint32_t port, int mask);
#define check_io_perm(port) \
#define check_io_perm(port, size) \
if (msw & 1 && ((CPL > IOPL) || (cpu_state.eflags & VM_FLAG))) { \
int tempi = checkio(port); \
int tempi = checkio(port, (1 << size) - 1); \
if (cpu_state.abrt) \
return 1; \
if (tempi) { \