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

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This commit is contained in:
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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20
src/cpu/x86_ops_rep_dyn.h
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@@ -7,7 +7,7 @@
uint8_t temp; \
\
SEG_CHECK_WRITE(&cpu_state.seg_es); \
check_io_perm(DX); \
check_io_perm(DX, 1); \
CHECK_WRITE(&cpu_state.seg_es, DEST_REG, DEST_REG); \
high_page = 0; \
do_mmut_wb(es, DEST_REG, &addr64); \
@@ -40,8 +40,7 @@
uint16_t temp; \
\
SEG_CHECK_WRITE(&cpu_state.seg_es); \
check_io_perm(DX); \
check_io_perm(DX + 1); \
check_io_perm(DX, 2); \
CHECK_WRITE(&cpu_state.seg_es, DEST_REG, DEST_REG + 1UL); \
high_page = 0; \
do_mmut_ww(es, DEST_REG, addr64a); \
@@ -74,10 +73,7 @@
uint32_t temp; \
\
SEG_CHECK_WRITE(&cpu_state.seg_es); \
check_io_perm(DX); \
check_io_perm(DX + 1); \
check_io_perm(DX + 2); \
check_io_perm(DX + 3); \
check_io_perm(DX, 4); \
CHECK_WRITE(&cpu_state.seg_es, DEST_REG, DEST_REG + 3UL); \
high_page = 0; \
do_mmut_wl(es, DEST_REG, addr64a); \
@@ -112,7 +108,7 @@
temp = readmemb(cpu_state.ea_seg->base, SRC_REG); \
if (cpu_state.abrt) \
return 1; \
check_io_perm(DX); \
check_io_perm(DX, 1); \
outb(DX, temp); \
if (cpu_state.flags & D_FLAG) \
SRC_REG--; \
@@ -137,8 +133,7 @@
temp = readmemw(cpu_state.ea_seg->base, SRC_REG); \
if (cpu_state.abrt) \
return 1; \
check_io_perm(DX); \
check_io_perm(DX + 1); \
check_io_perm(DX, 2); \
outw(DX, temp); \
if (cpu_state.flags & D_FLAG) \
SRC_REG -= 2; \
@@ -163,10 +158,7 @@
temp = readmeml(cpu_state.ea_seg->base, SRC_REG); \
if (cpu_state.abrt) \
return 1; \
check_io_perm(DX); \
check_io_perm(DX + 1); \
check_io_perm(DX + 2); \
check_io_perm(DX + 3); \
check_io_perm(DX, 4); \
outl(DX, temp); \
if (cpu_state.flags & D_FLAG) \
SRC_REG -= 4; \