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Disable the debug registers on 486+.

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This commit is contained in:
OBattler
2024-01-14 21:47:52 +01:00
parent d8330a0c46
commit f2971a132f
11 changed files with 1164 additions and 199 deletions
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112
src/cpu/386_common.h
View File

@@ -50,80 +50,80 @@
# define do_mmut_ww(s, a, b) do_mmutranslate_2386((s) + (a), b, 2, 1) # define do_mmut_ww(s, a, b) do_mmutranslate_2386((s) + (a), b, 2, 1)
# define do_mmut_wl(s, a, b) do_mmutranslate_2386((s) + (a), b, 4, 1) # define do_mmut_wl(s, a, b) do_mmutranslate_2386((s) + (a), b, 4, 1)
#else #else
# define readmemb_n(s, a, b) ((readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (dr[7] & 0xFF)) ? readmembl_no_mmut((s) + (a), b) : *(uint8_t *) (readlookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a)))) # define readmemb_n(s, a, b) ((readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF) ? readmembl_no_mmut((s) + (a), b) : *(uint8_t *) (readlookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))))
# define readmemw_n(s, a, b) ((readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (dr[7] & 0xFF) || (((s) + (a)) & 1)) ? readmemwl_no_mmut((s) + (a), b) : *(uint16_t *) (readlookup2[(uint32_t) ((s) + (a)) >> 12] + (uint32_t) ((s) + (a)))) # define readmemw_n(s, a, b) ((readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 1)) ? readmemwl_no_mmut((s) + (a), b) : *(uint16_t *) (readlookup2[(uint32_t) ((s) + (a)) >> 12] + (uint32_t) ((s) + (a))))
# define readmeml_n(s, a, b) ((readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (dr[7] & 0xFF) || (((s) + (a)) & 3)) ? readmemll_no_mmut((s) + (a), b) : *(uint32_t *) (readlookup2[(uint32_t) ((s) + (a)) >> 12] + (uint32_t) ((s) + (a)))) # define readmeml_n(s, a, b) ((readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 3)) ? readmemll_no_mmut((s) + (a), b) : *(uint32_t *) (readlookup2[(uint32_t) ((s) + (a)) >> 12] + (uint32_t) ((s) + (a))))
# define readmemb(s, a) ((readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (dr[7] & 0xFF)) ? readmembl((s) + (a)) : *(uint8_t *) (readlookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a)))) # define readmemb(s, a) ((readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF) ? readmembl((s) + (a)) : *(uint8_t *) (readlookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))))
# define readmemw(s, a) ((readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (dr[7] & 0xFF) || (((s) + (a)) & 1)) ? readmemwl((s) + (a)) : *(uint16_t *) (readlookup2[(uint32_t) ((s) + (a)) >> 12] + (uint32_t) ((s) + (a)))) # define readmemw(s, a) ((readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 1)) ? readmemwl((s) + (a)) : *(uint16_t *) (readlookup2[(uint32_t) ((s) + (a)) >> 12] + (uint32_t) ((s) + (a))))
# define readmeml(s, a) ((readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (dr[7] & 0xFF) || (((s) + (a)) & 3)) ? readmemll((s) + (a)) : *(uint32_t *) (readlookup2[(uint32_t) ((s) + (a)) >> 12] + (uint32_t) ((s) + (a)))) # define readmeml(s, a) ((readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 3)) ? readmemll((s) + (a)) : *(uint32_t *) (readlookup2[(uint32_t) ((s) + (a)) >> 12] + (uint32_t) ((s) + (a))))
# define readmemq(s, a) ((readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (dr[7] & 0xFF) || (((s) + (a)) & 7)) ? readmemql((s) + (a)) : *(uint64_t *) (readlookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a)))) # define readmemq(s, a) ((readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 7)) ? readmemql((s) + (a)) : *(uint64_t *) (readlookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))))
# define writememb_n(s, a, b, v) \ # define writememb_n(s, a, b, v) \
if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (dr[7] & 0xFF)) \ if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF) \
writemembl_no_mmut((s) + (a), b, v); \ writemembl_no_mmut((s) + (a), b, v); \
else \ else \
*(uint8_t *) (writelookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))) = v *(uint8_t *) (writelookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))) = v
# define writememw_n(s, a, b, v) \ # define writememw_n(s, a, b, v) \
if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 1) || (dr[7] & 0xFF)) \ if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 1)) \
writememwl_no_mmut((s) + (a), b, v); \ writememwl_no_mmut((s) + (a), b, v); \
else \ else \
*(uint16_t *) (writelookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))) = v *(uint16_t *) (writelookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))) = v
# define writememl_n(s, a, b, v) \ # define writememl_n(s, a, b, v) \
if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 3) || (dr[7] & 0xFF)) \ if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 3)) \
writememll_no_mmut((s) + (a), b, v); \ writememll_no_mmut((s) + (a), b, v); \
else \ else \
*(uint32_t *) (writelookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))) = v *(uint32_t *) (writelookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))) = v
# define writememb(s, a, v) \ # define writememb(s, a, v) \
if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (dr[7] & 0xFF)) \ if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF) \
writemembl((s) + (a), v); \ writemembl((s) + (a), v); \
else \ else \
*(uint8_t *) (writelookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))) = v *(uint8_t *) (writelookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))) = v
# define writememw(s, a, v) \ # define writememw(s, a, v) \
if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 1) || (dr[7] & 0xFF)) \ if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 1)) \
writememwl((s) + (a), v); \ writememwl((s) + (a), v); \
else \ else \
*(uint16_t *) (writelookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))) = v *(uint16_t *) (writelookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))) = v
# define writememl(s, a, v) \ # define writememl(s, a, v) \
if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 3) || (dr[7] & 0xFF)) \ if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 3)) \
writememll((s) + (a), v); \ writememll((s) + (a), v); \
else \ else \
*(uint32_t *) (writelookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))) = v *(uint32_t *) (writelookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))) = v
# define writememq(s, a, v) \ # define writememq(s, a, v) \
if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 7) || (dr[7] & 0xFF)) \ if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 7)) \
writememql((s) + (a), v); \ writememql((s) + (a), v); \
else \ else \
*(uint64_t *) (writelookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))) = v *(uint64_t *) (writelookup2[(uint32_t) ((s) + (a)) >> 12] + (uintptr_t) ((s) + (a))) = v
# define do_mmut_rb(s, a, b) \ # define do_mmut_rb(s, a, b) \
if (readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (dr[7] & 0xFF)) \ if (readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF) \
do_mmutranslate((s) + (a), b, 1, 0) do_mmutranslate((s) + (a), b, 1, 0)
# define do_mmut_rw(s, a, b) \ # define do_mmut_rw(s, a, b) \
if (readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 1) || (dr[7] & 0xFF)) \ if (readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 1)) \
do_mmutranslate((s) + (a), b, 2, 0) do_mmutranslate((s) + (a), b, 2, 0)
# define do_mmut_rl(s, a, b) \ # define do_mmut_rl(s, a, b) \
if (readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 3) || (dr[7] & 0xFF)) \ if (readlookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 3)) \
do_mmutranslate((s) + (a), b, 4, 0) do_mmutranslate((s) + (a), b, 4, 0)
# define do_mmut_rb2(s, a, b) \ # define do_mmut_rb2(s, a, b) \
old_rl2 = readlookup2[(uint32_t) ((s) + (a)) >> 12]; \ old_rl2 = readlookup2[(uint32_t) ((s) + (a)) >> 12]; \
if (old_rl2 == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (dr[7] & 0xFF)) \ if (old_rl2 == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF) \
do_mmutranslate((s) + (a), b, 1, 0) do_mmutranslate((s) + (a), b, 1, 0)
# define do_mmut_rw2(s, a, b) \ # define do_mmut_rw2(s, a, b) \
old_rl2 = readlookup2[(uint32_t) ((s) + (a)) >> 12]; \ old_rl2 = readlookup2[(uint32_t) ((s) + (a)) >> 12]; \
if (old_rl2 == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 1) || (dr[7] & 0xFF)) \ if (old_rl2 == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 1)) \
do_mmutranslate((s) + (a), b, 2, 0) do_mmutranslate((s) + (a), b, 2, 0)
# define do_mmut_rl2(s, a, b) \ # define do_mmut_rl2(s, a, b) \
old_rl2 = readlookup2[(uint32_t) ((s) + (a)) >> 12]; \ old_rl2 = readlookup2[(uint32_t) ((s) + (a)) >> 12]; \
if (old_rl2 == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 3) || (dr[7] & 0xFF)) \ if (old_rl2 == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 3)) \
do_mmutranslate((s) + (a), b, 4, 0) do_mmutranslate((s) + (a), b, 4, 0)
# define do_mmut_wb(s, a, b) \ # define do_mmut_wb(s, a, b) \
if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (dr[7] & 0xFF)) \ if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF) \
do_mmutranslate((s) + (a), b, 1, 1) do_mmutranslate((s) + (a), b, 1, 1)
# define do_mmut_ww(s, a, b) \ # define do_mmut_ww(s, a, b) \
if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 1) || (dr[7] & 0xFF)) \ if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 1)) \
do_mmutranslate((s) + (a), b, 2, 1) do_mmutranslate((s) + (a), b, 2, 1)
# define do_mmut_wl(s, a, b) \ # define do_mmut_wl(s, a, b) \
if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 3) || (dr[7] & 0xFF)) \ if (writelookup2[(uint32_t) ((s) + (a)) >> 12] == (uintptr_t) LOOKUP_INV || (s) == 0xFFFFFFFF || (((s) + (a)) & 3)) \
do_mmutranslate((s) + (a), b, 4, 1) do_mmutranslate((s) + (a), b, 4, 1)
#endif #endif

37
src/cpu/386_dynarec.c
View File

@@ -223,7 +223,7 @@ fetch_ea_16_long(uint32_t rmdat)
#include "386_ops.h" #include "386_ops.h"
#define CACHE_ON() (!(cr0 & (1 << 30)) && !(cpu_state.flags & T_FLAG) && !(dr[7] & 0xFF)) #define CACHE_ON() (!(cr0 & (1 << 30)) && !(cpu_state.flags & T_FLAG))
#ifdef USE_DYNAREC #ifdef USE_DYNAREC
int32_t cycles_main = 0; int32_t cycles_main = 0;
@@ -268,7 +268,7 @@ exec386_dynarec_int(void)
cpu_block_end = 0; cpu_block_end = 0;
x86_was_reset = 0; x86_was_reset = 0;
if (trap & 2) { if (trap == 2) {
/* Handle the T bit in the new TSS first. */ /* Handle the T bit in the new TSS first. */
CPU_BLOCK_END(); CPU_BLOCK_END();
goto block_ended; goto block_ended;
@@ -285,11 +285,6 @@ exec386_dynarec_int(void)
cpu_state.ea_seg = &cpu_state.seg_ds; cpu_state.ea_seg = &cpu_state.seg_ds;
cpu_state.ssegs = 0; cpu_state.ssegs = 0;
if (UNLIKELY(cpu_386_check_instruction_fault())) {
x86gen();
goto block_ended;
}
fetchdat = fastreadl_fetch(cs + cpu_state.pc); fetchdat = fastreadl_fetch(cs + cpu_state.pc);
# ifdef ENABLE_386_DYNAREC_LOG # ifdef ENABLE_386_DYNAREC_LOG
if (in_smm) if (in_smm)
@@ -300,7 +295,7 @@ exec386_dynarec_int(void)
opcode = fetchdat & 0xFF; opcode = fetchdat & 0xFF;
fetchdat >>= 8; fetchdat >>= 8;
trap |= !!(cpu_state.flags & T_FLAG); trap = cpu_state.flags & T_FLAG;
cpu_state.pc++; cpu_state.pc++;
x86_opcodes[(opcode | cpu_state.op32) & 0x3ff](fetchdat); x86_opcodes[(opcode | cpu_state.op32) & 0x3ff](fetchdat);
@@ -311,14 +306,6 @@ exec386_dynarec_int(void)
cpu_state.pc &= 0xffff; cpu_state.pc &= 0xffff;
# endif # endif
if (!cpu_state.abrt) {
if (!rf_flag_no_clear) {
cpu_state.eflags &= ~RF_FLAG;
}
rf_flag_no_clear = 0;
}
if (((cs + cpu_state.pc) >> 12) != pccache) if (((cs + cpu_state.pc) >> 12) != pccache)
CPU_BLOCK_END(); CPU_BLOCK_END();
@@ -342,10 +329,7 @@ exec386_dynarec_int(void)
block_ended: block_ended:
if (!cpu_state.abrt && trap) { if (!cpu_state.abrt && trap) {
//pclog("Debug trap 0x%X\n", trap); dr[6] |= (trap == 2) ? 0x8000 : 0x4000;
if (trap & 2) dr[6] |= 0x8000;
if (trap & 1) dr[6] |= 0x4000;
trap = 0; trap = 0;
# ifndef USE_NEW_DYNAREC # ifndef USE_NEW_DYNAREC
oldcs = CS; oldcs = CS;
@@ -857,11 +841,6 @@ exec386(int32_t cycs)
cpu_state.ea_seg = &cpu_state.seg_ds; cpu_state.ea_seg = &cpu_state.seg_ds;
cpu_state.ssegs = 0; cpu_state.ssegs = 0;
if (UNLIKELY(cpu_386_check_instruction_fault())) {
x86gen();
goto block_ended;
}
fetchdat = fastreadl_fetch(cs + cpu_state.pc); fetchdat = fastreadl_fetch(cs + cpu_state.pc);
if (!cpu_state.abrt) { if (!cpu_state.abrt) {
@@ -871,7 +850,7 @@ exec386(int32_t cycs)
#endif #endif
opcode = fetchdat & 0xFF; opcode = fetchdat & 0xFF;
fetchdat >>= 8; fetchdat >>= 8;
trap |= !!(cpu_state.flags & T_FLAG); trap = cpu_state.flags & T_FLAG;
cpu_state.pc++; cpu_state.pc++;
x86_opcodes[(opcode | cpu_state.op32) & 0x3ff](fetchdat); x86_opcodes[(opcode | cpu_state.op32) & 0x3ff](fetchdat);
@@ -891,7 +870,6 @@ exec386(int32_t cycs)
if (cpu_end_block_after_ins) if (cpu_end_block_after_ins)
cpu_end_block_after_ins--; cpu_end_block_after_ins--;
block_ended:
if (cpu_state.abrt) { if (cpu_state.abrt) {
flags_rebuild(); flags_rebuild();
tempi = cpu_state.abrt & ABRT_MASK; tempi = cpu_state.abrt & ABRT_MASK;
@@ -916,15 +894,12 @@ block_ended:
} }
} else if (trap) { } else if (trap) {
flags_rebuild(); flags_rebuild();
if (trap & 1)
dr[6] |= 0x4000;
if (trap & 2)
dr[6] |= 0x8000;
trap = 0; trap = 0;
#ifndef USE_NEW_DYNAREC #ifndef USE_NEW_DYNAREC
oldcs = CS; oldcs = CS;
#endif #endif
cpu_state.oldpc = cpu_state.pc; cpu_state.oldpc = cpu_state.pc;
dr[6] |= 0x4000;
x86_int(1); x86_int(1);
} }

18
src/cpu/386_ops.h
View File

@@ -181,7 +181,11 @@ extern void x386_dynarec_log(const char *fmt, ...);
#ifndef OPS_286_386 #ifndef OPS_286_386
# include "x86_ops_cyrix.h" # include "x86_ops_cyrix.h"
#endif #endif
#include "x86_ops_flag.h" #ifdef OPS_286_386
# include "x86_ops_flag_2386.h"
#else
# include "x86_ops_flag.h"
#endif
#include "x86_ops_fpu.h" #include "x86_ops_fpu.h"
#include "x86_ops_inc_dec.h" #include "x86_ops_inc_dec.h"
#include "x86_ops_int.h" #include "x86_ops_int.h"
@@ -200,7 +204,11 @@ extern void x386_dynarec_log(const char *fmt, ...);
# include "x86_ops_mmx_shift.h" # include "x86_ops_mmx_shift.h"
#endif #endif
#include "x86_ops_mov.h" #include "x86_ops_mov.h"
#include "x86_ops_mov_ctrl.h" #ifdef OPS_286_386
# include "x86_ops_mov_ctrl_2386.h"
#else
# include "x86_ops_mov_ctrl.h"
#endif
#include "x86_ops_mov_seg.h" #include "x86_ops_mov_seg.h"
#include "x86_ops_movx.h" #include "x86_ops_movx.h"
#ifndef OPS_286_386 #ifndef OPS_286_386
@@ -218,7 +226,11 @@ extern void x386_dynarec_log(const char *fmt, ...);
# include "x86_ops_rep.h" # include "x86_ops_rep.h"
# endif # endif
#endif #endif
#include "x86_ops_ret.h" #ifdef OPS_286_386
# include "x86_ops_ret_2386.h"
#else
# include "x86_ops_ret.h"
#endif
#include "x86_ops_set.h" #include "x86_ops_set.h"
#include "x86_ops_stack.h" #include "x86_ops_stack.h"
#ifdef OPS_286_386 #ifdef OPS_286_386

4
src/cpu/x86_ops_flag.h
View File

@@ -178,7 +178,6 @@ opPOPF_186(uint32_t fetchdat)
else else
cpu_state.flags = (cpu_state.flags & 0x3200) | (tempw & 0x4dd5) | 2; cpu_state.flags = (cpu_state.flags & 0x3200) | (tempw & 0x4dd5) | 2;
flags_extract(); flags_extract();
rf_flag_no_clear = 1;
CLOCK_CYCLES(5); CLOCK_CYCLES(5);
PREFETCH_RUN(5, 1, -1, 1, 0, 0, 0, 0); PREFETCH_RUN(5, 1, -1, 1, 0, 0, 0, 0);
@@ -212,7 +211,6 @@ opPOPF_286(uint32_t fetchdat)
else else
cpu_state.flags = (cpu_state.flags & 0x3200) | (tempw & 0x4dd5) | 2; cpu_state.flags = (cpu_state.flags & 0x3200) | (tempw & 0x4dd5) | 2;
flags_extract(); flags_extract();
rf_flag_no_clear = 1;
CLOCK_CYCLES(5); CLOCK_CYCLES(5);
PREFETCH_RUN(5, 1, -1, 1, 0, 0, 0, 0); PREFETCH_RUN(5, 1, -1, 1, 0, 0, 0, 0);
@@ -266,7 +264,6 @@ opPOPF(uint32_t fetchdat)
cpu_state.flags = (cpu_state.flags & 0x3200) | (tempw & 0x4dd5) | 2; cpu_state.flags = (cpu_state.flags & 0x3200) | (tempw & 0x4dd5) | 2;
} }
flags_extract(); flags_extract();
rf_flag_no_clear = 1;
CLOCK_CYCLES(5); CLOCK_CYCLES(5);
PREFETCH_RUN(5, 1, -1, 1, 0, 0, 0, 0); PREFETCH_RUN(5, 1, -1, 1, 0, 0, 0, 0);
@@ -310,7 +307,6 @@ opPOPFD(uint32_t fetchdat)
cpu_state.eflags = (templ >> 16) & 3; cpu_state.eflags = (templ >> 16) & 3;
flags_extract(); flags_extract();
rf_flag_no_clear = 1;
CLOCK_CYCLES(5); CLOCK_CYCLES(5);
PREFETCH_RUN(5, 1, -1, 0, 1, 0, 0, 0); PREFETCH_RUN(5, 1, -1, 0, 1, 0, 0, 0);

323
src/cpu/x86_ops_flag_2386.h Normal file
View File

@@ -0,0 +1,323 @@
static int
opCMC(uint32_t fetchdat)
{
flags_rebuild();
cpu_state.flags ^= C_FLAG;
CLOCK_CYCLES(2);
PREFETCH_RUN(2, 1, -1, 0, 0, 0, 0, 0);
return 0;
}
static int
opCLC(uint32_t fetchdat)
{
flags_rebuild();
cpu_state.flags &= ~C_FLAG;
CLOCK_CYCLES(2);
PREFETCH_RUN(2, 1, -1, 0, 0, 0, 0, 0);
return 0;
}
static int
opCLD(uint32_t fetchdat)
{
cpu_state.flags &= ~D_FLAG;
CLOCK_CYCLES(2);
PREFETCH_RUN(2, 1, -1, 0, 0, 0, 0, 0);
return 0;
}
static int
opCLI(uint32_t fetchdat)
{
if (!IOPLp) {
if ((!(cpu_state.eflags & VM_FLAG) && (cr4 & CR4_PVI)) || ((cpu_state.eflags & VM_FLAG) && (cr4 & CR4_VME))) {
cpu_state.eflags &= ~VIF_FLAG;
} else {
x86gpf(NULL, 0);
return 1;
}
} else
cpu_state.flags &= ~I_FLAG;
CLOCK_CYCLES(3);
PREFETCH_RUN(3, 1, -1, 0, 0, 0, 0, 0);
return 0;
}
static int
opSTC(uint32_t fetchdat)
{
flags_rebuild();
cpu_state.flags |= C_FLAG;
CLOCK_CYCLES(2);
PREFETCH_RUN(2, 1, -1, 0, 0, 0, 0, 0);
return 0;
}
static int
opSTD(uint32_t fetchdat)
{
cpu_state.flags |= D_FLAG;
CLOCK_CYCLES(2);
PREFETCH_RUN(2, 1, -1, 0, 0, 0, 0, 0);
return 0;
}
static int
opSTI(uint32_t fetchdat)
{
if (!IOPLp) {
if ((!(cpu_state.eflags & VM_FLAG) && (cr4 & CR4_PVI)) || ((cpu_state.eflags & VM_FLAG) && (cr4 & CR4_VME))) {
if (cpu_state.eflags & VIP_FLAG) {
x86gpf(NULL, 0);
return 1;
} else
cpu_state.eflags |= VIF_FLAG;
} else {
x86gpf(NULL, 0);
return 1;
}
} else
cpu_state.flags |= I_FLAG;
/*First instruction after STI will always execute, regardless of whether
there is a pending interrupt*/
cpu_end_block_after_ins = 2;
CLOCK_CYCLES(2);
PREFETCH_RUN(2, 1, -1, 0, 0, 0, 0, 0);
return 0;
}
static int
opSAHF(uint32_t fetchdat)
{
flags_rebuild();
cpu_state.flags = (cpu_state.flags & 0xff00) | (AH & 0xd5) | 2;
CLOCK_CYCLES(3);
PREFETCH_RUN(3, 1, -1, 0, 0, 0, 0, 0);
#if (defined(USE_DYNAREC) && defined(USE_NEW_DYNAREC))
codegen_flags_changed = 0;
#endif
return 0;
}
static int
opLAHF(uint32_t fetchdat)
{
flags_rebuild();
AH = cpu_state.flags & 0xff;
CLOCK_CYCLES(3);
PREFETCH_RUN(3, 1, -1, 0, 0, 0, 0, 0);
return 0;
}
static int
opPUSHF(uint32_t fetchdat)
{
if ((cpu_state.eflags & VM_FLAG) && (IOPL < 3)) {
if (cr4 & CR4_VME) {
uint16_t temp;
flags_rebuild();
temp = (cpu_state.flags & ~I_FLAG) | 0x3000;
if (cpu_state.eflags & VIF_FLAG)
temp |= I_FLAG;
PUSH_W(temp);
} else {
x86gpf(NULL, 0);
return 1;
}
} else {
flags_rebuild();
PUSH_W(cpu_state.flags);
}
CLOCK_CYCLES(4);
PREFETCH_RUN(4, 1, -1, 0, 0, 1, 0, 0);
return cpu_state.abrt;
}
static int
opPUSHFD(uint32_t fetchdat)
{
uint16_t tempw;
if ((cpu_state.eflags & VM_FLAG) && (IOPL < 3)) {
x86gpf(NULL, 0);
return 1;
}
if (cpu_CR4_mask & CR4_VME)
tempw = cpu_state.eflags & 0x3c;
else if (CPUID)
tempw = cpu_state.eflags & 0x24;
else
tempw = cpu_state.eflags & 4;
flags_rebuild();
PUSH_L(cpu_state.flags | (tempw << 16));
CLOCK_CYCLES(4);
PREFETCH_RUN(4, 1, -1, 0, 0, 0, 1, 0);
return cpu_state.abrt;
}
static int
opPOPF_186(uint32_t fetchdat)
{
uint16_t tempw;
if ((cpu_state.eflags & VM_FLAG) && (IOPL < 3)) {
x86gpf(NULL, 0);
return 1;
}
tempw = POP_W();
if (cpu_state.abrt)
return 1;
if (!(msw & 1))
cpu_state.flags = (cpu_state.flags & 0x7000) | (tempw & 0x0fd5) | 2;
else if (!(CPL))
cpu_state.flags = (tempw & 0x7fd5) | 2;
else if (IOPLp)
cpu_state.flags = (cpu_state.flags & 0x3000) | (tempw & 0x4fd5) | 2;
else
cpu_state.flags = (cpu_state.flags & 0x3200) | (tempw & 0x4dd5) | 2;
flags_extract();
rf_flag_no_clear = 1;
CLOCK_CYCLES(5);
PREFETCH_RUN(5, 1, -1, 1, 0, 0, 0, 0);
#if (defined(USE_DYNAREC) && defined(USE_NEW_DYNAREC))
codegen_flags_changed = 0;
#endif
return 0;
}
static int
opPOPF_286(uint32_t fetchdat)
{
uint16_t tempw;
if ((cpu_state.eflags & VM_FLAG) && (IOPL < 3)) {
x86gpf(NULL, 0);
return 1;
}
tempw = POP_W();
if (cpu_state.abrt)
return 1;
if (!(msw & 1))
cpu_state.flags = (cpu_state.flags & 0x7000) | (tempw & 0x0fd5) | 2;
else if (!(CPL))
cpu_state.flags = (tempw & 0x7fd5) | 2;
else if (IOPLp)
cpu_state.flags = (cpu_state.flags & 0x3000) | (tempw & 0x4fd5) | 2;
else
cpu_state.flags = (cpu_state.flags & 0x3200) | (tempw & 0x4dd5) | 2;
flags_extract();
rf_flag_no_clear = 1;
CLOCK_CYCLES(5);
PREFETCH_RUN(5, 1, -1, 1, 0, 0, 0, 0);
#if (defined(USE_DYNAREC) && defined(USE_NEW_DYNAREC))
codegen_flags_changed = 0;
#endif
return 0;
}
static int
opPOPF(uint32_t fetchdat)
{
uint16_t tempw;
if ((cpu_state.eflags & VM_FLAG) && (IOPL < 3)) {
if (cr4 & CR4_VME) {
uint32_t old_esp = ESP;
tempw = POP_W();
if (cpu_state.abrt) {
ESP = old_esp;
return 1;
}
if ((tempw & T_FLAG) || ((tempw & I_FLAG) && (cpu_state.eflags & VIP_FLAG))) {
ESP = old_esp;
x86gpf(NULL, 0);
return 1;
}
if (tempw & I_FLAG)
cpu_state.eflags |= VIF_FLAG;
else
cpu_state.eflags &= ~VIF_FLAG;
cpu_state.flags = (cpu_state.flags & 0x3200) | (tempw & 0x4dd5) | 2;
} else {
x86gpf(NULL, 0);
return 1;
}
} else {
tempw = POP_W();
if (cpu_state.abrt)
return 1;
if (!(CPL) || !(msw & 1))
cpu_state.flags = (tempw & 0x7fd5) | 2;
else if (IOPLp)
cpu_state.flags = (cpu_state.flags & 0x3000) | (tempw & 0x4fd5) | 2;
else
cpu_state.flags = (cpu_state.flags & 0x3200) | (tempw & 0x4dd5) | 2;
}
flags_extract();
rf_flag_no_clear = 1;
CLOCK_CYCLES(5);
PREFETCH_RUN(5, 1, -1, 1, 0, 0, 0, 0);
#if (defined(USE_DYNAREC) && defined(USE_NEW_DYNAREC))
codegen_flags_changed = 0;
#endif
return 0;
}
static int
opPOPFD(uint32_t fetchdat)
{
uint32_t templ;
if ((cpu_state.eflags & VM_FLAG) && (IOPL < 3)) {
x86gpf(NULL, 0);
return 1;
}
templ = POP_L();
if (cpu_state.abrt)
return 1;
if (!(CPL) || !(msw & 1))
cpu_state.flags = (templ & 0x7fd5) | 2;
else if (IOPLp)
cpu_state.flags = (cpu_state.flags & 0x3000) | (templ & 0x4fd5) | 2;
else
cpu_state.flags = (cpu_state.flags & 0x3200) | (templ & 0x4dd5) | 2;
templ &= (is486 || isibm486) ? 0x3c0000 : 0;
templ |= ((cpu_state.eflags & 3) << 16);
if (cpu_CR4_mask & CR4_VME)
cpu_state.eflags = (templ >> 16) & 0x3f;
else if (CPUID)
cpu_state.eflags = (templ >> 16) & 0x27;
else if (is486 || isibm486)
cpu_state.eflags = (templ >> 16) & 7;
else
cpu_state.eflags = (templ >> 16) & 3;
flags_extract();
rf_flag_no_clear = 1;
CLOCK_CYCLES(5);
PREFETCH_RUN(5, 1, -1, 0, 1, 0, 0, 0);
#if (defined(USE_DYNAREC) && defined(USE_NEW_DYNAREC))
codegen_flags_changed = 0;
#endif
return 0;
}

32
src/cpu/x86_ops_mov_ctrl.h
View File

@@ -87,12 +87,6 @@ opMOV_r_DRx_a16(uint32_t fetchdat)
return 1; return 1;
} }
fetch_ea_16(fetchdat); fetch_ea_16(fetchdat);
if (cpu_reg == 4 || cpu_reg == 5) {
if (cr4 & 0x8)
x86illegal();
else
cpu_reg += 2;
}
cpu_state.regs[cpu_rm].l = dr[cpu_reg] | (cpu_reg == 6 ? 0xffff0ff0u : 0); cpu_state.regs[cpu_rm].l = dr[cpu_reg] | (cpu_reg == 6 ? 0xffff0ff0u : 0);
CLOCK_CYCLES(6); CLOCK_CYCLES(6);
PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 0); PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 0);
@@ -106,12 +100,6 @@ opMOV_r_DRx_a32(uint32_t fetchdat)
return 1; return 1;
} }
fetch_ea_32(fetchdat); fetch_ea_32(fetchdat);
if (cpu_reg == 4 || cpu_reg == 5) {
if (cr4 & 0x8)
x86illegal();
else
cpu_reg += 2;
}
cpu_state.regs[cpu_rm].l = dr[cpu_reg] | (cpu_reg == 6 ? 0xffff0ff0u : 0); cpu_state.regs[cpu_rm].l = dr[cpu_reg] | (cpu_reg == 6 ? 0xffff0ff0u : 0);
CLOCK_CYCLES(6); CLOCK_CYCLES(6);
PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 1); PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 1);
@@ -240,23 +228,10 @@ opMOV_DRx_r_a16(uint32_t fetchdat)
x86gpf(NULL, 0); x86gpf(NULL, 0);
return 1; return 1;
} }
if ((dr[6] & 0x2000) && !(cpu_state.eflags & RF_FLAG)) {
dr[7] |= 0x2000;
dr[6] &= ~0x2000;
x86gen();
return 1;
}
fetch_ea_16(fetchdat); fetch_ea_16(fetchdat);
if (cpu_reg == 4 || cpu_reg == 5) {
if (cr4 & 0x8)
x86illegal();
else
cpu_reg += 2;
}
dr[cpu_reg] = cpu_state.regs[cpu_rm].l; dr[cpu_reg] = cpu_state.regs[cpu_rm].l;
CLOCK_CYCLES(6); CLOCK_CYCLES(6);
PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 0); PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 0);
CPU_BLOCK_END();
return 0; return 0;
} }
static int static int
@@ -267,16 +242,9 @@ opMOV_DRx_r_a32(uint32_t fetchdat)
return 1; return 1;
} }
fetch_ea_16(fetchdat); fetch_ea_16(fetchdat);
if (cpu_reg == 4 || cpu_reg == 5) {
if (cr4 & 0x8)
x86illegal();
else
cpu_reg += 2;
}
dr[cpu_reg] = cpu_state.regs[cpu_rm].l; dr[cpu_reg] = cpu_state.regs[cpu_rm].l;
CLOCK_CYCLES(6); CLOCK_CYCLES(6);
PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 1); PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 1);
CPU_BLOCK_END();
return 0; return 0;
} }

414
src/cpu/x86_ops_mov_ctrl_2386.h Normal file
View File

@@ -0,0 +1,414 @@
static int
opMOV_r_CRx_a16(uint32_t fetchdat)
{
if ((CPL || (cpu_state.eflags & VM_FLAG)) && (cr0 & 1)) {
x86gpf(NULL, 0);
return 1;
}
fetch_ea_16(fetchdat);
switch (cpu_reg) {
case 0:
cpu_state.regs[cpu_rm].l = cr0;
if (is486 || isibm486)
cpu_state.regs[cpu_rm].l |= 0x10; /*ET hardwired on 486*/
else {
if (is386)
cpu_state.regs[cpu_rm].l |= 0x7fffffe0;
else
cpu_state.regs[cpu_rm].l |= 0x7ffffff0;
}
break;
case 2:
cpu_state.regs[cpu_rm].l = cr2;
break;
case 3:
cpu_state.regs[cpu_rm].l = cr3;
break;
case 4:
if (cpu_has_feature(CPU_FEATURE_CR4)) {
cpu_state.regs[cpu_rm].l = cr4;
break;
}
default:
cpu_state.pc = cpu_state.oldpc;
x86illegal();
break;
}
CLOCK_CYCLES(6);
PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 0);
return 0;
}
static int
opMOV_r_CRx_a32(uint32_t fetchdat)
{
if ((CPL || (cpu_state.eflags & VM_FLAG)) && (cr0 & 1)) {
x86gpf(NULL, 0);
return 1;
}
fetch_ea_32(fetchdat);
switch (cpu_reg) {
case 0:
cpu_state.regs[cpu_rm].l = cr0;
if (is486 || isibm486)
cpu_state.regs[cpu_rm].l |= 0x10; /*ET hardwired on 486*/
else {
if (is386)
cpu_state.regs[cpu_rm].l |= 0x7fffffe0;
else
cpu_state.regs[cpu_rm].l |= 0x7ffffff0;
}
break;
case 2:
cpu_state.regs[cpu_rm].l = cr2;
break;
case 3:
cpu_state.regs[cpu_rm].l = cr3;
break;
case 4:
if (cpu_has_feature(CPU_FEATURE_CR4)) {
cpu_state.regs[cpu_rm].l = cr4;
break;
}
default:
cpu_state.pc = cpu_state.oldpc;
x86illegal();
break;
}
CLOCK_CYCLES(6);
PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 1);
return 0;
}
static int
opMOV_r_DRx_a16(uint32_t fetchdat)
{
if ((CPL || (cpu_state.eflags & VM_FLAG)) && (cr0 & 1)) {
x86gpf(NULL, 0);
return 1;
}
fetch_ea_16(fetchdat);
if (cpu_reg == 4 || cpu_reg == 5) {
if (cr4 & 0x8)
x86illegal();
else
cpu_reg += 2;
}
cpu_state.regs[cpu_rm].l = dr[cpu_reg] | (cpu_reg == 6 ? 0xffff0ff0u : 0);
CLOCK_CYCLES(6);
PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 0);
return 0;
}
static int
opMOV_r_DRx_a32(uint32_t fetchdat)
{
if ((CPL || (cpu_state.eflags & VM_FLAG)) && (cr0 & 1)) {
x86gpf(NULL, 0);
return 1;
}
fetch_ea_32(fetchdat);
if (cpu_reg == 4 || cpu_reg == 5) {
if (cr4 & 0x8)
x86illegal();
else
cpu_reg += 2;
}
cpu_state.regs[cpu_rm].l = dr[cpu_reg] | (cpu_reg == 6 ? 0xffff0ff0u : 0);
CLOCK_CYCLES(6);
PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 1);
return 0;
}
static int
opMOV_CRx_r_a16(uint32_t fetchdat)
{
uint32_t old_cr0 = cr0;
if ((CPL || (cpu_state.eflags & VM_FLAG)) && (cr0 & 1)) {
x86gpf(NULL, 0);
return 1;
}
fetch_ea_16(fetchdat);
switch (cpu_reg) {
case 0:
if ((cpu_state.regs[cpu_rm].l ^ cr0) & 0x80000001)
flushmmucache();
/* Make sure CPL = 0 when switching from real mode to protected mode. */
if ((cpu_state.regs[cpu_rm].l & 0x01) && !(cr0 & 0x01))
cpu_state.seg_cs.access &= 0x9f;
cr0 = cpu_state.regs[cpu_rm].l;
if (cpu_16bitbus)
cr0 |= 0x10;
if (!(cr0 & 0x80000000))
mmu_perm = 4;
if (hascache && !(cr0 & (1 << 30)))
cpu_cache_int_enabled = 1;
else
cpu_cache_int_enabled = 0;
if (hascache && ((cr0 ^ old_cr0) & (1 << 30)))
cpu_update_waitstates();
if (cr0 & 1)
cpu_cur_status |= CPU_STATUS_PMODE;
else
cpu_cur_status &= ~CPU_STATUS_PMODE;
break;
case 2:
cr2 = cpu_state.regs[cpu_rm].l;
break;
case 3:
cr3 = cpu_state.regs[cpu_rm].l;
flushmmucache();
break;
case 4:
if (cpu_has_feature(CPU_FEATURE_CR4)) {
if (((cpu_state.regs[cpu_rm].l ^ cr4) & cpu_CR4_mask) & (CR4_PAE | CR4_PGE))
flushmmucache();
cr4 = cpu_state.regs[cpu_rm].l & cpu_CR4_mask;
break;
}
default:
cpu_state.pc = cpu_state.oldpc;
x86illegal();
break;
}
CLOCK_CYCLES(10);
PREFETCH_RUN(10, 2, rmdat, 0, 0, 0, 0, 0);
return 0;
}
static int
opMOV_CRx_r_a32(uint32_t fetchdat)
{
uint32_t old_cr0 = cr0;
if ((CPL || (cpu_state.eflags & VM_FLAG)) && (cr0 & 1)) {
x86gpf(NULL, 0);
return 1;
}
fetch_ea_32(fetchdat);
switch (cpu_reg) {
case 0:
if ((cpu_state.regs[cpu_rm].l ^ cr0) & 0x80000001)
flushmmucache();
/* Make sure CPL = 0 when switching from real mode to protected mode. */
if ((cpu_state.regs[cpu_rm].l & 0x01) && !(cr0 & 0x01))
cpu_state.seg_cs.access &= 0x9f;
cr0 = cpu_state.regs[cpu_rm].l;
if (cpu_16bitbus)
cr0 |= 0x10;
if (!(cr0 & 0x80000000))
mmu_perm = 4;
if (hascache && !(cr0 & (1 << 30)))
cpu_cache_int_enabled = 1;
else
cpu_cache_int_enabled = 0;
if (hascache && ((cr0 ^ old_cr0) & (1 << 30)))
cpu_update_waitstates();
if (cr0 & 1)
cpu_cur_status |= CPU_STATUS_PMODE;
else
cpu_cur_status &= ~CPU_STATUS_PMODE;
break;
case 2:
cr2 = cpu_state.regs[cpu_rm].l;
break;
case 3:
cr3 = cpu_state.regs[cpu_rm].l;
flushmmucache();
break;
case 4:
if (cpu_has_feature(CPU_FEATURE_CR4)) {
if (((cpu_state.regs[cpu_rm].l ^ cr4) & cpu_CR4_mask) & (CR4_PAE | CR4_PGE))
flushmmucache();
cr4 = cpu_state.regs[cpu_rm].l & cpu_CR4_mask;
break;
}
default:
cpu_state.pc = cpu_state.oldpc;
x86illegal();
break;
}
CLOCK_CYCLES(10);
PREFETCH_RUN(10, 2, rmdat, 0, 0, 0, 0, 1);
return 0;
}
static int
opMOV_DRx_r_a16(uint32_t fetchdat)
{
if ((CPL || (cpu_state.eflags & VM_FLAG)) && (cr0 & 1)) {
x86gpf(NULL, 0);
return 1;
}
if ((dr[6] & 0x2000) && !(cpu_state.eflags & RF_FLAG)) {
dr[7] |= 0x2000;
dr[6] &= ~0x2000;
x86gen();
return 1;
}
fetch_ea_16(fetchdat);
if (cpu_reg == 4 || cpu_reg == 5) {
if (cr4 & 0x8)
x86illegal();
else
cpu_reg += 2;
}
dr[cpu_reg] = cpu_state.regs[cpu_rm].l;
CLOCK_CYCLES(6);
PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 0);
CPU_BLOCK_END();
return 0;
}
static int
opMOV_DRx_r_a32(uint32_t fetchdat)
{
if ((CPL || (cpu_state.eflags & VM_FLAG)) && (cr0 & 1)) {
x86gpf(NULL, 0);
return 1;
}
fetch_ea_16(fetchdat);
if (cpu_reg == 4 || cpu_reg == 5) {
if (cr4 & 0x8)
x86illegal();
else
cpu_reg += 2;
}
dr[cpu_reg] = cpu_state.regs[cpu_rm].l;
CLOCK_CYCLES(6);
PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 1);
CPU_BLOCK_END();
return 0;
}
static void
opMOV_r_TRx(void)
{
#if 0
uint32_t base;
base = _tr[4] & 0xfffff800;
#endif
switch (cpu_reg) {
case 3:
#if 0
pclog("[R] %08X cache = %08X\n", base + cache_index, _tr[3]);
#endif
_tr[3] = *(uint32_t *) &(_cache[cache_index]);
cache_index = (cache_index + 4) & 0xf;
break;
}
cpu_state.regs[cpu_rm].l = _tr[cpu_reg];
CLOCK_CYCLES(6);
}
static int
opMOV_r_TRx_a16(uint32_t fetchdat)
{
if ((cpu_s->cpu_type == CPU_PENTIUM) || ((CPL || (cpu_state.eflags & VM_FLAG)) && (cr0 & 1))) {
x86gpf(NULL, 0);
return 1;
}
fetch_ea_16(fetchdat);
opMOV_r_TRx();
PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 0);
return 0;
}
static int
opMOV_r_TRx_a32(uint32_t fetchdat)
{
if ((cpu_s->cpu_type == CPU_PENTIUM) || ((CPL || (cpu_state.eflags & VM_FLAG)) && (cr0 & 1))) {
x86gpf(NULL, 0);
return 1;
}
fetch_ea_32(fetchdat);
opMOV_r_TRx();
PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 1);
return 0;
}
static void
opMOV_TRx_r(void)
{
uint32_t base;
int i;
int ctl;
_tr[cpu_reg] = cpu_state.regs[cpu_rm].l;
base = _tr[4] & 0xfffff800;
ctl = _tr[5] & 3;
switch (cpu_reg) {
case 3:
#if 0
pclog("[W] %08X cache = %08X\n", base + cache_index, _tr[3]);
#endif
*(uint32_t *) &(_cache[cache_index]) = _tr[3];
cache_index = (cache_index + 4) & 0xf;
break;
case 4:
#if 0
if (!(cr0 & 1) && !(_tr[5] & (1 << 19)))
pclog("TAG = %08X, DEST = %08X\n", base, base + cache_index - 16);
#endif
break;
case 5:
#if 0
pclog("[16] EXT = %i (%i), SET = %04X\n", !!(_tr[5] & (1 << 19)), _tr[5] & 0x03, _tr[5] & 0x7f0);
#endif
if (!(_tr[5] & (1 << 19))) {
switch (ctl) {
case 0:
#if 0
pclog(" Cache fill or read...\n", base);
#endif
break;
case 1:
base += (_tr[5] & 0x7f0);
#if 0
pclog(" Writing 16 bytes to %08X...\n", base);
#endif
for (i = 0; i < 16; i += 4)
mem_writel_phys(base + i, *(uint32_t *) &(_cache[i]));
break;
case 2:
base += (_tr[5] & 0x7f0);
#if 0
pclog(" Reading 16 bytes from %08X...\n", base);
#endif
for (i = 0; i < 16; i += 4)
*(uint32_t *) &(_cache[i]) = mem_readl_phys(base + i);
break;
case 3:
#if 0
pclog(" Cache invalidate/flush...\n", base);
#endif
break;
}
}
break;
}
CLOCK_CYCLES(6);
}
static int
opMOV_TRx_r_a16(uint32_t fetchdat)
{
if ((cpu_s->cpu_type == CPU_PENTIUM) || ((CPL || (cpu_state.eflags & VM_FLAG)) && (cr0 & 1))) {
x86gpf(NULL, 0);
return 1;
}
fetch_ea_16(fetchdat);
opMOV_TRx_r();
PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 0);
return 0;
}
static int
opMOV_TRx_r_a32(uint32_t fetchdat)
{
if ((cpu_s->cpu_type == CPU_PENTIUM) || ((CPL || (cpu_state.eflags & VM_FLAG)) && (cr0 & 1))) {
x86gpf(NULL, 0);
return 1;
}
fetch_ea_32(fetchdat);
opMOV_TRx_r();
PREFETCH_RUN(6, 2, rmdat, 0, 0, 0, 0, 1);
return 0;
}

4
src/cpu/x86_ops_ret.h
View File

@@ -135,7 +135,6 @@ opIRET_186(uint32_t fetchdat)
} }
flags_extract(); flags_extract();
nmi_enable = 1; nmi_enable = 1;
rf_flag_no_clear = 1;
CPU_BLOCK_END(); CPU_BLOCK_END();
PREFETCH_RUN(cycles_old - cycles, 1, -1, 2, 0, 0, 0, 0); PREFETCH_RUN(cycles_old - cycles, 1, -1, 2, 0, 0, 0, 0);
@@ -176,7 +175,6 @@ opIRET_286(uint32_t fetchdat)
} }
flags_extract(); flags_extract();
nmi_enable = 1; nmi_enable = 1;
rf_flag_no_clear = 1;
CPU_BLOCK_END(); CPU_BLOCK_END();
PREFETCH_RUN(cycles_old - cycles, 1, -1, 2, 0, 0, 0, 0); PREFETCH_RUN(cycles_old - cycles, 1, -1, 2, 0, 0, 0, 0);
@@ -245,7 +243,6 @@ opIRET(uint32_t fetchdat)
} }
flags_extract(); flags_extract();
nmi_enable = 1; nmi_enable = 1;
rf_flag_no_clear = 1;
CPU_BLOCK_END(); CPU_BLOCK_END();
PREFETCH_RUN(cycles_old - cycles, 1, -1, 2, 0, 0, 0, 0); PREFETCH_RUN(cycles_old - cycles, 1, -1, 2, 0, 0, 0, 0);
@@ -288,7 +285,6 @@ opIRETD(uint32_t fetchdat)
} }
flags_extract(); flags_extract();
nmi_enable = 1; nmi_enable = 1;
rf_flag_no_clear = 1;
CPU_BLOCK_END(); CPU_BLOCK_END();
PREFETCH_RUN(cycles_old - cycles, 1, -1, 0, 2, 0, 0, 1); PREFETCH_RUN(cycles_old - cycles, 1, -1, 0, 2, 0, 0, 1);

297
src/cpu/x86_ops_ret_2386.h Normal file
View File

@@ -0,0 +1,297 @@
#ifdef USE_NEW_DYNAREC
# define CPU_SET_OXPC
#else
# define CPU_SET_OXPC oxpc = cpu_state.pc;
#endif
#define RETF_a16(stack_offset) \
if ((msw & 1) && !(cpu_state.eflags & VM_FLAG)) { \
op_pmoderetf(0, stack_offset); \
return 1; \
} \
CPU_SET_OXPC \
if (stack32) { \
cpu_state.pc = readmemw(ss, ESP); \
op_loadcs(readmemw(ss, ESP + 2)); \
} else { \
cpu_state.pc = readmemw(ss, SP); \
op_loadcs(readmemw(ss, SP + 2)); \
} \
if (cpu_state.abrt) \
return 1; \
if (stack32) \
ESP += 4 + stack_offset; \
else \
SP += 4 + stack_offset; \
cycles -= timing_retf_rm;
#define RETF_a32(stack_offset) \
if ((msw & 1) && !(cpu_state.eflags & VM_FLAG)) { \
op_pmoderetf(1, stack_offset); \
return 1; \
} \
CPU_SET_OXPC \
if (stack32) { \
cpu_state.pc = readmeml(ss, ESP); \
op_loadcs(readmeml(ss, ESP + 4) & 0xffff); \
} else { \
cpu_state.pc = readmeml(ss, SP); \
op_loadcs(readmeml(ss, SP + 4) & 0xffff); \
} \
if (cpu_state.abrt) \
return 1; \
if (stack32) \
ESP += 8 + stack_offset; \
else \
SP += 8 + stack_offset; \
cycles -= timing_retf_rm;
static int
opRETF_a16(uint32_t fetchdat)
{
int cycles_old = cycles;
UN_USED(cycles_old);
CPU_BLOCK_END();
RETF_a16(0);
PREFETCH_RUN(cycles_old - cycles, 1, -1, 2, 0, 0, 0, 0);
PREFETCH_FLUSH();
return 0;
}
static int
opRETF_a32(uint32_t fetchdat)
{
int cycles_old = cycles;
UN_USED(cycles_old);
CPU_BLOCK_END();
RETF_a32(0);
PREFETCH_RUN(cycles_old - cycles, 1, -1, 0, 2, 0, 0, 1);
PREFETCH_FLUSH();
return 0;
}
static int
opRETF_a16_imm(uint32_t fetchdat)
{
uint16_t offset = getwordf();
int cycles_old = cycles;
UN_USED(cycles_old);
CPU_BLOCK_END();
RETF_a16(offset);
PREFETCH_RUN(cycles_old - cycles, 3, -1, 2, 0, 0, 0, 0);
PREFETCH_FLUSH();
return 0;
}
static int
opRETF_a32_imm(uint32_t fetchdat)
{
uint16_t offset = getwordf();
int cycles_old = cycles;
UN_USED(cycles_old);
CPU_BLOCK_END();
RETF_a32(offset);
PREFETCH_RUN(cycles_old - cycles, 3, -1, 0, 2, 0, 0, 1);
PREFETCH_FLUSH();
return 0;
}
static int
opIRET_186(uint32_t fetchdat)
{
int cycles_old = cycles;
UN_USED(cycles_old);
if ((cr0 & 1) && (cpu_state.eflags & VM_FLAG) && (IOPL != 3)) {
x86gpf(NULL, 0);
return 1;
}
if (msw & 1) {
optype = IRET;
op_pmodeiret(0);
optype = 0;
} else {
uint16_t new_cs;
CPU_SET_OXPC
if (stack32) {
cpu_state.pc = readmemw(ss, ESP);
new_cs = readmemw(ss, ESP + 2);
cpu_state.flags = (cpu_state.flags & 0x7000) | (readmemw(ss, ESP + 4) & 0xffd5) | 2;
ESP += 6;
} else {
cpu_state.pc = readmemw(ss, SP);
new_cs = readmemw(ss, ((SP + 2) & 0xffff));
cpu_state.flags = (cpu_state.flags & 0x7000) | (readmemw(ss, ((SP + 4) & 0xffff)) & 0x0fd5) | 2;
SP += 6;
}
op_loadcs(new_cs);
cycles -= timing_iret_rm;
}
flags_extract();
nmi_enable = 1;
rf_flag_no_clear = 1;
CPU_BLOCK_END();
PREFETCH_RUN(cycles_old - cycles, 1, -1, 2, 0, 0, 0, 0);
PREFETCH_FLUSH();
return cpu_state.abrt;
}
static int
opIRET_286(uint32_t fetchdat)
{
int cycles_old = cycles;
UN_USED(cycles_old);
if ((cr0 & 1) && (cpu_state.eflags & VM_FLAG) && (IOPL != 3)) {
x86gpf(NULL, 0);
return 1;
}
if (msw & 1) {
optype = IRET;
op_pmodeiret(0);
optype = 0;
} else {
uint16_t new_cs;
CPU_SET_OXPC
if (stack32) {
cpu_state.pc = readmemw(ss, ESP);
new_cs = readmemw(ss, ESP + 2);
cpu_state.flags = (cpu_state.flags & 0x7000) | (readmemw(ss, ESP + 4) & 0xffd5) | 2;
ESP += 6;
} else {
cpu_state.pc = readmemw(ss, SP);
new_cs = readmemw(ss, ((SP + 2) & 0xffff));
cpu_state.flags = (cpu_state.flags & 0x7000) | (readmemw(ss, ((SP + 4) & 0xffff)) & 0x0fd5) | 2;
SP += 6;
}
op_loadcs(new_cs);
cycles -= timing_iret_rm;
}
flags_extract();
nmi_enable = 1;
rf_flag_no_clear = 1;
CPU_BLOCK_END();
PREFETCH_RUN(cycles_old - cycles, 1, -1, 2, 0, 0, 0, 0);
PREFETCH_FLUSH();
return cpu_state.abrt;
}
static int
opIRET(uint32_t fetchdat)
{
int cycles_old = cycles;
UN_USED(cycles_old);
if ((cr0 & 1) && (cpu_state.eflags & VM_FLAG) && (IOPL != 3)) {
if (cr4 & CR4_VME) {
uint16_t new_pc;
uint16_t new_cs;
uint16_t new_flags;
new_pc = readmemw(ss, SP);
new_cs = readmemw(ss, ((SP + 2) & 0xffff));
new_flags = readmemw(ss, ((SP + 4) & 0xffff));
if (cpu_state.abrt)
return 1;
if ((new_flags & T_FLAG) || ((new_flags & I_FLAG) && (cpu_state.eflags & VIP_FLAG))) {
x86gpf(NULL, 0);
return 1;
}
SP += 6;
if (new_flags & I_FLAG)
cpu_state.eflags |= VIF_FLAG;
else
cpu_state.eflags &= ~VIF_FLAG;
cpu_state.flags = (cpu_state.flags & 0x3300) | (new_flags & 0x4cd5) | 2;
op_loadcs(new_cs);
cpu_state.pc = new_pc;
cycles -= timing_iret_rm;
} else {
x86gpf_expected(NULL, 0);
return 1;
}
} else {
if (msw & 1) {
optype = IRET;
op_pmodeiret(0);
optype = 0;
} else {
uint16_t new_cs;
CPU_SET_OXPC
if (stack32) {
cpu_state.pc = readmemw(ss, ESP);
new_cs = readmemw(ss, ESP + 2);
cpu_state.flags = (readmemw(ss, ESP + 4) & 0xffd5) | 2;
ESP += 6;
} else {
cpu_state.pc = readmemw(ss, SP);
new_cs = readmemw(ss, ((SP + 2) & 0xffff));
cpu_state.flags = (readmemw(ss, ((SP + 4) & 0xffff)) & 0xffd5) | 2;
SP += 6;
}
op_loadcs(new_cs);
cycles -= timing_iret_rm;
}
}
flags_extract();
nmi_enable = 1;
rf_flag_no_clear = 1;
CPU_BLOCK_END();
PREFETCH_RUN(cycles_old - cycles, 1, -1, 2, 0, 0, 0, 0);
PREFETCH_FLUSH();
return cpu_state.abrt;
}
static int
opIRETD(uint32_t fetchdat)
{
int cycles_old = cycles;
UN_USED(cycles_old);
if ((cr0 & 1) && (cpu_state.eflags & VM_FLAG) && (IOPL != 3)) {
x86gpf_expected(NULL, 0);
return 1;
}
if (msw & 1) {
optype = IRET;
op_pmodeiret(1);
optype = 0;
} else {
uint16_t new_cs;
CPU_SET_OXPC
if (stack32) {
cpu_state.pc = readmeml(ss, ESP);
new_cs = readmemw(ss, ESP + 4);
cpu_state.flags = (readmemw(ss, ESP + 8) & 0xffd5) | 2;
cpu_state.eflags = readmemw(ss, ESP + 10);
ESP += 12;
} else {
cpu_state.pc = readmeml(ss, SP);
new_cs = readmemw(ss, ((SP + 4) & 0xffff));
cpu_state.flags = (readmemw(ss, (SP + 8) & 0xffff) & 0xffd5) | 2;
cpu_state.eflags = readmemw(ss, (SP + 10) & 0xffff);
SP += 12;
}
op_loadcs(new_cs);
cycles -= timing_iret_rm;
}
flags_extract();
nmi_enable = 1;
rf_flag_no_clear = 1;
CPU_BLOCK_END();
PREFETCH_RUN(cycles_old - cycles, 1, -1, 0, 2, 0, 0, 1);
PREFETCH_FLUSH();
return cpu_state.abrt;
}

74
src/mem/mem.c
View File

@@ -161,54 +161,6 @@ mem_log(const char *fmt, ...)
# define mem_log(fmt, ...) # define mem_log(fmt, ...)
#endif #endif
/* Set trap for data address breakpoints. */
void
mem_debug_check_addr(uint32_t addr, int write)
{
int i = 0;
int set_trap = 0;
if (!(dr[7] & 0xFF))
return;
for (i = 0; i < 4; i++) {
uint32_t dr_addr = dr[i];
int breakpoint_enabled = !!(dr[7] & (0x3 << (2 * i)));
int len_type_pair = ((dr[7] >> 16) & (0xF << (4 * i))) >> (4 * i);
if (!breakpoint_enabled)
continue;
if (!write && (len_type_pair & 3) != 3)
continue;
if ((len_type_pair & 3) != 1)
continue;
switch ((len_type_pair >> 2) & 3)
{
case 0x00:
if (dr_addr == addr) {
set_trap = 1;
dr[6] |= (1 << i);
}
break;
case 0x01:
if ((dr_addr & ~1) == addr || ((dr_addr & ~1) + 1) == (addr + 1)) {
set_trap = 1;
dr[6] |= (1 << i);
}
break;
case 0x03:
dr_addr &= ~3;
if (addr >= dr_addr && addr < (dr_addr + 4)) {
set_trap = 1;
dr[6] |= (1 << i);
}
break;
}
}
if (set_trap)
trap |= 4;
}
int int
mem_addr_is_ram(uint32_t addr) mem_addr_is_ram(uint32_t addr)
{ {
@@ -838,7 +790,6 @@ readmembl(uint32_t addr)
uint64_t a; uint64_t a;
GDBSTUB_MEM_ACCESS(addr, GDBSTUB_MEM_READ, 1); GDBSTUB_MEM_ACCESS(addr, GDBSTUB_MEM_READ, 1);
mem_debug_check_addr(addr, 0);
addr64 = (uint64_t) addr; addr64 = (uint64_t) addr;
mem_logical_addr = addr; mem_logical_addr = addr;
@@ -868,7 +819,6 @@ writemembl(uint32_t addr, uint8_t val)
uint64_t a; uint64_t a;
GDBSTUB_MEM_ACCESS(addr, GDBSTUB_MEM_WRITE, 1); GDBSTUB_MEM_ACCESS(addr, GDBSTUB_MEM_WRITE, 1);
mem_debug_check_addr(addr, 1);
addr64 = (uint64_t) addr; addr64 = (uint64_t) addr;
mem_logical_addr = addr; mem_logical_addr = addr;
@@ -955,8 +905,6 @@ readmemwl(uint32_t addr)
addr64a[0] = addr; addr64a[0] = addr;
addr64a[1] = addr + 1; addr64a[1] = addr + 1;
mem_debug_check_addr(addr, 0);
mem_debug_check_addr(addr + 1, 0);
GDBSTUB_MEM_ACCESS_FAST(addr64a, GDBSTUB_MEM_READ, 2); GDBSTUB_MEM_ACCESS_FAST(addr64a, GDBSTUB_MEM_READ, 2);
mem_logical_addr = addr; mem_logical_addr = addr;
@@ -1015,8 +963,6 @@ writememwl(uint32_t addr, uint16_t val)
addr64a[0] = addr; addr64a[0] = addr;
addr64a[1] = addr + 1; addr64a[1] = addr + 1;
mem_debug_check_addr(addr, 1);
mem_debug_check_addr(addr + 1, 1);
GDBSTUB_MEM_ACCESS_FAST(addr64a, GDBSTUB_MEM_WRITE, 2); GDBSTUB_MEM_ACCESS_FAST(addr64a, GDBSTUB_MEM_WRITE, 2);
mem_logical_addr = addr; mem_logical_addr = addr;
@@ -1193,10 +1139,8 @@ readmemll(uint32_t addr)
int i; int i;
uint64_t a = 0x0000000000000000ULL; uint64_t a = 0x0000000000000000ULL;
for (i = 0; i < 4; i++) { for (i = 0; i < 4; i++)
addr64a[i] = (uint64_t) (addr + i); addr64a[i] = (uint64_t) (addr + i);
mem_debug_check_addr(addr + i, 0);
}
GDBSTUB_MEM_ACCESS_FAST(addr64a, GDBSTUB_MEM_READ, 4); GDBSTUB_MEM_ACCESS_FAST(addr64a, GDBSTUB_MEM_READ, 4);
mem_logical_addr = addr; mem_logical_addr = addr;
@@ -1269,10 +1213,8 @@ writememll(uint32_t addr, uint32_t val)
int i; int i;
uint64_t a = 0x0000000000000000ULL; uint64_t a = 0x0000000000000000ULL;
for (i = 0; i < 4; i++) { for (i = 0; i < 4; i++)
addr64a[i] = (uint64_t) (addr + i); addr64a[i] = (uint64_t) (addr + i);
mem_debug_check_addr(addr + i, 1);
}
GDBSTUB_MEM_ACCESS_FAST(addr64a, GDBSTUB_MEM_WRITE, 4); GDBSTUB_MEM_ACCESS_FAST(addr64a, GDBSTUB_MEM_WRITE, 4);
mem_logical_addr = addr; mem_logical_addr = addr;
@@ -1475,10 +1417,8 @@ readmemql(uint32_t addr)
int i; int i;
uint64_t a = 0x0000000000000000ULL; uint64_t a = 0x0000000000000000ULL;
for (i = 0; i < 8; i++) { for (i = 0; i < 8; i++)
addr64a[i] = (uint64_t) (addr + i); addr64a[i] = (uint64_t) (addr + i);
mem_debug_check_addr(addr + i, 0);
}
GDBSTUB_MEM_ACCESS_FAST(addr64a, GDBSTUB_MEM_READ, 8); GDBSTUB_MEM_ACCESS_FAST(addr64a, GDBSTUB_MEM_READ, 8);
mem_logical_addr = addr; mem_logical_addr = addr;
@@ -1543,10 +1483,8 @@ writememql(uint32_t addr, uint64_t val)
int i; int i;
uint64_t a = 0x0000000000000000ULL; uint64_t a = 0x0000000000000000ULL;
for (i = 0; i < 8; i++) { for (i = 0; i < 8; i++)
addr64a[i] = (uint64_t) (addr + i); addr64a[i] = (uint64_t) (addr + i);
mem_debug_check_addr(addr + i, 1);
}
GDBSTUB_MEM_ACCESS_FAST(addr64a, GDBSTUB_MEM_WRITE, 8); GDBSTUB_MEM_ACCESS_FAST(addr64a, GDBSTUB_MEM_WRITE, 8);
mem_logical_addr = addr; mem_logical_addr = addr;
@@ -1644,10 +1582,8 @@ do_mmutranslate(uint32_t addr, uint32_t *a64, int num, int write)
uint32_t last_addr = addr + (num - 1); uint32_t last_addr = addr + (num - 1);
uint64_t a = 0x0000000000000000ULL; uint64_t a = 0x0000000000000000ULL;
mem_debug_check_addr(addr, write); for (i = 0; i < num; i++)
for (i = 0; i < num; i++) {
a64[i] = (uint64_t) addr; a64[i] = (uint64_t) addr;
}
for (i = 0; i < num; i++) { for (i = 0; i < num; i++) {
if (cr0 >> 31) { if (cr0 >> 31) {

48
src/mem/mmu_2386.c
View File

@@ -39,6 +39,54 @@
#include <86box/rom.h> #include <86box/rom.h>
#include <86box/gdbstub.h> #include <86box/gdbstub.h>
/* Set trap for data address breakpoints. */
void
mem_debug_check_addr(uint32_t addr, int write)
{
int i = 0;
int set_trap = 0;
if (!(dr[7] & 0xFF))
return;
for (i = 0; i < 4; i++) {
uint32_t dr_addr = dr[i];
int breakpoint_enabled = !!(dr[7] & (0x3 << (2 * i)));
int len_type_pair = ((dr[7] >> 16) & (0xF << (4 * i))) >> (4 * i);
if (!breakpoint_enabled)
continue;
if (!write && (len_type_pair & 3) != 3)
continue;
if ((len_type_pair & 3) != 1)
continue;
switch ((len_type_pair >> 2) & 3)
{
case 0x00:
if (dr_addr == addr) {
set_trap = 1;
dr[6] |= (1 << i);
}
break;
case 0x01:
if ((dr_addr & ~1) == addr || ((dr_addr & ~1) + 1) == (addr + 1)) {
set_trap = 1;
dr[6] |= (1 << i);
}
break;
case 0x03:
dr_addr &= ~3;
if (addr >= dr_addr && addr < (dr_addr + 4)) {
set_trap = 1;
dr[6] |= (1 << i);
}
break;
}
}
if (set_trap)
trap |= 4;
}
uint8_t uint8_t
mem_readb_map(uint32_t addr) mem_readb_map(uint32_t addr)
{ {