From 5a94c78cbbf9070e8bec5cfd790762b8e0c35633 Mon Sep 17 00:00:00 2001 From: SarahW Date: Sat, 5 Sep 2020 20:51:50 +0100 Subject: [PATCH] Split up exec386_dynarec() a bit. --- src/386_dynarec.c | 675 ++++++++++++++++++++++------------------------ 1 file changed, 325 insertions(+), 350 deletions(-) diff --git a/src/386_dynarec.c b/src/386_dynarec.c index 82f1093..d52efde 100644 --- a/src/386_dynarec.c +++ b/src/386_dynarec.c @@ -240,11 +240,331 @@ static void prefetch_flush() int cpu_end_block_after_ins = 0; + +static inline void exec_interpreter(void) +{ + cpu_block_end = 0; + x86_was_reset = 0; +// if (output) pclog("Interpret block at %04x:%04x %04x %04x %04x %04x %04x %04x %04x\n", CS, pc, AX, BX, CX, DX, SI, DI, SP); + while (!cpu_block_end) + { + cpu_state.oldpc = cpu_state.pc; + cpu_state.op32 = use32; + + cpu_state.ea_seg = &cpu_state.seg_ds; + cpu_state.ssegs = 0; + + fetchdat = fastreadl(cs + cpu_state.pc); + + if (!cpu_state.abrt) + { + uint8_t opcode = fetchdat & 0xFF; + fetchdat >>= 8; + trap = cpu_state.flags & T_FLAG; + +// if (output == 3) +// pclog("int %04X(%06X):%04X : %08X %08X %08X %08X %04X %04X %04X(%08X) %04X %04X %04X(%08X) %08X %08X %08X SP=%04X:%08X %02X %04X %i %08X %08X %i %i %02X %02X %02X %02X %02X %f %02X%02X %02X%02X\n",CS,cs,pc,EAX,EBX,ECX,EDX,CS,DS,ES,es,FS,GS,SS,ss,EDI,ESI,EBP,SS,ESP,opcode,flags,ins,0, ldt.base, CPL, stack32, pic.pend, pic.mask, pic.mask2, pic2.pend, pic2.mask, pit.c[0], ram[0x8f13f], ram[0x8f13e], ram[0x8f141], ram[0x8f140]); + + cpu_state.pc++; + x86_opcodes[(opcode | cpu_state.op32) & 0x3ff](fetchdat); + } + + if (((cs + cpu_state.pc) >> 12) != pccache) + CPU_BLOCK_END(); + + if (cpu_state.abrt) + CPU_BLOCK_END(); + if (trap) + CPU_BLOCK_END(); + if (nmi && nmi_enable && nmi_mask) + CPU_BLOCK_END(); + if (cpu_end_block_after_ins) + { + cpu_end_block_after_ins--; + if (!cpu_end_block_after_ins) + CPU_BLOCK_END(); + } + + ins++; + insc++; + } + + if (trap) + { + trap = 0; + cpu_state.oldpc = cpu_state.pc; + x86_int(1); + } + + cpu_end_block_after_ins = 0; +} + +static inline void exec_recompiler(void) +{ + uint32_t phys_addr = get_phys(cs+cpu_state.pc); + int hash = HASH(phys_addr); + codeblock_t *block = &codeblock[codeblock_hash[hash]]; + int valid_block = 0; + + if (!cpu_state.abrt) + { + page_t *page = &pages[phys_addr >> 12]; + + /*Block must match current CS, PC, code segment size, + and physical address. The physical address check will + also catch any page faults at this stage*/ + valid_block = (block->pc == cs + cpu_state.pc) && (block->_cs == cs) && + (block->phys == phys_addr) && !((block->status ^ cpu_cur_status) & CPU_STATUS_FLAGS) && + ((block->status & cpu_cur_status & CPU_STATUS_MASK) == (cpu_cur_status & CPU_STATUS_MASK)); + if (!valid_block) + { + uint64_t mask = (uint64_t)1 << ((phys_addr >> PAGE_MASK_SHIFT) & PAGE_MASK_MASK); + int byte_offset = (phys_addr >> PAGE_BYTE_MASK_SHIFT) & PAGE_BYTE_MASK_OFFSET_MASK; + uint64_t byte_mask = 1ull << (PAGE_BYTE_MASK_MASK & 0x3f); + + if ((page->code_present_mask & mask) || (page->byte_code_present_mask[byte_offset] & byte_mask)) + { + /*Walk page tree to see if we find the correct block*/ + codeblock_t *new_block = codeblock_tree_find(phys_addr, cs); + if (new_block) + { + valid_block = (new_block->pc == cs + cpu_state.pc) && (new_block->_cs == cs) && + (new_block->phys == phys_addr) && !((new_block->status ^ cpu_cur_status) & CPU_STATUS_FLAGS) && + ((new_block->status & cpu_cur_status & CPU_STATUS_MASK) == (cpu_cur_status & CPU_STATUS_MASK)); + if (valid_block) + { + block = new_block; + codeblock_hash[hash] = get_block_nr(block); + } + } + } + } + + if (valid_block && (block->page_mask & *block->dirty_mask)) + { + codegen_check_flush(page, page->dirty_mask, phys_addr); + if (block->pc == BLOCK_PC_INVALID) + valid_block = 0; + else if (block->flags & CODEBLOCK_IN_DIRTY_LIST) + block->flags &= ~CODEBLOCK_WAS_RECOMPILED; + } + if (valid_block && block->page_mask2) + { + /*We don't want the second page to cause a page + fault at this stage - that would break any + code crossing a page boundary where the first + page is present but the second isn't. Instead + allow the first page to be interpreted and for + the page fault to occur when the page boundary + is actually crossed.*/ + uint32_t phys_addr_2 = get_phys_noabrt(block->pc + ((block->flags & CODEBLOCK_BYTE_MASK) ? 0x40 : 0x400)); + page_t *page_2 = &pages[phys_addr_2 >> 12]; + if ((block->phys_2 ^ phys_addr_2) & ~0xfff) + valid_block = 0; + else if (block->page_mask2 & *block->dirty_mask2) + { + codegen_check_flush(page_2, page_2->dirty_mask, phys_addr_2); + if (block->pc == BLOCK_PC_INVALID) + valid_block = 0; + else if (block->flags & CODEBLOCK_IN_DIRTY_LIST) + block->flags &= ~CODEBLOCK_WAS_RECOMPILED; + } + } + if (valid_block && (block->flags & CODEBLOCK_IN_DIRTY_LIST)) + { + block->flags &= ~CODEBLOCK_WAS_RECOMPILED; + if (block->flags & CODEBLOCK_BYTE_MASK) + block->flags |= CODEBLOCK_NO_IMMEDIATES; + else + block->flags |= CODEBLOCK_BYTE_MASK; + } + if (valid_block && (block->flags & CODEBLOCK_WAS_RECOMPILED) && (block->flags & CODEBLOCK_STATIC_TOP) && block->TOP != (cpu_state.TOP & 7)) + { + /*FPU top-of-stack does not match the value this block was compiled + with, re-compile using dynamic top-of-stack*/ + block->flags &= ~(CODEBLOCK_STATIC_TOP | CODEBLOCK_WAS_RECOMPILED); + } + } + + if (valid_block && (block->flags & CODEBLOCK_WAS_RECOMPILED)) + { + void (*code)() = (void *)&block->data[BLOCK_START]; + +// if (output) pclog("Run block at %04x:%04x %04x %04x %04x %04x %04x %04x ESP=%08x %04x %08x %08x %016llx %08x\n", CS, pc, AX, BX, CX, DX, SI, DI, ESP, BP, get_phys(cs+pc), block->phys, block->page_mask, block->endpc); + + inrecomp=1; + code(); + inrecomp=0; + + cpu_recomp_blocks++; + } + else if (valid_block && !cpu_state.abrt) + { + uint32_t start_pc = cs+cpu_state.pc; + const int max_block_size = (block->flags & CODEBLOCK_BYTE_MASK) ? ((128 - 25) - (start_pc & 0x3f)) : 1000; + + cpu_block_end = 0; + x86_was_reset = 0; + + cpu_new_blocks++; + + codegen_block_start_recompile(block); + codegen_in_recompile = 1; + +// if (output) pclog("Recompile block at %04x:%04x %04x %04x %04x %04x %04x %04x ESP=%04x %04x %02x%02x:%02x%02x %02x%02x:%02x%02x %02x%02x:%02x%02x\n", CS, pc, AX, BX, CX, DX, SI, DI, ESP, BP, ram[0x116330+0x6df4+0xa+3], ram[0x116330+0x6df4+0xa+2], ram[0x116330+0x6df4+0xa+1], ram[0x116330+0x6df4+0xa+0], ram[0x11d136+3],ram[0x11d136+2],ram[0x11d136+1],ram[0x11d136+0], ram[(0x119abe)+0x3],ram[(0x119abe)+0x2],ram[(0x119abe)+0x1],ram[(0x119abe)+0x0]); + while (!cpu_block_end) + { + cpu_state.oldpc = cpu_state.pc; + cpu_state.op32 = use32; + + cpu_state.ea_seg = &cpu_state.seg_ds; + cpu_state.ssegs = 0; + + fetchdat = fastreadl(cs + cpu_state.pc); + + if (!cpu_state.abrt) + { + uint8_t opcode = fetchdat & 0xFF; + fetchdat >>= 8; + +// if (output == 3) +// pclog("%04X(%06X):%04X : %08X %08X %08X %08X %04X %04X %04X(%08X) %04X %04X %04X(%08X) %08X %08X %08X SP=%04X:%08X %02X %04X %i %08X %08X %i %i %02X %02X %02X %02X %02X %08x %08x\n",CS,cs,pc,EAX,EBX,ECX,EDX,CS,DS,ES,es,FS,GS,SS,ss,EDI,ESI,EBP,SS,ESP,opcode,flags,ins,0, ldt.base, CPL, stack32, pic.pend, pic.mask, pic.mask2, pic2.pend, pic2.mask, cs+pc, pccache); + + cpu_state.pc++; + + codegen_generate_call(opcode, x86_opcodes[(opcode | cpu_state.op32) & 0x3ff], fetchdat, cpu_state.pc, cpu_state.pc-1); + + x86_opcodes[(opcode | cpu_state.op32) & 0x3ff](fetchdat); + + if (x86_was_reset) + break; + } + + /*Cap source code at 4000 bytes per block; this + will prevent any block from spanning more than + 2 pages. In practice this limit will never be + hit, as host block size is only 2kB*/ + if (((cs+cpu_state.pc) - start_pc) >= max_block_size) + CPU_BLOCK_END(); + + if (cpu_state.flags & T_FLAG) + CPU_BLOCK_END(); + + if (nmi && nmi_enable && nmi_mask) + CPU_BLOCK_END(); + + if (cpu_end_block_after_ins) + { + cpu_end_block_after_ins--; + if (!cpu_end_block_after_ins) + CPU_BLOCK_END(); + } + + if (cpu_state.abrt) + { + codegen_block_remove(); + CPU_BLOCK_END(); + } + + ins++; + insc++; + } + cpu_end_block_after_ins = 0; + + if (!cpu_state.abrt && !x86_was_reset) + codegen_block_end_recompile(block); + + if (x86_was_reset) + codegen_reset(); + + codegen_in_recompile = 0; + } + else if (!cpu_state.abrt) + { + /*Mark block but do not recompile*/ + uint32_t start_pc = cs+cpu_state.pc; + const int max_block_size = (block->flags & CODEBLOCK_BYTE_MASK) ? ((128 - 25) - (start_pc & 0x3f)) : 1000; + + cpu_block_end = 0; + x86_was_reset = 0; + + codegen_block_init(phys_addr); + +// if (output) pclog("Recompile block at %04x:%04x %04x %04x %04x %04x %04x %04x ESP=%04x %04x %02x%02x:%02x%02x %02x%02x:%02x%02x %02x%02x:%02x%02x\n", CS, pc, AX, BX, CX, DX, SI, DI, ESP, BP, ram[0x116330+0x6df4+0xa+3], ram[0x116330+0x6df4+0xa+2], ram[0x116330+0x6df4+0xa+1], ram[0x116330+0x6df4+0xa+0], ram[0x11d136+3],ram[0x11d136+2],ram[0x11d136+1],ram[0x11d136+0], ram[(0x119abe)+0x3],ram[(0x119abe)+0x2],ram[(0x119abe)+0x1],ram[(0x119abe)+0x0]); + while (!cpu_block_end) + { + cpu_state.oldpc = cpu_state.pc; + cpu_state.op32 = use32; + + cpu_state.ea_seg = &cpu_state.seg_ds; + cpu_state.ssegs = 0; + + codegen_endpc = (cs + cpu_state.pc) + 8; + fetchdat = fastreadl(cs + cpu_state.pc); + + if (!cpu_state.abrt) + { + uint8_t opcode = fetchdat & 0xFF; + fetchdat >>= 8; + +// if (output == 3) +// pclog("%04X(%06X):%04X : %08X %08X %08X %08X %04X %04X %04X(%08X) %04X %04X %04X(%08X) %08X %08X %08X SP=%04X:%08X %02X %04X %i %08X %08X %i %i %02X %02X %02X %02X %02X %08x %08x\n",CS,cs,pc,EAX,EBX,ECX,EDX,CS,DS,ES,es,FS,GS,SS,ss,EDI,ESI,EBP,SS,ESP,opcode,flags,ins,0, ldt.base, CPL, stack32, pic.pend, pic.mask, pic.mask2, pic2.pend, pic2.mask, cs+pc, pccache); + + cpu_state.pc++; + + x86_opcodes[(opcode | cpu_state.op32) & 0x3ff](fetchdat); + + if (x86_was_reset) + break; + } + + /*Cap source code at 4000 bytes per block; this + will prevent any block from spanning more than + 2 pages. In practice this limit will never be + hit, as host block size is only 2kB*/ + if (((cs+cpu_state.pc) - start_pc) >= max_block_size) + CPU_BLOCK_END(); + + if (cpu_state.flags & T_FLAG) + CPU_BLOCK_END(); + + if (nmi && nmi_enable && nmi_mask) + CPU_BLOCK_END(); + + if (cpu_end_block_after_ins) + { + cpu_end_block_after_ins--; + if (!cpu_end_block_after_ins) + CPU_BLOCK_END(); + } + + if (cpu_state.abrt) + { + codegen_block_remove(); + CPU_BLOCK_END(); + } + + ins++; + insc++; + } + cpu_end_block_after_ins = 0; + + if (!cpu_state.abrt && !x86_was_reset) + codegen_block_end(); + + if (x86_was_reset) + codegen_reset(); + } + else + cpu_state.oldpc = cpu_state.pc; + +} + + static int cycles_main = 0; void exec386_dynarec(int cycs) { uint8_t temp; - uint32_t addr; int tempi; int cycdiff; int oldcyc; @@ -263,338 +583,9 @@ void exec386_dynarec(int cycs) oldcyc=cycles; // if (output && CACHE_ON()) pclog("Block %04x:%04x %04x:%08x\n", CS, pc, SS,ESP); if (!CACHE_ON()) /*Interpret block*/ - { - cpu_block_end = 0; - x86_was_reset = 0; -// if (output) pclog("Interpret block at %04x:%04x %04x %04x %04x %04x %04x %04x %04x\n", CS, pc, AX, BX, CX, DX, SI, DI, SP); - while (!cpu_block_end) - { - cpu_state.oldpc = cpu_state.pc; - cpu_state.op32 = use32; - - cpu_state.ea_seg = &cpu_state.seg_ds; - cpu_state.ssegs = 0; - - fetchdat = fastreadl(cs + cpu_state.pc); - - if (!cpu_state.abrt) - { - uint8_t opcode = fetchdat & 0xFF; - fetchdat >>= 8; - trap = cpu_state.flags & T_FLAG; - -// if (output == 3) -// pclog("int %04X(%06X):%04X : %08X %08X %08X %08X %04X %04X %04X(%08X) %04X %04X %04X(%08X) %08X %08X %08X SP=%04X:%08X %02X %04X %i %08X %08X %i %i %02X %02X %02X %02X %02X %f %02X%02X %02X%02X\n",CS,cs,pc,EAX,EBX,ECX,EDX,CS,DS,ES,es,FS,GS,SS,ss,EDI,ESI,EBP,SS,ESP,opcode,flags,ins,0, ldt.base, CPL, stack32, pic.pend, pic.mask, pic.mask2, pic2.pend, pic2.mask, pit.c[0], ram[0x8f13f], ram[0x8f13e], ram[0x8f141], ram[0x8f140]); - - cpu_state.pc++; - x86_opcodes[(opcode | cpu_state.op32) & 0x3ff](fetchdat); - } - - if (((cs + cpu_state.pc) >> 12) != pccache) - CPU_BLOCK_END(); - - if (cpu_state.abrt) - CPU_BLOCK_END(); - if (trap) - CPU_BLOCK_END(); - if (nmi && nmi_enable && nmi_mask) - CPU_BLOCK_END(); - if (cpu_end_block_after_ins) - { - cpu_end_block_after_ins--; - if (!cpu_end_block_after_ins) - CPU_BLOCK_END(); - } - - ins++; - insc++; - } - - if (trap) - { - trap = 0; - flags_rebuild(); - if (msw&1) - { - pmodeint(1,0); - } - else - { - writememw(ss,(SP-2)&0xFFFF,cpu_state.flags); - writememw(ss,(SP-4)&0xFFFF,CS); - writememw(ss,(SP-6)&0xFFFF,cpu_state.pc); - SP-=6; - addr = (1 << 2) + idt.base; - cpu_state.flags &= ~I_FLAG; - cpu_state.flags &= ~T_FLAG; - cpu_state.pc=readmemw(0,addr); - loadcs(readmemw(0,addr+2)); - } - } - - cpu_end_block_after_ins = 0; - } + exec_interpreter(); else - { - uint32_t phys_addr = get_phys(cs+cpu_state.pc); - int hash = HASH(phys_addr); - codeblock_t *block = &codeblock[codeblock_hash[hash]]; - int valid_block = 0; - - if (!cpu_state.abrt) - { - page_t *page = &pages[phys_addr >> 12]; - - /*Block must match current CS, PC, code segment size, - and physical address. The physical address check will - also catch any page faults at this stage*/ - valid_block = (block->pc == cs + cpu_state.pc) && (block->_cs == cs) && - (block->phys == phys_addr) && !((block->status ^ cpu_cur_status) & CPU_STATUS_FLAGS) && - ((block->status & cpu_cur_status & CPU_STATUS_MASK) == (cpu_cur_status & CPU_STATUS_MASK)); - if (!valid_block) - { - uint64_t mask = (uint64_t)1 << ((phys_addr >> PAGE_MASK_SHIFT) & PAGE_MASK_MASK); - int byte_offset = (phys_addr >> PAGE_BYTE_MASK_SHIFT) & PAGE_BYTE_MASK_OFFSET_MASK; - uint64_t byte_mask = 1ull << (PAGE_BYTE_MASK_MASK & 0x3f); - - if ((page->code_present_mask & mask) || (page->byte_code_present_mask[byte_offset] & byte_mask)) - { - /*Walk page tree to see if we find the correct block*/ - codeblock_t *new_block = codeblock_tree_find(phys_addr, cs); - if (new_block) - { - valid_block = (new_block->pc == cs + cpu_state.pc) && (new_block->_cs == cs) && - (new_block->phys == phys_addr) && !((new_block->status ^ cpu_cur_status) & CPU_STATUS_FLAGS) && - ((new_block->status & cpu_cur_status & CPU_STATUS_MASK) == (cpu_cur_status & CPU_STATUS_MASK)); - if (valid_block) - { - block = new_block; - codeblock_hash[hash] = get_block_nr(block); - } - } - } - } - - if (valid_block && (block->page_mask & *block->dirty_mask)) - { - codegen_check_flush(page, page->dirty_mask, phys_addr); - if (block->pc == BLOCK_PC_INVALID) - valid_block = 0; - else if (block->flags & CODEBLOCK_IN_DIRTY_LIST) - block->flags &= ~CODEBLOCK_WAS_RECOMPILED; - } - if (valid_block && block->page_mask2) - { - /*We don't want the second page to cause a page - fault at this stage - that would break any - code crossing a page boundary where the first - page is present but the second isn't. Instead - allow the first page to be interpreted and for - the page fault to occur when the page boundary - is actually crossed.*/ - uint32_t phys_addr_2 = get_phys_noabrt(block->pc + ((block->flags & CODEBLOCK_BYTE_MASK) ? 0x40 : 0x400)); - page_t *page_2 = &pages[phys_addr_2 >> 12]; - if ((block->phys_2 ^ phys_addr_2) & ~0xfff) - valid_block = 0; - else if (block->page_mask2 & *block->dirty_mask2) - { - codegen_check_flush(page_2, page_2->dirty_mask, phys_addr_2); - if (block->pc == BLOCK_PC_INVALID) - valid_block = 0; - else if (block->flags & CODEBLOCK_IN_DIRTY_LIST) - block->flags &= ~CODEBLOCK_WAS_RECOMPILED; - } - } - if (valid_block && (block->flags & CODEBLOCK_IN_DIRTY_LIST)) - { - block->flags &= ~CODEBLOCK_WAS_RECOMPILED; - if (block->flags & CODEBLOCK_BYTE_MASK) - block->flags |= CODEBLOCK_NO_IMMEDIATES; - else - block->flags |= CODEBLOCK_BYTE_MASK; - } - if (valid_block && (block->flags & CODEBLOCK_WAS_RECOMPILED) && (block->flags & CODEBLOCK_STATIC_TOP) && block->TOP != (cpu_state.TOP & 7)) - { - /*FPU top-of-stack does not match the value this block was compiled - with, re-compile using dynamic top-of-stack*/ - block->flags &= ~(CODEBLOCK_STATIC_TOP | CODEBLOCK_WAS_RECOMPILED); - } - } - - if (valid_block && (block->flags & CODEBLOCK_WAS_RECOMPILED)) - { - void (*code)() = (void *)&block->data[BLOCK_START]; - -// if (output) pclog("Run block at %04x:%04x %04x %04x %04x %04x %04x %04x ESP=%08x %04x %08x %08x %016llx %08x\n", CS, pc, AX, BX, CX, DX, SI, DI, ESP, BP, get_phys(cs+pc), block->phys, block->page_mask, block->endpc); - - inrecomp=1; - code(); - inrecomp=0; - - cpu_recomp_blocks++; - } - else if (valid_block && !cpu_state.abrt) - { - uint32_t start_pc = cs+cpu_state.pc; - const int max_block_size = (block->flags & CODEBLOCK_BYTE_MASK) ? ((128 - 25) - (start_pc & 0x3f)) : 1000; - - cpu_block_end = 0; - x86_was_reset = 0; - - cpu_new_blocks++; - - codegen_block_start_recompile(block); - codegen_in_recompile = 1; - -// if (output) pclog("Recompile block at %04x:%04x %04x %04x %04x %04x %04x %04x ESP=%04x %04x %02x%02x:%02x%02x %02x%02x:%02x%02x %02x%02x:%02x%02x\n", CS, pc, AX, BX, CX, DX, SI, DI, ESP, BP, ram[0x116330+0x6df4+0xa+3], ram[0x116330+0x6df4+0xa+2], ram[0x116330+0x6df4+0xa+1], ram[0x116330+0x6df4+0xa+0], ram[0x11d136+3],ram[0x11d136+2],ram[0x11d136+1],ram[0x11d136+0], ram[(0x119abe)+0x3],ram[(0x119abe)+0x2],ram[(0x119abe)+0x1],ram[(0x119abe)+0x0]); - while (!cpu_block_end) - { - cpu_state.oldpc = cpu_state.pc; - cpu_state.op32 = use32; - - cpu_state.ea_seg = &cpu_state.seg_ds; - cpu_state.ssegs = 0; - - fetchdat = fastreadl(cs + cpu_state.pc); - - if (!cpu_state.abrt) - { - uint8_t opcode = fetchdat & 0xFF; - fetchdat >>= 8; - -// if (output == 3) -// pclog("%04X(%06X):%04X : %08X %08X %08X %08X %04X %04X %04X(%08X) %04X %04X %04X(%08X) %08X %08X %08X SP=%04X:%08X %02X %04X %i %08X %08X %i %i %02X %02X %02X %02X %02X %08x %08x\n",CS,cs,pc,EAX,EBX,ECX,EDX,CS,DS,ES,es,FS,GS,SS,ss,EDI,ESI,EBP,SS,ESP,opcode,flags,ins,0, ldt.base, CPL, stack32, pic.pend, pic.mask, pic.mask2, pic2.pend, pic2.mask, cs+pc, pccache); - - cpu_state.pc++; - - codegen_generate_call(opcode, x86_opcodes[(opcode | cpu_state.op32) & 0x3ff], fetchdat, cpu_state.pc, cpu_state.pc-1); - - x86_opcodes[(opcode | cpu_state.op32) & 0x3ff](fetchdat); - - if (x86_was_reset) - break; - } - - /*Cap source code at 4000 bytes per block; this - will prevent any block from spanning more than - 2 pages. In practice this limit will never be - hit, as host block size is only 2kB*/ - if (((cs+cpu_state.pc) - start_pc) >= max_block_size) - CPU_BLOCK_END(); - - if (cpu_state.flags & T_FLAG) - CPU_BLOCK_END(); - - if (nmi && nmi_enable && nmi_mask) - CPU_BLOCK_END(); - - if (cpu_end_block_after_ins) - { - cpu_end_block_after_ins--; - if (!cpu_end_block_after_ins) - CPU_BLOCK_END(); - } - - if (cpu_state.abrt) - { - codegen_block_remove(); - CPU_BLOCK_END(); - } - - ins++; - insc++; - } - cpu_end_block_after_ins = 0; - - if (!cpu_state.abrt && !x86_was_reset) - codegen_block_end_recompile(block); - - if (x86_was_reset) - codegen_reset(); - - codegen_in_recompile = 0; - } - else if (!cpu_state.abrt) - { - /*Mark block but do not recompile*/ - uint32_t start_pc = cs+cpu_state.pc; - const int max_block_size = (block->flags & CODEBLOCK_BYTE_MASK) ? ((128 - 25) - (start_pc & 0x3f)) : 1000; - - cpu_block_end = 0; - x86_was_reset = 0; - - codegen_block_init(phys_addr); - -// if (output) pclog("Recompile block at %04x:%04x %04x %04x %04x %04x %04x %04x ESP=%04x %04x %02x%02x:%02x%02x %02x%02x:%02x%02x %02x%02x:%02x%02x\n", CS, pc, AX, BX, CX, DX, SI, DI, ESP, BP, ram[0x116330+0x6df4+0xa+3], ram[0x116330+0x6df4+0xa+2], ram[0x116330+0x6df4+0xa+1], ram[0x116330+0x6df4+0xa+0], ram[0x11d136+3],ram[0x11d136+2],ram[0x11d136+1],ram[0x11d136+0], ram[(0x119abe)+0x3],ram[(0x119abe)+0x2],ram[(0x119abe)+0x1],ram[(0x119abe)+0x0]); - while (!cpu_block_end) - { - cpu_state.oldpc = cpu_state.pc; - cpu_state.op32 = use32; - - cpu_state.ea_seg = &cpu_state.seg_ds; - cpu_state.ssegs = 0; - - codegen_endpc = (cs + cpu_state.pc) + 8; - fetchdat = fastreadl(cs + cpu_state.pc); - - if (!cpu_state.abrt) - { - uint8_t opcode = fetchdat & 0xFF; - fetchdat >>= 8; - -// if (output == 3) -// pclog("%04X(%06X):%04X : %08X %08X %08X %08X %04X %04X %04X(%08X) %04X %04X %04X(%08X) %08X %08X %08X SP=%04X:%08X %02X %04X %i %08X %08X %i %i %02X %02X %02X %02X %02X %08x %08x\n",CS,cs,pc,EAX,EBX,ECX,EDX,CS,DS,ES,es,FS,GS,SS,ss,EDI,ESI,EBP,SS,ESP,opcode,flags,ins,0, ldt.base, CPL, stack32, pic.pend, pic.mask, pic.mask2, pic2.pend, pic2.mask, cs+pc, pccache); - - cpu_state.pc++; - - x86_opcodes[(opcode | cpu_state.op32) & 0x3ff](fetchdat); - - if (x86_was_reset) - break; - } - - /*Cap source code at 4000 bytes per block; this - will prevent any block from spanning more than - 2 pages. In practice this limit will never be - hit, as host block size is only 2kB*/ - if (((cs+cpu_state.pc) - start_pc) >= max_block_size) - CPU_BLOCK_END(); - - if (cpu_state.flags & T_FLAG) - CPU_BLOCK_END(); - - if (nmi && nmi_enable && nmi_mask) - CPU_BLOCK_END(); - - if (cpu_end_block_after_ins) - { - cpu_end_block_after_ins--; - if (!cpu_end_block_after_ins) - CPU_BLOCK_END(); - } - - if (cpu_state.abrt) - { - codegen_block_remove(); - CPU_BLOCK_END(); - } - - ins++; - insc++; - } - cpu_end_block_after_ins = 0; - - if (!cpu_state.abrt && !x86_was_reset) - codegen_block_end(); - - if (x86_was_reset) - codegen_reset(); - } - else - cpu_state.oldpc = cpu_state.pc; - - } - + exec_recompiler(); cycdiff=oldcyc-cycles; tsc += cycdiff; @@ -637,25 +628,9 @@ void exec386_dynarec(int cycs) temp=picinterrupt(); if (temp!=0xFF) { + cpu_state.oldpc = cpu_state.pc; + x86_int(temp); // pclog("IRQ %02X %04X:%04X %04X:%04X\n", temp, SS, SP, CS, pc); - CPU_BLOCK_END(); - flags_rebuild(); - if (msw&1) - { - pmodeint(temp,0); - } - else - { - writememw(ss,(SP-2)&0xFFFF,cpu_state.flags); - writememw(ss,(SP-4)&0xFFFF,CS); - writememw(ss,(SP-6)&0xFFFF,cpu_state.pc); - SP-=6; - addr=temp<<2; - cpu_state.flags &= ~I_FLAG; - cpu_state.flags &= ~T_FLAG; - cpu_state.pc=readmemw(0,addr); - loadcs(readmemw(0,addr+2)); - } } } }