diff options
Diffstat (limited to 'z80_to_x86.c')
| -rw-r--r-- | z80_to_x86.c | 2131 |
1 files changed, 1192 insertions, 939 deletions
diff --git a/z80_to_x86.c b/z80_to_x86.c index b529766..6da2321 100644 --- a/z80_to_x86.c +++ b/z80_to_x86.c @@ -28,23 +28,7 @@ #define dprintf #endif -void z80_read_byte(); -void z80_read_word(); -void z80_write_byte(); -void z80_write_word_highfirst(); -void z80_write_word_lowfirst(); -void z80_save_context(); -void z80_native_addr(); -void z80_do_sync(); -void z80_handle_cycle_limit_int(); -void z80_retrans_stub(); -void z80_io_read(); -void z80_io_write(); -void z80_halt(); -void z80_save_context(); -void z80_load_context(); - -uint8_t * zbreakpoint_patch(z80_context * context, uint16_t address, uint8_t * native); +uint32_t zbreakpoint_patch(z80_context * context, uint16_t address, code_ptr dst); uint8_t z80_size(z80inst * inst) { @@ -56,24 +40,9 @@ uint8_t z80_size(z80inst * inst) return SZ_B; } -uint8_t * zcycles(uint8_t * dst, uint32_t num_cycles) -{ - return add_ir(dst, num_cycles, ZCYCLES, SZ_D); -} - -uint8_t * z80_check_cycles_int(uint8_t * dst, uint16_t address) -{ - dst = cmp_rr(dst, ZCYCLES, ZLIMIT, SZ_D); - uint8_t * jmp_off = dst+1; - dst = jcc(dst, CC_NC, dst + 7); - dst = mov_ir(dst, address, SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_handle_cycle_limit_int); - *jmp_off = dst - (jmp_off+1); - return dst; -} - -uint8_t * translate_z80_reg(z80inst * inst, x86_ea * ea, uint8_t * dst, x86_z80_options * opts) +void translate_z80_reg(z80inst * inst, host_ea * ea, z80_options * opts) { + code_info *code = &opts->gen.code; if (inst->reg == Z80_USE_IMMED) { ea->mode = MODE_IMMED; ea->disp = inst->immed; @@ -83,12 +52,12 @@ uint8_t * translate_z80_reg(z80inst * inst, x86_ea * ea, uint8_t * dst, x86_z80_ ea->mode = MODE_REG_DIRECT; if (inst->reg == Z80_IYH) { if ((inst->addr_mode & 0x1F) == Z80_REG && inst->ea_reg == Z80_IYL) { - dst = mov_rr(dst, opts->regs[Z80_IY], SCRATCH1, SZ_W); - dst = ror_ir(dst, 8, SCRATCH1, SZ_W); - ea->base = SCRATCH1; + mov_rr(code, opts->regs[Z80_IY], opts->gen.scratch1, SZ_W); + ror_ir(code, 8, opts->gen.scratch1, SZ_W); + ea->base = opts->gen.scratch1; } else { ea->base = opts->regs[Z80_IYL]; - dst = ror_ir(dst, 8, opts->regs[Z80_IY], SZ_W); + ror_ir(code, 8, opts->regs[Z80_IY], SZ_W); } } else if(opts->regs[inst->reg] >= 0) { ea->base = opts->regs[inst->reg]; @@ -98,64 +67,64 @@ uint8_t * translate_z80_reg(z80inst * inst, x86_ea * ea, uint8_t * dst, x86_z80_ if (other_reg >= R8 || (other_reg >= RSP && other_reg <= RDI)) { //we can't mix an *H reg with a register that requires the REX prefix ea->base = opts->regs[z80_low_reg(inst->reg)]; - dst = ror_ir(dst, 8, ea->base, SZ_W); + ror_ir(code, 8, ea->base, SZ_W); } } else if((inst->addr_mode & 0x1F) != Z80_UNUSED && (inst->addr_mode & 0x1F) != Z80_IMMED) { //temp regs require REX prefix too ea->base = opts->regs[z80_low_reg(inst->reg)]; - dst = ror_ir(dst, 8, ea->base, SZ_W); + ror_ir(code, 8, ea->base, SZ_W); } } } else { ea->mode = MODE_REG_DISPLACE8; - ea->base = CONTEXT; + ea->base = opts->gen.context_reg; ea->disp = offsetof(z80_context, regs) + inst->reg; } } - return dst; } -uint8_t * z80_save_reg(uint8_t * dst, z80inst * inst, x86_z80_options * opts) +void z80_save_reg(z80inst * inst, z80_options * opts) { + code_info *code = &opts->gen.code; if (inst->reg == Z80_IYH) { if ((inst->addr_mode & 0x1F) == Z80_REG && inst->ea_reg == Z80_IYL) { - dst = ror_ir(dst, 8, opts->regs[Z80_IY], SZ_W); - dst = mov_rr(dst, SCRATCH1, opts->regs[Z80_IYL], SZ_B); - dst = ror_ir(dst, 8, opts->regs[Z80_IY], SZ_W); + ror_ir(code, 8, opts->regs[Z80_IY], SZ_W); + mov_rr(code, opts->gen.scratch1, opts->regs[Z80_IYL], SZ_B); + ror_ir(code, 8, opts->regs[Z80_IY], SZ_W); } else { - dst = ror_ir(dst, 8, opts->regs[Z80_IY], SZ_W); + ror_ir(code, 8, opts->regs[Z80_IY], SZ_W); } } else if (opts->regs[inst->reg] >= AH && opts->regs[inst->reg] <= BH) { if ((inst->addr_mode & 0x1F) == Z80_REG) { uint8_t other_reg = opts->regs[inst->ea_reg]; if (other_reg >= R8 || (other_reg >= RSP && other_reg <= RDI)) { //we can't mix an *H reg with a register that requires the REX prefix - dst = ror_ir(dst, 8, opts->regs[z80_low_reg(inst->reg)], SZ_W); + ror_ir(code, 8, opts->regs[z80_low_reg(inst->reg)], SZ_W); } } else if((inst->addr_mode & 0x1F) != Z80_UNUSED && (inst->addr_mode & 0x1F) != Z80_IMMED) { //temp regs require REX prefix too - dst = ror_ir(dst, 8, opts->regs[z80_low_reg(inst->reg)], SZ_W); + ror_ir(code, 8, opts->regs[z80_low_reg(inst->reg)], SZ_W); } } - return dst; } -uint8_t * translate_z80_ea(z80inst * inst, x86_ea * ea, uint8_t * dst, x86_z80_options * opts, uint8_t read, uint8_t modify) +void translate_z80_ea(z80inst * inst, host_ea * ea, z80_options * opts, uint8_t read, uint8_t modify) { + code_info *code = &opts->gen.code; uint8_t size, reg, areg; ea->mode = MODE_REG_DIRECT; - areg = read ? SCRATCH1 : SCRATCH2; + areg = read ? opts->gen.scratch1 : opts->gen.scratch2; switch(inst->addr_mode & 0x1F) { case Z80_REG: if (inst->ea_reg == Z80_IYH) { if (inst->reg == Z80_IYL) { - dst = mov_rr(dst, opts->regs[Z80_IY], SCRATCH1, SZ_W); - dst = ror_ir(dst, 8, SCRATCH1, SZ_W); - ea->base = SCRATCH1; + mov_rr(code, opts->regs[Z80_IY], opts->gen.scratch1, SZ_W); + ror_ir(code, 8, opts->gen.scratch1, SZ_W); + ea->base = opts->gen.scratch1; } else { ea->base = opts->regs[Z80_IYL]; - dst = ror_ir(dst, 8, opts->regs[Z80_IY], SZ_W); + ror_ir(code, 8, opts->regs[Z80_IY], SZ_W); } } else if(opts->regs[inst->ea_reg] >= 0) { ea->base = opts->regs[inst->ea_reg]; @@ -164,7 +133,7 @@ uint8_t * translate_z80_ea(z80inst * inst, x86_ea * ea, uint8_t * dst, x86_z80_o if (other_reg >= R8 || (other_reg >= RSP && other_reg <= RDI)) { //we can't mix an *H reg with a register that requires the REX prefix ea->base = opts->regs[z80_low_reg(inst->ea_reg)]; - dst = ror_ir(dst, 8, ea->base, SZ_W); + ror_ir(code, 8, ea->base, SZ_W); } } } else { @@ -174,70 +143,70 @@ uint8_t * translate_z80_ea(z80inst * inst, x86_ea * ea, uint8_t * dst, x86_z80_o } break; case Z80_REG_INDIRECT: - dst = mov_rr(dst, opts->regs[inst->ea_reg], areg, SZ_W); + mov_rr(code, opts->regs[inst->ea_reg], areg, SZ_W); size = z80_size(inst); if (read) { if (modify) { - //dst = push_r(dst, SCRATCH1); - dst = mov_rrdisp8(dst, SCRATCH1, CONTEXT, offsetof(z80_context, scratch1), SZ_W); + //push_r(code, opts->gen.scratch1); + mov_rrdisp(code, opts->gen.scratch1, opts->gen.context_reg, offsetof(z80_context, scratch1), SZ_W); } if (size == SZ_B) { - dst = call(dst, (uint8_t *)z80_read_byte); + call(code, opts->read_8); } else { - dst = call(dst, (uint8_t *)z80_read_word); + call(code, opts->read_16); } if (modify) { - //dst = pop_r(dst, SCRATCH2); - dst = mov_rdisp8r(dst, CONTEXT, offsetof(z80_context, scratch1), SCRATCH2, SZ_W); + //pop_r(code, opts->gen.scratch2); + mov_rdispr(code, opts->gen.context_reg, offsetof(z80_context, scratch1), opts->gen.scratch2, SZ_W); } } - ea->base = SCRATCH1; + ea->base = opts->gen.scratch1; break; case Z80_IMMED: ea->mode = MODE_IMMED; ea->disp = inst->immed; break; case Z80_IMMED_INDIRECT: - dst = mov_ir(dst, inst->immed, areg, SZ_W); + mov_ir(code, inst->immed, areg, SZ_W); size = z80_size(inst); if (read) { /*if (modify) { - dst = push_r(dst, SCRATCH1); + push_r(code, opts->gen.scratch1); }*/ if (size == SZ_B) { - dst = call(dst, (uint8_t *)z80_read_byte); + call(code, opts->read_8); } else { - dst = call(dst, (uint8_t *)z80_read_word); + call(code, opts->read_16); } if (modify) { - //dst = pop_r(dst, SCRATCH2); - dst = mov_ir(dst, inst->immed, SCRATCH2, SZ_W); + //pop_r(code, opts->gen.scratch2); + mov_ir(code, inst->immed, opts->gen.scratch2, SZ_W); } } - ea->base = SCRATCH1; + ea->base = opts->gen.scratch1; break; case Z80_IX_DISPLACE: case Z80_IY_DISPLACE: reg = opts->regs[(inst->addr_mode & 0x1F) == Z80_IX_DISPLACE ? Z80_IX : Z80_IY]; - dst = mov_rr(dst, reg, areg, SZ_W); - dst = add_ir(dst, inst->ea_reg & 0x80 ? inst->ea_reg - 256 : inst->ea_reg, areg, SZ_W); + mov_rr(code, reg, areg, SZ_W); + add_ir(code, inst->ea_reg & 0x80 ? inst->ea_reg - 256 : inst->ea_reg, areg, SZ_W); size = z80_size(inst); if (read) { if (modify) { - //dst = push_r(dst, SCRATCH1); - dst = mov_rrdisp8(dst, SCRATCH1, CONTEXT, offsetof(z80_context, scratch1), SZ_W); + //push_r(code, opts->gen.scratch1); + mov_rrdisp(code, opts->gen.scratch1, opts->gen.context_reg, offsetof(z80_context, scratch1), SZ_W); } if (size == SZ_B) { - dst = call(dst, (uint8_t *)z80_read_byte); + call(code, opts->read_8); } else { - dst = call(dst, (uint8_t *)z80_read_word); + call(code, opts->read_16); } if (modify) { - //dst = pop_r(dst, SCRATCH2); - dst = mov_rdisp8r(dst, CONTEXT, offsetof(z80_context, scratch1), SCRATCH2, SZ_W); + //pop_r(code, opts->gen.scratch2); + mov_rdispr(code, opts->gen.context_reg, offsetof(z80_context, scratch1), opts->gen.scratch2, SZ_W); } } - ea->base = SCRATCH1; + ea->base = opts->gen.scratch1; break; case Z80_UNUSED: ea->mode = MODE_UNUSED; @@ -246,32 +215,30 @@ uint8_t * translate_z80_ea(z80inst * inst, x86_ea * ea, uint8_t * dst, x86_z80_o fprintf(stderr, "Unrecognized Z80 addressing mode %d\n", inst->addr_mode & 0x1F); exit(1); } - return dst; } -uint8_t * z80_save_ea(uint8_t * dst, z80inst * inst, x86_z80_options * opts) +void z80_save_ea(code_info *code, z80inst * inst, z80_options * opts) { if ((inst->addr_mode & 0x1F) == Z80_REG) { if (inst->ea_reg == Z80_IYH) { if (inst->reg == Z80_IYL) { - dst = ror_ir(dst, 8, opts->regs[Z80_IY], SZ_W); - dst = mov_rr(dst, SCRATCH1, opts->regs[Z80_IYL], SZ_B); - dst = ror_ir(dst, 8, opts->regs[Z80_IY], SZ_W); + ror_ir(code, 8, opts->regs[Z80_IY], SZ_W); + mov_rr(code, opts->gen.scratch1, opts->regs[Z80_IYL], SZ_B); + ror_ir(code, 8, opts->regs[Z80_IY], SZ_W); } else { - dst = ror_ir(dst, 8, opts->regs[Z80_IY], SZ_W); + ror_ir(code, 8, opts->regs[Z80_IY], SZ_W); } } else if (inst->reg != Z80_UNUSED && inst->reg != Z80_USE_IMMED && opts->regs[inst->ea_reg] >= AH && opts->regs[inst->ea_reg] <= BH) { uint8_t other_reg = opts->regs[inst->reg]; if (other_reg >= R8 || (other_reg >= RSP && other_reg <= RDI)) { //we can't mix an *H reg with a register that requires the REX prefix - dst = ror_ir(dst, 8, opts->regs[z80_low_reg(inst->ea_reg)], SZ_W); + ror_ir(code, 8, opts->regs[z80_low_reg(inst->ea_reg)], SZ_W); } } } - return dst; } -uint8_t * z80_save_result(uint8_t * dst, z80inst * inst) +void z80_save_result(z80_options *opts, z80inst * inst) { switch(inst->addr_mode & 0x1f) { @@ -280,12 +247,11 @@ uint8_t * z80_save_result(uint8_t * dst, z80inst * inst) case Z80_IX_DISPLACE: case Z80_IY_DISPLACE: if (z80_size(inst) == SZ_B) { - dst = call(dst, (uint8_t *)z80_write_byte); + call(&opts->gen.code, opts->write_8); } else { - dst = call(dst, (uint8_t *)z80_write_word_lowfirst); + call(&opts->gen.code, opts->write_16_lowfirst); } } - return dst; } enum { @@ -332,15 +298,16 @@ void z80_print_regs_exit(z80_context * context) exit(0); } -uint8_t * translate_z80inst(z80inst * inst, uint8_t * dst, z80_context * context, uint16_t address, uint8_t interp) +void translate_z80inst(z80inst * inst, z80_context * context, uint16_t address, uint8_t interp) { - uint32_t cycles; - x86_ea src_op, dst_op; + uint32_t num_cycles; + host_ea src_op, dst_op; uint8_t size; - x86_z80_options *opts = context->options; - uint8_t * start = dst; + z80_options *opts = context->options; + uint8_t * start = opts->gen.code.cur; + code_info *code = &opts->gen.code; if (!interp) { - dst = z80_check_cycles_int(dst, address); + check_cycles_int(&opts->gen, address); if (context->breakpoint_flags[address / sizeof(uint8_t)] & (1 << (address % sizeof(uint8_t)))) { zbreakpoint_patch(context, address, start); } @@ -353,253 +320,253 @@ uint8_t * translate_z80inst(z80inst * inst, uint8_t * dst, z80_context * context { case Z80_REG: case Z80_REG_INDIRECT: - cycles = size == SZ_B ? 4 : 6; + num_cycles = size == SZ_B ? 4 : 6; if (inst->ea_reg == Z80_IX || inst->ea_reg == Z80_IY) { - cycles += 4; + num_cycles += 4; } if (inst->reg == Z80_I || inst->ea_reg == Z80_I) { - cycles += 5; + num_cycles += 5; } break; case Z80_IMMED: - cycles = size == SZ_B ? 7 : 10; + num_cycles = size == SZ_B ? 7 : 10; break; case Z80_IMMED_INDIRECT: - cycles = 10; + num_cycles = 10; break; case Z80_IX_DISPLACE: case Z80_IY_DISPLACE: - cycles = 16; + num_cycles = 16; break; } if ((inst->reg >= Z80_IXL && inst->reg <= Z80_IYH) || inst->reg == Z80_IX || inst->reg == Z80_IY) { - cycles += 4; + num_cycles += 4; } - dst = zcycles(dst, cycles); + cycles(&opts->gen, num_cycles); if (inst->addr_mode & Z80_DIR) { - dst = translate_z80_ea(inst, &dst_op, dst, opts, DONT_READ, MODIFY); - dst = translate_z80_reg(inst, &src_op, dst, opts); + translate_z80_ea(inst, &dst_op, opts, DONT_READ, MODIFY); + translate_z80_reg(inst, &src_op, opts); } else { - dst = translate_z80_ea(inst, &src_op, dst, opts, READ, DONT_MODIFY); - dst = translate_z80_reg(inst, &dst_op, dst, opts); + translate_z80_ea(inst, &src_op, opts, READ, DONT_MODIFY); + translate_z80_reg(inst, &dst_op, opts); } if (src_op.mode == MODE_REG_DIRECT) { if(dst_op.mode == MODE_REG_DISPLACE8) { - dst = mov_rrdisp8(dst, src_op.base, dst_op.base, dst_op.disp, size); + mov_rrdisp(code, src_op.base, dst_op.base, dst_op.disp, size); } else { - dst = mov_rr(dst, src_op.base, dst_op.base, size); + mov_rr(code, src_op.base, dst_op.base, size); } } else if(src_op.mode == MODE_IMMED) { - dst = mov_ir(dst, src_op.disp, dst_op.base, size); + mov_ir(code, src_op.disp, dst_op.base, size); } else { - dst = mov_rdisp8r(dst, src_op.base, src_op.disp, dst_op.base, size); + mov_rdispr(code, src_op.base, src_op.disp, dst_op.base, size); } if (inst->ea_reg == Z80_I && inst->addr_mode == Z80_REG) { //ld a, i sets some flags //TODO: Implement half-carry flag - dst = cmp_ir(dst, 0, dst_op.base, SZ_B); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B);; - dst = mov_rdisp8r(dst, CONTEXT, offsetof(z80_context, iff2), SCRATCH1, SZ_B); - dst = mov_rrdisp8(dst, SCRATCH1, CONTEXT, zf_off(ZF_PV), SZ_B); - } - dst = z80_save_reg(dst, inst, opts); - dst = z80_save_ea(dst, inst, opts); + cmp_ir(code, 0, dst_op.base, SZ_B); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B);; + mov_rdispr(code, opts->gen.context_reg, offsetof(z80_context, iff2), SCRATCH1, SZ_B); + mov_rrdisp(code, opts->gen.scratch1, opts->gen.context_reg, zf_off(ZF_PV), SZ_B); + } + z80_save_reg(inst, opts); + z80_save_ea(code, inst, opts); if (inst->addr_mode & Z80_DIR) { - dst = z80_save_result(dst, inst); + z80_save_result(opts, inst); } break; case Z80_PUSH: - dst = zcycles(dst, (inst->reg == Z80_IX || inst->reg == Z80_IY) ? 9 : 5); - dst = sub_ir(dst, 2, opts->regs[Z80_SP], SZ_W); + cycles(&opts->gen, (inst->reg == Z80_IX || inst->reg == Z80_IY) ? 9 : 5); + sub_ir(code, 2, opts->regs[Z80_SP], SZ_W); if (inst->reg == Z80_AF) { - dst = mov_rr(dst, opts->regs[Z80_A], SCRATCH1, SZ_B); - dst = shl_ir(dst, 8, SCRATCH1, SZ_W); - dst = mov_rdisp8r(dst, CONTEXT, zf_off(ZF_S), SCRATCH1, SZ_B); - dst = shl_ir(dst, 1, SCRATCH1, SZ_B); - dst = or_rdisp8r(dst, CONTEXT, zf_off(ZF_Z), SCRATCH1, SZ_B); - dst = shl_ir(dst, 2, SCRATCH1, SZ_B); - dst = or_rdisp8r(dst, CONTEXT, zf_off(ZF_H), SCRATCH1, SZ_B); - dst = shl_ir(dst, 2, SCRATCH1, SZ_B); - dst = or_rdisp8r(dst, CONTEXT, zf_off(ZF_PV), SCRATCH1, SZ_B); - dst = shl_ir(dst, 1, SCRATCH1, SZ_B); - dst = or_rdisp8r(dst, CONTEXT, zf_off(ZF_N), SCRATCH1, SZ_B); - dst = shl_ir(dst, 1, SCRATCH1, SZ_B); - dst = or_rdisp8r(dst, CONTEXT, zf_off(ZF_C), SCRATCH1, SZ_B); + mov_rr(code, opts->regs[Z80_A], opts->gen.scratch1, SZ_B); + shl_ir(code, 8, opts->gen.scratch1, SZ_W); + mov_rdispr(code, opts->gen.context_reg, zf_off(ZF_S), opts->gen.scratch1, SZ_B); + shl_ir(code, 1, opts->gen.scratch1, SZ_B); + or_rdispr(code, opts->gen.context_reg, zf_off(ZF_Z), opts->gen.scratch1, SZ_B); + shl_ir(code, 2, opts->gen.scratch1, SZ_B); + or_rdispr(code, opts->gen.context_reg, zf_off(ZF_H), opts->gen.scratch1, SZ_B); + shl_ir(code, 2, opts->gen.scratch1, SZ_B); + or_rdispr(code, opts->gen.context_reg, zf_off(ZF_PV), opts->gen.scratch1, SZ_B); + shl_ir(code, 1, opts->gen.scratch1, SZ_B); + or_rdispr(code, opts->gen.context_reg, zf_off(ZF_N), opts->gen.scratch1, SZ_B); + shl_ir(code, 1, opts->gen.scratch1, SZ_B); + or_rdispr(code, opts->gen.context_reg, zf_off(ZF_C), opts->gen.scratch1, SZ_B); } else { - dst = translate_z80_reg(inst, &src_op, dst, opts); - dst = mov_rr(dst, src_op.base, SCRATCH1, SZ_W); + translate_z80_reg(inst, &src_op, opts); + mov_rr(code, src_op.base, opts->gen.scratch1, SZ_W); } - dst = mov_rr(dst, opts->regs[Z80_SP], SCRATCH2, SZ_W); - dst = call(dst, (uint8_t *)z80_write_word_highfirst); + mov_rr(code, opts->regs[Z80_SP], opts->gen.scratch2, SZ_W); + call(code, opts->write_16_highfirst); //no call to save_z80_reg needed since there's no chance we'll use the only //the upper half of a register pair break; case Z80_POP: - dst = zcycles(dst, (inst->reg == Z80_IX || inst->reg == Z80_IY) ? 8 : 4); - dst = mov_rr(dst, opts->regs[Z80_SP], SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_read_word); - dst = add_ir(dst, 2, opts->regs[Z80_SP], SZ_W); + cycles(&opts->gen, (inst->reg == Z80_IX || inst->reg == Z80_IY) ? 8 : 4); + mov_rr(code, opts->regs[Z80_SP], opts->gen.scratch1, SZ_W); + call(code, opts->read_16); + add_ir(code, 2, opts->regs[Z80_SP], SZ_W); if (inst->reg == Z80_AF) { - dst = bt_ir(dst, 0, SCRATCH1, SZ_W); - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = bt_ir(dst, 1, SCRATCH1, SZ_W); - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_N)); - dst = bt_ir(dst, 2, SCRATCH1, SZ_W); - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_PV)); - dst = bt_ir(dst, 4, SCRATCH1, SZ_W); - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_H)); - dst = bt_ir(dst, 6, SCRATCH1, SZ_W); - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_Z)); - dst = bt_ir(dst, 7, SCRATCH1, SZ_W); - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_S)); - dst = shr_ir(dst, 8, SCRATCH1, SZ_W); - dst = mov_rr(dst, SCRATCH1, opts->regs[Z80_A], SZ_B); + bt_ir(code, 0, opts->gen.scratch1, SZ_W); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + bt_ir(code, 1, opts->gen.scratch1, SZ_W); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_N)); + bt_ir(code, 2, opts->gen.scratch1, SZ_W); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_PV)); + bt_ir(code, 4, opts->gen.scratch1, SZ_W); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_H)); + bt_ir(code, 6, opts->gen.scratch1, SZ_W); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_Z)); + bt_ir(code, 7, opts->gen.scratch1, SZ_W); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_S)); + shr_ir(code, 8, opts->gen.scratch1, SZ_W); + mov_rr(code, opts->gen.scratch1, opts->regs[Z80_A], SZ_B); } else { - dst = translate_z80_reg(inst, &src_op, dst, opts); - dst = mov_rr(dst, SCRATCH1, src_op.base, SZ_W); + translate_z80_reg(inst, &src_op, opts); + mov_rr(code, opts->gen.scratch1, src_op.base, SZ_W); } //no call to save_z80_reg needed since there's no chance we'll use the only //the upper half of a register pair break; case Z80_EX: if (inst->addr_mode == Z80_REG || inst->reg == Z80_HL) { - cycles = 4; + num_cycles = 4; } else { - cycles = 8; + num_cycles = 8; } - dst = zcycles(dst, cycles); + cycles(&opts->gen, num_cycles); if (inst->addr_mode == Z80_REG) { if(inst->reg == Z80_AF) { - dst = mov_rr(dst, opts->regs[Z80_A], SCRATCH1, SZ_B); - dst = mov_rdisp8r(dst, CONTEXT, zar_off(Z80_A), opts->regs[Z80_A], SZ_B); - dst = mov_rrdisp8(dst, SCRATCH1, CONTEXT, zar_off(Z80_A), SZ_B); + mov_rr(code, opts->regs[Z80_A], opts->gen.scratch1, SZ_B); + mov_rdispr(code, opts->gen.context_reg, zar_off(Z80_A), opts->regs[Z80_A], SZ_B); + mov_rrdisp(code, opts->gen.scratch1, opts->gen.context_reg, zar_off(Z80_A), SZ_B); //Flags are currently word aligned, so we can move //them efficiently a word at a time for (int f = ZF_C; f < ZF_NUM; f+=2) { - dst = mov_rdisp8r(dst, CONTEXT, zf_off(f), SCRATCH1, SZ_W); - dst = mov_rdisp8r(dst, CONTEXT, zaf_off(f), SCRATCH2, SZ_W); - dst = mov_rrdisp8(dst, SCRATCH1, CONTEXT, zaf_off(f), SZ_W); - dst = mov_rrdisp8(dst, SCRATCH2, CONTEXT, zf_off(f), SZ_W); + mov_rdispr(code, opts->gen.context_reg, zf_off(f), opts->gen.scratch1, SZ_W); + mov_rdispr(code, opts->gen.context_reg, zaf_off(f), opts->gen.scratch2, SZ_W); + mov_rrdisp(code, opts->gen.scratch1, opts->gen.context_reg, zaf_off(f), SZ_W); + mov_rrdisp(code, opts->gen.scratch2, opts->gen.context_reg, zf_off(f), SZ_W); } } else { - dst = xchg_rr(dst, opts->regs[Z80_DE], opts->regs[Z80_HL], SZ_W); + xchg_rr(code, opts->regs[Z80_DE], opts->regs[Z80_HL], SZ_W); } } else { - dst = mov_rr(dst, opts->regs[Z80_SP], SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_read_byte); - dst = xchg_rr(dst, opts->regs[inst->reg], SCRATCH1, SZ_B); - dst = mov_rr(dst, opts->regs[Z80_SP], SCRATCH2, SZ_W); - dst = call(dst, (uint8_t *)z80_write_byte); - dst = zcycles(dst, 1); + mov_rr(code, opts->regs[Z80_SP], opts->gen.scratch1, SZ_W); + call(code, opts->read_8); + xchg_rr(code, opts->regs[inst->reg], opts->gen.scratch1, SZ_B); + mov_rr(code, opts->regs[Z80_SP], opts->gen.scratch2, SZ_W); + call(code, opts->write_8); + cycles(&opts->gen, 1); uint8_t high_reg = z80_high_reg(inst->reg); uint8_t use_reg; //even though some of the upper halves can be used directly //the limitations on mixing *H regs with the REX prefix //prevent us from taking advantage of it use_reg = opts->regs[inst->reg]; - dst = ror_ir(dst, 8, use_reg, SZ_W); - dst = mov_rr(dst, opts->regs[Z80_SP], SCRATCH1, SZ_W); - dst = add_ir(dst, 1, SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_read_byte); - dst = xchg_rr(dst, use_reg, SCRATCH1, SZ_B); - dst = mov_rr(dst, opts->regs[Z80_SP], SCRATCH2, SZ_W); - dst = add_ir(dst, 1, SCRATCH2, SZ_W); - dst = call(dst, (uint8_t *)z80_write_byte); + ror_ir(code, 8, use_reg, SZ_W); + mov_rr(code, opts->regs[Z80_SP], opts->gen.scratch1, SZ_W); + add_ir(code, 1, opts->gen.scratch1, SZ_W); + call(code, opts->read_8); + xchg_rr(code, use_reg, opts->gen.scratch1, SZ_B); + mov_rr(code, opts->regs[Z80_SP], opts->gen.scratch2, SZ_W); + add_ir(code, 1, opts->gen.scratch2, SZ_W); + call(code, opts->write_8); //restore reg to normal rotation - dst = ror_ir(dst, 8, use_reg, SZ_W); - dst = zcycles(dst, 2); + ror_ir(code, 8, use_reg, SZ_W); + cycles(&opts->gen, 2); } break; case Z80_EXX: - dst = zcycles(dst, 4); - dst = mov_rr(dst, opts->regs[Z80_BC], SCRATCH1, SZ_W); - dst = mov_rr(dst, opts->regs[Z80_HL], SCRATCH2, SZ_W); - dst = mov_rdisp8r(dst, CONTEXT, zar_off(Z80_C), opts->regs[Z80_BC], SZ_W); - dst = mov_rdisp8r(dst, CONTEXT, zar_off(Z80_L), opts->regs[Z80_HL], SZ_W); - dst = mov_rrdisp8(dst, SCRATCH1, CONTEXT, zar_off(Z80_C), SZ_W); - dst = mov_rrdisp8(dst, SCRATCH2, CONTEXT, zar_off(Z80_L), SZ_W); - dst = mov_rr(dst, opts->regs[Z80_DE], SCRATCH1, SZ_W); - dst = mov_rdisp8r(dst, CONTEXT, zar_off(Z80_E), opts->regs[Z80_DE], SZ_W); - dst = mov_rrdisp8(dst, SCRATCH1, CONTEXT, zar_off(Z80_E), SZ_W); + cycles(&opts->gen, 4); + mov_rr(code, opts->regs[Z80_BC], opts->gen.scratch1, SZ_W); + mov_rr(code, opts->regs[Z80_HL], opts->gen.scratch2, SZ_W); + mov_rdispr(code, opts->gen.context_reg, zar_off(Z80_C), opts->regs[Z80_BC], SZ_W); + mov_rdispr(code, opts->gen.context_reg, zar_off(Z80_L), opts->regs[Z80_HL], SZ_W); + mov_rrdisp(code, opts->gen.scratch1, opts->gen.context_reg, zar_off(Z80_C), SZ_W); + mov_rrdisp(code, opts->gen.scratch2, opts->gen.context_reg, zar_off(Z80_L), SZ_W); + mov_rr(code, opts->regs[Z80_DE], opts->gen.scratch1, SZ_W); + mov_rdispr(code, opts->gen.context_reg, zar_off(Z80_E), opts->regs[Z80_DE], SZ_W); + mov_rrdisp(code, opts->gen.scratch1, opts->gen.context_reg, zar_off(Z80_E), SZ_W); break; case Z80_LDI: { - dst = zcycles(dst, 8); - dst = mov_rr(dst, opts->regs[Z80_HL], SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_read_byte); - dst = mov_rr(dst, opts->regs[Z80_DE], SCRATCH2, SZ_W); - dst = call(dst, (uint8_t *)z80_write_byte); - dst = zcycles(dst, 2); - dst = add_ir(dst, 1, opts->regs[Z80_DE], SZ_W); - dst = add_ir(dst, 1, opts->regs[Z80_HL], SZ_W); - dst = sub_ir(dst, 1, opts->regs[Z80_BC], SZ_W); + cycles(&opts->gen, 8); + mov_rr(code, opts->regs[Z80_HL], opts->gen.scratch1, SZ_W); + call(code, opts->read_8); + mov_rr(code, opts->regs[Z80_DE], opts->gen.scratch2, SZ_W); + call(code, opts->write_8); + cycles(&opts->gen, 2); + add_ir(code, 1, opts->regs[Z80_DE], SZ_W); + add_ir(code, 1, opts->regs[Z80_HL], SZ_W); + sub_ir(code, 1, opts->regs[Z80_BC], SZ_W); //TODO: Implement half-carry - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); - dst = setcc_rdisp8(dst, CC_NZ, CONTEXT, zf_off(ZF_PV)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_NZ, opts->gen.context_reg, zf_off(ZF_PV)); break; } case Z80_LDIR: { - dst = zcycles(dst, 8); - dst = mov_rr(dst, opts->regs[Z80_HL], SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_read_byte); - dst = mov_rr(dst, opts->regs[Z80_DE], SCRATCH2, SZ_W); - dst = call(dst, (uint8_t *)z80_write_byte); - dst = add_ir(dst, 1, opts->regs[Z80_DE], SZ_W); - dst = add_ir(dst, 1, opts->regs[Z80_HL], SZ_W); - - dst = sub_ir(dst, 1, opts->regs[Z80_BC], SZ_W); - uint8_t * cont = dst+1; - dst = jcc(dst, CC_Z, dst+2); - dst = zcycles(dst, 7); + cycles(&opts->gen, 8); + mov_rr(code, opts->regs[Z80_HL], opts->gen.scratch1, SZ_W); + call(code, opts->read_8); + mov_rr(code, opts->regs[Z80_DE], opts->gen.scratch2, SZ_W); + call(code, opts->write_8); + add_ir(code, 1, opts->regs[Z80_DE], SZ_W); + add_ir(code, 1, opts->regs[Z80_HL], SZ_W); + + sub_ir(code, 1, opts->regs[Z80_BC], SZ_W); + uint8_t * cont = code->cur+1; + jcc(code, CC_Z, code->cur+2); + cycles(&opts->gen, 7); //TODO: Figure out what the flag state should be here //TODO: Figure out whether an interrupt can interrupt this - dst = jmp(dst, start); - *cont = dst - (cont + 1); - dst = zcycles(dst, 2); + jmp(code, start); + *cont = code->cur - (cont + 1); + cycles(&opts->gen, 2); //TODO: Implement half-carry - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_PV), SZ_B); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_PV), SZ_B); break; } case Z80_LDD: { - dst = zcycles(dst, 8); - dst = mov_rr(dst, opts->regs[Z80_HL], SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_read_byte); - dst = mov_rr(dst, opts->regs[Z80_DE], SCRATCH2, SZ_W); - dst = call(dst, (uint8_t *)z80_write_byte); - dst = zcycles(dst, 2); - dst = sub_ir(dst, 1, opts->regs[Z80_DE], SZ_W); - dst = sub_ir(dst, 1, opts->regs[Z80_HL], SZ_W); - dst = sub_ir(dst, 1, opts->regs[Z80_BC], SZ_W); + cycles(&opts->gen, 8); + mov_rr(code, opts->regs[Z80_HL], opts->gen.scratch1, SZ_W); + call(code, opts->read_8); + mov_rr(code, opts->regs[Z80_DE], opts->gen.scratch2, SZ_W); + call(code, opts->write_8); + cycles(&opts->gen, 2); + sub_ir(code, 1, opts->regs[Z80_DE], SZ_W); + sub_ir(code, 1, opts->regs[Z80_HL], SZ_W); + sub_ir(code, 1, opts->regs[Z80_BC], SZ_W); //TODO: Implement half-carry - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); - dst = setcc_rdisp8(dst, CC_NZ, CONTEXT, zf_off(ZF_PV)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_NZ, opts->gen.context_reg, zf_off(ZF_PV)); break; } case Z80_LDDR: { - dst = zcycles(dst, 8); - dst = mov_rr(dst, opts->regs[Z80_HL], SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_read_byte); - dst = mov_rr(dst, opts->regs[Z80_DE], SCRATCH2, SZ_W); - dst = call(dst, (uint8_t *)z80_write_byte); - dst = sub_ir(dst, 1, opts->regs[Z80_DE], SZ_W); - dst = sub_ir(dst, 1, opts->regs[Z80_HL], SZ_W); - - dst = sub_ir(dst, 1, opts->regs[Z80_BC], SZ_W); - uint8_t * cont = dst+1; - dst = jcc(dst, CC_Z, dst+2); - dst = zcycles(dst, 7); + cycles(&opts->gen, 8); + mov_rr(code, opts->regs[Z80_HL], opts->gen.scratch1, SZ_W); + call(code, opts->read_8); + mov_rr(code, opts->regs[Z80_DE], opts->gen.scratch2, SZ_W); + call(code, opts->write_8); + sub_ir(code, 1, opts->regs[Z80_DE], SZ_W); + sub_ir(code, 1, opts->regs[Z80_HL], SZ_W); + + sub_ir(code, 1, opts->regs[Z80_BC], SZ_W); + uint8_t * cont = code->cur+1; + jcc(code, CC_Z, code->cur+2); + cycles(&opts->gen, 7); //TODO: Figure out what the flag state should be here //TODO: Figure out whether an interrupt can interrupt this - dst = jmp(dst, start); - *cont = dst - (cont + 1); - dst = zcycles(dst, 2); + jmp(code, start); + *cont = code->cur - (cont + 1); + cycles(&opts->gen, 2); //TODO: Implement half-carry - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_PV), SZ_B); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_PV), SZ_B); break; } /*case Z80_CPI: @@ -608,634 +575,644 @@ uint8_t * translate_z80inst(z80inst * inst, uint8_t * dst, z80_context * context case Z80_CPDR: break;*/ case Z80_ADD: - cycles = 4; + num_cycles = 4; if (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) { - cycles += 12; + num_cycles += 12; } else if(inst->addr_mode == Z80_IMMED) { - cycles += 3; + num_cycles += 3; } else if(z80_size(inst) == SZ_W) { - cycles += 4; + num_cycles += 4; } - dst = zcycles(dst, cycles); - dst = translate_z80_reg(inst, &dst_op, dst, opts); - dst = translate_z80_ea(inst, &src_op, dst, opts, READ, DONT_MODIFY); + cycles(&opts->gen, num_cycles); + translate_z80_reg(inst, &dst_op, opts); + translate_z80_ea(inst, &src_op, opts, READ, DONT_MODIFY); if (src_op.mode == MODE_REG_DIRECT) { - dst = add_rr(dst, src_op.base, dst_op.base, z80_size(inst)); + add_rr(code, src_op.base, dst_op.base, z80_size(inst)); } else { - dst = add_ir(dst, src_op.disp, dst_op.base, z80_size(inst)); + add_ir(code, src_op.disp, dst_op.base, z80_size(inst)); } - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag if (z80_size(inst) == SZ_B) { - dst = setcc_rdisp8(dst, CC_O, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + setcc_rdisp(code, CC_O, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); } - dst = z80_save_reg(dst, inst, opts); - dst = z80_save_ea(dst, inst, opts); + z80_save_reg(inst, opts); + z80_save_ea(code, inst, opts); break; case Z80_ADC: - cycles = 4; + num_cycles = 4; if (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) { - cycles += 12; + num_cycles += 12; } else if(inst->addr_mode == Z80_IMMED) { - cycles += 3; + num_cycles += 3; } else if(z80_size(inst) == SZ_W) { - cycles += 4; + num_cycles += 4; } - dst = zcycles(dst, cycles); - dst = translate_z80_reg(inst, &dst_op, dst, opts); - dst = translate_z80_ea(inst, &src_op, dst, opts, READ, DONT_MODIFY); - dst = bt_irdisp8(dst, 0, CONTEXT, zf_off(ZF_C), SZ_B); + cycles(&opts->gen, num_cycles); + translate_z80_reg(inst, &dst_op, opts); + translate_z80_ea(inst, &src_op, opts, READ, DONT_MODIFY); + bt_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_C), SZ_B); if (src_op.mode == MODE_REG_DIRECT) { - dst = adc_rr(dst, src_op.base, dst_op.base, z80_size(inst)); + adc_rr(code, src_op.base, dst_op.base, z80_size(inst)); } else { - dst = adc_ir(dst, src_op.disp, dst_op.base, z80_size(inst)); + adc_ir(code, src_op.disp, dst_op.base, z80_size(inst)); } - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag - dst = setcc_rdisp8(dst, CC_O, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); - dst = z80_save_reg(dst, inst, opts); - dst = z80_save_ea(dst, inst, opts); + setcc_rdisp(code, CC_O, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); + z80_save_reg(inst, opts); + z80_save_ea(code, inst, opts); break; case Z80_SUB: - cycles = 4; + num_cycles = 4; if (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) { - cycles += 12; + num_cycles += 12; } else if(inst->addr_mode == Z80_IMMED) { - cycles += 3; + num_cycles += 3; } - dst = zcycles(dst, cycles); - dst = translate_z80_reg(inst, &dst_op, dst, opts); - dst = translate_z80_ea(inst, &src_op, dst, opts, READ, DONT_MODIFY); + cycles(&opts->gen, num_cycles); + translate_z80_reg(inst, &dst_op, opts); + translate_z80_ea(inst, &src_op, opts, READ, DONT_MODIFY); if (src_op.mode == MODE_REG_DIRECT) { - dst = sub_rr(dst, src_op.base, dst_op.base, z80_size(inst)); + sub_rr(code, src_op.base, dst_op.base, z80_size(inst)); } else { - dst = sub_ir(dst, src_op.disp, dst_op.base, z80_size(inst)); + sub_ir(code, src_op.disp, dst_op.base, z80_size(inst)); } - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = mov_irdisp8(dst, 1, CONTEXT, zf_off(ZF_N), SZ_B); - dst = setcc_rdisp8(dst, CC_O, CONTEXT, zf_off(ZF_PV)); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + mov_irdisp(code, 1, opts->gen.context_reg, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_O, opts->gen.context_reg, zf_off(ZF_PV)); //TODO: Implement half-carry flag - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); - dst = z80_save_reg(dst, inst, opts); - dst = z80_save_ea(dst, inst, opts); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); + z80_save_reg(inst, opts); + z80_save_ea(code, inst, opts); break; case Z80_SBC: - cycles = 4; + num_cycles = 4; if (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) { - cycles += 12; + num_cycles += 12; } else if(inst->addr_mode == Z80_IMMED) { - cycles += 3; + num_cycles += 3; } else if(z80_size(inst) == SZ_W) { - cycles += 4; + num_cycles += 4; } - dst = zcycles(dst, cycles); - dst = translate_z80_reg(inst, &dst_op, dst, opts); - dst = translate_z80_ea(inst, &src_op, dst, opts, READ, DONT_MODIFY); - dst = bt_irdisp8(dst, 0, CONTEXT, zf_off(ZF_C), SZ_B); + cycles(&opts->gen, num_cycles); + translate_z80_reg(inst, &dst_op, opts); + translate_z80_ea(inst, &src_op, opts, READ, DONT_MODIFY); + bt_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_C), SZ_B); if (src_op.mode == MODE_REG_DIRECT) { - dst = sbb_rr(dst, src_op.base, dst_op.base, z80_size(inst)); + sbb_rr(code, src_op.base, dst_op.base, z80_size(inst)); } else { - dst = sbb_ir(dst, src_op.disp, dst_op.base, z80_size(inst)); + sbb_ir(code, src_op.disp, dst_op.base, z80_size(inst)); } - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = mov_irdisp8(dst, 1, CONTEXT, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + mov_irdisp(code, 1, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag - dst = setcc_rdisp8(dst, CC_O, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); - dst = z80_save_reg(dst, inst, opts); - dst = z80_save_ea(dst, inst, opts); + setcc_rdisp(code, CC_O, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); + z80_save_reg(inst, opts); + z80_save_ea(code, inst, opts); break; case Z80_AND: - cycles = 4; + num_cycles = 4; if (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) { - cycles += 12; + num_cycles += 12; } else if(inst->addr_mode == Z80_IMMED) { - cycles += 3; + num_cycles += 3; } else if(z80_size(inst) == SZ_W) { - cycles += 4; + num_cycles += 4; } - dst = zcycles(dst, cycles); - dst = translate_z80_reg(inst, &dst_op, dst, opts); - dst = translate_z80_ea(inst, &src_op, dst, opts, READ, DONT_MODIFY); + cycles(&opts->gen, num_cycles); + translate_z80_reg(inst, &dst_op, opts); + translate_z80_ea(inst, &src_op, opts, READ, DONT_MODIFY); if (src_op.mode == MODE_REG_DIRECT) { - dst = and_rr(dst, src_op.base, dst_op.base, z80_size(inst)); + and_rr(code, src_op.base, dst_op.base, z80_size(inst)); } else { - dst = and_ir(dst, src_op.disp, dst_op.base, z80_size(inst)); + and_ir(code, src_op.disp, dst_op.base, z80_size(inst)); } //TODO: Cleanup flags - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag if (z80_size(inst) == SZ_B) { - dst = setcc_rdisp8(dst, CC_P, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + setcc_rdisp(code, CC_P, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); } - dst = z80_save_reg(dst, inst, opts); - dst = z80_save_ea(dst, inst, opts); + z80_save_reg(inst, opts); + z80_save_ea(code, inst, opts); break; case Z80_OR: - cycles = 4; + num_cycles = 4; if (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) { - cycles += 12; + num_cycles += 12; } else if(inst->addr_mode == Z80_IMMED) { - cycles += 3; + num_cycles += 3; } else if(z80_size(inst) == SZ_W) { - cycles += 4; + num_cycles += 4; } - dst = zcycles(dst, cycles); - dst = translate_z80_reg(inst, &dst_op, dst, opts); - dst = translate_z80_ea(inst, &src_op, dst, opts, READ, DONT_MODIFY); + cycles(&opts->gen, num_cycles); + translate_z80_reg(inst, &dst_op, opts); + translate_z80_ea(inst, &src_op, opts, READ, DONT_MODIFY); if (src_op.mode == MODE_REG_DIRECT) { - dst = or_rr(dst, src_op.base, dst_op.base, z80_size(inst)); + or_rr(code, src_op.base, dst_op.base, z80_size(inst)); } else { - dst = or_ir(dst, src_op.disp, dst_op.base, z80_size(inst)); + or_ir(code, src_op.disp, dst_op.base, z80_size(inst)); } //TODO: Cleanup flags - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag if (z80_size(inst) == SZ_B) { - dst = setcc_rdisp8(dst, CC_P, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + setcc_rdisp(code, CC_P, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); } - dst = z80_save_reg(dst, inst, opts); - dst = z80_save_ea(dst, inst, opts); + z80_save_reg(inst, opts); + z80_save_ea(code, inst, opts); break; case Z80_XOR: - cycles = 4; + num_cycles = 4; if (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) { - cycles += 12; + num_cycles += 12; } else if(inst->addr_mode == Z80_IMMED) { - cycles += 3; + num_cycles += 3; } else if(z80_size(inst) == SZ_W) { - cycles += 4; + num_cycles += 4; } - dst = zcycles(dst, cycles); - dst = translate_z80_reg(inst, &dst_op, dst, opts); - dst = translate_z80_ea(inst, &src_op, dst, opts, READ, DONT_MODIFY); + cycles(&opts->gen, num_cycles); + translate_z80_reg(inst, &dst_op, opts); + translate_z80_ea(inst, &src_op, opts, READ, DONT_MODIFY); if (src_op.mode == MODE_REG_DIRECT) { - dst = xor_rr(dst, src_op.base, dst_op.base, z80_size(inst)); + xor_rr(code, src_op.base, dst_op.base, z80_size(inst)); } else { - dst = xor_ir(dst, src_op.disp, dst_op.base, z80_size(inst)); + xor_ir(code, src_op.disp, dst_op.base, z80_size(inst)); } //TODO: Cleanup flags - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag if (z80_size(inst) == SZ_B) { - dst = setcc_rdisp8(dst, CC_P, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + setcc_rdisp(code, CC_P, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); } - dst = z80_save_reg(dst, inst, opts); - dst = z80_save_ea(dst, inst, opts); + z80_save_reg(inst, opts); + z80_save_ea(code, inst, opts); break; case Z80_CP: - cycles = 4; + num_cycles = 4; if (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) { - cycles += 12; + num_cycles += 12; } else if(inst->addr_mode == Z80_IMMED) { - cycles += 3; + num_cycles += 3; } - dst = zcycles(dst, cycles); - dst = translate_z80_reg(inst, &dst_op, dst, opts); - dst = translate_z80_ea(inst, &src_op, dst, opts, READ, DONT_MODIFY); + cycles(&opts->gen, num_cycles); + translate_z80_reg(inst, &dst_op, opts); + translate_z80_ea(inst, &src_op, opts, READ, DONT_MODIFY); if (src_op.mode == MODE_REG_DIRECT) { - dst = cmp_rr(dst, src_op.base, dst_op.base, z80_size(inst)); + cmp_rr(code, src_op.base, dst_op.base, z80_size(inst)); } else { - dst = cmp_ir(dst, src_op.disp, dst_op.base, z80_size(inst)); + cmp_ir(code, src_op.disp, dst_op.base, z80_size(inst)); } - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = mov_irdisp8(dst, 1, CONTEXT, zf_off(ZF_N), SZ_B); - dst = setcc_rdisp8(dst, CC_O, CONTEXT, zf_off(ZF_PV)); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + mov_irdisp(code, 1, opts->gen.context_reg, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_O, opts->gen.context_reg, zf_off(ZF_PV)); //TODO: Implement half-carry flag - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); - dst = z80_save_reg(dst, inst, opts); - dst = z80_save_ea(dst, inst, opts); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); + z80_save_reg(inst, opts); + z80_save_ea(code, inst, opts); break; case Z80_INC: - cycles = 4; + num_cycles = 4; if (inst->reg == Z80_IX || inst->reg == Z80_IY) { - cycles += 6; + num_cycles += 6; } else if(z80_size(inst) == SZ_W) { - cycles += 2; + num_cycles += 2; } else if(inst->reg == Z80_IXH || inst->reg == Z80_IXL || inst->reg == Z80_IYH || inst->reg == Z80_IYL || inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) { - cycles += 4; + num_cycles += 4; } - dst = zcycles(dst, cycles); - dst = translate_z80_reg(inst, &dst_op, dst, opts); + cycles(&opts->gen, num_cycles); + translate_z80_reg(inst, &dst_op, opts); if (dst_op.mode == MODE_UNUSED) { - dst = translate_z80_ea(inst, &dst_op, dst, opts, READ, MODIFY); + translate_z80_ea(inst, &dst_op, opts, READ, MODIFY); } - dst = add_ir(dst, 1, dst_op.base, z80_size(inst)); + add_ir(code, 1, dst_op.base, z80_size(inst)); if (z80_size(inst) == SZ_B) { - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag - dst = setcc_rdisp8(dst, CC_O, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + setcc_rdisp(code, CC_O, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); } - dst = z80_save_reg(dst, inst, opts); - dst = z80_save_ea(dst, inst, opts); - dst = z80_save_result(dst, inst); + z80_save_reg(inst, opts); + z80_save_ea(code, inst, opts); + z80_save_result(opts, inst); break; case Z80_DEC: - cycles = 4; + num_cycles = 4; if (inst->reg == Z80_IX || inst->reg == Z80_IY) { - cycles += 6; + num_cycles += 6; } else if(z80_size(inst) == SZ_W) { - cycles += 2; + num_cycles += 2; } else if(inst->reg == Z80_IXH || inst->reg == Z80_IXL || inst->reg == Z80_IYH || inst->reg == Z80_IYL || inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) { - cycles += 4; + num_cycles += 4; } - dst = zcycles(dst, cycles); - dst = translate_z80_reg(inst, &dst_op, dst, opts); + cycles(&opts->gen, num_cycles); + translate_z80_reg(inst, &dst_op, opts); if (dst_op.mode == MODE_UNUSED) { - dst = translate_z80_ea(inst, &dst_op, dst, opts, READ, MODIFY); + translate_z80_ea(inst, &dst_op, opts, READ, MODIFY); } - dst = sub_ir(dst, 1, dst_op.base, z80_size(inst)); + sub_ir(code, 1, dst_op.base, z80_size(inst)); if (z80_size(inst) == SZ_B) { - dst = mov_irdisp8(dst, 1, CONTEXT, zf_off(ZF_N), SZ_B); + mov_irdisp(code, 1, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag - dst = setcc_rdisp8(dst, CC_O, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + setcc_rdisp(code, CC_O, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); } - dst = z80_save_reg(dst, inst, opts); - dst = z80_save_ea(dst, inst, opts); - dst = z80_save_result(dst, inst); + z80_save_reg(inst, opts); + z80_save_ea(code, inst, opts); + z80_save_result(opts, inst); break; //case Z80_DAA: case Z80_CPL: - dst = zcycles(dst, 4); - dst = not_r(dst, opts->regs[Z80_A], SZ_B); + cycles(&opts->gen, 4); + not_r(code, opts->regs[Z80_A], SZ_B); //TODO: Implement half-carry flag - dst = mov_irdisp8(dst, 1, CONTEXT, zf_off(ZF_N), SZ_B); + mov_irdisp(code, 1, opts->gen.context_reg, zf_off(ZF_N), SZ_B); break; case Z80_NEG: - dst = zcycles(dst, 8); - dst = neg_r(dst, opts->regs[Z80_A], SZ_B); + cycles(&opts->gen, 8); + neg_r(code, opts->regs[Z80_A], SZ_B); //TODO: Implement half-carry flag - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = setcc_rdisp8(dst, CC_O, CONTEXT, zf_off(ZF_PV)); - dst = mov_irdisp8(dst, 1, CONTEXT, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + setcc_rdisp(code, CC_O, opts->gen.context_reg, zf_off(ZF_PV)); + mov_irdisp(code, 1, opts->gen.context_reg, zf_off(ZF_N), SZ_B); break; case Z80_CCF: - dst = zcycles(dst, 4); - dst = xor_irdisp8(dst, 1, CONTEXT, zf_off(ZF_C), SZ_B); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + cycles(&opts->gen, 4); + xor_irdisp(code, 1, opts->gen.context_reg, zf_off(ZF_C), SZ_B); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag break; case Z80_SCF: - dst = zcycles(dst, 4); - dst = mov_irdisp8(dst, 1, CONTEXT, zf_off(ZF_C), SZ_B); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + cycles(&opts->gen, 4); + mov_irdisp(code, 1, opts->gen.context_reg, zf_off(ZF_C), SZ_B); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag break; case Z80_NOP: if (inst->immed == 42) { - dst = call(dst, (uint8_t *)z80_save_context); - dst = mov_rr(dst, CONTEXT, RDI, SZ_Q); - dst = jmp(dst, (uint8_t *)z80_print_regs_exit); + call(code, opts->gen.save_context); + mov_rr(code, opts->gen.context_reg, RDI, SZ_Q); + jmp(code, (uint8_t *)z80_print_regs_exit); } else { - dst = zcycles(dst, 4 * inst->immed); + cycles(&opts->gen, 4 * inst->immed); } break; - case Z80_HALT: - dst = zcycles(dst, 4); - dst = mov_ir(dst, address, SCRATCH1, SZ_W); - uint8_t * call_inst = dst; - dst = call(dst, (uint8_t *)z80_halt); - dst = jmp(dst, call_inst); + case Z80_HALT: { + cycles(&opts->gen, 4); + mov_ir(code, address, opts->gen.scratch1, SZ_W); + uint8_t * call_inst = code->cur; + mov_rr(code, opts->gen.limit, opts->gen.scratch2, SZ_D); + sub_rr(code, opts->gen.cycles, opts->gen.scratch2, SZ_D); + and_ir(code, 0xFFFFFFFC, opts->gen.scratch2, SZ_D); + add_rr(code, opts->gen.scratch2, opts->gen.cycles, SZ_D); + cmp_rr(code, opts->gen.limit, opts->gen.cycles, SZ_D); + code_ptr skip_last = code->cur+1; + jcc(code, CC_NB, code->cur+2); + cycles(&opts->gen, 4); + *skip_last = code->cur - (skip_last+1); + call(code, opts->gen.handle_cycle_limit_int); + jmp(code, call_inst); break; + } case Z80_DI: - dst = zcycles(dst, 4); - dst = mov_irdisp8(dst, 0, CONTEXT, offsetof(z80_context, iff1), SZ_B); - dst = mov_irdisp8(dst, 0, CONTEXT, offsetof(z80_context, iff2), SZ_B); - dst = mov_rdisp8r(dst, CONTEXT, offsetof(z80_context, sync_cycle), ZLIMIT, SZ_D); - dst = mov_irdisp8(dst, 0xFFFFFFFF, CONTEXT, offsetof(z80_context, int_cycle), SZ_D); + cycles(&opts->gen, 4); + mov_irdisp(code, 0, opts->gen.context_reg, offsetof(z80_context, iff1), SZ_B); + mov_irdisp(code, 0, opts->gen.context_reg, offsetof(z80_context, iff2), SZ_B); + mov_rdispr(code, opts->gen.context_reg, offsetof(z80_context, sync_cycle), opts->gen.limit, SZ_D); + mov_irdisp(code, 0xFFFFFFFF, opts->gen.context_reg, offsetof(z80_context, int_cycle), SZ_D); break; case Z80_EI: - dst = zcycles(dst, 4); - dst = mov_rrdisp32(dst, ZCYCLES, CONTEXT, offsetof(z80_context, int_enable_cycle), SZ_D); - dst = mov_irdisp8(dst, 1, CONTEXT, offsetof(z80_context, iff1), SZ_B); - dst = mov_irdisp8(dst, 1, CONTEXT, offsetof(z80_context, iff2), SZ_B); + cycles(&opts->gen, 4); + mov_rrdisp(code, opts->gen.cycles, opts->gen.context_reg, offsetof(z80_context, int_enable_cycle), SZ_D); + mov_irdisp(code, 1, opts->gen.context_reg, offsetof(z80_context, iff1), SZ_B); + mov_irdisp(code, 1, opts->gen.context_reg, offsetof(z80_context, iff2), SZ_B); //interrupt enable has a one-instruction latency, minimum instruction duration is 4 cycles - dst = add_irdisp32(dst, 4, CONTEXT, offsetof(z80_context, int_enable_cycle), SZ_D); - dst = call(dst, (uint8_t *)z80_do_sync); + add_irdisp(code, 4, opts->gen.context_reg, offsetof(z80_context, int_enable_cycle), SZ_D); + call(code, opts->do_sync); break; case Z80_IM: - dst = zcycles(dst, 4); - dst = mov_irdisp8(dst, inst->immed, CONTEXT, offsetof(z80_context, im), SZ_B); + cycles(&opts->gen, 4); + mov_irdisp(code, inst->immed, opts->gen.context_reg, offsetof(z80_context, im), SZ_B); break; case Z80_RLC: - cycles = inst->immed == 0 ? 4 : (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE ? 16 : 8); - dst = zcycles(dst, cycles); + num_cycles = inst->immed == 0 ? 4 : (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE ? 16 : 8); + cycles(&opts->gen, num_cycles); if (inst->addr_mode != Z80_UNUSED) { - dst = translate_z80_ea(inst, &dst_op, dst, opts, READ, MODIFY); - dst = translate_z80_reg(inst, &src_op, dst, opts); //For IX/IY variants that also write to a register - dst = zcycles(dst, 1); + translate_z80_ea(inst, &dst_op, opts, READ, MODIFY); + translate_z80_reg(inst, &src_op, opts); //For IX/IY variants that also write to a register + cycles(&opts->gen, 1); } else { src_op.mode = MODE_UNUSED; - dst = translate_z80_reg(inst, &dst_op, dst, opts); + translate_z80_reg(inst, &dst_op, opts); } - dst = rol_ir(dst, 1, dst_op.base, SZ_B); + rol_ir(code, 1, dst_op.base, SZ_B); if (src_op.mode != MODE_UNUSED) { - dst = mov_rr(dst, dst_op.base, src_op.base, SZ_B); + mov_rr(code, dst_op.base, src_op.base, SZ_B); } - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag if (inst->immed) { //rlca does not set these flags - dst = cmp_ir(dst, 0, dst_op.base, SZ_B); - dst = setcc_rdisp8(dst, CC_P, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + cmp_ir(code, 0, dst_op.base, SZ_B); + setcc_rdisp(code, CC_P, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); } if (inst->addr_mode != Z80_UNUSED) { - dst = z80_save_result(dst, inst); + z80_save_result(opts, inst); if (src_op.mode != MODE_UNUSED) { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } } else { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } break; case Z80_RL: - cycles = inst->immed == 0 ? 4 : (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE ? 16 : 8); - dst = zcycles(dst, cycles); + num_cycles = inst->immed == 0 ? 4 : (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE ? 16 : 8); + cycles(&opts->gen, num_cycles); if (inst->addr_mode != Z80_UNUSED) { - dst = translate_z80_ea(inst, &dst_op, dst, opts, READ, MODIFY); - dst = translate_z80_reg(inst, &src_op, dst, opts); //For IX/IY variants that also write to a register - dst = zcycles(dst, 1); + translate_z80_ea(inst, &dst_op, opts, READ, MODIFY); + translate_z80_reg(inst, &src_op, opts); //For IX/IY variants that also write to a register + cycles(&opts->gen, 1); } else { src_op.mode = MODE_UNUSED; - dst = translate_z80_reg(inst, &dst_op, dst, opts); + translate_z80_reg(inst, &dst_op, opts); } - dst = bt_irdisp8(dst, 0, CONTEXT, zf_off(ZF_C), SZ_B); - dst = rcl_ir(dst, 1, dst_op.base, SZ_B); + bt_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_C), SZ_B); + rcl_ir(code, 1, dst_op.base, SZ_B); if (src_op.mode != MODE_UNUSED) { - dst = mov_rr(dst, dst_op.base, src_op.base, SZ_B); + mov_rr(code, dst_op.base, src_op.base, SZ_B); } - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag if (inst->immed) { //rla does not set these flags - dst = cmp_ir(dst, 0, dst_op.base, SZ_B); - dst = setcc_rdisp8(dst, CC_P, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + cmp_ir(code, 0, dst_op.base, SZ_B); + setcc_rdisp(code, CC_P, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); } if (inst->addr_mode != Z80_UNUSED) { - dst = z80_save_result(dst, inst); + z80_save_result(opts, inst); if (src_op.mode != MODE_UNUSED) { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } } else { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } break; case Z80_RRC: - cycles = inst->immed == 0 ? 4 : (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE ? 16 : 8); - dst = zcycles(dst, cycles); + num_cycles = inst->immed == 0 ? 4 : (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE ? 16 : 8); + cycles(&opts->gen, num_cycles); if (inst->addr_mode != Z80_UNUSED) { - dst = translate_z80_ea(inst, &dst_op, dst, opts, READ, MODIFY); - dst = translate_z80_reg(inst, &src_op, dst, opts); //For IX/IY variants that also write to a register - dst = zcycles(dst, 1); + translate_z80_ea(inst, &dst_op, opts, READ, MODIFY); + translate_z80_reg(inst, &src_op, opts); //For IX/IY variants that also write to a register + cycles(&opts->gen, 1); } else { src_op.mode = MODE_UNUSED; - dst = translate_z80_reg(inst, &dst_op, dst, opts); + translate_z80_reg(inst, &dst_op, opts); } - dst = ror_ir(dst, 1, dst_op.base, SZ_B); + ror_ir(code, 1, dst_op.base, SZ_B); if (src_op.mode != MODE_UNUSED) { - dst = mov_rr(dst, dst_op.base, src_op.base, SZ_B); + mov_rr(code, dst_op.base, src_op.base, SZ_B); } - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag if (inst->immed) { //rrca does not set these flags - dst = cmp_ir(dst, 0, dst_op.base, SZ_B); - dst = setcc_rdisp8(dst, CC_P, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + cmp_ir(code, 0, dst_op.base, SZ_B); + setcc_rdisp(code, CC_P, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); } if (inst->addr_mode != Z80_UNUSED) { - dst = z80_save_result(dst, inst); + z80_save_result(opts, inst); if (src_op.mode != MODE_UNUSED) { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } } else { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } break; case Z80_RR: - cycles = inst->immed == 0 ? 4 : (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE ? 16 : 8); - dst = zcycles(dst, cycles); + num_cycles = inst->immed == 0 ? 4 : (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE ? 16 : 8); + cycles(&opts->gen, num_cycles); if (inst->addr_mode != Z80_UNUSED) { - dst = translate_z80_ea(inst, &dst_op, dst, opts, READ, MODIFY); - dst = translate_z80_reg(inst, &src_op, dst, opts); //For IX/IY variants that also write to a register - dst = zcycles(dst, 1); + translate_z80_ea(inst, &dst_op, opts, READ, MODIFY); + translate_z80_reg(inst, &src_op, opts); //For IX/IY variants that also write to a register + cycles(&opts->gen, 1); } else { src_op.mode = MODE_UNUSED; - dst = translate_z80_reg(inst, &dst_op, dst, opts); + translate_z80_reg(inst, &dst_op, opts); } - dst = bt_irdisp8(dst, 0, CONTEXT, zf_off(ZF_C), SZ_B); - dst = rcr_ir(dst, 1, dst_op.base, SZ_B); + bt_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_C), SZ_B); + rcr_ir(code, 1, dst_op.base, SZ_B); if (src_op.mode != MODE_UNUSED) { - dst = mov_rr(dst, dst_op.base, src_op.base, SZ_B); + mov_rr(code, dst_op.base, src_op.base, SZ_B); } - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag if (inst->immed) { //rra does not set these flags - dst = cmp_ir(dst, 0, dst_op.base, SZ_B); - dst = setcc_rdisp8(dst, CC_P, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + cmp_ir(code, 0, dst_op.base, SZ_B); + setcc_rdisp(code, CC_P, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); } if (inst->addr_mode != Z80_UNUSED) { - dst = z80_save_result(dst, inst); + z80_save_result(opts, inst); if (src_op.mode != MODE_UNUSED) { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } } else { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } break; case Z80_SLA: case Z80_SLL: - cycles = inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE ? 16 : 8; - dst = zcycles(dst, cycles); + num_cycles = inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE ? 16 : 8; + cycles(&opts->gen, num_cycles); if (inst->addr_mode != Z80_UNUSED) { - dst = translate_z80_ea(inst, &dst_op, dst, opts, READ, MODIFY); - dst = translate_z80_reg(inst, &src_op, dst, opts); //For IX/IY variants that also write to a register - dst = zcycles(dst, 1); + translate_z80_ea(inst, &dst_op, opts, READ, MODIFY); + translate_z80_reg(inst, &src_op, opts); //For IX/IY variants that also write to a register + cycles(&opts->gen, 1); } else { src_op.mode = MODE_UNUSED; - dst = translate_z80_reg(inst, &dst_op, dst, opts); + translate_z80_reg(inst, &dst_op, opts); } - dst = shl_ir(dst, 1, dst_op.base, SZ_B); - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); + shl_ir(code, 1, dst_op.base, SZ_B); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); if (inst->op == Z80_SLL) { - dst = or_ir(dst, 1, dst_op.base, SZ_B); + or_ir(code, 1, dst_op.base, SZ_B); } if (src_op.mode != MODE_UNUSED) { - dst = mov_rr(dst, dst_op.base, src_op.base, SZ_B); + mov_rr(code, dst_op.base, src_op.base, SZ_B); } - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag - dst = cmp_ir(dst, 0, dst_op.base, SZ_B); - dst = setcc_rdisp8(dst, CC_P, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + cmp_ir(code, 0, dst_op.base, SZ_B); + setcc_rdisp(code, CC_P, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); if (inst->addr_mode != Z80_UNUSED) { - dst = z80_save_result(dst, inst); + z80_save_result(opts, inst); if (src_op.mode != MODE_UNUSED) { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } } else { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } break; case Z80_SRA: - cycles = inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE ? 16 : 8; - dst = zcycles(dst, cycles); + num_cycles = inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE ? 16 : 8; + cycles(&opts->gen, num_cycles); if (inst->addr_mode != Z80_UNUSED) { - dst = translate_z80_ea(inst, &dst_op, dst, opts, READ, MODIFY); - dst = translate_z80_reg(inst, &src_op, dst, opts); //For IX/IY variants that also write to a register - dst = zcycles(dst, 1); + translate_z80_ea(inst, &dst_op, opts, READ, MODIFY); + translate_z80_reg(inst, &src_op, opts); //For IX/IY variants that also write to a register + cycles(&opts->gen, 1); } else { src_op.mode = MODE_UNUSED; - dst = translate_z80_reg(inst, &dst_op, dst, opts); + translate_z80_reg(inst, &dst_op, opts); } - dst = sar_ir(dst, 1, dst_op.base, SZ_B); + sar_ir(code, 1, dst_op.base, SZ_B); if (src_op.mode != MODE_UNUSED) { - dst = mov_rr(dst, dst_op.base, src_op.base, SZ_B); + mov_rr(code, dst_op.base, src_op.base, SZ_B); } - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag - dst = cmp_ir(dst, 0, dst_op.base, SZ_B); - dst = setcc_rdisp8(dst, CC_P, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + cmp_ir(code, 0, dst_op.base, SZ_B); + setcc_rdisp(code, CC_P, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); if (inst->addr_mode != Z80_UNUSED) { - dst = z80_save_result(dst, inst); + z80_save_result(opts, inst); if (src_op.mode != MODE_UNUSED) { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } } else { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } break; case Z80_SRL: - cycles = inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE ? 16 : 8; - dst = zcycles(dst, cycles); + num_cycles = inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE ? 16 : 8; + cycles(&opts->gen, num_cycles); if (inst->addr_mode != Z80_UNUSED) { - dst = translate_z80_ea(inst, &dst_op, dst, opts, READ, MODIFY); - dst = translate_z80_reg(inst, &src_op, dst, opts); //For IX/IY variants that also write to a register - dst = zcycles(dst, 1); + translate_z80_ea(inst, &dst_op, opts, READ, MODIFY); + translate_z80_reg(inst, &src_op, opts); //For IX/IY variants that also write to a register + cycles(&opts->gen, 1); } else { src_op.mode = MODE_UNUSED; - dst = translate_z80_reg(inst, &dst_op, dst, opts); + translate_z80_reg(inst, &dst_op, opts); } - dst = shr_ir(dst, 1, dst_op.base, SZ_B); + shr_ir(code, 1, dst_op.base, SZ_B); if (src_op.mode != MODE_UNUSED) { - dst = mov_rr(dst, dst_op.base, src_op.base, SZ_B); + mov_rr(code, dst_op.base, src_op.base, SZ_B); } - dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_C, opts->gen.context_reg, zf_off(ZF_C)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag - dst = cmp_ir(dst, 0, dst_op.base, SZ_B); - dst = setcc_rdisp8(dst, CC_P, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + cmp_ir(code, 0, dst_op.base, SZ_B); + setcc_rdisp(code, CC_P, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); if (inst->addr_mode != Z80_UNUSED) { - dst = z80_save_result(dst, inst); + z80_save_result(opts, inst); if (src_op.mode != MODE_UNUSED) { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } } else { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } break; case Z80_RLD: - dst = zcycles(dst, 8); - dst = mov_rr(dst, opts->regs[Z80_HL], SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_read_byte); + cycles(&opts->gen, 8); + mov_rr(code, opts->regs[Z80_HL], opts->gen.scratch1, SZ_W); + call(code, opts->read_8); //Before: (HL) = 0x12, A = 0x34 //After: (HL) = 0x24, A = 0x31 - dst = mov_rr(dst, opts->regs[Z80_A], SCRATCH2, SZ_B); - dst = shl_ir(dst, 4, SCRATCH1, SZ_W); - dst = and_ir(dst, 0xF, SCRATCH2, SZ_W); - dst = and_ir(dst, 0xFFF, SCRATCH1, SZ_W); - dst = and_ir(dst, 0xF0, opts->regs[Z80_A], SZ_B); - dst = or_rr(dst, SCRATCH2, SCRATCH1, SZ_W); - //SCRATCH1 = 0x0124 - dst = ror_ir(dst, 8, SCRATCH1, SZ_W); - dst = zcycles(dst, 4); - dst = or_rr(dst, SCRATCH1, opts->regs[Z80_A], SZ_B); + mov_rr(code, opts->regs[Z80_A], opts->gen.scratch2, SZ_B); + shl_ir(code, 4, opts->gen.scratch1, SZ_W); + and_ir(code, 0xF, opts->gen.scratch2, SZ_W); + and_ir(code, 0xFFF, opts->gen.scratch1, SZ_W); + and_ir(code, 0xF0, opts->regs[Z80_A], SZ_B); + or_rr(code, opts->gen.scratch2, opts->gen.scratch1, SZ_W); + //opts->gen.scratch1 = 0x0124 + ror_ir(code, 8, opts->gen.scratch1, SZ_W); + cycles(&opts->gen, 4); + or_rr(code, opts->gen.scratch1, opts->regs[Z80_A], SZ_B); //set flags //TODO: Implement half-carry flag - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); - dst = setcc_rdisp8(dst, CC_P, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); - - dst = mov_rr(dst, opts->regs[Z80_HL], SCRATCH2, SZ_W); - dst = ror_ir(dst, 8, SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_write_byte); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_P, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); + + mov_rr(code, opts->regs[Z80_HL], opts->gen.scratch2, SZ_W); + ror_ir(code, 8, opts->gen.scratch1, SZ_W); + call(code, opts->write_8); break; case Z80_RRD: - dst = zcycles(dst, 8); - dst = mov_rr(dst, opts->regs[Z80_HL], SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_read_byte); + cycles(&opts->gen, 8); + mov_rr(code, opts->regs[Z80_HL], opts->gen.scratch1, SZ_W); + call(code, opts->read_8); //Before: (HL) = 0x12, A = 0x34 //After: (HL) = 0x41, A = 0x32 - dst = movzx_rr(dst, opts->regs[Z80_A], SCRATCH2, SZ_B, SZ_W); - dst = ror_ir(dst, 4, SCRATCH1, SZ_W); - dst = shl_ir(dst, 4, SCRATCH2, SZ_W); - dst = and_ir(dst, 0xF00F, SCRATCH1, SZ_W); - dst = and_ir(dst, 0xF0, opts->regs[Z80_A], SZ_B); - //SCRATCH1 = 0x2001 - //SCRATCH2 = 0x0040 - dst = or_rr(dst, SCRATCH2, SCRATCH1, SZ_W); - //SCRATCH1 = 0x2041 - dst = ror_ir(dst, 8, SCRATCH1, SZ_W); - dst = zcycles(dst, 4); - dst = shr_ir(dst, 4, SCRATCH1, SZ_B); - dst = or_rr(dst, SCRATCH1, opts->regs[Z80_A], SZ_B); + movzx_rr(code, opts->regs[Z80_A], opts->gen.scratch2, SZ_B, SZ_W); + ror_ir(code, 4, opts->gen.scratch1, SZ_W); + shl_ir(code, 4, opts->gen.scratch2, SZ_W); + and_ir(code, 0xF00F, opts->gen.scratch1, SZ_W); + and_ir(code, 0xF0, opts->regs[Z80_A], SZ_B); + //opts->gen.scratch1 = 0x2001 + //opts->gen.scratch2 = 0x0040 + or_rr(code, opts->gen.scratch2, opts->gen.scratch1, SZ_W); + //opts->gen.scratch1 = 0x2041 + ror_ir(code, 8, opts->gen.scratch1, SZ_W); + cycles(&opts->gen, 4); + shr_ir(code, 4, opts->gen.scratch1, SZ_B); + or_rr(code, opts->gen.scratch1, opts->regs[Z80_A], SZ_B); //set flags //TODO: Implement half-carry flag - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); - dst = setcc_rdisp8(dst, CC_P, CONTEXT, zf_off(ZF_PV)); - dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); - - dst = mov_rr(dst, opts->regs[Z80_HL], SCRATCH2, SZ_W); - dst = ror_ir(dst, 8, SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_write_byte); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); + setcc_rdisp(code, CC_P, opts->gen.context_reg, zf_off(ZF_PV)); + setcc_rdisp(code, CC_Z, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); + + mov_rr(code, opts->regs[Z80_HL], opts->gen.scratch2, SZ_W); + ror_ir(code, 8, opts->gen.scratch1, SZ_W); + call(code, opts->write_8); break; case Z80_BIT: { - cycles = (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) ? 8 : 16; - dst = zcycles(dst, cycles); + num_cycles = (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) ? 8 : 16; + cycles(&opts->gen, num_cycles); uint8_t bit; if ((inst->addr_mode & 0x1F) == Z80_REG && opts->regs[inst->ea_reg] >= AH && opts->regs[inst->ea_reg] <= BH) { src_op.base = opts->regs[z80_word_reg(inst->ea_reg)]; @@ -1244,27 +1221,27 @@ uint8_t * translate_z80inst(z80inst * inst, uint8_t * dst, z80_context * context } else { size = SZ_B; bit = inst->immed; - dst = translate_z80_ea(inst, &src_op, dst, opts, READ, DONT_MODIFY); + translate_z80_ea(inst, &src_op, opts, READ, DONT_MODIFY); } if (inst->addr_mode != Z80_REG) { //Reads normally take 3 cycles, but the read at the end of a bit instruction takes 4 - dst = zcycles(dst, 1); + cycles(&opts->gen, 1); } - dst = bt_ir(dst, bit, src_op.base, size); - dst = setcc_rdisp8(dst, CC_NC, CONTEXT, zf_off(ZF_Z)); - dst = setcc_rdisp8(dst, CC_NC, CONTEXT, zf_off(ZF_PV)); - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); + bt_ir(code, bit, src_op.base, size); + setcc_rdisp(code, CC_NC, opts->gen.context_reg, zf_off(ZF_Z)); + setcc_rdisp(code, CC_NC, opts->gen.context_reg, zf_off(ZF_PV)); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_N), SZ_B); if (inst->immed == 7) { - dst = cmp_ir(dst, 0, src_op.base, size); - dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + cmp_ir(code, 0, src_op.base, size); + setcc_rdisp(code, CC_S, opts->gen.context_reg, zf_off(ZF_S)); } else { - dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_S), SZ_B); + mov_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_S), SZ_B); } break; } case Z80_SET: { - cycles = (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) ? 8 : 16; - dst = zcycles(dst, cycles); + num_cycles = (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) ? 8 : 16; + cycles(&opts->gen, num_cycles); uint8_t bit; if ((inst->addr_mode & 0x1F) == Z80_REG && opts->regs[inst->ea_reg] >= AH && opts->regs[inst->ea_reg] <= BH) { src_op.base = opts->regs[z80_word_reg(inst->ea_reg)]; @@ -1273,40 +1250,40 @@ uint8_t * translate_z80inst(z80inst * inst, uint8_t * dst, z80_context * context } else { size = SZ_B; bit = inst->immed; - dst = translate_z80_ea(inst, &src_op, dst, opts, READ, MODIFY); + translate_z80_ea(inst, &src_op, opts, READ, MODIFY); } if (inst->reg != Z80_USE_IMMED) { - dst = translate_z80_reg(inst, &dst_op, dst, opts); + translate_z80_reg(inst, &dst_op, opts); } if (inst->addr_mode != Z80_REG) { //Reads normally take 3 cycles, but the read in the middle of a set instruction takes 4 - dst = zcycles(dst, 1); + cycles(&opts->gen, 1); } - dst = bts_ir(dst, bit, src_op.base, size); + bts_ir(code, bit, src_op.base, size); if (inst->reg != Z80_USE_IMMED) { if (size == SZ_W) { if (dst_op.base >= R8) { - dst = ror_ir(dst, 8, src_op.base, SZ_W); - dst = mov_rr(dst, opts->regs[z80_low_reg(inst->ea_reg)], dst_op.base, SZ_B); - dst = ror_ir(dst, 8, src_op.base, SZ_W); + ror_ir(code, 8, src_op.base, SZ_W); + mov_rr(code, opts->regs[z80_low_reg(inst->ea_reg)], dst_op.base, SZ_B); + ror_ir(code, 8, src_op.base, SZ_W); } else { - dst = mov_rr(dst, opts->regs[inst->ea_reg], dst_op.base, SZ_B); + mov_rr(code, opts->regs[inst->ea_reg], dst_op.base, SZ_B); } } else { - dst = mov_rr(dst, src_op.base, dst_op.base, SZ_B); + mov_rr(code, src_op.base, dst_op.base, SZ_B); } } if ((inst->addr_mode & 0x1F) != Z80_REG) { - dst = z80_save_result(dst, inst); + z80_save_result(opts, inst); if (inst->reg != Z80_USE_IMMED) { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } } break; } case Z80_RES: { - cycles = (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) ? 8 : 16; - dst = zcycles(dst, cycles); + num_cycles = (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) ? 8 : 16; + cycles(&opts->gen, num_cycles); uint8_t bit; if ((inst->addr_mode & 0x1F) == Z80_REG && opts->regs[inst->ea_reg] >= AH && opts->regs[inst->ea_reg] <= BH) { src_op.base = opts->regs[z80_word_reg(inst->ea_reg)]; @@ -1315,361 +1292,361 @@ uint8_t * translate_z80inst(z80inst * inst, uint8_t * dst, z80_context * context } else { size = SZ_B; bit = inst->immed; - dst = translate_z80_ea(inst, &src_op, dst, opts, READ, MODIFY); + translate_z80_ea(inst, &src_op, opts, READ, MODIFY); } if (inst->reg != Z80_USE_IMMED) { - dst = translate_z80_reg(inst, &dst_op, dst, opts); + translate_z80_reg(inst, &dst_op, opts); } if (inst->addr_mode != Z80_REG) { //Reads normally take 3 cycles, but the read in the middle of a set instruction takes 4 - dst = zcycles(dst, 1); + cycles(&opts->gen, 1); } - dst = btr_ir(dst, bit, src_op.base, size); + btr_ir(code, bit, src_op.base, size); if (inst->reg != Z80_USE_IMMED) { if (size == SZ_W) { if (dst_op.base >= R8) { - dst = ror_ir(dst, 8, src_op.base, SZ_W); - dst = mov_rr(dst, opts->regs[z80_low_reg(inst->ea_reg)], dst_op.base, SZ_B); - dst = ror_ir(dst, 8, src_op.base, SZ_W); + ror_ir(code, 8, src_op.base, SZ_W); + mov_rr(code, opts->regs[z80_low_reg(inst->ea_reg)], dst_op.base, SZ_B); + ror_ir(code, 8, src_op.base, SZ_W); } else { - dst = mov_rr(dst, opts->regs[inst->ea_reg], dst_op.base, SZ_B); + mov_rr(code, opts->regs[inst->ea_reg], dst_op.base, SZ_B); } } else { - dst = mov_rr(dst, src_op.base, dst_op.base, SZ_B); + mov_rr(code, src_op.base, dst_op.base, SZ_B); } } if (inst->addr_mode != Z80_REG) { - dst = z80_save_result(dst, inst); + z80_save_result(opts, inst); if (inst->reg != Z80_USE_IMMED) { - dst = z80_save_reg(dst, inst, opts); + z80_save_reg(inst, opts); } } break; } case Z80_JP: { - cycles = 4; + num_cycles = 4; if (inst->addr_mode != Z80_REG_INDIRECT) { - cycles += 6; + num_cycles += 6; } else if(inst->ea_reg == Z80_IX || inst->ea_reg == Z80_IY) { - cycles += 4; + num_cycles += 4; } - dst = zcycles(dst, cycles); + cycles(&opts->gen, num_cycles); if (inst->addr_mode != Z80_REG_INDIRECT && inst->immed < 0x4000) { - uint8_t * call_dst = z80_get_native_address(context, inst->immed); + code_ptr call_dst = z80_get_native_address(context, inst->immed); if (!call_dst) { - opts->deferred = defer_address(opts->deferred, inst->immed, dst + 1); + opts->gen.deferred = defer_address(opts->gen.deferred, inst->immed, code->cur + 1); //fake address to force large displacement - call_dst = dst + 256; + call_dst = code->cur + 256; } - dst = jmp(dst, call_dst); + jmp(code, call_dst); } else { if (inst->addr_mode == Z80_REG_INDIRECT) { - dst = mov_rr(dst, opts->regs[inst->ea_reg], SCRATCH1, SZ_W); + mov_rr(code, opts->regs[inst->ea_reg], opts->gen.scratch1, SZ_W); } else { - dst = mov_ir(dst, inst->immed, SCRATCH1, SZ_W); + mov_ir(code, inst->immed, opts->gen.scratch1, SZ_W); } - dst = call(dst, (uint8_t *)z80_native_addr); - dst = jmp_r(dst, SCRATCH1); + call(code, opts->native_addr); + jmp_r(code, opts->gen.scratch1); } break; } case Z80_JPCC: { - dst = zcycles(dst, 7);//T States: 4,3 + cycles(&opts->gen, 7);//T States: 4,3 uint8_t cond = CC_Z; switch (inst->reg) { case Z80_CC_NZ: cond = CC_NZ; case Z80_CC_Z: - dst = cmp_irdisp8(dst, 0, CONTEXT, zf_off(ZF_Z), SZ_B); + cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_Z), SZ_B); break; case Z80_CC_NC: cond = CC_NZ; case Z80_CC_C: - dst = cmp_irdisp8(dst, 0, CONTEXT, zf_off(ZF_C), SZ_B); + cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_C), SZ_B); break; case Z80_CC_PO: cond = CC_NZ; case Z80_CC_PE: - dst = cmp_irdisp8(dst, 0, CONTEXT, zf_off(ZF_PV), SZ_B); + cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_PV), SZ_B); break; case Z80_CC_P: cond = CC_NZ; case Z80_CC_M: - dst = cmp_irdisp8(dst, 0, CONTEXT, zf_off(ZF_S), SZ_B); + cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_S), SZ_B); break; } - uint8_t *no_jump_off = dst+1; - dst = jcc(dst, cond, dst+2); - dst = zcycles(dst, 5);//T States: 5 + uint8_t *no_jump_off = code->cur+1; + jcc(code, cond, code->cur+2); + cycles(&opts->gen, 5);//T States: 5 uint16_t dest_addr = inst->immed; if (dest_addr < 0x4000) { - uint8_t * call_dst = z80_get_native_address(context, dest_addr); + code_ptr call_dst = z80_get_native_address(context, dest_addr); if (!call_dst) { - opts->deferred = defer_address(opts->deferred, dest_addr, dst + 1); + opts->gen.deferred = defer_address(opts->gen.deferred, dest_addr, code->cur + 1); //fake address to force large displacement - call_dst = dst + 256; + call_dst = code->cur + 256; } - dst = jmp(dst, call_dst); + jmp(code, call_dst); } else { - dst = mov_ir(dst, dest_addr, SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_native_addr); - dst = jmp_r(dst, SCRATCH1); + mov_ir(code, dest_addr, opts->gen.scratch1, SZ_W); + call(code, opts->native_addr); + jmp_r(code, opts->gen.scratch1); } - *no_jump_off = dst - (no_jump_off+1); + *no_jump_off = code->cur - (no_jump_off+1); break; } case Z80_JR: { - dst = zcycles(dst, 12);//T States: 4,3,5 + cycles(&opts->gen, 12);//T States: 4,3,5 uint16_t dest_addr = address + inst->immed + 2; if (dest_addr < 0x4000) { - uint8_t * call_dst = z80_get_native_address(context, dest_addr); + code_ptr call_dst = z80_get_native_address(context, dest_addr); if (!call_dst) { - opts->deferred = defer_address(opts->deferred, dest_addr, dst + 1); + opts->gen.deferred = defer_address(opts->gen.deferred, dest_addr, code->cur + 1); //fake address to force large displacement - call_dst = dst + 256; + call_dst = code->cur + 256; } - dst = jmp(dst, call_dst); + jmp(code, call_dst); } else { - dst = mov_ir(dst, dest_addr, SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_native_addr); - dst = jmp_r(dst, SCRATCH1); + mov_ir(code, dest_addr, opts->gen.scratch1, SZ_W); + call(code, opts->native_addr); + jmp_r(code, opts->gen.scratch1); } break; } case Z80_JRCC: { - dst = zcycles(dst, 7);//T States: 4,3 + cycles(&opts->gen, 7);//T States: 4,3 uint8_t cond = CC_Z; switch (inst->reg) { case Z80_CC_NZ: cond = CC_NZ; case Z80_CC_Z: - dst = cmp_irdisp8(dst, 0, CONTEXT, zf_off(ZF_Z), SZ_B); + cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_Z), SZ_B); break; case Z80_CC_NC: cond = CC_NZ; case Z80_CC_C: - dst = cmp_irdisp8(dst, 0, CONTEXT, zf_off(ZF_C), SZ_B); + cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_C), SZ_B); break; } - uint8_t *no_jump_off = dst+1; - dst = jcc(dst, cond, dst+2); - dst = zcycles(dst, 5);//T States: 5 + uint8_t *no_jump_off = code->cur+1; + jcc(code, cond, code->cur+2); + cycles(&opts->gen, 5);//T States: 5 uint16_t dest_addr = address + inst->immed + 2; if (dest_addr < 0x4000) { - uint8_t * call_dst = z80_get_native_address(context, dest_addr); + code_ptr call_dst = z80_get_native_address(context, dest_addr); if (!call_dst) { - opts->deferred = defer_address(opts->deferred, dest_addr, dst + 1); + opts->gen.deferred = defer_address(opts->gen.deferred, dest_addr, code->cur + 1); //fake address to force large displacement - call_dst = dst + 256; + call_dst = code->cur + 256; } - dst = jmp(dst, call_dst); + jmp(code, call_dst); } else { - dst = mov_ir(dst, dest_addr, SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_native_addr); - dst = jmp_r(dst, SCRATCH1); + mov_ir(code, dest_addr, opts->gen.scratch1, SZ_W); + call(code, opts->native_addr); + jmp_r(code, opts->gen.scratch1); } - *no_jump_off = dst - (no_jump_off+1); + *no_jump_off = code->cur - (no_jump_off+1); break; } case Z80_DJNZ: - dst = zcycles(dst, 8);//T States: 5,3 - dst = sub_ir(dst, 1, opts->regs[Z80_B], SZ_B); - uint8_t *no_jump_off = dst+1; - dst = jcc(dst, CC_Z, dst+2); - dst = zcycles(dst, 5);//T States: 5 + cycles(&opts->gen, 8);//T States: 5,3 + sub_ir(code, 1, opts->regs[Z80_B], SZ_B); + uint8_t *no_jump_off = code->cur+1; + jcc(code, CC_Z, code->cur+2); + cycles(&opts->gen, 5);//T States: 5 uint16_t dest_addr = address + inst->immed + 2; if (dest_addr < 0x4000) { - uint8_t * call_dst = z80_get_native_address(context, dest_addr); + code_ptr call_dst = z80_get_native_address(context, dest_addr); if (!call_dst) { - opts->deferred = defer_address(opts->deferred, dest_addr, dst + 1); + opts->gen.deferred = defer_address(opts->gen.deferred, dest_addr, code->cur + 1); //fake address to force large displacement - call_dst = dst + 256; + call_dst = code->cur + 256; } - dst = jmp(dst, call_dst); + jmp(code, call_dst); } else { - dst = mov_ir(dst, dest_addr, SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_native_addr); - dst = jmp_r(dst, SCRATCH1); + mov_ir(code, dest_addr, opts->gen.scratch1, SZ_W); + call(code, opts->native_addr); + jmp_r(code, opts->gen.scratch1); } - *no_jump_off = dst - (no_jump_off+1); + *no_jump_off = code->cur - (no_jump_off+1); break; case Z80_CALL: { - dst = zcycles(dst, 11);//T States: 4,3,4 - dst = sub_ir(dst, 2, opts->regs[Z80_SP], SZ_W); - dst = mov_ir(dst, address + 3, SCRATCH1, SZ_W); - dst = mov_rr(dst, opts->regs[Z80_SP], SCRATCH2, SZ_W); - dst = call(dst, (uint8_t *)z80_write_word_highfirst);//T States: 3, 3 + cycles(&opts->gen, 11);//T States: 4,3,4 + sub_ir(code, 2, opts->regs[Z80_SP], SZ_W); + mov_ir(code, address + 3, opts->gen.scratch1, SZ_W); + mov_rr(code, opts->regs[Z80_SP], opts->gen.scratch2, SZ_W); + call(code, opts->write_16_highfirst);//T States: 3, 3 if (inst->immed < 0x4000) { - uint8_t * call_dst = z80_get_native_address(context, inst->immed); + code_ptr call_dst = z80_get_native_address(context, inst->immed); if (!call_dst) { - opts->deferred = defer_address(opts->deferred, inst->immed, dst + 1); + opts->gen.deferred = defer_address(opts->gen.deferred, inst->immed, code->cur + 1); //fake address to force large displacement - call_dst = dst + 256; + call_dst = code->cur + 256; } - dst = jmp(dst, call_dst); + jmp(code, call_dst); } else { - dst = mov_ir(dst, inst->immed, SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_native_addr); - dst = jmp_r(dst, SCRATCH1); + mov_ir(code, inst->immed, opts->gen.scratch1, SZ_W); + call(code, opts->native_addr); + jmp_r(code, opts->gen.scratch1); } break; } case Z80_CALLCC: - dst = zcycles(dst, 10);//T States: 4,3,3 (false case) + cycles(&opts->gen, 10);//T States: 4,3,3 (false case) uint8_t cond = CC_Z; switch (inst->reg) { case Z80_CC_NZ: cond = CC_NZ; case Z80_CC_Z: - dst = cmp_irdisp8(dst, 0, CONTEXT, zf_off(ZF_Z), SZ_B); + cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_Z), SZ_B); break; case Z80_CC_NC: cond = CC_NZ; case Z80_CC_C: - dst = cmp_irdisp8(dst, 0, CONTEXT, zf_off(ZF_C), SZ_B); + cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_C), SZ_B); break; case Z80_CC_PO: cond = CC_NZ; case Z80_CC_PE: - dst = cmp_irdisp8(dst, 0, CONTEXT, zf_off(ZF_PV), SZ_B); + cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_PV), SZ_B); break; case Z80_CC_P: cond = CC_NZ; case Z80_CC_M: - dst = cmp_irdisp8(dst, 0, CONTEXT, zf_off(ZF_S), SZ_B); + cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_S), SZ_B); break; } - uint8_t *no_call_off = dst+1; - dst = jcc(dst, cond, dst+2); - dst = zcycles(dst, 1);//Last of the above T states takes an extra cycle in the true case - dst = sub_ir(dst, 2, opts->regs[Z80_SP], SZ_W); - dst = mov_ir(dst, address + 3, SCRATCH1, SZ_W); - dst = mov_rr(dst, opts->regs[Z80_SP], SCRATCH2, SZ_W); - dst = call(dst, (uint8_t *)z80_write_word_highfirst);//T States: 3, 3 + uint8_t *no_call_off = code->cur+1; + jcc(code, cond, code->cur+2); + cycles(&opts->gen, 1);//Last of the above T states takes an extra cycle in the true case + sub_ir(code, 2, opts->regs[Z80_SP], SZ_W); + mov_ir(code, address + 3, opts->gen.scratch1, SZ_W); + mov_rr(code, opts->regs[Z80_SP], opts->gen.scratch2, SZ_W); + call(code, opts->write_16_highfirst);//T States: 3, 3 if (inst->immed < 0x4000) { - uint8_t * call_dst = z80_get_native_address(context, inst->immed); + code_ptr call_dst = z80_get_native_address(context, inst->immed); if (!call_dst) { - opts->deferred = defer_address(opts->deferred, inst->immed, dst + 1); + opts->gen.deferred = defer_address(opts->gen.deferred, inst->immed, code->cur + 1); //fake address to force large displacement - call_dst = dst + 256; + call_dst = code->cur + 256; } - dst = jmp(dst, call_dst); + jmp(code, call_dst); } else { - dst = mov_ir(dst, inst->immed, SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_native_addr); - dst = jmp_r(dst, SCRATCH1); + mov_ir(code, inst->immed, opts->gen.scratch1, SZ_W); + call(code, opts->native_addr); + jmp_r(code, opts->gen.scratch1); } - *no_call_off = dst - (no_call_off+1); + *no_call_off = code->cur - (no_call_off+1); break; case Z80_RET: - dst = zcycles(dst, 4);//T States: 4 - dst = mov_rr(dst, opts->regs[Z80_SP], SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_read_word);//T STates: 3, 3 - dst = add_ir(dst, 2, opts->regs[Z80_SP], SZ_W); - dst = call(dst, (uint8_t *)z80_native_addr); - dst = jmp_r(dst, SCRATCH1); + cycles(&opts->gen, 4);//T States: 4 + mov_rr(code, opts->regs[Z80_SP], opts->gen.scratch1, SZ_W); + call(code, opts->read_16);//T STates: 3, 3 + add_ir(code, 2, opts->regs[Z80_SP], SZ_W); + call(code, opts->native_addr); + jmp_r(code, opts->gen.scratch1); break; case Z80_RETCC: { - dst = zcycles(dst, 5);//T States: 5 + cycles(&opts->gen, 5);//T States: 5 uint8_t cond = CC_Z; switch (inst->reg) { case Z80_CC_NZ: cond = CC_NZ; case Z80_CC_Z: - dst = cmp_irdisp8(dst, 0, CONTEXT, zf_off(ZF_Z), SZ_B); + cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_Z), SZ_B); break; case Z80_CC_NC: cond = CC_NZ; case Z80_CC_C: - dst = cmp_irdisp8(dst, 0, CONTEXT, zf_off(ZF_C), SZ_B); + cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_C), SZ_B); break; case Z80_CC_PO: cond = CC_NZ; case Z80_CC_PE: - dst = cmp_irdisp8(dst, 0, CONTEXT, zf_off(ZF_PV), SZ_B); + cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_PV), SZ_B); break; case Z80_CC_P: cond = CC_NZ; case Z80_CC_M: - dst = cmp_irdisp8(dst, 0, CONTEXT, zf_off(ZF_S), SZ_B); + cmp_irdisp(code, 0, opts->gen.context_reg, zf_off(ZF_S), SZ_B); break; } - uint8_t *no_call_off = dst+1; - dst = jcc(dst, cond, dst+2); - dst = mov_rr(dst, opts->regs[Z80_SP], SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_read_word);//T STates: 3, 3 - dst = add_ir(dst, 2, opts->regs[Z80_SP], SZ_W); - dst = call(dst, (uint8_t *)z80_native_addr); - dst = jmp_r(dst, SCRATCH1); - *no_call_off = dst - (no_call_off+1); + uint8_t *no_call_off = code->cur+1; + jcc(code, cond, code->cur+2); + mov_rr(code, opts->regs[Z80_SP], opts->gen.scratch1, SZ_W); + call(code, opts->read_16);//T STates: 3, 3 + add_ir(code, 2, opts->regs[Z80_SP], SZ_W); + call(code, opts->native_addr); + jmp_r(code, opts->gen.scratch1); + *no_call_off = code->cur - (no_call_off+1); break; } case Z80_RETI: //For some systems, this may need a callback for signalling interrupt routine completion - dst = zcycles(dst, 8);//T States: 4, 4 - dst = mov_rr(dst, opts->regs[Z80_SP], SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_read_word);//T STates: 3, 3 - dst = add_ir(dst, 2, opts->regs[Z80_SP], SZ_W); - dst = call(dst, (uint8_t *)z80_native_addr); - dst = jmp_r(dst, SCRATCH1); + cycles(&opts->gen, 8);//T States: 4, 4 + mov_rr(code, opts->regs[Z80_SP], opts->gen.scratch1, SZ_W); + call(code, opts->read_16);//T STates: 3, 3 + add_ir(code, 2, opts->regs[Z80_SP], SZ_W); + call(code, opts->native_addr); + jmp_r(code, opts->gen.scratch1); break; case Z80_RETN: - dst = zcycles(dst, 8);//T States: 4, 4 - dst = mov_rdisp8r(dst, CONTEXT, offsetof(z80_context, iff2), SCRATCH2, SZ_B); - dst = mov_rr(dst, opts->regs[Z80_SP], SCRATCH1, SZ_W); - dst = mov_rrdisp8(dst, SCRATCH2, CONTEXT, offsetof(z80_context, iff1), SZ_B); - dst = call(dst, (uint8_t *)z80_read_word);//T STates: 3, 3 - dst = add_ir(dst, 2, opts->regs[Z80_SP], SZ_W); - dst = call(dst, (uint8_t *)z80_native_addr); - dst = jmp_r(dst, SCRATCH1); + cycles(&opts->gen, 8);//T States: 4, 4 + mov_rdispr(code, opts->gen.context_reg, offsetof(z80_context, iff2), opts->gen.scratch2, SZ_B); + mov_rr(code, opts->regs[Z80_SP], opts->gen.scratch1, SZ_W); + mov_rrdisp(code, opts->gen.scratch2, opts->gen.context_reg, offsetof(z80_context, iff1), SZ_B); + call(code, opts->read_16);//T STates: 3, 3 + add_ir(code, 2, opts->regs[Z80_SP], SZ_W); + call(code, opts->native_addr); + jmp_r(code, opts->gen.scratch1); break; case Z80_RST: { //RST is basically CALL to an address in page 0 - dst = zcycles(dst, 5);//T States: 5 - dst = sub_ir(dst, 2, opts->regs[Z80_SP], SZ_W); - dst = mov_ir(dst, address + 1, SCRATCH1, SZ_W); - dst = mov_rr(dst, opts->regs[Z80_SP], SCRATCH2, SZ_W); - dst = call(dst, (uint8_t *)z80_write_word_highfirst);//T States: 3, 3 - uint8_t * call_dst = z80_get_native_address(context, inst->immed); + cycles(&opts->gen, 5);//T States: 5 + sub_ir(code, 2, opts->regs[Z80_SP], SZ_W); + mov_ir(code, address + 1, opts->gen.scratch1, SZ_W); + mov_rr(code, opts->regs[Z80_SP], opts->gen.scratch2, SZ_W); + call(code, opts->write_16_highfirst);//T States: 3, 3 + code_ptr call_dst = z80_get_native_address(context, inst->immed); if (!call_dst) { - opts->deferred = defer_address(opts->deferred, inst->immed, dst + 1); + opts->gen.deferred = defer_address(opts->gen.deferred, inst->immed, code->cur + 1); //fake address to force large displacement - call_dst = dst + 256; + call_dst = code->cur + 256; } - dst = jmp(dst, call_dst); + jmp(code, call_dst); break; } case Z80_IN: - dst = zcycles(dst, inst->reg == Z80_A ? 7 : 8);//T States: 4 3/4 + cycles(&opts->gen, inst->reg == Z80_A ? 7 : 8);//T States: 4 3/4 if (inst->addr_mode == Z80_IMMED_INDIRECT) { - dst = mov_ir(dst, inst->immed, SCRATCH1, SZ_B); + mov_ir(code, inst->immed, opts->gen.scratch1, SZ_B); } else { - dst = mov_rr(dst, opts->regs[Z80_C], SCRATCH1, SZ_B); + mov_rr(code, opts->regs[Z80_C], opts->gen.scratch1, SZ_B); } - dst = call(dst, (uint8_t *)z80_io_read); - translate_z80_reg(inst, &dst_op, dst, opts); - dst = mov_rr(dst, SCRATCH1, dst_op.base, SZ_B); - dst = z80_save_reg(dst, inst, opts); + call(code, opts->read_io); + translate_z80_reg(inst, &dst_op, opts); + mov_rr(code, opts->gen.scratch1, dst_op.base, SZ_B); + z80_save_reg(inst, opts); break; /*case Z80_INI: case Z80_INIR: case Z80_IND: case Z80_INDR:*/ case Z80_OUT: - dst = zcycles(dst, inst->reg == Z80_A ? 7 : 8);//T States: 4 3/4 + cycles(&opts->gen, inst->reg == Z80_A ? 7 : 8);//T States: 4 3/4 if ((inst->addr_mode & 0x1F) == Z80_IMMED_INDIRECT) { - dst = mov_ir(dst, inst->immed, SCRATCH2, SZ_B); + mov_ir(code, inst->immed, opts->gen.scratch2, SZ_B); } else { - dst = mov_rr(dst, opts->regs[Z80_C], SCRATCH2, SZ_B); + mov_rr(code, opts->regs[Z80_C], opts->gen.scratch2, SZ_B); } - translate_z80_reg(inst, &src_op, dst, opts); - dst = mov_rr(dst, dst_op.base, SCRATCH1, SZ_B); - dst = call(dst, (uint8_t *)z80_io_write); - dst = z80_save_reg(dst, inst, opts); + translate_z80_reg(inst, &src_op, opts); + mov_rr(code, dst_op.base, opts->gen.scratch1, SZ_B); + call(code, opts->write_io); + z80_save_reg(inst, opts); break; /*case Z80_OUTI: case Z80_OTIR: @@ -1685,7 +1662,6 @@ uint8_t * translate_z80inst(z80inst * inst, uint8_t * dst, z80_context * context exit(1); } } - return dst; } uint8_t * z80_interp_handler(uint8_t opcode, z80_context * context) @@ -1704,45 +1680,45 @@ uint8_t * z80_interp_handler(uint8_t opcode, z80_context * context) fprintf(stderr, "Encountered multi-byte Z80 instruction at %X. Z80 interpeter doesn't support those yet.", context->pc); exit(1); } - x86_z80_options * opts = context->options; - if (opts->code_end - opts->cur_code < ZMAX_NATIVE_SIZE) { - size_t size = 1024*1024; - opts->cur_code = alloc_code(&size); - opts->code_end = opts->cur_code + size; - } - context->interp_code[opcode] = opts->cur_code; - opts->cur_code = translate_z80inst(&inst, opts->cur_code, context, 0, 1); - opts->cur_code = mov_rdisp8r(opts->cur_code, CONTEXT, offsetof(z80_context, pc), SCRATCH1, SZ_W); - opts->cur_code = add_ir(opts->cur_code, after - codebuf, SCRATCH1, SZ_W); - opts->cur_code = call(opts->cur_code, (uint8_t *)z80_native_addr); - opts->cur_code = jmp_r(opts->cur_code, SCRATCH1); + + z80_options * opts = context->options; + code_info *code = &opts->gen.code; + check_alloc_code(code, ZMAX_NATIVE_SIZE); + context->interp_code[opcode] = code->cur; + translate_z80inst(&inst, context, 0, 1); + mov_rdispr(code, opts->gen.context_reg, offsetof(z80_context, pc), opts->gen.scratch1, SZ_W); + add_ir(code, after - codebuf, opts->gen.scratch1, SZ_W); + call(code, opts->native_addr); + jmp_r(code, opts->gen.scratch1); } return context->interp_code[opcode]; } -uint8_t * z80_make_interp_stub(z80_context * context, uint16_t address) +code_info z80_make_interp_stub(z80_context * context, uint16_t address) { - x86_z80_options *opts = context->options; - uint8_t *dst = opts->cur_code; + z80_options *opts = context->options; + code_info * code = &opts->gen.code; + check_alloc_code(code, 32); + code_info stub = {code->cur, NULL}; //TODO: make this play well with the breakpoint code - dst = mov_ir(dst, address, SCRATCH1, SZ_W); - dst = call(dst, (uint8_t *)z80_read_byte); + mov_ir(code, address, opts->gen.scratch1, SZ_W); + call(code, opts->read_8); //normal opcode fetch is already factored into instruction timing //back out the base 3 cycles from a read here //not quite perfect, but it will have to do for now - dst = sub_ir(dst, 3, ZCYCLES, SZ_D); - dst = z80_check_cycles_int(dst, address); - dst = call(dst, (uint8_t *)z80_save_context); - dst = mov_rr(dst, SCRATCH1, RDI, SZ_B); - dst = mov_irdisp8(dst, address, CONTEXT, offsetof(z80_context, pc), SZ_W); - dst = push_r(dst, CONTEXT); - dst = call(dst, (uint8_t *)z80_interp_handler); - dst = mov_rr(dst, RAX, SCRATCH1, SZ_Q); - dst = pop_r(dst, CONTEXT); - dst = call(dst, (uint8_t *)z80_load_context); - dst = jmp_r(dst, SCRATCH1); - opts->code_end = dst; - return dst; + cycles(&opts->gen, -3); + check_cycles_int(&opts->gen, address); + call(code, opts->gen.save_context); + mov_rr(code, opts->gen.scratch1, RDI, SZ_B); + mov_irdisp(code, address, opts->gen.context_reg, offsetof(z80_context, pc), SZ_W); + push_r(code, opts->gen.context_reg); + call(code, (code_ptr)z80_interp_handler); + mov_rr(code, RAX, opts->gen.scratch1, SZ_Q); + pop_r(code, opts->gen.context_reg); + call(code, opts->gen.load_context); + jmp_r(code, opts->gen.scratch1); + stub.last = code->cur; + return stub; } @@ -1764,24 +1740,24 @@ uint8_t * z80_get_native_address(z80_context * context, uint32_t address) return map->base + map->offsets[address]; } -uint8_t z80_get_native_inst_size(x86_z80_options * opts, uint32_t address) +uint8_t z80_get_native_inst_size(z80_options * opts, uint32_t address) { //TODO: Fix for addresses >= 0x4000 if (address >= 0x4000) { return 0; } - return opts->ram_inst_sizes[address & 0x1FFF]; + return opts->gen.ram_inst_sizes[0][address & 0x1FFF]; } void z80_map_native_address(z80_context * context, uint32_t address, uint8_t * native_address, uint8_t size, uint8_t native_size) { uint32_t orig_address = address; native_map_slot *map; - x86_z80_options * opts = context->options; + z80_options * opts = context->options; if (address < 0x4000) { address &= 0x1FFF; map = context->static_code_map; - opts->ram_inst_sizes[address] = native_size; + opts->gen.ram_inst_sizes[0][address] = native_size; context->ram_code_flags[(address & 0x1C00) >> 10] |= 1 << ((address & 0x380) >> 7); context->ram_code_flags[((address + size) & 0x1C00) >> 10] |= 1 << (((address + size) & 0x380) >> 7); } else { @@ -1837,10 +1813,12 @@ z80_context * z80_handle_code_write(uint32_t address, z80_context * context) { uint32_t inst_start = z80_get_instruction_start(context->static_code_map, address); if (inst_start != INVALID_INSTRUCTION_START) { - uint8_t * dst = z80_get_native_address(context, inst_start); - dprintf("patching code at %p for Z80 instruction at %X due to write to %X\n", dst, inst_start, address); - dst = mov_ir(dst, inst_start, SCRATCH1, SZ_D); - dst = call(dst, (uint8_t *)z80_retrans_stub); + code_ptr dst = z80_get_native_address(context, inst_start); + code_info code = {dst, dst+16}; + z80_options * opts = context->options; + dprintf("patching code at %p for Z80 instruction at %X due to write to %X\n", code, inst_start, address); + mov_ir(&code, inst_start, opts->gen.scratch1, SZ_D); + call(&code, opts->retrans_stub); } return context; } @@ -1860,22 +1838,21 @@ uint8_t * z80_get_native_address_trans(z80_context * context, uint32_t address) void z80_handle_deferred(z80_context * context) { - x86_z80_options * opts = context->options; - process_deferred(&opts->deferred, context, (native_addr_func)z80_get_native_address); - if (opts->deferred) { - translate_z80_stream(context, opts->deferred->address); + z80_options * opts = context->options; + process_deferred(&opts->gen.deferred, context, (native_addr_func)z80_get_native_address); + if (opts->gen.deferred) { + translate_z80_stream(context, opts->gen.deferred->address); } } void * z80_retranslate_inst(uint32_t address, z80_context * context, uint8_t * orig_start) { char disbuf[80]; - x86_z80_options * opts = context->options; + z80_options * opts = context->options; uint8_t orig_size = z80_get_native_inst_size(opts, address); uint32_t orig = address; address &= 0x1FFF; - uint8_t * dst = opts->cur_code; - uint8_t * dst_end = opts->code_end; + code_info *code = &opts->gen.code; uint8_t *after, *inst = context->mem_pointers[0] + address; z80inst instbuf; dprintf("Retranslating code at Z80 address %X, native address %p\n", address, orig_start); @@ -1889,19 +1866,15 @@ void * z80_retranslate_inst(uint32_t address, z80_context * context, uint8_t * o } #endif if (orig_size != ZMAX_NATIVE_SIZE) { - if (dst_end - dst < ZMAX_NATIVE_SIZE) { - size_t size = 1024*1024; - dst = alloc_code(&size); - opts->code_end = dst_end = dst + size; - opts->cur_code = dst; - } - deferred_addr * orig_deferred = opts->deferred; - uint8_t * native_end = translate_z80inst(&instbuf, dst, context, address, 0); + check_alloc_code(code, ZMAX_NATIVE_SIZE); + code_ptr start = code->cur; + deferred_addr * orig_deferred = opts->gen.deferred; + translate_z80inst(&instbuf, context, address, 0); /* if ((native_end - dst) <= orig_size) { uint8_t * native_next = z80_get_native_address(context, address + after-inst); if (native_next && ((native_next == orig_start + orig_size) || (orig_size - (native_end - dst)) > 5)) { - remove_deferred_until(&opts->deferred, orig_deferred); + remove_deferred_until(&opts->gen.deferred, orig_deferred); native_end = translate_z80inst(&instbuf, orig_start, context, address, 0); if (native_next == orig_start + orig_size && (native_next-native_end) < 2) { while (native_end < orig_start + orig_size) { @@ -1913,20 +1886,27 @@ void * z80_retranslate_inst(uint32_t address, z80_context * context, uint8_t * o z80_handle_deferred(context); return orig_start; } - } - */ - z80_map_native_address(context, address, dst, after-inst, ZMAX_NATIVE_SIZE); - opts->cur_code = dst+ZMAX_NATIVE_SIZE; - jmp(orig_start, dst); + }*/ + z80_map_native_address(context, address, start, after-inst, ZMAX_NATIVE_SIZE); + code_info tmp_code = {orig_start, orig_start + 16}; + jmp(&tmp_code, start); + tmp_code = *code; + code->cur = start + ZMAX_NATIVE_SIZE; if (!z80_is_terminal(&instbuf)) { - jmp(native_end, z80_get_native_address_trans(context, address + after-inst)); + jmp(&tmp_code, z80_get_native_address_trans(context, address + after-inst)); } z80_handle_deferred(context); - return dst; + return start; } else { - dst = translate_z80inst(&instbuf, orig_start, context, address, 0); + code_info tmp_code = *code; + code->cur = orig_start; + code->last = orig_start + ZMAX_NATIVE_SIZE; + translate_z80inst(&instbuf, context, address, 0); + code_info tmp2 = *code; + *code = tmp_code; if (!z80_is_terminal(&instbuf)) { - dst = jmp(dst, z80_get_native_address_trans(context, address + after-inst)); + + jmp(&tmp2, z80_get_native_address_trans(context, address + after-inst)); } z80_handle_deferred(context); return orig_start; @@ -1939,7 +1919,7 @@ void translate_z80_stream(z80_context * context, uint32_t address) if (z80_get_native_address(context, address)) { return; } - x86_z80_options * opts = context->options; + z80_options * opts = context->options; uint32_t start_address = address; uint8_t * encoded = NULL, *next; if (address < 0x4000) { @@ -1951,27 +1931,18 @@ void translate_z80_stream(z80_context * context, uint32_t address) z80inst inst; dprintf("translating Z80 code at address %X\n", address); do { - if (opts->code_end-opts->cur_code < ZMAX_NATIVE_SIZE) { - if (opts->code_end-opts->cur_code < 5) { - puts("out of code memory, not enough space for jmp to next chunk"); - exit(1); - } - size_t size = 1024*1024; - opts->cur_code = alloc_code(&size); - opts->code_end = opts->cur_code + size; - jmp(opts->cur_code, opts->cur_code); - } if (address >= 0x4000) { - uint8_t *native_start = opts->cur_code; - uint8_t *after = z80_make_interp_stub(context, address); - z80_map_native_address(context, address, opts->cur_code, 1, after - native_start); + code_info stub = z80_make_interp_stub(context, address); + z80_map_native_address(context, address, stub.cur, 1, stub.last - stub.cur); break; } uint8_t * existing = z80_get_native_address(context, address); if (existing) { - opts->cur_code = jmp(opts->cur_code, existing); + jmp(&opts->gen.code, existing); break; } + //make sure prologue is in a contiguous chunk of code + check_code_prologue(&opts->gen.code); next = z80_decode(encoded, &inst); #ifdef DO_DEBUG_PRINT z80_disasm(&inst, disbuf, address); @@ -1981,9 +1952,9 @@ void translate_z80_stream(z80_context * context, uint32_t address) printf("%X\t%s\n", address, disbuf); } #endif - uint8_t *after = translate_z80inst(&inst, opts->cur_code, context, address, 0); - z80_map_native_address(context, address, opts->cur_code, next-encoded, after - opts->cur_code); - opts->cur_code = after; + code_ptr start = opts->gen.code.cur; + translate_z80inst(&inst, context, address, 0); + z80_map_native_address(context, address, start, next-encoded, opts->gen.code.cur - start); address += next-encoded; if (address > 0xFFFF) { address &= 0xFFFF; @@ -1992,9 +1963,9 @@ void translate_z80_stream(z80_context * context, uint32_t address) encoded = next; } } while (!z80_is_terminal(&inst)); - process_deferred(&opts->deferred, context, (native_addr_func)z80_get_native_address); - if (opts->deferred) { - address = opts->deferred->address; + process_deferred(&opts->gen.deferred, context, (native_addr_func)z80_get_native_address); + if (opts->gen.deferred) { + address = opts->gen.deferred->address; dprintf("defferred address: %X\n", address); if (address < 0x4000) { encoded = context->mem_pointers[0] + (address & 0x1FFF); @@ -2008,8 +1979,18 @@ void translate_z80_stream(z80_context * context, uint32_t address) } } -void init_x86_z80_opts(x86_z80_options * options) +void init_x86_z80_opts(z80_options * options, memmap_chunk const * chunks, uint32_t num_chunks) { + memset(options, 0, sizeof(*options)); + + options->gen.address_size = SZ_W; + options->gen.address_mask = 0xFFFF; + options->gen.max_address = 0x10000; + options->gen.bus_cycles = 3; + options->gen.mem_ptr_off = offsetof(z80_context, mem_pointers); + options->gen.ram_flags_off = offsetof(z80_context, ram_code_flags); + options->gen.ram_flags_shift = 7; + options->flags = 0; options->regs[Z80_B] = BH; options->regs[Z80_C] = RBX; @@ -2031,15 +2012,285 @@ void init_x86_z80_opts(x86_z80_options * options) options->regs[Z80_AF] = -1; options->regs[Z80_IX] = RDX; options->regs[Z80_IY] = R8; - size_t size = 1024 * 1024; - options->cur_code = alloc_code(&size); - options->code_end = options->cur_code + size; - options->ram_inst_sizes = malloc(sizeof(uint8_t) * 0x2000); - memset(options->ram_inst_sizes, 0, sizeof(uint8_t) * 0x2000); - options->deferred = NULL; + + options->bank_reg = R15; + options->bank_pointer = R12; + + options->gen.context_reg = RSI; + options->gen.cycles = RBP; + options->gen.limit = RDI; + options->gen.scratch1 = R13; + options->gen.scratch2 = R14; + + options->gen.native_code_map = malloc(sizeof(native_map_slot)); + memset(options->gen.native_code_map, 0, sizeof(native_map_slot)); + options->gen.deferred = NULL; + options->gen.ram_inst_sizes = malloc(sizeof(uint8_t) * 0x2000 + sizeof(uint8_t *)); + options->gen.ram_inst_sizes[0] = (uint8_t *)(options->gen.ram_inst_sizes + 1); + memset(options->gen.ram_inst_sizes[0], 0, sizeof(uint8_t) * 0x2000); + + code_info *code = &options->gen.code; + init_code_info(code); + + options->save_context_scratch = code->cur; + mov_rrdisp(code, options->gen.scratch1, options->gen.context_reg, offsetof(z80_context, scratch1), SZ_W); + mov_rrdisp(code, options->gen.scratch2, options->gen.context_reg, offsetof(z80_context, scratch2), SZ_W); + + options->gen.save_context = code->cur; + for (int i = 0; i <= Z80_A; i++) + { + int reg; + uint8_t size; + if (i < Z80_I) { + reg = i /2 + Z80_BC + (i > Z80_H ? 2 : 0); + size = SZ_W; + } else { + reg = i; + size = SZ_B; } + if (options->regs[reg] >= 0) { + mov_rrdisp(code, options->regs[reg], options->gen.context_reg, offsetof(z80_context, regs) + i, size); + } + if (size == SZ_W) { + i++; + } + } + if (options->regs[Z80_SP] >= 0) { + mov_rrdisp(code, options->regs[Z80_SP], options->gen.context_reg, offsetof(z80_context, sp), SZ_W); + } + mov_rrdisp(code, options->gen.limit, options->gen.context_reg, offsetof(z80_context, target_cycle), SZ_D); + mov_rrdisp(code, options->gen.cycles, options->gen.context_reg, offsetof(z80_context, current_cycle), SZ_D); + mov_rrdisp(code, options->bank_reg, options->gen.context_reg, offsetof(z80_context, bank_reg), SZ_W); + mov_rrdisp(code, options->bank_pointer, options->gen.context_reg, offsetof(z80_context, mem_pointers) + sizeof(uint8_t *) * 1, SZ_PTR); + retn(code); + + options->load_context_scratch = code->cur; + mov_rdispr(code, options->gen.context_reg, offsetof(z80_context, scratch1), options->gen.scratch1, SZ_W); + mov_rdispr(code, options->gen.context_reg, offsetof(z80_context, scratch2), options->gen.scratch2, SZ_W); + options->gen.load_context = code->cur; + for (int i = 0; i <= Z80_A; i++) + { + int reg; + uint8_t size; + if (i < Z80_I) { + reg = i /2 + Z80_BC + (i > Z80_H ? 2 : 0); + size = SZ_W; + } else { + reg = i; + size = SZ_B; + } + if (options->regs[reg] >= 0) { + mov_rdispr(code, options->gen.context_reg, offsetof(z80_context, regs) + i, options->regs[reg], size); + } + if (size == SZ_W) { + i++; + } + } + if (options->regs[Z80_SP] >= 0) { + mov_rdispr(code, options->gen.context_reg, offsetof(z80_context, sp), options->regs[Z80_SP], SZ_W); + } + mov_rdispr(code, options->gen.context_reg, offsetof(z80_context, target_cycle), options->gen.limit, SZ_D); + mov_rdispr(code, options->gen.context_reg, offsetof(z80_context, current_cycle), options->gen.cycles, SZ_D); + mov_rdispr(code, options->gen.context_reg, offsetof(z80_context, bank_reg), options->bank_reg, SZ_W); + mov_rdispr(code, options->gen.context_reg, offsetof(z80_context, mem_pointers) + sizeof(uint8_t *) * 1, options->bank_pointer, SZ_PTR); + retn(code); + + options->native_addr = code->cur; + call(code, options->gen.save_context); + push_r(code, options->gen.context_reg); + mov_rr(code, options->gen.context_reg, RDI, SZ_PTR); + movzx_rr(code, options->gen.scratch1, RSI, SZ_W, SZ_D); + call(code, (code_ptr)z80_get_native_address_trans); + mov_rr(code, RAX, options->gen.scratch1, SZ_PTR); + pop_r(code, options->gen.context_reg); + call(code, options->gen.load_context); + retn(code); + + options->gen.handle_cycle_limit = code->cur; + cmp_rdispr(code, options->gen.context_reg, offsetof(z80_context, sync_cycle), options->gen.cycles, SZ_D); + code_ptr no_sync = code->cur+1; + jcc(code, CC_B, no_sync); + mov_irdisp(code, 0, options->gen.context_reg, offsetof(z80_context, pc), SZ_W); + call(code, options->save_context_scratch); + pop_r(code, RAX); //return address in read/write func + pop_r(code, RBX); //return address in translated code + sub_ir(code, 5, RAX, SZ_PTR); //adjust return address to point to the call that got us here + mov_rrdisp(code, RBX, options->gen.context_reg, offsetof(z80_context, extra_pc), SZ_PTR); + mov_rrind(code, RAX, options->gen.context_reg, SZ_PTR); + //restore callee saved registers + pop_r(code, R15); + pop_r(code, R14); + pop_r(code, R13); + pop_r(code, R12); + pop_r(code, RBP); + pop_r(code, RBX); + *no_sync = code->cur - (no_sync + 1); + //return to caller of z80_run + retn(code); + + options->gen.handle_code_write = (code_ptr)z80_handle_code_write; -void init_z80_context(z80_context * context, x86_z80_options * options) + options->read_8 = gen_mem_fun(&options->gen, chunks, num_chunks, READ_8, &options->read_8_noinc); + options->write_8 = gen_mem_fun(&options->gen, chunks, num_chunks, WRITE_8, &options->write_8_noinc); + + options->gen.handle_cycle_limit_int = code->cur; + cmp_rdispr(code, options->gen.context_reg, offsetof(z80_context, int_cycle), options->gen.cycles, SZ_D); + code_ptr skip_int = code->cur+1; + jcc(code, CC_B, skip_int); + //set limit to the cycle limit + mov_rdispr(code, options->gen.context_reg, offsetof(z80_context, sync_cycle), options->gen.limit, SZ_D); + //disable interrupts + mov_irdisp(code, 0, options->gen.context_reg, offsetof(z80_context, iff1), SZ_B); + mov_irdisp(code, 0, options->gen.context_reg, offsetof(z80_context, iff2), SZ_B); + cycles(&options->gen, 7); + //save return address (in scratch1) to Z80 stack + sub_ir(code, 2, options->regs[Z80_SP], SZ_W); + mov_rr(code, options->regs[Z80_SP], options->gen.scratch2, SZ_W); + //we need to do check_cycles and cycles outside of the write_8 call + //so that the stack has the correct depth if we need to return to C + //for a synchronization + check_cycles(&options->gen); + cycles(&options->gen, 3); + //save word to write before call to write_8_noinc + push_r(code, options->gen.scratch1); + call(code, options->write_8_noinc); + //restore word to write + pop_r(code, options->gen.scratch1); + //write high byte to SP+1 + mov_rr(code, options->regs[Z80_SP], options->gen.scratch2, SZ_W); + add_ir(code, 1, options->gen.scratch2, SZ_W); + shr_ir(code, 8, options->gen.scratch1, SZ_W); + check_cycles(&options->gen); + cycles(&options->gen, 3); + call(code, options->write_8_noinc); + //dispose of return address as we'll be jumping somewhere else + pop_r(code, options->gen.scratch2); + //TODO: Support interrupt mode 0 and 2 + mov_ir(code, 0x38, options->gen.scratch1, SZ_W); + call(code, options->native_addr); + jmp_r(code, options->gen.scratch1); + *skip_int = code->cur - (skip_int+1); + cmp_rdispr(code, options->gen.context_reg, offsetof(z80_context, sync_cycle), options->gen.cycles, SZ_D); + code_ptr skip_sync = code->cur + 1; + jcc(code, CC_B, skip_sync); + options->do_sync = code->cur; + call(code, options->gen.save_context); + pop_rind(code, options->gen.context_reg); + //restore callee saved registers + pop_r(code, R15); + pop_r(code, R14); + pop_r(code, R13); + pop_r(code, R12); + pop_r(code, RBP); + pop_r(code, RBX); + //return to caller of z80_run + *skip_sync = code->cur - (skip_sync+1); + retn(code); + + options->read_io = code->cur; + check_cycles(&options->gen); + cycles(&options->gen, 4); + //Genesis has no IO hardware and always returns FF + //eventually this should use a second memory map array + mov_ir(code, 0xFF, options->gen.scratch1, SZ_B); + retn(code); + + options->write_io = code->cur; + check_cycles(&options->gen); + cycles(&options->gen, 4); + retn(code); + + options->read_16 = code->cur; + cycles(&options->gen, 3); + check_cycles(&options->gen); + //TODO: figure out how to handle the extra wait state for word reads to bank area + //may also need special handling to avoid too much stack depth when acces is blocked + push_r(code, options->gen.scratch1); + call(code, options->read_8_noinc); + mov_rr(code, options->gen.scratch1, options->gen.scratch2, SZ_B); + pop_r(code, options->gen.scratch1); + add_ir(code, 1, options->gen.scratch1, SZ_W); + cycles(&options->gen, 3); + check_cycles(&options->gen); + call(code, options->read_8_noinc); + shl_ir(code, 8, options->gen.scratch1, SZ_W); + mov_rr(code, options->gen.scratch2, options->gen.scratch1, SZ_B); + retn(code); + + options->write_16_highfirst = code->cur; + cycles(&options->gen, 3); + check_cycles(&options->gen); + push_r(code, options->gen.scratch2); + push_r(code, options->gen.scratch1); + add_ir(code, 1, options->gen.scratch2, SZ_W); + shr_ir(code, 8, options->gen.scratch1, SZ_W); + call(code, options->write_8_noinc); + pop_r(code, options->gen.scratch1); + pop_r(code, options->gen.scratch2); + cycles(&options->gen, 3); + check_cycles(&options->gen); + //TODO: Check if we can get away with TCO here + call(code, options->write_8_noinc); + retn(code); + + options->write_16_lowfirst = code->cur; + cycles(&options->gen, 3); + check_cycles(&options->gen); + push_r(code, options->gen.scratch2); + push_r(code, options->gen.scratch1); + call(code, options->write_8_noinc); + pop_r(code, options->gen.scratch1); + pop_r(code, options->gen.scratch2); + add_ir(code, 1, options->gen.scratch2, SZ_W); + shr_ir(code, 8, options->gen.scratch1, SZ_W); + cycles(&options->gen, 3); + check_cycles(&options->gen); + //TODO: Check if we can get away with TCO here + call(code, options->write_8_noinc); + retn(code); + + options->retrans_stub = code->cur; + //pop return address + pop_r(code, options->gen.scratch2); + call(code, options->gen.save_context); + //adjust pointer before move and call instructions that got us here + sub_ir(code, 11, options->gen.scratch2, SZ_PTR); + mov_rr(code, options->gen.scratch1, RDI, SZ_D); + mov_rr(code, options->gen.scratch2, RDX, SZ_PTR); + push_r(code, options->gen.context_reg); + call(code, (code_ptr)z80_retranslate_inst); + pop_r(code, options->gen.context_reg); + mov_rr(code, RAX, options->gen.scratch1, SZ_PTR); + call(code, options->gen.load_context); + jmp_r(code, options->gen.scratch1); + + options->run = (z80_run_fun)code->cur; + //save callee save registers + push_r(code, RBX); + push_r(code, RBP); + push_r(code, R12); + push_r(code, R13); + push_r(code, R14); + push_r(code, R15); + mov_rr(code, RDI, options->gen.context_reg, SZ_PTR); + call(code, options->load_context_scratch); + cmp_irdisp(code, 0, options->gen.context_reg, offsetof(z80_context, extra_pc), SZ_PTR); + code_ptr no_extra = code->cur+1; + jcc(code, CC_Z, no_extra); + push_rdisp(code, options->gen.context_reg, offsetof(z80_context, extra_pc)); + mov_irdisp(code, 0, options->gen.context_reg, offsetof(z80_context, extra_pc), SZ_PTR); + *no_extra = code->cur - (no_extra + 1); + jmp_rind(code, options->gen.context_reg); +} + +void * z80_gen_bank_write(uint32_t start_address, void * voptions) +{ + z80_options * options = voptions; + //TODO: Handle writes to bank register + return options; +} + +void init_z80_context(z80_context * context, z80_options * options) { memset(context, 0, sizeof(*context)); context->static_code_map = malloc(sizeof(*context->static_code_map)); @@ -2052,6 +2303,7 @@ void init_z80_context(z80_context * context, x86_z80_options * options) context->int_cycle = 0xFFFFFFFF; context->int_pulse_start = 0xFFFFFFFF; context->int_pulse_end = 0xFFFFFFFF; + context->run = options->run; } void z80_reset(z80_context * context) @@ -2062,55 +2314,52 @@ void z80_reset(z80_context * context) context->extra_pc = NULL; } -uint8_t * zbreakpoint_patch(z80_context * context, uint16_t address, uint8_t * native) +uint32_t zbreakpoint_patch(z80_context * context, uint16_t address, code_ptr dst) { - native = mov_ir(native, address, SCRATCH1, SZ_W); - native = call(native, context->bp_stub); - return native; + code_info code = {dst, dst+16}; + mov_ir(&code, address, SCRATCH1, SZ_W); + call(&code, context->bp_stub); + return code.cur-dst; } void zcreate_stub(z80_context * context) { - x86_z80_options * opts = context->options; - uint8_t * dst = opts->cur_code; - uint8_t * dst_end = opts->code_end; - if (dst_end - dst < 128) { - size_t size = 1024*1024; - dst = alloc_code(&size); - opts->code_end = dst_end = dst + size; - } - context->bp_stub = dst; + z80_options * opts = context->options; + code_info *code = &opts->gen.code; + check_code_prologue(code); + context->bp_stub = code->cur; //Calculate length of prologue - int check_int_size = z80_check_cycles_int(dst, 0) - dst; + check_cycles_int(&opts->gen, 0); + int check_int_size = code->cur-context->bp_stub; + code->cur = context->bp_stub; //Calculate length of patch - int patch_size = zbreakpoint_patch(context, 0, dst) - dst; + int patch_size = zbreakpoint_patch(context, 0, code->cur); //Save context and call breakpoint handler - dst = call(dst, (uint8_t *)z80_save_context); - dst = push_r(dst, SCRATCH1); - dst = mov_rr(dst, CONTEXT, RDI, SZ_Q); - dst = mov_rr(dst, SCRATCH1, RSI, SZ_W); - dst = call(dst, context->bp_handler); - dst = mov_rr(dst, RAX, CONTEXT, SZ_Q); + call(code, opts->gen.save_context); + push_r(code, opts->gen.scratch1); + mov_rr(code, opts->gen.context_reg, RDI, SZ_Q); + mov_rr(code, opts->gen.scratch1, RSI, SZ_W); + call(code, context->bp_handler); + mov_rr(code, RAX, opts->gen.context_reg, SZ_Q); //Restore context - dst = call(dst, (uint8_t *)z80_load_context); - dst = pop_r(dst, SCRATCH1); + call(code, opts->gen.load_context); + pop_r(code, opts->gen.scratch1); //do prologue stuff - dst = cmp_rr(dst, ZCYCLES, ZLIMIT, SZ_D); - uint8_t * jmp_off = dst+1; - dst = jcc(dst, CC_NC, dst + 7); - dst = pop_r(dst, SCRATCH1); - dst = add_ir(dst, check_int_size - patch_size, SCRATCH1, SZ_Q); - dst = push_r(dst, SCRATCH1); - dst = jmp(dst, (uint8_t *)z80_handle_cycle_limit_int); - *jmp_off = dst - (jmp_off+1); + cmp_rr(code, opts->gen.cycles, opts->gen.limit, SZ_D); + uint8_t * jmp_off = code->cur+1; + jcc(code, CC_NC, code->cur + 7); + pop_r(code, opts->gen.scratch1); + add_ir(code, check_int_size - patch_size, opts->gen.scratch1, SZ_Q); + push_r(code, opts->gen.scratch1); + jmp(code, opts->gen.handle_cycle_limit_int); + *jmp_off = code->cur - (jmp_off+1); //jump back to body of translated instruction - dst = pop_r(dst, SCRATCH1); - dst = add_ir(dst, check_int_size - patch_size, SCRATCH1, SZ_Q); - dst = jmp_r(dst, SCRATCH1); - opts->cur_code = dst; + pop_r(code, opts->gen.scratch1); + add_ir(code, check_int_size - patch_size, opts->gen.scratch1, SZ_Q); + jmp_r(code, opts->gen.scratch1); } void zinsert_breakpoint(z80_context * context, uint16_t address, uint8_t * bp_handler) @@ -2134,8 +2383,12 @@ void zremove_breakpoint(z80_context * context, uint16_t address) context->breakpoint_flags[address / sizeof(uint8_t)] &= ~(1 << (address % sizeof(uint8_t))); uint8_t * native = z80_get_native_address(context, address); if (native) { - z80_check_cycles_int(native, address); + z80_options * opts = context->options; + code_info tmp_code = opts->gen.code; + opts->gen.code.cur = native; + opts->gen.code.last = native + 16; + check_cycles_int(&opts->gen, address); + opts->gen.code = tmp_code; } } - |