diff options
| author | Mike Pavone <pavone@retrodev.com> | 2012-12-30 09:55:07 -0800 |
|---|---|---|
| committer | Mike Pavone <pavone@retrodev.com> | 2012-12-30 09:55:07 -0800 |
| commit | 73e3c1947cdca56def7fd6c470fba7a7f6905d2f (patch) | |
| tree | 2e521ffd9163eef5c6aada131ce850f8d5ec38a1 | |
| parent | a9efeb086e73201fc1b31287f88dcc8effcb0784 (diff) | |
Add support for pc indexed addressing mode to lea
| -rw-r--r-- | m68k_to_x86.c | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/m68k_to_x86.c b/m68k_to_x86.c index 624c33a..bd112e4 100644 --- a/m68k_to_x86.c +++ b/m68k_to_x86.c @@ -1238,13 +1238,56 @@ uint8_t * translate_m68k_lea(uint8_t * dst, m68kinst * inst, x86_68k_options * o dst = mov_irdisp8(dst, inst->src.params.regs.displacement + inst->address+2, CONTEXT, offsetof(m68k_context, aregs) + 4 * inst->dst.params.regs.pri, SZ_D); } break; + case MODE_PC_INDEX_DISP8: + dst = cycles(dst, BUS*3);//TODO: CHeck that this is correct + dst = mov_ir(dst, inst->address+2, SCRATCH1, SZ_D); + sec_reg = (inst->src.params.regs.sec >> 1) & 0x7; + if (inst->src.params.regs.sec & 1) { + if (inst->src.params.regs.sec & 0x10) { + if (opts->aregs[sec_reg] >= 0) { + dst = add_rr(dst, opts->aregs[sec_reg], SCRATCH1, SZ_D); + } else { + dst = add_rdisp8r(dst, CONTEXT, offsetof(m68k_context, aregs) + sizeof(uint32_t)*sec_reg, SCRATCH1, SZ_D); + } + } else { + if (opts->dregs[sec_reg] >= 0) { + dst = add_rr(dst, opts->dregs[sec_reg], SCRATCH1, SZ_D); + } else { + dst = add_rdisp8r(dst, CONTEXT, offsetof(m68k_context, dregs) + sizeof(uint32_t)*sec_reg, SCRATCH1, SZ_D); + } + } + } else { + if (inst->src.params.regs.sec & 0x10) { + if (opts->aregs[sec_reg] >= 0) { + dst = movsx_rr(dst, opts->aregs[sec_reg], SCRATCH2, SZ_W, SZ_D); + } else { + dst = movsx_rdisp8r(dst, CONTEXT, offsetof(m68k_context, aregs) + sizeof(uint32_t)*sec_reg, SCRATCH2, SZ_W, SZ_D); + } + } else { + if (opts->dregs[sec_reg] >= 0) { + dst = movsx_rr(dst, opts->dregs[sec_reg], SCRATCH2, SZ_W, SZ_D); + } else { + dst = movsx_rdisp8r(dst, CONTEXT, offsetof(m68k_context, dregs) + sizeof(uint32_t)*sec_reg, SCRATCH2, SZ_W, SZ_D); + } + } + dst = add_rr(dst, SCRATCH2, SCRATCH1, SZ_D); + } + if (inst->src.params.regs.displacement) { + dst = add_ir(dst, inst->src.params.regs.displacement, SCRATCH1, SZ_D); + } + if (dst_reg >= 0) { + dst = mov_rr(dst, SCRATCH1, dst_reg, SZ_D); + } else { + dst = mov_rrdisp8(dst, SCRATCH1, CONTEXT, reg_offset(&(inst->dst)), SZ_D); + } + break; case MODE_ABSOLUTE: case MODE_ABSOLUTE_SHORT: dst = cycles(dst, (inst->src.addr_mode == MODE_ABSOLUTE) ? BUS * 3 : BUS * 2); if (dst_reg >= 0) { dst = mov_ir(dst, inst->src.params.immed, dst_reg, SZ_D); } else { - dst = mov_irdisp8(dst, inst->src.params.immed, CONTEXT, offsetof(m68k_context, aregs) + 4 * inst->dst.params.regs.pri, SZ_D); + dst = mov_irdisp8(dst, inst->src.params.immed, CONTEXT, reg_offset(&(inst->dst)), SZ_D); } break; default: |