Mercurial > repos > blastem
changeset 196:f8955d33486d
Implement pc indexed mode as move dst
author | Mike Pavone <pavone@retrodev.com> |
---|---|
date | Thu, 17 Jan 2013 08:19:29 -0800 |
parents | c615061f7914 |
children | 7c227a8ec53d |
files | m68k_to_x86.c |
diffstat | 1 files changed, 70 insertions(+), 0 deletions(-) [+] |
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line diff
--- a/m68k_to_x86.c Wed Jan 16 22:50:02 2013 -0800 +++ b/m68k_to_x86.c Thu Jan 17 08:19:29 2013 -0800 @@ -1039,6 +1039,76 @@ break; } break; + case MODE_PC_INDEX_DISP8: + dst = cycles(dst, 6);//TODO: Check to make sure this is correct + dst = mov_ir(dst, inst->address, SCRATCH2, SZ_D); + sec_reg = (inst->dst.params.regs.sec >> 1) & 0x7; + if (inst->dst.params.regs.sec & 1) { + if (inst->dst.params.regs.sec & 0x10) { + if (opts->aregs[sec_reg] >= 0) { + dst = add_rr(dst, opts->aregs[sec_reg], SCRATCH2, SZ_D); + } else { + dst = add_rdisp8r(dst, CONTEXT, offsetof(m68k_context, aregs) + sizeof(uint32_t)*sec_reg, SCRATCH2, SZ_D); + } + } else { + if (opts->dregs[sec_reg] >= 0) { + dst = add_rr(dst, opts->dregs[sec_reg], SCRATCH2, SZ_D); + } else { + dst = add_rdisp8r(dst, CONTEXT, offsetof(m68k_context, dregs) + sizeof(uint32_t)*sec_reg, SCRATCH2, SZ_D); + } + } + } else { + if (src.base == SCRATCH1) { + dst = push_r(dst, SCRATCH1); + } + if (inst->dst.params.regs.sec & 0x10) { + if (opts->aregs[sec_reg] >= 0) { + dst = movsx_rr(dst, opts->aregs[sec_reg], SCRATCH1, SZ_W, SZ_D); + } else { + dst = movsx_rdisp8r(dst, CONTEXT, offsetof(m68k_context, aregs) + sizeof(uint32_t)*sec_reg, SCRATCH1, SZ_W, SZ_D); + } + } else { + if (opts->dregs[sec_reg] >= 0) { + dst = movsx_rr(dst, opts->dregs[sec_reg], SCRATCH1, SZ_W, SZ_D); + } else { + dst = movsx_rdisp8r(dst, CONTEXT, offsetof(m68k_context, dregs) + sizeof(uint32_t)*sec_reg, SCRATCH1, SZ_W, SZ_D); + } + } + dst = add_rr(dst, SCRATCH1, SCRATCH2, SZ_D); + if (src.base == SCRATCH1) { + dst = pop_r(dst, SCRATCH1); + } + } + if (inst->dst.params.regs.displacement) { + dst = add_ir(dst, inst->dst.params.regs.displacement, SCRATCH2, SZ_D); + } + if (src.mode == MODE_REG_DIRECT) { + if (src.base != SCRATCH1) { + dst = mov_rr(dst, src.base, SCRATCH1, inst->extra.size); + } + } else if (src.mode == MODE_REG_DISPLACE8) { + dst = mov_rdisp8r(dst, src.base, src.disp, SCRATCH1, inst->extra.size); + } else { + dst = mov_ir(dst, src.disp, SCRATCH1, inst->extra.size); + } + if (inst->dst.addr_mode != MODE_AREG) { + dst = cmp_ir(dst, 0, flags_reg, inst->extra.size); + dst = setcc_r(dst, CC_Z, FLAG_Z); + dst = setcc_r(dst, CC_S, FLAG_N); + } + switch (inst->extra.size) + { + case OPSIZE_BYTE: + dst = call(dst, (char *)m68k_write_byte); + break; + case OPSIZE_WORD: + dst = call(dst, (char *)m68k_write_word); + break; + case OPSIZE_LONG: + dst = call(dst, (char *)m68k_write_long_highfirst); + break; + } + break; case MODE_ABSOLUTE: case MODE_ABSOLUTE_SHORT: if (src.mode == MODE_REG_DIRECT) {