Mercurial > repos > blastem
changeset 100:45cd7d3e7918
Implement areg indexed mode for lea
author | Mike Pavone <pavone@retrodev.com> |
---|---|
date | Thu, 27 Dec 2012 22:11:26 -0800 |
parents | 8491de5d6c06 |
children | d7789186ba5e |
files | m68k_to_x86.c |
diffstat | 1 files changed, 48 insertions(+), 1 deletions(-) [+] |
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line diff
--- a/m68k_to_x86.c Thu Dec 27 22:05:22 2012 -0800 +++ b/m68k_to_x86.c Thu Dec 27 22:11:26 2012 -0800 @@ -1139,7 +1139,7 @@ uint8_t * translate_m68k_lea(uint8_t * dst, m68kinst * inst, x86_68k_options * opts) { - int8_t dst_reg = native_reg(&(inst->dst), opts); + int8_t dst_reg = native_reg(&(inst->dst), opts), sec_reg; switch(inst->src.addr_mode) { case MODE_AREG_INDIRECT: @@ -1178,6 +1178,53 @@ dst = add_irdisp8(dst, inst->src.params.regs.displacement, CONTEXT, reg_offset(&(inst->src)), SZ_D); } break; + case MODE_AREG_INDEX_DISP8: + dst = cycles(dst, 6);//TODO: Check to make sure this is correct + if (opts->aregs[inst->src.params.regs.pri] >= 0) { + dst = mov_rr(dst, opts->aregs[inst->src.params.regs.pri], SCRATCH2, SZ_D); + } else { + dst = mov_rdisp8r(dst, CONTEXT, reg_offset(&(inst->src)), SCRATCH2, 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], 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 (inst->src.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 (inst->src.params.regs.displacement) { + dst = add_ir(dst, inst->src.params.regs.displacement, SCRATCH2, SZ_D); + } + if (dst_reg >= 0) { + dst = mov_rr(dst, SCRATCH2, dst_reg, SZ_D); + } else { + dst = mov_rrdisp8(dst, SCRATCH2, CONTEXT, reg_offset(&(inst->src)), SZ_D); + } + break; case MODE_PC_DISPLACE: dst = cycles(dst, 8); if (dst_reg >= 0) {