diff options
| author | Michael Pavone <pavone@retrodev.com> | 2014-12-27 14:51:50 -0800 |
|---|---|---|
| committer | Michael Pavone <pavone@retrodev.com> | 2014-12-27 14:51:50 -0800 |
| commit | 7103c11ebae317680cbea6b4ae2c724206d8a6d4 (patch) | |
| tree | 11d779fa90434c44e9d3bf7410696243c12de26d /m68k_core_x86.c | |
| parent | 33f11a9c6f4b7497ba6830130501f1df1b90c463 (diff) | |
Decrement address register after fetching source in move with -(ax) dest to avoid bug when src is the dst addres reg
Diffstat (limited to 'm68k_core_x86.c')
| -rw-r--r-- | m68k_core_x86.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/m68k_core_x86.c b/m68k_core_x86.c index ef84721..4169389 100644 --- a/m68k_core_x86.c +++ b/m68k_core_x86.c @@ -604,10 +604,8 @@ void translate_m68k_move(m68k_options * opts, m68kinst * inst) break; case MODE_AREG_PREDEC: dec_amount = inst->extra.size == OPSIZE_WORD ? 2 : (inst->extra.size == OPSIZE_LONG ? 4 : (inst->dst.params.regs.pri == 7 ? 2 : 1)); - subi_areg(opts, dec_amount, inst->dst.params.regs.pri); case MODE_AREG_INDIRECT: case MODE_AREG_POSTINC: - areg_to_native(opts, inst->dst.params.regs.pri, opts->gen.scratch2); if (src.mode == MODE_REG_DIRECT) { if (src.base != opts->gen.scratch1) { mov_rr(code, src.base, opts->gen.scratch1, inst->extra.size); @@ -617,6 +615,10 @@ void translate_m68k_move(m68k_options * opts, m68kinst * inst) } else { mov_ir(code, src.disp, opts->gen.scratch1, inst->extra.size); } + if (inst->dst.addr_mode == MODE_AREG_PREDEC) { + subi_areg(opts, dec_amount, inst->dst.params.regs.pri); + } + areg_to_native(opts, inst->dst.params.regs.pri, opts->gen.scratch2); break; case MODE_AREG_DISPLACE: cycles(&opts->gen, BUS); |