diff options
| author | Mike Pavone <pavone@retrodev.com> | 2013-01-17 08:19:29 -0800 |
|---|---|---|
| committer | Mike Pavone <pavone@retrodev.com> | 2013-01-17 08:19:29 -0800 |
| commit | f6ebaabe9ee2703a6d12162310d058f9159ed770 (patch) | |
| tree | f29d81596af833f523e62ab3e5dd01b0d8ea0022 | |
| parent | b1b72b0599b1c0f16e70ed93b7c2f8955d71b517 (diff) | |
Implement pc indexed mode as move dst
| -rw-r--r-- | m68k_to_x86.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/m68k_to_x86.c b/m68k_to_x86.c index 23e85a0..007c3f3 100644 --- a/m68k_to_x86.c +++ b/m68k_to_x86.c @@ -1039,6 +1039,76 @@ uint8_t * translate_m68k_move(uint8_t * dst, m68kinst * inst, x86_68k_options * 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) { |