diff options
| -rw-r--r-- | subx/013direct_addressing.cc | 10 | ||||
| -rw-r--r-- | subx/014indirect_addressing.cc | 10 |
2 files changed, 10 insertions, 10 deletions
diff --git a/subx/013direct_addressing.cc b/subx/013direct_addressing.cc index 5177252f..c97fd833 100644 --- a/subx/013direct_addressing.cc +++ b/subx/013direct_addressing.cc @@ -343,11 +343,11 @@ put(name, "89", "copy r32 to rm32"); :(before "End Single-Byte Opcodes") case 0x89: { // copy r32 to r/m32 uint8_t modrm = next(); - uint8_t reg2 = (modrm>>3)&0x7; - trace(90, "run") << "copy " << rname(reg2) << " to r/m32" << end(); - int32_t* arg1 = effective_address(modrm); - *arg1 = Reg[reg2].i; - trace(90, "run") << "storing 0x" << HEXWORD << *arg1 << end(); + uint8_t rsrc = (modrm>>3)&0x7; + trace(90, "run") << "copy " << rname(rsrc) << " to r/m32" << end(); + int32_t* dest = effective_address(modrm); + *dest = Reg[rsrc].i; + trace(90, "run") << "storing 0x" << HEXWORD << *dest << end(); break; } diff --git a/subx/014indirect_addressing.cc b/subx/014indirect_addressing.cc index 8554b6ef..a0369590 100644 --- a/subx/014indirect_addressing.cc +++ b/subx/014indirect_addressing.cc @@ -404,12 +404,12 @@ f0 cc bb aa # 0xf0 with more data in following bytes :(before "End Single-Byte Opcodes") case 0x88: { // copy r8 to r/m8 uint8_t modrm = next(); - uint8_t reg2 = (modrm>>3)&0x7; - trace(90, "run") << "copy lowermost byte of " << rname(reg2) << " to r8/m8-at-r32" << end(); + uint8_t rsrc = (modrm>>3)&0x7; + trace(90, "run") << "copy lowermost byte of " << rname(rsrc) << " to r8/m8-at-r32" << end(); // use unsigned to zero-extend 8-bit value to 32 bits - uint8_t* arg1 = reinterpret_cast<uint8_t*>(effective_address(modrm)); - *arg1 = Reg[reg2].u; - trace(90, "run") << "storing 0x" << HEXBYTE << NUM(*arg1) << end(); + uint8_t* dest = reinterpret_cast<uint8_t*>(effective_address(modrm)); + *dest = Reg[rsrc].u; + trace(90, "run") << "storing 0x" << HEXBYTE << NUM(*dest) << end(); break; } |