diff options
Diffstat (limited to 'subx/013immediate_addressing.cc')
| -rw-r--r-- | subx/013immediate_addressing.cc | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/subx/013immediate_addressing.cc b/subx/013immediate_addressing.cc index dd1ce4c0..2e4b459a 100644 --- a/subx/013immediate_addressing.cc +++ b/subx/013immediate_addressing.cc @@ -350,6 +350,7 @@ case 0xb8: { // copy imm32 to r32 } //: + :(scenario copy_imm32_to_mem_at_r32) % Reg[3].i = 0x60; # op ModRM SIB displacement immediate @@ -366,3 +367,24 @@ case 0xc7: { // copy imm32 to r32 *arg1 = arg2; break; } + +//:: push + +:(scenario push_imm32) +% Reg[ESP].u = 0x14; +# op ModRM SIB displacement immediate + 68 af 00 00 00 # push *EAX (reg 0) to stack ++run: push imm32 0x000000af ++run: ESP is now 0x00000010 ++run: contents at ESP: 0x000000af + +:(before "End Single-Byte Opcodes") +case 0x68: { + int32_t val = imm32(); + trace(2, "run") << "push imm32 0x" << HEXWORD << val << end(); + Reg[ESP].u -= 4; + *reinterpret_cast<uint32_t*>(&Mem.at(Reg[ESP].u)) = val; + trace(2, "run") << "ESP is now 0x" << HEXWORD << Reg[ESP].u << end(); + trace(2, "run") << "contents at ESP: 0x" << HEXWORD << *reinterpret_cast<uint32_t*>(&Mem.at(Reg[ESP].u)) << end(); + break; +} |