diff options
| author | Kartik Agaram <vc@akkartik.com> | 2018-07-20 18:26:10 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2018-07-20 18:26:10 -0700 |
| commit | aa2e2155beb965b3396c01861085ecfec8841ecc (patch) | |
| tree | e3da09c7a0e919fd98629d8e791096aca47f6368 /subx | |
| parent | 21fe59329478a2d4db4f1d4f19b88f9978bffa6e (diff) | |
| download | mu-aa2e2155beb965b3396c01861085ecfec8841ecc.tar.gz | |
4380 - single-byte opcodes all documented
Diffstat (limited to 'subx')
| -rw-r--r-- | subx/012direct_addressing.cc | 2 | ||||
| -rw-r--r-- | subx/018functions.cc | 10 | ||||
| -rw-r--r-- | subx/019syscalls.cc | 3 |
3 files changed, 12 insertions, 3 deletions
diff --git a/subx/012direct_addressing.cc b/subx/012direct_addressing.cc index 61eb3d9d..601f7ab2 100644 --- a/subx/012direct_addressing.cc +++ b/subx/012direct_addressing.cc @@ -276,7 +276,7 @@ case 0x89: { // copy r32 to r/m32 //:: xchg :(before "End Initialize Op Names(name)") -put(name, 0x01, "swap the contents of r32 and rm32"); +put(name, 0x87, "swap the contents of r32 and rm32"); :(scenario xchg_r32_with_r32) % Reg[EBX].i = 0xaf; diff --git a/subx/018functions.cc b/subx/018functions.cc index c4fb5d23..ac6df740 100644 --- a/subx/018functions.cc +++ b/subx/018functions.cc @@ -1,6 +1,9 @@ //:: call -:(scenario call_imm32) +:(before "End Initialize Op Names(name)") +put(name, 0xe8, "call disp32"); + +:(scenario call_disp32) % Reg[ESP].u = 0x64; == 0x1 # op ModR/M SIB displacement immediate @@ -12,7 +15,7 @@ +run: jumping to 0x000000a6 :(before "End Single-Byte Opcodes") -case 0xe8: { // call imm32 relative to next EIP +case 0xe8: { // call disp32 relative to next EIP int32_t offset = imm32(); trace(2, "run") << "call imm32 0x" << HEXWORD << offset << end(); push(EIP); @@ -63,6 +66,9 @@ a0 00 00 00 # 0xa0 //:: ret +:(before "End Initialize Op Names(name)") +put(name, 0xc3, "return from most recent unfinished call"); + :(scenario ret) % Reg[ESP].u = 0x60; == 0x1 # code segment diff --git a/subx/019syscalls.cc b/subx/019syscalls.cc index 16a1c3ce..b67a36f0 100644 --- a/subx/019syscalls.cc +++ b/subx/019syscalls.cc @@ -1,3 +1,6 @@ +:(before "End Initialize Op Names(name)") +put(name, 0xcd, "software interrupt (0x80 only)"); + :(before "End Single-Byte Opcodes") case 0xcd: { // int imm8 (software interrupt) trace(2, "run") << "syscall" << end(); |