diff options
Diffstat (limited to 'subx/examples/ex9.subx')
| -rw-r--r-- | subx/examples/ex9.subx | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/subx/examples/ex9.subx b/subx/examples/ex9.subx index 00f2d661..964151a2 100644 --- a/subx/examples/ex9.subx +++ b/subx/examples/ex9.subx @@ -17,20 +17,20 @@ # Locals start from ESP-4 downwards. == code -# instruction effective address operand displacement immediate -# op subop mod rm32 base index scale r32 -# 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes +# instruction effective address register displacement immediate +# . op subop mod rm32 base index scale r32 +# . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes - # prolog + # . prolog 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP - # call ascii-difference(argv[1], argv[2]) + # . . call ascii-difference(argv[1], argv[2]) # push argv[2] ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # push argv[1] ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x8/disp8 . # push *(EBP+8) - # call + # . . call e8/call ascii-difference/disp32 - # discard args + # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # exit(EAX) 89/copy 3/mod/direct 3/rm32/EBX . . . 0/r32/EAX . . # copy EAX to EBX @@ -48,4 +48,4 @@ ascii-difference: # (s1, s2) : null-terminated ascii strings 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX c3/return -# vim:nowrap:textwidth=0 +# . . vim:nowrap:textwidth=0 |