diff options
| author | Kartik Agaram <vc@akkartik.com> | 2020-01-27 00:36:44 -0800 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2020-01-27 00:36:44 -0800 |
| commit | 71eb22a5bf94f5fa0a3c95212450e3c6a1a6a990 (patch) | |
| tree | 56307b5145be44b2239d3c782234309ed714f1b6 /050_write.subx | |
| parent | 1a65c3af0f797892f5981f8ebd33c275c1ef06b0 (diff) | |
| download | mu-71eb22a5bf94f5fa0a3c95212450e3c6a1a6a990.tar.gz | |
5924
Diffstat (limited to '050_write.subx')
| -rw-r--r-- | 050_write.subx | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/050_write.subx b/050_write.subx index a7467b0d..24acf888 100644 --- a/050_write.subx +++ b/050_write.subx @@ -11,7 +11,7 @@ Entry: # just exit; can't test _write just yet b8/copy-to-eax 1/imm32/exit cd/syscall 0x80/imm8 -_write: # fd : int, s : (addr array byte) +_write: # fd: int, s: (addr array byte) # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp @@ -21,12 +21,12 @@ _write: # fd : int, s : (addr array byte) 52/push-edx 53/push-ebx # syscall(write, fd, (data) s+4, (size) *s) - # . fd : ebx + # . ebx = fd 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 3/r32/ebx 8/disp8 . # copy *(ebp+8) to ebx - # . data : ecx = s+4 + # . var data/ecx: (addr byte) = s+4 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0xc/disp8 . # copy *(ebp+12) to ecx 81 0/subop/add 3/mod/direct 1/rm32/ecx . . . . . 4/imm32 # add to ecx - # . size : edx = *s + # . var size/edx: int = *s 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 0xc/disp8 . # copy *(ebp+12) to edx 8b/copy 0/mod/indirect 2/rm32/edx . . . 2/r32/edx . . # copy *edx to edx # . syscall |