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| author | Kartik Agaram <vc@akkartik.com> | 2020-05-28 22:31:52 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2020-05-28 22:31:52 -0700 |
| commit | 583a966d3e0b0f0e0fa9166986c877fda0643196 (patch) | |
| tree | e62b31a3ed4f615330d7bf42d83a84b54e0c315f /105files.subx | |
| parent | 429cebf3e4c4ce5ba81443968d28b88bdfd2584e (diff) | |
| download | mu-583a966d3e0b0f0e0fa9166986c877fda0643196.tar.gz | |
6422 - size-of for handles
Diffstat (limited to '105files.subx')
| -rw-r--r-- | 105files.subx | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/105files.subx b/105files.subx index ae85b493..ee1a2d6b 100644 --- a/105files.subx +++ b/105files.subx @@ -18,19 +18,24 @@ open: # filename: (addr array byte), write?: boolean, out: (addr handle buffere 8b/-> *ecx 2/r32/edx 42/increment-edx # var s/esi: (stream size) - 29/subtract-from %esp 0/r32/eax - 50/push-eax # size + 29/subtract-from %esp 2/r32/edx + 52/push-edx # size 68/push 0/imm32/read 68/push 0/imm32/write 89/<- %esi 4/r32/esp # copy filename and a final null character (clear-stream %esi) (write %esi %ecx) + # spill edx + 52/push-edx # var fd/ecx: fd = open(filename) 8d/copy-address *(esi+0xc) 3/r32/ebx 8b/-> *(ebp+0xc) 1/r32/ecx/flags + ba/copy-to-edx 0x180/imm32/permissions e8/call syscall_open/disp32 89/<- %ecx 0/r32/eax + # restore edx + 5a/pop-to-edx # allocate a buffered-file (allocate Heap 0x1010 *(ebp+0x10)) # file-buffer-size + 16 for other fields # var out-addr/edi: (addr buffered-file) |