diff options
| author | Kartik Agaram <vc@akkartik.com> | 2019-09-11 19:04:49 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2019-09-11 19:53:23 -0700 |
| commit | ecfbbfb5b58aaba9f9265cb13b9fb4a914bdcf37 (patch) | |
| tree | 486cd5f4ee75323b5c733912c7a58501d65b0325 /examples/ex6.subx | |
| parent | 4d53de8afa0d44e29d3caeb01ccdd02bc2e4cd70 (diff) | |
| download | mu-ecfbbfb5b58aaba9f9265cb13b9fb4a914bdcf37.tar.gz | |
5647 - experimental support for swapping OS
Diffstat (limited to 'examples/ex6.subx')
| -rw-r--r-- | examples/ex6.subx | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/examples/ex6.subx b/examples/ex6.subx index 396fa947..9955b201 100644 --- a/examples/ex6.subx +++ b/examples/ex6.subx @@ -5,13 +5,13 @@ # $ ./subx run examples/ex6 # Hello, world! -== code 0x09000000 -# instruction effective address register displacement immediate +== code + # . 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 Entry: - # syscall(write, stdout, X, Size) + # write(stdout, X, Size) # . fd = 1 (stdout) bb/copy-to-ebx 1/imm32 # . initialize X (location to write result to) @@ -19,14 +19,12 @@ Entry: # . initialize Size 8b/copy 0/mod/indirect 5/rm32/.disp32 . . 2/r32/edx Size/disp32 . # copy *Size to edx # . syscall - b8/copy-to-eax 4/imm32/write - cd/syscall 0x80/imm8 + e8/call syscall_write/disp32 - # syscall(exit, ebx) - b8/copy-to-eax 1/imm32/exit - cd/syscall 0x80/imm8 + # exit(ebx) + e8/call syscall_exit/disp32 -== data 0x0a000000 +== data Size: # size of string 0x0e/imm32 # 14 |