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/ex4.subx | |
| parent | 4d53de8afa0d44e29d3caeb01ccdd02bc2e4cd70 (diff) | |
| download | mu-ecfbbfb5b58aaba9f9265cb13b9fb4a914bdcf37.tar.gz | |
5647 - experimental support for swapping OS
Diffstat (limited to 'examples/ex4.subx')
| -rw-r--r-- | examples/ex4.subx | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/examples/ex4.subx b/examples/ex4.subx index a8e0efaa..4ef72749 100644 --- a/examples/ex4.subx +++ b/examples/ex4.subx @@ -4,16 +4,16 @@ # $ ./subx translate examples/ex4.subx -o examples/ex4 # $ ./subx run examples/ex4 -== data 0x0a000000 +== data # the global variable we save to X: 0/imm32 # space for read() to write to -== code 0x09000000 +== code Entry: -# syscall(read, stdin, X, 1) +# read(stdin, X, 1) # . fd = 0 (stdin) bb/copy-to-ebx 0/imm32 # . data = X (location to write result to) @@ -21,10 +21,9 @@ b9/copy-to-ecx X/imm32 # . size = 1 character ba/copy-to-edx 1/imm32 # . syscall -b8/copy-to-eax 3/imm32/read -cd/syscall 0x80/imm8 +e8/call syscall_read/disp32 -# syscall(write, stdout, X, 1) +# write(stdout, X, 1) # . fd = 1 (stdout) bb/copy-to-ebx 1/imm32 # . initialize X (location to read from) @@ -32,11 +31,9 @@ b9/copy-to-ecx X/imm32 # . size = 1 character ba/copy-to-edx 1/imm32 # . 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 # . . vim:nowrap:textwidth=0 |