Steward
分享是一種喜悅、更是一種幸福
程式語言 - GNU - Assembly (x64) - Hello, world!(int 0x80)
參考資訊：
https://chromium.googlesource.com/chromiumos/docs/+/HEAD/constants/syscalls.md
main.s
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | .global _start .datamsg: .ascii "hello, world!\n"len = . - msg .text_start: mov $1, %rax mov $1, %rbx mov $msg, %rcx mov $len, %rdx int $0x80 mov $60, %rax mov $0, %rbx int $0x80 |
| NR | syscall name | rax | arg0(rbx) | arg1(rcx) | arg2(rdx) |
|---|---|---|---|---|---|
| 1 | write | 1 | unsigned int fd | const char *buf | size_t count |
| 60 | exit | 60 | int error_code |
編譯、執行
$ x86_64-linux-gnu-gcc main.s -o main -static -nostdlib
$ qemu-x86_64 ./main
hello, world!