.section __DATA,__data
    .p2align 2
    buffer:
        .zero 4096

.section __TEXT,__text
.global _main
.build_version macos, 13, 0

.p2align 2
_main:
    // x9: buf ptr
    // x10: file descriptor storage
    // x11: file size in bytes

    //init ptr to buf
    adrp    x9, buffer@PAGE              
    add     x9, x9, buffer@PAGEOFF

    // open file
    adr     x0, file_path                      
    mov     x1, #0
    mov     x2, #444
    mov     x16, #5
    svc     0

    // copy file descriptor to x10
    mov     x10, x0                    

.p2align 2
stream_buffer:
    // make syscall read, file descriptor is in x10                                   
    mov     x0, x10
    mov     x1, x9                      
    mov     x2, #4096
    mov     x16, #3
    svc     0

    // if x0 == 0, exit, no bytes were read
    cmp     x0, #0
    beq     exit
    blt     error

    // store number of bytes read
    mov     x11, x0

    // write to stdout from buffer
    mov     x0, #1
    mov     x1, x9
    mov     x2, x11        
    mov     x16, #4
    svc     0

    b       stream_buffer

.p2align 2
exit:
    // exit with status code 0
    mov     x0, #0                      
    mov     x16, #1
    svc     0

.p2align 2
error:
    mov     x0, #1
    adr     x1, file_not_found_error_string
    mov     x2, #20
    mov     x16, #4
    svc     0
    b       exit

.p2align 2
file_path:
    .asciz "/test.txt"

.p2align 2
file_not_found_error_string:
    .asciz "file was not found.\n"

字符串
我试图通过编写一个简单的程序来学习汇编语言，该程序模拟了“cat”Linux命令。我使用的是带有M1芯片的macbook air 2020。我的程序编译得很好，但是当执行二进制文件时，我遇到了我的程序期望输入，然后它会返回任何输入。我相信我滥用了我的文件描述符。感谢任何帮助。