assembly 为什么hello world在ARM mac的汇编中“无效”?

xqnpmsa8  于 2022-12-04  发布在  Mac
关注(0)|答案(1)|浏览(155)

其他答案没有告诉我如何编译,我被卡住了
我在汇编中有一个简单的Hello World

.global start
    .align 2

    start: mov X0, #1
        adr     X1, hello
        mov     X2, #13
        mov     X16, #4
        svc     0

        mov     X0, #0
        mov     X16, #1
        svc     0

    hello: .ascii  "Hello\n"

我用clang hello.s -nostdlib -static编译了它
文件上说

% file ./a.out 
./a.out: Mach-O 64-bit executable arm64

obj dump显示了这一点,也许UNKNOWN_ARCHITECTURE是问题所在?

./a.out:     file format mach-o-arm64

    Disassembly of section .text:

    0000000100003fd8 <start>:
        100003fd8:  d2800020    mov x0, #0x1                    // #1
        100003fdc:  100000e1    adr x1, 100003ff8 <hello>
        100003fe0:  d28001a2    mov x2, #0xd                    // #13
        100003fe4:  d2800090    mov x16, #0x4                       // #4
        100003fe8:  d4000001    svc #0x0
        100003fec:  d2800000    mov x0, #0x0                    // #0
        100003ff0:  d2800030    mov x16, #0x1                       // #1
        100003ff4:  d4000001    svc #0x0

    0000000100003ff8 <hello>:
        100003ff8:  6c6c6548    ldnp    d8, d25, [x10, #-320]
        100003ffc:  Address 0x0000000100003ffc is out of bounds.

    Disassembly of section LC_THREAD.UNKNOWN_ARCHITECTURE.0:

    0000000000000000 <LC_THREAD.UNKNOWN_ARCHITECTURE.0>:
        ...
    100:    00003fd8    udf #16344
    104:    00000001    udf #1
        ...

在zsh中运行时显示“killed”,错误代码为137。
这是dtruss说的

% sudo dtruss ./a.out                                     
    dtrace: system integrity protection is on, some features will not be available

    dtrace: failed to execute ./a.out: Bad executable (or shared library)

我哪里做错了?我在M2上

ql3eal8s

ql3eal8s1#

arm64 macOS上的内核不允许静态二进制文件。
但是你不需要你的二进制文件是静态的,只要把start重命名为_main,然后用clang hello.s编译,它就会工作。

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