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使用AsmJIT生成X86-64代码调用C++函数触发EXC_BAD_ACCESS崩溃求助

问题:JIT编译代码调用C++打印函数时崩溃

我正在使用asmjit将一门脚本语言JIT编译为X86-64机器码。跳转至JIT生成的函数时能正常运行,但这些函数调用我的C++函数(内部会调用printf或cout)时,程序就会崩溃,找不到原因。

LLDB里查看的信息看似正常,下面的LLDB输出是不是说明内存引用-0x180(%rbp)导致了崩溃?这看起来不该有问题,rbp和rsp的寄存器值看起来是合理的。

帧#4是JIT生成的代码,所以没有函数名。

我是这类调试的新手,需要补充其他信息请告知。

* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=EXC_I386_GPFLT)
    frame #0: 0x00007ff8133bfebb libsystem_c.dylib`__vfprintf + 53
libsystem_c.dylib`:
->  0x7ff8133bfebb <+53>: movdqa %xmm0, -0x180(%rbp)
    0x7ff8133bfec3 <+61>: movq   0x10(%rcx), %rcx
    0x7ff8133bfec7 <+65>: movq   %rcx, -0x170(%rbp)
    0x7ff8133bfece <+72>: leaq   -0x288(%rbp), %rcx
Target 0: (myprog) stopped.
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=EXC_I386_GPFLT)
  * frame #0: 0x00007ff8133bfebb libsystem_c.dylib`__vfprintf + 53
    frame #1: 0x00007ff8133d1912 libsystem_c.dylib`vfprintf_l + 54
    frame #2: 0x00007ff8133edfd3 libsystem_c.dylib`printf + 174
    frame #3: 0x00000001000d6b8a myprog`myprog::print_i(x=123) at Core.cc:211:5
    frame #4: 0x00000001007a2030
    frame #5: 0x00000001000bf16b myprog`myprog::do_file_eval(mod=0x0000600001709000, stmtSeq=nullptr, showIR=false, log_asm=false) at Lang.cc:96:5
    frame #6: 0x0000000100080b5c myprog`run_file(path=0x00007ff7bfefef48, show_ir=false) at cmdline_main.cc:274:13
    frame #7: 0x00000001000845f9 myprog`main(argc=2, argv=0x00007ff7bfeff580) at cmdline_main.cc:403:9
    frame #8: 0x00007ff8131bd41f dyld`start + 1903
(lldb) register read
General Purpose Registers:
       rax = 0x0000000000000000
       rbx = 0x00007ff7bfefe908
       rcx = 0x00007ff7bfefe908
       rdx = 0x0000000100200474  "In print_i
"
       rdi = 0x00007ff856bfaa18  __sF + 152
       rsi = 0x00007ff856bf9da0  __global_locale
       rbp = 0x00007ff7bfefe818
       rsp = 0x00007ff7bfefe488
        r8 = 0x0000000100200474  "In print_i
"
        r9 = 0x00007ff7bfefe908
       r10 = 0x00007ff856bfac48  __sFX + 248
       r11 = 0x00007ff856bfac40  __sFX + 240
       r12 = 0x00007ff856bf9da0  __global_locale
       r13 = 0x00007ff7bfeff4d0
       r14 = 0x00007ff7bfefe908
       r15 = 0x0000000100200474  "In print_i
"
       rip = 0x00007ff8133bfebb  libsystem_c.dylib`__vfprintf + 53
    rflags = 0x0000000000010246
        cs = 0x000000000000002b
        fs = 0x0000000000000000
        gs = 0x0000000000000000

关联代码:print_i函数

void print_i(int64_t x) {
    printf("In print_i\n");
    printf("%lld\n", x);
}

内容的提问来源于stack exchange,提问作者Rob N

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最近更新时间:2026.07.13 10:02:04