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我如何执行这个汇编代码?

[英]How do I execute this assembly code?

我已经用 JavaScript 编写了这个简单的代码,并使用 d8 来显示汇编代码。 现在,我想执行该汇编代码,但我无法执行。

这是我的代码

print('Hello')

这是我从 d8 得到的程序集

--- Raw source ---
print('Hello');


--- Code ---
source_position = 0
kind = FUNCTION
compiler = full-codegen
Instructions (size = 180)
0x13fb4a04740     0  55             push rbp
0x13fb4a04741     1  4889e5         REX.W movq rbp,rsp
0x13fb4a04744     4  56             push rsi
0x13fb4a04745     5  57             push rdi
0x13fb4a04746     6  488b4f2f       REX.W movq rcx,[rdi+0x2f]
0x13fb4a0474a    10  488b490f       REX.W movq rcx,[rcx+0xf]
0x13fb4a0474e    14  83411b01       addl [rcx+0x1b],0x1
0x13fb4a04752    18  41ff75a0       push [r13-0x60]
0x13fb4a04756    22  493ba5200c0000 REX.W cmpq rsp,[r13+0xc20]
0x13fb4a0475d    29  7305           jnc 36  (0x13fb4a04764)
0x13fb4a0475f    31  e8dce2f4ff     call StackCheck  (0x13fb4952a40)    ;; code: BUILTIN
0x13fb4a04764    36  48b80000000004000000 REX.W movq rax,0x400000000
0x13fb4a0476e    46  e86dfcffff     call 0x13fb4a043e0       ;; code: LOAD_GLOBAL_IC
0x13fb4a04773    51  50             push rax
0x13fb4a04774    52  49ba1123f8ee15360000 REX.W movq r10,0x3615eef82311    ;; object: 0x3615eef82311 <undefined>
0x13fb4a0477e    62  4152           push r10
0x13fb4a04780    64  49ba19b92ab6eb2a0000 REX.W movq r10,0x2aebb62ab919    ;; object: 0x2aebb62ab919 <String[5]: Hello>
0x13fb4a0478a    74  4152           push r10
0x13fb4a0478c    76  48ba0000000002000000 REX.W movq rdx,0x200000000
0x13fb4a04796    86  488b7c2410     REX.W movq rdi,[rsp+0x10]
0x13fb4a0479b    91  e820ffffff     call 0x13fb4a046c0       ;; code: CALL_IC
0x13fb4a047a0    96  488b75f8       REX.W movq rsi,[rbp-0x8]
0x13fb4a047a4   100  4883c408       REX.W addq rsp,0x8
0x13fb4a047a8   104  488945e8       REX.W movq [rbp-0x18],rax
0x13fb4a047ac   108  488b45e8       REX.W movq rax,[rbp-0x18]
0x13fb4a047b0   112  48bbd1ba2ab6eb2a0000 REX.W movq rbx,0x2aebb62abad1    ;; object: 0x2aebb62abad1 Cell for 6144
0x13fb4a047ba   122  83430bd1       addl [rbx+0xb],0xd1
0x13fb4a047be   126  791f           jns 159  (0x13fb4a047df)
0x13fb4a047c0   128  50             push rax
0x13fb4a047c1   129  e8fae1f4ff     call InterruptCheck  (0x13fb49529c0)    ;; code: BUILTIN
0x13fb4a047c6   134  58             pop rax
0x13fb4a047c7   135  48bbd1ba2ab6eb2a0000 REX.W movq rbx,0x2aebb62abad1    ;; object: 0x2aebb62abad1 Cell for 6144
0x13fb4a047d1   145  49ba0000000000180000 REX.W movq r10,0x180000000000
0x13fb4a047db   155  4c895307       REX.W movq [rbx+0x7],r10
0x13fb4a047df   159  c9             leavel
0x13fb4a047e0   160  c20800         ret 0x8
0x13fb4a047e3   163  498b45a0       REX.W movq rax,[r13-0x60]
0x13fb4a047e7   167  e9c4ffffff     jmp 112  (0x13fb4a047b0)
0x13fb4a047ec   172  0f1f4000       nop

现在我想执行那个汇编代码我得到这个错误:

cc -s 打印.s
print.s:1:1: 错误:64 位模式不支持 32 位绝对寻址

这是我的print.s

push rbp
movq rbp,rsp
push rsi
push rdi
movq rcx,[rdi+0x2f]
movq rcx,[rcx+0xf]
addl [rcx+0x1b],0x1
push [r13-0x60]
cmpq rsp,[r13+0xc20]
jnc 36
call StackCheck
movq rax,0x400000000
call 0x13fb4a043e0
push rax
movq r10,0x3615eef82311
push r10
movq r10,0x2aebb62ab919
push r10
movq rdx,0x200000000
movq rdi,[rsp+0x10]
call 0x13fb4a046c0
movq rsi,[rbp-0x8]
addq rsp,0x8
movq [rbp-0x18],rax
movq rax,[rbp-0x18]
movq rbx,0x2aebb62abad1
addl [rbx+0xb],0xd1
jns 159
push rax
call InterruptCheck
pop rax
movq rbx,0x2aebb62abad1
movq r10,0x180000000000
movq [rbx+0x7],r10
leavel
ret 0x8
movq rax,[r13-0x60]
jmp 112
nop

你不能从一个带有固定指针的程序中提取一个片段,复制粘贴它并期望它工作。

你的片段永远不会工作。
它引用仅在执行它的原始程序的上下文中有效的绝对地址。
由于ASLR,原始程序下次执行时地址可能会有所不同,而且OSX中的所有程序都必须可重定位; 即固定地址在 OSX 中不存在
在任何情况下,您都指向复制粘贴代码段中根本不存在的运行时代码。

您需要学习如何编写独立的“hallo world”汇编程序。

有 100 个教程详细说明了如何执行此操作,例如: http : //peter.michaux.ca/articles/assembly-hello-world-for-os-x

 hello.asm - a "hello, world" program using NASM section .text global mystart ; make the main function externally visible mystart: ; 1 print "hello, world" ; 1a prepare the arguments for the system call to write push dword mylen ; message length push dword mymsg ; message to write push dword 1 ; file descriptor value ; 1b make the system call to write mov eax, 0x4 ; system call number for write sub esp, 4 ; OS X (and BSD) system calls needs "extra space" on stack int 0x80 ; make the actual system call ; 1c clean up the stack add esp, 16 ; 3 args * 4 bytes/arg + 4 bytes extra space = 16 bytes ; 2 exit the program ; 2a prepare the argument for the sys call to exit push dword 0 ; exit status returned to the operating system ; 2b make the call to sys call to exit mov eax, 0x1 ; system call number for exit sub esp, 4 ; OS X (and BSD) system calls needs "extra space" on stack int 0x80 ; make the system call ; 2c no need to clean up the stack because no code here would executed: already exited section .data mymsg db "hello, world", 0xa ; string with a carriage-return mylen equ $-mymsg ; string length in bytes

如果您想编写在 OSX 下运行的汇编代码,您还需要了解OSX API 的工作原理

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