反汇编的.s文件在nasm中不可接受的语法是什么？ [英] What syntax does a disassembled .s file is not acceptable in nasm?
问题描述
这段代码是一个C程序（冒泡排序），反汇编成汇编。如果我将它放在.asm文件中并使用nasm进行组装，如何运行以下代码？如果您知道需要更改什么，请说出要更改的内容。例如，我明白nasm不会接受 DWORD PTR ，但我没有找到相应的解决方法。谢谢
.filesort.c.intel_syntax noprefix .text .globl
sort .type sort，@function
sort：.LFB0：
.cfi_startproc
push rbp
.cfi_def_cfa_offset 16
.cfi_offset 6，-16
mov rbp，rsp
.cfi_def_cfa_register 6
mov QWORD PTR [rbp-24]，rdi
mov DWORD PTR [rbp-28]，esi
mov DWORD PTR [rbp-12]，0
jmp .L2
.L6：
mov DWORD PTR [rbp-8]，0
jmp .L3
.L5：
mov eax，DWORD PTR [rbp-8 ]
cdqe
sal rax，2
add rax，QWORD PTR [rbp-24]
mov edx，DWORD PTR [rax]
mov eax，DWORD PTR [ rbp-8]
cdqe
add rax，1
sal rax，2
add rax，QWORD PTR [rbp-24]
mov eax，DWORD PTR [rax ]
cmp edx，eax
jle .L4
mov eax，DWORD PTR [rbp-8]
cdqe
sal rax，2
add rax， QWORD PTR [rbp-24]
mov eax，DWORD PTR [rax]
mov DWORD PT R [rbp-4]，eax
mov eax，DWORD PTR [rbp-8]
cdqe
sal rax，2
add rax，QWORD PTR [rbp-24]
mov edx，DWORD PTR [rbp-8]
movsx rdx，edx
add rdx，1
sal rdx，2
add rdx，QWORD PTR [rbp-24 ]
mov edx，DWORD PTR [rdx]
mov DWORD PTR [rax]，edx
mov eax，DWORD PTR [rbp-8]
cdqe
add rax ，1
sal rax，2
add rax，QWORD PTR [rbp-24]
mov edx，DWORD PTR [rbp-4]
mov DWORD PTR [rax]，edx
.L4：
add DWORD PTR [rbp-8]，1
.L3：
mov eax，DWORD PTR [rbp-28]
sub eax，1
sub eax，DWORD PTR [rbp-12]
cmp eax，DWORD PTR [rbp-8]
jg .L5
add DWORD PTR [rbp-12]，1
.L2：
mov eax，DWORD PTR [rbp-28]
sub eax，1
cmp eax，DWORD PTR [rbp-12]
jg .L6
pop rbp
.cfi_def_cfa 7,8
ret
.cfi_endproc
.LFE0：
.size sort，。-s
.identGCC：（Ubuntu / Linaro 4.6.3-1ubuntu5）4.6.3
.section .note.GNU-stack，@ progbits
只要删除 PTR $ b <
$ b p $ p> ; file：gas-nasm-sort.asm
bits 64
sort：
push rbp
mov rbp，rsp
mov QWORD [rbp-24] ，rdi
mov DWORD [rbp-28]，esi
mov DWORD [rbp-12]，0
jmp .L2
.L6：
mov DWORD [rbp-8]，0
jmp .L3
.L5：
mov eax，DWORD [rbp-8]
cdqe
sal rax，2
add rax，QWORD [rbp-24]
mov edx，DWORD [rax]
mov eax，DWORD [rbp-8]
cdqe
add rax，1
sal rax，2
add rax，QWORD [rbp-24]
mov eax，DWORD [rax]
cmp edx，eax
jle .L4
mov eax，DWORD [rbp-8]
cdqe
sal rax，2
add rax，QWORD [rbp-24]
mov eax，DWORD [rax]
mov DWORD [rbp-4]，eax
mov eax，DWORD [rbp-8]
cdqe
sal rax，2
add rax，QWORD [rbp- 24]
mov edx，DWORD [rbp-8]
movsx rdx，edx
add rdx，1
sal rdx，2
add rdx，QWORD [rbp- 24]
mov edx，DWORD [rdx]
mov DWORD [rax]，edx
mov eax，DWORD [rbp-8]
cdqe
add rax，1
sal rax，2
add rax，QWORD [rbp-24]
mov edx，DWORD [rbp-4]
mov DWORD [rax]，edx
.L4：
add DWORD [rbp-8]，1
.L3：
mov eax，DWORD [rbp-28]
sub eax，1
sub eax，DWORD [rbp-12]
cmp eax， DWORD [rbp-8]
jg .L5
add DWORD [rbp-12]，1
.L2：
mov eax，DWORD [rbp-28]
sub eax，1
cmp eax，DWORD [rbp-12]
jg .L6
pop rbp
ret
命令：
nasm gas-nasm-sort .asm -f bin -o gas-nasm-sort.bin
但是，还有NASM文档。阅读。特别是这些部分：
$ ul
2.2.2 NASM需要内存引用的方括号
2.2.3 NASM不存储变量类型
This code is a C program (bubble sort) disassembled into assembly. How can I make the following code run if I put it in a .asm file and use nasm to assemble? If you know what needs changing, please say what to change it to. For instance I understand that nasm won't accept DWORD PTR, but I haven't found out what to do instead. Thanks
.file "sort.c" .intel_syntax noprefix .text .globl
sort .type sort, @function
sort: .LFB0:
.cfi_startproc
push rbp
.cfi_def_cfa_offset 16
.cfi_offset 6, -16
mov rbp, rsp
.cfi_def_cfa_register 6
mov QWORD PTR [rbp-24], rdi
mov DWORD PTR [rbp-28], esi
mov DWORD PTR [rbp-12], 0
jmp .L2
.L6:
mov DWORD PTR [rbp-8], 0
jmp .L3
.L5:
mov eax, DWORD PTR [rbp-8]
cdqe
sal rax, 2
add rax, QWORD PTR [rbp-24]
mov edx, DWORD PTR [rax]
mov eax, DWORD PTR [rbp-8]
cdqe
add rax, 1
sal rax, 2
add rax, QWORD PTR [rbp-24]
mov eax, DWORD PTR [rax]
cmp edx, eax
jle .L4
mov eax, DWORD PTR [rbp-8]
cdqe
sal rax, 2
add rax, QWORD PTR [rbp-24]
mov eax, DWORD PTR [rax]
mov DWORD PTR [rbp-4], eax
mov eax, DWORD PTR [rbp-8]
cdqe
sal rax, 2
add rax, QWORD PTR [rbp-24]
mov edx, DWORD PTR [rbp-8]
movsx rdx, edx
add rdx, 1
sal rdx, 2
add rdx, QWORD PTR [rbp-24]
mov edx, DWORD PTR [rdx]
mov DWORD PTR [rax], edx
mov eax, DWORD PTR [rbp-8]
cdqe
add rax, 1
sal rax, 2
add rax, QWORD PTR [rbp-24]
mov edx, DWORD PTR [rbp-4]
mov DWORD PTR [rax], edx
.L4:
add DWORD PTR [rbp-8], 1
.L3:
mov eax, DWORD PTR [rbp-28]
sub eax, 1
sub eax, DWORD PTR [rbp-12]
cmp eax, DWORD PTR [rbp-8]
jg .L5
add DWORD PTR [rbp-12], 1
.L2:
mov eax, DWORD PTR [rbp-28]
sub eax, 1
cmp eax, DWORD PTR [rbp-12]
jg .L6
pop rbp
.cfi_def_cfa 7, 8
ret
.cfi_endproc
.LFE0:
.size sort, .-sort
.ident "GCC: (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3"
.section .note.GNU-stack,"",@progbits
Just remove PTR and all nonsensical .somethings.
This assembles just fine:
; file: gas-nasm-sort.asm
bits 64
sort:
push rbp
mov rbp, rsp
mov QWORD [rbp-24], rdi
mov DWORD [rbp-28], esi
mov DWORD [rbp-12], 0
jmp .L2
.L6:
mov DWORD [rbp-8], 0
jmp .L3
.L5:
mov eax, DWORD [rbp-8]
cdqe
sal rax, 2
add rax, QWORD [rbp-24]
mov edx, DWORD [rax]
mov eax, DWORD [rbp-8]
cdqe
add rax, 1
sal rax, 2
add rax, QWORD [rbp-24]
mov eax, DWORD [rax]
cmp edx, eax
jle .L4
mov eax, DWORD [rbp-8]
cdqe
sal rax, 2
add rax, QWORD [rbp-24]
mov eax, DWORD [rax]
mov DWORD [rbp-4], eax
mov eax, DWORD [rbp-8]
cdqe
sal rax, 2
add rax, QWORD [rbp-24]
mov edx, DWORD [rbp-8]
movsx rdx, edx
add rdx, 1
sal rdx, 2
add rdx, QWORD [rbp-24]
mov edx, DWORD [rdx]
mov DWORD [rax], edx
mov eax, DWORD [rbp-8]
cdqe
add rax, 1
sal rax, 2
add rax, QWORD [rbp-24]
mov edx, DWORD [rbp-4]
mov DWORD [rax], edx
.L4:
add DWORD [rbp-8], 1
.L3:
mov eax, DWORD [rbp-28]
sub eax, 1
sub eax, DWORD [rbp-12]
cmp eax, DWORD [rbp-8]
jg .L5
add DWORD [rbp-12], 1
.L2:
mov eax, DWORD [rbp-28]
sub eax, 1
cmp eax, DWORD [rbp-12]
jg .L6
pop rbp
ret
Command:
nasm gas-nasm-sort.asm -f bin -o gas-nasm-sort.bin
But again, there's NASM documentation. Read it. In particular these sections:
2.2.2 NASM Requires Square Brackets For Memory References
2.2.3 NASM Doesn't Store Variable Types
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