ssort.asm

unix环境下实现的cmm语言编译器

section .text
global main
main:
push ebx
push edx
push ecx
push esi
push edi
push ebp
mov ebp,esp
push 20000
push lineptr
call readlines
add esp, 8
mov edi, eax
cmp eax,0
jl near L2
push strcmp
mov esi, edi
sub esi, 1
push esi
push 0
push lineptr
call qsort
add esp, 16
push edi
push lineptr
call writelines
add esp, 8
mov eax,0
jmp L1
L2:
push L4
call puts
add esp, 4
mov eax,1
jmp L1
L1:
mov esp,ebp
pop ebp
pop edi
pop esi
pop ecx
pop edx
pop ebx
ret
global readlines
readlines:
push ebx
push edx
push ecx
push esi
push edi
push ebp
mov ebp,esp
sub esp, 1004
mov edi, 0
jmp L7
L6:
mov ebx, dword [ebp+32]
cmp edi,ebx
jl near L9
mov eax,-1
jmp L5
L9:
mov ebx, dword [ebp+-1004]
push ebx
call malloc
add esp, 4
mov esi, eax
mov ebx,0
cmp eax,ebx
jne near L11
mov eax,-1
jmp L5
L11:
mov ebx, dword [ebp+-1004]
sub ebx, 1
mov edx, ebp
add edx, -1000
add ebx, edx
mov byte  [ebx], 0
mov ebx, ebp
add ebx, -1000
push ebx
push esi
call strcpy
add esp, 8
mov ebx, 4
imul ebx, edi
mov edx, dword [ebp+28]
add ebx, edx
mov dword  [ebx], esi
mov ebx, edi
add ebx, 1
mov edi, ebx
L7:
push 1000
mov ebx, ebp
add ebx, -1000
push ebx
call getline
add esp, 8
mov dword  [ebp+-1004], eax
cmp eax,0
jg near L6
mov eax,edi
jmp L5
L5:
mov esp,ebp
pop ebp
pop edi
pop esi
pop ecx
pop edx
pop ebx
ret
global writelines
writelines:
push ebx
push edx
push ecx
push esi
push edi
push ebp
mov ebp,esp
mov edi, 0
jmp L15
L14:
mov esi, 4
imul esi, edi
mov ebx, dword [ebp+28]
add esi, ebx
mov esi, dword [esi]
push esi
push L17
call printf
add esp, 8
mov esi, edi
add esi, 1
mov edi, esi
L15:
mov esi, dword [ebp+32]
cmp edi,esi
jl near L14
L13:
mov esp,ebp
pop ebp
pop edi
pop esi
pop ecx
pop edx
pop ebx
ret
extern getline
section .data
global lineptr
align 4
lineptr:
resb 20000
section .text
extern qsort
section .data
section .text
extern strcmp
section .data
section .text
extern malloc
section .data
section .text
extern strcpy
section .data
section .text
extern printf
section .data
section .text
extern puts
section .data
section .data
align 1
L17:
db 37
db 115
db 10
db 0
align 1
L4:
db 101
db 114
db 114
db 111
db 114
db 58
db 32
db 105
db 110
db 112
db 117
db 116
db 32
db 116
db 111
db 111
db 32
db 98
db 105
db 103
db 32
db 116
db 111
db 32
db 115
db 111
db 114
db 116
db 10
db 0