format ELF
include "public_stdcall.inc"
section '.text' executable
public_stdcall _msys_read_file,20
;arg1 - file name
;arg2 - file offset
;arg3 - size to read
;arg4 - data
;arg5 - file size
push ebp
mov ebp,esp
xor eax,eax
mov [file_struct.operation],eax
mov eax,[ebp+12]
mov [file_struct.offset],eax
mov eax,[ebp+16]
mov [file_struct.size],eax
mov eax,[ebp+20]
mov [file_struct.data],eax
mov [file_struct.temp_buffer],temp_buffer
mov edx,[ebp+8]
call copy_file_name
push ebx
mov ebx,file_struct
mov eax,58
int 0x40
mov ecx,[ebp+24]
test ecx,ecx
jz .no_file_size
mov [ecx],ebx
.no_file_size:
pop ebx
pop ebp
ret 20
copy_file_name:
push esi edi
cld
mov edi,edx
xor eax,eax
xor ecx,ecx
dec ecx
repnz scasb
not ecx
mov edi,file_struct.path
mov esi,edx
rep movsb
pop edi esi
ret
public_stdcall _msys_write_file,12
;arg1 - file name
;arg2 - size
;arg3 - data
push ebp
mov ebp,esp
xor eax,eax
mov [file_struct.offset],eax
inc eax
mov [file_struct.operation],eax
mov eax,[ebp+12]
mov [file_struct.size],eax
mov eax,[ebp+16]
mov [file_struct.data],eax
mov [file_struct.temp_buffer],temp_buffer
mov edx,[ebp+8]
call copy_file_name
push ebx
mov eax,58
mov ebx,file_struct
int 0x40
pop ebx
pop ebp
ret 12
public_stdcall _msys_run_program,8
;arg1 - program name
;arg2 - parameters
push ebp
mov ebp,esp
mov [file_struct.operation],16
xor eax,eax
mov [file_struct.offset],eax
mov [file_struct.data],eax
mov eax,[ebp+12]
mov [file_struct.param],eax
mov [file_struct.temp_buffer],temp_buffer;
mov edx,[ebp+8]
call copy_file_name
push ebx
mov eax,58
mov ebx,file_struct
int 0x40
pop ebx
pop ebp
ret 8
section '.bss' writeable
file_struct:
.operation rd 1
.offset rd 1
.param:
.size rd 1
.data rd 1
.temp_buffer rd 1
.path rb 1024
temp_buffer rb 4096