158 lines
2.9 KiB
PHP
158 lines
2.9 KiB
PHP
;-----------------------------------------------------------------------------
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proc mem.Alloc size ;/////////////////////////////////////////////////////////
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;-----------------------------------------------------------------------------
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push ebx ecx
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mov eax,[size]
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lea ecx,[eax+4+4095]
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and ecx,not 4095
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mcall 68,12
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add ecx,-4
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mov [eax],ecx
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add eax,4
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pop ecx ebx
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ret
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endp
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;-----------------------------------------------------------------------------
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proc mem.ReAlloc mptr,size;///////////////////////////////////////////////////
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;-----------------------------------------------------------------------------
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push ebx ecx esi edi eax
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mov eax,[mptr]
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mov ebx,[size]
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or eax,eax
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jz @f
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lea ecx,[ebx+4+4095]
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and ecx,not 4095
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add ecx,-4
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cmp ecx,[eax-4]
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je .exit
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@@: mov eax,ebx
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call mem.Alloc
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xchg eax,[esp]
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or eax,eax
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jz .exit
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mov esi,eax
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xchg eax,[esp]
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mov edi,eax
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mov ecx,[esi-4]
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cmp ecx,[edi-4]
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jbe @f
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mov ecx,[edi-4]
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@@: add ecx,3
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shr ecx,2
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cld
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rep movsd
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xchg eax,[esp]
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call mem.Free
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.exit:
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pop eax edi esi ecx ebx
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ret
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endp
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;-----------------------------------------------------------------------------
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proc mem.Free mptr ;//////////////////////////////////////////////////////////
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;-----------------------------------------------------------------------------
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mov eax,[mptr]
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or eax,eax
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jz @f
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push ebx ecx
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lea ecx,[eax-4]
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mcall 68,13
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pop ecx ebx
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@@: ret
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endp
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proc dll.Load, import_table:dword
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mov esi,[import_table]
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.next_lib: mov edx,[esi]
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or edx,edx
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jz .exit
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push esi
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mov esi,[esi+4]
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mov edi,s_libdir.fname
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@@: lodsb
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stosb
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or al,al
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jnz @b
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mcall 68,19,s_libdir
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or eax,eax
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jz .fail
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stdcall dll.Link,eax,edx
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stdcall dll.Init,[eax+4]
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pop esi
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add esi,8
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jmp .next_lib
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.exit: xor eax,eax
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ret
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.fail: add esp,4
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xor eax,eax
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inc eax
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ret
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endp
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proc dll.Link, exp:dword,imp:dword
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push eax
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mov esi,[imp]
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test esi,esi
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jz .done
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.next: lodsd
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test eax,eax
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jz .done
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stdcall dll.GetProcAddress,[exp],eax
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or eax,eax
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jz @f
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mov [esi-4],eax
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jmp .next
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@@: mov dword[esp],0
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.done: pop eax
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ret
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endp
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proc dll.Init, dllentry:dword
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pushad
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mov eax,mem.Alloc
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mov ebx,mem.Free
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mov ecx,mem.ReAlloc
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mov edx,dll.Load
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stdcall [dllentry]
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popad
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ret
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endp
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proc dll.GetProcAddress, exp:dword,sz_name:dword
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mov edx,[exp]
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xor eax,eax
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.next: or edx,edx
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jz .end
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cmp dword[edx],0
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jz .end
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stdcall strcmp,[edx],[sz_name]
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test eax,eax
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jz .ok
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add edx,8
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jmp .next
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.ok: mov eax,[edx+4]
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.end: ret
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endp
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proc strcmp, str1:dword,str2:dword
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push esi edi
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mov esi,[str1]
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mov edi,[str2]
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xor eax,eax
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@@: lodsb
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scasb
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jne .fail
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or al,al
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jnz @b
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jmp .ok
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.fail: or eax,-1
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.ok: pop edi esi
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ret
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endp
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s_libdir:
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db '/sys/lib/'
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.fname rb 32
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