416 lines
9.6 KiB
PHP
416 lines
9.6 KiB
PHP
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include 'sort.inc'
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; compare proc for sorter
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Compare:
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cmpsd
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jnz @F
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cmp esi,edi
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@@:
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ret
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; compare proc for sorter 2
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Compare2:
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cmpsd
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@@:
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cmpsb
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jnz @F
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cmp byte [esi-1],0
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jnz @B
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cmp esi,edi
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@@:
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ret
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FreeSymbols:
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mov ecx,[Symbols]
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jecxz @F
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mcall 68,13
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and [Symbols],0
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and [NumSymbols],0
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@@:
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ret
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;-----------------------------------------------------------------------------
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; Load symbols event
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OnLoadSymbols.FileErr:
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test ebp,ebp
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jz @f
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mcall 68,13,edi
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ret
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@@:
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push eax
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mcall 68,13,edi
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mov esi,aCannotLoadFile
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call PutMessageNoDraw
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pop eax
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cmp eax,0x20
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jae .Unk
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mov esi,[LoadErrMsgs+eax*4]
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test esi,esi
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jnz PutMessage
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.Unk:
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mov esi,UnkErrMsg2
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jmp PutMessage
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OnLoadSymbols:
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xor ebp,ebp
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; load input file
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mov esi,[CurArg]
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call FreeSymbols
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.Silent:
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; esi = ptr to symbols filename
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xor edi,edi
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cmp [NumSymbols],edi ; Any previously loaded symbols?
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je .LoadFile
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call FreeSymbols ; Yep, free them
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.LoadFile:
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mov ebx,FN70AttrBlock ; Get file attributes
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mov [ebx+21],esi
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mcall 70
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test eax,eax
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jnz .FileErr
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cmp dword [FileAttr+36],edi ; Is upper dword of filesize larger then 0?
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jnz .MemErr
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mov ecx,dword [FileAttr+32] ; Lower dword of filesize
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mcall 68,12 ; allocate the memory
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test eax,eax
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jz .MemErr
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mov edi,eax
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mov ebx,FN70ReadBlock
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mov [ebx+12],ecx
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mov [ebx+16],edi
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mov [ebx+21],esi
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mcall 70 ; Read the file into the allocated buffer
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test eax,eax
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jnz .FileErr
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; calculate memory requirements to load debug symbols
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lea edx,[ecx+edi-1] ; edx = EOF-1
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mov esi,edi
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xor ecx,ecx
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mov [SymbolSection],1 ;;;;;
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.CalcLoop:
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cmp esi,edx
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jae .CalcDone
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cmp byte [esi],' ' ; skip spaces at the beginning of a line
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jne .NotSpace
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inc esi
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jmp .CalcLoop
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.NotSpace:
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cmp byte [esi],'.'
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jne .NotSection
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inc esi
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mov [SymbolSection],0
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cmp dword [esi],'text'
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je .SectionOK
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cmp dword [esi],'data'
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je .SectionOK
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cmp dword [esi],'bss '
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jne .SkipLine
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.SectionOK:
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inc [SymbolSection]
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jmp .SkipLine
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.NotSection:
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cmp [SymbolSection],0
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je .SkipLine
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cmp word [esi],'0x'
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jne .SkipLine
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inc esi
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inc esi
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@@:
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cmp esi,edx
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jae .CalcDone
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lodsb
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or al,20h
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sub al,'0'
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cmp al,9
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jbe @B
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sub al,'a'-'0'-10
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cmp al,15
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jbe @B
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dec esi
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@@:
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cmp esi,edx
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ja .CalcDone
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lodsb
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cmp al,20h
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je @B
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jb .CalcLoop
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cmp al,9
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jz @B
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add ecx,12+1
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inc [NumSymbols]
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@@:
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inc ecx
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cmp esi,edx
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ja .CalcDone
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lodsb
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cmp al,0xD
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jz .CalcLoop
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cmp al,0xA
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jz .CalcLoop
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jmp @B
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.SkipLine:
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cmp esi,edx
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jae .CalcDone
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lodsb
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cmp al,0xD
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jz .CalcLoop
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cmp al,0xA
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jz .CalcLoop
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jmp .SkipLine
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.CalcDone:
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; Allocate memory to place the debug symbols in
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mcall 68,12
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test eax,eax
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jnz .MemOK
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inc ebx
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mov ecx,edi
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mov al,68
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mcall
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.MemErr:
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mov esi,aNoMemory
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jmp PutMessage
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.MemOK:
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mov [Symbols],eax
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mov ebx,eax
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push edi
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mov esi,edi
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mov edi,[NumSymbols]
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lea ebp,[eax+edi*4]
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lea edi,[eax+edi*8]
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; Actual loading of the debug symbols
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; esi->input, edx->EOF, ebx->ptrs, edi->names
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mov [SymbolSection],1 ;;;;;
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.ReadLoop:
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cmp esi,edx
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jae .ReadDone
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cmp byte [esi],' '
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jne .NotSpace2
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inc esi
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jmp .ReadLoop
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.NotSpace2:
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cmp byte [esi],'.'
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jne .NotSection2
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inc esi
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mov [SymbolSection],0
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cmp dword [esi],'text'
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je .SectionOK2
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cmp dword [esi],'data'
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je .SectionOK2
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cmp dword [esi],'bss '
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jne .ReadLine
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.SectionOK2:
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inc [SymbolSection]
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jmp .ReadLine
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.NotSection2:
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cmp [SymbolSection],0
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je .ReadLine
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cmp word [esi],'0x'
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jnz .ReadLine
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inc esi
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inc esi
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xor eax,eax
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xor ecx,ecx
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@@:
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shl ecx,4
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add ecx,eax
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cmp esi,edx
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jae .ReadDone
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lodsb
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or al,20h
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sub al,'0'
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cmp al,9
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jbe @B
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sub al,'a'-'0'-10
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cmp al,15
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jbe @B
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dec esi
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@@:
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cmp esi,edx
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ja .ReadDone
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lodsb
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cmp al,20h
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jz @B
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jb .ReadLoop
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cmp al,9
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jz @B
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mov dword [ebx],edi
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add ebx,4
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mov dword [ebp],edi
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add ebp,4
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mov dword [edi],ecx
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add edi,4
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stosb
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@@:
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xor eax,eax
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stosb
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cmp esi,edx
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ja .ReadDone
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lodsb
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cmp al,0xD
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jz .ReadLoop
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cmp al,0xA
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jz .ReadLoop
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mov byte [edi-1],al
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jmp @B
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.ReadLine:
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cmp esi,edx
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jae .ReadDone
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lodsb
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cmp al,0xD
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jz .ReadLoop
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cmp al,0xA
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jz .ReadLoop
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jmp .ReadLine
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.ReadDone:
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pop ecx
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mcall 68,13
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mov ecx,[NumSymbols]
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mov edx,[Symbols]
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mov ebx,Compare
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call Sort
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mov ecx,[NumSymbols]
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lea edx,[edx+ecx*4]
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mov ebx,Compare2
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call Sort
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mov esi,aSymbolsLoaded
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call PutMessage
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jmp DrawMessages;DrawDisAsm
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;
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; in: EAX = address
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; out: ESI, CF
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FindSymbol:
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cmp [NumSymbols],0
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jnz @F
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.Ret0:
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xor esi,esi
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stc
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ret
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@@:
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push ebx ecx edx
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xor edx,edx
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mov esi,[Symbols]
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mov ecx,[NumSymbols]
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mov ebx,[esi]
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cmp [ebx],eax
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jz .DoneZ
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jb @F
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pop edx ecx ebx
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jmp .Ret0
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@@:
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; invariant: symbols_addr[edx] < eax < symbols_addr[ecx]
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; TODO: add meaningful label names
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.0:
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push edx
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.1:
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add edx,ecx
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sar edx,1
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cmp edx,[esp]
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jz .Done2
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mov ebx,[esi+edx*4]
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cmp [ebx],eax
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jz .Done
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ja .2
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mov [esp],edx
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jmp .1
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.2:
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mov ecx,edx
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pop edx
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jmp .0
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.DoneCont:
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dec edx
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.Done:
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test edx,edx
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jz @F
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mov ebx,[esi+edx*4-4]
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cmp [ebx],eax
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jz .DoneCont
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@@:
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pop ecx
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.DoneZ:
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mov esi,[esi+edx*4]
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add esi,4
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pop edx ecx ebx
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clc
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ret
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.Done2:
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lea esi,[esi+edx*4]
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pop ecx edx ecx ebx
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stc
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ret
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;-----------------------------------------------------------------------------
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; in: esi->name
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; out: if found: CF = 0, EAX = value
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; otherwise CF = 1
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FindSymbolName:
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cmp [NumSymbols],0
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jnz @F
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.StcRet:
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stc
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ret
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@@:
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push ebx ecx edx edi
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push -1
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pop edx
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mov ebx,[Symbols]
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mov ecx,[NumSymbols]
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lea ebx,[ebx+ecx*4]
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; invariant: symbols_name[edx] < name < symbols_name[ecx]
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.0:
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push edx
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.1:
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add edx,ecx
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sar edx,1
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cmp edx,[esp]
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jz .Done2
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call .Cmp
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jz .Done
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jb .2
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mov [esp],edx
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jmp .1
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.2:
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mov ecx,edx
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pop edx
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jmp .0
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.Done:
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pop ecx
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.DoneZ:
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mov eax,[ebx+edx*4]
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mov eax,[eax]
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pop edi edx ecx ebx
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clc
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ret
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.Done2:
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pop edx edi edx ecx ebx
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stc
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ret
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.Cmp:
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mov edi,[ebx+edx*4]
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push esi
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add edi,4
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@@:
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cmpsb
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jnz @F
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cmp byte [esi-1],0
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jnz @B
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@@:
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pop esi
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ret
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