107 lines
1.6 KiB
NASM
107 lines
1.6 KiB
NASM
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TITLE LDSTACK - stack walking procedure
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.xlist
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include kernel.inc
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include newexe.inc
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include tdb.inc
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include eems.inc
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.list
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;externFP GlobalHandle
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;externFP FarLoadSegment
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;externW pStackTop
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;externW pStackBot
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DataBegin
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;externB Kernel_flags
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;externW segSwapArea
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;externW oOldSP
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;externW hOldSS
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;externW fEEMS
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;externW pGlobalHeap
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;externW curTDB
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;externW headTDB
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DataEnd
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sBegin CODE
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assumes CS,CODE
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;externNP MyLock
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;externNP LoadSegment
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sEnd CODE
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sBegin MISCCODE
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assumes cs, MISCCODE
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assumes ds, nothing
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assumes es, nothing
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jmpbuf struc
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jb_ret DD ?
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jb_sp DW ?
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jb_bp DW ?
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jb_si DW ?
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jb_di DW ?
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jb_hds DW ?
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jb_ip DW ?
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jb_hss DW ?
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jmpbuf ends
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savedSI = -4
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savedDI = -6
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cProcVDO Catch,<PUBLIC,FAR>,<ds,si,di>
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parmD lpJmpBuf
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cBegin
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push [bp].savedCS
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push [bp].savedIP
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push [bp].savedBP
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les bx,lpJmpBuf
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mov es:[bx].jb_hss,ss
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mov es:[bx].jb_hds,ds
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mov es:[bx].jb_di,di
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mov es:[bx].jb_si,si
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pop es:[bx].jb_bp
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pop word ptr es:[bx].jb_ret[0]
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pop word ptr es:[bx].jb_ret[2]
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mov es:[bx].jb_sp,sp
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xor ax,ax
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CatchRet:
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cEnd
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cProcVDO Throw,<PUBLIC,FAR>
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; parmD lpJmpBuf
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; parmW AXvalue
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cBegin nogen
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mov bx,sp
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mov di,ss:[bx+4]
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lds si,ss:[bx+6]
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mov ss,ds:[si].jb_hss
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mov sp,ds:[si].jb_sp
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mov bp,sp
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add bp,-savedDI
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push ds:[si].jb_bp
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pop ss:[bp].savedBP
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push ds:[si].jb_si
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pop ss:[bp].savedSI
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push ds:[si].jb_di
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pop ss:[bp].savedDI
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push ds:[si].jb_hds
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pop ss:[bp].savedDS
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mov ax,word ptr ds:[si].jb_ret[2]
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mov ss:[bp].savedCS,ax
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mov ax,word ptr ds:[si].jb_ret[0]
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mov ss:[bp].savedIP,ax
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mov ax,di
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jmp CatchRet
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cEnd nogen
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sEnd MISCCODE
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end
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