431 lines
8.4 KiB
PHP
431 lines
8.4 KiB
PHP
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pushcontext listing
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.nolist
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;
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; (C) Copyright Microsoft Corporation 1992, 1995
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; This file is used to create the same sets of prologue and epilogue
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; sequences which the Microsoft C 6.00 compiler will produce. This
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; file would be used for writing windows programs and to provide
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; such features as stack checking in the assembler portions of
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; a C based project.
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; The following global variables will affect the prolog/epilog
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; sequences produced
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;
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; PROFILE - If 1 then __penter calls will be inserted in all prologs
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; ?WP_DEBUG - If 1 then prolog/epilog sequences will be forced
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; ?WP_CHECKSTACK - If 1 then a check stack will be forced on all
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; procedures
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; ?WP_INCBP - If 1 then the inc bp sequence will be generated on
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; all far procedures
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; ?WP_LOADDS - If 1 then the load ds sequence will be generated on
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; all far procedures
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;
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ifndef ?WP_DEBUG
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?WP_DEBUG = 0
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endif
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ifndef ?WP_CHECKSTACK
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?WP_CHECKSTACK = 0
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endif
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ifndef ?WP_INCBP
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?WP_INCBP = 0
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endif
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ifndef ?WP_LOADDS
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?WP_LOADDS = 0
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endif
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ifndef PROFILE
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PROFILE = 0
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endif
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ifndef ?WP_REGSAVE
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?WP_REGSAVE = 0
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endif
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;
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; Complain if we are in a segment as this will affect how the
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; externdefs are done and therefore the fixups and code
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; created on the checkstack calls
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;
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% ifnb <@CurSeg>
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echo Include should not be contained in a segment
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endif
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externdef C _aNchkstk:near ; Extern the symbols
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externdef C _aFchkstk:far ; for later reference
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externdef C _penter:near
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;
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; This macro will produce the same output as will the
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; C6 compiler for the given switches.
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;
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; The following may be placed in the MacroArgs field of the
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; proc defintion:
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;
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; CHECKSTACK
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; NOCHECKSTACK
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; LOADDS
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; NOLOADDS
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; FORCEFRAME
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; INCBP
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; NOINCBP
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; PROFILE
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option prologue:cPrologue
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cPrologue macro szProcName, flags, cbParams, cbLocals, rgRegs, rgUserParams
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LOCAL ?doPrologue
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LOCAL ?loadds
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LOCAL ?checkstack
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LOCAL ?incbp
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LOCAL ?cbLocals
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LOCAL ?doProfile
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LOCAL ?doRegSave
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; pushcontext listing
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; .nolistmacro
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; .listmacroall
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?doPrologue = 0
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?loadds = 0
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?checkstack = 0
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?incbp = 0
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?cbLocals = cbLocals
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?doProfile = 0
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?doRegSave = 0
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;; Set the defaults based on the global values specified
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;;
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if ?WP_DEBUG NE 0 ;; Force frames by default
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?doPrologue = 1
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endif
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if ?WP_CHECKSTACK NE 0 ;; Force checkstack by default
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?checkstack = 1
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endif
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if ?WP_INCBP NE 0 ;; Force incbp by default if far
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if flags AND 020h
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?incbp = 1
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endif
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endif
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if ?WP_LOADDS NE 0 ;; Force loadds by default if far
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if flags AND 020h
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?loadds = 1
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endif
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endif
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if PROFILE NE 0 ;; profiling wanted
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?doProfile = 1 ;; turn on profiling
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endif
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if ?WP_REGSAVE NE 0
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?doRegSave = 1
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endif
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;;
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;; Get all of the user parameters parsed
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;;
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ifnb <rgUserParams> ;; Parse user params if exsisting
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for p,<rgUserParams> ;; For every user param
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ifidni <p>, <CHECKSTACK> ;; Is it checkstack?
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?checkstack = 1 ;; Yes -- do checkstack
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endif
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ifidni <p>, <NOCHECKSTACK> ;; Don't do checkstack?
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?checkstack = 0 ;; Yes -- clear checkstack
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endif
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ifidni <p>, <LOADDS> ;; Is it LoadDS
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?loadds = 1 ;; Yes -- do loadds sequence
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endif
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ifidni <p>, <NOLOADDS> ;; Don't do LoadDS?
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?loadds = 0 ;; Yes -- clear loadds flag
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endif
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ifidni <p>, <INCBP> ;; Is it IncBP
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if flags AND 020h ;; and far?
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?incbp = 1 ;; Yes -- do IncBP sequence
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endif
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endif
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ifidni <p>, <NOINCBP> ;; Is it NoIncBP
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?incbp = 0 ;; Yes -- Clear the incbp flag
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endif
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ifidni <p>, <FORCEFRAME> ;; Is it ForceFrame?
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?doPrologue = 1 ;; Yes -- force out a frame
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endif
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ifidni <p>, <PROFILE>
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?doProfile = 1
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endif
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ifidni <p>, <NOPROFILE>
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?doProfile = 0
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endif
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ifidni <p>, <REGSAVE>
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?doRegSave = 1
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endif
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ifidni <p>, <NOREGSAVE>
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?doRegSave = 0
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endif
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endm ;; End of user parameter parsing loop
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endif
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;; Turn off options that don't make sense in USE32 segment
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if @WordSize eq 4
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?checkstack = 0
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?loadds = 0
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?incbp = 0
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endif
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;; Frames are generated iff
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;; 1. cbLocals + cbParams != 0
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;; 2. FORCEFRAME is set
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;; 3. INCBP is set and proc is far
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;; 4. LOADDS is set
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;;
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;; Force a prolog?
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?doPrologue = ?doPrologue OR ?incbp OR ?loadds OR ?checkstack OR (?cbLocals NE 0) OR (cbParams NE 0)
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if ?doProfile EQ 1 ;; generate profiling call
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if ?doRegSave EQ 1
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pushad
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endif
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call _penter
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if ?doRegSave EQ 1
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popad
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endif
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endif
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if ?doPrologue EQ 0 ;; No prolog needed -- so get out of here
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; popcontext listing
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exitm<0>
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endif
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if ?loadds EQ 1 ;; Create the loadds code -- force in
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push ds ;; Put DS into AX -- we will place
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pop ax ;; back in DS later. This sequence
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nop ;; is altered by the OS if needed
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endif
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if ?incbp EQ 1 ;; Mark as a far procedure for stack
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inc bp ;; walking
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endif
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if @WordSize eq 4
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push ebp
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mov ebp, esp
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else
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push bp ;; Create the frame
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mov bp,sp
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endif
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if ?loadds EQ 1 ;; Load up DS with the value in AX
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push ds ;;
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mov ds,ax ;;
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?cbLocals = ?cbLocals + 2
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endif
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if ?checkstack EQ 1 ;; Now allocate space for locals
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mov ax,cbLocals ;; # of bytes of locals (unadjusted)
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% ifidni <@CurSeg>, <_TEXT>
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call _aNchkstk ;; Call run time routine to allocate
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else
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call _aFchkstk
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endif
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else ; ?checkstack NE 1
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if cbLocals NE 0
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if @WordSize eq 4
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sub esp, cbLocals
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else
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sub sp,cbLocals ;; make space on the stack for locals
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endif
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endif
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endif
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ifnb rgRegs ;; There are registers to be saved. do so
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for r,rgRegs
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push r
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endm
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endif
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; popcontext listing
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exitm <?cbLocals>
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endm
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;
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; This macro will produce the same output as will the
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; C6 compiler for the given switches.
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;
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; The following may be placed in the MacroArgs field of the
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; proc defintion:
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;
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; CHECKSTACK
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; NOCHECKSTACK
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; LOADDS
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; NOLOADDS
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; FORCEFRAME
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; INCBP
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; NOINCBP
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option epilogue:cEpilogue
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cEpilogue macro szProcName, flags, cbParams, cbLocals, rgRegs, rgUserParams
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LOCAL ?doPrologue
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LOCAL ?loadds
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LOCAL ?checkstack
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LOCAL ?incbp
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; pushcontext listing
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; .nolistmacro
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; .listmacroall
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?doPrologue = 0
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?loadds = 0
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?checkstack = 0
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?incbp = 0
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;; Turn off options that don't make sense in USE32 segment
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if @WordSize eq 4
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?checkstack = 0
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?loadds = 0
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?incbp = 0
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endif
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;; Set the defaults based on the global values specified
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;;
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if ?WP_DEBUG NE 0 ;; Force frames by default
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?doPrologue = 1
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endif
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if ?WP_CHECKSTACK NE 0 ;; Force checkstack by default
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?checkstack = 1
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endif
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if ?WP_INCBP NE 0 ;; Force incbp by default
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if flags AND 020h
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?incbp = 1
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endif
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endif
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if ?WP_LOADDS NE 0 ;; Force loadds by default
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if flags AND 020h
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?loadds = 1
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endif
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endif
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;;
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;; Get all of the user parameters parsed
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;;
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ifnb <rgUserParams> ;; Parse user params if exsisting
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for p,<rgUserParams> ;; For every user param
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ifidni <p>, <CHECKSTACK> ;; Is it checkstack?
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?checkstack = 1 ;; Yes -- do checkstack
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endif
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ifidni <p>, <NOCHECKSTACK> ;; Don't do checkstack?
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?checkstack = 0 ;; Yes -- clear checkstack
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endif
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ifidni <p>, <LOADDS> ;; Is it LoadDS
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?loadds = 1 ;; Yes -- do loadds sequence
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endif
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ifidni <p>, <NOLOADDS> ;; Don't do LoadDS?
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?loadds = 0 ;; Yes -- clear loadds flag
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endif
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ifidni <p>, <INCBP> ;; Is it IncBP
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if flags AND 020h
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?incbp = 1 ;; Yes -- do IncBP sequence
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endif
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endif
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ifidni <p>, <NOINCBP> ;; Is it NoIncBP
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?incbp = 0 ;; Yes -- Clear the incbp flag
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endif
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ifidni <p>, <FORCEFRAME> ;; Is it ForceFrame?
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?doPrologue = 1 ;; Yes -- force out a frame
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endif
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endm ;; End of user parameter parsing loop
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endif
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;; Turn off options that don't make sense in USE32 segment
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if @WordSize eq 4
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?checkstack = 0
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?loadds = 0
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?incbp = 0
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endif
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;; Frames are generated iff
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;; 1. cbLocals + cbParams != 0
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;; 2. FORCEFRAME is set
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;; 3. INCBP is set and proc is far
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;; 4. LOADDS is set
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;;
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;; Force a prolog?
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?doPrologue = ?doPrologue OR ?incbp OR ?loadds OR ?checkstack OR (cbLocals NE 0) OR (cbParams NE 0)
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if ?doPrologue EQ 0 ;; No epilog needed -- so get out of here
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ret
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exitm
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endif
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ifnb rgRegs ;; Pop off the registers -- they are in
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for r,rgRegs ;; inverse order from the prologue call
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pop r
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endm
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endif
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if ?loadds ;;
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dec bp
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dec bp
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mov sp,bp
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pop ds
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pop bp
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else
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if @WordSize eq 4
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mov esp, ebp
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pop ebp
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else
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mov sp,bp
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pop bp
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endif
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endif
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if ?incbp ;; Remove the increment of BP if necessary
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dec bp
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endif
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if flags AND 010h ;; Caller pops stack arguments
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ret
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else ;; Callee pops args
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if cbParams NE 0 ;; Put out the correct form of return
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ret cbParams
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else
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ret
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endif
|
||
|
|
endif
|
||
|
|
endm
|
||
|
|
|
||
|
|
popcontext listing
|
||
|
|
.listmacro
|