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comment $
cmacros - assembly macros for interfacing to hhls
(C)Copyright Microsoft Corp. 1984-1988
$
;; Revision History
;;
;; 1.00 05/03/84 Initial Release
;;
;; 1.01 05/06/84 Greg Whitten
;; Added defgrp and changed cMerge to Microsoft C
;; Added copyright message and changed to 1.01
;; Changes should have no affect on working programs
;;
;; 1.02 07/10/84 Steve Wood
;; Added labelx macros
;;
;; 1.03 07/14/84 Greg Whitten
;; Added defines for ?pu, ?adj, ?lblpu
;; (removes undefined errors)
;; Changes should have no affect on working programs
;;
;; 1.04 07/18/84 Greg Whitten
;; Added local control from PL/M or C conventions
;; except for cCall macro
;;
;; 1.05 08/06/84 Steve Wood
;; Made ?PLM and ?WIN be the defaults
;;
;; 1.06 01/02/85 Steve Wood
;; Changed createSeg and defgrp to automatically
;; define the ln_assumes macro and the lnoffset
;; and lnbase equates for each logical segment
;; name.
;;
;; 1.07 02/19/85 Walt Moore
;; Added farptr macro for defining a far pointer
;; to be used in a cCall. Folded regptr into
;; farptr. Space compaction in macros. Changed
;; ?pp to be smaller. Moved ?ia out of ?al1 into
;; ?aloc. Merged cProc and ?pd into one macro.
;; Changed some %outs to use the error macro so
;; an error would be generated. Added makeframe
;; and parmR to cProc. Changed error to also put
;; the error message in the listing.
;; Deleted the smashes macro.
;;
;; 1.08 03/18/85 Steve Wood
;; Added NODATA support.
;;
;; 1.09 03/27/85 Steve Wood
;; Added ?definitions
;;
;; 2.00 04/01/85 Steve Wood
;; April fools
;;
;; 2.01 06/17/85 Steve Wood
;; Changed NODATA to always generate POP DS
;; for return address patching
;;
;; 2.02 02/11/86 Steve Wood
;; Added ATOMIC keyword to cProc macro
;; Changed far epilog to use LEA SP,BP-2
;; Changed error macro to ??error to avoid
;; conflict
;;
;; 2.03 03/06/86 Steve Wood
;; Fixed bug with ATOMIC and locals in far proc
;; Added DOS5 switch to disable INC/DEC BP
;; instructions in special far prologs/epilogs
;;
;; 2.04 08/07/86 Scott Randell
;; Fixed bug with ATOMIC and ?TF
;; (was doing unnecessary MOV SP,BP)
;; Added pcode profile ?PROFILE
;;
;; 2.05 08/12/86 Walt Moore
;; Changed _TEXT alignment to word.
;; Added/corrected some comments.
;; Removed redundant init of ?pc in cProc
;; Made ATOMIC require NODATA
;; Moved definition of non-underscored 'C' label
;; from the cProc to the cBegin macro
;; Minor clean-up of code
;;
;; 2.06 09/11/86 Walt Moore
;; Added private stack checking
;; Put local control for PL/M or C into cCall
;;
;;
;; 2.07 09/19/86 Steve Wood
;; Added ?SMALL, ?MEDIUM, etc. symbols
;; Added forceframe keyword to cProc macro.
;; Interpret ?TF for all epilogs.
;;
;; 3.xx.a 02/26/87 Massive rework. Documentation coming.
;;
;; 10/15/90 Earle Horton in Windows Development
;; reworked to allow saving 386 extended
;; registers in mpush and mpop macros.
;;
;;
;; Assembly macros for interfacing to C
;;
;; User setable conditional assembly flags used within the cmacros
;;
;; Memory model flags. Set only one of the following. memS is the
;; default. The symbols with ? are for defining from the command line
;; and the memx symbols are numeric symbols that can be set in your source
;; file prior to including this file.
;;
;; ?SMALL memS - small model
;; ?MEDIUM memM - medium model
;; ?LARGE memL - large model
;; ?COMPACT memC - compact model
;; ?HUGE memH - huge model
;;
;; ?DF Define flag. If this flag is 0, then defines default segment
;; and group definitions based on the compiler flag. If this
;; flag is 1, then does not define any segments or groups.
;;
;; ?TF Tight flag. If this flag is 0, then use longer epilog
;; sequence that safely cleans up a stack frame. If this flag is
;; 1, then use more efficient epilog that assumes the stack is
;; valid (SP)
;;
;; ?WIN Windows flag. Enables generation of special prolog/epilog
;; for far procedures. Default value is 1 (Windows).
;;
;; DOS5 If defined, then special far prolog/epilog seqeuences will not
;; include the INC/DEC BP instructions.
;;
;; ?PLM Calling convention flag. If this flag is 0, then the
;; calling convention used is that of C. If this flag
;; is 1, then the PL/M calling convention is used.
;; The default value is 1. The PL/M calling convention
;; is used by pascal, fortran, basic, and cobol.
;;
;; In the C calling convention, arguments are passed
;; in reverse order; arg0 is the last pushed, argn is the
;; first pushed. also, it is the callers responsibility
;; to remove the arguments from the stack upon a return
;; from a call.
;;
;; In the PL/M calling comvention, arguments are passed
;; as encountered; arg0 is the first pushed, argn is the
;; last pushed. also, it is the called procedure's
;; responsibility to remove parameters from the stack
;; before returning (using the RET n instruction)
;;
;; ?NODATA If defined, then no data segment or DGROUP is defined and
;; the special prolog/epilog sequences will not contain the
;; code needed to setup DS.
;;
;; ?CHKSTK If defined, then prolog sequences for cProcs with local
;; parameters will call the CHKSTK procedure to allocate
;; the stack space.
;;
;; ?CHKSTKPROC If defined, then this macro will be invoked to
;; perform the stack checking, otherwise the
;; standard stack checking procedure will be
;; performed. ?CHKSTKPROC must be declared
;; before the cmacros are included in the source
;; else the standard chkstk routine will be declared
;; as an external symbol.
;;
;; On entry to the user's stack checking procedure,
;; the frame has been setup except for allocating
;; local variable space and saving autosave registers.
;;
;; The user supplied macro is passed as an argument
;; the number of byte of stack space requested.
;;
;; ?PROFILE If defined then all far cBegin entries will have StartNMeas,
;; and all cEnd will have StopNMeas calls, StartNMeas and
;; StopNMeas will be defined as externfp
;;
;; ?NOPARMR If defined, then the "parmR" macro will not be defined.
;;
;; ?NOGLOBAL If defined, then the "globalx" macros will not be defined.
;;
;; ?NOSTATIC If defined, then the "staticx" macros will not be defined.
;;
;; ?NOEXTERN If defined, then the "externx" macros will not be defined.
;;
;; ?NOLABEL If defined, then the "labelx" macros will not be defined.
;;
;; ?NODEF If defined, then the "defx" macros will not be defined.
;;
;; ?NOPTR If defined, then "farptr & regptr" will not be defined.
;;
;; ?QUIET If defined, then only error messages will be issued to
;; the console. If undefined, then certain cmacro text will
;; be generated to the console.
.xcref ;;Get rid of a lot of symbols
; ??_out - output given message to the console unless ?QUIET has
; been specified.
;
; usage:
; ??_out <t>
;
; where:
; <t> is the message to output
.xcref ??_out
??_out macro t
ifndef ?QUIET
%out t
endif
endm
; outif - output msg if name is non-zero. if name is undefined,
; set name = 0, else set name to the default value.
;
; usage:
; outif name,defval,onmsg,offmsg
; where:
; name name of symbol
; defval default value to give symbol if not defined
; if blank, then 0 will be used
; onmsg text to display if symbol is non-zero
; offmsg test to be displayed if symbol is zero
outif macro name,defval,onmsg,offmsg
ifndef name
ifb <defval>
name=0
else
name=defval
endif
endif
if name
name=1
ifnb <onmsg>
??_out <! onmsg>
endif
else
ifnb <offmsg>
??_out <! offmsg>
endif
endif
endm
; ??error - output msg and generate an assembly time error
;
; usage:
; ??error <t>
; where:
; t is the text to be output
.xcref ??error
??error macro msg
e r r o r ----- msg ;;to console
.err ;;for good measure, force this also
endm
.xcref ASMpass
.xcref memS,memM,memL,memC,memH,memMOD,sizec,sized
if1 ;;Only on pass 1
ASMpass=1
ifdef ?SMALL ;;inform user what is going on
memS=1
endif
ifdef ?MEDIUM
memM=1
endif
ifdef ?COMPACT
memC=1
endif
ifdef ?LARGE
memL=1
endif
ifdef ?HUGE
memH=1
endif
??_out <cMacros Version 5.20 - Copyright (c) Microsoft Corp. 1984-1988>
outif memS,0,<Small model>
outif memM,0,<Medium model>
outif memL,0,<Large model>
outif memC,0,<Compact model>
outif memH,0,<Huge model>
memMOD= memS + memM + memL + memC + memH
if memMOD ne 1
if memMOD eq 0
memS = 1 ; assume small model
else
??error <more than 1 memory model selected>
endif
endif
sizec= memM + memL + memH ; large code
sized= memL + memC + (memH*2) ; large data (2 if huge)
outif ?DF,0,<No segments or groups will be defined>
outif ?TF,0,<Epilog sequences assume valid SP>
outif ?WIN,1,<Windows support>
if ?WIN eq 1
outif ?PLM,1,<>
else
outif ?PLM,1,<PL/M calling convention>
endif
ifndef ?NODATA
?nodata1=0
else
?nodata1=1
??_out <! NODATA module>
endif
ifndef ?CHKSTK
?chkstk1=0
else
?chkstk1=1
ifdef ?CHKSTKPROC
??_out <! Private stack checking enabled>
else
??_out <! Stack checking enabled>
endif
endif
ifndef DOS5
?DOS5=0
else
?DOS5=1
??_out <! DOS5 module>
endif
ifdef ?PROFILE
??_out <! Native profiling enabled>
endif
else
ASMpass=2
endif
;; Initialize all symbols used in the macros. Theses symbols will not be
;; included in any cross reference listing.
.xcref ?n,?ax,?eax,?bx,?ebx
.xcref ?cx,?ecx,?dx,?edx
.xcref ?si,?esi,?di,?edi,?es,?ds,?fs
.xcref ?gs
.xcref ?rsl,?cpd,?argl,?argc,?ba
.xcref ?acb,???,?po
.xcref ?pas,?pc
.xcref uconcat,mpush,mpop
.xcref ?ri,?pp,?pp1,?al1
.xcref ?ad,?ap,?atal,?dd,?dd1,?dd2
.xcref ?pg,?pg1,?aloc,?cs1,?cs2
.xcref ?DF,?TF,?ff,?PLM,?WIN,?ia,?pu,?adj
.xcref ?uf,?rp,?nx,?nd,?nodata1,?chkstk1,?DOS5
.xcref ?wfp,arg,cCall,cProc,assumes,?cs3,?cs2,?cs1
.xcref defgrp,addseg,createSeg
.xcref save,outif,errnz,errn$,errnz1
.xcref ?PLMPrevParm,?gcc
.xcref ?cCall1,?pcc
;; conditionals set by the macros
;;
;; ?pc Procedure class. If this is set to 1, then the procedure
;; is a far procedure, else it is a near procedure.
;;
;; ?ia Interface adjustment count for far procedures. The
;; interface adjustment defines the number of bytes of
;; storage allocated between BP and the first frame variable
;; allocated on the stack.
;;
;; Normally zero, it will be adjusted for both far windows
;; procedures and by register parameters.
;;
;; ?cpd Current procedure defined. This is set to a non-zero
;; value if a procedure is being defined (i.e a cProc has
;; been encountered, and cBegin has not).
;;
;; ?ba Begin active. This is set to a non-zero value if a
;; cBegin is active (i.e. a cBegin has been encountered,
;; and cEnd has not).
;;
;; ?wfp Windows far procedure. Set if a windows far procedure
;; Other variables that are defined once so that the .xcref command
;; doesn't get too upset if they show up missing!
?rsl = 0 ;;0 = no register to save
?cpd = 0 ;;<> 0 if in a procedure definition
?argl = 0 ;;length of arguments pushed on stack
?argc = 0 ;;# of arguments so far
?ba = 0 ;;<>0 if in a procedure (xbegin)
?acb = 0 ;;number of arguments to a call
??? = 0 ;;byte count of local storage
?po = 0 ;;byte count of parameters
?pas = 0 ;;autosave value for procedure
?pc = 0 ;;class of a procedure (near/far)
?ia = 0 ;;no adjustment
?pu = 0 ;;public flag for some macros
?adj = 0 ;;initial define for .xcref
?rp = 0 ;;count of register parameters
?uf = 0 ;;user's frame code specified
?nd = 0 ;;NODATA keyword specified
?nx = 0 ;;ATOMIC keyword specified
?wfp = 0 ;;window far procedure
?ff = 0 ;;forceframe keyword specified
?dd2 = 0 ;;used for globalx and staticx
?cCall1 = 0 ;;used for cCalls
?pcc = 0 ;;procedure calling convention
?PLMPrevParm = 0 ;;Used in parameter processing
.xcref ?casen
if1 ;;only define ?casen on pass 1
?casen = 0 ;;case sensitive assembly if <> 0
endif
?n = 0000000000000000b ;;register none
?ax = 0000000000000001b ;;register ax
?eax = 0000000000000010b ;;register eax
?bx = 0000000000000100b ;;register bx
?ebx = 0000000000001000b ;;register ebx
?cx = 0000000000010000b ;;register cx
?ecx = 0000000000100000b ;;register ecx
?dx = 0000000001000000b ;;register dx
?edx = 0000000010000000b ;;register edx
?si = 0000000100000000b ;;register si
?esi = 0000001000000000b ;;register esi
?di = 0000010000000000b ;;register di
?edi = 0000100000000000b ;;register edi
?ds = 0001000000000000b ;;register ds
?es = 0010000000000000b ;;register es
?fs = 0100000000000000b ;;register fs
?gs = 1000000000000000b ;;register gs
.cref
;; uconcat - unconditionally generate a statement from a field
;; of given parameters
;;
;; usage:
;; uconcat a,b,c,d,e,f,g
;;
;; where:
;; a,b are concatenated for field 1
;; c,d are concatenated for field 2
;; e,f,g are concatenated for field 3
uconcat macro a,b,c,d,e,f,g
a&b c&d e&f&g
endm
;; mpush pushes multiple registers onto the stack according to
;; a register specification.
;;
;; format:
;; mpush r
;;
;; where:
;; r is a numeric expression returned from ?ri
;; or any other valid register expression
mpush macro r
irp x,<ax,eax,bx,ebx,cx,ecx,dx,edx,si,esi,di,edi,ds,es,fs,gs>
if (r and ?&&x)
push x ;@
endif
endm
endm
;; mpop pops multiple registers from the stack according to
;; a register specification.
;;
;; format:
;; mpop r
;;
;; where:
;; r is a numeric expression returned from ?ri
;; or any other valid register expression
mpop macro r
irp x,<gs,fs,es,ds,edi,di,esi,si,edx,dx,ecx,cx,ebx,bx,eax,ax>
if (r and ?&&x)
pop x ;@
endif
endm
endm
;; save - flag that the indicated registers are to be saved/restored
;;
;; A flag is created which indicates which registers are to be saved
;; when the cCall macro is invoked, and then restored after the call.
;;
;; usage:
;; save <r>
;;
;; where r is the list of registers to save, which may be:
;;
;; register saves
;; AX AX
;; EAX EAX
;; BX BX
;; EBX EBX
;; CX CX
;; ECX ECX
;; DX DX
;; EDX EDX
;; SI SI
;; ESI ESI
;; DI DI
;; EDI EDI
;; DS DS
;; ES ES
;; FS FS
;; GS GS
;;
;; none nothing
;;
;; the macro generates a value for the variable ?rsl
save macro r
?rsl=0 ;;initialize save list
?ri ?rsl,<r> ;;generate magic number
endm
;; ?ri - or register indexes to variable
;;
;; ?ri is a macro that examines the passed argument list and computes
;; a register index variable.
;;
;; The values ORed with the variable are:
;;
;; ?n = 0000000000000000b ;;register none
;; ?ax = 0000000000000001b ;;register ax
;; ?eax = 0000000000000010b ;;register eax
;; ?bx = 0000000000000100b ;;register bx
;; ?ebx = 0000000000001000b ;;register ebx
;; ?cx = 0000000000010000b ;;register cx
;; ?ecx = 0000000000100000b ;;register ecx
;; ?dx = 0000000001000000b ;;register dx
;; ?edx = 0000000010000000b ;;register edx
;; ?si = 0000000100000000b ;;register si
;; ?esi = 0000001000000000b ;;register esi
;; ?di = 0000010000000000b ;;register di
;; ?edi = 0000100000000000b ;;register edi
;; ?ds = 0001000000000000b ;;register ds
;; ?es = 0010000000000000b ;;register es
;; ?fs = 0100000000000000b ;;register fs
;; ?gs = 1000000000000000b ;;register gs
;;
;; usage:
;; ?ri n,<r>
;; where:
;; n is the variable to contain the new index value
;; r is the register list
?ri macro n,r
irp x,<r>
.ERRNDEF ?&&x ;; Generate error if unknown register
n=n or ?&&x
endm
endm
;; parmx - generate reference to parameter(s) on the stack
;;
;; An equate is generated for addressing a paramter(s)
;; on the stack for the current procedural frame.
;;
;; An error message is generated if there isn't a current frame.
;;
;; usage:
;; parmx n
;; where:
;; x is the type of the argument(s) b=byte, w=word, d=dword
;; n is the name(s) to be given the parameter(s).
;;
;; Bytes are considered to be two bytes long for alignment.
;;
;; The parmd form of the macro generates three equates:
;;
;; name - for accessing the parameter as a double word
;; off_name - for accessing the offset (lsw) of the parameter
;; seg_name - for accessing the segment (msw) of the parameter
.xcref
.xcref parmB,parmW,parmD,parmQ,parmT,parmCP,parmDP
.cref
parmB macro n
?pp <n>,<byte>,2,1
endm
parmW macro n
?pp <n>,<word>,2,2
endm
parmD macro n
ife ?PLM ;;if to assemble for C
irp x,<n>
?pp <&&x>,<dword>,0,4
?pp <off_&&x>,<word>,2,2
?pp <seg_&&x>,<word>,2,2
endm
else ;;if to assemble for PL/M
irp x,<n>
?pp <seg_&&x>,<word>,2,2
?pp <off_&&x>,<word>,2,2
?pp <&&x>,<dword>,0,4
endm
endif
endm
parmQ macro n
?pp <n>,<qword>,8,8
endm
parmT macro n
?pp <n>,<tbyte>,10,10
endm
if sizec
parmCP macro n
parmD <n>
endm
else
parmCP macro n
parmW <n>
endm
endif
if sized
parmDP macro n
parmD <n>
endm
else
parmDP macro n
parmW <n>
endm
endif
;; ?pp is the generalized parameter definition macro
;;
;; usage:
;; ?pp m,t,l,s
;;
;; where:
;; n is the name(s) of the parameters
;; t is the type (word, dword)
;; l is the length to update parameter byte count by
;; s is the internal typing size
?pp macro n,t,l,s ;;process parameter
if ?cpd ;;must be in a procedure definition
.xcref
irp x,<n>
.xcref ?t&&x ;;don't want this in xref
?t&&x=s ;;save size info
ife ?PLM ;;if C calling convention
?pp1 x,<t>,,,%(?po+?adj)
?po=?po+l ;;update parameter offset
else ;;else assemble for PL/M
?PLMPrevParm=?PLMPrevParm+1 ;;Show next parameter
?po=?po+l ;;update parameter offset
?pp1 x,<t>,%?po,%?adj,,%?PLMPrevParm,%(?PLMPrevParm-1)
endif
endm
.cref
else
??error <parm(s) "&n" declared outside proc def>
endif
endm
;; ?pp1 is the macro that generates the text equate for the
;; parameter. Two options exist, one for the C calling
;; convention where the last parameter was the first pushed onto
;; the stack ('C' convention), and one for the PL/M calling
;; convention where the first parameter was the first
;; pushed (also the same as ms-pascal).
;;
;; The text generated will be of one of two forms:
;;
;; name equ (type ptr [bp+(adj+offset)]) for C
;; or
;; name equ (type ptr [bp+adj+?po-offset]) for PL/M
;;
;;
;; For C, since parameters are pushed first last, the offset
;; plus the adjust will point to the correct parameter.
;;
;; For PL/M, since parameters are pushed first first, the offset
;; of a parameter is much more complicated. A known portion of
;; the offset can be computed when the text equate is generated.
;;
;; What is known is the number of garbage bytes between BP and
;; the nearest parameter (in this case the last parameter), and
;; also how many bytes of parameters have preceeded this parameter.
;;
;; What is unknown is how many total bytes of parameters there will
;; be, which affects all the generated text equates since the offset
;; from bp must be determined at some point.
;;
;; Well, the offset from BP can be computed with one variable if
;; the following is remembered:
;;
;; the offset of any parameter from the first parameter is always
;; the current parameter offset (?po).
;;
;; With this in mind, you just have to figure out where the first
;; parameter is, which is:
;;
;; bp + garbage adjustment + distance to first parameter
;; or
;; bp + ?adj + ?po
;;
;; This implies that any parameter can be defined as:
;;
;; bp + ?adj + ?po -%?po
;;
;; Make any sense?
;;
;; For PL/M, a chain of self-purging macros will be generated
;; which will pass the evaluated ?po to any previous incarnation
;; of the macro. This will allow the text equate to be generated
;; with the actual offset instead of the symbolic ?po.
;;
;;
;; usage:
;; ?pp1 n,t,o,a,b,cpc,ppc
;;
;; where:
;; n is the name to be given the equate
;; t is the type (byte, word, dword)
;; o is the offset from the first parameter
;; a is the adjustment
;; b is the adjustment plus the offset from the first parameter
;; cpc is the number of parameters so far
;; ppc is cpc - 1
?pp1 macro n,t,o,a,b,cpc,ppc
ife ?PLM ;;if to generate for C
n equ (t ptr [bp+b])
else ;;else generate for PL/M
.xcref
.xcref ?PLMParm&cpc
.cref
?PLMParm&cpc &macro po
uconcat <n>,,<equ>,,<(t ptr [bp+>,%(a+po-o),<])>
?PLMParm&ppc po
purge ?PLMParm&cpc
&endm
endif
endm
;; parmR - register parameter
;;
;; parmR is the macro used for generating register parameters.
;; The space allocated for the register parameters will be
;; the ?ia (interface adjust) area which is between the old
;; BP and the first parameter. Normally this is empty (?ia=0),
;; or has the saved ds for a windows far procedure.
;;
;; Byte and dword register parameters will be allowed.
;;
;; usage:
;; parmR n,r,r2
;; where:
;; n is the name of the parameter
;; r is the register it is in
;; r2 is the offset register if a dword
ifndef ?NOPARMR
.xcref
.xcref ?pr,parmR
.cref
parmR macro n,r,r2
?pr n,r,r2,%?rp,%(?ia+2)
endm
;; ?pr - register parameter
;;
;; ?pr is the actual macro for generating the equates for
;; register parameters.
;;
;; usage:
;; parmR n,r,r2,i,o
;; where:
;; n is the name of the parameter
;; r is the register it is in
;; r2 is the offset register if a dword
;; i is the index of the ?rp to generate
;; o is the offset from bp where the parm will be
?pr macro n,r,r2,i,o
.xcref
ifnb <r2> ;;if a dword parameter
parmR seg_&n,r ;;define segment equate
parmR off_&n,r2 ;;define offset equate
n equ (dword ptr [bp-o-2]) ;;define dword equate
.xcref ?t&n
?t&n=4 ;;show a dword to cmacros
else
.xcref ?rp&i
?rp&i=0 ;;show no register(s)
ifdef ?&r ;;define register if valid
?rp&i=?&r
endif
if ??? or (?cpd eq 0) or (?rp&i eq 0)
??error <invalid parmR encountered: &n,&r>
exitm
endif
n equ (word ptr [bp-o]) ;;assume a word register
?t&n=2 ;;show a word to cmacros
irp x,<bh,ch,dh,bl,cl,dl,ah,al>
if ?&&x eq ?&r ;;if really a byte register
n equ (byte ptr [bp-o]) ;; then make it a byte
?t&n=1 ;;show a byte to cmacros
exitm
endif
endm
?ia=?ia+2 ;;show this guy is out there
?rp=?rp+1 ;;show one more register parameter
endif
.cref
endm
endif
;; localx - generate reference to a local variable on the stack
;;
;; An equate is generated for addressing a local variable
;; on the stack for the current procedural frame.
;;
;; usage:
;; localx n
;; where:
;; x is the type b=byte, w=word, d=dword, v=variable size
;; n is the name(s) to be given the variable(s).
;;
;; Bytes are considered to be two bytes long for alignment reasons
;;
;; The locald form of the macro generates three equates:
;;
;; name - for accessing the variable as a double word
;; off_name - for accessing the offset (lsw) of the variable
;; seg_name - for accessing the segment (msw) of the variable
.xcref
.xcref localB,localW,localD,localQ,localT,localCP,localDP,localV
.cref
localB macro n
?aloc <n>,<byte ptr>,1,1,0 ;; no alignment
endm
localW macro n
?aloc <n>,<word ptr>,2,2,1 ;; word aligned
endm
localD macro n
irp x,<n>
?aloc <seg_&&x>,<word ptr>,2,2,1 ;; word aligned
?aloc <off_&&x>,<word ptr>,2,2,1 ;; word aligned
?aloc <&&x>,<dword ptr>,0,4,1 ;; word aligned
endm
endm
localQ macro n
?aloc <n>,<qword ptr>,8,8,1 ;; word aligned
endm
localT macro n
?aloc <n>,<tbyte ptr>,10,10,1 ;; word aligned
endm
if sizec
localCP macro n
localD <n>
endm
else
localCP macro n
localW <n>
endm
endif
if sized
localDP macro n
localD <n>
endm
else
localDP macro n
localW <n>
endm
endif
localV macro n,a
?aloc <n>,,%(a),0,1 ;; word aligned
endm
;; ?aloc is the macro that actually allocates local storage.
;; it is only invoked by the localx macros.
;;
;; usage:
;; ?aloc n,t,l,s,a
;; where:
;; n is a list of names of local variable of the
;; given type.
;; t is the text string for the given variable
;; and is one of:
;; word ptr
;; dword ptr
;; byte ptr
;; or alternatively left blank for variable size
;; allocations (no implicit type).
;; l is the size of the variable in bytes
;; s is the internal type flag (size), and is one of:
;; word - 2
;; dword - 4
;; byte - 1
;; variable - 0
;; a is a flag indicating that word alignment is to be
;; forced for this type of item.
;;
;; NOTE: It is assumed that the stack is already aligned on a word
;; boundary when the cProc is invoked. The macros will guarantee
;; to allocate an even number of bytes on the stack to maintain
;; word alignment.
?aloc macro n,t,l,s,a
if ?cpd ;;must be in a proc def
.xcref
irp x,<n> ;;generate symbol equates
???=???+l ;;update length of locals
if a ;;if align, then force word alignment
???=((??? + 1) and 0fffeh)
endif
?al1 x,<t>,%(???+?ia) ;;?ia will always be valid (0 or 2)
.xcref ?t&&x
?t&&x=s ;;save size info
endm
.cref
else
??error <locals "&n" declared outside procedure def>
endif
endm
;; ?al1 - allocate local, continued.
;;
;; ?al1 actually generates the text equate for the local variable.
;; The form of the text equate generated is more or less:
;;
;; name equ (type ptr [bp-?ia-nn])
;; or
;; name equ ([bp-?ia-nn])
;;
;; where:
;; ?ia is defined to be either zero, or is defined to be
;; the number of bytes between the saved BP and the first
;; local. ?ia is only applicable if the current cProc is
;; a windows far procedure or if parmRs have been
;; encountered. If not, the ?ia will be zero. since ?ia
;; is determinable prior to invoking this macro, it will be
;; added into the offset ("nn") passed to this macro
;;
;; usage:
;; ?al1 n,t,o
;; where:
;; n is the name for the text equate
;; t is the type of the equate
;; o is the offset of the equate
?al1 macro n,t,o
n equ (t [bp-o])
endm
;; ?gcc - get calling convention
;;
;; ?gcv sets the given symbol to the calling convention
;; to be used.
;;
;; usage:
;; ?gcc s,i,cc
;;
;; where:
;; s is the symbol to return the convention in
;; s = 0 if 'C' calling convention
;; s = 1 if PL/M (PASCAL) calling convention
;; i is the initial value for s
;; cc is the calling convention override, and may be one of
;; C use 'C' convention
;; PLM use PL/M calling convention
;; PASCAL use PL/M calling convention
?gcc macro s,i,cc
s = i ;;Set default calling convention
ifnb <cc>
ifidn <cc>,<C> ;;If overriding default
s=0 ;; 'C' calling convention
endif
ifidn <cc>,<PLM>
s=1 ;; PL/M calling convention
endif
ifidn <cc>,<PASCAL>
s=1 ;; PL/M calling convention
endif
endif
endm
ifndef ?NOGLOBAL
.xcref
.xcref globalB,globalW,globalD,globalQ,globalT,globalCP,globalDP
.cref
;; globalx - define global data of type x
;;
;; usage:
;; globalx n,i,s,c
;; where:
;; x is the type of the variable b=byte, w=word, d=dword
;; q=quad word, t=tenbytes, cp=code pointer, dp=data pointer
;; n is the name to be given the variable.
;; i is the initial value of the variable.
;; s is the duplication factor
;; c is the convention, C for C, PLM or PASCAL for PL/M.
;; The default (?PLM flag) will be used if not specified.
;;
;; The D form will generate two extra equates of the form off_n and seg_n.
globalB macro n,i,s,c
?ad <n>,1
?dd n,1,<byte>,<db>,<i>,<s>,<c>
endm
globalW macro n,i,s,c
?ad <n>,2
?dd n,1,<word>,<dw>,<i>,<s>,<c>
endm
globalD macro n,i,s,c
?ad <n>,4
?dd n,1,<dword>,<dd>,<i>,<s>,<c>
off_&n equ n
seg_&n equ n[2]
endm
globalQ macro n,i,s,c
?ad <n>,8
?dd n,1,<qword>,<dq>,<i>,<s>,<c>
endm
globalT macro n,i,s,c
?ad <n>,10
?dd n,1,<tbyte>,<dt>,<i>,<s>,<c>
endm
if sizec
globalCP macro n,i,s,c
globalD n,<i>,<s>,<c>
endm
else
globalCP macro n,i,s,c
globalW n,<i>,<s>,<c>
endm
endif
if sized
globalDP macro n,i,s,c
globalD n,<i>,<s>,<c>
endm
else
globalDP macro n,i,s,c
globalW n,<i>,<s>,<c>
endm
endif
endif
ifndef ?NOSTATIC
.xcref
.xcref staticB,staticW,staticD,staticQ,staticT,staticCP,staticDP
.cref
;; staticx - define static data of type x
;;
;; usage:
;; staticx n,i,s
;; where:
;; x is the type of the variable b=byte, w=word, d=dword
;; q=quad word, t=tenbytes, cp=code pointer, dp=data pointer
;; n is the name to be given the variable.
;; i is the initial value of the variable.
;; s is the duplication factor
;;
;; statics do not generate an underscored version of the symbol
;; since they are intended to be internal symbols. If they are
;; required to be public, use globlax.
staticB macro n,i,s
?ad <n>,1
?dd n,0,<byte>,<db>,<i>,<s>,<PLM> ;;PLM to keep from generating _
endm
staticW macro n,i,s
?ad <n>,2
?dd n,0,<word>,<dw>,<i>,<s>,<PLM>
endm
staticD macro n,i,s
?ad <n>,4
?dd n,0,<dword>,<dd>,<i>,<s>,<PLM>
endm
staticQ macro n,i,s
?ad <n>,8
?dd n,0,<qword>,<dq>,<i>,<s>,<PLM>
endm
staticT macro n,i,s
?ad <n>,10
?dd n,0,<tbyte>,<dt>,<i>,<s>,<PLM>
endm
if sizec
staticCP macro n,i,s
staticD n,<i>,<s>
endm
else
staticCP macro n,i,s
staticW n,<i>,<s>
endm
endif
if sized
staticDP macro n,i,s
staticD n,<i>,<s>
endm
else
staticDP macro n,i,s
staticW n,<i>,<s>
endm
endif
endif
;; ?dd is the generalized data definition macro.
;;
;; format:
;; ?dd n,p,t,d,i,s,c
;; where:
;; n is the name of the procedure
;; p is the public flag
;; t is the assembler type (byte, word, dword)
;; d is the assembler directive (db,dw or dd)
;; i is the initial value
;; s is a duplication factor
;; c is the convention, C for C, PLM or PSACAL for PL/M.
;; The default (?PLM flag) will be used if not specified.
?dd macro n,p,t,d,i,s,c
?gcc ?dd2,%?PLM,<c> ;;Set calling convention
ife ?dd2 ;;If 'C'
n label t
?dd1 _&n,p,<d>,<i>,<s> ;;Microsoft C uses leading underscores
else
?dd1 n,p,<d>,<i>,<s> ;;If PL/M
endif
endm
;; ?dd1 is the generalized data definition macro.
;;
;; format:
;; ?dd1 n,p,d,i,s
;; where:
;; n is the name of the procedure
;; p is the public flag
;; d is the assembler directive (db,dw or dd)
;; i is the initial value
;; s is a duplication factor
?dd1 macro n,p,d,i,s
if p
public n
endif
ifb <s>
n d i
else
ifb <i>
n d s dup (?)
else
n d s dup (i)
endif
endif
endm
ifndef ?NOEXTERN
.xcref
.xcref ?ex1,?ex2,externB,externW,externD,externQ,externT
.xcref externNP,externFP,externP,externCP,externDP,externA
.cref
?ex2 = 0
;; externx - define external data of type x
;;
;; usage:
;; externx n,c
;; where:
;; x is the type of the variable b=byte, w=word, d=dword
;; q=quad word, t=tenbytes, cp=code pointer
;; dp=data pointer, a=absolute
;; n is a list of names to define
;; c is the convention, C for C, PLM or PSACAL forPL/M.
;; The default (?PLM flag) will be used if not specified.
externA macro n,c ;;40h is reserved for whatever will
?ex1 <n>,40h,<abs>,<c>,<> ;; be done in the future for ASB
endm ;; externals
externB macro n,c
?ex1 <n>,1,<byte>,<c>,<>
endm
externW macro n,c
?ex1 <n>,2,<word>,<c>,<>
endm
externD macro n,c
?ex1 <n>,4,<dword>,<c>,<>
endm
externQ macro n,c
?ex1 <n>,8,<qword>,<c>,<>
endm
externT macro n,c
?ex1 <n>,10,<tbyte>,<c>,<>
endm
externNP macro n,c
?ex1 <n>,2,<near>,<c>,<cc>
endm
externFP macro n,c
?ex1 <n>,4,<far>,<c>,<cc>
endm
if sizec
externP macro n,c
?ex1 <n>,4,<far>,<c>,<cc>
endm
else
externP macro n,c
?ex1 <n>,2,<near>,<c>,<cc>
endm
endif
if sizec
externCP macro n,c
?ex1 <n>,4,<dword>,<c>,<>
endm
else
externCP macro n,c
?ex1 <n>,2,<word>,<c>,<>
endm
endif
if sized
externDP macro n,c
?ex1 <n>,4,<dword>,<c>,<>
endm
else
externDP macro n,c
?ex1 <n>,2,<word>,<c>,<>
endm
endif
;; ?ex1 is the generalized external definition macro
;;
;; format:
;; ?ex1 n,s,d,c,scv
;; where:
;; n is are the names of the externals
;; s is the size in bytes (used for typing)
;; d is the type
;; c is the convention, C for C, PLM or PSACAL for PL/M.
;; The default (?PLM flag) will be used if not specified.
;; scv save calling convention. If this field is "cc", then
;; the calling convention will be saved in a ?CCn equ.
?ex1 macro n,s,d,c,scv
?gcc ?ex2,%?PLM,<c>
irp x,<n>
.xcref
.xcref ?t&&x
.cref
?t&&x=s ;;save size info
ife ?ex2
extrn _&&x:&d
x equ _&&x
else
extrn x:&d
endif
ifidn <scv>,<cc> ;;save calling convention (C or PL/M)
.xcref ;; if NP, FP, or P
.xcref ?CC&&x
.cref
?CC&&x=?ex2
endif
endm
endm
endif
ifndef ?NOLABEL
.xcref
.xcref ?lb1,?lblpu,?lb2
.xcref labelB,labelW,labelD,labelQ,labelT
.xcref labelNP,labelFP,labelP,labelCP,labelDP
.cref
?lblpu = 0
?lb2 = 0
;; labelx - define label of data type x
;;
;; usage:
;; labelx n,c
;; where:
;; x is the type of the variable b=byte, w=word, d=dword
;; q=quad word, t=tenbytes, cp=code pointer, dp=data pointer
;; n is a list of names to define, the first of which can
;; be the keyword public
;; c is the convention, C for C, PLM or PSACAL for PL/M.
;; The default (?PLM flag) will be used if not specified.
labelB macro n,c
?lb1 <n>,1,<byte>,<c>
endm
labelW macro n,c
?lb1 <n>,2,<word>,<c>
endm
labelD macro n,c
?lb1 <n>,4,<dword>,<c>
endm
labelQ macro n,c
?lb1 <n>,8,<qword>,<c>
endm
labelT macro n,c
?lb1 <n>,10,<tbyte>,<c>
endm
labelNP macro n,c
?lb1 <n>,2,<near>,<c>
endm
labelFP macro n,c
?lb1 <n>,4,<far>,<c>
endm
if sizec
labelP macro n,c
?lb1 <n>,4,<far>,<c>
endm
else
labelP macro n,c
?lb1 <n>,2,<near>,<c>
endm
endif
if sizec
labelCP macro n,c
?lb1 <n>,4,<dword>,<c>
endm
else
labelCP macro n,c
?lb1 <n>,2,<word>,<c>
endm
endif
if sized
labelDP macro n,c
?lb1 <n>,4,<dword>,<c>
endm
else
labelDP macro n,c
?lb1 <n>,2,<word>,<c>
endm
endif
;; ?lb1 is the generalized label definition macro
;;
;; format:
;; ?lb1 n,s,d
;; where:
;; n are the names of the labels
;; s is the size in bytes (used for typing)
;; d is the type
;; c is the convention, C for C, PLM or PSACAL for PL/M.
;; The default (?PLM flag) will be used if not specified.
?lb1 macro n,s,d,c
?gcc ?lb2,%?PLM,<c>
?lblpu=0
irp x,<n>
ifidn <x>,<PUBLIC>
?lblpu=1
else
.xcref
.xcref ?t&&x
.cref
?t&&x=s ;;save size info
ife ?lb2 ;;If C
if ?lblpu
public _&&x
endif
_&&x label &d
x equ _&&x
else ;;If PL/M
if ?lblpu
public x
endif
x label &d
endif
endif
endm
endm
endif
ifndef ?NODEF
;; defx - inform macros that name is of type x
;;
;; The given name(s) is flaged to be of the given type. This macro
;; is intended for giving types to variables that were not generated
;; by the macros (i.e., static storage). There must be a type definition
;; for all parameters in a call list.
;;
;; usage:
;; defx n
;; where:
;; x is the type of the variable b=byte, w=word, d=dword
;; n is the name(s) to be given the variable(s).
;;
;; Bytes are considered to be two bytes long for alignment reasons
.xcref
.xcref defB,defW,defD,defQ,defT,defCP,defDP
.cref
defB macro n
?ad <n>,1
endm
defW macro n
?ad <n>,2
endm
defD macro n
?ad <n>,4
endm
defQ macro n
?ad <n>,8
endm
defT macro n
?ad <n>,10
endm
if sizec
defCP macro n
defD <n>
endm
else
defCP macro n
defW <n>
endm
endif
if sized
defDP macro n
defD <n>
endm
else
defDP macro n
defW <n>
endm
endif
endif
; ?ad is the macro which creates a definition for the given
; symbol
;
; usage:
; ?ad <n>,s
; where:
; n is a list of names to define
; s is the size info (1,2,4,8,10)
?ad macro n,s
irp x,<n>
.xcref
.xcref ?t&&x
.cref
?t&&x=s ;;save size info
endm
endm
ifndef ?NOPTR
.xcref
.xcref regPtr,farPtr
.cref
;; regPtr generates information allowing a 32-bit pointer currently
;; in a register to be pushed as a parameter to a subroutine using
;; the cCall macro.
;;
;; usage:
;; regptr n,s,o
;; where:
;; n is the name the argument will be known as
;; s is the register containing the segment portion
;; of the pointer
;; o is the register containing the offset portion
;; of the pointer
;;
;; 2/14/85 - made obsolete with farptr
regPtr macro n,s,o
farPtr n,s,o
endm
;; farPtr generates information allowing a 32-bit pointer to be
;; pushed as a parameter to a subroutine using the cCall macro.
;;
;; usage:
;; farptr n,s,o
;; where:
;; n is the name the argument will be known as
;; s is the segment portion of the pointer
;; o is the offset portion of the pointer
;;
;; Note that any cast must have been made in the argument itself
;; (i.e. regptr ptr1,ds,<word ptr 3[si]>)
farPtr macro n,s,o
.xcref
.xcref ?t&n
.cref
n &macro
push s ;@
push o ;@
&endm
?t&n=80h
endm
endif
;; arg - declare argument
;;
;; The given argument(s) is added to the argument list structure
;;
;; format:
;; arg a
;;
;; where:
;; a is any valid argument to push.
;;
;; If any element in arglist has not been defined or isn't a 16-bit
;; register, then a complete specification must have been given in a
;; text equate and a defx also given (if not, you'll pay the penalty!)
arg macro a
irp x,<a>
?argc=?argc+1 ;;increment the arg count
?atal <x>,%?argc ;;generate argument
endm
endm
;; ?atal (add to argument list) generates a macro that will cause
;; the given argument to be processed when invoked. It is used by
;; the arg macro only.
?atal macro n,i
.xcref
.xcref ?ali&i
.cref
?ali&i &macro
?ap n
&endm
endm
;; ?ap - process arguments and place onto stack
;;
;; The given argument is processed (type checking) and place on
;; the stack for a pending call. There must be a type definition
;; for all arguments (except words). This can be done by using
;; text equates and the defx macro.
;;
;; format:
;; ?ap n
;; where:
;; n is the name of the argument to be pushed
;;
;; The variable ?argl is updated by the length of the arguments
;; pushed so that the stack can be cleaned up after the call.
?ap macro n
?argl=?argl+2 ;;assume one word is pushed
ifdef ?t&n
ife ?t&n-1 ;;byte type
push word ptr (n) ;@
exitm
endif
ife ?t&n-2 ;;word type
push n ;@
exitm
endif
ife ?t&n-4 ;;dword type
push word ptr (n)[2] ;@
push word ptr (n) ;@
?argl=?argl+2
exitm
endif
ife ?t&n-8 ;;qword type
push word ptr (n)[6] ;@
push word ptr (n)[4] ;@
push word ptr (n)[2] ;@
push word ptr (n) ;@
?argl=?argl+6
exitm
endif
if ?t&n and 80h ;;far pointer type
n
?argl=?argl+2
exitm
endif
ife ?t&n ;;variable storage
push word ptr (n) ;@
exitm
endif
endif
push n ;;unknown or register or immediate ;@
endm
;; cCall - call a 'c' language procedure
;;
;; The given procedure is called with the given parameters.
;; If the calling convention is C, the arguments are pushed
;; in reverse order, and removed after the called procedure
;; returns. If the calling conventing is PL/M, the arguments
;; are pushed as they were encountered, and the called procedure
;; is assumed to have removed them from the stack.
;;
;; The calling convention priority will be:
;; 1) that specified on the cCall if present
;; 2) that defined by the target
;; 3) the default (?PLM flag)
;;
;; format:
;; ccall n,<a>,c
;;
;; where:
;; n is the name of the procedure to call
;; a are arguments to be pushed (optional, may be
;; specified with the "arg" macro.
;; c is the convention, C for C, PLM or PSACAL for PL/M.
;; The default (?PLM flag) will be used if not specified.
cCall macro n,a,c
ifnb <a> ;;add any arguments to list
arg <a>
endif
mpush %?rsl ;;save registers (if any)
ifdef ?CC&n ;;if calling convention has been
?cCall1=?CC&n ;; defined for target, use it
else ;;else use the default
?cCall1=?PLM
endif
ifnb <c> ;;If possible override, check it out
?gcc ?cCall1,%?cCall1,<c>
endif
?argl=0 ;;init argument length
ife ?cCall1 ;;if C calling convention
?acb=?argc ;;initialize for looping
else
?acb=1 ;;initialize for looping
endif
rept ?argc ;;push arguments and purge macros
uconcat <?ali>,%?acb
uconcat <purge>,,<?ali>,%?acb
ife ?cCall1 ;;if C calling convention
?acb=?acb-1
else
?acb=?acb+1
endif
endm
call n ;;call the procedure ;@
if ((?cCall1 eq 0) and (?argl ne 0)) ;;If C calling convention and arguments
add sp,?argl ;; then remove them ;@
endif
mpop %?rsl ;;pop all specified regs
?rsl=0 ;;invalidate save list
?argc= 0 ;; " arguments
?argl= 0
endm
;; cProc - define a 'c' procedure
;;
;; cProc is the procedure definition for procedures.
;;
;; format:
;; cProc n,cf,a
;; where:
;; n is the name of the procedure
;;
;; cf controls certain definitions, and may be:
;; NEAR proc is to be a near label
;; FAR proc is to be a far label
;; PUBLIC proc is to be defined as public
;; SMALL call makeframe procedure
;; NODATA dont create prolog code to setup DS
;; ATOMIC don't link stack if not needed
;; NODATA must be specified for ATOMIC
;; FORCEFRAME Force generation of a frame
;; C proc is to be a C procedure
;; PLM proc is to be a PL/M procedure
;; PASCAL proc is to be a PL/M procedure
;; WIN proc is to be a windows procedure
;; NONWIN proc isn't to be a windows procedure
;;
;; a is a list of registers that are to be saved whenever
;; the procedure is invoked.
;;
;; makeframe procedure: If small is specified, then
;; the "makeframe procedure" is invoked instead of
;; generating normal prologues/epilogues
;;
;; A call is performed to the makeframe procedure. The
;; call is followed by two bytes. the first byte is the
;; number of locals to allocate for the frame, the second
;; is the number of bytes of parameters. The makeframe
;; procedure will in turn call the cProc routine at the
;; address following the data bytes. When the cProc is
;; finished, it will do a near return to the makeframe
;; procedure to clean up the frame and exit.
;;
;; Note that register parameters and makeframe are
;; incompatible and cannot be used together.
;;
;; The makeframe procedure will save SI, DI, and also
;; DS if a far procedure. These registers will be
;; removed from the autosave list if specified.
cProc macro n,cf,a
if ?cpd
?utpe ;;generate unterminated proc error
endif
?cpd=1 ;;a procdef is active now
???=0 ;;no locals are defined yet
?argc=0 ;;no arguments are defined
?ba=0 ;;not in a procedure
?po=0 ;;initial parameter offset
?pu=0 ;;initial public setting
?ia=0 ;;no special prolog/epilog
?adj=4 ;;parameter adjustment (near ret+bp)
?rp=0 ;;no register parameters
?uf=0 ;;don't use makeframe
?wfp=?WIN ;;default far procedure (win or not)
?ff=0 ;;don't force frame setup
?pas=0 ;;process register save list
?pcc=?PLM ;;calling convention (C or PL/M)
ifnb <a> ;;register save list
?ri ?pas,<a>
endif
?pc=sizec ;;default size
?nd=?nodata1 ;;default NODATA flag
?nx=0 ;;default is not ATOMIC
irp x,<cf>
ifidn <x>,<FAR> ;;if far,
?pc=1 ;; set far flag
endif
ifidn <x>,<NEAR> ;;if near,
?pc=0 ;; set near flag
endif
ifidn <x>,<PUBLIC> ;;if public,
?pu=1 ;; set public flag
endif
ifidn <x>,<SMALL> ;;if small
?uf=1 ;; set small flag
endif
ifidn <x>,<DATA> ;;if data
?nd=0 ;; reset NODATA flag
endif
ifidn <x>,<NODATA> ;;if NODATA
?nd=1 ;; set NODATA flag
endif
ifidn <x>,<ATOMIC> ;;if ATOMIC
?nx=1 ;; set ATOMIC flag
endif
ifidn <x>,<C> ;;if to force C calling convention
?pcc=0 ;; set flag
endif
ifidn <x>,<PLM> ;;if to force PLM calling convention
?pcc=1 ;; set flag
endif
ifidn <x>,<PASCAL> ;;if to force PLM calling convention
?pcc=1 ;; set flag
endif
ifidn <x>,<WIN> ;;if to force a Window's frame
?wfp=1 ;; set flag
endif
ifidn <x>,<NONWIN> ;;if not to be a Window's frame
?wfp=0 ;; set flag
endif
endm
if ?pcc ;;If PLM
?PLMPrevParm=0 ;; show no previous parameter
.xcref
.xcref ?PLMParm0
.cref
?PLMParm0 &macro ;;Null macro to terminate
purge ?PLMParm0
&endm
endif
.xcref
.xcref ?CC&n
.cref
?CC&n=?pcc ;;Save procedure type
if (?nx eq 1) and (?nd eq 0) ;;ATOMIC requires NODATA
?nx = 0 ;;clear the ATOMIC keyword
??error <ATOMIC specified without NODATA - ATOMIC ignored>
endif
if ?pc ;;if a far procedure
if ?wfp ;;if windows
ife ?nx ;;if not ATOMIC
?ia=2 ;; adjust locals for saved ds
?pas = ?pas and (not ?ds) ;;no need for extra save
endif
endif
?adj=?adj+2 ;;far, make parameter adjustment
else
?wfp=0 ;;not a far windows procedure
endif
if ?uf ;;don't save these if user frame
?pas = ?pas and (not (?si+?di))
endif
ife ?pcc
?pg <_&n>,%?pu,%?pc,%?pas,%?wfp,<n>,%?pcc
else
?pg <n>,%?pu,%?pc,%?pas,%?wfp,<n>,%?pcc
endif
endm
;; ?pg - generate begin and nested macros for current procedure
;;
;; format:
;; ?pg n,p,c,a,w,nnu,cc
;; where:
;; n is the name of the procedure
;; p is the public flag
;; c is the class definition for the procedure
;; a is an enumerated list of registers to save
;; at entry and restore at exit
;; w true if a far windows procedure
;; nnu procedure name without any underscore
;; cc calling convention (C or PL/M)
;;
;;
;; local stack allocation will be forced to an even byte count to
;; maintain stack word alignment.
?pg macro n,p,c,a,w,nnu,cc
.xcref
if ?uf ;;if user frame
if ?nd
??error <NODATA encountered in &n - user frame ignored>
?uf=0
endif
endif
.xcref cBegin
cBegin &macro g ;;generate cBegin macro
.xcref
if cc ;;Finish definition of parameters
uconcat <?PLMParm>,%?PLMPrevParm,%?po
endif
if ?uf ;;if user frame
if ?rp
??error <parmR encountered in &n - user frame ignored>
?uf=0
endif
endif
?pg1 <n>,c,a,%?po,w,%?uf,%?nd,%?rp,cc ;;generate cEnd macro
?cpd=0 ;;terminate current proc def
?argc=0 ;;no arguments are defined yet
?ba=1 ;;have reached a begin
???=(???+1) and 0fffeh ;;word align local storage
if p ;;If to be public
public n
endif
ife c ;;declare procedure type
n proc near
else
n proc far
endif
ife cc ;;if 'C' calling convention
nnu equ n ;; generate label without underscore
endif
ifidn <g>,<nogen> ;;if nogen specified, shouldn't have
if ???+?po+a+?rp ;; parms, locals, or saved regs
??_out <cBegin - possible invalid use of nogen>
endif
else ;;must generate a frame
if ?uf ;;if user frame code specified
?mf c,%???,%?po ;; call user's makeframe
mpush a ;; save specified registers
else
if w ;;if a far windows procedure
ife ?nd ;;if not NODATA,
mov ax,ds ;; then set AX = currentds, and ;@
nop ;; leave room for MOV AX,1234h ;@
endif
ife ?nx ;;if not ATOMIC, far frame must be set
ife ?DOS5 ;;if not DOS5, then set far frame flag
inc bp ;; by incrementing the old bp ;@
endif
push bp ;@
mov bp,sp ;@
push ds ;@
else ;;ATOMIC procedure
if ?ff+???+?po+?rp ;;if any locals or parameters
push bp ;; then must set frame pointer ;@
mov bp,sp ;; to be able to access them ;@
endif
endif
ife ?nd ;;if not NODATA, then AX should
mov ds,ax ;; have the ds to use ;@
endif
else ;;not windows. use standard prolog
if ?ff+???+?po+?rp ;;if any locals or parameters
push bp ;; then must set frame pointer ;@
mov bp,sp ;; to be able to access them ;@
endif
endif
if ?rp ;;if parmR's, push them before
?uf=0 ;; allocating locals and saving
rept ?rp ;; the autosave registers
uconcat mpush,,?rp,%?uf
?uf=?uf+1
endm
endif
if ??? ;;if locals to allocate
if ?chkstk1 ;;if stack checking enabled
ifdef ?CHKSTKPROC ;;if user supplied stack checking
?CHKSTKPROC %??? ;; invoke it with bytes requested
else
mov ax,??? ;;invoke default stack checking ;@
ife cc
call _chkstk ;@
else
call chkstk ;@
endif
endif
else ;;no stack checking
sub sp,??? ;; allocate any local storage ;@
endif
endif
mpush a ;;save autosave registers
endif
ifdef ?PROFILE ;;if profiling enabled
if c ;; and a far procedure
call StartNMeas ;; invoke profile start procedure ;@
endif
endif
endif
.cref
purge cBegin ;;remove the macro
&endm ;;end of cBegin macro
.xcref ?utpe
?utpe &macro
??error <unterminated procedure definition: "&n">
&endm
.cref
endm ;;end of ?pg macro
;; ?pg1 - generate end macro for current procedure
;;
;; format:
;; ?pg1 n,c,a,o,w,f,d,r,cc
;; where:
;; n is the name of the procedure
;; c is the class definition for the procedure
;; a is an enumerated list of registers to save
;; at entry and restore at exit
;; o is the number of bytes of paramteres to remove at exit
;; w true if a far windows procedure
;; f is 1 if to use the user's makeframe procedure
;; d is 1 if NODATA procedure
;; r number of register parameters
;; cc calling convention (C or PL/M)
?pg1 macro n,c,a,o,w,f,d,r,cc
.xcref
.xcref cEnd
cEnd &macro g ;;start of cEnd macro
.xcref
?ba=0 ;;no longer in a procedure
ifidn <g>,<nogen> ;;validate nogen usage
if o+a+r
??_out <cEnd - possible invalid use of nogen>
endif
else ;;must generate an epilog
ifdef ?PROFILE ;;if profiling enabled
if c ;; and a far procedure
call StopNMeas ;; invoke profile stop procedure
endif ;; (doesn't trash DX:AX)
endif
mpop a ;;restore autosaved registers
if f ;;if to use the "makeframe" procedure
db 0c3h ;; near return to user's makeframe @
else
if w ;;if far win proc, use special epilog
ife ?nx ;;if not ATOMIC, bp was pushed
if (?TF eq 0) or (???+?rp) ;;if cannot assume valid sp
lea sp,-2[bp] ;; or locals or parmR's, get valid SP @
endif
pop ds ;;restore saved ds and bp @
pop bp ;; @
ife ?DOS5 ;;if not DOS5, bp was
dec bp ;; incremented to mark far frame @
endif
else ;;ATOMIC frame was set up
if (?TF eq 0) or (???+?rp) ;;if cannot assume valid sp
mov sp,bp ;; or locals or parmR's, get valid SP @
endif
if ???+?po+?rp
pop bp ;@
endif
endif
else ;;non-windows standard epilog
if ?ff+???+?po+?rp ;;if any parameters
if (?TF eq 0) or (???+?rp) ;;if cannot assume valid SP
mov sp,bp ;; or locals or parmR's, get valid SP;@
endif
pop bp ;@
endif
endif
ife cc ;;if C calling convention
ret ;; return ;@
else ;;else
ret o ;; return and remove paramteres ;@
endif
endif
endif
n endp ;;end of process
.cref
purge cEnd ;;remove the macro
&endm
.cref
endm
; assumes is a macro that will set up the assumes for a segment
; or group created with the createSeg macro. If the assumed
; value passed in isn't known, then a normal assume is made.
;
; usage:
; assumes s,g
;
; where:
; s is the register to make the assumption about
; g is the value to assume is in it
assumes macro s,ln
ifndef ln&_assumes
assume s:ln
else
ln&_assumes s
endif
endm
; createSeg is a macro that sets up a segment definition and
; a logical name for that segment. The logical name can be
; used to enter the segment, but it cannot be used for anything
; else.
;
; usage:
; createSeg n,ln,a,co,cl,grp
; where:
; n is the physical name of the segment
; ln is the name it is to be invoked by
; a is the alignment, and is optional
; co is the combine type, and is optional
; cl is the class, and is optional
; grp is the name of the group that contains this segment
createSeg macro n,ln,a,co,cl,grp
ifnb <grp>
addseg grp,n
else
ln&OFFSET equ offset n:
ln&BASE equ n
?cs3 <ln>,<n>
endif
ifnb <cl>
n segment a co '&cl'
else
n segment a co
endif
n ends
?cs1 <ln>,<n>
endm
addseg macro grp,seg
.xcref
.xcref grp&_def
.cref
ifndef grp&_def
grp&_def=0
endif
if grp&_def ne ASMpass
.xcref
.xcref grp&_add
.cref
grp&_add &macro s
grp&_in <seg>,s
&endm
.xcref
.xcref grp&_in
.cref
grp&_in &macro sl,s
ifb <s>
grp group sl
else
grp&_add &macro ns
grp&_in <sl,s>,ns
&endm
endif
&endm
grp&_def=ASMpass
else
grp&_add seg
endif
endm
defgrp macro grp,ln
addseg grp
ifnb <ln>
irp x,<ln>
?cs3 <&x>,<grp>
x&&OFFSET equ offset grp:
x&&BASE equ grp
endm
endif
endm
?cs1 macro ln,n
.xcref
.xcref ln&_sbegin
.cref
ln&_sbegin &macro
.xcref
.xcref ?mf
.cref
?mf &&macro c,l,p ;;when sBegin is invoked, generate
if c ;; the makeframe macro
extrn n&_FARFRAME:near ;; make frame for far procedures ;@
call n&_FARFRAME ;@
else
extrn n&_NEARFRAME:near ;; make frame for near procedures ;@
call n&_NEARFRAME ;@
endif
db l shr 1 ;;define number of locals ;@
db p shr 1 ;;define number of parameters ;@
&&endm
?cs2 <ln>,<n>
n segment
&endm
endm
?cs2 macro ln,n
.xcref
.xcref sEnd
.cref
sEnd &macro
n ends
purge ?mf ;;delete the makeframe macro
purge sEnd
&endm
endm
?cs3 macro ln,n
.xcref
.xcref ln&_assumes
.cref
ln&_assumes &macro s
assume s:&n
&endm
endm
; sBegin is the macro that opens up the definition of a segment.
; The segment must have already been defined with the createSeg
; macro.
;
; usage:
; sBegin ln
;
; where:
; ln is the logical name given to the segment when
; it was declared.
.xcref
.xcref sBegin
.cref
sBegin macro ln
ln&_sbegin
endm
ife ?DF
; Define all segments that will be used. This will allow the
; assume and groups to be set up at one given place, and also
; allow quick changes to be made
;
; createSeg name,logname,align,combine,class,group
createSeg _TEXT,Code,word,public,CODE
ife ?nodata1
createSeg _DATA,Data,word,public,DATA,DGROUP
defgrp DGROUP,Data
endif
if ?chkstk1
ifndef ?CHKSTKPROC
externp <chkstk>
endif
endif
endif
; errnz exp - generate error message if expression isn't zero
;
; The errnz will generate an error message if the expression "exp"
; does not evaluate to zero. This macro is very useful for testing
; relationships between items, labels, and data that was coded into
; an application.
;
; errnz <offset $ - offset label> ;error if not at "label"
; errnz <eofflag and 00000001b> ;eofflag must be bit 0
;
; For expressions involving more than one token, the angle brackets
; must be used.
;
; The macro is only evaluated on pass 2, so forward references may be
; used in the expression.
errnz macro x ;;display error if expression is <>0
if2
if x ;;if expression is non-zero,
errnz1 <x>,%(x)
endif
endif
endm
errnz1 macro x1,x2
= *errnz* x1 = x2
.err
endm
; errn$ label,exp - generate error message if label (exp) <> $
;
; The errnz will generate an error message if the label and "exp"
; does not evaluate to the current value of the location counter.
; This macro is very useful for testing relationships between
; labels and the location counter that was coded into an application.
;
; examples: errn$ label ;error if not at "label"
; errn$ label,+3 ;error if not three bytes from "label"
; errn$ label,-3 ;error if not three bytes past "label"
;
; If no "exp" is given, it is the same as specifying 0
;
; The macro is only evaluated on pass 2, so forward references may be
; used in the expression.
errn$ macro l,x ;;error if <$-label1 (exp2)> <>0
errnz <offset $ - offset l x>
endm
;; If profile has been specified, declare the profile routines
;; to be external and far. It would be best if this could be done
;; when the call is actually made, but then the fix-up would be
;; generated as segment-relative.
ifdef ?PROFILE
externFP <StartNMeas,StopNMeas>
endif
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