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812 lines
20 KiB
812 lines
20 KiB
;***
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;cruntime.inc - multi-model assembly macros for interfacing to HLLs
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;
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; Copyright (c) 1988-2001, Microsoft Corporation. All rights reserved.
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;
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;Purpose:
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; This file defines the current memory model being used.
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;
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;Revision History:
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; 08-04-88 SJM Initial version to handle all four memory models
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; in 16-bit mode and small model in 32-bit mode
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; 08-08-88 JCR Added CPDIST, ?WIN, PCS, ISHIFT/LSHIFT, OS2,
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; DNPTR/DFPTR, DFLOAT/DDOUBLE/DLDOUBLE
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; 08-16-88 PHG Added FPES, LFPES, CBI, ZXAL, ZXBL, ZXCL, ZXDL
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; 08-17-88 JCR Added CAXDX, modified FPSIZE
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; 08-20-88 PHG Added diagnostic messages, removed 386 16-bit support
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; and 386 large code/data support, added mucho comments,
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; PSS now defined as es: only if SS_NEQ_GROUP defined
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; 08-24-88 JCR Added RBXSAVE and RBXONLY for use in 'proc uses'
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; 08-25-88 JCR Added savereg macro, removed rbxsave/rbxonly...
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; 08-26-88 GJF Added codeseg (text) macro
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; 09-15-88 JCR Corrected savelist/reglist macro to go with new MASM
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; 09-21-88 WAJ Added JS*, static*, global*, and label*, and lab macros
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; 09-22-88 JCR Change 'plm' to 'pascal' in label macro
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; 09-26-88 WAJ Added PUSH16 which will do a 16 bit push in a USE32 seg.
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; 09-28-88 WAJ Added CPWORD and DPWORD
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; 09-29-88 WAJ Added JMPFAR16 macro
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; 10-12-88 JCR Made PCS evaluate to 'cs:' for 16/32 stub testbed
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; 04-24-89 JCR Added 'assume seg:flat' for 386 to avoid masm/link bug
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; 05-25-89 GJF Added APIEXT, a macro that expands to the proper extrn
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; declaration for an API function
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; 06-13-89 JCR Added 'flat:' to DCPTR and DDPTR
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; 09-15-89 JCR Added DCPTR? and DDPTR?, always use "FLAT" not "flat"
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; 10-27-92 SKS Miscellaneous minor changes for MASM 6.10 compatibility
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; 09-06-94 CFW Replace MTHREAD with _MT.
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; 01-11-95 SKS Remove MASM 5.X support
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; 05-04-95 GJF Use .586 for Win32.
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;
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;*******************************************************************************
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;==============================================================================
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;
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;Use the following defines to control processor/segment model
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;
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; -DI86 8086/8088 processor
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; -DI286 80286 processor
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; -DI386 80386 processor with 32-bit code/data segment
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;
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; -Dmem_S Small memory model (near code, near data)
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; -Dmem_M Medium memory model (far code, near data)
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; -Dmem_C Compact memory model (near code, fat data)
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; -Dmem_L Large memory model (far code, far data)
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;
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; -DSS_NEQ_DGROUP SS and DS point to different segments
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;
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; default is -DI86 -Dmem_S
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;
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;==============================================================================
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;
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;The following variables are defined by this file:
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; cpu 86, 286, or 386
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; sizeC code distance; 1 = far code, 0 = near code
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; sizeD data distance; 1 = far data, 0 = near data
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; mmodel english name of the memory model, i.e. "Medium"
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; ISIZE, LSIZE, NSIZE size of ints, longs, shorts
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; FLTSIZE, DBLSIZE, LDBLSIZE size of float, double, long double
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; NPSIZE, FPSIZE size of near/far pointers
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; CPSIZE, DPSIZE size of code/data pointers
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; ISHIFT, LSHIFT bits to shift to convert byte to int/long
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;
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;The following macros allow easy writing of combined 16/32 bit code:
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;
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; 16/32 bit registers:
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; rax, rbx, rcx, rdx, expand to native registers (rax = eax or ax)
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; rsi, rdi, rsp, rbp
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; 16/32 bit register instructions:
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; JRCXZ jump when rcx is zero
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; CBI convert byte to int (al to rax)
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; CAXDX convert rax to rax:rdx
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; ZXAL, ZXBL, ZXCL, ZXDL zero extend al,bl,cl,dl to rax,rbx,rcx,rdx
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; Pointer instructions:
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; LPDS, LPES load data pointer with ES or DS
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; PDS, PES segment overrides when pointer loaded as above
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; PCS, PSS segment override to get at code/stack segment
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; LFPDS, LFPES load far pointer with ES or DS
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; FPDS, FPES segment overrides when pointer loaded as above
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; CPTR data type of code pointer
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; CPDIST distance of code (near/far)
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; DNPTR, DFPTR define near/far pointer
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; DCPTR, DDPTR define code/data pointer
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; DCPTR?, DDPTR? define uninitialized code/data pointer
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; CPWORD, DPWORD data type of code or data pointer
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; Numeric type instructions:
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; IWORD, LWORD, SWORD data type of int, long, short
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; DINT, DLONG, DSHORT define int, long, short
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; DFLOAT, DDOUBLE, DLDOUBLE define float, double, long double
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; Offsets:
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; codeoffset, dataoffset offsets from code and data segments
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; API calls:
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; APIDIST distance of API calls (near/far)
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; APIEXT ApiName extrn declaration for an API function
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;
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;The following utility macros are provided:
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; codeseg define/declare code segment
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; error <msg> stop assembly with message
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; display <msg> display a message, unless QUIET defined
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; savelist [<reg> ...] init list of regs to be save by 'proc uses'
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; _if cond <instruction> assemble instruction only if cond is TRUE
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; _ife cond <instruction> assemble instruction only if cond is FALSE
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; _ifd symbol <instruction> assemble instruction only if symbol defined
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; _ifnd symbol <instruction> assemble instruction only if symbol not defined
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;
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; lab LabelName assembles to "LabelName:" If DEBUG is defined
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; LabelName is made public
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;
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; JS* (ex. JSE,JSZ,JSB ...) assemble to "je short","jz short","jb short"
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;
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; Cmacro look alikes
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; static* Name, InitialValue, Repeat defines a static variable of type *
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; global* Name, InitialValue, Repeat defines a global variable of type *
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; label* Name, {PUBLIC,PASCAL,C} defines a label of type *
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;
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; PUSH16 SegmentReg pushes 16 bits in a use32 segment
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; JMPFAR16 label will do a far 16:16 jmp from a use32 segment
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;
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;==============================================================================
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; error <msg> - Output message and generate error
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error MACRO msg
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if2 ;; only on pass 2 can we generate errors
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%out **********************************************************
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%out *** E r r o r -- msg
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%out **********************************************************
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.err
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endif
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ENDM
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; display msg - Output message unless QUIET defined
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display MACRO msg
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ifndef QUIET ;; only when quiet flag not set
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if1 ;; and on pass 1, then display message
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%out msg
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endif
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endif
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ENDM
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; One line conditionals:
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; here we create the capability of writing code lines like
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;
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; _if sizeD <push ds> as opposed to if sizeD
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; push ds
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; endif
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_if MACRO cond,text
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if cond
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text
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endif
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ENDM
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_ife MACRO cond,text
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ife cond
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text
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endif
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ENDM
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_ifd MACRO cond,text
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ifdef cond
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text
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endif
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ENDM
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_ifnd MACRO cond,text
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ifndef cond
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text
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endif
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ENDM
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; set windows flag to 0
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?WIN equ 0 ; disable windows-specific code
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; check for _MT, requires 286 or greater processor
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ifdef _MT
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ifndef I386
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ifndef I286
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; _MT implies 286 processor
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display <Multi-thread specified - assuming 80286 processor>
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I286 equ <>
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endif
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endif
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endif
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; Process memory-model arguments
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ifdef mem_M
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; Medium model
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sizeC equ 1
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sizeD equ 0
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mmodel equ <Medium>
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elseifdef mem_C
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; Compact model
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sizeC equ 0
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sizeD equ 1
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mmodel equ <Compact>
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elseifdef mem_L
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; Large model
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sizeC equ 1
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sizeD equ 1
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mmodel equ <Large>
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else
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; Small model - default
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sizeC equ 0
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sizeD equ 0
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mmodel equ <Small>
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endif
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; Process processor arguments
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ifdef _WIN32
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display <Processor: 486/586>
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cpu equ 586
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.586
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elseifdef _POSIX_
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display <Processor: 486/586>
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cpu equ 586
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.586
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elseifdef I286
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display <Processor: 80286>
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cpu equ 286
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.286
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elseifdef I386
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display <Processor: 80386>
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cpu equ 386
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.386
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else
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display <Processor: 8086/8088>
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cpu equ 86
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.8086
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endif
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; 386 32-bit checking. Currently we are only expecting small model
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; 32 bit segments, so we make a few checks to be sure nothing is
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; incorrectly being defined.
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ifdef I386
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if sizeC or sizeD
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error <Must use Small memory model for 386 version.>
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endif
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ifdef _LOAD_DGROUP
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error <No loading DGROUP in 386 version.>
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endif
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ifdef SS_NEQ_DGROUP
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error <SS always equals DGROUP in 386 version.>
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endif
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endif
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; Set memory model
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% display <Memory model: mmodel>
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% .model mmodel, C
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;
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; *** Temporary Workaround ***
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; Currently, MASM will not recognize the 'FLAT' keyword unless it previously
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; appears in an 'assume' statement. Presumably, when the '.model FLAT' feature
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; is implemented, this will go away. [Use 'gs:' since we never use that
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; segment register.
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;
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ifdef I386
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; ensure that MASM recognizes 'FLAT'
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assume gs:FLAT
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endif
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; Define registers:
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; Instead of using the "word" registers directly, we will use a set of
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; text equates. This will allow you to use the native word size instead of
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; hard coded to 16 bit words. We also have some instruction equates for
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; instruction with the register type hard coded in.
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ifdef I386
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rax equ <eax>
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rbx equ <ebx>
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rcx equ <ecx>
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rdx equ <edx>
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rdi equ <edi>
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rsi equ <esi>
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rbp equ <ebp>
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rsp equ <esp>
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JRCXZ equ <jecxz>
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CBI equ <movsx eax, al> ; convert byte to int (al to rax)
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CAXDX equ <cdq> ; convert rax to rdx:rax
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ZXAL equ <movzx eax, al> ; zero extend al
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ZXBL equ <movzx ebx, bl> ; zero extend bl
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ZXCL equ <movzx ecx, cl> ; zero extend cl
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ZXDL equ <movzx edx, dl> ; zero extend dl
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else
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rax equ <ax>
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rbx equ <bx>
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rcx equ <cx>
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rdx equ <dx>
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rdi equ <di>
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rsi equ <si>
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rbp equ <bp>
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rsp equ <sp>
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JRCXZ equ <jcxz>
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CBI equ <cbw> ; convert byte to int (al to rax)
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CAXDX equ <cwd> ; convert rax to rdx:rax
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ZXAL equ <xor ah, ah> ; zero extend al
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ZXBL equ <xor bh, bh> ; zero extend bl
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ZXCL equ <xor ch, ch> ; zero extend cl
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ZXDL equ <xor dh, dh> ; zero extend dl
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endif
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; The following equates deal with the differences in near versus
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; far data pointers, and segment overrides.
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;
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; Use LPES and PES when loading a default size pointer -- it loads
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; a 16-bit pointer register in 286 Small/Medium model,
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; a 16-bit pointer register and 16-bit segment register in 8086/286
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; Compact/Large model, and a 32-bit pointer register in 386 mode.
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;
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; Use LFPES and FPES when loading an always far pointer -- it loads a
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; 16-bit pointer register and 16-bit segment register in 8086/286,
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; all models; a 32-bit pointer register in 386 mode.
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if sizeD
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LPES equ <les>
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LPDS equ <lds>
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PDS equ <ds:>
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PES equ <es:>
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else
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LPES equ <mov>
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LPDS equ <mov>
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PDS equ <>
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PES equ <>
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endif
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ifdef I386
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LFPES equ <mov>
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LFPDS equ <mov>
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FPES equ <>
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FPDS equ <>
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else
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LFPES equ <les>
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LFPDS equ <lds>
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FPES equ <es:>
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FPDS equ <ds:>
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endif
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if sizeC or @WordSize eq 2
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PCS equ <cs:> ; large code model or non-386
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else
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IF 1 ;*** TEMP 16/32 TESTBED ***
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PCS equ <cs:>
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ELSE
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PCS equ <> ; 386 small code model
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ENDIF ;*** END TEMP CODE
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endif
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ifdef SS_NEQ_DGROUP
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PSS equ <ss:> ; SS != DS
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else
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PSS equ <> ; SS == DS
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endif
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; Define offset macros:
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; The 32-bit segments will not have 'groups'
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ifdef I386
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codeoffset equ <offset FLAT:>
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dataoffset equ <offset FLAT:>
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else
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codeoffset equ <offset @code:>
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dataoffset equ <offset DGROUP:>
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endif
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; The next set of equates deals with the size of SHORTS, INTS, LONGS, and
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; pointers in the 16 and 32 bit versions.
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ifdef I386 ;--- 32 bit segment ---
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; parameters and locals
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IWORD equ <dword>
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LWORD equ <dword>
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; static storage
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DINT equ <dd>
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DLONG equ <dd>
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DSHORT equ <dw>
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; sizes for fixing SP, stepping through tables, etc.
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ISIZE equ 4
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LSIZE equ 4
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SSIZE equ 2
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NPSIZE equ 4
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FPSIZE equ 4
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; bit shift count to convert byte cnt/ptr to int/long cnt/ptr
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ISHIFT equ 2 ; byte-to-int shift count
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LSHIFT equ 2 ; byte-to-long shift count
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; sizes dependent upon memory model. dq -vs- df is not yet clear
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DNPTR equ <dd> ; near pointer
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DFPTR equ <dd> ; far pointer
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DCPTR equ <dd offset FLAT:>; 32 bit offset only
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DCPTR? equ <dd> ; No seg override for uninitialized values
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CPSIZE equ 4
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CPDIST equ <near> ; code pointers are near
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CPTR equ <near ptr>
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DDPTR equ <dd offset FLAT:>
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DDPTR? equ <dd>
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DPSIZE equ 4
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CPWORD equ <dword> ; code pointers are dwords
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DPWORD equ <dword> ; data pointers are dwords
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APIDIST equ <near> ; all API calls are NEAR in the 32 bit model
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; macro to declare API functions
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EXTAPI macro apiname
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extrn pascal apiname:near
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endm
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else ;--- 16-bit segment ---
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; parameters and locals
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IWORD equ <word>
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LWORD equ <dword>
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; static storage
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DINT equ <dw>
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DLONG equ <dd>
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DSHORT equ <dw>
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; sizes for fixing SP, stepping through tables, etc
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ISIZE equ 2
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LSIZE equ 4
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SSIZE equ 2
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NPSIZE equ 2
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FPSIZE equ 4
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; bit shift count to convert byte cnt/ptr to int/long cnt/ptr
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ISHIFT equ 1 ; byte-to-int shift count
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LSHIFT equ 2 ; byte-to-long shift count
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; sizes dependent upon memory model
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DNPTR equ <dw> ; near pointer
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DFPTR equ <dd> ; far pointer
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if sizeC
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DCPTR equ <dd> ; 16 bit segment and 16 bit offset
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DCPTR? equ <dd>
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CPSIZE equ 4
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CPDIST equ <far> ; code pointers are far
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CPTR equ <far ptr>
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CPWORD equ <dword> ; code pointers are dwords
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else
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DCPTR equ <dw> ; 16 bit offset only
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DCPTR? equ <dw>
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CPSIZE equ 2
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CPDIST equ <near> ; code pointers are near
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CPTR equ <near ptr>
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CPWORD equ <word> ; code pointers are words
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endif
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if sizeD
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DDPTR equ <dd>
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DDPTR? equ <dd>
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DPSIZE equ 4
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DPWORD equ <dword> ; data pointers are dwords
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else
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DDPTR equ <dw>
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DDPTR? equ <dw>
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DPSIZE equ 2
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DPWORD equ <word> ; data pointers are words
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endif
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APIDIST equ <far> ; API calls are FAR in 16 bit model
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; macro to declare API functions
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EXTAPI macro apiname
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extrn pascal apiname:far
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endm
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endif ; --- 16/32 segment ---
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; Float/double definitions
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; (currently the same for 16- and 32-bit segments)
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FLTSIZE equ 4 ; float
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DBLSIZE equ 8 ; double
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LDBLSIZE equ 10 ; long double
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DFLOAT equ <dd>
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DDOUBLE equ <dq>
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DLDOUBLE equ <dt>
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;
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; savelist - Generate a list of regs to be saved by the proc 'uses' option.
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;
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; Input:
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; reg1, reg2, reg3, reg4 = registers to be saved across function
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; Output:
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; reglist = text string of registers that can be passed to the 'uses'
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; option on the 'proc' command.
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;
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savelist MACRO reg1, reg2, reg3, reg4
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local ws, listsize
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ws catstr < > ; whitespace char
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IFNDEF I386
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rbx equ <> ; 8086/286 don't save rbx
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ENDIF
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IFNB <reg4>
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reglist catstr reg1, ws, reg2, ws, reg3, ws, reg4
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ELSEIFNB <reg3>
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reglist catstr reg1, ws, reg2, ws, reg3, ws
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ELSEIFNB <reg2>
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reglist catstr reg1, ws, reg2, ws, ws
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|
ELSEIFNB <reg1>
|
|
reglist catstr reg1, ws, ws, ws
|
|
ELSE
|
|
reglist catstr <>
|
|
ENDIF
|
|
|
|
listsize sizestr reglist ; size of register list
|
|
|
|
IF listsize LE 3 ; if list is only the 3 ws chars...
|
|
reglist catstr <>
|
|
ENDIF
|
|
|
|
IFNDEF I386
|
|
rbx equ <bx> ; restore rbx
|
|
ENDIF
|
|
|
|
ENDM ; savelist
|
|
|
|
;
|
|
; codeseg - Define/declare the standard code segment. Maps to the proper
|
|
; form of the .code directive.
|
|
;
|
|
; Input:
|
|
;
|
|
; Output:
|
|
; .code _TEXT ; for large code models
|
|
; .code ; for small code models
|
|
; assume cs:FLAT ; for 386
|
|
; assume ds:FLAT ; for 386
|
|
; assume es:FLAT ; for 386
|
|
; assume ss:FLAT ; for 386
|
|
;
|
|
|
|
codeseg MACRO
|
|
|
|
if sizeC
|
|
.code _TEXT
|
|
else
|
|
.code
|
|
endif
|
|
|
|
ifdef I386
|
|
assume ds:FLAT
|
|
assume es:FLAT
|
|
assume ss:FLAT
|
|
endif
|
|
|
|
ENDM
|
|
|
|
;*========
|
|
;*
|
|
;* Debug lab macro
|
|
;*
|
|
;*========
|
|
|
|
lab macro name
|
|
ifdef DEBUG
|
|
public pascal name ;; define label public for Symdeb
|
|
endif
|
|
name:
|
|
endm
|
|
|
|
|
|
;*========
|
|
;*
|
|
;* Conditional jump short macros
|
|
;*
|
|
;*========
|
|
|
|
|
|
irp x,<Z,NZ,E,NE,S,NS,C,NC,P,NP,PE,PO,A,AE,B,BE,NB,G,GE,L,LE>
|
|
JS&x equ <j&x short>
|
|
endm
|
|
|
|
|
|
;*========
|
|
;*
|
|
;* Global data definition macros
|
|
;*
|
|
;* Usage:
|
|
;* globalI Name, InitialValue, Repeat
|
|
;*
|
|
;*========
|
|
|
|
|
|
MakeGlobal macro suffix, DataType ;; makes all of the global* macros
|
|
|
|
global&suffix macro name, data, rep
|
|
public name
|
|
ifb <rep>
|
|
_repeat = 1
|
|
else
|
|
_repeat = (rep)
|
|
endif
|
|
|
|
name &DataType _repeat dup( data )
|
|
endm
|
|
|
|
endm
|
|
|
|
|
|
MakeGlobal T, dt ; globalT
|
|
MakeGlobal Q, dq ; globalQ
|
|
MakeGlobal D, dd ; globalD
|
|
MakeGlobal W, dw ; globalW
|
|
MakeGlobal B, db ; globalB
|
|
|
|
% MakeGlobal I, <DINT> ; globalI
|
|
|
|
% MakeGlobal DP, <DDPTR> ; globalDP
|
|
% MakeGlobal CP, <DCPTR> ; globalCP
|
|
% MakeGlobal FP, <DFPTR> ; globalFP
|
|
% MakeGlobal NP, <DNPTR> ; globalNP
|
|
|
|
|
|
|
|
;*========
|
|
;*
|
|
;* Static data definition macros
|
|
;*
|
|
;* Usage:
|
|
;* staticI Name, InitialValue, Repeat
|
|
;*
|
|
;*========
|
|
|
|
|
|
MakeStatic macro suffix, DataType ;; makes all of the static* macros
|
|
|
|
static&suffix macro name, data, rep
|
|
|
|
ifdef DEBUG
|
|
public pascal name ;; make statics public if DEBUG
|
|
endif
|
|
|
|
ifb <rep>
|
|
_repeat = 1
|
|
else
|
|
_repeat = (rep)
|
|
endif
|
|
|
|
name &DataType _repeat dup( data )
|
|
endm
|
|
|
|
endm
|
|
|
|
|
|
MakeStatic T, dt ; staticT
|
|
MakeStatic Q, dq ; staticQ
|
|
MakeStatic D, dd ; staticD
|
|
MakeStatic W, dw ; staticW
|
|
MakeStatic B, db ; staticB
|
|
|
|
% MakeStatic I, <DINT> ; staticI
|
|
|
|
% MakeStatic DP, <DDPTR> ; staticDP
|
|
% MakeStatic CP, <DCPTR> ; staticCP
|
|
% MakeStatic FP, <DFPTR> ; staticFP
|
|
% MakeStatic NP, <DNPTR> ; staticNP
|
|
|
|
;*========
|
|
;*
|
|
;* Label definition macros
|
|
;*
|
|
;*========
|
|
;*
|
|
;* Label definition macros
|
|
;*
|
|
;* Usage:
|
|
;* labelI Name, {PUBLIC, PASCAL, C}
|
|
;*
|
|
;*========
|
|
|
|
__MakePublic macro name, option ;; decides if a label should be
|
|
ifidni <option>, <PUBLIC> ;; made public
|
|
public name
|
|
elseifidni <option>, <PASCAL>
|
|
public pascal name
|
|
elseifidni <option>, <C>
|
|
public C name
|
|
elseifb <option>
|
|
ifdef DEBUG
|
|
public pascal name ;; make public if DEBUG
|
|
endif
|
|
endif
|
|
endm
|
|
|
|
|
|
MakeLabel macro suffix, LabelType ;; makes all of the label* macros
|
|
|
|
%@CatStr(<label>,<suffix>) macro name, option
|
|
__MakePublic <name>,<option>
|
|
name label &LabelType
|
|
endm
|
|
|
|
endm
|
|
|
|
|
|
MakeLabel T, tbyte ; make labelT
|
|
MakeLabel Q, qword ; make labelQ
|
|
MakeLabel D, dword ; make labelD
|
|
MakeLabel W, word ; make labelW
|
|
MakeLabel B, byte ; make labelB
|
|
|
|
MakeLabel P, proc ; make labelP
|
|
MakeLabel FP, far ; make labelFP
|
|
MakeLabel NP, near ; make labelNP
|
|
|
|
% MakeLabel I, IWORD ; make labelI
|
|
|
|
|
|
labelDP macro name, option ;; labelDP
|
|
__MakePublic <name>,<option>
|
|
ifdef I386
|
|
if sizeD
|
|
name label fword
|
|
else
|
|
name label dword
|
|
endif
|
|
else ;not I386
|
|
if sizeD
|
|
name label dword
|
|
else
|
|
name label word
|
|
endif
|
|
endif ;not I386
|
|
endm
|
|
|
|
labelCP macro name, option ;; labelCP
|
|
__MakePublic <name>,<option>
|
|
ifdef I386
|
|
if sizeC
|
|
name label fword
|
|
else
|
|
name label dword
|
|
endif
|
|
else ;not I386
|
|
if sizeC
|
|
name label dword
|
|
else
|
|
name label word
|
|
endif
|
|
endif ;not I386
|
|
endm
|
|
|
|
|
|
;*
|
|
;* PUSH16 SegReg - pushes 16 bits in a use32 segment
|
|
;*
|
|
|
|
PUSH16 macro SegReg
|
|
|
|
ifdef I386
|
|
nop
|
|
db 66h ; operand size over-ride
|
|
endif ; I386
|
|
|
|
push SegReg
|
|
endm
|
|
|
|
|
|
;*
|
|
;* JMPFAR16 label - jmps far from a use32 to a use16 segment
|
|
;*
|
|
|
|
JMPFAR16 macro label
|
|
|
|
ifndef I386
|
|
error <JMPFAR16 can only be used in a use32 code segment>
|
|
endif ;I386
|
|
|
|
nop
|
|
db 66h ;; operand size over-ride
|
|
db 0eah ;; jmp far immediate op code
|
|
dw offset label
|
|
dw seg label
|
|
endm
|