You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
242 lines
4.2 KiB
242 lines
4.2 KiB
;++
|
|
;
|
|
;Copyright (c) 1991 Microsoft Corporation
|
|
;
|
|
;Module Name:
|
|
;
|
|
; asmmacro.inc
|
|
;
|
|
;Abstract:
|
|
;
|
|
; Contains macros to extend masm functionality:
|
|
;
|
|
; jmpc
|
|
; jmpnc
|
|
; jmpne
|
|
; jmps
|
|
; _mkjmp
|
|
;
|
|
;
|
|
;Author:
|
|
;
|
|
; Richard L Firth (rfirth) 24-Sep-1991
|
|
;
|
|
;Environment:
|
|
;
|
|
; DOS application mode only
|
|
;
|
|
;Revision History:
|
|
;
|
|
; 24-Sep-1991 rfirth
|
|
; Created
|
|
;
|
|
;--
|
|
|
|
|
|
|
|
DEFINED_BIT=020h
|
|
;ISDEFINED equ %(.type <thing> and DEFINED_BIT)
|
|
LABEL_DEFINED equ <(.type &label and DEFINED_BIT)>
|
|
|
|
DEBUG_MACROS = 0
|
|
;DEBUG_MACROS = 1
|
|
|
|
|
|
;*** jmpa
|
|
;*
|
|
;* jump to label if above. Label can be short (+129, -126 from
|
|
;* the first byte of the current jump instruction, if it is a short - ie
|
|
;* byte - jump) or near
|
|
;*
|
|
;* ENTRY label - to jump to
|
|
;*
|
|
;* EXIT nothing
|
|
;*
|
|
;* USES nothing
|
|
;*
|
|
;* ASSUMES 286+
|
|
;*
|
|
;***
|
|
|
|
jmpa macro label
|
|
_mkjmp ja,jna,&label
|
|
endm
|
|
|
|
;*** jmpc
|
|
;*
|
|
;* jump to label if below. Label can be short (+129, -126 from
|
|
;* the first byte of the current jump instruction, if it is a short - ie
|
|
;* byte - jump) or near
|
|
;*
|
|
;* ENTRY label - to jump to
|
|
;*
|
|
;* EXIT nothing
|
|
;*
|
|
;* USES nothing
|
|
;*
|
|
;* ASSUMES 286+
|
|
;*
|
|
;***
|
|
|
|
jmpb macro label
|
|
_mkjmp jb,jnb,&label
|
|
endm
|
|
|
|
;*** jmpc
|
|
;*
|
|
;* jump to label if carry flag set. Label can be short (+129, -126 from
|
|
;* the first byte of the current jump instruction, if it is a short - ie
|
|
;* byte - jump) or near
|
|
;*
|
|
;* ENTRY label - to jump to
|
|
;*
|
|
;* EXIT nothing
|
|
;*
|
|
;* USES nothing
|
|
;*
|
|
;* ASSUMES 286+
|
|
;*
|
|
;***
|
|
|
|
jmpc macro label
|
|
_mkjmp jc,jnc,&label
|
|
endm
|
|
|
|
|
|
|
|
;*** jmpnc
|
|
;*
|
|
;* jump to label if carry flag NOT set. Label can be short (+129, -126 from
|
|
;* the first byte of the current jump instruction, if it is a short - ie
|
|
;* byte - jump) or near
|
|
;*
|
|
;* ENTRY label - to jump to
|
|
;*
|
|
;* EXIT nothing
|
|
;*
|
|
;* USES nothing
|
|
;*
|
|
;* ASSUMES 286+
|
|
;*
|
|
;***
|
|
|
|
jmpnc macro label
|
|
_mkjmp jnc,jc,&label
|
|
endm
|
|
|
|
|
|
|
|
;*** jmpne
|
|
;*
|
|
;* jump to label if zero flag NOT set. Label can be short (+129, -126 from
|
|
;* the first byte of the current jump instruction, if it is a short - ie
|
|
;* byte - jump) or near
|
|
;*
|
|
;* ENTRY label - to jump to
|
|
;*
|
|
;* EXIT nothing
|
|
;*
|
|
;* USES nothing
|
|
;*
|
|
;* ASSUMES 286+
|
|
;*
|
|
;***
|
|
|
|
jmpne macro label
|
|
_mkjmp jne,je,&label
|
|
endm
|
|
|
|
|
|
|
|
;*** jmpe
|
|
;*
|
|
;* jump to label if zero flag set. Label can be short (+129, -126 from
|
|
;* the first byte of the current jump instruction, if it is a short - ie
|
|
;* byte - jump) or near
|
|
;*
|
|
;* ENTRY label - to jump to
|
|
;*
|
|
;* EXIT nothing
|
|
;*
|
|
;* USES nothing
|
|
;*
|
|
;* ASSUMES 286+
|
|
;*
|
|
;***
|
|
|
|
jmpe macro label
|
|
_mkjmp je,jne,&label
|
|
endm
|
|
|
|
|
|
|
|
;*** jmps
|
|
;*
|
|
;* jump to label. Label can be short (+129, -126 from
|
|
;* the first byte of the current jump instruction, if it is a short - ie
|
|
;* byte - jump) or near
|
|
;*
|
|
;* ENTRY label - to jump to
|
|
;*
|
|
;* EXIT nothing
|
|
;*
|
|
;* USES nothing
|
|
;*
|
|
;* ASSUMES 286+
|
|
;*
|
|
;***
|
|
|
|
jmps macro label
|
|
local dist
|
|
|
|
dist=&label-$
|
|
|
|
if DEBUG
|
|
jmp &label
|
|
else
|
|
if (.type label and DEFINED_BIT)
|
|
if ((dist gt 129) or (dist lt -126))
|
|
jmp &label
|
|
else
|
|
jmp short &label
|
|
endif
|
|
else
|
|
jmp &label
|
|
endif
|
|
endif
|
|
|
|
endm
|
|
|
|
|
|
|
|
;*** _mkjmp
|
|
;*
|
|
;* Make a jmp<?> macro. Generate instruction sequence for jump with or
|
|
;* without conditional test. Jump may be short (+127/-128 bytes) or near
|
|
;* (+32767/-32768 bytes)
|
|
;*
|
|
;* ENTRY is - short jump instruction
|
|
;* in - near jump instruction
|
|
;* label - to jump to
|
|
;*
|
|
;* EXIT nothing
|
|
;*
|
|
;* USES nothing
|
|
;*
|
|
;* ASSUMES 286+
|
|
;*
|
|
;***
|
|
|
|
_mkjmp macro is, in, label
|
|
local l
|
|
|
|
if DEBUG
|
|
&in l
|
|
jmp &label
|
|
else
|
|
&is &label
|
|
endif
|
|
|
|
l:
|
|
|
|
endm
|