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|
;++
;
;Copyright (c) 1991 Microsoft Corporation
;
;Module Name:
;
; debugmac.inc
;
;Abstract:
;
; Contains debugging macros:
;
; DbgBreakPoint
; DbgUnsupported
; DbgDEBUG
; DbgPrint
; DbgPrintTty
; DbgPrintString
; DbgPrintHexDword
; DbgPrintHexWord
; DbgPrintHexByte
; DbgPrintNearPointer
; DbgPrintFarPointer
;
;Author:
;
; Richard L Firth (rfirth) 13-Sep-1991
;
;Environment:
;
; DOS application mode only
;
;[Notes:]
;
; optional-notes
;
;Revision History:
;
; 13-Sep-1991 rfirth
; Created
;
;--
;*** DbgBreakPoint
;*
;* Same as NT routine of same name. No-op in non-DEBUG version
;*
;* ENTRY
;*
;* EXIT
;*
;* RETURNS
;*
;* ASSUMES
;*
;***
DbgBreakPoint macro
if DEBUG
int 3
endif
endm
;*** DbgUnsupported
;*
;* Causes the 32-bit support code to display a message about an unsupported
;* service code, and dumps the 16-bit registers. Used to discover when an
;* unsupported int 2f/11 call or int 21/5f call is being made
;*
;* ENTRY
;*
;* EXIT
;*
;* RETURNS
;*
;* ASSUMES
;*
;***
DbgUnsupported macro
if DEBUG
SVC -1
endif
endm
;*** DbgDEBUG
;*
;* Prints the string "DEBUG: " to console using Bios Int 10h/ah=0eh
;*
;* ENTRY nothing
;*
;* EXIT nothing
;*
;* USES ax
;*
;* ASSUMES 286+
;*
;***
DbgDEBUG macro
mov ax,(14 shl 8) + 'D'
int 10h
mov al,'E'
int 10h
mov al,'B'
int 10h
mov al,'U'
int 10h
mov al,'G'
int 10h
mov al,':'
int 10h
mov al,' '
int 10h
endm
;*** DbgCrLf
;*
;* Prints CR,LF to console using Bios Int 10h/ah=0eh
;*
;* ENTRY nothing
;*
;* EXIT nothing
;*
;* USES nothing
;*
;* ASSUMES 286+
;*
;***
DbgCrLf macro
push ax
mov ax,(14 shl 8) + 13
int 10h
mov al,10
int 10h
pop ax
endm
;*** DbgPrint
;*
;* Prints an ASCIZ string to console using Bios Int 10h
;*
;* ENTRY string - address of ASCIZ string to print
;*
;* EXIT nothing
;*
;* USES nothing
;*
;* ASSUMES 286+
;*
;***
DbgPrint macro string
if DEBUG ;; no macro if not debug version
pushf ;; save regs used by DbgPrintTty
push ax
push bx
push si
push ds
mov ax,seg string
mov ds,ax
mov si,offset string;; ds:si = address of string
DbgPrintTty ;; display it on console
pop ds
pop si
pop bx
pop ax
popf
endif
endm
;*** DbgPrintTty
;*
;* Prints an ASCIZ string in ds:si to console using Bios Int 10h
;*
;* ENTRY page - if present defines which Bios video page to use
;* Defaults to 0
;* ds:si - address of ASCIZ string to print
;*
;* EXIT nothing
;*
;* USES al, bh, si, flags
;*
;* ASSUMES 286+
;*
;***
DbgPrintTty macro page
local l1,l2
if DEBUG ;; no macro if not debug version
mov ah,14 ;; Bios Int write character as TTY function
ifb <page>
sub bh,bh
else
mov bh,page
endif
cld ;; autoincrement lodsb
l1: lodsb ;; al := next character; si := next character addr
or al,al ;; eof string?
jz l2 ;; yes
int 10h ;; display it to console
jmp short l1 ;; go round again
l2:
endif
endm
;*** DbgPrintString
;*
;* Prints a string to console using Bios Int 10h. Note that this macro
;* does not do printf style substitutions. The string "DEBUG: " will be
;* displayed if the banner parm is not blank
;*
;* ENTRY string - character string. Needn't be zero-terminated
;* banner - the "DEBUG: " banner will be printed if not blank
;*
;* EXIT nothing
;*
;* USES nothing
;*
;* ASSUMES 286+
;*
;***
DbgPrintString macro string, banner
local s1
local l1
if DEBUG ;; no macro if not debug version
jmp short l1
s1 db &string,0
l1: pushf ;; don't destroy direction flag
pusha ;; save gp regs
ifb <banner>
DbgDEBUG ;; Display "DEBUG: "
endif
push ds ;; save user's data seg
push cs
pop ds ;; ds == cs
mov si,offset cs:s1 ;; si := string offset
DbgPrintTty ;; display ds:si to console
pop ds ;; restore user's data seg
popa ;; restore gp regs
popf ;; restore direction flag+
endif
endm
;*** DbgPrintHexDword
;*
;* Prints a dword to console in hex notation using Bios Int 10h
;*
;* ENTRY dword - dword to print
;*
;* EXIT nothing
;*
;* USES nothing
;*
;* ASSUMES 286+
;*
;***
DbgPrintHexDword macro dword
if DEBUG ;; no macro if not debug version
DbgPrint <"DbgPrintHexDword not implemented yet",13,10>
endif
endm
;*** DbgPrintHexWord
;*
;* Prints a word to console in hex notation using Bios Int 10h
;*
;* ENTRY word - to print. Can be memory or register
;*
;* EXIT nothing
;*
;* USES nothing
;*
;* ASSUMES 286+
;*
;***
DbgPrintHexWord macro word
local l1, l2
if DEBUG ;; no macro if not debug version
pushf ;; don't use any registers
push ax
push cx
push dx
ifdifi <word>,<ax>
mov ax,word
endif
mov cx,4
l1: rol ax,4
mov dx,ax
and al,0fh
cmp al,9
jle l2
add al,'a'-('9'+1)
l2: add al,'0'
mov ah,14
int 10h
mov ax,dx
loop l1
pop dx
pop cx
pop ax
popf
endif
endm
;*** DbgPrintHexByte
;*
;* Prints a string to console using Bios Int 10h. Note that this macro
;* does not do printf style substitutions
;*
;* ENTRY string - character string. Needn't be zero-terminated
;*
;* EXIT
;*
;* USES nothing
;*
;* ASSUMES 286+
;*
;***
DbgPrintHexByte macro byte
if DEBUG ;; no macro if not debug version
DbgPrint <"DbgPrintHexByte not implemented yet",13,10>
endif
endm
DbgPrintNearPointer macro nearptr
endm
DbgPrintFarPointer macro farptr
endm
|
