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