Register-dumping routine; handy to add for debugging

1 files changed, 111 insertions, 0 deletions

diff --git a/regdump.inc b/regdump.inc
new file mode 100644
index 00000000..b9dce850
--- /dev/null
+++ b/regdump.inc
@@ -0,0 +1,111 @@
+;; $Id$
+;; -----------------------------------------------------------------------
+;;
+;;   Copyright 2003 H. Peter Anvin - All Rights Reserved
+;;
+;;   This program is free software; you can redistribute it and/or modify
+;;   it under the terms of the GNU General Public License as published by
+;;   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+;;   Bostom MA 02111-1307, USA; either version 2 of the License, or
+;;   (at your option) any later version; incorporated herein by reference.
+;;
+;; -----------------------------------------------------------------------
+
+;;
+;; regdump.inc
+;;
+;; Dump as much as possible of the register state; for debugging
+;;
+
+disk_dumpregs:
+	mov ah,02h
+	call dumpregs
+	int 13h
+	ret
+
+dumpregs:
+	push gs
+	push fs
+	push es
+	push ds
+	push ss
+	push cs
+	pushad
+	pushfd
+
+	push cs
+	pop ds
+
+	mov bp,sp
+	mov di,regnames
+
+	mov cx,9		; 9 32-bit registers
+.reg8:
+	mov si,[di]
+	inc di
+	inc di
+	call cwritestr
+	mov eax,[bp]
+	add bp,4
+	call writehex8
+	loop .reg8
+
+	mov cx,7		; 6 16-bit registers
+.reg4:
+	mov si,[di]
+	inc di
+	inc di
+	call cwritestr
+	mov eax,[bp]
+	inc bp
+	inc bp
+	call writehex4
+	loop .reg4
+
+	call crlf
+
+	popfd
+	popad
+	add sp,4		; Skip CS, SS
+	pop ds
+	pop es
+	pop fs
+	pop gs
+	ret
+
+regnames:
+	dw .eflags
+	dw .edi
+	dw .esi
+	dw .ebp
+	dw .esp
+	dw .ebx
+	dw .edx
+	dw .ecx
+	dw .eax
+	dw .cs
+	dw .ss
+	dw .ds
+	dw .es
+	dw .fs
+	dw .gs
+	dw .ip
+
+.eflags	db 'EFL: ', 0
+.edi	db 13,10,'EDI: ', 0
+.esi	db ' ESI: ', 0
+.ebp	db ' EBP: ', 0
+.esp	db ' ESP: ', 0
+.ebx	db 13,10,'EBX: ', 0
+.edx	db ' EDX: ', 0
+.ecx	db ' ECX: ', 0
+.eax	db ' EAX: ', 0
+.cs	db 13,10,'CS: ',0
+.ss	db ' SS: ',0
+.ds	db ' DS: ',0
+.es	db ' ES: ',0
+.fs	db ' FS: ',0
+.gs	db ' GS: ',0
+.ip	db ' IP: ',0
+
+