/* $OpenBSD: debug_i386.S,v 1.1 1997/04/01 04:52:46 mickey Exp $ */ /* * Copyright (c) 1997 Michael Shalayeff * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Michael Shalayeff. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #include #include #define _LOCORE #include #include #undef _LOCORE .data #ifndef NO_IDTR .align 3 .globl _Idtr_real _Idtr_real: .word 1024 .long 0 .align 3 .globl _Idtr_prot idt: .long 0, 0 _Idtr_prot: .word . - idt .long idt #endif .text ENTRY(check_regs) pushal # 8 ones pushl %ds pushl %es pushl %fs pushl %gs pushfl movl $0x10, %eax movl %ax, %ds movl $_reg, %edi cld movl 0xc*4(%esp), %eax; stosl # %eax movl 0xb*4(%esp), %eax; stosl # %ecx movl 0xa*4(%esp), %eax; stosl # %edx movl 0x9*4(%esp), %eax; stosl # %ebx movl 0x8*4(%esp), %eax; stosl # %esp movl 0x7*4(%esp), %eax; stosl # %ebp movl 0x6*4(%esp), %eax; stosl # %esi movl 0x5*4(%esp), %eax; stosl # %edi movl 0xd*4(%esp), %eax; stosl # %eip movl 0x0*4(%esp), %eax; stosl # %eflags movl 0xe*4(%esp), %eax; stosl # %cs movl %ss, %eax; stosl # %ss movl 0x4*4(%esp), %eax; stosl # %ds movl 0x3*4(%esp), %eax; stosl # %es movl 0x2*4(%esp), %eax; stosl # %fs movl 0x1*4(%esp), %eax; stosl # %gs call _C_LABEL(dump_regs) popfl popl %gs popl %fs popl %es popl %ds popal lret