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b332828c39
The generic hardware breakpoint interface provides an abstraction of hardware breakpoints in front of specific arch implementations for both kernel and user side breakpoints. This includes execution breakpoints and read/write breakpoints, also known as "watchpoints". This patch introduces header files containing constants, structure definitions and declaration of functions used by the hardware breakpoint core and x86 specific code. It also introduces an array based storage for the debug-register values in 'struct thread_struct', while modifying all users of debugreg<n> member in the structure. [ Impact: add headers for new hardware breakpoint interface ] Original-patch-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: K.Prasad <prasad@linux.vnet.ibm.com> Reviewed-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/* a.out coredump register dumper
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#ifndef _ASM_X86_A_OUT_CORE_H
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#define _ASM_X86_A_OUT_CORE_H
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#ifdef __KERNEL__
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#ifdef CONFIG_X86_32
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#include <linux/user.h>
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#include <linux/elfcore.h>
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/*
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* fill in the user structure for an a.out core dump
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*/
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static inline void aout_dump_thread(struct pt_regs *regs, struct user *dump)
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{
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/* changed the size calculations - should hopefully work better. lbt */
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dump->magic = CMAGIC;
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dump->start_code = 0;
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dump->start_stack = regs->sp & ~(PAGE_SIZE - 1);
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dump->u_tsize = ((unsigned long)current->mm->end_code) >> PAGE_SHIFT;
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dump->u_dsize = ((unsigned long)(current->mm->brk + (PAGE_SIZE - 1)))
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>> PAGE_SHIFT;
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dump->u_dsize -= dump->u_tsize;
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dump->u_ssize = 0;
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dump->u_debugreg[0] = current->thread.debugreg[0];
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dump->u_debugreg[1] = current->thread.debugreg[1];
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dump->u_debugreg[2] = current->thread.debugreg[2];
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dump->u_debugreg[3] = current->thread.debugreg[3];
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dump->u_debugreg[4] = 0;
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dump->u_debugreg[5] = 0;
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dump->u_debugreg[6] = current->thread.debugreg6;
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dump->u_debugreg[7] = current->thread.debugreg7;
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if (dump->start_stack < TASK_SIZE)
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dump->u_ssize = ((unsigned long)(TASK_SIZE - dump->start_stack))
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>> PAGE_SHIFT;
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dump->regs.bx = regs->bx;
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dump->regs.cx = regs->cx;
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dump->regs.dx = regs->dx;
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dump->regs.si = regs->si;
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dump->regs.di = regs->di;
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dump->regs.bp = regs->bp;
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dump->regs.ax = regs->ax;
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dump->regs.ds = (u16)regs->ds;
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dump->regs.es = (u16)regs->es;
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dump->regs.fs = (u16)regs->fs;
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dump->regs.gs = get_user_gs(regs);
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dump->regs.orig_ax = regs->orig_ax;
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dump->regs.ip = regs->ip;
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dump->regs.cs = (u16)regs->cs;
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dump->regs.flags = regs->flags;
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dump->regs.sp = regs->sp;
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dump->regs.ss = (u16)regs->ss;
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dump->u_fpvalid = dump_fpu(regs, &dump->i387);
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}
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#endif /* CONFIG_X86_32 */
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#endif /* __KERNEL__ */
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#endif /* _ASM_X86_A_OUT_CORE_H */
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