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/* Copyright (C) 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Philip Blundell <philb@gnu.org>, 1999.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/* Definition of `struct sigcontext' for Linux/ARM
Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/* The format of struct sigcontext changed between 2.0 and 2.1 kernels.
Fortunately 2.0 puts a magic number in the first word and this is not
a legal value for `trap_no', so we can tell them apart. */
/* Early 2.2 and 2.3 kernels do not have the `fault_address' member in
the sigcontext structure. Unfortunately there is no reliable way
to test for its presence and this word will contain garbage for too-old
kernels. Versions 2.2.14 and 2.3.35 (plus later versions) are known to
include this element. */
#ifndef __ARMSIGCTX_H
#define __ARMSIGCTX_H 1
#include <asm/ptrace.h>
union k_sigcontext
{
struct
{
unsigned long int trap_no;
unsigned long int error_code;
unsigned long int oldmask;
unsigned long int arm_r0;
unsigned long int arm_r1;
unsigned long int arm_r2;
unsigned long int arm_r3;
unsigned long int arm_r4;
unsigned long int arm_r5;
unsigned long int arm_r6;
unsigned long int arm_r7;
unsigned long int arm_r8;
unsigned long int arm_r9;
unsigned long int arm_r10;
unsigned long int arm_fp;
unsigned long int arm_ip;
unsigned long int arm_sp;
unsigned long int arm_lr;
unsigned long int arm_pc;
unsigned long int arm_cpsr;
unsigned long fault_address;
} v21;
struct
{
unsigned long int magic;
struct pt_regs reg;
unsigned long int trap_no;
unsigned long int error_code;
unsigned long int oldmask;
} v20;
};
#define SIGCONTEXT_2_0_MAGIC 0x4B534154
#endif /* bits/armsigctx.h */
#define SIGCONTEXT int _a2, int _a3, int _a4, union k_sigcontext
#define SIGCONTEXT_EXTRA_ARGS _a2, _a3, _a4,
#define GET_PC(ctx) ((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \
ctx.v20.reg.ARM_pc : ctx.v21.arm_pc))
#define GET_FRAME(ctx) \
ADVANCE_STACK_FRAME((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \
ctx.v20.reg.ARM_fp : ctx.v21.arm_fp))
#define GET_STACK(ctx) ((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \
ctx.v20.reg.ARM_sp : ctx.v21.arm_sp))
#define ADVANCE_STACK_FRAME(frm) \
((struct layout *)frm - 1)
#define CALL_SIGHANDLER(handler, signo, ctx) \
(handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))
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