[uClibc-cvs] uClibc/libc/sysdeps/linux/arm/bits armsigctx.h,NONE,1.1 atomicity.h,NONE,1.1 machine-gmon.h,NONE,1.1 profil-counter.h,NONE,1.1 sigcontextinfo.h,NONE,1.1 stackinfo.h,NONE,1.1
Erik Andersen
andersen at codepoet.org
Mon Mar 3 20:58:06 UTC 2003
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Update of /var/cvs/uClibc/libc/sysdeps/linux/arm/bits
In directory winder:/tmp/cvs-serv13798/libc/sysdeps/linux/arm/bits
Added Files:
armsigctx.h atomicity.h machine-gmon.h profil-counter.h
sigcontextinfo.h stackinfo.h
Log Message:
Initial effort at adding profiling support.
--- NEW FILE: armsigctx.h ---
/* 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 */
--- NEW FILE: atomicity.h ---
/* Low-level functions for atomic operations. ARM version.
Copyright (C) 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. */
#ifndef _ATOMICITY_H
#define _ATOMICITY_H 1
#include <inttypes.h>
static inline int
__attribute__ ((unused))
exchange_and_add (volatile uint32_t *mem, int val)
{
int tmp1;
int tmp2;
int result;
__asm__ ("\n"
"0:\tldr\t%0,[%3]\n\t"
"add\t%1,%0,%4\n\t"
"swp\t%2,%1,[%3]\n\t"
"cmp\t%0,%2\n\t"
"swpne\t%1,%2,[%3]\n\t"
"bne\t0b"
: "=&r" (result), "=&r" (tmp1), "=&r" (tmp2)
: "r" (mem), "r"(val)
: "cc", "memory");
return result;
}
static inline void
__attribute__ ((unused))
atomic_add (volatile uint32_t *mem, int val)
{
int tmp1;
int tmp2;
int tmp3;
__asm__ ("\n"
"0:\tldr\t%0,[%3]\n\t"
"add\t%1,%0,%4\n\t"
"swp\t%2,%1,[%3]\n\t"
"cmp\t%0,%2\n\t"
"swpne\t%1,%2,[%3]\n\t"
"bne\t0b"
: "=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3)
: "r" (mem), "r"(val)
: "cc", "memory");
}
static inline int
__attribute__ ((unused))
compare_and_swap (volatile long int *p, long int oldval, long int newval)
{
int result, tmp;
__asm__ ("\n"
"0:\tldr\t%1,[%2]\n\t"
"mov\t%0,#0\n\t"
"cmp\t%1,%4\n\t"
"bne\t1f\n\t"
"swp\t%0,%3,[%2]\n\t"
"cmp\t%1,%0\n\t"
"swpne\t%1,%0,[%2]\n\t"
"bne\t0b\n\t"
"mov\t%0,#1\n"
"1:"
: "=&r" (result), "=&r" (tmp)
: "r" (p), "r" (newval), "r" (oldval)
: "cc", "memory");
return result;
}
#endif /* atomicity.h */
--- NEW FILE: machine-gmon.h ---
/* Machine-dependent definitions for profiling support. ARM version.
Copyright (C) 1996, 1997, 1998 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. */
/* GCC for the ARM cannot compile __builtin_return_address(N) for N != 0,
so we must use an assembly stub. */
#include <sysdep.h>
#ifndef NO_UNDERSCORES
/* The asm symbols for C functions are `_function'.
The canonical name for the counter function is `mcount', no _. */
void _mcount (void) asm ("mcount");
#else
/* The canonical name for the function is `_mcount' in both C and asm,
but some old asm code might assume it's `mcount'. */
void _mcount (void);
weak_alias (_mcount, mcount)
#endif
static void mcount_internal (u_long frompc, u_long selfpc);
#define _MCOUNT_DECL(frompc, selfpc) \
static void mcount_internal (u_long frompc, u_long selfpc)
/* This macro/func MUST save r0, r1 because the compiler inserts
blind calls to _mount(), ignoring the fact that _mcount may
clobber registers; therefore, _mcount may NOT clobber registers */
/* if (this_fp!=0) {
r0 = this_fp
r1 = this_lr
r1 = [r1-4] which is caller's lr
if (r1!=0)
r1 = caller's lr
call mcount_internal(this_lr, caller's_lr)
}
*/
#define MCOUNT \
void _mcount (void) \
{ \
__asm__("stmdb sp!, {r0, r1, r2, r3};" \
"movs fp, fp;" \
"moveq r1, #0;" \
"ldrne r1, [fp, $-4];" \
"ldrne r0, [fp, $-12];" \
"movnes r0, r0;" \
"ldrne r0, [r0, $-4];" \
"movs r0, r0;" \
"blne mcount_internal;" \
"ldmia sp!, {r0, r1, r2, r3}"); \
}
--- NEW FILE: profil-counter.h ---
/* Low-level statistical profiling support function. Linux/ARM version.
Copyright (C) 1996, 1997, 1998 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. */
#include <signal.h>
#include <bits/armsigctx.h>
void
profil_counter (int signo, int _a2, int _a3, int _a4, union k_sigcontext sc)
{
void *pc;
if (sc.v20.magic == SIGCONTEXT_2_0_MAGIC)
pc = (void *) sc.v20.reg.ARM_pc;
else
pc = (void *) sc.v21.arm_pc;
profil_count (pc);
}
--- NEW FILE: sigcontextinfo.h ---
/* Copyright (C) 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Philip Blundell <philb at 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. */
#include <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))
--- NEW FILE: stackinfo.h ---
/* Copyright (C) 2001 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. */
/* This file contains a bit of information about the stack allocation
of the processor. */
#ifndef _STACKINFO_H
#define _STACKINFO_H 1
/* On Arm the stack grows down. */
#define _STACK_GROWS_DOWN 1
#endif /* stackinfo.h */
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