Subject: Re: [ecasound] Re: report after compile.
From: raoul.megelas (raoul.megelas_AT_libertysurf.fr)
Date: Mon Jun 17 2002 - 12:24:36 EEST
On Sun, Jun 16, 2002 at 09:45:49PM +0300, you wrote:
> On Thu, 13 Jun 2002, raoul.megelas wrote:
>
> > ... segmentation fault, core dump.
> Could you issue the 'bt' command in gdb (to get the backtrace) and
> the send the output to me? From that I can see the call tree before
> reaching strncmp().
GNU gdb 4.18
(no debugging symbols found)...
Core was generated by `ecasound'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/lib/libncurses.so.5...(no debugging symbols found)...
done.
Reading symbols from /usr/local/lib/libecasound.so.7...
(no debugging symbols found)...done.
Reading symbols from /usr/local/lib/libkvutils.so.2...
(no debugging symbols found)...done.
Reading symbols from /usr/lib/libhistory.so.4...(no debugging symbols found)...
done.
Reading symbols from /usr/lib/libreadline.so.4...
(no debugging symbols found)...done.
Reading symbols from /usr/lib/compat/libdl.so.2...done.
Reading symbols from /usr/lib/libstdc++.so.3...done.
Reading symbols from /usr/lib/libm.so.2...done.
Reading symbols from /usr/lib/libc_r.so.4...done.
Reading symbols from /usr/lib/libc.so.6...done.
Reading symbols from /usr/lib/ld-linux.so.2...done.
Reading symbols from /usr/libexec/ld-elf.so.1...done.
#0 0x283739d3 in strncmp () from /usr/lib/libc_r.so.4
(gdb)
(gdb) bt
#0 0x283739d3 in strncmp () from /usr/lib/libc_r.so.4
#1 0x284ac48c in __DTOR_END__ () from /usr/lib/libc.so.6
#2 0x283d5ffa in _init (arg=0x280667ac)
at ../sysdeps/unix/sysv/linux/init-first.c:87
#3 0x28057a57 in find_symdef () from /usr/libexec/ld-elf.so.1
#4 0x28056910 in _rtld () from /usr/libexec/ld-elf.so.1
(gdb)
this happen on a box even with v2.04 from the port collection from
anarcat (which compiles quite well);
on another box, the cvs version produce the same behaviour and v2.04 no.
========================================
> Hmm, could you send the FBSD atomic.h file to me so I can have a look at
> it. It might have a completely different API than the Linux version. Even
> on Linux, use of 'asm/atomic.h' is not recommended, but it's the easiest
> way of getting atomic locking primivites for various platforms that Linux
> runs on. But as it isn't guaranteed to work, ecasound provides a
> pthread-based fallback.
No problem, but I take it in the source tree, because as you can see
there is two versions: one for alpha and one for i386.
Thanks for all your help.
raoul
raoul.megelas_AT_libertysurf.fr
========================================
src/sys/alpha/include/atomic.h
========================================
/*-
* Copyright (c) 1998 Doug Rabson
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR 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.
*
* $FreeBSD: src/sys/alpha/include/atomic.h,v 1.2 1999/08/28 00:38:40 peter Exp $
*/
#ifndef _MACHINE_ATOMIC_H_
#define _MACHINE_ATOMIC_H_
/*
* Various simple arithmetic on memory which is atomic in the presence
* of interrupts and SMP safe.
*/
void atomic_set_8(u_int8_t *, u_int8_t);
void atomic_clear_8(u_int8_t *, u_int8_t);
void atomic_add_8(u_int8_t *, u_int8_t);
void atomic_subtract_8(u_int8_t *, u_int8_t);
void atomic_set_16(u_int16_t *, u_int16_t);
void atomic_clear_16(u_int16_t *, u_int16_t);
void atomic_add_16(u_int16_t *, u_int16_t);
void atomic_subtract_16(u_int16_t *, u_int16_t);
void atomic_set_32(u_int32_t *, u_int32_t);
void atomic_clear_32(u_int32_t *, u_int32_t);
void atomic_add_32(u_int32_t *, u_int32_t);
void atomic_subtract_32(u_int32_t *, u_int32_t);
void atomic_set_64(u_int64_t *, u_int64_t);
void atomic_clear_64(u_int64_t *, u_int64_t);
void atomic_add_64(u_int64_t *, u_int64_t);
void atomic_subtract_64(u_int64_t *, u_int64_t);
#define atomic_set_char atomic_set_8
#define atomic_clear_char atomic_clear_8
#define atomic_add_char atomic_add_8
#define atomic_subtract_char atomic_subtract_8
#define atomic_set_short atomic_set_16
#define atomic_clear_short atomic_clear_16
#define atomic_add_short atomic_add_16
#define atomic_subtract_short atomic_subtract_16
#define atomic_set_int atomic_set_32
#define atomic_clear_int atomic_clear_32
#define atomic_add_int atomic_add_32
#define atomic_subtract_int atomic_subtract_32
#define atomic_set_long atomic_set_64
#define atomic_clear_long atomic_clear_64
#define atomic_add_long atomic_add_64
#define atomic_subtract_long atomic_subtract_64
#endif /* ! _MACHINE_ATOMIC_H_ */
========================================
src/sys/i386/include/atomic.h
/*-
* Copyright (c) 1998 Doug Rabson
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR 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.
*
* $FreeBSD: src/sys/i386/include/atomic.h,v 1.9.2.1 2000/07/07 00:38:47 obrien Exp $
*/
#ifndef _MACHINE_ATOMIC_H_
#define _MACHINE_ATOMIC_H_
/*
* Various simple arithmetic on memory which is atomic in the presence
* of interrupts and multiple processors.
*
* atomic_set_char(P, V) (*(u_char*)(P) |= (V))
* atomic_clear_char(P, V) (*(u_char*)(P) &= ~(V))
* atomic_add_char(P, V) (*(u_char*)(P) += (V))
* atomic_subtract_char(P, V) (*(u_char*)(P) -= (V))
*
* atomic_set_short(P, V) (*(u_short*)(P) |= (V))
* atomic_clear_short(P, V) (*(u_short*)(P) &= ~(V))
* atomic_add_short(P, V) (*(u_short*)(P) += (V))
* atomic_subtract_short(P, V) (*(u_short*)(P) -= (V))
*
* atomic_set_int(P, V) (*(u_int*)(P) |= (V))
* atomic_clear_int(P, V) (*(u_int*)(P) &= ~(V))
* atomic_add_int(P, V) (*(u_int*)(P) += (V))
* atomic_subtract_int(P, V) (*(u_int*)(P) -= (V))
*
* atomic_set_long(P, V) (*(u_long*)(P) |= (V))
* atomic_clear_long(P, V) (*(u_long*)(P) &= ~(V))
* atomic_add_long(P, V) (*(u_long*)(P) += (V))
* atomic_subtract_long(P, V) (*(u_long*)(P) -= (V))
*/
/*
* The above functions are expanded inline in the statically-linked
* kernel. Lock prefixes are generated if an SMP kernel is being
* built.
*
* Kernel modules call real functions which are built into the kernel.
* This allows kernel modules to be portable between UP and SMP systems.
*/
#if defined(KLD_MODULE)
#define ATOMIC_ASM(NAME, TYPE, OP, V) \
extern void atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v);
#else /* !KLD_MODULE */
#if defined(SMP)
#define MPLOCKED "lock ; "
#else
#define MPLOCKED
#endif
/*
* The assembly is volatilized to demark potential before-and-after side
* effects if an interrupt or SMP collision were to occur.
*/
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 9)
/* egcs 1.1.2+ version */
#define ATOMIC_ASM(NAME, TYPE, OP, V) \
static __inline void \
atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\
{ \
__asm __volatile(MPLOCKED OP \
: "=m" (*p) \
: "0" (*p), "ir" (V)); \
}
#else
/* gcc <= 2.8 version */
#define ATOMIC_ASM(NAME, TYPE, OP, V) \
static __inline void \
atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\
{ \
__asm __volatile(MPLOCKED OP \
: "=m" (*p) \
: "ir" (V)); \
}
#endif
#endif /* KLD_MODULE */
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 9)
/* egcs 1.1.2+ version */
ATOMIC_ASM(set, char, "orb %b2,%0", v)
ATOMIC_ASM(clear, char, "andb %b2,%0", ~v)
ATOMIC_ASM(add, char, "addb %b2,%0", v)
ATOMIC_ASM(subtract, char, "subb %b2,%0", v)
ATOMIC_ASM(set, short, "orw %w2,%0", v)
ATOMIC_ASM(clear, short, "andw %w2,%0", ~v)
ATOMIC_ASM(add, short, "addw %w2,%0", v)
ATOMIC_ASM(subtract, short, "subw %w2,%0", v)
ATOMIC_ASM(set, int, "orl %2,%0", v)
ATOMIC_ASM(clear, int, "andl %2,%0", ~v)
ATOMIC_ASM(add, int, "addl %2,%0", v)
ATOMIC_ASM(subtract, int, "subl %2,%0", v)
ATOMIC_ASM(set, long, "orl %2,%0", v)
ATOMIC_ASM(clear, long, "andl %2,%0", ~v)
ATOMIC_ASM(add, long, "addl %2,%0", v)
ATOMIC_ASM(subtract, long, "subl %2,%0", v)
#else
/* gcc <= 2.8 version */
ATOMIC_ASM(set, char, "orb %1,%0", v)
ATOMIC_ASM(clear, char, "andb %1,%0", ~v)
ATOMIC_ASM(add, char, "addb %1,%0", v)
ATOMIC_ASM(subtract, char, "subb %1,%0", v)
ATOMIC_ASM(set, short, "orw %1,%0", v)
ATOMIC_ASM(clear, short, "andw %1,%0", ~v)
ATOMIC_ASM(add, short, "addw %1,%0", v)
ATOMIC_ASM(subtract, short, "subw %1,%0", v)
ATOMIC_ASM(set, int, "orl %1,%0", v)
ATOMIC_ASM(clear, int, "andl %1,%0", ~v)
ATOMIC_ASM(add, int, "addl %1,%0", v)
ATOMIC_ASM(subtract, int, "subl %1,%0", v)
ATOMIC_ASM(set, long, "orl %1,%0", v)
ATOMIC_ASM(clear, long, "andl %1,%0", ~v)
ATOMIC_ASM(add, long, "addl %1,%0", v)
ATOMIC_ASM(subtract, long, "subl %1,%0", v)
#endif
#endif /* ! _MACHINE_ATOMIC_H_ */
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