0daa050021
* sysdeps/hppa/dl-machine.h (elf_machine_fixup_plt): Remove lvalue cast. * sysdeps/hppa/dl-trampoline.S (_dl_fixup): Correct stack usage. (_dl_runtime_profile): LA fixups. * sysdeps/unix/sysv/linux/hppa/clone.S: Correct stack usage. Return -1 on error. Use branch and link for error handler funciton. * sysdeps/unix/sysv/linux/hppa/sysdep.h: Correct stack usage. Avoid register shuffling. * sysdeps/unix/sysv/linux/hppa/bits/atomic.h (ASM_EAGAIN): Define as -EAGAIN. * sysdeps/unix/sysv/linux/hppa/bits/mman.h: Adjust definitions to match required standards. * sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.h (lll_futex_wait): Return __ret. (lll_futex_timed_wait): Likewise. (lll_futex_wake): Likewise. (lll_futex_requeue): Likewise. * sysdeps/unix/sysv/linux/hppa/nptl/pt-vfork.S: Correct stack usage and adjust error return. * sysdeps/unix/sysv/linux/hppa/nptl/sysdep-cancel.h: Adjust stack usage for gdb, and avoid extra register loads. * sysdeps/unix/sysv/linux/hppa/nptl/unwind-forcedunwind.c: Copy nptl/sysdeps/pthread/unwind-forcedunwind.c. (LIBGCC_SO): Define and use. * sysdeps/unix/sysv/linux/hppa/nptl/unwind-resume.c: Copy nptl/sysdeps/pthread/unwind-resume.c. (LIBGCC_SO): Define and use.
121 lines
3.7 KiB
C
121 lines
3.7 KiB
C
/* Copyright (C) 2003 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Carlos O'Donell <carlos@baldric.uwo.ca>, 2005.
|
|
|
|
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 <stdint.h>
|
|
#include <sysdep.h>
|
|
#include <abort-instr.h>
|
|
#include <kernel-features.h>
|
|
|
|
/* We need EFAULT, ENONSYS, and EAGAIN */
|
|
#if !defined EFAULT && !defined ENOSYS && !defined EAGAIN
|
|
#undef EFAULT
|
|
#undef ENOSYS
|
|
#undef EAGAIN
|
|
#define EFAULT 14
|
|
#define ENOSYS 251
|
|
#define EAGAIN 11
|
|
#endif
|
|
|
|
#ifndef _BITS_ATOMIC_H
|
|
#define _BITS_ATOMIC_H 1
|
|
|
|
typedef int8_t atomic8_t;
|
|
typedef uint8_t uatomic8_t;
|
|
typedef int_fast8_t atomic_fast8_t;
|
|
typedef uint_fast8_t uatomic_fast8_t;
|
|
|
|
typedef int32_t atomic32_t;
|
|
typedef uint32_t uatomic32_t;
|
|
typedef int_fast32_t atomic_fast32_t;
|
|
typedef uint_fast32_t uatomic_fast32_t;
|
|
|
|
typedef intptr_t atomicptr_t;
|
|
typedef uintptr_t uatomicptr_t;
|
|
typedef intmax_t atomic_max_t;
|
|
typedef uintmax_t uatomic_max_t;
|
|
|
|
/* prev = *addr;
|
|
if (prev == old)
|
|
*addr = new;
|
|
return prev; */
|
|
|
|
/* Use the kernel atomic light weight syscalls on hppa */
|
|
#define LWS "0xb0"
|
|
#define LWS_CAS 0x0
|
|
/* Note r31 is the link register */
|
|
#define LWS_CLOBBER "r1", "r26", "r25", "r24", "r23", "r22", "r21", "r20", "r28", "r31", "memory"
|
|
#define ASM_EAGAIN -EAGAIN
|
|
|
|
#if __ASSUME_LWS_CAS
|
|
/* The only basic operation needed is compare and exchange. */
|
|
# define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
|
|
({ \
|
|
volatile int lws_errno = EFAULT; \
|
|
volatile int lws_ret = 0xdeadbeef; \
|
|
asm volatile( \
|
|
"0: \n\t" \
|
|
"copy %3, %%r26 \n\t" \
|
|
"copy %4, %%r25 \n\t" \
|
|
"copy %5, %%r24 \n\t" \
|
|
"ble " LWS "(%%sr2, %%r0) \n\t" \
|
|
"ldi 0, %%r20 \n\t" \
|
|
"cmpib,=,n " ASM_EAGAIN ",%%r21,0 \n\t" \
|
|
"nop \n\t" \
|
|
"stw %%r28, %0 \n\t" \
|
|
"sub %%r0, %%r21, %%r21 \n\t" \
|
|
"stw %%r21, %1 \n\t" \
|
|
: "=m" (lws_ret), "=m" (lws_errno), "=m" (*mem) \
|
|
: "r" (mem), "r" (oldval), "r" (newval) \
|
|
: LWS_CLOBBER \
|
|
); \
|
|
\
|
|
if(lws_errno == EFAULT || lws_errno == ENOSYS) \
|
|
ABORT_INSTRUCTION; \
|
|
\
|
|
lws_ret; \
|
|
})
|
|
|
|
# define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
|
|
({ \
|
|
int ret; \
|
|
ret = atomic_compare_and_exchange_val_acq(mem, newval, oldval); \
|
|
/* Return 1 if it was already acquired */ \
|
|
(ret != oldval); \
|
|
})
|
|
#else
|
|
/* Non-atomic primitives. */
|
|
# define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
|
|
({ __typeof (mem) __gmemp = (mem); \
|
|
__typeof (*mem) __gret = *__gmemp; \
|
|
__typeof (*mem) __gnewval = (newval); \
|
|
\
|
|
if (__gret == (oldval)) \
|
|
*__gmemp = __gnewval; \
|
|
__gret; })
|
|
|
|
# define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \
|
|
({ __typeof (mem) __gmemp = (mem); \
|
|
__typeof (*mem) __gnewval = (newval); \
|
|
\
|
|
*__gmemp == (oldval) ? (*__gmemp = __gnewval, 0) : 1; })
|
|
#endif
|
|
|
|
#endif /* bits/atomic.h */
|
|
|