655c069718
1999-06-18 Thorsten Kukuk <kukuk@suse.de> * sysdeps/alpha/atomicity.h: Correct counting of subsections. 1999-06-17 Andreas Schwab <schwab@issan.cs.uni-dortmund.de> * stdlib/tst-strtoll.c: Avoid warning about huge constant. 1999-06-20 Andreas Schwab <schwab@issan.cs.uni-dortmund.de> * stdio-common/vfprintf.c (group_member): Make parameters and return types pointers to CHAR_T instead of UCHAR_T. (vfprintf): Change type of work_buffer, workend and string to CHAR_T pointer/array. (process_arg, process_string_arg): Adjust/remove casts. Add missing use of L_ macro. (printf_unknown): Add missing uses of L_ macro. 1999-06-20 Andreas Schwab <schwab@issan.cs.uni-dortmund.de> * wcsmbs/wcschrnul.c: Explicitly cast return value to avoid warning. 1999-06-20 Andreas Schwab <schwab@issan.cs.uni-dortmund.de> * libio/wgenops.c (__wuflow): Fix use of WEOF vs. EOF. Call _IO_switch_to_wget_mode instead of _IO_switch_to_get_mode. (__wunderflow): Likewise. (_IO_switch_to_wget_mode): Likewise. (_IO_init_wmarker): Likewise. * libio/wfileops.c (_IO_wfile_seekoff): Call _IO_switch_to_wget_mode, not _IO_switch_to_get_mode. (_IO_wfile_jumps): Fix pbackfail entry. * libio/iosetvbuf.c (_IO_setvbuf): Only call wide char setbuf function if the stream is currently unoriented. 1999-06-19 Zack Weinberg <zack@rabi.columbia.edu> * wcsmbs/wchar.h: Define __need___va_list before including stdarg.h. Wrap all wide stream functions with #ifdef __USE_ISOC9X. Use __gnuc_va_list in v*w(printf|scanf) prototypes. 1999-06-20 Andreas Jaeger <aj@arthur.rhein-neckar.de> * libio/oldiopopen.c (_IO_old_proc_open): Apply change from 1999-03-29 to iopopen also here. Reported by Richard Braakman <dark@xs4all.nl>. 1999-06-20 Andreas Jaeger <aj@arthur.rhein-neckar.de> * include/features.h: Use __GNUC_PREREQ. * sysdeps/i386/fpu/bits/mathinline.h: Likewise 1999-06-19 Andreas Schwab <schwab@issan.cs.uni-dortmund.de> * stdio-common/vfscanf.c (ungetc, inchar) [COMPILE_WPRINTF]: Change EOF to WEOF and remove cast. (UNGETC): Remove macro. (_IO_vfwscanf): Change isspace to ISSPACE and UNGETC to ungetc. * stdio-common/printf-parse.h (find_spec) [!COMPILE_WPRINTF]: Change ISASCII to isascii and MBRLEN to mbrlen. (parse_one_spec): Compare info.spec always against wchar_t values. * stdio-common/vfprintf.c: Remove unused ISASCII and MBRLEN. (_itoa, _itoa_word) [COMPILE_WRPINTF]: Don't cast second argument. (NOT_IN_JUMP_RANGE, CHAR_CLASS): Change (int) to (INT_T), use L_. 1999-06-19 Andreas Schwab <schwab@issan.cs.uni-dortmund.de> * libio/Makefile (shared-only-routines): Add oldiofgetpos, oldiofgetpos64, oldiofsetpos and oldiofsetpos64. (routines): Include oldiofgetpos, oldiofgetpos64, oldiofsetpos and oldiofsetpos64 only if doing versioning.
103 lines
2.3 KiB
C
103 lines
2.3 KiB
C
/* Low-level functions for atomic operations. Alpha version.
|
|
Copyright (C) 1999 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. 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)
|
|
{
|
|
register int result, tmp;
|
|
|
|
__asm__ __volatile__ (
|
|
"/* Inline exchange & add */\n"
|
|
"1:\t"
|
|
"ldl_l %0,%3\n\t"
|
|
"addl %0,%4,%1\n\t"
|
|
"stl_c %1,%2\n\t"
|
|
"beq %1,2f\n"
|
|
".subsection 1\n"
|
|
"2:\t"
|
|
"br 1b\n"
|
|
".previous\n\t"
|
|
"mb\n\t"
|
|
"/* End exchange & add */"
|
|
: "=&r"(result), "=&r"(tmp), "=m"(*mem)
|
|
: "m" (*mem), "r"(val));
|
|
|
|
return result;
|
|
}
|
|
|
|
static inline void
|
|
__attribute__ ((unused))
|
|
atomic_add (volatile uint32_t *mem, int val)
|
|
{
|
|
register int result;
|
|
|
|
__asm__ __volatile__ (
|
|
"/* Inline exchange & add */\n"
|
|
"1:\t"
|
|
"ldl_l %0,%2\n\t"
|
|
"addl %0,%3,%0\n\t"
|
|
"stl_c %0,%1\n\t"
|
|
"beq %0,2f\n\t"
|
|
".subsection 1\n"
|
|
"2:\t"
|
|
"br 1b\n"
|
|
".previous\n\t"
|
|
"mb\n\t"
|
|
"/* End exchange & add */"
|
|
: "=&r"(result), "=m"(*mem)
|
|
: "m" (*mem), "r"(val));
|
|
}
|
|
|
|
static inline long
|
|
__attribute__ ((unused))
|
|
compare_and_swap (volatile long int *p, long int oldval, long int newval)
|
|
{
|
|
long int ret;
|
|
|
|
__asm__ __volatile__ (
|
|
"/* Inline compare & swap */\n"
|
|
"1:\t"
|
|
"ldq_l %0,%4\n\t"
|
|
"cmpeq %0,%2,%0\n\t"
|
|
"beq %0,3f\n\t"
|
|
"mov %3,%0\n\t"
|
|
"stq_c %0,%1\n\t"
|
|
"beq %0,2f\n\t"
|
|
".subsection 1\n"
|
|
"2:\t"
|
|
"br 1b\n"
|
|
".previous\n\t"
|
|
"3:\t"
|
|
"mb\n\t"
|
|
"/* End compare & swap */"
|
|
: "=&r"(ret), "=m"(*p)
|
|
: "r"(oldval), "r"(newval), "m"(*p));
|
|
|
|
return ret;
|
|
}
|
|
|
|
#endif /* atomicity.h */
|