diff options
Diffstat (limited to 'sysdeps/sparc')
| -rw-r--r-- | sysdeps/sparc/sparc32/atomicity.h | 98 | ||||
| -rw-r--r-- | sysdeps/sparc/sparc32/sparcv9/Makefile | 2 | ||||
| -rw-r--r-- | sysdeps/sparc/sparc32/sparcv9/atomicity.h | 82 | ||||
| -rw-r--r-- | sysdeps/sparc/sparc64/atomicity.h | 82 |
4 files changed, 263 insertions, 1 deletions
diff --git a/sysdeps/sparc/sparc32/atomicity.h b/sysdeps/sparc/sparc32/atomicity.h new file mode 100644 index 0000000000..9acf8ee1fc --- /dev/null +++ b/sysdeps/sparc/sparc32/atomicity.h @@ -0,0 +1,98 @@ +/* Low-level functions for atomic operations. Sparc32 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 int +__attribute__ ((unused)) +exchange_and_add (volatile uint32_t *mem, int val) +{ + static unsigned char lock; + int result, tmp; + + __asm__ __volatile__("1: ldstub [%1], %0\n\t" + " cmp %0, 0\n\t" + " bne 1b\n\t" + " nop" + : "=&r" (tmp) + : "r" (&lock) + : "memory"); + result = *mem; + *mem += val; + __asm__ __volatile__("stb %%g0, [%0]" + : /* no outputs */ + : "r" (&lock) + : "memory"); + return result; +} + +static void +__attribute__ ((unused)) +atomic_add (volatile uint32_t *mem, int val) +{ + static unsigned char lock; + int tmp; + + __asm__ __volatile__("1: ldstub [%1], %0\n\t" + " cmp %0, 0\n\t" + " bne 1b\n\t" + " nop" + : "=&r" (tmp) + : "r" (&lock) + : "memory"); + *mem += val; + __asm__ __volatile__("stb %%g0, [%0]" + : /* no outputs */ + : "r" (&lock) + : "memory"); +} + +static int +__attribute__ ((unused)) +compare_and_swap (volatile long int *p, long int oldval, long int newval) +{ + static unsigned char lock; + int ret, tmp; + + __asm__ __volatile__("1: ldstub [%1], %0\n\t" + " cmp %0, 0\n\t" + " bne 1b\n\t" + " nop" + : "=&r" (tmp) + : "r" (&lock) + : "memory"); + if (*p != oldval) + ret = 0; + else + { + *p = newval; + ret = 1; + } + __asm__ __volatile__("stb %%g0, [%0]" + : /* no outputs */ + : "r" (&lock) + : "memory"); + + return ret; +} + +#endif /* atomicity.h */ diff --git a/sysdeps/sparc/sparc32/sparcv9/Makefile b/sysdeps/sparc/sparc32/sparcv9/Makefile index 1d1a6c13c0..3fef30cc6e 100644 --- a/sysdeps/sparc/sparc32/sparcv9/Makefile +++ b/sysdeps/sparc/sparc32/sparcv9/Makefile @@ -1,4 +1,4 @@ -sysdep-CFLAGS += -mv8 -mtune=ultrasparc +sysdep-CFLAGS += -mv8 -mtune=ultrasparc -Wa,-Av9a ifeq ($(subst gnulib,string,$(subdir)),string) ASFLAGS-.o += -Wa,-Av9a diff --git a/sysdeps/sparc/sparc32/sparcv9/atomicity.h b/sysdeps/sparc/sparc32/sparcv9/atomicity.h new file mode 100644 index 0000000000..a8ca0cc249 --- /dev/null +++ b/sysdeps/sparc/sparc32/sparcv9/atomicity.h @@ -0,0 +1,82 @@ +/* Low-level functions for atomic operations. Sparc32+v9 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) +{ + uint32_t tmp1, tmp2; + + __asm__ __volatile__("1: lduw [%2], %0\n\t" + " add %0, %3, %1\n\t" + " cas [%2], %0, %1\n\t" + " sub %0, %1, %0\n\t" + " brnz,pn %0, 1b\n\t" + " nop" + : "=&r" (tmp1), "=&r" (tmp2) + : "r" (mem), "r" (val) + : "memory"); + return tmp2; +} + +static inline void +__attribute__ ((unused)) +atomic_add (volatile uint32_t *mem, int val) +{ + uint32_t tmp1, tmp2; + + __asm__ __volatile__("1: lduw [%2], %0\n\t" + " add %0, %3, %1\n\t" + " cas [%2], %0, %1\n\t" + " sub %0, %1, %0\n\t" + " brnz,pn %0, 1b\n\t" + " nop" + : "=&r" (tmp1), "=&r" (tmp2) + : "r" (mem), "r" (val) + : "memory"); +} + +static inline int +__attribute__ ((unused)) +compare_and_swap (volatile long int *p, long int oldval, long int newval) +{ + register long int tmp, tmp2; + + __asm__ __volatile__("1: lduw [%4], %0\n\t" + " mov %2, %1\n\t" + " cmp %0, %3\n\t" + " bne,a,pn %%xcc, 2f\n\t" + " mov 0, %0\n\t" + " cas [%4], %0, %1\n\t" + " sub %0, %1, %0\n\t" + " brnz,pn %0, 1b\n\t" + " mov 1, %0\n\t" + "2:" + : "=&r" (tmp), "=&r" (tmp2) + : "r" (newval), "r" (oldval), "r" (p) + : "memory"); + return tmp; +} + +#endif /* atomicity.h */ diff --git a/sysdeps/sparc/sparc64/atomicity.h b/sysdeps/sparc/sparc64/atomicity.h new file mode 100644 index 0000000000..33cf66623e --- /dev/null +++ b/sysdeps/sparc/sparc64/atomicity.h @@ -0,0 +1,82 @@ +/* Low-level functions for atomic operations. Sparc64 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) +{ + uint32_t tmp1, tmp2; + + __asm__ __volatile__("1: lduw [%2], %0\n\t" + " add %0, %3, %1\n\t" + " cas [%2], %0, %1\n\t" + " sub %0, %1, %0\n\t" + " brnz,pn %0, 1b\n\t" + " nop" + : "=&r" (tmp1), "=&r" (tmp2) + : "r" (mem), "r" (val) + : "memory"); + return tmp2; +} + +static inline void +__attribute__ ((unused)) +atomic_add (volatile uint32_t *mem, int val) +{ + uint32_t tmp1, tmp2; + + __asm__ __volatile__("1: lduw [%2], %0\n\t" + " add %0, %3, %1\n\t" + " cas [%2], %0, %1\n\t" + " sub %0, %1, %0\n\t" + " brnz,pn %0, 1b\n\t" + " nop" + : "=&r" (tmp1), "=&r" (tmp2) + : "r" (mem), "r" (val) + : "memory"); +} + +static inline int +__attribute__ ((unused)) +compare_and_swap (volatile long int *p, long int oldval, long int newval) +{ + register long int tmp, tmp2; + + __asm__ __volatile__("1: ldx [%4], %0\n\t" + " mov %2, %1\n\t" + " cmp %0, %3\n\t" + " bne,a,pn %%xcc, 2f\n\t" + " mov 0, %0\n\t" + " casx [%4], %0, %1\n\t" + " sub %0, %1, %0\n\t" + " brnz,pn %0, 1b\n\t" + " mov 1, %0\n\t" + "2:" + : "=&r" (tmp), "=&r" (tmp2) + : "r" (newval), "r" (oldval), "r" (p) + : "memory"); + return tmp; +} + +#endif /* atomicity.h */ |