diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/alpha/atomicity.h | 102 | ||||
| -rw-r--r-- | sysdeps/alpha/fpu/s_floor.c | 11 | ||||
| -rw-r--r-- | sysdeps/alpha/fpu/s_floorf.c | 14 | ||||
| -rw-r--r-- | sysdeps/generic/elf/backtracesyms.c | 8 |
4 files changed, 118 insertions, 17 deletions
diff --git a/sysdeps/alpha/atomicity.h b/sysdeps/alpha/atomicity.h new file mode 100644 index 0000000..34a538f --- /dev/null +++ b/sysdeps/alpha/atomicity.h @@ -0,0 +1,102 @@ +/* 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 2\n" + "2:\t" + "br 1b\n" + ".subsection 1\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 2\n" + "2:\t" + "br 1b\n" + ".subsection 1\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 2\n" + "2:\t" + "br 1b\n" + ".subsection 1\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 */ diff --git a/sysdeps/alpha/fpu/s_floor.c b/sysdeps/alpha/fpu/s_floor.c index c7e1466..146e19b 100644 --- a/sysdeps/alpha/fpu/s_floor.c +++ b/sysdeps/alpha/fpu/s_floor.c @@ -17,18 +17,17 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#ifndef __USE_EXTERN_INLINES -#define __USE_EXTERN_INLINES -#endif -#define __floor __i_floor - #include <math.h> -#undef __floor + +/* Use the -inf rounding mode conversion instructions to implement + floor. We note when the exponent is large enough that the value + must be integral, as this avoids unpleasant integer overflows. */ double __floor (double x) { + /* Check not zero since floor(-0) == -0. */ if (x != 0 && fabs (x) < 9007199254740992.0) /* 1 << DBL_MANT_DIG */ { double __tmp1; diff --git a/sysdeps/alpha/fpu/s_floorf.c b/sysdeps/alpha/fpu/s_floorf.c index 7502b67..9e69364 100644 --- a/sysdeps/alpha/fpu/s_floorf.c +++ b/sysdeps/alpha/fpu/s_floorf.c @@ -17,14 +17,12 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#ifndef __USE_EXTERN_INLINES -#define __USE_EXTERN_INLINES -#endif -#define __floorf __i_floorf - #include <math.h> -#undef __floorf + +/* Use the -inf rounding mode conversion instructions to implement + floor. We note when the exponent is large enough that the value + must be integral, as this avoids unpleasant integer overflows. */ float __floorf (float x) @@ -37,7 +35,7 @@ __floorf (float x) convert back to S_Floating in the end. The initial conversion to T_Floating is needed to handle denormals. */ - float __tmp1, __tmp2; + float tmp1, tmp2; __asm ("cvtst/s %3,%2\n\t" #ifdef _IEEE_FP_INEXACT @@ -46,7 +44,7 @@ __floorf (float x) "cvttq/svm %2,%1\n\t" #endif "cvtqt/m %1,%0\n\t" - : "=f"(x), "=&f"(__tmp1), "=&f"(__tmp2) + : "=f"(x), "=&f"(tmp1), "=&f"(tmp2) : "f"(x)); } return x; diff --git a/sysdeps/generic/elf/backtracesyms.c b/sysdeps/generic/elf/backtracesyms.c index a14ac59..100d94a 100644 --- a/sysdeps/generic/elf/backtracesyms.c +++ b/sysdeps/generic/elf/backtracesyms.c @@ -1,5 +1,5 @@ /* Return list with names for address in backtrace. - Copyright (C) 1998 Free Software Foundation, Inc. + Copyright (C) 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. @@ -76,9 +76,11 @@ __backtrace_symbols (array, size) char buf[20]; if (array[cnt] >= (void *) info[cnt].dli_saddr) - sprintf (buf, "+0x%x", array[cnt] - info[cnt].dli_saddr); + sprintf (buf, "+%#lx", + (unsigned long)(array[cnt] - info[cnt].dli_saddr)); else - sprintf (buf, "-0x%x", info[cnt].dli_saddr - array[cnt]); + sprintf (buf, "-%#lx", + (unsigned long)(info[cnt].dli_saddr - array[cnt])); last += 1 + sprintf (last, "%s%s%s%s%s[%p]", info[cnt].dli_fname ?: "", |