diff options
Diffstat (limited to 'sysdeps')
25 files changed, 256 insertions, 43 deletions
diff --git a/sysdeps/alpha/fpu/bits/mathinline.h b/sysdeps/alpha/fpu/bits/mathinline.h index a126dcf056..250171eeb4 100644 --- a/sysdeps/alpha/fpu/bits/mathinline.h +++ b/sysdeps/alpha/fpu/bits/mathinline.h @@ -137,11 +137,14 @@ __NTH (__isnan (double __x)) return isunordered (__x, __x); } +#ifndef __NO_LONG_DOUBLE_MATH __MATH_INLINE int __NTH (__isnanl (long double __x)) { return isunordered (__x, __x); } +#endif + #endif /* C99 */ #endif /* __NO_MATH_INLINES */ diff --git a/sysdeps/alpha/fpu/s_fmax.S b/sysdeps/alpha/fpu/s_fmax.S index 4f2ace7d11..d638eec805 100644 --- a/sysdeps/alpha/fpu/s_fmax.S +++ b/sysdeps/alpha/fpu/s_fmax.S @@ -53,6 +53,6 @@ weak_alias (__fmax, fmax) strong_alias (__fmax, __fmaxl) weak_alias (__fmaxl, fmaxl) #endif -#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) -compat_symbol (libm, __fmax, fmaxl, GLIBC_2_0); +#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1) +compat_symbol (libm, __fmax, fmaxl, GLIBC_2_1); #endif diff --git a/sysdeps/alpha/fpu/s_fmin.S b/sysdeps/alpha/fpu/s_fmin.S index 10de52940e..d70fab625a 100644 --- a/sysdeps/alpha/fpu/s_fmin.S +++ b/sysdeps/alpha/fpu/s_fmin.S @@ -53,6 +53,6 @@ weak_alias (__fmin, fmin) strong_alias (__fmin, __fminl) weak_alias (__fminl, fminl) #endif -#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) -compat_symbol (libm, __fmin, fminl, GLIBC_2_0); +#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1) +compat_symbol (libm, __fmin, fminl, GLIBC_2_1); #endif diff --git a/sysdeps/alpha/fpu/s_isnan.c b/sysdeps/alpha/fpu/s_isnan.c index 4403a50bb0..a9230329c5 100644 --- a/sysdeps/alpha/fpu/s_isnan.c +++ b/sysdeps/alpha/fpu/s_isnan.c @@ -53,6 +53,7 @@ weak_alias (__isnanf, isnanf) strong_alias (__isnan, __isnanl) weak_alias (__isnan, isnanl) #endif -#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) -compat_symbol (libm, __isnan, isnanl, GLIBC_2_0); +#if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0) +compat_symbol (libc, __isnan, __isnanl, GLIBC_2_0); +compat_symbol (libc, isnan, isnanl, GLIBC_2_0); #endif diff --git a/sysdeps/alpha/fpu/s_lrint.c b/sysdeps/alpha/fpu/s_lrint.c index 4c32f61093..1696408705 100644 --- a/sysdeps/alpha/fpu/s_lrint.c +++ b/sysdeps/alpha/fpu/s_lrint.c @@ -42,7 +42,7 @@ strong_alias (__lrint, __llrintl) weak_alias (__lrintl, lrintl) weak_alias (__llrintl, llrintl) #endif -#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) -compat_symbol (libm, __lrint, lrintl, GLIBC_2_0); -compat_symbol (libm, __llrint, llrintl, GLIBC_2_0); +#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1) +compat_symbol (libm, __lrint, lrintl, GLIBC_2_1); +compat_symbol (libm, __llrint, llrintl, GLIBC_2_1); #endif diff --git a/sysdeps/alpha/fpu/s_lround.c b/sysdeps/alpha/fpu/s_lround.c index bc5cb88ed2..0e0e98806c 100644 --- a/sysdeps/alpha/fpu/s_lround.c +++ b/sysdeps/alpha/fpu/s_lround.c @@ -42,7 +42,7 @@ strong_alias (__lround, __llroundl) weak_alias (__lroundl, lroundl) weak_alias (__llroundl, llroundl) #endif -#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) -compat_symbol (libm, __lround, lroundl, GLIBC_2_0); -compat_symbol (libm, __llround, llroundl, GLIBC_2_0); +#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1) +compat_symbol (libm, __lround, lroundl, GLIBC_2_1); +compat_symbol (libm, __llround, llroundl, GLIBC_2_1); #endif diff --git a/sysdeps/alpha/fpu/s_nearbyint.c b/sysdeps/alpha/fpu/s_nearbyint.c index 7a91bd115b..b18db8ba79 100644 --- a/sysdeps/alpha/fpu/s_nearbyint.c +++ b/sysdeps/alpha/fpu/s_nearbyint.c @@ -43,6 +43,6 @@ weak_alias (__nearbyint, nearbyint) strong_alias (__nearbyint, __nearbyintl) weak_alias (__nearbyint, nearbyintl) #endif -#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) -compat_symbol (libm, __nearbyint, nearbyintl, GLIBC_2_0); +#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1) +compat_symbol (libm, __nearbyint, nearbyintl, GLIBC_2_1); #endif diff --git a/sysdeps/alpha/fpu/s_round.c b/sysdeps/alpha/fpu/s_round.c index 3999e6110a..71763cf4ab 100644 --- a/sysdeps/alpha/fpu/s_round.c +++ b/sysdeps/alpha/fpu/s_round.c @@ -44,6 +44,6 @@ weak_alias (__round, round) strong_alias (__round, __roundl) weak_alias (__roundl, roundl) #endif -#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) -compat_symbol (libm, __round, roundl, GLIBC_2_0); +#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1) +compat_symbol (libm, __round, roundl, GLIBC_2_1); #endif diff --git a/sysdeps/alpha/fpu/s_trunc.c b/sysdeps/alpha/fpu/s_trunc.c index 1c1a66673f..11a279a53f 100644 --- a/sysdeps/alpha/fpu/s_trunc.c +++ b/sysdeps/alpha/fpu/s_trunc.c @@ -48,6 +48,6 @@ weak_alias (__trunc, trunc) strong_alias (__trunc, __truncl) weak_alias (__trunc, truncl) #endif -#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) -compat_symbol (libm, __trunc, truncl, GLIBC_2_0); +#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1) +compat_symbol (libm, __trunc, truncl, GLIBC_2_1); #endif diff --git a/sysdeps/ia64/fpu/fraiseexcpt.c b/sysdeps/ia64/fpu/fraiseexcpt.c index 3086ded812..12b29ee5a6 100644 --- a/sysdeps/ia64/fpu/fraiseexcpt.c +++ b/sysdeps/ia64/fpu/fraiseexcpt.c @@ -1,5 +1,6 @@ /* Raise given exceptions. - Copyright (C) 1997, 1998, 2000, 2001, 2002 Free Software Foundation, Inc. + Copyright (C) 1997, 1998, 2000, 2001, 2002, 2007 + Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Jes Sorensen <Jes.Sorensen@cern.ch>, 2000. @@ -70,7 +71,7 @@ feraiseexcept (int excepts) if (FE_INEXACT & excepts) { dummy = DBL_MAX; - __asm__ __volatile__ ("fadd.d.s0 %0=%1,f1" : "=f" (dummy) : "0" (dummy)); + __asm__ __volatile__ ("fsub.d.s0 %0=%1,f1" : "=f" (dummy) : "0" (dummy)); } /* Success. */ diff --git a/sysdeps/powerpc/bits/fenv.h b/sysdeps/powerpc/bits/fenv.h index 8509b4b0c3..10582a6ff6 100644 --- a/sysdeps/powerpc/bits/fenv.h +++ b/sysdeps/powerpc/bits/fenv.h @@ -137,9 +137,19 @@ extern const fenv_t __fe_nonieee_env; # define FE_NONIEEE_ENV (&__fe_nonieee_env) /* Floating-point environment with all exceptions enabled. Note that - just evaluating this value will set the processor into 'FPU - exceptions imprecise recoverable' mode, which may cause a significant - performance penalty (but have no other visible effect). */ + just evaluating this value does not change the processor exception mode. + Passing this mask to fesetenv will result in a prctl syscall to change + the MSR FE0/FE1 bits to "Precise Mode". On some processors this will + result in slower floating point execution. This will last until an + fenv or exception mask is installed that disables all FP exceptions. */ extern const fenv_t *__fe_nomask_env (void); -# define FE_NOMASK_ENV (__fe_nomask_env ()) +# define FE_NOMASK_ENV FE_ENABLED_ENV + +/* Floating-point environment with all exceptions disabled. Note that + just evaluating this value does not change the processor exception mode. + Passing this mask to fesetenv will result in a prctl syscall to change + the MSR FE0/FE1 bits to "Ignore Exceptions Mode". On most processors + this allows the fastest possible floating point execution.*/ +extern const fenv_t *__fe_mask_env (void); +# define FE_MASK_ENV FE_DFL_ENV #endif diff --git a/sysdeps/powerpc/fpu/Makefile b/sysdeps/powerpc/fpu/Makefile index d0fe4a8ba1..060c952d15 100644 --- a/sysdeps/powerpc/fpu/Makefile +++ b/sysdeps/powerpc/fpu/Makefile @@ -1,5 +1,5 @@ ifeq ($(subdir),math) -libm-support += fenv_const fe_nomask t_sqrt +libm-support += fenv_const fe_nomask fe_mask t_sqrt # libm needs ld.so to access dl_hwcap $(objpfx)libm.so: $(elfobjdir)/ld.so diff --git a/sysdeps/powerpc/fpu/fe_mask.c b/sysdeps/powerpc/fpu/fe_mask.c new file mode 100644 index 0000000000..d7ee5551ff --- /dev/null +++ b/sysdeps/powerpc/fpu/fe_mask.c @@ -0,0 +1,33 @@ +/* Procedure definition for FE_MASK_ENV. + Copyright (C) 2007 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 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 <fenv.h> +#include <errno.h> + +/* This is a generic stub. An OS specific override is required to clear + the FE0/FE1 bits in the MSR. MSR update is privileged, so this will + normally involve a syscall. */ + +const fenv_t * +__fe_mask_env(void) +{ + __set_errno (ENOSYS); + return FE_DFL_ENV; +} +stub_warning (__fe_mask_env) diff --git a/sysdeps/powerpc/fpu/fe_nomask.c b/sysdeps/powerpc/fpu/fe_nomask.c index ba45d85709..3cccee1d06 100644 --- a/sysdeps/powerpc/fpu/fe_nomask.c +++ b/sysdeps/powerpc/fpu/fe_nomask.c @@ -20,8 +20,9 @@ #include <fenv.h> #include <errno.h> -/* This is presently a stub, until it's decided how the kernels should - support this. */ +/* This is a generic stub. An OS specific override is required to set + the FE0/FE1 bits in the MSR. MSR update is privileged, so this will + normally involve a syscall. */ const fenv_t * __fe_nomask_env(void) diff --git a/sysdeps/powerpc/fpu/fedisblxcpt.c b/sysdeps/powerpc/fpu/fedisblxcpt.c index 633a6e6e36..3002b1b4cc 100644 --- a/sysdeps/powerpc/fpu/fedisblxcpt.c +++ b/sysdeps/powerpc/fpu/fedisblxcpt.c @@ -24,7 +24,7 @@ int fedisableexcept (int excepts) { fenv_union_t fe; - int result; + int result, new; result = fegetexcept (); @@ -44,7 +44,11 @@ fedisableexcept (int excepts) fe.l[1] &= ~(1 << (31 - FPSCR_VE)); fesetenv_register (fe.fenv); - if ((fegetexcept () & excepts) != 0) + new = fegetexcept (); + if (new == 0 && result != 0) + (void)__fe_mask_env (); + + if ((new & excepts) != 0) result = -1; return result; } diff --git a/sysdeps/powerpc/fpu/feholdexcpt.c b/sysdeps/powerpc/fpu/feholdexcpt.c index 150becd678..c9432248db 100644 --- a/sysdeps/powerpc/fpu/feholdexcpt.c +++ b/sysdeps/powerpc/fpu/feholdexcpt.c @@ -22,17 +22,24 @@ int feholdexcept (fenv_t *envp) { - fenv_union_t u; + fenv_union_t old, new; - /* Get the current state. */ - u.fenv = *envp = fegetenv_register (); + /* Save the currently set exceptions. */ + old.fenv = *envp = fegetenv_register (); - /* Clear everything except for the rounding mode and non-IEEE arithmetic + /* Clear everything except for the rounding modes and non-IEEE arithmetic flag. */ - u.l[1] = u.l[1] & 7; + new.l[1] = old.l[1] & 7; + new.l[0] = old.l[0]; + + /* If the old env had any eabled exceptions, then mask SIGFPE in the + MSR FE0/FE1 bits. This may allow the FPU to run faster because it + always takes the default action and can not generate SIGFPE. */ + if ((old.l[1] & 0x000000F8) != 0) + (void)__fe_mask_env (); /* Put the new state in effect. */ - fesetenv_register (u.fenv); + fesetenv_register (new.fenv); return 0; } diff --git a/sysdeps/powerpc/fpu/fesetenv.c b/sysdeps/powerpc/fpu/fesetenv.c index ff82dfd176..5a0c742ffe 100644 --- a/sysdeps/powerpc/fpu/fesetenv.c +++ b/sysdeps/powerpc/fpu/fesetenv.c @@ -1,5 +1,5 @@ /* Install given floating-point environment. - Copyright (C) 1997,99,2000,01,02 Free Software Foundation, Inc. + Copyright (C) 1997,99,2000,01,02,07 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 @@ -23,6 +23,26 @@ int __fesetenv (const fenv_t *envp) { + fenv_union_t old, new; + + /* get the currently set exceptions. */ + new.fenv = *envp; + old.fenv = fegetenv_register (); + + /* If the old env has no eabled exceptions and the new env has any enabled + exceptions, then unmask SIGFPE in the MSR FE0/FE1 bits. This will put + the hardware into "precise mode" and may cause the FPU to run slower on + some hardware. */ + if ((old.l[1] & 0x000000F8) == 0 && (new.l[1] & 0x000000F8) != 0) + (void)__fe_nomask_env (); + + /* If the old env had any eabled exceptions and the new env has no enabled + exceptions, then mask SIGFPE in the MSR FE0/FE1 bits. This may allow the + FPU to run faster because it always takes the default action and can not + generate SIGFPE. */ + if ((old.l[1] & 0x000000F8) != 0 && (new.l[1] & 0x000000F8) == 0) + (void)__fe_mask_env (); + fesetenv_register (*envp); /* Success. */ diff --git a/sysdeps/powerpc/fpu/feupdateenv.c b/sysdeps/powerpc/fpu/feupdateenv.c index 3a60d0f33d..5a4000f599 100644 --- a/sysdeps/powerpc/fpu/feupdateenv.c +++ b/sysdeps/powerpc/fpu/feupdateenv.c @@ -1,5 +1,5 @@ /* Install given floating-point environment and raise exceptions. - Copyright (C) 1997,99,2000,01 Free Software Foundation, Inc. + Copyright (C) 1997,99,2000,01,07 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -30,8 +30,24 @@ __feupdateenv (const fenv_t *envp) new.fenv = *envp; old.fenv = fegetenv_register (); - /* Copy the set exceptions from `old' to `new'. */ - new.l[1] = (new.l[1] & 0xE00000FF) | (old.l[1] & 0x1FFFFF00); + /* Restore rounding mode and exception enable from *envp and merge + exceptions. Leave fraction rounded/inexact and FP result/CC bits + unchanged. */ + new.l[1] = (old.l[1] & 0x1FFFFF00) | (new.l[1] & 0x1FF80FFF); + + /* If the old env has no eabled exceptions and the new env has any enabled + exceptions, then unmask SIGFPE in the MSR FE0/FE1 bits. This will put + the hardware into "precise mode" and may cause the FPU to run slower on + some hardware. */ + if ((old.l[1] & 0x000000F8) == 0 && (new.l[1] & 0x000000F8) != 0) + (void)__fe_nomask_env (); + + /* If the old env had any eabled exceptions and the new env has no enabled + exceptions, then mask SIGFPE in the MSR FE0/FE1 bits. This may allow the + FPU to run faster because it always takes the default action and can not + generate SIGFPE. */ + if ((old.l[1] & 0x000000F8) != 0 && (new.l[1] & 0x000000F8) == 0) + (void)__fe_mask_env (); /* Atomically enable and raise (if appropriate) exceptions set in `new'. */ fesetenv_register (new.fenv); diff --git a/sysdeps/s390/fpu/feholdexcpt.c b/sysdeps/s390/fpu/feholdexcpt.c index dee44dcee3..5631560bcd 100644 --- a/sysdeps/s390/fpu/feholdexcpt.c +++ b/sysdeps/s390/fpu/feholdexcpt.c @@ -1,5 +1,5 @@ /* Store current floating-point environment and clear exceptions. - Copyright (C) 2000, 2005 Free Software Foundation, Inc. + Copyright (C) 2000, 2005, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com). @@ -23,13 +23,14 @@ int feholdexcept (fenv_t *envp) { + fexcept_t fpc; /* Store the environment. */ fegetenv (envp); /* Clear the current sticky bits as more than one exception may be generated. */ - envp->fpc &= ~(FPC_FLAGS_MASK | FPC_DXC_MASK); + fpc = envp->fpc & ~(FPC_FLAGS_MASK | FPC_DXC_MASK); /* Hold from generating fpu exceptions temporarily. */ - _FPU_SETCW ((envp->fpc & ~(FE_ALL_EXCEPT << FPC_EXCEPTION_MASK_SHIFT))); + _FPU_SETCW ((fpc & ~(FE_ALL_EXCEPT << FPC_EXCEPTION_MASK_SHIFT))); return 0; } libm_hidden_def (feholdexcept) diff --git a/sysdeps/unix/sysv/linux/alpha/ioperm.c b/sysdeps/unix/sysv/linux/alpha/ioperm.c index 6c4115d1c8..32e96ec2f2 100644 --- a/sysdeps/unix/sysv/linux/alpha/ioperm.c +++ b/sysdeps/unix/sysv/linux/alpha/ioperm.c @@ -32,6 +32,11 @@ sparse address space would work (e.g., the Low Cost Alpha chip has an I/O address space that's 512MB large!). */ +/* Make sure the ldbu/stb asms below are not expaneded to macros. */ +#ifndef __alpha_bwx__ +asm(".arch ev56"); +#endif + #include <errno.h> #include <fcntl.h> #include <stdio.h> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_mask.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_mask.c new file mode 100644 index 0000000000..c2452c7bc5 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_mask.c @@ -0,0 +1,68 @@ +/* Procedure definition for FE_MASK_ENV for Linux/ppc. + Copyright (C) 2007 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 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 <fenv.h> +#include <errno.h> +#include <signal.h> +#include <unistd.h> +#include <sysdep.h> +#include <sys/prctl.h> +#include <kernel-features.h> + +#if __ASSUME_NEW_PRCTL_SYSCALL == 0 +/* This is rather fiddly under Linux. We don't have direct access, + and there is no system call, but we can change the bits + in a signal handler's context... */ + +static struct sigaction oact; + +static void +fe_mask_handler (int signum, struct sigcontext *sc) +{ + sc->regs->msr &= ~0x900ul; /* FE0 | FE1 */ + sigaction (SIGUSR1, &oact, NULL); +} +#endif + +const fenv_t * +__fe_mask_env (void) +{ +#if __ASSUME_NEW_PRCTL_SYSCALL == 0 +# if defined PR_SET_FPEXC && defined PR_FP_EXC_DISABLED + int result = INLINE_SYSCALL (prctl, 2, PR_SET_FPEXC, PR_FP_EXC_DISABLED); + + if (result == -1 && errno == EINVAL) +# endif + { + struct sigaction act; + + act.sa_handler = (sighandler_t) fe_mask_handler; + sigemptyset (&act.sa_mask); + act.sa_flags = 0; + + sigaction (SIGUSR1, &act, &oact); + raise (SIGUSR1); + } +#else + INTERNAL_SYSCALL_DECL (err); + INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC, PR_FP_EXC_DISABLED); +#endif + + return FE_DFL_ENV; +} diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fe_nomask.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_nomask.c index 8d3b9ad1f4..8d3b9ad1f4 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fe_nomask.c +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_nomask.c diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_mask.c b/sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_mask.c new file mode 100644 index 0000000000..4c31c63c5c --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_mask.c @@ -0,0 +1,43 @@ +/* Procedure definition for FE_MASK_ENV for Linux/ppc64. + Copyright (C) 2007 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 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 <fenv.h> +#include <errno.h> +#include <sysdep.h> +#include <sys/syscall.h> +#include <sys/prctl.h> +#include <kernel-features.h> + +const fenv_t * +__fe_mask_env (void) +{ +#if defined PR_SET_FPEXC && defined PR_FP_EXC_DISABLED + int result; + INTERNAL_SYSCALL_DECL (err); + result = INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC, PR_FP_EXC_DISABLED); +# ifndef __ASSUME_NEW_PRCTL_SYSCALL + if (INTERNAL_SYSCALL_ERROR_P (result, err) + && INTERNAL_SYSCALL_ERRNO (result, err) == EINVAL) + __set_errno (ENOSYS); +# endif +#else + __set_errno (ENOSYS); +#endif + return FE_DFL_ENV; +} diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/fe_nomask.c b/sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_nomask.c index 62f735514a..62f735514a 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/fe_nomask.c +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_nomask.c diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list index 38103f0c68..d1226ef82b 100644 --- a/sysdeps/unix/sysv/linux/syscalls.list +++ b/sysdeps/unix/sysv/linux/syscalls.list @@ -11,7 +11,7 @@ epoll_create EXTRA epoll_create i:i epoll_create epoll_ctl EXTRA epoll_ctl i:iiip epoll_ctl epoll_wait EXTRA epoll_wait Ci:ipii epoll_wait epoll_pwait EXTRA epoll_pwait Ci:ipiipi epoll_pwait -fdatasync - fdatasync i:i fdatasync +fdatasync - fdatasync Ci:i fdatasync flock - flock i:ii __flock flock fork - fork i: __libc_fork __fork fork get_kernel_syms EXTRA get_kernel_syms i:p get_kernel_syms |