diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu')
-rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_mask.c | 35 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_nomask.c | 35 |
2 files changed, 2 insertions, 68 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_mask.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_mask.c index 0642e0b407..366c5fe935 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_mask.c +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_mask.c @@ -1,5 +1,5 @@ /* Procedure definition for FE_MASK_ENV for Linux/ppc. - Copyright (C) 2007 Free Software Foundation, Inc. + Copyright (C) 2007-2012 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 @@ -24,44 +24,11 @@ #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/fpu/fe_nomask.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_nomask.c index 2097af6548..86738fdd5a 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_nomask.c +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_nomask.c @@ -1,5 +1,5 @@ /* Procedure definition for FE_NOMASK_ENV for Linux/ppc. - Copyright (C) 2000, 2006, 2008 Free Software Foundation, Inc. + Copyright (C) 2000-2012 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 @@ -24,44 +24,11 @@ #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_nomask_handler (int signum, struct sigcontext *sc) -{ - sc->regs->msr |= 0x900ul; /* FE0 | FE1 */ - sigaction (SIGUSR1, &oact, NULL); -} -#endif - const fenv_t * __fe_nomask_env (void) { -#if __ASSUME_NEW_PRCTL_SYSCALL == 0 -# if defined PR_SET_FPEXC && defined PR_FP_EXC_PRECISE - int result = INLINE_SYSCALL (prctl, 2, PR_SET_FPEXC, PR_FP_EXC_PRECISE); - - if (result == -1 && errno == EINVAL) -# endif - { - struct sigaction act; - - act.sa_handler = (sighandler_t) fe_nomask_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_PRECISE); -#endif return FE_ENABLED_ENV; } |