2013-11-28 Joseph Myers <joseph@codesourcery.com>
+ * sysdeps/powerpc/nofpu/atomic-feclearexcept.c: New file.
+ * sysdeps/powerpc/nofpu/atomic-feholdexcept.c: Likewise.
+ * sysdeps/powerpc/nofpu/atomic-feupdateenv.c: Likewise.
+ * sysdeps/powerpc/nofpu/flt-rounds.c: Likewise.
+ * sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feclearexcept.c:
+ Likewise.
+ * sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feholdexcept.c:
+ Likewise.
+ * sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feupdateenv.c:
+ Likewise.
+ * sysdeps/powerpc/powerpc32/e500/nofpu/flt-rounds.c: Likewise.
+ * sysdeps/powerpc/nofpu/Makefile [$(subdir) = soft-fp]
+ (sysdep_routines): Add atomic-feholdexcept, atomic-feclearexcept,
+ atomic-feupdateenv and flt-rounds.
+ * sysdeps/powerpc/nofpu/Versions (libc): Add
+ __atomic_feholdexcept, __atomic_feclearexcept,
+ __atomic_feupdateenv and __flt_rounds to GLIBC_2.19.
+ * sysdeps/powerpc/powerpc32/e500/nofpu/fenv_libc.h
+ (__feraiseexcept_soft): Declare and use libc_hidden_proto here.
+ * sysdeps/powerpc/powerpc32/e500/nofpu/fraiseexcept-soft.c
+ (__feraiseexcept_soft): Don't declare and use libc_hidden_proto
+ here.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/nptl/libc.abilist:
+ Update.
+
* manual/arith.texi (FP Exceptions): Document that exceptions may
not be raised when matherr is used.
(Math Error Reporting): Document overflow in directed rounding
ifeq ($(subdir),soft-fp)
sysdep_routines += $(gcc-single-routines) $(gcc-double-routines) \
- sim-full
+ sim-full atomic-feholdexcept atomic-feclearexcept \
+ atomic-feupdateenv flt-rounds
endif
ifeq ($(subdir),math)
__gtdf2; __gtsf2;
__ltdf2; __ltsf2;
}
+ GLIBC_2.19 {
+ __atomic_feholdexcept; __atomic_feclearexcept; __atomic_feupdateenv;
+ __flt_rounds;
+ }
GLIBC_PRIVATE {
__sim_exceptions_thread;
__sim_disabled_exceptions_thread;
--- /dev/null
+/* Clear floating-point exceptions for atomic compound assignment.
+ Copyright (C) 2013 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include "soft-fp.h"
+#include "soft-supp.h"
+
+void
+__atomic_feclearexcept (void)
+{
+ /* This function postdates the global variables being turned into
+ compat symbols, so no need to set them. */
+ __sim_exceptions_thread = 0;
+}
--- /dev/null
+/* Store current floating-point environment and clear exceptions for
+ atomic compound assignment.
+ Copyright (C) 2013 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include "soft-fp.h"
+#include "soft-supp.h"
+
+void
+__atomic_feholdexcept (fenv_t *envp)
+{
+ fenv_union_t u;
+
+ u.l[0] = __sim_exceptions_thread;
+ /* The rounding mode is not changed by arithmetic, so no need to
+ save it. */
+ u.l[1] = __sim_disabled_exceptions_thread;
+ *envp = u.fenv;
+
+ /* This function postdates the global variables being turned into
+ compat symbols, so no need to set them. */
+ __sim_exceptions_thread = 0;
+ __sim_disabled_exceptions_thread = FE_ALL_EXCEPT;
+}
--- /dev/null
+/* Install given floating-point environment and raise exceptions for
+ atomic compound assignment.
+ Copyright (C) 2013 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include "soft-fp.h"
+#include "soft-supp.h"
+#include <signal.h>
+
+void
+__atomic_feupdateenv (const fenv_t *envp)
+{
+ fenv_union_t u;
+ int saved_exceptions = __sim_exceptions_thread;
+
+ /* This function postdates the global variables being turned into
+ compat symbols, so no need to set them. */
+ u.fenv = *envp;
+ __sim_exceptions_thread |= u.l[0];
+ __sim_disabled_exceptions_thread = u.l[1];
+ if (saved_exceptions & ~__sim_disabled_exceptions_thread)
+ raise (SIGFPE);
+}
--- /dev/null
+/* Return current rounding mode as correct value for FLT_ROUNDS.
+ Copyright (C) 2013 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include "soft-fp.h"
+#include "soft-supp.h"
+
+int
+__flt_rounds (void)
+{
+ switch (__sim_round_mode_thread)
+ {
+ case FP_RND_ZERO:
+ return 0;
+ case FP_RND_NEAREST:
+ return 1;
+ case FP_RND_PINF:
+ return 2;
+ case FP_RND_MINF:
+ return 3;
+ default:
+ abort ();
+ }
+}
--- /dev/null
+/* Clear floating-point exceptions for atomic compound assignment.
+ e500 version.
+ Copyright (C) 2004-2013 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <fenv_libc.h>
+#include <stdlib.h>
+#include <sysdep.h>
+#include <sys/prctl.h>
+
+void
+__atomic_feclearexcept (void)
+{
+ unsigned int fpescr, old_fpescr;
+
+ /* Get the current state. */
+ old_fpescr = fpescr = fegetenv_register ();
+
+ /* Clear the relevant bits. */
+ fpescr &= ~SPEFSCR_ALL_EXCEPT;
+
+ /* Put the new state in effect. */
+ fesetenv_register (fpescr);
+
+ /* Let the kernel know if the "invalid" or "underflow" bit was
+ cleared. */
+ if (old_fpescr & (SPEFSCR_FINVS | SPEFSCR_FUNFS))
+ {
+ int pflags __attribute__ ((__unused__)), r;
+ INTERNAL_SYSCALL_DECL (err);
+
+ r = INTERNAL_SYSCALL (prctl, err, 2, PR_GET_FPEXC, &pflags);
+ if (INTERNAL_SYSCALL_ERROR_P (r, err))
+ abort ();
+ }
+}
--- /dev/null
+/* Store current floating-point environment and clear exceptions for
+ atomic compound assignment. e500 version.
+ Copyright (C) 2004-2013 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <fenv_libc.h>
+#include <stdlib.h>
+#include <sysdep.h>
+#include <sys/prctl.h>
+
+void
+__atomic_feholdexcept (fenv_t *envp)
+{
+ fenv_union_t u;
+ INTERNAL_SYSCALL_DECL (err);
+ int r;
+
+ /* Get the current state. */
+ r = INTERNAL_SYSCALL (prctl, err, 2, PR_GET_FPEXC, &u.l[0]);
+ if (INTERNAL_SYSCALL_ERROR_P (r, err))
+ abort ();
+
+ u.l[1] = fegetenv_register ();
+ *envp = u.fenv;
+
+ /* Clear everything except for the rounding mode and trapping to the
+ kernel. */
+ u.l[0] &= ~(PR_FP_EXC_DIV
+ | PR_FP_EXC_OVF
+ | PR_FP_EXC_UND
+ | PR_FP_EXC_RES
+ | PR_FP_EXC_INV);
+ u.l[1] &= SPEFSCR_FRMC | (SPEFSCR_ALL_EXCEPT_ENABLE & ~SPEFSCR_FINXE);
+
+ /* Put the new state in effect. */
+ fesetenv_register (u.l[1]);
+ r = INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC,
+ u.l[0] | PR_FP_EXC_SW_ENABLE);
+ if (INTERNAL_SYSCALL_ERROR_P (r, err))
+ abort ();
+}
--- /dev/null
+/* Install given floating-point environment and raise exceptions for
+ atomic compound assignment. e500 version.
+ Copyright (C) 2004-2013 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <fenv_libc.h>
+#include <stdlib.h>
+#include <sysdep.h>
+#include <sys/prctl.h>
+
+void
+__atomic_feupdateenv (const fenv_t *envp)
+{
+ int exc;
+ fenv_union_t u;
+ INTERNAL_SYSCALL_DECL (err);
+ int r;
+
+ /* Save the currently set exceptions. */
+ exc = fegetenv_register () & SPEFSCR_ALL_EXCEPT;
+
+ u.fenv = *envp;
+
+ fesetenv_register (u.l[1]);
+ r = INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC,
+ u.l[0] | PR_FP_EXC_SW_ENABLE);
+ if (INTERNAL_SYSCALL_ERROR_P (r, err))
+ abort ();
+
+ /* Raise (if appropriate) saved exceptions. */
+ __feraiseexcept_soft (exc);
+}
int __feraiseexcept_spe (int);
libm_hidden_proto (__feraiseexcept_spe)
+int __feraiseexcept_soft (int);
+libc_hidden_proto (__feraiseexcept_soft)
+
int __fexcepts_to_spe (int);
libm_hidden_proto (__fexcepts_to_spe)
--- /dev/null
+/* Return current rounding mode as correct value for FLT_ROUNDS. e500
+ version.
+ Copyright (C) 2013 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <fenv_libc.h>
+#include <stdlib.h>
+
+int
+__flt_rounds (void)
+{
+ switch (fegetenv_register () & SPEFSCR_FRMC)
+ {
+ case FE_TOWARDZERO:
+ return 0;
+ case FE_TONEAREST:
+ return 1;
+ case FE_UPWARD:
+ return 2;
+ case FE_DOWNWARD:
+ return 3;
+ default:
+ abort ();
+ }
+}
#include <fenv_libc.h>
#include <libc-symbols.h>
-int __feraiseexcept_soft (int);
-libc_hidden_proto (__feraiseexcept_soft)
-
#define __FERAISEEXCEPT_INTERNAL __feraiseexcept_soft
#include "spe-raise.c"
libc_hidden_def (__feraiseexcept_soft)
GLIBC_2.18
GLIBC_2.18 A
__cxa_thread_atexit_impl F
+GLIBC_2.19
+ GLIBC_2.19 A
+ __atomic_feclearexcept F
+ __atomic_feholdexcept F
+ __atomic_feupdateenv F
+ __flt_rounds F
GLIBC_2.2
GLIBC_2.2 A
_IO_adjust_wcolumn F
git://sourceware.org / glibc.git / commitdiff