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Add femode_t functions: powerpc.

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This patch adds PowerPC versions of fegetmode and fesetmode.

	* sysdeps/powerpc/fpu/fegetmode.c: New file.
	* sysdeps/powerpc/fpu/fesetmode.c: Likewise.
	* sysdeps/powerpc/nofpu/fegetmode.c: Likewise.
	* sysdeps/powerpc/nofpu/fesetmode.c: Likewise.
	* sysdeps/powerpc/powerpc32/e500/nofpu/fegetmode.c: Likewise.
	* sysdeps/powerpc/powerpc32/e500/nofpu/fesetmode.c: Likewise.
This commit is contained in:
Joseph Myers
2016-09-07 16:46:47 +00:00
parent 997290d914
commit 9969e62e74
7 changed files with 229 additions and 0 deletions
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7
ChangeLog
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@@ -1,5 +1,12 @@
2016-09-07 Joseph Myers <joseph@codesourcery.com>
* sysdeps/powerpc/fpu/fegetmode.c: New file.
* sysdeps/powerpc/fpu/fesetmode.c: Likewise.
* sysdeps/powerpc/nofpu/fegetmode.c: Likewise.
* sysdeps/powerpc/nofpu/fesetmode.c: Likewise.
* sysdeps/powerpc/powerpc32/e500/nofpu/fegetmode.c: Likewise.
* sysdeps/powerpc/powerpc32/e500/nofpu/fesetmode.c: Likewise.
* sysdeps/mips/fpu/fegetmode.c: New file.
* sysdeps/mips/fpu/fesetmode.c: Likewise.

26
sysdeps/powerpc/fpu/fegetmode.c Normal file
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@@ -0,0 +1,26 @@
/* Store current floating-point control modes. PowerPC version.
Copyright (C) 2016 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>
int
fegetmode (femode_t *modep)
{
*modep = fegetenv_register ();
return 0;
}

49
sysdeps/powerpc/fpu/fesetmode.c Normal file
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@@ -0,0 +1,49 @@
/* Install given floating-point control modes. PowerPC version.
Copyright (C) 2016 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 <fpu_control.h>
#define _FPU_MASK_ALL (_FPU_MASK_ZM | _FPU_MASK_OM | _FPU_MASK_UM \
| _FPU_MASK_XM | _FPU_MASK_IM)
#define FPU_STATUS 0xbffff700ULL
int
fesetmode (const femode_t *modep)
{
fenv_union_t old, new;
/* Logic regarding enabled exceptions as in fesetenv. */
new.fenv = *modep;
old.fenv = fegetenv_register ();
new.l = (new.l & ~FPU_STATUS) | (old.l & FPU_STATUS);
if (old.l == new.l)
return 0;
if ((old.l & _FPU_MASK_ALL) == 0 && (new.l & _FPU_MASK_ALL) != 0)
(void) __fe_nomask_env_priv ();
if ((old.l & _FPU_MASK_ALL) != 0 && (new.l & _FPU_MASK_ALL) == 0)
(void) __fe_mask_env ();
fesetenv_register (new.fenv);
return 0;
}

33
sysdeps/powerpc/nofpu/fegetmode.c Normal file
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@@ -0,0 +1,33 @@
/* Store current floating-point control modes. PowerPC soft-float version.
Copyright (C) 2016 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
fegetmode (femode_t *modep)
{
fenv_union_t u;
u.l[0] = __sim_round_mode_thread;
u.l[1] = __sim_disabled_exceptions_thread;
*modep = u.fenv;
return 0;
}

34
sysdeps/powerpc/nofpu/fesetmode.c Normal file
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@@ -0,0 +1,34 @@
/* Install given floating-point control modes. PowerPC soft-float version.
Copyright (C) 2016 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
fesetmode (const femode_t *modep)
{
fenv_union_t u;
u.fenv = *modep;
__sim_round_mode_thread = u.l[0];
SIM_SET_GLOBAL (__sim_round_mode_global, __sim_round_mode_thread);
__sim_disabled_exceptions_thread = u.l[1];
SIM_SET_GLOBAL (__sim_disabled_exceptions_global,
__sim_disabled_exceptions_thread);
return 0;
}

37
sysdeps/powerpc/powerpc32/e500/nofpu/fegetmode.c Normal file
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@@ -0,0 +1,37 @@
/* Store current floating-point control modes. e500 version.
Copyright (C) 2016 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 <sysdep.h>
#include <sys/prctl.h>
int
fegetmode (femode_t *modep)
{
fenv_union_t u;
INTERNAL_SYSCALL_DECL (err);
int r;
r = INTERNAL_SYSCALL (prctl, err, 2, PR_GET_FPEXC, &u.l[0]);
if (INTERNAL_SYSCALL_ERROR_P (r, err))
return -1;
u.l[1] = fegetenv_register ();
*modep = u.fenv;
return 0;
}

43
sysdeps/powerpc/powerpc32/e500/nofpu/fesetmode.c Normal file
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@@ -0,0 +1,43 @@
/* Install given floating-point control modes. e500 version.
Copyright (C) 2016 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 <sysdep.h>
#include <sys/prctl.h>
#define SPEFSCR_STATUS 0xff3eff00
int
fesetmode (const femode_t *modep)
{
fenv_union_t u;
INTERNAL_SYSCALL_DECL (err);
int r;
u.fenv = *modep;
unsigned int spefscr = fegetenv_register ();
spefscr = (spefscr & SPEFSCR_STATUS) | (u.l[1] & ~SPEFSCR_STATUS);
fesetenv_register (spefscr);
r = INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC,
u.l[0] | PR_FP_EXC_SW_ENABLE);
if (INTERNAL_SYSCALL_ERROR_P (r, err))
return -1;
return 0;
}