mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 05:04:00 +08:00
f028b86056
While building the Malta defconfig, sparse spat the following warnings: >>>>>>>>>>>>>>>>>> arch/mips/math-emu/kernel_linkage.c:31:6: warning: symbol 'fpu_emulator_init_fpu' was not declared. Should it be static? arch/mips/math-emu/kernel_linkage.c:54:5: warning: symbol 'fpu_emulator_save_context' was not declared. Should it be static? arch/mips/math-emu/kernel_linkage.c:68:5: warning: symbol 'fpu_emulator_restore_context' was not declared. Should it be static? >>>>>>>>>>>>>>>>>> This patch fixes these errors by adding the proper prototypes to the include/asm-mips/fpu.h header, and actually using this header in the sparse-spotted source file. Build-tested with Malta defconfig. Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@movial.fi> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
116 lines
2.7 KiB
C
116 lines
2.7 KiB
C
/*
|
|
* Kevin D. Kissell, kevink@mips and Carsten Langgaard, carstenl@mips.com
|
|
* Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
|
|
*
|
|
* This program is free software; you can distribute it and/or modify it
|
|
* under the terms of the GNU General Public License (Version 2) as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
|
|
*
|
|
* Routines corresponding to Linux kernel FP context
|
|
* manipulation primitives for the Algorithmics MIPS
|
|
* FPU Emulator
|
|
*/
|
|
#include <linux/sched.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/signal.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
#include <asm/fpu.h>
|
|
#include <asm/fpu_emulator.h>
|
|
|
|
#define SIGNALLING_NAN 0x7ff800007ff80000LL
|
|
|
|
void fpu_emulator_init_fpu(void)
|
|
{
|
|
static int first = 1;
|
|
int i;
|
|
|
|
if (first) {
|
|
first = 0;
|
|
printk("Algorithmics/MIPS FPU Emulator v1.5\n");
|
|
}
|
|
|
|
current->thread.fpu.fcr31 = 0;
|
|
for (i = 0; i < 32; i++) {
|
|
current->thread.fpu.fpr[i] = SIGNALLING_NAN;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Emulator context save/restore to/from a signal context
|
|
* presumed to be on the user stack, and therefore accessed
|
|
* with appropriate macros from uaccess.h
|
|
*/
|
|
|
|
int fpu_emulator_save_context(struct sigcontext __user *sc)
|
|
{
|
|
int i;
|
|
int err = 0;
|
|
|
|
for (i = 0; i < 32; i++) {
|
|
err |=
|
|
__put_user(current->thread.fpu.fpr[i], &sc->sc_fpregs[i]);
|
|
}
|
|
err |= __put_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr);
|
|
|
|
return err;
|
|
}
|
|
|
|
int fpu_emulator_restore_context(struct sigcontext __user *sc)
|
|
{
|
|
int i;
|
|
int err = 0;
|
|
|
|
for (i = 0; i < 32; i++) {
|
|
err |=
|
|
__get_user(current->thread.fpu.fpr[i], &sc->sc_fpregs[i]);
|
|
}
|
|
err |= __get_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr);
|
|
|
|
return err;
|
|
}
|
|
|
|
#ifdef CONFIG_64BIT
|
|
/*
|
|
* This is the o32 version
|
|
*/
|
|
|
|
int fpu_emulator_save_context32(struct sigcontext32 __user *sc)
|
|
{
|
|
int i;
|
|
int err = 0;
|
|
|
|
for (i = 0; i < 32; i+=2) {
|
|
err |=
|
|
__put_user(current->thread.fpu.fpr[i], &sc->sc_fpregs[i]);
|
|
}
|
|
err |= __put_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr);
|
|
|
|
return err;
|
|
}
|
|
|
|
int fpu_emulator_restore_context32(struct sigcontext32 __user *sc)
|
|
{
|
|
int i;
|
|
int err = 0;
|
|
|
|
for (i = 0; i < 32; i+=2) {
|
|
err |=
|
|
__get_user(current->thread.fpu.fpr[i], &sc->sc_fpregs[i]);
|
|
}
|
|
err |= __get_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr);
|
|
|
|
return err;
|
|
}
|
|
#endif
|