Release 4.8 arch/mips/include/asm/fpu_emulator.h
/*
* 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.
*
* Further private data for which no space exists in mips_fpu_struct.
* This should be subsumed into the mips_fpu_struct structure as
* defined in processor.h as soon as the absurd wired absolute assembler
* offsets become dynamic at compile time.
*
* Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
* Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
*/
#ifndef _ASM_FPU_EMULATOR_H
#define _ASM_FPU_EMULATOR_H
#include <linux/sched.h>
#include <asm/dsemul.h>
#include <asm/thread_info.h>
#include <asm/inst.h>
#include <asm/local.h>
#include <asm/processor.h>
#ifdef CONFIG_DEBUG_FS
struct mips_fpu_emulator_stats {
unsigned long emulated;
unsigned long loads;
unsigned long stores;
unsigned long cp1ops;
unsigned long cp1xops;
unsigned long errors;
unsigned long ieee754_inexact;
unsigned long ieee754_underflow;
unsigned long ieee754_overflow;
unsigned long ieee754_zerodiv;
unsigned long ieee754_invalidop;
unsigned long ds_emul;
};
DECLARE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats);
#define MIPS_FPU_EMU_INC_STATS(M) \
do { \
preempt_disable(); \
__this_cpu_inc(fpuemustats.M); \
preempt_enable(); \
} while (0)
#else
#define MIPS_FPU_EMU_INC_STATS(M) do { } while (0)
#endif /* CONFIG_DEBUG_FS */
extern int fpu_emulator_cop1Handler(struct pt_regs *xcp,
struct mips_fpu_struct *ctx, int has_fpu,
void *__user *fault_addr);
int process_fpemu_return(int sig, void __user *fault_addr,
unsigned long fcr31);
int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
unsigned long *contpc);
int mm_isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
unsigned long *contpc);
#define SIGNALLING_NAN 0x7ff800007ff80000LL
static inline void fpu_emulator_init_fpu(void)
{
struct task_struct *t = current;
int i;
for (i = 0; i < 32; i++)
set_fpr64(&t->thread.fpu.fpr[i], 0, SIGNALLING_NAN);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ralf baechle | ralf baechle | 51 | 100.00% | 1 | 100.00% |
| Total | 51 | 100.00% | 1 | 100.00% |
#endif /* _ASM_FPU_EMULATOR_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ralf baechle | ralf baechle | 83 | 34.16% | 4 | 28.57% |
| leonid yegoshin | leonid yegoshin | 51 | 20.99% | 1 | 7.14% |
| david daney | david daney | 35 | 14.40% | 2 | 14.29% |
| christoph lameter | christoph lameter | 23 | 9.47% | 1 | 7.14% |
| paul burton | paul burton | 18 | 7.41% | 1 | 7.14% |
| linus torvalds | linus torvalds | 16 | 6.58% | 1 | 7.14% |
| deng-cheng zhu | deng-cheng zhu | 10 | 4.12% | 1 | 7.14% |
| maciej w. rozycki | maciej w. rozycki | 6 | 2.47% | 2 | 14.29% |
| atsushi nemoto | atsushi nemoto | 1 | 0.41% | 1 | 7.14% |
| Total | 243 | 100.00% | 14 | 100.00% |
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