blob: 3225c3c0724b3642392bad7e9c395c9451afe555 [file] [log] [blame]
* 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, and Carsten Langgaard,
* Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
#include <linux/sched.h>
#include <asm/break.h>
#include <asm/thread_info.h>
#include <asm/inst.h>
#include <asm/local.h>
#include <asm/processor.h>
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);
do { \
preempt_disable(); \
__this_cpu_inc(fpuemustats.M); \
preempt_enable(); \
} while (0)
#define MIPS_FPU_EMU_INC_STATS(M) do { } while (0)
#endif /* CONFIG_DEBUG_FS */
extern int mips_dsemul(struct pt_regs *regs, mips_instruction ir,
unsigned long cpc);
extern int do_dsemulret(struct pt_regs *xcp);
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 mm_isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
unsigned long *contpc);
* Instruction inserted following the badinst to further tag the sequence
#define BD_COOKIE 0x0000bd36 /* tne $0, $0 with baggage */
* Break instruction with special math emu break code set
#define BREAK_MATH(micromips) (((micromips) ? 0x7 : 0xd) | (BRK_MEMU << 16))
#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);
#endif /* _ASM_FPU_EMULATOR_H */