| /* |
| * 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 branches; |
| 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; |
| |
| unsigned long abs_s; |
| unsigned long abs_d; |
| unsigned long add_s; |
| unsigned long add_d; |
| unsigned long bc1eqz; |
| unsigned long bc1nez; |
| unsigned long ceil_w_s; |
| unsigned long ceil_w_d; |
| unsigned long ceil_l_s; |
| unsigned long ceil_l_d; |
| unsigned long class_s; |
| unsigned long class_d; |
| unsigned long cmp_af_s; |
| unsigned long cmp_af_d; |
| unsigned long cmp_eq_s; |
| unsigned long cmp_eq_d; |
| unsigned long cmp_le_s; |
| unsigned long cmp_le_d; |
| unsigned long cmp_lt_s; |
| unsigned long cmp_lt_d; |
| unsigned long cmp_ne_s; |
| unsigned long cmp_ne_d; |
| unsigned long cmp_or_s; |
| unsigned long cmp_or_d; |
| unsigned long cmp_ueq_s; |
| unsigned long cmp_ueq_d; |
| unsigned long cmp_ule_s; |
| unsigned long cmp_ule_d; |
| unsigned long cmp_ult_s; |
| unsigned long cmp_ult_d; |
| unsigned long cmp_un_s; |
| unsigned long cmp_un_d; |
| unsigned long cmp_une_s; |
| unsigned long cmp_une_d; |
| unsigned long cmp_saf_s; |
| unsigned long cmp_saf_d; |
| unsigned long cmp_seq_s; |
| unsigned long cmp_seq_d; |
| unsigned long cmp_sle_s; |
| unsigned long cmp_sle_d; |
| unsigned long cmp_slt_s; |
| unsigned long cmp_slt_d; |
| unsigned long cmp_sne_s; |
| unsigned long cmp_sne_d; |
| unsigned long cmp_sor_s; |
| unsigned long cmp_sor_d; |
| unsigned long cmp_sueq_s; |
| unsigned long cmp_sueq_d; |
| unsigned long cmp_sule_s; |
| unsigned long cmp_sule_d; |
| unsigned long cmp_sult_s; |
| unsigned long cmp_sult_d; |
| unsigned long cmp_sun_s; |
| unsigned long cmp_sun_d; |
| unsigned long cmp_sune_s; |
| unsigned long cmp_sune_d; |
| unsigned long cvt_d_l; |
| unsigned long cvt_d_s; |
| unsigned long cvt_d_w; |
| unsigned long cvt_l_s; |
| unsigned long cvt_l_d; |
| unsigned long cvt_s_d; |
| unsigned long cvt_s_l; |
| unsigned long cvt_s_w; |
| unsigned long cvt_w_s; |
| unsigned long cvt_w_d; |
| unsigned long div_s; |
| unsigned long div_d; |
| unsigned long floor_w_s; |
| unsigned long floor_w_d; |
| unsigned long floor_l_s; |
| unsigned long floor_l_d; |
| unsigned long maddf_s; |
| unsigned long maddf_d; |
| unsigned long max_s; |
| unsigned long max_d; |
| unsigned long maxa_s; |
| unsigned long maxa_d; |
| unsigned long min_s; |
| unsigned long min_d; |
| unsigned long mina_s; |
| unsigned long mina_d; |
| unsigned long mov_s; |
| unsigned long mov_d; |
| unsigned long msubf_s; |
| unsigned long msubf_d; |
| unsigned long mul_s; |
| unsigned long mul_d; |
| unsigned long neg_s; |
| unsigned long neg_d; |
| unsigned long recip_s; |
| unsigned long recip_d; |
| unsigned long rint_s; |
| unsigned long rint_d; |
| unsigned long round_w_s; |
| unsigned long round_w_d; |
| unsigned long round_l_s; |
| unsigned long round_l_d; |
| unsigned long rsqrt_s; |
| unsigned long rsqrt_d; |
| unsigned long sel_s; |
| unsigned long sel_d; |
| unsigned long seleqz_s; |
| unsigned long seleqz_d; |
| unsigned long selnez_s; |
| unsigned long selnez_d; |
| unsigned long sqrt_s; |
| unsigned long sqrt_d; |
| unsigned long sub_s; |
| unsigned long sub_d; |
| unsigned long trunc_w_s; |
| unsigned long trunc_w_d; |
| unsigned long trunc_l_s; |
| unsigned long trunc_l_d; |
| }; |
| |
| 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); |
| void force_fcr31_sig(unsigned long fcr31, void __user *fault_addr, |
| struct task_struct *tsk); |
| 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); |
| } |
| |
| /* |
| * Mask the FCSR Cause bits according to the Enable bits, observing |
| * that Unimplemented is always enabled. |
| */ |
| static inline unsigned long mask_fcr31_x(unsigned long fcr31) |
| { |
| return fcr31 & (FPU_CSR_UNI_X | |
| ((fcr31 & FPU_CSR_ALL_E) << |
| (ffs(FPU_CSR_ALL_X) - ffs(FPU_CSR_ALL_E)))); |
| } |
| |
| #endif /* _ASM_FPU_EMULATOR_H */ |
