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/* SPDX-License-Identifier: GPL-2.0-only */ /* * * 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); /* * 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 */
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