projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * This program is free software; you can distribute it and/or modify it | |
| 3 | * under the terms of the GNU General Public License (Version 2) as | |
| 4 | * published by the Free Software Foundation. | |
| 5 | * | |
| 6 | * This program is distributed in the hope it will be useful, but WITHOUT | |
| 7 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 8 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 9 | * for more details. | |
| 10 | * | |
| 11 | * You should have received a copy of the GNU General Public License along | |
| 12 | * with this program; if not, write to the Free Software Foundation, Inc., | |
| 13 | * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
| 14 | * | |
| eae89076 AN |
15 | * Further private data for which no space exists in mips_fpu_struct. |
| 16 | * This should be subsumed into the mips_fpu_struct structure as | |
| 1da177e4 LT |
17 | * defined in processor.h as soon as the absurd wired absolute assembler |
| 18 | * offsets become dynamic at compile time. | |
| 19 | * | |
| 20 | * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com | |
| 21 | * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. | |
| 22 | */ | |
| 23 | #ifndef _ASM_FPU_EMULATOR_H | |
| 24 | #define _ASM_FPU_EMULATOR_H | |
| 25 | ||
| e0cc3a42 | 26 | #include <linux/sched.h> |
| 432c6bac | 27 | #include <asm/dsemul.h> |
| e0cc3a42 | 28 | #include <asm/thread_info.h> |
| ba3049ed | 29 | #include <asm/inst.h> |
| b6ee75ed | 30 | #include <asm/local.h> |
| e0cc3a42 | 31 | #include <asm/processor.h> |
| b6ee75ed DD |
32 | |
| 33 | #ifdef CONFIG_DEBUG_FS | |
| ba3049ed | 34 | |
| 4a99d1e2 | 35 | struct mips_fpu_emulator_stats { |
| d1cd39ad CL |
36 | unsigned long emulated; |
| 37 | unsigned long loads; | |
| 38 | unsigned long stores; | |
| 39 | unsigned long cp1ops; | |
| 40 | unsigned long cp1xops; | |
| 41 | unsigned long errors; | |
| 42 | unsigned long ieee754_inexact; | |
| 43 | unsigned long ieee754_underflow; | |
| 44 | unsigned long ieee754_overflow; | |
| 45 | unsigned long ieee754_zerodiv; | |
| 46 | unsigned long ieee754_invalidop; | |
| 2707cd29 | 47 | unsigned long ds_emul; |
| 1da177e4 LT |
48 | }; |
| 49 | ||
| b6ee75ed DD |
50 | DECLARE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats); |
| 51 | ||
| 52 | #define MIPS_FPU_EMU_INC_STATS(M) \ | |
| c948aca4 RB |
53 | do { \ |
| 54 | preempt_disable(); \ | |
| d1cd39ad | 55 | __this_cpu_inc(fpuemustats.M); \ |
| c948aca4 RB |
56 | preempt_enable(); \ |
| 57 | } while (0) | |
| b6ee75ed DD |
58 | |
| 59 | #else | |
| 60 | #define MIPS_FPU_EMU_INC_STATS(M) do { } while (0) | |
| 61 | #endif /* CONFIG_DEBUG_FS */ | |
| 0bd5d2e9 | 62 | |
| 102cedc3 LY |
63 | extern int fpu_emulator_cop1Handler(struct pt_regs *xcp, |
| 64 | struct mips_fpu_struct *ctx, int has_fpu, | |
| 65 | void *__user *fault_addr); | |
| 304acb71 MR |
66 | int process_fpemu_return(int sig, void __user *fault_addr, |
| 67 | unsigned long fcr31); | |
| 432c6bac PB |
68 | int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn, |
| 69 | unsigned long *contpc); | |
| 102cedc3 LY |
70 | int mm_isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn, |
| 71 | unsigned long *contpc); | |
| ba3049ed | 72 | |
| e0cc3a42 RB |
73 | #define SIGNALLING_NAN 0x7ff800007ff80000LL |
| 74 | ||
| 75 | static inline void fpu_emulator_init_fpu(void) | |
| 76 | { | |
| 77 | struct task_struct *t = current; | |
| 78 | int i; | |
| 79 | ||
| e0cc3a42 RB |
80 | for (i = 0; i < 32; i++) |
| 81 | set_fpr64(&t->thread.fpu.fpr[i], 0, SIGNALLING_NAN); | |
| 82 | } | |
| 83 | ||
| 1da177e4 | 84 | #endif /* _ASM_FPU_EMULATOR_H */ |