/* $OpenBSD: cpu.h,v 1.67 2010/10/02 20:49:22 syuu Exp $ */ /*- * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Ralph Campbell and Rick Macklem. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Copyright (C) 1989 Digital Equipment Corporation. * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose and without fee is hereby granted, * provided that the above copyright notice appears in all copies. * Digital Equipment Corporation makes no representations about the * suitability of this software for any purpose. It is provided "as is" * without express or implied warranty. * * from: @(#)cpu.h 8.4 (Berkeley) 1/4/94 */ #ifndef _MIPS_CPU_H_ #define _MIPS_CPU_H_ #ifndef _LOCORE /* * MIPS32-style segment definitions. * They only cover the first 512MB of physical addresses. */ #define CKSEG0_BASE 0xffffffff80000000UL #define CKSEG1_BASE 0xffffffffa0000000UL #define CKSSEG_BASE 0xffffffffc0000000UL #define CKSEG3_BASE 0xffffffffe0000000UL #define CKSEG_SIZE 0x0000000020000000UL #define CKSEG0_TO_PHYS(x) ((u_long)(x) & (CKSEG_SIZE - 1)) #define CKSEG1_TO_PHYS(x) ((u_long)(x) & (CKSEG_SIZE - 1)) #define PHYS_TO_CKSEG0(x) ((u_long)(x) | CKSEG0_BASE) #define PHYS_TO_CKSEG1(x) ((u_long)(x) | CKSEG1_BASE) /* * MIPS64-style segment definitions. * These allow for 36 bits of addressable physical memory, thus 64GB. */ /* * Cache Coherency Attributes. */ /* r8k only */ #define CCA_NC_COPROCESSOR 0UL /* uncached, coprocessor ordered */ /* common to r4, r5k, r8k and r1xk */ #define CCA_NC 2UL /* uncached, write-around */ #define CCA_NONCOHERENT 3UL /* cached, non-coherent, write-back */ /* r8k, r1xk only */ #define CCA_COHERENT_EXCL 4UL /* cached, coherent, exclusive */ #define CCA_COHERENT_EXCLWRITE 5UL /* cached, coherent, exclusive write */ /* r1xk only */ #define CCA_NC_ACCELERATED 7UL /* uncached accelerated */ /* r4k only */ #define CCA_COHERENT_UPDWRITE 6UL /* cached, coherent, update on write */ #ifdef TGT_COHERENT #define CCA_CACHED CCA_COHERENT_EXCLWRITE #else #define CCA_CACHED CCA_NONCOHERENT #endif /* * Uncached spaces. * R1x000 processors use bits 58:57 of uncached virtual addresses (CCA_NC) * to select different spaces. Unfortunately, other processors need these * bits to be zero, so uncached address have to be decided at runtime. */ #define SP_HUB 0UL /* Hub space */ #define SP_IO 1UL /* I/O space */ #define SP_SPECIAL 2UL /* Memory Special space */ #define SP_NC 3UL /* Memory Uncached space */ extern vaddr_t uncached_base; #define XKSSSEG_BASE 0x4000000000000000UL #define XKPHYS_BASE 0x8000000000000000UL #define XKSSEG_BASE 0xc000000000000000UL #define XKPHYS_TO_PHYS(x) ((paddr_t)(x) & 0x0000000fffffffffUL) #define PHYS_TO_XKPHYS(x,c) ((paddr_t)(x) | XKPHYS_BASE | ((c) << 59)) #define PHYS_TO_XKPHYS_UNCACHED(x,s) \ (PHYS_TO_XKPHYS(x, CCA_NC) | ((s) << 57)) #define PHYS_TO_UNCACHED(x) ((paddr_t)(x) | uncached_base) #define IS_XKPHYS(va) (((va) >> 62) == 2) #define XKPHYS_TO_CCA(x) (((x) >> 59) & 0x07) #define XKPHYS_TO_SP(x) (((x) >> 57) & 0x03) #endif /* _LOCORE */ #if defined(_KERNEL) || defined(_STANDALONE) /* * Status register. */ #define SR_XX 0x80000000 #define SR_COP_USABILITY 0x30000000 /* CP0 and CP1 only */ #define SR_COP_0_BIT 0x10000000 #define SR_COP_1_BIT 0x20000000 #define SR_RP 0x08000000 #define SR_FR_32 0x04000000 #define SR_RE 0x02000000 #define SR_DSD 0x01000000 /* Only on R12000 */ #define SR_BOOT_EXC_VEC 0x00400000 #define SR_TLB_SHUTDOWN 0x00200000 #define SR_SOFT_RESET 0x00100000 #define SR_DIAG_CH 0x00040000 #define SR_DIAG_CE 0x00020000 #define SR_DIAG_DE 0x00010000 #define SR_KX 0x00000080 #define SR_SX 0x00000040 #define SR_UX 0x00000020 #define SR_KSU_MASK 0x00000018 #define SR_KSU_USER 0x00000010 #define SR_KSU_SUPER 0x00000008 #define SR_KSU_KERNEL 0x00000000 #define SR_ERL 0x00000004 #define SR_EXL 0x00000002 #define SR_INT_ENAB 0x00000001 #define SR_INT_MASK 0x0000ff00 #define SOFT_INT_MASK_0 0x00000100 #define SOFT_INT_MASK_1 0x00000200 #define SR_INT_MASK_0 0x00000400 #define SR_INT_MASK_1 0x00000800 #define SR_INT_MASK_2 0x00001000 #define SR_INT_MASK_3 0x00002000 #define SR_INT_MASK_4 0x00004000 #define SR_INT_MASK_5 0x00008000 /* * Interrupt control register in RM7000. Expansion of interrupts. */ #define IC_INT_MASK 0x00003f00 /* Two msb reserved */ #define IC_INT_MASK_6 0x00000100 #define IC_INT_MASK_7 0x00000200 #define IC_INT_MASK_8 0x00000400 #define IC_INT_MASK_9 0x00000800 #define IC_INT_TIMR 0x00001000 /* 12 Timer */ #define IC_INT_PERF 0x00002000 /* 13 Performance counter */ #define IC_INT_TE 0x00000080 /* Timer on INT11 */ #define ALL_INT_MASK ((IC_INT_MASK << 8) | SR_INT_MASK) #define SOFT_INT_MASK (SOFT_INT_MASK_0 | SOFT_INT_MASK_1) #define HW_INT_MASK (ALL_INT_MASK & ~SOFT_INT_MASK) /* * The bits in the cause register. * * CR_BR_DELAY Exception happened in branch delay slot. * CR_COP_ERR Coprocessor error. * CR_IP Interrupt pending bits defined below. * CR_EXC_CODE The exception type (see exception codes below). */ #define CR_BR_DELAY 0x80000000 #define CR_COP_ERR 0x30000000 #define CR_EXC_CODE 0x0000007c #define CR_EXC_CODE_SHIFT 2 #define CR_IPEND 0x003fff00 #define CR_INT_SOFT0 0x00000100 #define CR_INT_SOFT1 0x00000200 #define CR_INT_0 0x00000400 #define CR_INT_1 0x00000800 #define CR_INT_2 0x00001000 #define CR_INT_3 0x00002000 #define CR_INT_4 0x00004000 #define CR_INT_5 0x00008000 /* Following on RM7000 */ #define CR_INT_6 0x00010000 #define CR_INT_7 0x00020000 #define CR_INT_8 0x00040000 #define CR_INT_9 0x00080000 #define CR_INT_HARD 0x000ffc00 #define CR_INT_TIMR 0x00100000 /* 12 Timer */ #define CR_INT_PERF 0x00200000 /* 13 Performance counter */ /* * The bits in the context register. */ #define CNTXT_PTE_BASE 0xff800000 #define CNTXT_BAD_VPN2 0x007ffff0 /* * Location of exception vectors. */ #define RESET_EXC_VEC (CKSEG1_BASE + 0x1fc00000) #define TLB_MISS_EXC_VEC (CKSEG0_BASE + 0x00000000) #define XTLB_MISS_EXC_VEC (CKSEG0_BASE + 0x00000080) #define CACHE_ERR_EXC_VEC (CKSEG0_BASE + 0x00000100) #define GEN_EXC_VEC (CKSEG0_BASE + 0x00000180) /* * Coprocessor 0 registers: */ #define COP_0_TLB_INDEX $0 #define COP_0_TLB_RANDOM $1 #define COP_0_TLB_LO0 $2 #define COP_0_TLB_LO1 $3 #define COP_0_TLB_CONTEXT $4 #define COP_0_TLB_PG_MASK $5 #define COP_0_TLB_WIRED $6 #define COP_0_BAD_VADDR $8 #define COP_0_COUNT $9 #define COP_0_TLB_HI $10 #define COP_0_COMPARE $11 #define COP_0_STATUS_REG $12 #define COP_0_CAUSE_REG $13 #define COP_0_EXC_PC $14 #define COP_0_PRID $15 #define COP_0_CONFIG $16 #define COP_0_LLADDR $17 #define COP_0_WATCH_LO $18 #define COP_0_WATCH_HI $19 #define COP_0_TLB_XCONTEXT $20 #define COP_0_TLB_FR_MASK $21 /* R10000 onwards */ #define COP_0_DIAG $22 /* Loongson 2F */ #define COP_0_ECC $26 #define COP_0_CACHE_ERR $27 #define COP_0_TAG_LO $28 #define COP_0_TAG_HI $29 #define COP_0_ERROR_PC $30 /* * RM7000 specific */ #define COP_0_WATCH_1 $18 #define COP_0_WATCH_2 $19 #define COP_0_WATCH_M $24 #define COP_0_PC_COUNT $25 #define COP_0_PC_CTRL $22 #define COP_0_ICR $20 /* Use cfc0/ctc0 to access */ /* * Octeon specific */ #define COP_0_TLB_PG_GRAIN $5, 1 #define COP_0_CVMCTL $9, 7 #define COP_0_CVMMEMCTL $11, 7 #define COP_0_EBASE $15, 1 /* * Values for the code field in a break instruction. */ #define BREAK_INSTR 0x0000000d #define BREAK_VAL_MASK 0x03ff0000 #define BREAK_VAL_SHIFT 16 #define BREAK_KDB_VAL 512 #define BREAK_SSTEP_VAL 513 #define BREAK_BRKPT_VAL 514 #define BREAK_SOVER_VAL 515 #define BREAK_DDB_VAL 516 #define BREAK_KDB (BREAK_INSTR | (BREAK_KDB_VAL << BREAK_VAL_SHIFT)) #define BREAK_SSTEP (BREAK_INSTR | (BREAK_SSTEP_VAL << BREAK_VAL_SHIFT)) #define BREAK_BRKPT (BREAK_INSTR | (BREAK_BRKPT_VAL << BREAK_VAL_SHIFT)) #define BREAK_SOVER (BREAK_INSTR | (BREAK_SOVER_VAL << BREAK_VAL_SHIFT)) #define BREAK_DDB (BREAK_INSTR | (BREAK_DDB_VAL << BREAK_VAL_SHIFT)) /* * The floating point version and status registers. */ #define FPC_ID $0 #define FPC_CSR $31 /* * The low part of the TLB entry. */ #define VMTLB_PF_NUM 0x3fffffc0 #define VMTLB_ATTR_MASK 0x00000038 #define VMTLB_MOD_BIT 0x00000004 #define VMTLB_VALID_BIT 0x00000002 #define VMTLB_GLOBAL_BIT 0x00000001 #define VMTLB_PHYS_PAGE_SHIFT 6 /* * The high part of the TLB entry. */ #define VMTLB_VIRT_PAGE_NUM 0xffffe000 #define VMTLB_PID 0x000000ff #define VMTLB_PID_SHIFT 0 #define VMTLB_VIRT_PAGE_SHIFT 12 /* * The number of process id entries. */ #define VMNUM_PIDS 256 /* * TLB probe return codes. */ #define VMTLB_NOT_FOUND 0 #define VMTLB_FOUND 1 #define VMTLB_FOUND_WITH_PATCH 2 #define VMTLB_PROBE_ERROR 3 #endif /* _KERNEL || _STANDALONE */ /* * Exported definitions unique to mips cpu support. */ #if defined(_KERNEL) && !defined(_LOCORE) #include #include #include #include struct cpu_hwinfo { uint32_t c0prid; uint32_t c1prid; uint32_t clock; /* Hz */ uint32_t tlbsize; uint type; uint32_t l2size; }; struct cpu_info { struct device *ci_dev; /* our device */ struct cpu_info *ci_self; /* pointer to this structure */ struct cpu_info *ci_next; /* next cpu */ struct proc *ci_curproc; struct user *ci_curprocpaddr; struct proc *ci_fpuproc; /* pointer to last proc to use FP */ uint32_t ci_delayconst; struct cpu_hwinfo ci_hw; /* cache information */ uint ci_cacheconfiguration; uint ci_cacheways; uint ci_l1instcachesize; uint ci_l1instcacheline; uint ci_l1instcacheset; uint ci_l1datacachesize; uint ci_l1datacacheline; uint ci_l1datacacheset; uint ci_l2size; uint ci_l3size; struct schedstate_percpu ci_schedstate; int ci_want_resched; /* need_resched() invoked */ cpuid_t ci_cpuid; /* our CPU ID */ uint32_t ci_randseed; /* per cpu random seed */ int ci_ipl; /* software IPL */ uint32_t ci_softpending; /* pending soft interrupts */ int ci_clock_started; u_int32_t ci_cpu_counter_last; /* last compare value loaded */ u_int32_t ci_cpu_counter_interval; /* # of counter ticks/tick */ u_int32_t ci_pendingticks; struct pmap *ci_curpmap; uint ci_intrdepth; /* interrupt depth */ #ifdef MULTIPROCESSOR u_long ci_flags; /* flags; see below */ struct intrhand ci_ipiih; #endif volatile int ci_ddb; #define CI_DDB_RUNNING 0 #define CI_DDB_SHOULDSTOP 1 #define CI_DDB_STOPPED 2 #define CI_DDB_ENTERDDB 3 #define CI_DDB_INDDB 4 #ifdef DIAGNOSTIC int ci_mutex_level; #endif }; #define CPUF_PRIMARY 0x01 /* CPU is primary CPU */ #define CPUF_PRESENT 0x02 /* CPU is present */ #define CPUF_RUNNING 0x04 /* CPU is running */ extern struct cpu_info cpu_info_primary; extern struct cpu_info *cpu_info_list; #define CPU_INFO_ITERATOR int #define CPU_INFO_FOREACH(cii, ci) for (cii = 0, ci = cpu_info_list; \ ci != NULL; ci = ci->ci_next) #define CPU_INFO_UNIT(ci) ((ci)->ci_dev ? (ci)->ci_dev->dv_unit : 0) #ifdef MULTIPROCESSOR #define MAXCPUS 4 #define getcurcpu() hw_getcurcpu() #define setcurcpu(ci) hw_setcurcpu(ci) extern struct cpu_info *get_cpu_info(int); #define curcpu() getcurcpu() #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) #define cpu_number() (curcpu()->ci_cpuid) extern struct cpuset cpus_running; void cpu_unidle(struct cpu_info *); void cpu_boot_secondary_processors(void); #define cpu_boot_secondary(ci) hw_cpu_boot_secondary(ci) #define cpu_hatch(ci) hw_cpu_hatch(ci) vaddr_t alloc_contiguous_pages(size_t); #define MIPS64_IPI_NOP 0x00000001 #define MIPS64_IPI_RENDEZVOUS 0x00000002 #define MIPS64_IPI_DDB 0x00000004 #define MIPS64_NIPIS 3 /* must not exceed 32 */ void mips64_ipi_init(void); void mips64_send_ipi(unsigned int, unsigned int); void smp_rendezvous_cpus(unsigned long, void (*)(void *), void *arg); #include #else #define MAXCPUS 1 #define curcpu() (&cpu_info_primary) #define CPU_IS_PRIMARY(ci) 1 #define cpu_number() 0 #define cpu_unidle(ci) #define get_cpu_info(i) (&cpu_info_primary) #endif void cpu_startclock(struct cpu_info *); #include /* * Arguments to hardclock encapsulate the previous machine state in * an opaque clockframe. */ #define clockframe trap_frame /* Use normal trap frame */ #define CLKF_USERMODE(framep) ((framep)->sr & SR_KSU_USER) #define CLKF_PC(framep) ((framep)->pc) #define CLKF_INTR(framep) (curcpu()->ci_intrdepth > 1) /* XXX */ /* * This is used during profiling to integrate system time. */ #define PROC_PC(p) ((p)->p_md.md_regs->pc) /* * Preempt the current process if in interrupt from user mode, * or after the current trap/syscall if in system mode. */ #define need_resched(ci) \ do { \ (ci)->ci_want_resched = 1; \ if ((ci)->ci_curproc != NULL) \ aston((ci)->ci_curproc); \ } while(0) #define clear_resched(ci) (ci)->ci_want_resched = 0 /* * Give a profiling tick to the current process when the user profiling * buffer pages are invalid. On the PICA, request an ast to send us * through trap, marking the proc as needing a profiling tick. */ #define need_proftick(p) aston(p) /* * Notify the current process (p) that it has a signal pending, * process as soon as possible. */ #ifdef MULTIPROCESSOR #define signotify(p) (aston(p), cpu_unidle(p->p_cpu)) #else #define signotify(p) aston(p) #endif #define aston(p) p->p_md.md_astpending = 1 #endif /* _KERNEL && !_LOCORE */ /* * CTL_MACHDEP definitions. */ #define CPU_ALLOWAPERTURE 1 /* allow mmap of /dev/xf86 */ #define CPU_KBDRESET 2 /* keyboard reset */ #define CPU_MAXID 3 /* number of valid machdep ids */ #define CTL_MACHDEP_NAMES { \ { 0, 0 }, \ { "allowaperture", CTLTYPE_INT }, \ { "kbdreset", CTLTYPE_INT }, \ } /* * MIPS CPU types (cp_imp). */ #define MIPS_R2000 0x01 /* MIPS R2000 CPU ISA I */ #define MIPS_R3000 0x02 /* MIPS R3000 CPU ISA I */ #define MIPS_R6000 0x03 /* MIPS R6000 CPU ISA II */ #define MIPS_R4000 0x04 /* MIPS R4000/4400 CPU ISA III */ #define MIPS_R3LSI 0x05 /* LSI Logic R3000 derivate ISA I */ #define MIPS_R6000A 0x06 /* MIPS R6000A CPU ISA II */ #define MIPS_OCTEON 0x06 /* Cavium OCTEON MIPS64R2*/ #define MIPS_R3IDT 0x07 /* IDT R3000 derivate ISA I */ #define MIPS_R10000 0x09 /* MIPS R10000/T5 CPU ISA IV */ #define MIPS_R4200 0x0a /* MIPS R4200 CPU (ICE) ISA III */ #define MIPS_R4300 0x0b /* NEC VR4300 CPU ISA III */ #define MIPS_R4100 0x0c /* NEC VR41xx CPU MIPS-16 ISA III */ #define MIPS_R12000 0x0e /* MIPS R12000 ISA IV */ #define MIPS_R14000 0x0f /* MIPS R14000 ISA IV */ #define MIPS_R8000 0x10 /* MIPS R8000 Blackbird/TFP ISA IV */ #define MIPS_R4600 0x20 /* PMCS R4600 Orion ISA III */ #define MIPS_R4700 0x21 /* PMCS R4700 Orion ISA III */ #define MIPS_R3TOSH 0x22 /* Toshiba R3000 based CPU ISA I */ #define MIPS_R5000 0x23 /* MIPS R5000 CPU ISA IV */ #define MIPS_RM7000 0x27 /* PMCS RM7000 CPU ISA IV */ #define MIPS_RM52X0 0x28 /* PMCS RM52X0 CPU ISA IV */ #define MIPS_RM9000 0x34 /* PMCS RM9000 CPU ISA IV */ #define MIPS_LOONGSON 0x42 /* STC LoongSon CPU ISA III */ #define MIPS_VR5400 0x54 /* NEC Vr5400 CPU ISA IV+ */ #define MIPS_LOONGSON2 0x63 /* STC LoongSon2 CPU ISA III */ /* * MIPS FPU types. Only soft, rest is the same as cpu type. */ #define MIPS_SOFT 0x00 /* Software emulation ISA I */ #if defined(_KERNEL) && !defined(_LOCORE) extern vaddr_t CpuCacheAliasMask; struct tlb_entry; struct user; u_int cp0_get_count(void); uint32_t cp0_get_config(void); uint32_t cp0_get_prid(void); void cp0_set_compare(u_int); u_int cp1_get_prid(void); void tlb_set_page_mask(uint32_t); void tlb_set_pid(int); void tlb_set_wired(int); /* * Available cache operation routines. See for more. */ int Octeon_ConfigCache(struct cpu_info *); void Octeon_SyncCache(struct cpu_info *); void Octeon_InvalidateICache(struct cpu_info *, vaddr_t, size_t); void Octeon_SyncDCachePage(struct cpu_info *, paddr_t); void Octeon_HitSyncDCache(struct cpu_info *, paddr_t, size_t); void Octeon_HitInvalidateDCache(struct cpu_info *, paddr_t, size_t); void Octeon_IOSyncDCache(struct cpu_info *, paddr_t, size_t, int); int Loongson2_ConfigCache(struct cpu_info *); void Loongson2_SyncCache(struct cpu_info *); void Loongson2_InvalidateICache(struct cpu_info *, vaddr_t, size_t); void Loongson2_SyncDCachePage(struct cpu_info *, paddr_t); void Loongson2_HitSyncDCache(struct cpu_info *, paddr_t, size_t); void Loongson2_HitInvalidateDCache(struct cpu_info *, paddr_t, size_t); void Loongson2_IOSyncDCache(struct cpu_info *, paddr_t, size_t, int); int Mips5k_ConfigCache(struct cpu_info *); void Mips5k_SyncCache(struct cpu_info *); void Mips5k_InvalidateICache(struct cpu_info *, vaddr_t, size_t); void Mips5k_SyncDCachePage(struct cpu_info *, vaddr_t); void Mips5k_HitSyncDCache(struct cpu_info *, vaddr_t, size_t); void Mips5k_HitInvalidateDCache(struct cpu_info *, vaddr_t, size_t); void Mips5k_IOSyncDCache(struct cpu_info *, vaddr_t, size_t, int); int Mips10k_ConfigCache(struct cpu_info *); void Mips10k_SyncCache(struct cpu_info *); void Mips10k_InvalidateICache(struct cpu_info *, vaddr_t, size_t); void Mips10k_SyncDCachePage(struct cpu_info *, vaddr_t); void Mips10k_HitSyncDCache(struct cpu_info *, vaddr_t, size_t); void Mips10k_HitInvalidateDCache(struct cpu_info *, vaddr_t, size_t); void Mips10k_IOSyncDCache(struct cpu_info *, vaddr_t, size_t, int); void tlb_flush(int); void tlb_flush_addr(vaddr_t); void tlb_write_indexed(int, struct tlb_entry *); int tlb_update(vaddr_t, unsigned); void tlb_read(int, struct tlb_entry *); void savectx(struct user *, int); void enable_fpu(struct proc *); void save_fpu(void); int guarded_read_4(paddr_t, uint32_t *); int guarded_write_4(paddr_t, uint32_t); void MipsFPTrap(struct trap_frame *); register_t MipsEmulateBranch(struct trap_frame *, vaddr_t, uint32_t, uint32_t); /* * Low level access routines to CPU registers */ void setsoftintr0(void); void clearsoftintr0(void); void setsoftintr1(void); void clearsoftintr1(void); uint32_t enableintr(void); uint32_t disableintr(void); uint32_t getsr(void); uint32_t setsr(uint32_t); #endif /* _KERNEL && !_LOCORE */ #endif /* !_MIPS_CPU_H_ */