+++ /dev/null
-#ifndef __ASM_SH_PROCESSOR_64_H
-#define __ASM_SH_PROCESSOR_64_H
-
-/*
- * include/asm-sh/processor_64.h
- *
- * Copyright (C) 2000, 2001 Paolo Alberelli
- * Copyright (C) 2003 Paul Mundt
- * Copyright (C) 2004 Richard Curnow
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#ifndef __ASSEMBLY__
-
-#include <linux/compiler.h>
-#include <asm/page.h>
-#include <asm/types.h>
-#include <asm/cache.h>
-#include <asm/ptrace.h>
-#include <asm/cpu/registers.h>
-
-/*
- * Default implementation of macro that returns current
- * instruction pointer ("program counter").
- */
-#define current_text_addr() ({ \
-void *pc; \
-unsigned long long __dummy = 0; \
-__asm__("gettr tr0, %1\n\t" \
- "pta 4, tr0\n\t" \
- "gettr tr0, %0\n\t" \
- "ptabs %1, tr0\n\t" \
- :"=r" (pc), "=r" (__dummy) \
- : "1" (__dummy)); \
-pc; })
-
-/*
- * TLB information structure
- *
- * Defined for both I and D tlb, per-processor.
- */
-struct tlb_info {
- unsigned long long next;
- unsigned long long first;
- unsigned long long last;
-
- unsigned int entries;
- unsigned int step;
-
- unsigned long flags;
-};
-
-struct sh_cpuinfo {
- enum cpu_type type;
- unsigned long loops_per_jiffy;
- unsigned long asid_cache;
-
- unsigned int cpu_clock, master_clock, bus_clock, module_clock;
-
- /* Cache info */
- struct cache_info icache;
- struct cache_info dcache;
- struct cache_info scache;
-
- /* TLB info */
- struct tlb_info itlb;
- struct tlb_info dtlb;
-
- unsigned long flags;
-};
-
-extern struct sh_cpuinfo cpu_data[];
-#define boot_cpu_data cpu_data[0]
-#define current_cpu_data cpu_data[smp_processor_id()]
-#define raw_current_cpu_data cpu_data[raw_smp_processor_id()]
-
-#endif
-
-/*
- * User space process size: 2GB - 4k.
- */
-#define TASK_SIZE 0x7ffff000UL
-
-#define STACK_TOP TASK_SIZE
-#define STACK_TOP_MAX STACK_TOP
-
-/* This decides where the kernel will search for a free chunk of vm
- * space during mmap's.
- */
-#define TASK_UNMAPPED_BASE (TASK_SIZE / 3)
-
-/*
- * Bit of SR register
- *
- * FD-bit:
- * When it's set, it means the processor doesn't have right to use FPU,
- * and it results exception when the floating operation is executed.
- *
- * IMASK-bit:
- * Interrupt level mask
- *
- * STEP-bit:
- * Single step bit
- *
- */
-#if defined(CONFIG_SH64_SR_WATCH)
-#define SR_MMU 0x84000000
-#else
-#define SR_MMU 0x80000000
-#endif
-
-#define SR_IMASK 0x000000f0
-#define SR_FD 0x00008000
-#define SR_SSTEP 0x08000000
-
-#ifndef __ASSEMBLY__
-
-/*
- * FPU structure and data : require 8-byte alignment as we need to access it
- with fld.p, fst.p
- */
-
-struct sh_fpu_hard_struct {
- unsigned long fp_regs[64];
- unsigned int fpscr;
- /* long status; * software status information */
-};
-
-#if 0
-/* Dummy fpu emulator */
-struct sh_fpu_soft_struct {
- unsigned long long fp_regs[32];
- unsigned int fpscr;
- unsigned char lookahead;
- unsigned long entry_pc;
-};
-#endif
-
-union sh_fpu_union {
- struct sh_fpu_hard_struct hard;
- /* 'hard' itself only produces 32 bit alignment, yet we need
- to access it using 64 bit load/store as well. */
- unsigned long long alignment_dummy;
-};
-
-struct thread_struct {
- unsigned long sp;
- unsigned long pc;
- /* This stores the address of the pt_regs built during a context
- switch, or of the register save area built for a kernel mode
- exception. It is used for backtracing the stack of a sleeping task
- or one that traps in kernel mode. */
- struct pt_regs *kregs;
- /* This stores the address of the pt_regs constructed on entry from
- user mode. It is a fixed value over the lifetime of a process, or
- NULL for a kernel thread. */
- struct pt_regs *uregs;
-
- unsigned long trap_no, error_code;
- unsigned long address;
- /* Hardware debugging registers may come here */
-
- /* floating point info */
- union sh_fpu_union fpu;
-};
-
-#define INIT_MMAP \
-{ &init_mm, 0, 0, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, NULL, NULL }
-
-extern struct pt_regs fake_swapper_regs;
-
-#define INIT_THREAD { \
- .sp = sizeof(init_stack) + \
- (long) &init_stack, \
- .pc = 0, \
- .kregs = &fake_swapper_regs, \
- .uregs = NULL, \
- .trap_no = 0, \
- .error_code = 0, \
- .address = 0, \
- .fpu = { { { 0, } }, } \
-}
-
-/*
- * Do necessary setup to start up a newly executed thread.
- */
-#define SR_USER (SR_MMU | SR_FD)
-
-#define start_thread(regs, new_pc, new_sp) \
- set_fs(USER_DS); \
- regs->sr = SR_USER; /* User mode. */ \
- regs->pc = new_pc - 4; /* Compensate syscall exit */ \
- regs->pc |= 1; /* Set SHmedia ! */ \
- regs->regs[18] = 0; \
- regs->regs[15] = new_sp
-
-/* Forward declaration, a strange C thing */
-struct task_struct;
-struct mm_struct;
-
-/* Free all resources held by a thread. */
-extern void release_thread(struct task_struct *);
-/*
- * create a kernel thread without removing it from tasklists
- */
-extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
-
-
-/* Copy and release all segment info associated with a VM */
-#define copy_segments(p, mm) do { } while (0)
-#define release_segments(mm) do { } while (0)
-#define forget_segments() do { } while (0)
-#define prepare_to_copy(tsk) do { } while (0)
-/*
- * FPU lazy state save handling.
- */
-
-static inline void disable_fpu(void)
-{
- unsigned long long __dummy;
-
- /* Set FD flag in SR */
- __asm__ __volatile__("getcon " __SR ", %0\n\t"
- "or %0, %1, %0\n\t"
- "putcon %0, " __SR "\n\t"
- : "=&r" (__dummy)
- : "r" (SR_FD));
-}
-
-static inline void enable_fpu(void)
-{
- unsigned long long __dummy;
-
- /* Clear out FD flag in SR */
- __asm__ __volatile__("getcon " __SR ", %0\n\t"
- "and %0, %1, %0\n\t"
- "putcon %0, " __SR "\n\t"
- : "=&r" (__dummy)
- : "r" (~SR_FD));
-}
-
-/* Round to nearest, no exceptions on inexact, overflow, underflow,
- zero-divide, invalid. Configure option for whether to flush denorms to
- zero, or except if a denorm is encountered. */
-#if defined(CONFIG_SH64_FPU_DENORM_FLUSH)
-#define FPSCR_INIT 0x00040000
-#else
-#define FPSCR_INIT 0x00000000
-#endif
-
-#ifdef CONFIG_SH_FPU
-/* Initialise the FP state of a task */
-void fpinit(struct sh_fpu_hard_struct *fpregs);
-#else
-#define fpinit(fpregs) do { } while (0)
-#endif
-
-extern struct task_struct *last_task_used_math;
-
-/*
- * Return saved PC of a blocked thread.
- */
-#define thread_saved_pc(tsk) (tsk->thread.pc)
-
-extern unsigned long get_wchan(struct task_struct *p);
-
-#define KSTK_EIP(tsk) ((tsk)->thread.pc)
-#define KSTK_ESP(tsk) ((tsk)->thread.sp)
-
-#define cpu_relax() barrier()
-
-#endif /* __ASSEMBLY__ */
-#endif /* __ASM_SH_PROCESSOR_64_H */
projects / karo-tx-linux.git / blobdiff