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Diffstat (limited to 'include/asm-mips/processor.h')
| -rw-r--r-- | include/asm-mips/processor.h | 263 |
1 files changed, 0 insertions, 263 deletions
diff --git a/include/asm-mips/processor.h b/include/asm-mips/processor.h deleted file mode 100644 index a1e4453..0000000 --- a/include/asm-mips/processor.h +++ /dev/null @@ -1,263 +0,0 @@ -/* - * 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. - * - * Copyright (C) 1994 Waldorf GMBH - * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003 Ralf Baechle - * Copyright (C) 1996 Paul M. Antoine - * Copyright (C) 1999, 2000 Silicon Graphics, Inc. - */ -#ifndef _ASM_PROCESSOR_H -#define _ASM_PROCESSOR_H - -#include <linux/cpumask.h> -#include <linux/threads.h> - -#include <asm/cachectl.h> -#include <asm/cpu.h> -#include <asm/cpu-info.h> -#include <asm/mipsregs.h> -#include <asm/prefetch.h> -#include <asm/system.h> - -/* - * Return current * instruction pointer ("program counter"). - */ -#define current_text_addr() ({ __label__ _l; _l: &&_l;}) - -/* - * System setup and hardware flags.. - */ -extern void (*cpu_wait)(void); - -extern unsigned int vced_count, vcei_count; - -#ifdef CONFIG_32BIT -/* - * User space process size: 2GB. This is hardcoded into a few places, - * so don't change it unless you know what you are doing. - */ -#define TASK_SIZE 0x7fff8000UL -#define STACK_TOP TASK_SIZE - -/* - * This decides where the kernel will search for a free chunk of vm - * space during mmap's. - */ -#define TASK_UNMAPPED_BASE ((TASK_SIZE / 3) & ~(PAGE_SIZE)) -#endif - -#ifdef CONFIG_64BIT -/* - * User space process size: 1TB. This is hardcoded into a few places, - * so don't change it unless you know what you are doing. TASK_SIZE - * is limited to 1TB by the R4000 architecture; R10000 and better can - * support 16TB; the architectural reserve for future expansion is - * 8192EB ... - */ -#define TASK_SIZE32 0x7fff8000UL -#define TASK_SIZE 0x10000000000UL -#define STACK_TOP \ - (test_thread_flag(TIF_32BIT_ADDR) ? TASK_SIZE32 : TASK_SIZE) - -/* - * This decides where the kernel will search for a free chunk of vm - * space during mmap's. - */ -#define TASK_UNMAPPED_BASE \ - (test_thread_flag(TIF_32BIT_ADDR) ? \ - PAGE_ALIGN(TASK_SIZE32 / 3) : PAGE_ALIGN(TASK_SIZE / 3)) -#define TASK_SIZE_OF(tsk) \ - (test_tsk_thread_flag(tsk, TIF_32BIT_ADDR) ? TASK_SIZE32 : TASK_SIZE) -#endif - -#ifdef __KERNEL__ -#define STACK_TOP_MAX TASK_SIZE -#endif - -#define NUM_FPU_REGS 32 - -typedef __u64 fpureg_t; - -/* - * It would be nice to add some more fields for emulator statistics, but there - * are a number of fixed offsets in offset.h and elsewhere that would have to - * be recalculated by hand. So the additional information will be private to - * the FPU emulator for now. See asm-mips/fpu_emulator.h. - */ - -struct mips_fpu_struct { - fpureg_t fpr[NUM_FPU_REGS]; - unsigned int fcr31; -}; - -#define NUM_DSP_REGS 6 - -typedef __u32 dspreg_t; - -struct mips_dsp_state { - dspreg_t dspr[NUM_DSP_REGS]; - unsigned int dspcontrol; -}; - -#define INIT_CPUMASK { \ - {0,} \ -} - -typedef struct { - unsigned long seg; -} mm_segment_t; - -#define ARCH_MIN_TASKALIGN 8 - -struct mips_abi; - -/* - * If you change thread_struct remember to change the #defines below too! - */ -struct thread_struct { - /* Saved main processor registers. */ - unsigned long reg16; - unsigned long reg17, reg18, reg19, reg20, reg21, reg22, reg23; - unsigned long reg29, reg30, reg31; - - /* Saved cp0 stuff. */ - unsigned long cp0_status; - - /* Saved fpu/fpu emulator stuff. */ - struct mips_fpu_struct fpu; -#ifdef CONFIG_MIPS_MT_FPAFF - /* Emulated instruction count */ - unsigned long emulated_fp; - /* Saved per-thread scheduler affinity mask */ - cpumask_t user_cpus_allowed; -#endif /* CONFIG_MIPS_MT_FPAFF */ - - /* Saved state of the DSP ASE, if available. */ - struct mips_dsp_state dsp; - - /* Other stuff associated with the thread. */ - unsigned long cp0_badvaddr; /* Last user fault */ - unsigned long cp0_baduaddr; /* Last kernel fault accessing USEG */ - unsigned long error_code; - unsigned long trap_no; - unsigned long irix_trampoline; /* Wheee... */ - unsigned long irix_oldctx; - struct mips_abi *abi; -}; - -#ifdef CONFIG_MIPS_MT_FPAFF -#define FPAFF_INIT \ - .emulated_fp = 0, \ - .user_cpus_allowed = INIT_CPUMASK, -#else -#define FPAFF_INIT -#endif /* CONFIG_MIPS_MT_FPAFF */ - -#define INIT_THREAD { \ - /* \ - * Saved main processor registers \ - */ \ - .reg16 = 0, \ - .reg17 = 0, \ - .reg18 = 0, \ - .reg19 = 0, \ - .reg20 = 0, \ - .reg21 = 0, \ - .reg22 = 0, \ - .reg23 = 0, \ - .reg29 = 0, \ - .reg30 = 0, \ - .reg31 = 0, \ - /* \ - * Saved cp0 stuff \ - */ \ - .cp0_status = 0, \ - /* \ - * Saved FPU/FPU emulator stuff \ - */ \ - .fpu = { \ - .fpr = {0,}, \ - .fcr31 = 0, \ - }, \ - /* \ - * FPU affinity state (null if not FPAFF) \ - */ \ - FPAFF_INIT \ - /* \ - * Saved DSP stuff \ - */ \ - .dsp = { \ - .dspr = {0, }, \ - .dspcontrol = 0, \ - }, \ - /* \ - * Other stuff associated with the process \ - */ \ - .cp0_badvaddr = 0, \ - .cp0_baduaddr = 0, \ - .error_code = 0, \ - .trap_no = 0, \ - .irix_trampoline = 0, \ - .irix_oldctx = 0, \ -} - -struct task_struct; - -/* Free all resources held by a thread. */ -#define release_thread(thread) do { } while(0) - -/* Prepare to copy thread state - unlazy all lazy status */ -#define prepare_to_copy(tsk) do { } while (0) - -extern long kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); - -extern unsigned long thread_saved_pc(struct task_struct *tsk); - -/* - * Do necessary setup to start up a newly executed thread. - */ -extern void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long sp); - -unsigned long get_wchan(struct task_struct *p); - -#define __KSTK_TOS(tsk) ((unsigned long)task_stack_page(tsk) + THREAD_SIZE - 32) -#define task_pt_regs(tsk) ((struct pt_regs *)__KSTK_TOS(tsk) - 1) -#define KSTK_EIP(tsk) (task_pt_regs(tsk)->cp0_epc) -#define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[29]) -#define KSTK_STATUS(tsk) (task_pt_regs(tsk)->cp0_status) - -#define cpu_relax() barrier() - -/* - * Return_address is a replacement for __builtin_return_address(count) - * which on certain architectures cannot reasonably be implemented in GCC - * (MIPS, Alpha) or is unuseable with -fomit-frame-pointer (i386). - * Note that __builtin_return_address(x>=1) is forbidden because GCC - * aborts compilation on some CPUs. It's simply not possible to unwind - * some CPU's stackframes. - * - * __builtin_return_address works only for non-leaf functions. We avoid the - * overhead of a function call by forcing the compiler to save the return - * address register on the stack. - */ -#define return_address() ({__asm__ __volatile__("":::"$31");__builtin_return_address(0);}) - -#ifdef CONFIG_CPU_HAS_PREFETCH - -#define ARCH_HAS_PREFETCH - -static inline void prefetch(const void *addr) -{ - __asm__ __volatile__( - " .set mips4 \n" - " pref %0, (%1) \n" - " .set mips0 \n" - : - : "i" (Pref_Load), "r" (addr)); -} - -#endif - -#endif /* _ASM_PROCESSOR_H */ |