projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _ASM_M32R_PROCESSOR_H |
| 2 | #define _ASM_M32R_PROCESSOR_H | |
| 3 | ||
| 4 | /* | |
| 5 | * include/asm-m32r/processor.h | |
| 6 | * | |
| 7 | * This file is subject to the terms and conditions of the GNU General Public | |
| 8 | * License. See the file "COPYING" in the main directory of this archive | |
| 9 | * for more details. | |
| 10 | * | |
| 11 | * Copyright (C) 1994 Linus Torvalds | |
| 12 | * Copyright (C) 2001 Hiroyuki Kondo, Hirokazu Takata, and Hitoshi Yamamoto | |
| 13 | * Copyright (C) 2004 Hirokazu Takata <takata at linux-m32r.org> | |
| 14 | */ | |
| 15 | ||
| 16 | #include <linux/kernel.h> | |
| 1da177e4 LT |
17 | #include <asm/cache.h> |
| 18 | #include <asm/ptrace.h> /* pt_regs */ | |
| 19 | ||
| 20 | /* | |
| 21 | * Default implementation of macro that returns current | |
| 22 | * instruction pointer ("program counter"). | |
| 23 | */ | |
| 24 | #define current_text_addr() ({ __label__ _l; _l: &&_l; }) | |
| 25 | ||
| 26 | /* | |
| 27 | * CPU type and hardware bug flags. Kept separately for each CPU. | |
| 28 | * Members of this structure are referenced in head.S, so think twice | |
| 29 | * before touching them. [mj] | |
| 30 | */ | |
| 31 | ||
| 32 | struct cpuinfo_m32r { | |
| 33 | unsigned long pgtable_cache_sz; | |
| 34 | unsigned long cpu_clock; | |
| 35 | unsigned long bus_clock; | |
| 36 | unsigned long timer_divide; | |
| 37 | unsigned long loops_per_jiffy; | |
| 38 | }; | |
| 39 | ||
| 40 | /* | |
| 41 | * capabilities of CPUs | |
| 42 | */ | |
| 43 | ||
| 44 | extern struct cpuinfo_m32r boot_cpu_data; | |
| 45 | ||
| 46 | #ifdef CONFIG_SMP | |
| 47 | extern struct cpuinfo_m32r cpu_data[]; | |
| 48 | #define current_cpu_data cpu_data[smp_processor_id()] | |
| 49 | #else | |
| 50 | #define cpu_data (&boot_cpu_data) | |
| 51 | #define current_cpu_data boot_cpu_data | |
| 52 | #endif | |
| 53 | ||
| 54 | /* | |
| 55 | * User space process size: 2GB (default). | |
| 56 | */ | |
| 57 | #ifdef CONFIG_MMU | |
| 58 | #define TASK_SIZE (0x80000000UL) | |
| 59 | #else | |
| 60 | #define TASK_SIZE (0x00400000UL) | |
| 61 | #endif | |
| 62 | ||
| 922a70d3 DH |
63 | #ifdef __KERNEL__ |
| 64 | #define STACK_TOP TASK_SIZE | |
| 65 | #define STACK_TOP_MAX STACK_TOP | |
| 66 | #endif | |
| 67 | ||
| 1da177e4 LT |
68 | /* This decides where the kernel will search for a free chunk of vm |
| 69 | * space during mmap's. | |
| 70 | */ | |
| 71 | #define TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE / 3) | |
| 72 | ||
| 73 | typedef struct { | |
| 74 | unsigned long seg; | |
| 75 | } mm_segment_t; | |
| 76 | ||
| 77 | #define MAX_TRAPS 10 | |
| 78 | ||
| 79 | struct debug_trap { | |
| 80 | int nr_trap; | |
| 81 | unsigned long addr[MAX_TRAPS]; | |
| 82 | unsigned long insn[MAX_TRAPS]; | |
| 83 | }; | |
| 84 | ||
| 85 | struct thread_struct { | |
| 86 | unsigned long address; | |
| 87 | unsigned long trap_no; /* Trap number */ | |
| 88 | unsigned long error_code; /* Error code of trap */ | |
| 89 | unsigned long lr; /* saved pc */ | |
| 90 | unsigned long sp; /* user stack pointer */ | |
| 91 | struct debug_trap debug_trap; | |
| 92 | }; | |
| 93 | ||
| 94 | #define INIT_SP (sizeof(init_stack) + (unsigned long) &init_stack) | |
| 95 | ||
| 96 | #define INIT_THREAD { \ | |
| 97 | .sp = INIT_SP, \ | |
| 98 | } | |
| 99 | ||
| 100 | /* | |
| 101 | * Do necessary setup to start up a newly executed thread. | |
| 102 | */ | |
| 103 | ||
| 104 | /* User process Backup PSW */ | |
| 105 | #define USERPS_BPSW (M32R_PSW_BSM|M32R_PSW_BIE|M32R_PSW_BPM) | |
| 106 | ||
| 107 | #define start_thread(regs, new_pc, new_spu) \ | |
| 108 | do { \ | |
| 1da177e4 LT |
109 | regs->psw = (regs->psw | USERPS_BPSW) & 0x0000FFFFUL; \ |
| 110 | regs->bpc = new_pc; \ | |
| 111 | regs->spu = new_spu; \ | |
| 112 | } while (0) | |
| 113 | ||
| 114 | /* Forward declaration, a strange C thing */ | |
| 115 | struct task_struct; | |
| 116 | struct mm_struct; | |
| 117 | ||
| 118 | /* Free all resources held by a thread. */ | |
| 119 | extern void release_thread(struct task_struct *); | |
| 120 | ||
| 1da177e4 LT |
121 | unsigned long get_wchan(struct task_struct *p); |
| 122 | #define KSTK_EIP(tsk) ((tsk)->thread.lr) | |
| 123 | #define KSTK_ESP(tsk) ((tsk)->thread.sp) | |
| 124 | ||
| 1da177e4 LT |
125 | #define cpu_relax() barrier() |
| 126 | ||
| 127 | #endif /* _ASM_M32R_PROCESSOR_H */ |