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