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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>
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
32struct 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
44extern struct cpuinfo_m32r boot_cpu_data;
45
46#ifdef CONFIG_SMP
47extern 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
63#ifdef __KERNEL__
64#define STACK_TOP TASK_SIZE
65#define STACK_TOP_MAX STACK_TOP
66#endif
67
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
73typedef struct {
74 unsigned long seg;
75} mm_segment_t;
76
77#define MAX_TRAPS 10
78
79struct debug_trap {
80 int nr_trap;
81 unsigned long addr[MAX_TRAPS];
82 unsigned long insn[MAX_TRAPS];
83};
84
85struct 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 { \
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 */
115struct task_struct;
116struct mm_struct;
117
118/* Free all resources held by a thread. */
119extern void release_thread(struct task_struct *);
120
121/* Copy and release all segment info associated with a VM */
122extern void copy_segments(struct task_struct *p, struct mm_struct * mm);
123extern void release_segments(struct mm_struct * mm);
124
125extern unsigned long thread_saved_pc(struct task_struct *);
126
127/* Copy and release all segment info associated with a VM */
128#define copy_segments(p, mm) do { } while (0)
129#define release_segments(mm) do { } while (0)
130
131unsigned long get_wchan(struct task_struct *p);
132#define KSTK_EIP(tsk) ((tsk)->thread.lr)
133#define KSTK_ESP(tsk) ((tsk)->thread.sp)
134
135#define cpu_relax() barrier()
136#define cpu_relax_lowlatency() cpu_relax()
137
138#endif /* _ASM_M32R_PROCESSOR_H */
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>
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
32struct 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
44extern struct cpuinfo_m32r boot_cpu_data;
45
46#ifdef CONFIG_SMP
47extern 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
63#ifdef __KERNEL__
64#define STACK_TOP TASK_SIZE
65#define STACK_TOP_MAX STACK_TOP
66#endif
67
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
73typedef struct {
74 unsigned long seg;
75} mm_segment_t;
76
77#define MAX_TRAPS 10
78
79struct debug_trap {
80 int nr_trap;
81 unsigned long addr[MAX_TRAPS];
82 unsigned long insn[MAX_TRAPS];
83};
84
85struct 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 { \
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 */
115struct task_struct;
116struct mm_struct;
117
118/* Free all resources held by a thread. */
119extern void release_thread(struct task_struct *);
120
121/*
122 * create a kernel thread without removing it from tasklists
123 */
124extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
125
126/* Copy and release all segment info associated with a VM */
127extern void copy_segments(struct task_struct *p, struct mm_struct * mm);
128extern void release_segments(struct mm_struct * mm);
129
130extern unsigned long thread_saved_pc(struct task_struct *);
131
132/* Copy and release all segment info associated with a VM */
133#define copy_segments(p, mm) do { } while (0)
134#define release_segments(mm) do { } while (0)
135
136unsigned long get_wchan(struct task_struct *p);
137#define KSTK_EIP(tsk) ((tsk)->thread.lr)
138#define KSTK_ESP(tsk) ((tsk)->thread.sp)
139
140#define cpu_relax() barrier()
141
142#endif /* _ASM_M32R_PROCESSOR_H */