diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-m32r/processor.h |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-m32r/processor.h')
-rw-r--r-- | include/asm-m32r/processor.h | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/include/asm-m32r/processor.h b/include/asm-m32r/processor.h new file mode 100644 index 000000000000..09fd1813e780 --- /dev/null +++ b/include/asm-m32r/processor.h | |||
@@ -0,0 +1,143 @@ | |||
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 <linux/config.h> | ||
18 | #include <asm/cache.h> | ||
19 | #include <asm/ptrace.h> /* pt_regs */ | ||
20 | |||
21 | /* | ||
22 | * Default implementation of macro that returns current | ||
23 | * instruction pointer ("program counter"). | ||
24 | */ | ||
25 | #define current_text_addr() ({ __label__ _l; _l: &&_l; }) | ||
26 | |||
27 | /* | ||
28 | * CPU type and hardware bug flags. Kept separately for each CPU. | ||
29 | * Members of this structure are referenced in head.S, so think twice | ||
30 | * before touching them. [mj] | ||
31 | */ | ||
32 | |||
33 | struct cpuinfo_m32r { | ||
34 | unsigned long pgtable_cache_sz; | ||
35 | unsigned long cpu_clock; | ||
36 | unsigned long bus_clock; | ||
37 | unsigned long timer_divide; | ||
38 | unsigned long loops_per_jiffy; | ||
39 | }; | ||
40 | |||
41 | /* | ||
42 | * capabilities of CPUs | ||
43 | */ | ||
44 | |||
45 | extern struct cpuinfo_m32r boot_cpu_data; | ||
46 | |||
47 | #ifdef CONFIG_SMP | ||
48 | extern struct cpuinfo_m32r cpu_data[]; | ||
49 | #define current_cpu_data cpu_data[smp_processor_id()] | ||
50 | #else | ||
51 | #define cpu_data (&boot_cpu_data) | ||
52 | #define current_cpu_data boot_cpu_data | ||
53 | #endif | ||
54 | |||
55 | /* | ||
56 | * User space process size: 2GB (default). | ||
57 | */ | ||
58 | #ifdef CONFIG_MMU | ||
59 | #define TASK_SIZE (0x80000000UL) | ||
60 | #else | ||
61 | #define TASK_SIZE (0x00400000UL) | ||
62 | #endif | ||
63 | |||
64 | /* This decides where the kernel will search for a free chunk of vm | ||
65 | * space during mmap's. | ||
66 | */ | ||
67 | #define TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE / 3) | ||
68 | |||
69 | typedef struct { | ||
70 | unsigned long seg; | ||
71 | } mm_segment_t; | ||
72 | |||
73 | #define MAX_TRAPS 10 | ||
74 | |||
75 | struct debug_trap { | ||
76 | int nr_trap; | ||
77 | unsigned long addr[MAX_TRAPS]; | ||
78 | unsigned long insn[MAX_TRAPS]; | ||
79 | }; | ||
80 | |||
81 | struct thread_struct { | ||
82 | unsigned long address; | ||
83 | unsigned long trap_no; /* Trap number */ | ||
84 | unsigned long error_code; /* Error code of trap */ | ||
85 | unsigned long lr; /* saved pc */ | ||
86 | unsigned long sp; /* user stack pointer */ | ||
87 | struct debug_trap debug_trap; | ||
88 | }; | ||
89 | |||
90 | #define INIT_SP (sizeof(init_stack) + (unsigned long) &init_stack) | ||
91 | |||
92 | #define INIT_THREAD { \ | ||
93 | .sp = INIT_SP, \ | ||
94 | } | ||
95 | |||
96 | /* | ||
97 | * Do necessary setup to start up a newly executed thread. | ||
98 | */ | ||
99 | |||
100 | /* User process Backup PSW */ | ||
101 | #define USERPS_BPSW (M32R_PSW_BSM|M32R_PSW_BIE|M32R_PSW_BPM) | ||
102 | |||
103 | #define start_thread(regs, new_pc, new_spu) \ | ||
104 | do { \ | ||
105 | set_fs(USER_DS); \ | ||
106 | regs->psw = (regs->psw | USERPS_BPSW) & 0x0000FFFFUL; \ | ||
107 | regs->bpc = new_pc; \ | ||
108 | regs->spu = new_spu; \ | ||
109 | } while (0) | ||
110 | |||
111 | /* Forward declaration, a strange C thing */ | ||
112 | struct task_struct; | ||
113 | struct mm_struct; | ||
114 | |||
115 | /* Free all resources held by a thread. */ | ||
116 | extern void release_thread(struct task_struct *); | ||
117 | |||
118 | #define prepare_to_copy(tsk) do { } while (0) | ||
119 | |||
120 | /* | ||
121 | * create a kernel thread without removing it from tasklists | ||
122 | */ | ||
123 | extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); | ||
124 | |||
125 | /* Copy and release all segment info associated with a VM */ | ||
126 | extern void copy_segments(struct task_struct *p, struct mm_struct * mm); | ||
127 | extern void release_segments(struct mm_struct * mm); | ||
128 | |||
129 | extern unsigned long thread_saved_pc(struct task_struct *); | ||
130 | |||
131 | /* Copy and release all segment info associated with a VM */ | ||
132 | #define copy_segments(p, mm) do { } while (0) | ||
133 | #define release_segments(mm) do { } while (0) | ||
134 | |||
135 | unsigned long get_wchan(struct task_struct *p); | ||
136 | #define KSTK_EIP(tsk) ((tsk)->thread.lr) | ||
137 | #define KSTK_ESP(tsk) ((tsk)->thread.sp) | ||
138 | |||
139 | #define THREAD_SIZE (2*PAGE_SIZE) | ||
140 | |||
141 | #define cpu_relax() barrier() | ||
142 | |||
143 | #endif /* _ASM_M32R_PROCESSOR_H */ | ||