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-arm/processor.h |
Linux-2.6.12-rc2v2.6.12-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-arm/processor.h')
-rw-r--r-- | include/asm-arm/processor.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/include/asm-arm/processor.h b/include/asm-arm/processor.h new file mode 100644 index 000000000000..4a9845997a75 --- /dev/null +++ b/include/asm-arm/processor.h | |||
@@ -0,0 +1,118 @@ | |||
1 | /* | ||
2 | * linux/include/asm-arm/processor.h | ||
3 | * | ||
4 | * Copyright (C) 1995-1999 Russell King | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License version 2 as | ||
8 | * published by the Free Software Foundation. | ||
9 | */ | ||
10 | |||
11 | #ifndef __ASM_ARM_PROCESSOR_H | ||
12 | #define __ASM_ARM_PROCESSOR_H | ||
13 | |||
14 | /* | ||
15 | * Default implementation of macro that returns current | ||
16 | * instruction pointer ("program counter"). | ||
17 | */ | ||
18 | #define current_text_addr() ({ __label__ _l; _l: &&_l;}) | ||
19 | |||
20 | #ifdef __KERNEL__ | ||
21 | |||
22 | #include <asm/ptrace.h> | ||
23 | #include <asm/procinfo.h> | ||
24 | #include <asm/types.h> | ||
25 | |||
26 | #define KERNEL_STACK_SIZE PAGE_SIZE | ||
27 | |||
28 | union debug_insn { | ||
29 | u32 arm; | ||
30 | u16 thumb; | ||
31 | }; | ||
32 | |||
33 | struct debug_entry { | ||
34 | u32 address; | ||
35 | union debug_insn insn; | ||
36 | }; | ||
37 | |||
38 | struct debug_info { | ||
39 | int nsaved; | ||
40 | struct debug_entry bp[2]; | ||
41 | }; | ||
42 | |||
43 | struct thread_struct { | ||
44 | /* fault info */ | ||
45 | unsigned long address; | ||
46 | unsigned long trap_no; | ||
47 | unsigned long error_code; | ||
48 | /* debugging */ | ||
49 | struct debug_info debug; | ||
50 | }; | ||
51 | |||
52 | #define INIT_THREAD { } | ||
53 | |||
54 | #define start_thread(regs,pc,sp) \ | ||
55 | ({ \ | ||
56 | unsigned long *stack = (unsigned long *)sp; \ | ||
57 | set_fs(USER_DS); \ | ||
58 | memzero(regs->uregs, sizeof(regs->uregs)); \ | ||
59 | if (current->personality & ADDR_LIMIT_32BIT) \ | ||
60 | regs->ARM_cpsr = USR_MODE; \ | ||
61 | else \ | ||
62 | regs->ARM_cpsr = USR26_MODE; \ | ||
63 | if (elf_hwcap & HWCAP_THUMB && pc & 1) \ | ||
64 | regs->ARM_cpsr |= PSR_T_BIT; \ | ||
65 | regs->ARM_pc = pc & ~1; /* pc */ \ | ||
66 | regs->ARM_sp = sp; /* sp */ \ | ||
67 | regs->ARM_r2 = stack[2]; /* r2 (envp) */ \ | ||
68 | regs->ARM_r1 = stack[1]; /* r1 (argv) */ \ | ||
69 | regs->ARM_r0 = stack[0]; /* r0 (argc) */ \ | ||
70 | }) | ||
71 | |||
72 | /* Forward declaration, a strange C thing */ | ||
73 | struct task_struct; | ||
74 | |||
75 | /* Free all resources held by a thread. */ | ||
76 | extern void release_thread(struct task_struct *); | ||
77 | |||
78 | /* Prepare to copy thread state - unlazy all lazy status */ | ||
79 | #define prepare_to_copy(tsk) do { } while (0) | ||
80 | |||
81 | unsigned long get_wchan(struct task_struct *p); | ||
82 | |||
83 | #define cpu_relax() barrier() | ||
84 | |||
85 | /* | ||
86 | * Create a new kernel thread | ||
87 | */ | ||
88 | extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); | ||
89 | |||
90 | #define KSTK_EIP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)->thread_info))[1019]) | ||
91 | #define KSTK_ESP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)->thread_info))[1017]) | ||
92 | |||
93 | /* | ||
94 | * Prefetching support - only ARMv5. | ||
95 | */ | ||
96 | #if __LINUX_ARM_ARCH__ >= 5 | ||
97 | |||
98 | #define ARCH_HAS_PREFETCH | ||
99 | #define prefetch(ptr) \ | ||
100 | ({ \ | ||
101 | __asm__ __volatile__( \ | ||
102 | "pld\t%0" \ | ||
103 | : \ | ||
104 | : "o" (*(char *)(ptr)) \ | ||
105 | : "cc"); \ | ||
106 | }) | ||
107 | |||
108 | #define ARCH_HAS_PREFETCHW | ||
109 | #define prefetchw(ptr) prefetch(ptr) | ||
110 | |||
111 | #define ARCH_HAS_SPINLOCK_PREFETCH | ||
112 | #define spin_lock_prefetch(x) do { } while (0) | ||
113 | |||
114 | #endif | ||
115 | |||
116 | #endif | ||
117 | |||
118 | #endif /* __ASM_ARM_PROCESSOR_H */ | ||