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Diffstat (limited to 'include/asm-arm26/processor.h')
| -rw-r--r-- | include/asm-arm26/processor.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/include/asm-arm26/processor.h b/include/asm-arm26/processor.h new file mode 100644 index 000000000000..1d2d5f7b467b --- /dev/null +++ b/include/asm-arm26/processor.h @@ -0,0 +1,113 @@ +/* + * linux/include/asm-arm26/processor.h + * + * Copyright (C) 1995 Russell King + * Copyright (C) 2003 Ian Molton + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_ARM_PROCESSOR_H +#define __ASM_ARM_PROCESSOR_H + +/* + * Default implementation of macro that returns current + * instruction pointer ("program counter"). + */ +#define current_text_addr() ({ __label__ _l; _l: &&_l;}) + +#ifdef __KERNEL__ + +#include <asm/atomic.h> +#include <asm/ptrace.h> +#include <linux/string.h> + +#define KERNEL_STACK_SIZE 4096 + +typedef struct { + void (*put_byte)(void); /* Special calling convention */ + void (*get_byte)(void); /* Special calling convention */ + void (*put_half)(void); /* Special calling convention */ + void (*get_half)(void); /* Special calling convention */ + void (*put_word)(void); /* Special calling convention */ + void (*get_word)(void); /* Special calling convention */ + void (*put_dword)(void); /* Special calling convention */ + unsigned long (*copy_from_user)(void *to, const void *from, unsigned long sz); + unsigned long (*copy_to_user)(void *to, const void *from, unsigned long sz); + unsigned long (*clear_user)(void *addr, unsigned long sz); + unsigned long (*strncpy_from_user)(char *to, const char *from, unsigned long sz); + unsigned long (*strnlen_user)(const char *s, long n); +} uaccess_t; + +extern uaccess_t uaccess_user, uaccess_kernel; + +#define EXTRA_THREAD_STRUCT \ + uaccess_t *uaccess; /* User access functions*/ + +#define EXTRA_THREAD_STRUCT_INIT \ + .uaccess = &uaccess_kernel, + +// FIXME?!! + +#define start_thread(regs,pc,sp) \ +({ \ + unsigned long *stack = (unsigned long *)sp; \ + set_fs(USER_DS); \ + memzero(regs->uregs, sizeof (regs->uregs)); \ + regs->ARM_pc = pc | ~0xfc000003; /* pc */ \ + regs->ARM_sp = sp; /* sp */ \ + regs->ARM_r2 = stack[2]; /* r2 (envp) */ \ + regs->ARM_r1 = stack[1]; /* r1 (argv) */ \ + regs->ARM_r0 = stack[0]; /* r0 (argc) */ \ +}) + +#define KSTK_EIP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)))[1020]) +#define KSTK_ESP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)))[1018]) + +struct debug_entry { + u32 address; + u32 insn; +}; + +struct debug_info { + int nsaved; + struct debug_entry bp[2]; +}; + +struct thread_struct { + /* fault info */ + unsigned long address; + unsigned long trap_no; + unsigned long error_code; + /* debugging */ + struct debug_info debug; + EXTRA_THREAD_STRUCT +}; + +#define INIT_THREAD { \ +EXTRA_THREAD_STRUCT_INIT \ +} + +/* Forward declaration, a strange C thing */ +struct task_struct; + +/* Free all resources held by a thread. */ +extern void release_thread(struct task_struct *); + +unsigned long get_wchan(struct task_struct *p); + +#define cpu_relax() barrier() + +/* Prepare to copy thread state - unlazy all lazy status */ +#define prepare_to_copy(tsk) do { } while (0) + +/* + * Create a new kernel thread + */ +extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); + +#endif + +#endif /* __ASM_ARM_PROCESSOR_H */ |