1da177e4c3
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!
119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
/*
|
|
* linux/include/asm-arm/processor.h
|
|
*
|
|
* Copyright (C) 1995-1999 Russell King
|
|
*
|
|
* 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/ptrace.h>
|
|
#include <asm/procinfo.h>
|
|
#include <asm/types.h>
|
|
|
|
#define KERNEL_STACK_SIZE PAGE_SIZE
|
|
|
|
union debug_insn {
|
|
u32 arm;
|
|
u16 thumb;
|
|
};
|
|
|
|
struct debug_entry {
|
|
u32 address;
|
|
union debug_insn 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;
|
|
};
|
|
|
|
#define INIT_THREAD { }
|
|
|
|
#define start_thread(regs,pc,sp) \
|
|
({ \
|
|
unsigned long *stack = (unsigned long *)sp; \
|
|
set_fs(USER_DS); \
|
|
memzero(regs->uregs, sizeof(regs->uregs)); \
|
|
if (current->personality & ADDR_LIMIT_32BIT) \
|
|
regs->ARM_cpsr = USR_MODE; \
|
|
else \
|
|
regs->ARM_cpsr = USR26_MODE; \
|
|
if (elf_hwcap & HWCAP_THUMB && pc & 1) \
|
|
regs->ARM_cpsr |= PSR_T_BIT; \
|
|
regs->ARM_pc = pc & ~1; /* 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) */ \
|
|
})
|
|
|
|
/* Forward declaration, a strange C thing */
|
|
struct task_struct;
|
|
|
|
/* Free all resources held by a thread. */
|
|
extern void release_thread(struct task_struct *);
|
|
|
|
/* Prepare to copy thread state - unlazy all lazy status */
|
|
#define prepare_to_copy(tsk) do { } while (0)
|
|
|
|
unsigned long get_wchan(struct task_struct *p);
|
|
|
|
#define cpu_relax() barrier()
|
|
|
|
/*
|
|
* Create a new kernel thread
|
|
*/
|
|
extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
|
|
|
|
#define KSTK_EIP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)->thread_info))[1019])
|
|
#define KSTK_ESP(tsk) (((unsigned long *)(4096+(unsigned long)(tsk)->thread_info))[1017])
|
|
|
|
/*
|
|
* Prefetching support - only ARMv5.
|
|
*/
|
|
#if __LINUX_ARM_ARCH__ >= 5
|
|
|
|
#define ARCH_HAS_PREFETCH
|
|
#define prefetch(ptr) \
|
|
({ \
|
|
__asm__ __volatile__( \
|
|
"pld\t%0" \
|
|
: \
|
|
: "o" (*(char *)(ptr)) \
|
|
: "cc"); \
|
|
})
|
|
|
|
#define ARCH_HAS_PREFETCHW
|
|
#define prefetchw(ptr) prefetch(ptr)
|
|
|
|
#define ARCH_HAS_SPINLOCK_PREFETCH
|
|
#define spin_lock_prefetch(x) do { } while (0)
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#endif /* __ASM_ARM_PROCESSOR_H */
|