Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * linux/arch/unicore32/include/asm/processor.h
3 *
4 * Code specific to PKUnity SoC and UniCore ISA
5 *
6 * Copyright (C) 2001-2010 GUAN Xue-tao
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#ifndef __UNICORE_PROCESSOR_H__
14#define __UNICORE_PROCESSOR_H__
15
16#ifdef __KERNEL__
17
18#include <asm/ptrace.h>
19#include <asm/types.h>
20
21#ifdef __KERNEL__
22#define STACK_TOP TASK_SIZE
23#define STACK_TOP_MAX TASK_SIZE
24#endif
25
26struct debug_entry {
27 u32 address;
28 u32 insn;
29};
30
31struct debug_info {
32 int nsaved;
33 struct debug_entry bp[2];
34};
35
36struct thread_struct {
37 /* fault info */
38 unsigned long address;
39 unsigned long trap_no;
40 unsigned long error_code;
41 /* debugging */
42 struct debug_info debug;
43};
44
45#define INIT_THREAD { }
46
47#define start_thread(regs, pc, sp) \
48({ \
49 unsigned long *stack = (unsigned long *)sp; \
50 memset(regs->uregs, 0, sizeof(regs->uregs)); \
51 regs->UCreg_asr = USER_MODE; \
52 regs->UCreg_pc = pc & ~1; /* pc */ \
53 regs->UCreg_sp = sp; /* sp */ \
54 regs->UCreg_02 = stack[2]; /* r2 (envp) */ \
55 regs->UCreg_01 = stack[1]; /* r1 (argv) */ \
56 regs->UCreg_00 = stack[0]; /* r0 (argc) */ \
57})
58
59/* Forward declaration, a strange C thing */
60struct task_struct;
61
62/* Free all resources held by a thread. */
63extern void release_thread(struct task_struct *);
64
65unsigned long get_wchan(struct task_struct *p);
66
67#define cpu_relax() barrier()
68
69#define task_pt_regs(p) \
70 ((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1)
71
72#define KSTK_EIP(tsk) (task_pt_regs(tsk)->UCreg_pc)
73#define KSTK_ESP(tsk) (task_pt_regs(tsk)->UCreg_sp)
74
75#endif
76
77#endif /* __UNICORE_PROCESSOR_H__ */