Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef _ASM_SCORE_PROCESSOR_H
2#define _ASM_SCORE_PROCESSOR_H
3
4#include <linux/cpumask.h>
5#include <linux/threads.h>
6
7#include <asm/segment.h>
8
9struct task_struct;
10
11/*
12 * System setup and hardware flags..
13 */
14extern void (*cpu_wait)(void);
15
16extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
17extern unsigned long thread_saved_pc(struct task_struct *tsk);
18extern void start_thread(struct pt_regs *regs,
19 unsigned long pc, unsigned long sp);
20extern unsigned long get_wchan(struct task_struct *p);
21
22/*
23 * Return current * instruction pointer ("program counter").
24 */
25#define current_text_addr() ({ __label__ _l; _l: &&_l; })
26
27#define cpu_relax() barrier()
28#define release_thread(thread) do {} while (0)
29#define prepare_to_copy(tsk) do {} while (0)
30
31/*
32 * User space process size: 2GB. This is hardcoded into a few places,
33 * so don't change it unless you know what you are doing.
34 */
35#define TASK_SIZE 0x7fff8000UL
36
37/*
38 * This decides where the kernel will search for a free chunk of vm
39 * space during mmap's.
40 */
41#define TASK_UNMAPPED_BASE ((TASK_SIZE / 3) & ~(PAGE_SIZE))
42
43#ifdef __KERNEL__
44#define STACK_TOP TASK_SIZE
45#define STACK_TOP_MAX TASK_SIZE
46#endif
47
48/*
49 * If you change thread_struct remember to change the #defines below too!
50 */
51struct thread_struct {
52 unsigned long reg0, reg2, reg3;
53 unsigned long reg12, reg13, reg14, reg15, reg16;
54 unsigned long reg17, reg18, reg19, reg20, reg21;
55
56 unsigned long cp0_psr;
57 unsigned long cp0_ema; /* Last user fault */
58 unsigned long cp0_badvaddr; /* Last user fault */
59 unsigned long cp0_baduaddr; /* Last kernel fault accessing USEG */
60 unsigned long error_code;
61 unsigned long trap_no;
62
63 unsigned long mflags;
64 unsigned long reg29;
65
66 unsigned long single_step;
67 unsigned long ss_nextcnt;
68
69 unsigned long insn1_type;
70 unsigned long addr1;
71 unsigned long insn1;
72
73 unsigned long insn2_type;
74 unsigned long addr2;
75 unsigned long insn2;
76
77 mm_segment_t current_ds;
78};
79
80#define INIT_THREAD { \
81 .reg0 = 0, \
82 .reg2 = 0, \
83 .reg3 = 0, \
84 .reg12 = 0, \
85 .reg13 = 0, \
86 .reg14 = 0, \
87 .reg15 = 0, \
88 .reg16 = 0, \
89 .reg17 = 0, \
90 .reg18 = 0, \
91 .reg19 = 0, \
92 .reg20 = 0, \
93 .reg21 = 0, \
94 .cp0_psr = 0, \
95 .error_code = 0, \
96 .trap_no = 0, \
97}
98
99#define kstk_tos(tsk) \
100 ((unsigned long)task_stack_page(tsk) + THREAD_SIZE - 32)
101#define task_pt_regs(tsk) ((struct pt_regs *)kstk_tos(tsk) - 1)
102
103#define KSTK_EIP(tsk) (task_pt_regs(tsk)->cp0_epc)
104#define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[29])
105
106#endif /* _ASM_SCORE_PROCESSOR_H */