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