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