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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 | ||
9 | struct task_struct; | |
10 | ||
11 | /* | |
12 | * System setup and hardware flags.. | |
13 | */ | |
14 | extern void (*cpu_wait)(void); | |
15 | ||
6bc9a396 CL |
16 | extern void start_thread(struct pt_regs *regs, |
17 | unsigned long pc, unsigned long sp); | |
18 | extern 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) | |
6bc9a396 CL |
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 | */ | |
48 | struct 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 */ |