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6bc9a396 CL |
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 | ||
16 | extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); | |
17 | extern unsigned long thread_saved_pc(struct task_struct *tsk); | |
18 | extern void start_thread(struct pt_regs *regs, | |
19 | unsigned long pc, unsigned long sp); | |
20 | extern 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) | |
6bc9a396 CL |
29 | |
30 | /* | |
31 | * User space process size: 2GB. This is hardcoded into a few places, | |
32 | * so don't change it unless you know what you are doing. | |
33 | */ | |
34 | #define TASK_SIZE 0x7fff8000UL | |
35 | ||
36 | /* | |
37 | * This decides where the kernel will search for a free chunk of vm | |
38 | * space during mmap's. | |
39 | */ | |
40 | #define TASK_UNMAPPED_BASE ((TASK_SIZE / 3) & ~(PAGE_SIZE)) | |
41 | ||
42 | #ifdef __KERNEL__ | |
43 | #define STACK_TOP TASK_SIZE | |
44 | #define STACK_TOP_MAX TASK_SIZE | |
45 | #endif | |
46 | ||
47 | /* | |
48 | * If you change thread_struct remember to change the #defines below too! | |
49 | */ | |
50 | struct thread_struct { | |
51 | unsigned long reg0, reg2, reg3; | |
52 | unsigned long reg12, reg13, reg14, reg15, reg16; | |
53 | unsigned long reg17, reg18, reg19, reg20, reg21; | |
54 | ||
55 | unsigned long cp0_psr; | |
56 | unsigned long cp0_ema; /* Last user fault */ | |
57 | unsigned long cp0_badvaddr; /* Last user fault */ | |
58 | unsigned long cp0_baduaddr; /* Last kernel fault accessing USEG */ | |
59 | unsigned long error_code; | |
60 | unsigned long trap_no; | |
61 | ||
62 | unsigned long mflags; | |
63 | unsigned long reg29; | |
64 | ||
65 | unsigned long single_step; | |
66 | unsigned long ss_nextcnt; | |
67 | ||
68 | unsigned long insn1_type; | |
69 | unsigned long addr1; | |
70 | unsigned long insn1; | |
71 | ||
72 | unsigned long insn2_type; | |
73 | unsigned long addr2; | |
74 | unsigned long insn2; | |
75 | ||
76 | mm_segment_t current_ds; | |
77 | }; | |
78 | ||
79 | #define INIT_THREAD { \ | |
80 | .reg0 = 0, \ | |
81 | .reg2 = 0, \ | |
82 | .reg3 = 0, \ | |
83 | .reg12 = 0, \ | |
84 | .reg13 = 0, \ | |
85 | .reg14 = 0, \ | |
86 | .reg15 = 0, \ | |
87 | .reg16 = 0, \ | |
88 | .reg17 = 0, \ | |
89 | .reg18 = 0, \ | |
90 | .reg19 = 0, \ | |
91 | .reg20 = 0, \ | |
92 | .reg21 = 0, \ | |
93 | .cp0_psr = 0, \ | |
94 | .error_code = 0, \ | |
95 | .trap_no = 0, \ | |
96 | } | |
97 | ||
98 | #define kstk_tos(tsk) \ | |
99 | ((unsigned long)task_stack_page(tsk) + THREAD_SIZE - 32) | |
100 | #define task_pt_regs(tsk) ((struct pt_regs *)kstk_tos(tsk) - 1) | |
101 | ||
102 | #define KSTK_EIP(tsk) (task_pt_regs(tsk)->cp0_epc) | |
103 | #define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[29]) | |
104 | ||
105 | #endif /* _ASM_SCORE_PROCESSOR_H */ |