1 #ifndef _ASM_SCORE_PROCESSOR_H
2 #define _ASM_SCORE_PROCESSOR_H
4 #include <linux/cpumask.h>
5 #include <linux/threads.h>
7 #include <asm/segment.h>
12 * System setup and hardware flags..
14 extern void (*cpu_wait)(void);
16 extern unsigned long thread_saved_pc(struct task_struct *tsk);
17 extern void start_thread(struct pt_regs *regs,
18 unsigned long pc, unsigned long sp);
19 extern unsigned long get_wchan(struct task_struct *p);
22 * Return current * instruction pointer ("program counter").
24 #define current_text_addr() ({ __label__ _l; _l: &&_l; })
26 #define cpu_relax() barrier()
27 #define cpu_relax_lowlatency() cpu_relax()
28 #define release_thread(thread) do {} while (0)
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.
34 #define TASK_SIZE 0x7fff8000UL
37 * This decides where the kernel will search for a free chunk of vm
38 * space during mmap's.
40 #define TASK_UNMAPPED_BASE ((TASK_SIZE / 3) & ~(PAGE_SIZE))
43 #define STACK_TOP TASK_SIZE
44 #define STACK_TOP_MAX TASK_SIZE
48 * If you change thread_struct remember to change the #defines below too!
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;
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;
65 unsigned long single_step;
66 unsigned long ss_nextcnt;
68 unsigned long insn1_type;
72 unsigned long insn2_type;
76 mm_segment_t current_ds;
79 #define INIT_THREAD { \
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)
102 #define KSTK_EIP(tsk) (task_pt_regs(tsk)->cp0_epc)
103 #define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[29])
105 #endif /* _ASM_SCORE_PROCESSOR_H */