mirror of https://gitee.com/openkylin/linux.git
105 lines
2.4 KiB
C
105 lines
2.4 KiB
C
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#ifndef _ASM_SCORE_PROCESSOR_H
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#define _ASM_SCORE_PROCESSOR_H
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#include <linux/cpumask.h>
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#include <linux/threads.h>
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#include <asm/segment.h>
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struct task_struct;
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/*
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* System setup and hardware flags..
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*/
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extern void (*cpu_wait)(void);
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extern unsigned long thread_saved_pc(struct task_struct *tsk);
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extern void start_thread(struct pt_regs *regs,
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unsigned long pc, unsigned long sp);
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extern unsigned long get_wchan(struct task_struct *p);
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/*
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* Return current * instruction pointer ("program counter").
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*/
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#define current_text_addr() ({ __label__ _l; _l: &&_l; })
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#define cpu_relax() barrier()
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#define release_thread(thread) do {} while (0)
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/*
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* User space process size: 2GB. This is hardcoded into a few places,
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* so don't change it unless you know what you are doing.
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*/
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#define TASK_SIZE 0x7fff8000UL
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/*
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* This decides where the kernel will search for a free chunk of vm
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* space during mmap's.
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*/
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#define TASK_UNMAPPED_BASE ((TASK_SIZE / 3) & ~(PAGE_SIZE))
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#ifdef __KERNEL__
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#define STACK_TOP TASK_SIZE
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#define STACK_TOP_MAX TASK_SIZE
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#endif
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/*
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* If you change thread_struct remember to change the #defines below too!
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*/
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struct thread_struct {
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unsigned long reg0, reg2, reg3;
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unsigned long reg12, reg13, reg14, reg15, reg16;
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unsigned long reg17, reg18, reg19, reg20, reg21;
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unsigned long cp0_psr;
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unsigned long cp0_ema; /* Last user fault */
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unsigned long cp0_badvaddr; /* Last user fault */
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unsigned long cp0_baduaddr; /* Last kernel fault accessing USEG */
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unsigned long error_code;
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unsigned long trap_no;
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unsigned long mflags;
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unsigned long reg29;
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unsigned long single_step;
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unsigned long ss_nextcnt;
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unsigned long insn1_type;
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unsigned long addr1;
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unsigned long insn1;
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unsigned long insn2_type;
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unsigned long addr2;
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unsigned long insn2;
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mm_segment_t current_ds;
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};
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#define INIT_THREAD { \
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.reg0 = 0, \
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.reg2 = 0, \
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.reg3 = 0, \
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.reg12 = 0, \
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.reg13 = 0, \
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.reg14 = 0, \
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.reg15 = 0, \
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.reg16 = 0, \
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.reg17 = 0, \
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.reg18 = 0, \
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.reg19 = 0, \
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.reg20 = 0, \
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.reg21 = 0, \
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.cp0_psr = 0, \
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.error_code = 0, \
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.trap_no = 0, \
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}
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#define kstk_tos(tsk) \
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((unsigned long)task_stack_page(tsk) + THREAD_SIZE - 32)
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#define task_pt_regs(tsk) ((struct pt_regs *)kstk_tos(tsk) - 1)
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#define KSTK_EIP(tsk) (task_pt_regs(tsk)->cp0_epc)
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#define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[29])
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#endif /* _ASM_SCORE_PROCESSOR_H */
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