2 * linux/arch/unicore32/include/asm/processor.h
4 * Code specific to PKUnity SoC and UniCore ISA
6 * Copyright (C) 2001-2010 GUAN Xue-tao
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #ifndef __UNICORE_PROCESSOR_H__
14 #define __UNICORE_PROCESSOR_H__
18 #include <asm/ptrace.h>
19 #include <asm/types.h>
22 #define STACK_TOP TASK_SIZE
23 #define STACK_TOP_MAX TASK_SIZE
33 struct debug_entry bp[2];
36 struct thread_struct {
38 unsigned long address;
39 unsigned long trap_no;
40 unsigned long error_code;
42 struct debug_info debug;
45 #define INIT_THREAD { }
47 #define start_thread(regs, pc, sp) \
49 unsigned long *stack = (unsigned long *)sp; \
50 memset(regs->uregs, 0, sizeof(regs->uregs)); \
51 regs->UCreg_asr = USER_MODE; \
52 regs->UCreg_pc = pc & ~1; /* pc */ \
53 regs->UCreg_sp = sp; /* sp */ \
54 regs->UCreg_02 = stack[2]; /* r2 (envp) */ \
55 regs->UCreg_01 = stack[1]; /* r1 (argv) */ \
56 regs->UCreg_00 = stack[0]; /* r0 (argc) */ \
59 /* Forward declaration, a strange C thing */
62 /* Free all resources held by a thread. */
63 extern void release_thread(struct task_struct *);
65 unsigned long get_wchan(struct task_struct *p);
67 #define cpu_relax() barrier()
69 #define task_pt_regs(p) \
70 ((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1)
72 #define KSTK_EIP(tsk) (task_pt_regs(tsk)->UCreg_pc)
73 #define KSTK_ESP(tsk) (task_pt_regs(tsk)->UCreg_sp)
77 #endif /* __UNICORE_PROCESSOR_H__ */