/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/unicore32/include/asm/processor.h * * Code specific to PKUnity SoC and UniCore ISA * * Copyright (C) 2001-2010 GUAN Xue-tao */ #ifndef __UNICORE_PROCESSOR_H__ #define __UNICORE_PROCESSOR_H__ #ifdef __KERNEL__ #include <asm/ptrace.h> #include <asm/types.h> #ifdef __KERNEL__ #define STACK_TOP TASK_SIZE #define STACK_TOP_MAX TASK_SIZE #endif struct debug_entry { u32 address; u32 insn; }; struct debug_info { int nsaved; struct debug_entry bp[2]; }; struct thread_struct { /* fault info */ unsigned long address; unsigned long trap_no; unsigned long error_code; /* debugging */ struct debug_info debug; }; #define INIT_THREAD { } #define start_thread(regs, pc, sp) \ ({ \ unsigned long *stack = (unsigned long *)sp; \ memset(regs->uregs, 0, sizeof(regs->uregs)); \ regs->UCreg_asr = USER_MODE; \ regs->UCreg_pc = pc & ~1; /* pc */ \ regs->UCreg_sp = sp; /* sp */ \ regs->UCreg_02 = stack[2]; /* r2 (envp) */ \ regs->UCreg_01 = stack[1]; /* r1 (argv) */ \ regs->UCreg_00 = stack[0]; /* r0 (argc) */ \ }) /* Forward declaration, a strange C thing */ struct task_struct; /* Free all resources held by a thread. */ extern void release_thread(struct task_struct *); unsigned long get_wchan(struct task_struct *p); #define cpu_relax() barrier() #define task_pt_regs(p) \ ((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1) #define KSTK_EIP(tsk) (task_pt_regs(tsk)->UCreg_pc) #define KSTK_ESP(tsk) (task_pt_regs(tsk)->UCreg_sp) #endif #endif /* __UNICORE_PROCESSOR_H__ */