/* SPDX-License-Identifier: GPL-2.0 *//* include/asm/processor.h * * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu) */ #ifndef __ASM_SPARC_PROCESSOR_H#define __ASM_SPARC_PROCESSOR_H #include <asm/psr.h>#include <asm/ptrace.h>#include <asm/head.h>#include <asm/signal.h>#include <asm/page.h> /* Whee, this is STACK_TOP + PAGE_SIZE and the lowest kernel address too... * That one page is used to protect kernel from intruders, so that * we can make our access_ok test faster */#define TASK_SIZE	PAGE_OFFSET#ifdef __KERNEL__#define STACK_TOP	(PAGE_OFFSET - PAGE_SIZE)#define STACK_TOP_MAX	STACK_TOP#endif /* __KERNEL__ */ struct task_struct; #ifdef __KERNEL__struct fpq {	unsigned long *insn_addr;	unsigned long insn;};#endif /* The Sparc processor specific thread struct. */struct thread_struct {	struct pt_regs *kregs;	unsigned int _pad1; 	/* Special child fork kpsr/kwim values. */	unsigned long fork_kpsr __attribute__ ((aligned (8)));	unsigned long fork_kwim; 	/* Floating point regs */	unsigned long   float_regs[32] __attribute__ ((aligned (8)));	unsigned long   fsr;	unsigned long   fpqdepth;	struct fpq	fpqueue[16];}; #define INIT_THREAD  { \	.kregs = (struct pt_regs *)(init_stack+THREAD_SIZE)-1 \} /* Do necessary setup to start up a newly executed thread. */static inline void start_thread(struct pt_regs * regs, unsigned long pc,				    unsigned long sp){	register unsigned long zero asm("g1"); 	regs->psr = (regs->psr & (PSR_CWP)) | PSR_S;	regs->pc = ((pc & (~3)) - 4);	regs->npc = regs->pc + 4;	regs->y = 0;	zero = 0;	__asm__ __volatile__("std\t%%g0, [%0 + %3 + 0x00]\n\t"			     "std\t%%g0, [%0 + %3 + 0x08]\n\t"			     "std\t%%g0, [%0 + %3 + 0x10]\n\t"			     "std\t%%g0, [%0 + %3 + 0x18]\n\t"			     "std\t%%g0, [%0 + %3 + 0x20]\n\t"			     "std\t%%g0, [%0 + %3 + 0x28]\n\t"			     "std\t%%g0, [%0 + %3 + 0x30]\n\t"			     "st\t%1, [%0 + %3 + 0x38]\n\t"			     "st\t%%g0, [%0 + %3 + 0x3c]"			     : /* no outputs */			     : "r" (regs),			       "r" (sp - sizeof(struct reg_window32)),			       "r" (zero),			       "i" ((const unsigned long)(&((struct pt_regs *)0)->u_regs[0]))			     : "memory");} unsigned long __get_wchan(struct task_struct *); #define task_pt_regs(tsk) ((tsk)->thread.kregs)#define KSTK_EIP(tsk)  ((tsk)->thread.kregs->pc)#define KSTK_ESP(tsk)  ((tsk)->thread.kregs->u_regs[UREG_FP]) #ifdef __KERNEL__ extern struct task_struct *last_task_used_math;int do_mathemu(struct pt_regs *regs, struct task_struct *fpt); extern void (*sparc_idle)(void); #endif #endif /* __ASM_SPARC_PROCESSOR_H */