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usr
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src
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linux-headers-6.8.0-83-generic
/
arch
/
sparc
/
include
/
asm
/ [
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]
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processor_32.h
/* 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); #define cpu_relax() barrier() extern void (*sparc_idle)(void); #endif #endif /* __ASM_SPARC_PROCESSOR_H */
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