cregit-Linux how code gets into the kernel

Release 4.7 arch/sh/include/asm/tlb_64.h

/*
 * include/asm-sh/tlb_64.h
 *
 * Copyright (C) 2003  Paul Mundt
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#ifndef __ASM_SH_TLB_64_H

#define __ASM_SH_TLB_64_H

/* ITLB defines */

#define ITLB_FIXED	0x00000000	
/* First fixed ITLB, see head.S */

#define ITLB_LAST_VAR_UNRESTRICTED	0x000003F0	
/* Last ITLB */

/* DTLB defines */

#define DTLB_FIXED	0x00800000	
/* First fixed DTLB, see head.S */

#define DTLB_LAST_VAR_UNRESTRICTED	0x008003F0	
/* Last DTLB */

#ifndef __ASSEMBLY__

/**
 * for_each_dtlb_entry - Iterate over free (non-wired) DTLB entries
 *
 * @tlb:        TLB entry
 */

#define for_each_dtlb_entry(tlb)		\
	for (tlb  = cpu_data->dtlb.first;       \
             tlb <= cpu_data->dtlb.last;        \
             tlb += cpu_data->dtlb.step)

/**
 * for_each_itlb_entry - Iterate over free (non-wired) ITLB entries
 *
 * @tlb:        TLB entry
 */

#define for_each_itlb_entry(tlb)		\
	for (tlb  = cpu_data->itlb.first;       \
             tlb <= cpu_data->itlb.last;        \
             tlb += cpu_data->itlb.step)

/**
 * __flush_tlb_slot - Flushes TLB slot @slot.
 *
 * @slot:       Address of TLB slot.
 */

static inline void __flush_tlb_slot(unsigned long long slot) { __asm__ __volatile__ ("putcfg %0, 0, r63\n" : : "r" (slot)); }

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#ifdef CONFIG_MMU /* arch/sh64/mm/tlb.c */ int sh64_tlb_init(void); unsigned long long sh64_next_free_dtlb_entry(void); unsigned long long sh64_get_wired_dtlb_entry(void); int sh64_put_wired_dtlb_entry(unsigned long long entry); void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr, unsigned long asid, unsigned long paddr); void sh64_teardown_tlb_slot(unsigned long long config_addr); #else #define sh64_tlb_init() do { } while (0) #define sh64_next_free_dtlb_entry() (0) #define sh64_get_wired_dtlb_entry() (0) #define sh64_put_wired_dtlb_entry(entry) do { } while (0) #define sh64_setup_tlb_slot(conf, virt, asid, phys) do { } while (0) #define sh64_teardown_tlb_slot(addr) do { } while (0) #endif /* CONFIG_MMU */ #endif /* __ASSEMBLY__ */ #endif /* __ASM_SH_TLB_64_H */

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