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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136/* SPDX-License-Identifier: GPL-2.0-only *//* * arch/arm/include/asm/processor.h * * Copyright (C) 1995-1999 Russell King */
#ifndef __ASM_ARM_PROCESSOR_H#define __ASM_ARM_PROCESSOR_H
#ifdef __KERNEL__
#include <asm/hw_breakpoint.h>#include <asm/ptrace.h>#include <asm/types.h>#include <asm/unified.h>#include <asm/vdso/processor.h>
#ifdef __KERNEL__#define STACK_TOP ((current->personality & ADDR_LIMIT_32BIT) ? \ TASK_SIZE : TASK_SIZE_26)#define STACK_TOP_MAX TASK_SIZE#endif
struct debug_info {#ifdef CONFIG_HAVE_HW_BREAKPOINT struct perf_event *hbp[ARM_MAX_HBP_SLOTS];#endif};
struct thread_struct { /* fault info */ unsigned long address; unsigned long trap_no; unsigned long error_code; /* debugging */ struct debug_info debug;};
/* * Everything usercopied to/from thread_struct is statically-sized, so * no hardened usercopy whitelist is needed. */static inline void arch_thread_struct_whitelist(unsigned long *offset, unsigned long *size){ *offset = *size = 0;}
#define INIT_THREAD { }
#define start_thread(regs,pc,sp) \({ \ unsigned long r7, r8, r9; \ \ if (IS_ENABLED(CONFIG_BINFMT_ELF_FDPIC)) { \ r7 = regs->ARM_r7; \ r8 = regs->ARM_r8; \ r9 = regs->ARM_r9; \ } \ memset(regs->uregs, 0, sizeof(regs->uregs)); \ if (IS_ENABLED(CONFIG_BINFMT_ELF_FDPIC) && \ current->personality & FDPIC_FUNCPTRS) { \ regs->ARM_r7 = r7; \ regs->ARM_r8 = r8; \ regs->ARM_r9 = r9; \ regs->ARM_r10 = current->mm->start_data; \ } else if (!IS_ENABLED(CONFIG_MMU)) \ regs->ARM_r10 = current->mm->start_data; \ if (current->personality & ADDR_LIMIT_32BIT) \ regs->ARM_cpsr = USR_MODE; \ else \ regs->ARM_cpsr = USR26_MODE; \ if (elf_hwcap & HWCAP_THUMB && pc & 1) \ regs->ARM_cpsr |= PSR_T_BIT; \ if (IS_ENABLED(CONFIG_CPU_ENDIAN_BE8)) \ regs->ARM_cpsr |= PSR_E_BIT; \ regs->ARM_pc = pc & ~1; /* pc */ \ regs->ARM_sp = sp; /* sp */ \})
/* Forward declaration, a strange C thing */struct task_struct;
unsigned long __get_wchan(struct task_struct *p);
#define task_pt_regs(p) \ ((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1)
#define KSTK_EIP(tsk) task_pt_regs(tsk)->ARM_pc#define KSTK_ESP(tsk) task_pt_regs(tsk)->ARM_sp
#ifdef CONFIG_SMP#define __ALT_SMP_ASM(smp, up) \ "9998: " smp "\n" \ " .pushsection \".alt.smp.init\", \"a\"\n" \ " .align 2\n" \ " .long 9998b - .\n" \ " " up "\n" \ " .popsection\n"#else#define __ALT_SMP_ASM(smp, up) up#endif
/* * Prefetching support - only ARMv5. */#if __LINUX_ARM_ARCH__ >= 5
#define ARCH_HAS_PREFETCHstatic inline void prefetch(const void *ptr){ __asm__ __volatile__( "pld\t%a0" :: "p" (ptr));}
#if __LINUX_ARM_ARCH__ >= 7 && defined(CONFIG_SMP)#define ARCH_HAS_PREFETCHWstatic inline void prefetchw(const void *ptr){ __asm__ __volatile__( ".arch_extension mp\n" __ALT_SMP_ASM( "pldw\t%a0", "pld\t%a0" ) :: "p" (ptr));}#endif#endif
#endif
#endif /* __ASM_ARM_PROCESSOR_H */