FM / asm

/usr/src/linux-headers-5.15.0-181/arch/arm64/include/asm/

/usr/src/linux-headers-5.15.0-181/arch/arm64/include/asm

Name	Size	Mode	Actions
vdso/	-	0755	rm
xen/	-	0755	rm
acenv.h	395	0644	edit dl rm
acpi.h	4942	0644	edit dl rm
alternative-macros.h	5537	0644	edit dl rm
alternative.h	1013	0644	edit dl rm
archrandom.h	3121	0644	edit dl rm
arch_gicv3.h	4055	0644	edit dl rm
arch_timer.h	4631	0644	edit dl rm
arm-cci.h	254	0644	edit dl rm
arm_dsu_pmu.h	3007	0644	edit dl rm
asm-bug.h	952	0644	edit dl rm
asm-offsets.h	35	0644	edit dl rm
asm-prototypes.h	958	0644	edit dl rm
asm-uaccess.h	2296	0644	edit dl rm
asm_pointer_auth.h	2432	0644	edit dl rm
assembler.h	21164	0644	edit dl rm
atomic.h	8618	0644	edit dl rm
atomic_ll_sc.h	10254	0644	edit dl rm
atomic_lse.h	11233	0644	edit dl rm
barrier.h	5429	0644	edit dl rm
bitops.h	850	0644	edit dl rm
bitrev.h	452	0644	edit dl rm
boot.h	369	0644	edit dl rm
brk-imm.h	889	0644	edit dl rm
bug.h	572	0644	edit dl rm
cache.h	3248	0644	edit dl rm
cacheflush.h	4873	0644	edit dl rm
checksum.h	1088	0644	edit dl rm
clocksource.h	136	0644	edit dl rm
cmpxchg.h	8057	0644	edit dl rm
compat.h	3919	0644	edit dl rm
compiler.h	1309	0644	edit dl rm
cpu.h	1520	0644	edit dl rm
cpufeature.h	29001	0644	edit dl rm
cpuidle.h	1330	0644	edit dl rm
cputype.h	11804	0644	edit dl rm
cpu_ops.h	2409	0644	edit dl rm
current.h	517	0644	edit dl rm
daifflags.h	3533	0644	edit dl rm
dcc.h	981	0644	edit dl rm
debug-monitors.h	3284	0644	edit dl rm
device.h	189	0644	edit dl rm
dmi.h	850	0644	edit dl rm
efi.h	4494	0644	edit dl rm
el2_setup.h	5363	0644	edit dl rm
elf.h	8196	0644	edit dl rm
esr.h	12549	0644	edit dl rm
exception.h	3015	0644	edit dl rm
exec.h	278	0644	edit dl rm
extable.h	1127	0644	edit dl rm
fb.h	460	0644	edit dl rm
fixmap.h	3099	0644	edit dl rm
fpsimd.h	5490	0644	edit dl rm
fpsimdmacros.h	6004	0644	edit dl rm
ftrace.h	2962	0644	edit dl rm
futex.h	2953	0644	edit dl rm
hardirq.h	2335	0644	edit dl rm
hugetlb.h	1920	0644	edit dl rm
hwcap.h	5207	0644	edit dl rm
hw_breakpoint.h	4091	0644	edit dl rm
hyperv-tlfs.h	2077	0644	edit dl rm
hypervisor.h	228	0644	edit dl rm
hyp_image.h	1911	0644	edit dl rm
image.h	1509	0644	edit dl rm
insn-def.h	571	0644	edit dl rm
insn.h	21884	0644	edit dl rm
io.h	6631	0644	edit dl rm
irq.h	395	0644	edit dl rm
irqflags.h	2933	0644	edit dl rm
irq_work.h	192	0644	edit dl rm
jump_label.h	1195	0644	edit dl rm
kasan.h	1568	0644	edit dl rm
Kbuild	186	0644	edit dl rm
kernel-pgtable.h	5023	0644	edit dl rm
kexec.h	2795	0644	edit dl rm
kfence.h	410	0644	edit dl rm
kgdb.h	3346	0644	edit dl rm
kprobes.h	1063	0644	edit dl rm
kvm_arm.h	12619	0644	edit dl rm
kvm_asm.h	9921	0644	edit dl rm
kvm_emulate.h	12462	0644	edit dl rm
kvm_host.h	25912	0644	edit dl rm
kvm_hyp.h	4389	0644	edit dl rm
kvm_mmu.h	8874	0644	edit dl rm
kvm_mte.h	1378	0644	edit dl rm
kvm_pgtable.h	19676	0644	edit dl rm
kvm_ptrauth.h	3543	0644	edit dl rm
kvm_ras.h	603	0644	edit dl rm
kvm_types.h	185	0644	edit dl rm
linkage.h	1751	0644	edit dl rm
lse.h	1267	0644	edit dl rm
memory.h	11838	0644	edit dl rm
mman.h	2699	0644	edit dl rm
mmu.h	2476	0644	edit dl rm
mmu_context.h	6944	0644	edit dl rm
mmzone.h	266	0644	edit dl rm
module.h	1810	0644	edit dl rm
module.lds.h	646	0644	edit dl rm
mshyperv.h	1387	0644	edit dl rm
mte-def.h	505	0644	edit dl rm
mte-kasan.h	3640	0644	edit dl rm
mte.h	3426	0644	edit dl rm
neon-intrinsics.h	959	0644	edit dl rm
neon.h	385	0644	edit dl rm
numa.h	165	0644	edit dl rm
page-def.h	441	0644	edit dl rm
page.h	1365	0644	edit dl rm
paravirt.h	580	0644	edit dl rm
patching.h	370	0644	edit dl rm
pci.h	764	0644	edit dl rm
percpu.h	8175	0644	edit dl rm
perf_event.h	10785	0644	edit dl rm
pgalloc.h	2269	0644	edit dl rm
pgtable-hwdef.h	10167	0644	edit dl rm
pgtable-prot.h	4302	0644	edit dl rm
pgtable-types.h	1305	0644	edit dl rm
pgtable.h	29965	0644	edit dl rm
pointer_auth.h	4651	0644	edit dl rm
preempt.h	2366	0644	edit dl rm
probes.h	650	0644	edit dl rm
proc-fns.h	562	0644	edit dl rm
processor.h	10002	0644	edit dl rm
ptdump.h	889	0644	edit dl rm
ptrace.h	10539	0644	edit dl rm
pvclock-abi.h	374	0644	edit dl rm
rwonce.h	2009	0644	edit dl rm
scs.h	497	0644	edit dl rm
sdei.h	1967	0644	edit dl rm
seccomp.h	870	0644	edit dl rm
sections.h	1099	0644	edit dl rm
setup.h	195	0644	edit dl rm
set_memory.h	487	0644	edit dl rm
shmparam.h	425	0644	edit dl rm
signal.h	650	0644	edit dl rm
signal32.h	1980	0644	edit dl rm
simd.h	1488	0644	edit dl rm
smp.h	3955	0644	edit dl rm
smp_plat.h	824	0644	edit dl rm
sparsemem.h	682	0644	edit dl rm
spectre.h	3000	0644	edit dl rm
spinlock.h	601	0644	edit dl rm
spinlock_types.h	360	0644	edit dl rm
stackprotector.h	1359	0644	edit dl rm
stacktrace.h	4314	0644	edit dl rm
stack_pointer.h	247	0644	edit dl rm
stage2_pgtable.h	1058	0644	edit dl rm
stat.h	947	0644	edit dl rm
string.h	1972	0644	edit dl rm
suspend.h	1694	0644	edit dl rm
sync_bitops.h	1085	0644	edit dl rm
syscall.h	2146	0644	edit dl rm
syscall_wrapper.h	3120	0644	edit dl rm
sysreg.h	45773	0644	edit dl rm
system_misc.h	880	0644	edit dl rm
thread_info.h	3887	0644	edit dl rm
timex.h	343	0644	edit dl rm
tlb.h	2332	0644	edit dl rm
tlbflush.h	11891	0644	edit dl rm
topology.h	1203	0644	edit dl rm
trans_pgd.h	1036	0644	edit dl rm
traps.h	2909	0644	edit dl rm
uaccess.h	13718	0644	edit dl rm
unistd.h	1361	0644	edit dl rm
unistd32.h	31568	0644	edit dl rm
uprobes.h	579	0644	edit dl rm
vdso.h	631	0644	edit dl rm
vectors.h	1775	0644	edit dl rm
vermagic.h	200	0644	edit dl rm
virt.h	3569	0644	edit dl rm
vmalloc.h	694	0644	edit dl rm
vmap_stack.h	703	0644	edit dl rm
word-at-a-time.h	1797	0644	edit dl rm
xor.h	1668	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/arch/arm64/include/asm/processor.h (10002B)

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Based on arch/arm/include/asm/processor.h
 *
 * Copyright (C) 1995-1999 Russell King
 * Copyright (C) 2012 ARM Ltd.
 */
#ifndef __ASM_PROCESSOR_H
#define __ASM_PROCESSOR_H

/*
 * On arm64 systems, unaligned accesses by the CPU are cheap, and so there is
 * no point in shifting all network buffers by 2 bytes just to make some IP
 * header fields appear aligned in memory, potentially sacrificing some DMA
 * performance on some platforms.
 */
#define NET_IP_ALIGN	0

#define MTE_CTRL_GCR_USER_EXCL_SHIFT	0
#define MTE_CTRL_GCR_USER_EXCL_MASK	0xffff

#define MTE_CTRL_TCF_SYNC		(1UL << 16)
#define MTE_CTRL_TCF_ASYNC		(1UL << 17)

#ifndef __ASSEMBLY__

#include <linux/build_bug.h>
#include <linux/cache.h>
#include <linux/init.h>
#include <linux/stddef.h>
#include <linux/string.h>
#include <linux/thread_info.h>

#include <vdso/processor.h>

#include <asm/alternative.h>
#include <asm/cpufeature.h>
#include <asm/hw_breakpoint.h>
#include <asm/kasan.h>
#include <asm/lse.h>
#include <asm/pgtable-hwdef.h>
#include <asm/pointer_auth.h>
#include <asm/ptrace.h>
#include <asm/spectre.h>
#include <asm/types.h>

/*
 * TASK_SIZE - the maximum size of a user space task.
 * TASK_UNMAPPED_BASE - the lower boundary of the mmap VM area.
 */

#define DEFAULT_MAP_WINDOW_64	(UL(1) << VA_BITS_MIN)
#define TASK_SIZE_64		(UL(1) << vabits_actual)
#define TASK_SIZE_MAX		(UL(1) << VA_BITS)

#ifdef CONFIG_COMPAT
#if defined(CONFIG_ARM64_64K_PAGES) && defined(CONFIG_KUSER_HELPERS)
/*
 * With CONFIG_ARM64_64K_PAGES enabled, the last page is occupied
 * by the compat vectors page.
 */
#define TASK_SIZE_32		UL(0x100000000)
#else
#define TASK_SIZE_32		(UL(0x100000000) - PAGE_SIZE)
#endif /* CONFIG_ARM64_64K_PAGES */
#define TASK_SIZE		(test_thread_flag(TIF_32BIT) ? \
				TASK_SIZE_32 : TASK_SIZE_64)
#define TASK_SIZE_OF(tsk)	(test_tsk_thread_flag(tsk, TIF_32BIT) ? \
				TASK_SIZE_32 : TASK_SIZE_64)
#define DEFAULT_MAP_WINDOW	(test_thread_flag(TIF_32BIT) ? \
				TASK_SIZE_32 : DEFAULT_MAP_WINDOW_64)
#else
#define TASK_SIZE		TASK_SIZE_64
#define DEFAULT_MAP_WINDOW	DEFAULT_MAP_WINDOW_64
#endif /* CONFIG_COMPAT */

#ifdef CONFIG_ARM64_FORCE_52BIT
#define STACK_TOP_MAX		TASK_SIZE_64
#define TASK_UNMAPPED_BASE	(PAGE_ALIGN(TASK_SIZE / 4))
#else
#define STACK_TOP_MAX		DEFAULT_MAP_WINDOW_64
#define TASK_UNMAPPED_BASE	(PAGE_ALIGN(DEFAULT_MAP_WINDOW / 4))
#endif /* CONFIG_ARM64_FORCE_52BIT */

#ifdef CONFIG_COMPAT
#define AARCH32_VECTORS_BASE	0xffff0000
#define STACK_TOP		(test_thread_flag(TIF_32BIT) ? \
				AARCH32_VECTORS_BASE : STACK_TOP_MAX)
#else
#define STACK_TOP		STACK_TOP_MAX
#endif /* CONFIG_COMPAT */

#ifndef CONFIG_ARM64_FORCE_52BIT
#define arch_get_mmap_end(addr) ((addr > DEFAULT_MAP_WINDOW) ? TASK_SIZE :\
				DEFAULT_MAP_WINDOW)

#define arch_get_mmap_base(addr, base) ((addr > DEFAULT_MAP_WINDOW) ? \
					base + TASK_SIZE - DEFAULT_MAP_WINDOW :\
					base)
#endif /* CONFIG_ARM64_FORCE_52BIT */

extern phys_addr_t arm64_dma_phys_limit;
#define ARCH_LOW_ADDRESS_LIMIT	(arm64_dma_phys_limit - 1)

struct debug_info {
#ifdef CONFIG_HAVE_HW_BREAKPOINT
	/* Have we suspended stepping by a debugger? */
	int			suspended_step;
	/* Allow breakpoints and watchpoints to be disabled for this thread. */
	int			bps_disabled;
	int			wps_disabled;
	/* Hardware breakpoints pinned to this task. */
	struct perf_event	*hbp_break[ARM_MAX_BRP];
	struct perf_event	*hbp_watch[ARM_MAX_WRP];
#endif
};

enum fp_type {
	FP_STATE_CURRENT,	/* Save based on current task state. */
	FP_STATE_FPSIMD,
	FP_STATE_SVE,
};

struct cpu_context {
	unsigned long x19;
	unsigned long x20;
	unsigned long x21;
	unsigned long x22;
	unsigned long x23;
	unsigned long x24;
	unsigned long x25;
	unsigned long x26;
	unsigned long x27;
	unsigned long x28;
	unsigned long fp;
	unsigned long sp;
	unsigned long pc;
};

struct thread_struct {
	struct cpu_context	cpu_context;	/* cpu context */

/*
	 * Whitelisted fields for hardened usercopy:
	 * Maintainers must ensure manually that this contains no
	 * implicit padding.
	 */
	struct {
		unsigned long	tp_value;	/* TLS register */
		unsigned long	tp2_value;
		struct user_fpsimd_state fpsimd_state;
	} uw;

enum fp_type		fp_type;	/* registers FPSIMD or SVE? */
	unsigned int		fpsimd_cpu;
	void			*sve_state;	/* SVE registers, if any */
	unsigned int		sve_vl;		/* SVE vector length */
	unsigned int		sve_vl_onexec;	/* SVE vl after next exec */
	unsigned long		fault_address;	/* fault info */
	unsigned long		fault_code;	/* ESR_EL1 value */
	struct debug_info	debug;		/* debugging */
#ifdef CONFIG_ARM64_PTR_AUTH
	struct ptrauth_keys_user	keys_user;
#ifdef CONFIG_ARM64_PTR_AUTH_KERNEL
	struct ptrauth_keys_kernel	keys_kernel;
#endif
#endif
#ifdef CONFIG_ARM64_MTE
	u64			mte_ctrl;
#endif
	u64			sctlr_user;
};

#define SCTLR_USER_MASK                                                        \
	(SCTLR_ELx_ENIA | SCTLR_ELx_ENIB | SCTLR_ELx_ENDA | SCTLR_ELx_ENDB |   \
	 SCTLR_EL1_TCF0_MASK)

static inline void arch_thread_struct_whitelist(unsigned long *offset,
						unsigned long *size)
{
	/* Verify that there is no padding among the whitelisted fields: */
	BUILD_BUG_ON(sizeof_field(struct thread_struct, uw) !=
		     sizeof_field(struct thread_struct, uw.tp_value) +
		     sizeof_field(struct thread_struct, uw.tp2_value) +
		     sizeof_field(struct thread_struct, uw.fpsimd_state));

*offset = offsetof(struct thread_struct, uw);
	*size = sizeof_field(struct thread_struct, uw);
}

#ifdef CONFIG_COMPAT
#define task_user_tls(t)						\
({									\
	unsigned long *__tls;						\
	if (is_compat_thread(task_thread_info(t)))			\
		__tls = &(t)->thread.uw.tp2_value;			\
	else								\
		__tls = &(t)->thread.uw.tp_value;			\
	__tls;								\
 })
#else
#define task_user_tls(t)	(&(t)->thread.uw.tp_value)
#endif

/* Sync TPIDR_EL0 back to thread_struct for current */
void tls_preserve_current_state(void);

#define INIT_THREAD {				\
	.fpsimd_cpu = NR_CPUS,			\
}

static inline void start_thread_common(struct pt_regs *regs, unsigned long pc)
{
	s32 previous_syscall = regs->syscallno;
	memset(regs, 0, sizeof(*regs));
	regs->syscallno = previous_syscall;
	regs->pc = pc;

if (system_uses_irq_prio_masking())
		regs->pmr_save = GIC_PRIO_IRQON;
}

static inline void start_thread(struct pt_regs *regs, unsigned long pc,
				unsigned long sp)
{
	start_thread_common(regs, pc);
	regs->pstate = PSR_MODE_EL0t;
	spectre_v4_enable_task_mitigation(current);
	regs->sp = sp;
}

#ifdef CONFIG_COMPAT
static inline void compat_start_thread(struct pt_regs *regs, unsigned long pc,
				       unsigned long sp)
{
	start_thread_common(regs, pc);
	regs->pstate = PSR_AA32_MODE_USR;
	if (pc & 1)
		regs->pstate |= PSR_AA32_T_BIT;

#ifdef __AARCH64EB__
	regs->pstate |= PSR_AA32_E_BIT;
#endif

spectre_v4_enable_task_mitigation(current);
	regs->compat_sp = sp;
}
#endif

static __always_inline bool is_ttbr0_addr(unsigned long addr)
{
	/* entry assembly clears tags for TTBR0 addrs */
	return addr < TASK_SIZE;
}

static __always_inline bool is_ttbr1_addr(unsigned long addr)
{
	/* TTBR1 addresses may have a tag if KASAN_SW_TAGS is in use */
	return arch_kasan_reset_tag(addr) >= PAGE_OFFSET;
}

/* 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);

void update_sctlr_el1(u64 sctlr);

/* Thread switching */
extern struct task_struct *cpu_switch_to(struct task_struct *prev,
					 struct task_struct *next);

#define task_pt_regs(p) \
	((struct pt_regs *)(THREAD_SIZE + task_stack_page(p)) - 1)

#define KSTK_EIP(tsk)	((unsigned long)task_pt_regs(tsk)->pc)
#define KSTK_ESP(tsk)	user_stack_pointer(task_pt_regs(tsk))

/*
 * Prefetching support
 */
#define ARCH_HAS_PREFETCH
static inline void prefetch(const void *ptr)
{
	asm volatile("prfm pldl1keep, %a0\n" : : "p" (ptr));
}

#define ARCH_HAS_PREFETCHW
static inline void prefetchw(const void *ptr)
{
	asm volatile("prfm pstl1keep, %a0\n" : : "p" (ptr));
}

#define ARCH_HAS_SPINLOCK_PREFETCH
static inline void spin_lock_prefetch(const void *ptr)
{
	asm volatile(ARM64_LSE_ATOMIC_INSN(
		     "prfm pstl1strm, %a0",
		     "nop") : : "p" (ptr));
}

extern unsigned long __ro_after_init signal_minsigstksz; /* sigframe size */
extern void __init minsigstksz_setup(void);

/*
 * Not at the top of the file due to a direct #include cycle between
 * <asm/fpsimd.h> and <asm/processor.h>.  Deferring this #include
 * ensures that contents of processor.h are visible to fpsimd.h even if
 * processor.h is included first.
 *
 * These prctl helpers are the only things in this file that require
 * fpsimd.h.  The core code expects them to be in this header.
 */
#include <asm/fpsimd.h>

/* Userspace interface for PR_SVE_{SET,GET}_VL prctl()s: */
#define SVE_SET_VL(arg)	sve_set_current_vl(arg)
#define SVE_GET_VL()	sve_get_current_vl()

/* PR_PAC_RESET_KEYS prctl */
#define PAC_RESET_KEYS(tsk, arg)	ptrauth_prctl_reset_keys(tsk, arg)

/* PR_PAC_{SET,GET}_ENABLED_KEYS prctl */
#define PAC_SET_ENABLED_KEYS(tsk, keys, enabled)				\
	ptrauth_set_enabled_keys(tsk, keys, enabled)
#define PAC_GET_ENABLED_KEYS(tsk) ptrauth_get_enabled_keys(tsk)

#ifdef CONFIG_ARM64_TAGGED_ADDR_ABI
/* PR_{SET,GET}_TAGGED_ADDR_CTRL prctl */
long set_tagged_addr_ctrl(struct task_struct *task, unsigned long arg);
long get_tagged_addr_ctrl(struct task_struct *task);
#define SET_TAGGED_ADDR_CTRL(arg)	set_tagged_addr_ctrl(current, arg)
#define GET_TAGGED_ADDR_CTRL()		get_tagged_addr_ctrl(current)
#endif

/*
 * For CONFIG_GCC_PLUGIN_STACKLEAK
 *
 * These need to be macros because otherwise we get stuck in a nightmare
 * of header definitions for the use of task_stack_page.
 */

/*
 * The top of the current task's task stack
 */
#define current_top_of_stack()	((unsigned long)current->stack + THREAD_SIZE)
#define on_thread_stack()	(on_task_stack(current, current_stack_pointer, 1, NULL))

#endif /* __ASSEMBLY__ */
#endif /* __ASM_PROCESSOR_H */

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