FM / asm

/usr/src/linux-headers-5.15.0-190/arch/s390/include/asm/

/usr/src/linux-headers-5.15.0-190/arch/s390/include/asm

Name	Size	Mode	Actions
fpu/	-	0755	rm
trace/	-	0755	rm
vdso/	-	0755	rm
airq.h	3421	0644	edit dl rm
alternative-asm.h	3148	0644	edit dl rm
alternative.h	5742	0644	edit dl rm
ap.h	13098	0644	edit dl rm
appldata.h	1593	0644	edit dl rm
archrandom.h	1319	0644	edit dl rm
asm-const.h	376	0644	edit dl rm
asm-prototypes.h	227	0644	edit dl rm
atomic.h	4225	0644	edit dl rm
atomic_ops.h	5100	0644	edit dl rm
barrier.h	1892	0644	edit dl rm
bitops.h	10153	0644	edit dl rm
boot_data.h	481	0644	edit dl rm
bug.h	1562	0644	edit dl rm
bugs.h	441	0644	edit dl rm
cache.h	389	0644	edit dl rm
ccwdev.h	8506	0644	edit dl rm
ccwgroup.h	2301	0644	edit dl rm
checksum.h	3352	0644	edit dl rm
chpid.h	979	0644	edit dl rm
chsc.h	1384	0644	edit dl rm
cio.h	9083	0644	edit dl rm
clocksource.h	184	0644	edit dl rm
clp.h	1426	0644	edit dl rm
cmb.h	425	0644	edit dl rm
cmpxchg.h	5195	0644	edit dl rm
compat.h	5333	0644	edit dl rm
cpacf.h	17759	0644	edit dl rm
cpcmd.h	1135	0644	edit dl rm
cpu.h	549	0644	edit dl rm
cpufeature.h	958	0644	edit dl rm
cputime.h	840	0644	edit dl rm
cpu_mcf.h	3064	0644	edit dl rm
cpu_mf-insn.h	478	0644	edit dl rm
cpu_mf.h	9606	0644	edit dl rm
crw.h	1907	0644	edit dl rm
css_chars.h	904	0644	edit dl rm
ctl_reg.h	3715	0644	edit dl rm
current.h	405	0644	edit dl rm
debug.h	14318	0644	edit dl rm
delay.h	647	0644	edit dl rm
diag.h	7017	0644	edit dl rm
dis.h	636	0644	edit dl rm
dma.h	456	0644	edit dl rm
dwarf.h	952	0644	edit dl rm
eadm.h	2082	0644	edit dl rm
ebcdic.h	1442	0644	edit dl rm
elf.h	11210	0644	edit dl rm
entry-common.h	1590	0644	edit dl rm
exec.h	269	0644	edit dl rm
extable.h	2184	0644	edit dl rm
extmem.h	804	0644	edit dl rm
facility.h	2760	0644	edit dl rm
fcx.h	8102	0644	edit dl rm
ftrace.h	1875	0644	edit dl rm
ftrace.lds.h	720	0644	edit dl rm
futex.h	1927	0644	edit dl rm
gmap.h	5760	0644	edit dl rm
hardirq.h	777	0644	edit dl rm
hugetlb.h	2966	0644	edit dl rm
hw_irq.h	210	0644	edit dl rm
idals.h	5317	0644	edit dl rm
idle.h	753	0644	edit dl rm
io.h	2153	0644	edit dl rm
ipl.h	3708	0644	edit dl rm
irq.h	2635	0644	edit dl rm
irqflags.h	1810	0644	edit dl rm
irq_work.h	204	0644	edit dl rm
isc.h	1036	0644	edit dl rm
itcw.h	950	0644	edit dl rm
jump_label.h	1411	0644	edit dl rm
kasan.h	1772	0644	edit dl rm
Kbuild	253	0644	edit dl rm
kdebug.h	386	0644	edit dl rm
kexec.h	2620	0644	edit dl rm
kfence.h	1148	0644	edit dl rm
kprobes.h	2175	0644	edit dl rm
kvm_host.h	27155	0644	edit dl rm
kvm_para.h	3761	0644	edit dl rm
linkage.h	729	0644	edit dl rm
livepatch.h	474	0644	edit dl rm
lowcore.h	6595	0644	edit dl rm
mem_detect.h	2589	0644	edit dl rm
mem_encrypt.h	365	0644	edit dl rm
mmu.h	1515	0644	edit dl rm
mmu_context.h	3491	0644	edit dl rm
mmzone.h	316	0644	edit dl rm
module.h	1209	0644	edit dl rm
nmi.h	3698	0644	edit dl rm
nospec-branch.h	342	0644	edit dl rm
nospec-insn.h	3616	0644	edit dl rm
numa.h	386	0644	edit dl rm
os_info.h	1136	0644	edit dl rm
page-states.h	486	0644	edit dl rm
page.h	5194	0644	edit dl rm
pci.h	8691	0644	edit dl rm
pci_clp.h	5346	0644	edit dl rm
pci_debug.h	608	0644	edit dl rm
pci_dma.h	5541	0644	edit dl rm
pci_insn.h	4089	0644	edit dl rm
pci_io.h	4405	0644	edit dl rm
percpu.h	6638	0644	edit dl rm
perf_event.h	3245	0644	edit dl rm
pgalloc.h	4024	0644	edit dl rm
pgtable.h	51845	0644	edit dl rm
pkey.h	737	0644	edit dl rm
pnet.h	325	0644	edit dl rm
preempt.h	3218	0644	edit dl rm
processor.h	9637	0644	edit dl rm
ptdump.h	255	0644	edit dl rm
ptrace.h	5865	0644	edit dl rm
purgatory.h	329	0644	edit dl rm
qdio.h	10011	0644	edit dl rm
runtime_instr.h	634	0644	edit dl rm
schid.h	525	0644	edit dl rm
sclp.h	4332	0644	edit dl rm
scsw.h	24630	0644	edit dl rm
seccomp.h	808	0644	edit dl rm
sections.h	1357	0644	edit dl rm
serial.h	147	0644	edit dl rm
setup.h	5156	0644	edit dl rm
set_memory.h	989	0644	edit dl rm
shmparam.h	285	0644	edit dl rm
signal.h	644	0644	edit dl rm
sigp.h	1900	0644	edit dl rm
smp.h	1932	0644	edit dl rm
softirq_stack.h	329	0644	edit dl rm
sparsemem.h	214	0644	edit dl rm
spinlock.h	3525	0644	edit dl rm
spinlock_types.h	407	0644	edit dl rm
stacktrace.h	6168	0644	edit dl rm
stp.h	1706	0644	edit dl rm
string.h	5847	0644	edit dl rm
switch_to.h	1400	0644	edit dl rm
syscall.h	4148	0644	edit dl rm
syscall_wrapper.h	5506	0644	edit dl rm
sysinfo.h	4339	0644	edit dl rm
termios.h	685	0644	edit dl rm
thread_info.h	3605	0644	edit dl rm
timex.h	6538	0644	edit dl rm
tlb.h	4296	0644	edit dl rm
tlbflush.h	3233	0644	edit dl rm
topology.h	2876	0644	edit dl rm
tpi.h	736	0644	edit dl rm
types.h	318	0644	edit dl rm
uaccess.h	10049	0644	edit dl rm
unistd.h	1030	0644	edit dl rm
unwind.h	3360	0644	edit dl rm
uprobes.h	588	0644	edit dl rm
user.h	3384	0644	edit dl rm
uv.h	10977	0644	edit dl rm
vdso.h	746	0644	edit dl rm
vga.h	170	0644	edit dl rm
vmalloc.h	90	0644	edit dl rm
vmlinux.lds.h	1167	0644	edit dl rm
vtime.h	718	0644	edit dl rm
vtimer.h	830	0644	edit dl rm
vx-insn.h	13477	0644	edit dl rm
xor.h	454	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-190/arch/s390/include/asm/processor.h (9637B)

/* SPDX-License-Identifier: GPL-2.0 */
/*
 *  S390 version
 *    Copyright IBM Corp. 1999
 *    Author(s): Hartmut Penner (hp@de.ibm.com),
 *               Martin Schwidefsky (schwidefsky@de.ibm.com)
 *
 *  Derived from "include/asm-i386/processor.h"
 *    Copyright (C) 1994, Linus Torvalds
 */

#ifndef __ASM_S390_PROCESSOR_H
#define __ASM_S390_PROCESSOR_H

#include <linux/bits.h>

#define CIF_NOHZ_DELAY		2	/* delay HZ disable for a tick */
#define CIF_FPU			3	/* restore FPU registers */
#define CIF_ENABLED_WAIT	5	/* in enabled wait state */
#define CIF_MCCK_GUEST		6	/* machine check happening in guest */
#define CIF_DEDICATED_CPU	7	/* this CPU is dedicated */

#define _CIF_NOHZ_DELAY		BIT(CIF_NOHZ_DELAY)
#define _CIF_FPU		BIT(CIF_FPU)
#define _CIF_ENABLED_WAIT	BIT(CIF_ENABLED_WAIT)
#define _CIF_MCCK_GUEST		BIT(CIF_MCCK_GUEST)
#define _CIF_DEDICATED_CPU	BIT(CIF_DEDICATED_CPU)

#define RESTART_FLAG_CTLREGS	_AC(1 << 0, U)

#ifndef __ASSEMBLY__

#include <linux/cpumask.h>
#include <linux/linkage.h>
#include <linux/irqflags.h>
#include <asm/cpu.h>
#include <asm/page.h>
#include <asm/ptrace.h>
#include <asm/setup.h>
#include <asm/runtime_instr.h>
#include <asm/fpu/types.h>
#include <asm/fpu/internal.h>
#include <asm/irqflags.h>

typedef long (*sys_call_ptr_t)(struct pt_regs *regs);

static inline void set_cpu_flag(int flag)
{
	S390_lowcore.cpu_flags |= (1UL << flag);
}

static inline void clear_cpu_flag(int flag)
{
	S390_lowcore.cpu_flags &= ~(1UL << flag);
}

static inline int test_cpu_flag(int flag)
{
	return !!(S390_lowcore.cpu_flags & (1UL << flag));
}

/*
 * Test CIF flag of another CPU. The caller needs to ensure that
 * CPU hotplug can not happen, e.g. by disabling preemption.
 */
static inline int test_cpu_flag_of(int flag, int cpu)
{
	struct lowcore *lc = lowcore_ptr[cpu];
	return !!(lc->cpu_flags & (1UL << flag));
}

#define arch_needs_cpu() test_cpu_flag(CIF_NOHZ_DELAY)

static inline void get_cpu_id(struct cpuid *ptr)
{
	asm volatile("stidp %0" : "=Q" (*ptr));
}

void s390_adjust_jiffies(void);
void s390_update_cpu_mhz(void);
void cpu_detect_mhz_feature(void);

extern const struct seq_operations cpuinfo_op;
extern void execve_tail(void);
extern void __bpon(void);

/*
 * User space process size: 2GB for 31 bit, 4TB or 8PT for 64 bit.
 */

#define TASK_SIZE_OF(tsk)	(test_tsk_thread_flag(tsk, TIF_31BIT) ? \
					_REGION3_SIZE : TASK_SIZE_MAX)
#define TASK_UNMAPPED_BASE	(test_thread_flag(TIF_31BIT) ? \
					(_REGION3_SIZE >> 1) : (_REGION2_SIZE >> 1))
#define TASK_SIZE		TASK_SIZE_OF(current)
#define TASK_SIZE_MAX		(-PAGE_SIZE)

#define STACK_TOP		(test_thread_flag(TIF_31BIT) ? \
					_REGION3_SIZE : _REGION2_SIZE)
#define STACK_TOP_MAX		_REGION2_SIZE

#define HAVE_ARCH_PICK_MMAP_LAYOUT

/*
 * Thread structure
 */
struct thread_struct {
	unsigned int  acrs[NUM_ACRS];
	unsigned long ksp;			/* kernel stack pointer */
	unsigned long user_timer;		/* task cputime in user space */
	unsigned long guest_timer;		/* task cputime in kvm guest */
	unsigned long system_timer;		/* task cputime in kernel space */
	unsigned long hardirq_timer;		/* task cputime in hardirq context */
	unsigned long softirq_timer;		/* task cputime in softirq context */
	const sys_call_ptr_t *sys_call_table;	/* system call table address */
	unsigned long gmap_addr;		/* address of last gmap fault. */
	unsigned int gmap_write_flag;		/* gmap fault write indication */
	unsigned int gmap_int_code;		/* int code of last gmap fault */
	unsigned int gmap_pfault;		/* signal of a pending guest pfault */

/* Per-thread information related to debugging */
	struct per_regs per_user;		/* User specified PER registers */
	struct per_event per_event;		/* Cause of the last PER trap */
	unsigned long per_flags;		/* Flags to control debug behavior */
	unsigned int system_call;		/* system call number in signal */
	unsigned long last_break;		/* last breaking-event-address. */
	/* pfault_wait is used to block the process on a pfault event */
	unsigned long pfault_wait;
	struct list_head list;
	/* cpu runtime instrumentation */
	struct runtime_instr_cb *ri_cb;
	struct gs_cb *gs_cb;			/* Current guarded storage cb */
	struct gs_cb *gs_bc_cb;			/* Broadcast guarded storage cb */
	struct pgm_tdb trap_tdb;		/* Transaction abort diagnose block */
	/*
	 * Warning: 'fpu' is dynamically-sized. It *MUST* be at
	 * the end.
	 */
	struct fpu fpu;			/* FP and VX register save area */
};

/* Flag to disable transactions. */
#define PER_FLAG_NO_TE			1UL
/* Flag to enable random transaction aborts. */
#define PER_FLAG_TE_ABORT_RAND		2UL
/* Flag to specify random transaction abort mode:
 * - abort each transaction at a random instruction before TEND if set.
 * - abort random transactions at a random instruction if cleared.
 */
#define PER_FLAG_TE_ABORT_RAND_TEND	4UL

typedef struct thread_struct thread_struct;

#define ARCH_MIN_TASKALIGN	8

#define INIT_THREAD {							\
	.ksp = sizeof(init_stack) + (unsigned long) &init_stack,	\
	.fpu.regs = (void *) init_task.thread.fpu.fprs,			\
	.last_break = 1,						\
}

/*
 * Do necessary setup to start up a new thread.
 */
#define start_thread(regs, new_psw, new_stackp) do {			\
	regs->psw.mask	= PSW_USER_BITS | PSW_MASK_EA | PSW_MASK_BA;	\
	regs->psw.addr	= new_psw;					\
	regs->gprs[15]	= new_stackp;					\
	execve_tail();							\
} while (0)

#define start_thread31(regs, new_psw, new_stackp) do {			\
	regs->psw.mask	= PSW_USER_BITS | PSW_MASK_BA;			\
	regs->psw.addr	= new_psw;					\
	regs->gprs[15]	= new_stackp;					\
	execve_tail();							\
} while (0)

/* Forward declaration, a strange C thing */
struct task_struct;
struct mm_struct;
struct seq_file;
struct pt_regs;

void show_registers(struct pt_regs *regs);
void show_cacheinfo(struct seq_file *m);

/* Free all resources held by a thread. */
static inline void release_thread(struct task_struct *tsk) { }

/* Free guarded storage control block */
void guarded_storage_release(struct task_struct *tsk);
void gs_load_bc_cb(struct pt_regs *regs);

unsigned long __get_wchan(struct task_struct *p);
#define task_pt_regs(tsk) ((struct pt_regs *) \
        (task_stack_page(tsk) + THREAD_SIZE) - 1)
#define KSTK_EIP(tsk)	(task_pt_regs(tsk)->psw.addr)
#define KSTK_ESP(tsk)	(task_pt_regs(tsk)->gprs[15])

/* Has task runtime instrumentation enabled ? */
#define is_ri_task(tsk) (!!(tsk)->thread.ri_cb)

static __always_inline unsigned long current_stack_pointer(void)
{
	unsigned long sp;

asm volatile("la %0,0(15)" : "=a" (sp));
	return sp;
}

static __always_inline unsigned short stap(void)
{
	unsigned short cpu_address;

asm volatile("stap %0" : "=Q" (cpu_address));
	return cpu_address;
}

#define cpu_relax() barrier()

#define ECAG_CACHE_ATTRIBUTE	0
#define ECAG_CPU_ATTRIBUTE	1

static inline unsigned long __ecag(unsigned int asi, unsigned char parm)
{
	unsigned long val;

asm volatile(".insn	rsy,0xeb000000004c,%0,0,0(%1)" /* ecag */
		     : "=d" (val) : "a" (asi << 8 | parm));
	return val;
}

static inline void psw_set_key(unsigned int key)
{
	asm volatile("spka 0(%0)" : : "d" (key));
}

/*
 * Set PSW to specified value.
 */
static inline void __load_psw(psw_t psw)
{
	asm volatile("lpswe %0" : : "Q" (psw) : "cc");
}

/*
 * Set PSW mask to specified value, while leaving the
 * PSW addr pointing to the next instruction.
 */
static __always_inline void __load_psw_mask(unsigned long mask)
{
	psw_t psw __uninitialized;
	unsigned long addr;

psw.mask = mask;

asm volatile(
		"	larl	%0,1f\n"
		"	stg	%0,%1\n"
		"	lpswe	%2\n"
		"1:"
		: "=&d" (addr), "=Q" (psw.addr) : "Q" (psw) : "memory", "cc");
}

/*
 * Extract current PSW mask
 */
static inline unsigned long __extract_psw(void)
{
	unsigned int reg1, reg2;

asm volatile("epsw %0,%1" : "=d" (reg1), "=a" (reg2));
	return (((unsigned long) reg1) << 32) | ((unsigned long) reg2);
}

static inline void local_mcck_enable(void)
{
	__load_psw_mask(__extract_psw() | PSW_MASK_MCHECK);
}

static inline void local_mcck_disable(void)
{
	__load_psw_mask(__extract_psw() & ~PSW_MASK_MCHECK);
}

/*
 * Rewind PSW instruction address by specified number of bytes.
 */
static inline unsigned long __rewind_psw(psw_t psw, unsigned long ilc)
{
	unsigned long mask;

mask = (psw.mask & PSW_MASK_EA) ? -1UL :
	       (psw.mask & PSW_MASK_BA) ? (1UL << 31) - 1 :
					  (1UL << 24) - 1;
	return (psw.addr - ilc) & mask;
}

/*
 * Function to drop a processor into disabled wait state
 */
static __always_inline void __noreturn disabled_wait(void)
{
	psw_t psw;

psw.mask = PSW_MASK_BASE | PSW_MASK_WAIT | PSW_MASK_BA | PSW_MASK_EA;
	psw.addr = _THIS_IP_;
	__load_psw(psw);
	while (1);
}

/*
 * Basic Program Check Handler.
 */
extern void s390_base_pgm_handler(void);
extern void (*s390_base_pgm_handler_fn)(void);

#define ARCH_LOW_ADDRESS_LIMIT	0x7fffffffUL

extern int memcpy_real(void *, unsigned long, size_t);
extern void memcpy_absolute(void *, void *, size_t);

#define put_abs_lowcore(member, x) do {					\
	unsigned long __abs_address = offsetof(struct lowcore, member);	\
	__typeof__(((struct lowcore *)0)->member) __tmp = (x);		\
									\
	memcpy_absolute(__va(__abs_address), &__tmp, sizeof(__tmp));	\
} while (0)

#define get_abs_lowcore(x, member) do {					\
	unsigned long __abs_address = offsetof(struct lowcore, member);	\
	__typeof__(((struct lowcore *)0)->member) *__ptr = &(x);	\
									\
	memcpy_absolute(__ptr, __va(__abs_address), sizeof(*__ptr));	\
} while (0)

extern int s390_isolate_bp(void);
extern int s390_isolate_bp_guest(void);

static __always_inline bool regs_irqs_disabled(struct pt_regs *regs)
{
	return arch_irqs_disabled_flags(regs->psw.mask);
}

#endif /* __ASSEMBLY__ */

#endif /* __ASM_S390_PROCESSOR_H */

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