FM / asm

/usr/src/linux-headers-5.15.0-181/arch/s390/include/asm/

/usr/src/linux-headers-5.15.0-181/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	1881	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-5.15.0-181/arch/s390/include/asm/stacktrace.h (6168B)

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_S390_STACKTRACE_H
#define _ASM_S390_STACKTRACE_H

#include <linux/uaccess.h>
#include <linux/ptrace.h>
#include <asm/switch_to.h>

enum stack_type {
	STACK_TYPE_UNKNOWN,
	STACK_TYPE_TASK,
	STACK_TYPE_IRQ,
	STACK_TYPE_NODAT,
	STACK_TYPE_RESTART,
	STACK_TYPE_MCCK,
};

struct stack_info {
	enum stack_type type;
	unsigned long begin, end;
};

const char *stack_type_name(enum stack_type type);
int get_stack_info(unsigned long sp, struct task_struct *task,
		   struct stack_info *info, unsigned long *visit_mask);

static inline bool on_stack(struct stack_info *info,
			    unsigned long addr, size_t len)
{
	if (info->type == STACK_TYPE_UNKNOWN)
		return false;
	if (addr + len < addr)
		return false;
	return addr >= info->begin && addr + len <= info->end;
}

/*
 * Stack layout of a C stack frame.
 */
#ifndef __PACK_STACK
struct stack_frame {
	unsigned long back_chain;
	unsigned long empty1[5];
	unsigned long gprs[10];
	unsigned int  empty2[8];
};
#else
struct stack_frame {
	unsigned long empty1[5];
	unsigned int  empty2[8];
	unsigned long gprs[10];
	unsigned long back_chain;
};
#endif

/*
 * Unlike current_stack_pointer() which simply returns current value of %r15
 * current_frame_address() returns function stack frame address, which matches
 * %r15 upon function invocation. It may differ from %r15 later if function
 * allocates stack for local variables or new stack frame to call other
 * functions.
 */
#define current_frame_address()						\
	((unsigned long)__builtin_frame_address(0) -			\
	 offsetof(struct stack_frame, back_chain))

static __always_inline unsigned long get_stack_pointer(struct task_struct *task,
						       struct pt_regs *regs)
{
	if (regs)
		return (unsigned long)kernel_stack_pointer(regs);
	if (task == current)
		return current_frame_address();
	return (unsigned long)task->thread.ksp;
}

/*
 * To keep this simple mark register 2-6 as being changed (volatile)
 * by the called function, even though register 6 is saved/nonvolatile.
 */
#define CALL_FMT_0 "=&d" (r2)
#define CALL_FMT_1 "+&d" (r2)
#define CALL_FMT_2 CALL_FMT_1, "+&d" (r3)
#define CALL_FMT_3 CALL_FMT_2, "+&d" (r4)
#define CALL_FMT_4 CALL_FMT_3, "+&d" (r5)
#define CALL_FMT_5 CALL_FMT_4, "+&d" (r6)

#define CALL_CLOBBER_5 "0", "1", "14", "cc", "memory"
#define CALL_CLOBBER_4 CALL_CLOBBER_5
#define CALL_CLOBBER_3 CALL_CLOBBER_4, "5"
#define CALL_CLOBBER_2 CALL_CLOBBER_3, "4"
#define CALL_CLOBBER_1 CALL_CLOBBER_2, "3"
#define CALL_CLOBBER_0 CALL_CLOBBER_1

#define CALL_LARGS_0(...)						\
	long dummy = 0
#define CALL_LARGS_1(t1, a1)						\
	long arg1  = (long)(t1)(a1)
#define CALL_LARGS_2(t1, a1, t2, a2)					\
	CALL_LARGS_1(t1, a1);						\
	long arg2 = (long)(t2)(a2)
#define CALL_LARGS_3(t1, a1, t2, a2, t3, a3)				\
	CALL_LARGS_2(t1, a1, t2, a2);					\
	long arg3 = (long)(t3)(a3)
#define CALL_LARGS_4(t1, a1, t2, a2, t3, a3, t4, a4)			\
	CALL_LARGS_3(t1, a1, t2, a2, t3, a3);				\
	long arg4  = (long)(t4)(a4)
#define CALL_LARGS_5(t1, a1, t2, a2, t3, a3, t4, a4, t5, a5)		\
	CALL_LARGS_4(t1, a1, t2, a2, t3, a3, t4, a4);			\
	long arg5 = (long)(t5)(a5)

#define CALL_REGS_0							\
	register long r2 asm("2") = dummy
#define CALL_REGS_1							\
	register long r2 asm("2") = arg1
#define CALL_REGS_2							\
	CALL_REGS_1;							\
	register long r3 asm("3") = arg2
#define CALL_REGS_3							\
	CALL_REGS_2;							\
	register long r4 asm("4") = arg3
#define CALL_REGS_4							\
	CALL_REGS_3;							\
	register long r5 asm("5") = arg4
#define CALL_REGS_5							\
	CALL_REGS_4;							\
	register long r6 asm("6") = arg5

#define CALL_TYPECHECK_0(...)
#define CALL_TYPECHECK_1(t, a, ...)					\
	typecheck(t, a)
#define CALL_TYPECHECK_2(t, a, ...)					\
	CALL_TYPECHECK_1(__VA_ARGS__);					\
	typecheck(t, a)
#define CALL_TYPECHECK_3(t, a, ...)					\
	CALL_TYPECHECK_2(__VA_ARGS__);					\
	typecheck(t, a)
#define CALL_TYPECHECK_4(t, a, ...)					\
	CALL_TYPECHECK_3(__VA_ARGS__);					\
	typecheck(t, a)
#define CALL_TYPECHECK_5(t, a, ...)					\
	CALL_TYPECHECK_4(__VA_ARGS__);					\
	typecheck(t, a)

#define CALL_PARM_0(...) void
#define CALL_PARM_1(t, a, ...) t
#define CALL_PARM_2(t, a, ...) t, CALL_PARM_1(__VA_ARGS__)
#define CALL_PARM_3(t, a, ...) t, CALL_PARM_2(__VA_ARGS__)
#define CALL_PARM_4(t, a, ...) t, CALL_PARM_3(__VA_ARGS__)
#define CALL_PARM_5(t, a, ...) t, CALL_PARM_4(__VA_ARGS__)
#define CALL_PARM_6(t, a, ...) t, CALL_PARM_5(__VA_ARGS__)

/*
 * Use call_on_stack() to call a function switching to a specified
 * stack. Proper sign and zero extension of function arguments is
 * done. Usage:
 *
 * rc = call_on_stack(nr, stack, rettype, fn, t1, a1, t2, a2, ...)
 *
 * - nr specifies the number of function arguments of fn.
 * - stack specifies the stack to be used.
 * - fn is the function to be called.
 * - rettype is the return type of fn.
 * - t1, a1, ... are pairs, where t1 must match the type of the first
 *   argument of fn, t2 the second, etc. a1 is the corresponding
 *   first function argument (not name), etc.
 */
#define call_on_stack(nr, stack, rettype, fn, ...)			\
({									\
	rettype (*__fn)(CALL_PARM_##nr(__VA_ARGS__)) = fn;		\
	unsigned long frame = current_frame_address();			\
	unsigned long __stack = stack;					\
	unsigned long prev;						\
	CALL_LARGS_##nr(__VA_ARGS__);					\
	CALL_REGS_##nr;							\
									\
	CALL_TYPECHECK_##nr(__VA_ARGS__);				\
	asm volatile(							\
		"	lgr	%[_prev],15\n"				\
		"	lg	15,%[_stack]\n"				\
		"	stg	%[_frame],%[_bc](15)\n"			\
		"	brasl	14,%[_fn]\n"				\
		"	lgr	15,%[_prev]\n"				\
		: [_prev] "=&d" (prev), CALL_FMT_##nr			\
		: [_stack] "R" (__stack),				\
		  [_bc] "i" (offsetof(struct stack_frame, back_chain)),	\
		  [_frame] "d" (frame),					\
		  [_fn] "X" (__fn) : CALL_CLOBBER_##nr);		\
	(rettype)r2;							\
})

#define call_on_stack_noreturn(fn, stack)				\
({									\
	void (*__fn)(void) = fn;					\
									\
	asm volatile(							\
		"	la	15,0(%[_stack])\n"			\
		"	xc	%[_bc](8,15),%[_bc](15)\n"		\
		"	brasl	14,%[_fn]\n"				\
		::[_bc] "i" (offsetof(struct stack_frame, back_chain)),	\
		  [_stack] "a" (stack), [_fn] "X" (__fn));		\
	BUG();								\
})

#endif /* _ASM_S390_STACKTRACE_H */

cmd: