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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_S390_NOSPEC_ASM_H
#define _ASM_S390_NOSPEC_ASM_H

#include <asm/alternative-asm.h>
#include <asm/asm-offsets.h>
#ifdef __ASSEMBLY__

#ifdef CONFIG_EXPOLINE

_LC_BR_R1 = __LC_BR_R1

/*
 * The expoline macros are used to create thunks in the same format
 * as gcc generates them. The 'comdat' section flag makes sure that
 * the various thunks are merged into a single copy.
 */
	.macro __THUNK_PROLOG_NAME name
	.pushsection .text.\name,"axG",@progbits,\name,comdat
	.globl \name
	.hidden \name
	.type \name,@function
\name:
	.cfi_startproc
	.endm

	.macro __THUNK_EPILOG
	.cfi_endproc
	.popsection
	.endm

	.macro __THUNK_PROLOG_BR r1,r2
	__THUNK_PROLOG_NAME __s390x_indirect_jump_r\r2\()use_r\r1
	.endm

	.macro __THUNK_PROLOG_BC d0,r1,r2
	__THUNK_PROLOG_NAME __s390x_indirect_branch_\d0\()_\r2\()use_\r1
	.endm

	.macro __THUNK_BR r1,r2
	jg	__s390x_indirect_jump_r\r2\()use_r\r1
	.endm

	.macro __THUNK_BC d0,r1,r2
	jg	__s390x_indirect_branch_\d0\()_\r2\()use_\r1
	.endm

	.macro __THUNK_BRASL r1,r2,r3
	brasl	\r1,__s390x_indirect_jump_r\r3\()use_r\r2
	.endm

	.macro	__DECODE_RR expand,reg,ruse
	.set __decode_fail,1
	.irp r1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
	.ifc \reg,%r\r1
	.irp r2,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
	.ifc \ruse,%r\r2
	\expand \r1,\r2
	.set __decode_fail,0
	.endif
	.endr
	.endif
	.endr
	.if __decode_fail == 1
	.error "__DECODE_RR failed"
	.endif
	.endm

	.macro	__DECODE_RRR expand,rsave,rtarget,ruse
	.set __decode_fail,1
	.irp r1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
	.ifc \rsave,%r\r1
	.irp r2,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
	.ifc \rtarget,%r\r2
	.irp r3,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
	.ifc \ruse,%r\r3
	\expand \r1,\r2,\r3
	.set __decode_fail,0
	.endif
	.endr
	.endif
	.endr
	.endif
	.endr
	.if __decode_fail == 1
	.error "__DECODE_RRR failed"
	.endif
	.endm

	.macro	__DECODE_DRR expand,disp,reg,ruse
	.set __decode_fail,1
	.irp r1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
	.ifc \reg,%r\r1
	.irp r2,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
	.ifc \ruse,%r\r2
	\expand \disp,\r1,\r2
	.set __decode_fail,0
	.endif
	.endr
	.endif
	.endr
	.if __decode_fail == 1
	.error "__DECODE_DRR failed"
	.endif
	.endm

	.macro __THUNK_EX_BR reg,ruse
	# Be very careful when adding instructions to this macro!
	# The ALTERNATIVE replacement code has a .+10 which targets
	# the "br \reg" after the code has been patched.
#ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
	exrl	0,555f
	j	.
#else
	.ifc \reg,%r1
	ALTERNATIVE "ex %r0,_LC_BR_R1", ".insn ril,0xc60000000000,0,.+10", 35
	j	.
	.else
	larl	\ruse,555f
	ex	0,0(\ruse)
	j	.
	.endif
#endif
555:	br	\reg
	.endm

	.macro __THUNK_EX_BC disp,reg,ruse
#ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
	exrl	0,556f
	j	.
#else
	larl	\ruse,556f
	ex	0,0(\ruse)
	j	.
#endif
556:	b	\disp(\reg)
	.endm

	.macro GEN_BR_THUNK reg,ruse=%r1
	__DECODE_RR __THUNK_PROLOG_BR,\reg,\ruse
	__THUNK_EX_BR \reg,\ruse
	__THUNK_EPILOG
	.endm

	.macro GEN_B_THUNK disp,reg,ruse=%r1
	__DECODE_DRR __THUNK_PROLOG_BC,\disp,\reg,\ruse
	__THUNK_EX_BC \disp,\reg,\ruse
	__THUNK_EPILOG
	.endm

	.macro BR_EX reg,ruse=%r1
557:	__DECODE_RR __THUNK_BR,\reg,\ruse
	.pushsection .s390_indirect_branches,"a",@progbits
	.long	557b-.
	.popsection
	.endm

	 .macro B_EX disp,reg,ruse=%r1
558:	__DECODE_DRR __THUNK_BC,\disp,\reg,\ruse
	.pushsection .s390_indirect_branches,"a",@progbits
	.long	558b-.
	.popsection
	.endm

	.macro BASR_EX rsave,rtarget,ruse=%r1
559:	__DECODE_RRR __THUNK_BRASL,\rsave,\rtarget,\ruse
	.pushsection .s390_indirect_branches,"a",@progbits
	.long	559b-.
	.popsection
	.endm

#else
	.macro GEN_BR_THUNK reg,ruse=%r1
	.endm

	.macro GEN_B_THUNK disp,reg,ruse=%r1
	.endm

	 .macro BR_EX reg,ruse=%r1
	br	\reg
	.endm

	 .macro B_EX disp,reg,ruse=%r1
	b	\disp(\reg)
	.endm

	.macro BASR_EX rsave,rtarget,ruse=%r1
	basr	\rsave,\rtarget
	.endm
#endif

#endif /* __ASSEMBLY__ */

#endif /* _ASM_S390_NOSPEC_ASM_H */

Filemanager

Name Type Size Permission Actions
fpu Folder 0755
trace Folder 0755
Kbuild File 557 B 0644
airq.h File 3.02 KB 0644
alternative-asm.h File 3.07 KB 0644
alternative.h File 4.99 KB 0644
ap.h File 9.9 KB 0644
appldata.h File 1.54 KB 0644
archrandom.h File 1.1 KB 0644
asm-prototypes.h File 227 B 0644
atomic.h File 5.1 KB 0644
atomic_ops.h File 4.02 KB 0644
barrier.h File 1.84 KB 0644
bitops.h File 10.13 KB 0644
bug.h File 1.49 KB 0644
bugs.h File 441 B 0644
cache.h File 387 B 0644
ccwdev.h File 7.99 KB 0644
ccwgroup.h File 2.53 KB 0644
checksum.h File 3.24 KB 0644
chpid.h File 974 B 0644
cio.h File 8.01 KB 0644
clp.h File 1.32 KB 0644
cmb.h File 425 B 0644
cmpxchg.h File 1.76 KB 0644
compat.h File 7.9 KB 0644
cpacf.h File 16.8 KB 0644
cpcmd.h File 1.11 KB 0644
cpu.h File 549 B 0644
cpu_mf.h File 8.99 KB 0644
cpufeature.h File 963 B 0644
cputime.h File 805 B 0644
crw.h File 1.86 KB 0644
css_chars.h File 769 B 0644
ctl_reg.h File 2.89 KB 0644
current.h File 405 B 0644
debug.h File 8.1 KB 0644
delay.h File 721 B 0644
diag.h File 5.94 KB 0644
dis.h File 637 B 0644
dma-mapping.h File 621 B 0644
dma.h File 456 B 0644
eadm.h File 2.03 KB 0644
ebcdic.h File 1.41 KB 0644
elf.h File 10.36 KB 0644
exec.h File 269 B 0644
extable.h File 875 B 0644
extmem.h File 804 B 0644
facility.h File 2.44 KB 0644
fcx.h File 7.91 KB 0644
ftrace.h File 1.66 KB 0644
futex.h File 2.07 KB 0644
gmap.h File 4.93 KB 0644
hardirq.h File 670 B 0644
hugetlb.h File 2.82 KB 0644
hw_irq.h File 249 B 0644
idals.h File 5.22 KB 0644
idle.h File 709 B 0644
io.h File 2.03 KB 0644
ipl.h File 3.6 KB 0644
irq.h File 2.55 KB 0644
irqflags.h File 1.76 KB 0644
isc.h File 1000 B 0644
itcw.h File 950 B 0644
jump_label.h File 1.36 KB 0644
kdebug.h File 386 B 0644
kexec.h File 1.32 KB 0644
kprobes.h File 2.24 KB 0644
kvm_host.h File 22.24 KB 0644
kvm_para.h File 5.78 KB 0644
linkage.h File 633 B 0644
livepatch.h File 461 B 0644
lowcore.h File 6.29 KB 0644
mmu.h File 1.19 KB 0644
mmu_context.h File 3.84 KB 0644
mmzone.h File 316 B 0644
module.h File 802 B 0644
nmi.h File 3.44 KB 0644
nospec-branch.h File 342 B 0644
nospec-insn.h File 3.81 KB 0644
numa.h File 730 B 0644
os_info.h File 1.1 KB 0644
page-states.h File 486 B 0644
page.h File 5.12 KB 0644
pci.h File 6.26 KB 0644
pci_clp.h File 4.25 KB 0644
pci_debug.h File 608 B 0644
pci_dma.h File 5.7 KB 0644
pci_insn.h File 2.59 KB 0644
pci_io.h File 4.58 KB 0644
percpu.h File 6.43 KB 0644
perf_event.h File 2.71 KB 0644
pgalloc.h File 4.32 KB 0644
pgtable.h File 47.7 KB 0644
pkey.h File 4.23 KB 0644
preempt.h File 3.25 KB 0644
processor.h File 10.42 KB 0644
ptrace.h File 5.27 KB 0644
qdio.h File 11.67 KB 0644
reset.h File 471 B 0644
runtime_instr.h File 1.76 KB 0644
schid.h File 525 B 0644
sclp.h File 3.38 KB 0644
scsw.h File 24.1 KB 0644
seccomp.h File 516 B 0644
sections.h File 155 B 0644
segment.h File 93 B 0644
serial.h File 147 B 0644
set_memory.h File 779 B 0644
setup.h File 4.44 KB 0644
shmparam.h File 285 B 0644
signal.h File 644 B 0644
sigp.h File 1.8 KB 0644
smp.h File 2.45 KB 0644
sparsemem.h File 214 B 0644
spinlock.h File 3.53 KB 0644
spinlock_types.h File 437 B 0644
stp.h File 1.26 KB 0644
string.h File 4.5 KB 0644
switch_to.h File 1.37 KB 0644
syscall.h File 2.63 KB 0644
sysinfo.h File 4.22 KB 0644
termios.h File 685 B 0644
thread_info.h File 3.15 KB 0644
timex.h File 6.15 KB 0644
tlb.h File 5.71 KB 0644
tlbflush.h File 3.52 KB 0644
topology.h File 2.69 KB 0644
uaccess.h File 6.57 KB 0644
unistd.h File 1.03 KB 0644
uprobes.h File 588 B 0644
user.h File 3.3 KB 0644
vdso.h File 1.8 KB 0644
vga.h File 170 B 0644
vtime.h File 182 B 0644
vtimer.h File 866 B 0644
vx-insn.h File 10.66 KB 0644
xor.h File 454 B 0644