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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __SPARC64_SWITCH_TO_64_H
#define __SPARC64_SWITCH_TO_64_H

#include <asm/visasm.h>

#define prepare_arch_switch(next)		\
do {						\
	flushw_all();				\
} while (0)

	/* See what happens when you design the chip correctly?
	 *
	 * We tell gcc we clobber all non-fixed-usage registers except
	 * for l0/l1.  It will use one for 'next' and the other to hold
	 * the output value of 'last'.  'next' is not referenced again
	 * past the invocation of switch_to in the scheduler, so we need
	 * not preserve it's value.  Hairy, but it lets us remove 2 loads
	 * and 2 stores in this critical code path.  -DaveM
	 */
#define switch_to(prev, next, last)					\
do {	save_and_clear_fpu();						\
	/* If you are tempted to conditionalize the following */	\
	/* so that ASI is only written if it changes, think again. */	\
	__asm__ __volatile__("wr %%g0, %0, %%asi"			\
	: : "r" (task_thread_info(next)->current_ds));\
	trap_block[current_thread_info()->cpu].thread =			\
		task_thread_info(next);					\
	__asm__ __volatile__(						\
	"mov	%%g4, %%g7\n\t"						\
	"stx	%%i6, [%%sp + 2047 + 0x70]\n\t"				\
	"stx	%%i7, [%%sp + 2047 + 0x78]\n\t"				\
	"rdpr	%%wstate, %%o5\n\t"					\
	"stx	%%o6, [%%g6 + %6]\n\t"					\
	"stb	%%o5, [%%g6 + %5]\n\t"					\
	"rdpr	%%cwp, %%o5\n\t"					\
	"stb	%%o5, [%%g6 + %8]\n\t"					\
	"wrpr	%%g0, 15, %%pil\n\t"					\
	"mov	%4, %%g6\n\t"						\
	"ldub	[%4 + %8], %%g1\n\t"					\
	"wrpr	%%g1, %%cwp\n\t"					\
	"ldx	[%%g6 + %6], %%o6\n\t"					\
	"ldub	[%%g6 + %5], %%o5\n\t"					\
	"ldub	[%%g6 + %7], %%o7\n\t"					\
	"wrpr	%%o5, 0x0, %%wstate\n\t"				\
	"ldx	[%%sp + 2047 + 0x70], %%i6\n\t"				\
	"ldx	[%%sp + 2047 + 0x78], %%i7\n\t"				\
	"ldx	[%%g6 + %9], %%g4\n\t"					\
	"wrpr	%%g0, 14, %%pil\n\t"					\
	"brz,pt %%o7, switch_to_pc\n\t"					\
	" mov	%%g7, %0\n\t"						\
	"sethi	%%hi(ret_from_fork), %%g1\n\t"				\
	"jmpl	%%g1 + %%lo(ret_from_fork), %%g0\n\t"			\
	" nop\n\t"							\
	".globl switch_to_pc\n\t"					\
	"switch_to_pc:\n\t"						\
	: "=&r" (last), "=r" (current), "=r" (current_thread_info_reg),	\
	  "=r" (__local_per_cpu_offset)					\
	: "0" (task_thread_info(next)),					\
	  "i" (TI_WSTATE), "i" (TI_KSP), "i" (TI_NEW_CHILD),            \
	  "i" (TI_CWP), "i" (TI_TASK)					\
	: "cc",								\
	        "g1", "g2", "g3",                   "g7",		\
	        "l1", "l2", "l3", "l4", "l5", "l6", "l7",		\
	  "i0", "i1", "i2", "i3", "i4", "i5",				\
	  "o0", "o1", "o2", "o3", "o4", "o5",       "o7");		\
} while(0)

void synchronize_user_stack(void);
struct pt_regs;
void fault_in_user_windows(struct pt_regs *);

#endif /* __SPARC64_SWITCH_TO_64_H */

Filemanager

Name Type Size Permission Actions
Kbuild File 491 B 0644
agp.h File 434 B 0644
apb.h File 1.06 KB 0644
asm-offsets.h File 35 B 0644
asm-prototypes.h File 727 B 0644
asm.h File 1.08 KB 0644
asmmacro.h File 1.16 KB 0644
atomic.h File 219 B 0644
atomic_32.h File 2.26 KB 0644
atomic_64.h File 3.34 KB 0644
auxio.h File 310 B 0644
auxio_32.h File 2.55 KB 0644
auxio_64.h File 3.18 KB 0644
backoff.h File 2.7 KB 0644
barrier.h File 223 B 0644
barrier_32.h File 160 B 0644
barrier_64.h File 1.96 KB 0644
bbc.h File 9.76 KB 0644
bitext.h File 631 B 0644
bitops.h File 219 B 0644
bitops_32.h File 2.79 KB 0644
bitops_64.h File 1.64 KB 0644
btext.h File 145 B 0644
bug.h File 588 B 0644
bugs.h File 404 B 0644
cache.h File 649 B 0644
cacheflush.h File 373 B 0644
cacheflush_32.h File 1.97 KB 0644
cacheflush_64.h File 2.56 KB 0644
cachetlb_32.h File 882 B 0644
chafsr.h File 9.48 KB 0644
checksum.h File 227 B 0644
checksum_32.h File 6.81 KB 0644
checksum_64.h File 4.4 KB 0644
chmctrl.h File 7.91 KB 0644
clock.h File 231 B 0644
clocksource.h File 407 B 0644
cmpxchg.h File 223 B 0644
cmpxchg_32.h File 2.4 KB 0644
cmpxchg_64.h File 5.13 KB 0644
compat.h File 6.45 KB 0644
compat_signal.h File 565 B 0644
contregs.h File 1.9 KB 0644
cpu_type.h File 579 B 0644
cpudata.h File 378 B 0644
cpudata_32.h File 729 B 0644
cpudata_64.h File 1.13 KB 0644
current.h File 991 B 0644
dcr.h File 728 B 0644
dcu.h File 1.48 KB 0644
delay.h File 215 B 0644
delay_32.h File 907 B 0644
delay_64.h File 403 B 0644
device.h File 565 B 0644
dma-mapping.h File 632 B 0644
dma.h File 6.6 KB 0644
ebus_dma.h File 1.07 KB 0644
ecc.h File 4.34 KB 0644
eeprom.h File 254 B 0644
elf.h File 207 B 0644
elf_32.h File 3.19 KB 0644
elf_64.h File 6.47 KB 0644
estate.h File 2.23 KB 0644
extable_64.h File 727 B 0644
fb.h File 680 B 0644
fbio.h File 2.26 KB 0644
fhc.h File 4.43 KB 0644
floppy.h File 219 B 0644
floppy_32.h File 9.74 KB 0644
floppy_64.h File 18.83 KB 0644
fpumacro.h File 710 B 0644
ftrace.h File 800 B 0644
futex.h File 215 B 0644
futex_32.h File 82 B 0644
futex_64.h File 2.15 KB 0644
hardirq.h File 223 B 0644
hardirq_32.h File 334 B 0644
hardirq_64.h File 417 B 0644
head.h File 211 B 0644
head_32.h File 2.56 KB 0644
head_64.h File 2.13 KB 0644
hibernate.h File 421 B 0644
highmem.h File 2.02 KB 0644
hugetlb.h File 2.09 KB 0644
hvtramp.h File 782 B 0644
hw_irq.h File 88 B 0644
hypervisor.h File 110.71 KB 0644
ide.h File 2.19 KB 0644
idprom.h File 656 B 0644
intr_queue.h File 794 B 0644
io-unit.h File 2.41 KB 0644
io.h File 620 B 0644
io_32.h File 3.51 KB 0644
io_64.h File 10.66 KB 0644
ioctls.h File 358 B 0644
iommu.h File 215 B 0644
iommu_32.h File 5.73 KB 0644
iommu_64.h File 2.43 KB 0644
irq.h File 207 B 0644
irq_32.h File 526 B 0644
irq_64.h File 3.06 KB 0644
irqflags.h File 227 B 0644
irqflags_32.h File 1.03 KB 0644
irqflags_64.h File 1.91 KB 0644
jump_label.h File 1.01 KB 0644
kdebug.h File 219 B 0644
kdebug_32.h File 1.99 KB 0644
kdebug_64.h File 393 B 0644
kgdb.h File 1014 B 0644
kmap_types.h File 233 B 0644
kprobes.h File 1.41 KB 0644
ldc.h File 4.37 KB 0644
leon.h File 7.37 KB 0644
leon_amba.h File 8.09 KB 0644
leon_pci.h File 512 B 0644
lsu.h File 1.04 KB 0644
machines.h File 1.5 KB 0644
mbus.h File 2.93 KB 0644
mc146818rtc.h File 298 B 0644
mc146818rtc_32.h File 699 B 0644
mc146818rtc_64.h File 689 B 0644
mdesc.h File 2.99 KB 0644
memctrl.h File 311 B 0644
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mmu.h File 207 B 0644
mmu_32.h File 209 B 0644
mmu_64.h File 3.14 KB 0644
mmu_context.h File 239 B 0644
mmu_context_32.h File 1.07 KB 0644
mmu_context_64.h File 4.15 KB 0644
mmzone.h File 393 B 0644
msi.h File 774 B 0644
mxcc.h File 4.33 KB 0644
nmi.h File 354 B 0644
ns87303.h File 3.22 KB 0644
obio.h File 6.26 KB 0644
openprom.h File 7.3 KB 0644
oplib.h File 215 B 0644
oplib_32.h File 5.92 KB 0644
oplib_64.h File 8.12 KB 0644
page.h File 274 B 0644
page_32.h File 3.91 KB 0644
page_64.h File 4.49 KB 0644
parport.h File 5.68 KB 0644
pbm.h File 1.47 KB 0644
pci.h File 207 B 0644
pci_32.h File 1.09 KB 0644
pci_64.h File 1.49 KB 0644
pcic.h File 5.77 KB 0644
pcr.h File 1.85 KB 0644
percpu.h File 219 B 0644
percpu_32.h File 168 B 0644
percpu_64.h File 515 B 0644
perf_event.h File 802 B 0644
pgalloc.h File 223 B 0644
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pgalloc_64.h File 2.85 KB 0644
pgtable.h File 223 B 0644
pgtable_32.h File 11.35 KB 0644
pgtable_64.h File 30.71 KB 0644
pgtsrmmu.h File 6.05 KB 0644
pil.h File 1.08 KB 0644
processor.h File 231 B 0644
processor_32.h File 3.13 KB 0644
processor_64.h File 7.58 KB 0644
prom.h File 2.02 KB 0644
psr.h File 1.38 KB 0644
ptrace.h File 4.19 KB 0644
qrwlock.h File 205 B 0644
qspinlock.h File 215 B 0644
ross.h File 5.52 KB 0644
sbi.h File 3.34 KB 0644
scratchpad.h File 547 B 0644
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sections.h File 289 B 0644
setup.h File 1.52 KB 0644
sfafsr.h File 3.14 KB 0644
sfp-machine.h File 239 B 0644
sfp-machine_32.h File 6.79 KB 0644
sfp-machine_64.h File 3.1 KB 0644
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smp_64.h File 1.84 KB 0644
sparsemem.h File 349 B 0644
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spinlock_32.h File 4.22 KB 0644
spinlock_64.h File 409 B 0644
spinlock_types.h File 549 B 0644
spitfire.h File 9.73 KB 0644
stacktrace.h File 166 B 0644
starfire.h File 418 B 0644
string.h File 1.13 KB 0644
string_32.h File 405 B 0644
string_64.h File 505 B 0644
sunbpp.h File 3.27 KB 0644
swift.h File 3.07 KB 0644
switch_to.h File 231 B 0644
switch_to_32.h File 3.53 KB 0644
switch_to_64.h File 2.58 KB 0644
syscall.h File 3.41 KB 0644
syscalls.h File 307 B 0644
termbits.h File 198 B 0644
termios.h File 4.94 KB 0644
thread_info.h File 239 B 0644
thread_info_32.h File 3.66 KB 0644
thread_info_64.h File 7.84 KB 0644
timer.h File 215 B 0644
timer_32.h File 1.18 KB 0644
timer_64.h File 2.37 KB 0644
timex.h File 215 B 0644
timex_32.h File 266 B 0644
timex_64.h File 423 B 0644
tlb.h File 207 B 0644
tlb_32.h File 520 B 0644
tlb_64.h File 913 B 0644
tlbflush.h File 227 B 0644
tlbflush_32.h File 621 B 0644
tlbflush_64.h File 1.73 KB 0644
topology.h File 227 B 0644
topology_32.h File 170 B 0644
topology_64.h File 1.51 KB 0644
trap_block.h File 6.51 KB 0644
traps.h File 577 B 0644
tsb.h File 12.17 KB 0644
tsunami.h File 1.85 KB 0644
ttable.h File 20.08 KB 0644
turbosparc.h File 3.78 KB 0644
uaccess.h File 363 B 0644
uaccess_32.h File 8.31 KB 0644
uaccess_64.h File 6.05 KB 0644
unaligned.h File 339 B 0644
unistd.h File 1.37 KB 0644
upa.h File 3.72 KB 0644
uprobes.h File 1.86 KB 0644
user.h File 102 B 0644
vaddrs.h File 2.02 KB 0644
vdso.h File 662 B 0644
vga.h File 964 B 0644
viking.h File 8.14 KB 0644
vio.h File 11.81 KB 0644
visasm.h File 1.51 KB 0644
vvar.h File 1.52 KB 0644
winmacro.h File 4.66 KB 0644
xor.h File 207 B 0644
xor_32.h File 7.31 KB 0644
xor_64.h File 2.5 KB 0644