Ryan Libby 6d1a70dd0a amd64 atomic.h: minor codegen optimization in flag access ... Previously the pattern to extract status flags from inline assembly blocks was to use setcc in the block to write the flag to a register. This was suboptimal in a few ways: - It would lead to code like: sete %cl; test %cl; jne, i.e. a flag would just be loaded into a register and then reloaded to a flag. - The setcc would force the block to use an additional register. - If the client code didn't care for the flag value then the setcc would be entirely pointless but could not be eliminated by the optimizer. A more modern inline asm construct (since gcc 6 and clang 9) allows for "flag output operands", where a C variable can be written directly from a flag. The optimizer can then use this to produce direct code where the flag does not take a trip through a register. In practice this makes each affected operation sequence shorter by five bytes of instructions. It's unlikely this has a measurable performance impact. Reviewed by: kib, markj, mjg Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D23869		2020-02-28 18:32:36 +00:00
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pc	sys/amd64: further adoption of SPDX licensing ID tags.	2017-11-27 15:03:07 +00:00
xen
_align.h
_bus.h	Regularize my copyright notice	2019-12-04 16:56:11 +00:00
_inttypes.h
_limits.h
_stdint.h
_types.h
acpica_machdep.h
apm_bios.h
asm.h	amd64: Add CFI directives for libc syscall stubs	2019-10-23 19:03:03 +00:00
asmacros.h	amd64: prevents speculations over swapgs reload of %gs base.	2019-08-06 16:53:25 +00:00
atomic.h	amd64 atomic.h: minor codegen optimization in flag access	2020-02-28 18:32:36 +00:00
bus_dma.h	sys/amd64: further adoption of SPDX licensing ID tags.	2017-11-27 15:03:07 +00:00
bus.h
clock.h	re-synchronize TSC-s on SMP systems after resume, if necessary	2018-05-25 07:33:20 +00:00
counter.h	amd64: provide custom zpcpu set/add/sub routines	2020-02-12 11:15:33 +00:00
cpu.h	Add a custom implementation of cpu_lock_delay() for x86.	2018-11-05 22:54:03 +00:00
cpufunc.h	amd64: plug spurious cld instructions	2019-10-08 21:14:11 +00:00
cputypes.h
csan.h	Add kcsan_md_unsupported from NetBSD.	2019-11-21 13:22:23 +00:00
db_machdep.h	Cleanups related to debug exceptions on x86.	2018-05-22 00:45:00 +00:00
dump.h
efi.h	amd64 ef_rt_arch_call: Preserve %rflags around call into EFI RT service.	2019-06-03 15:32:42 +00:00
elf.h
endian.h
exec.h	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
fdt.h
float.h
floatingpoint.h	spdx: initial adoption of licensing ID tags.	2017-11-18 14:26:50 +00:00
fpu.h	Remove unused error return from API that cannot fail	2018-02-23 20:15:19 +00:00
frame.h	PTI for amd64.	2018-01-17 11:44:21 +00:00
gdb_machdep.h	gdb(4):amd64: Bump MI GDB_BUFSZ for more efficient transfers	2019-08-22 00:35:17 +00:00
ieeefp.h	Resolve conflicts between macros in fenv.h and ieeefp.h	2018-05-31 20:22:47 +00:00
in_cksum.h	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
intr_machdep.h	Drop "All rights reserved" from my copyright statements.	2019-03-06 22:11:45 +00:00
iodev.h	sys/amd64: further adoption of SPDX licensing ID tags.	2017-11-27 15:03:07 +00:00
kdb.h	sys/amd64: further adoption of SPDX licensing ID tags.	2017-11-27 15:03:07 +00:00
limits.h	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
md_var.h	amd64: move pcb out of kstack to struct thread.	2019-10-25 20:09:42 +00:00
memdev.h	sys/amd64: further adoption of SPDX licensing ID tags.	2017-11-27 15:03:07 +00:00
metadata.h
minidump.h	sys/amd64: further adoption of SPDX licensing ID tags.	2017-11-27 15:03:07 +00:00
mp_watchdog.h	sys/amd64: further adoption of SPDX licensing ID tags.	2017-11-27 15:03:07 +00:00
nexusvar.h
npx.h
ofw_machdep.h
param.h	Define MAXCPU consistently between the kernel and KLDs.	2020-02-05 19:08:21 +00:00
pcb.h	Provide dummy definition of the amd64 struct pcb for -m32 compilation.	2019-10-26 18:22:52 +00:00
pci_cfgreg.h
pcpu_aux.h	amd64: move pcb out of kstack to struct thread.	2019-10-25 20:09:42 +00:00
pcpu.h	amd64: provide custom zpcpu set/add/sub routines	2020-02-12 11:15:33 +00:00
pmap.h	Introduce vm_page_astate.	2019-12-10 18:14:50 +00:00
pmc_mdep.h	hwpmc: ABI fixes	2018-06-04 02:05:48 +00:00
ppireg.h	sys/amd64: further adoption of SPDX licensing ID tags.	2017-11-27 15:03:07 +00:00
proc.h	amd64: move pcb out of kstack to struct thread.	2019-10-25 20:09:42 +00:00
procctl.h	amd64 KPTI: add control from procctl(2).	2019-03-16 11:44:33 +00:00
profile.h	Fix high resolution kernel profiling just enough to not crash at boot	2018-06-02 05:48:44 +00:00
psl.h
ptrace.h
pvclock.h
reg.h
reloc.h	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
resource.h
runq.h	sys/amd64: further adoption of SPDX licensing ID tags.	2017-11-27 15:03:07 +00:00
segments.h	amd64: move GDT into PCPU area.	2019-11-12 15:51:47 +00:00
setjmp.h
sf_buf.h	sys/amd64: further adoption of SPDX licensing ID tags.	2017-11-27 15:03:07 +00:00
sgx.h	Add support for Intel Software Guard Extensions (Intel SGX).	2017-08-16 10:38:06 +00:00
sgxreg.h	Add support for Intel Software Guard Extensions (Intel SGX).	2017-08-16 10:38:06 +00:00
sigframe.h
signal.h
smp.h	x86: improve reservation of AP trampoline memory	2018-04-05 14:39:51 +00:00
specialreg.h
stack.h
stdarg.h
sysarch.h
timerreg.h	sys/amd64: further adoption of SPDX licensing ID tags.	2017-11-27 15:03:07 +00:00
trap.h
tss.h	amd64: move common_tss into pcpu.	2019-11-10 09:28:18 +00:00
ucontext.h
vdso.h
vm.h	sys/amd64: further adoption of SPDX licensing ID tags.	2017-11-27 15:03:07 +00:00
vmm_dev.h	Tie the name limit of a VM to SPECNAMELEN from devfs instead of a	2019-07-12 18:37:56 +00:00
vmm_instruction_emul.h	Add a new variant of the GLA2GPA ioctl for use by the debug server.	2018-02-26 19:19:05 +00:00
vmm.h	bhyve: terminate waiting loops if thread suspension is requested.	2020-01-02 22:37:04 +00:00
vmparam.h	Fix some nits in pmap_page_array_startup().	2019-09-03 22:26:01 +00:00