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opnsense-src/sys/arm/include
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Ed Schouten fa878ec311 Make it possible to safely use TPIDRURW from userspace. 
On amd64, arm64 and i386, we have the possibility to switch between TLS
areas in userspace. The nice thing about this is that it makes it easier
to do light-weight threading, if we ever feel like doing that. On armv6,
let's go into the same direction by making it possible to safely use the
TPIDRURW register, which is intended for this purpose.

Clean up the ARMv6 code to remove md_tp entirely. Simply add a dedicated
field to the PCB to hold the value of TPIDRURW across context switches,
like we do for any other register. As userspace currently uses the
read-only TPIDRURO register, simply ensure that we keep both values in
sync where possible. The system calls for modifying the read-only
register will simply write the intended value into both registers, so
that it lazily ends up in the PCB during the next context switch.

Reviewed by:	https://reviews.freebsd.org/D7951
Approved by:	andrew
Reviewed by:	imp
Differential Revision:	https://reviews.freebsd.org/D7951
2016-09-22 08:14:59 +00:00
..
_align.h Disable alignment faults on armv6, adjust various alignment-related macros 2016-05-26 00:03:23 +00:00
_bus.h
_inttypes.h The NetBSD Foundation has granted permission to remove clauses 3 and 4. 2010-02-16 21:59:17 +00:00
_limits.h Fix types of some values in machine/_limits.h. 2011-01-08 11:13:34 +00:00
_stdint.h ARM: Remove trailing whitespace from sys/arm/include 2015-11-10 12:02:41 +00:00
_types.h Undo r302601, WCHAR_MAX may not be a valid wchar value. 2016-07-12 04:20:44 +00:00
acle-compat.h From https://sourceware.org/ml/newlib/2014/msg00113.html 2014-08-14 04:20:13 +00:00
armreg.h Start to clean MIDR values using the CPUID scheme. We don't need to know 2016-06-07 18:50:36 +00:00
asm.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
asmacros.h opt_global.h is included automatically in the build. No need to 2014-11-18 17:06:56 +00:00
at91_gpio.h Add userland access to at91 gpio functionality via ioctl calls. Also, 2013-03-29 19:52:57 +00:00
atags.h ARM: Fix ATAG handling in LINUX_BOOT_API: 2016-03-26 06:57:36 +00:00
atomic-v4.h Implement atomic_cmpset_acq_64 and atomic_cmpset_rel_64 on arm and armeb. 2016-05-18 13:09:52 +00:00
atomic-v6.h ARM: Implement atomic_swap_int(9). It's used in DRM2 code. 2015-11-28 12:12:28 +00:00
atomic.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
blockio.h trim trailing whitespace 2012-06-13 05:02:51 +00:00
board.h ARM: Remove trailing whitespace from sys/arm/include 2015-11-10 12:02:41 +00:00
bus.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
bus_dma.h Eliminate the last dregs of the old global arm_root_dma_tag. 2015-11-02 22:49:39 +00:00
clock.h
counter.h Use atomic_load/store_64() in the arm implementation of counter(9), and 2014-08-01 23:06:38 +00:00
cpu-v4.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
cpu-v6.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
cpu.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
cpuconf.h ARM: Remove support for xscale i80219 and i80321 CPUs. We haven't single 2016-02-03 09:15:44 +00:00
cpufunc.h ARM: Use new ARMv6 naming conventions for cache and TLB functions 2016-02-05 14:57:41 +00:00
cpuinfo.h Set the correct values in the arm aux control register, based on chip type. 2015-10-19 19:18:02 +00:00
db_machdep.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
debug_monitor.h Improve ARM debug_monitor for SMP machines 2016-05-29 17:35:38 +00:00
disassem.h ARM: Remove trailing whitespace from sys/arm/include 2015-11-10 12:02:41 +00:00
dump.h Factor out duplicated code from dumpsys() on each architecture into generic 2015-01-07 01:01:39 +00:00
efi.h Add a way for the architecture to specify the calling ABI for methods 2016-09-21 10:35:44 +00:00
elf.h Move/add ARM ELF PHDR types to elf_common.h 2016-08-02 20:26:04 +00:00
endian.h ARM: Remove trailing whitespace from sys/arm/include 2015-11-10 12:02:41 +00:00
exec.h
fdt.h Import ARM_INTRNG, the "next generation" interrupt architecture for arm 2015-10-18 18:26:19 +00:00
fiq.h
float.h Rationalize BSD license on sys/*/include/float.h 2015-08-05 17:05:35 +00:00
floatingpoint.h
fp.h VFP fixes/cleanups for ARM11: 2014-03-29 14:35:36 +00:00
frame.h Make it possible to safely use TPIDRURW from userspace. 2016-09-22 08:14:59 +00:00
gdb_machdep.h
ieee.h On ARM EABI double precision floating point values are stored in the 2013-09-07 14:04:10 +00:00
ieeefp.h People porting FreeBSD to new architectures ought not have to 2011-10-21 06:41:46 +00:00
in_cksum.h Delete stray clause 3 and renumber. 2015-03-13 02:49:55 +00:00
intr.h Rename ARM_INTRNG and MIPS_INTRNG to INTRNG. This will help with machine 2016-04-15 16:05:41 +00:00
kdb.h ARM: Use new ARMv6 naming conventions for cache and TLB functions 2016-02-05 14:57:41 +00:00
limits.h
machdep.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
md_var.h Implement userspace gettimeofday(2) with HPET timecounter. 2016-08-17 09:52:09 +00:00
memdev.h Add reader/writer lock around mem_range_attr_get() and mem_range_attr_set(). 2011-01-17 22:58:28 +00:00
metadata.h Add support to the efi boot1 and loader for 32-bit ARM. This will be used 2015-04-06 15:50:20 +00:00
minidump.h Add mmu format info into ARM vmcore. 2016-01-15 18:53:06 +00:00
ofw_machdep.h Allow us to be told about memory past the first 4GB point, but ignore it. 2016-01-25 23:04:40 +00:00
param.h Revert the recent armv6 changes to ALIGNED_POINTER(), restoring the 2016-06-21 17:53:42 +00:00
pcb.h Make PCB structure binary compatible for old and new PMAP on ARM 2015-11-17 13:09:51 +00:00
pcpu.h Make it possible to safely use TPIDRURW from userspace. 2016-09-22 08:14:59 +00:00
physmem.h Allow us to be told about memory past the first 4GB point, but ignore it. 2016-01-25 23:04:40 +00:00
pl310.h Make pl310_print_config static, it's not called out of pl310.c 2015-11-17 11:26:35 +00:00
platform.h When the initarm_* routines were renamed to platform_* and moved to their 2014-08-17 02:56:58 +00:00
platformvar.h Add a MULTIDELAY option to allow the ARM kernel to have multiple DELAY 2016-04-30 17:27:33 +00:00
pmap-v4.h Rename pte.h to pte-v4.h and start including directly either pte-v4.h 2016-02-19 09:23:32 +00:00
pmap-v6.h Remove not used definitions and fix some style nits. 2016-02-19 10:32:17 +00:00
pmap.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
pmap_var.h Don't use atomic operations for page table entries and handle access 2016-04-22 06:32:27 +00:00
pmc_mdep.h Rather than defining our own magic checks here use INKERNEL() for 2015-03-27 08:47:16 +00:00
proc.h Make it possible to safely use TPIDRURW from userspace. 2016-09-22 08:14:59 +00:00
profile.h Stop using load-multiple with lr and pc. This has been deprecated in ARMv7 2015-01-31 19:55:12 +00:00
psl.h Fix arm build. 2014-01-06 17:16:27 +00:00
pte-v4.h Rename pte.h to pte-v4.h and start including directly either pte-v4.h 2016-02-19 09:23:32 +00:00
pte-v6.h Remove AP_KRW definition not needed after r295801. 2016-02-19 09:52:11 +00:00
ptrace.h
reg.h SMP support for ARMv6/v7 HW watchpoints 2016-01-28 12:43:58 +00:00
reloc.h
resource.h ARM: Define PCI_RES_BUS resource for platforms having NEW_PCIB enabled. 2015-12-02 14:24:14 +00:00
runq.h
sc_machdep.h Piggyback MIPS changes and add ARM syscons support for devices with 2012-08-25 23:59:31 +00:00
setjmp.h Merge in changes from NetBSD: 2013-06-08 07:16:22 +00:00
sf_buf.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
sigframe.h
signal.h Don't use an empty struct. 2013-03-11 10:56:46 +00:00
smp.h Rename ARM_INTRNG and MIPS_INTRNG to INTRNG. This will help with machine 2016-04-15 16:05:41 +00:00
stack.h Allow the ARM unwinder to work through modules. This will be used to add 2015-02-19 12:06:57 +00:00
stdarg.h
swi.h
sysarch.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
sysreg.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
trap.h Move the check to see if we are tracing a function with the DTrace Function 2015-12-05 09:32:36 +00:00
ucontext.h Remove NetBSD implementation details not relevant to FreeBSD. 2014-05-23 00:21:02 +00:00
undefined.h Remove #include <machine/frame.h> from all the arm code that doesn't 2013-10-27 01:34:10 +00:00
utrap.h
vdso.h Implement userspace gettimeofday(2) with HPET timecounter. 2016-08-17 09:52:09 +00:00
vfp.h Treat synchronous VFP exception just like aynchronous: as an FP exception, 2015-11-01 21:59:56 +00:00
vm.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
vmparam.h Move arm's devmap to some generic place, so it can be used 2016-04-26 11:53:37 +00:00