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c7b25f3512
freebsd-skq/sys/mips
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adrian c7b25f3512 [mips] add support for using the MIPS user register for TLS data. 
This work, originally from Stacey Son, uses the MIPS UserReg for
reading the TLS data, and will fall back to the normal syscall path
when it isn't supported.

This code dynamically patches cpu_switch() to bypass the UserReg
instruction so to avoid generating a machine exception.

Thanks to sson for the original work, and to Dan Nelson for
bringing it to date and testing it on MIPS32 with me.

Tested:

* mips64 (sson)
* mips74k (dnelson_1901@yahoo.com) - AR9344 SoC, UserReg support
* mips24k (adrian) - AR9331 SoC, no UserReg support

Obtained from:	sson, dnelson_1901@yahoo.com
2016-08-07 01:29:55 +00:00
..
adm5120 Remove NULL checks after M_WAITOK allocations from sys/mips/. 2016-05-11 09:42:24 +00:00
alchemy Remove NULL checks after M_WAITOK allocations from sys/mips/. 2016-05-11 09:42:24 +00:00
atheros [arge] add some extra MDIO debugging support 2016-08-05 17:16:35 +00:00
beri Fix the resource_list_print_type() calls to use uintmax_t. 2016-03-22 22:25:08 +00:00
broadcom [mips/broadcom] Fetch UART console configuration from CFE. 2016-08-01 16:29:32 +00:00
cavium sys: use our roundup2/rounddown2() macros when param.h is available. 2016-04-21 19:57:40 +00:00
conf [ar934x] add tap/tun as modules, for people who wish to use VPNs. 2016-08-05 17:17:36 +00:00
gxemul Add 32-bit support for Gxemul's oldtestmips machine emulation 2013-09-04 20:34:36 +00:00
idt Remove NULL checks after M_WAITOK allocations from sys/mips/. 2016-05-11 09:42:24 +00:00
include [mips] add support for using the MIPS user register for TLS data. 2016-08-07 01:29:55 +00:00
malta Fixed FreeBSD/mips MALTA support for QEMU 2016-06-29 23:33:44 +00:00
mediatek Build etherswitch support for appropriate Ralink/Mediatek SoCs 2016-05-25 06:47:28 +00:00
mips [mips] add support for using the MIPS user register for TLS data. 2016-08-07 01:29:55 +00:00
nlm Add a bus_null_rescan() method that always fails with an error. 2016-04-27 17:49:42 +00:00
rmi sys: use our roundup2/rounddown2() macros when param.h is available. 2016-04-21 19:57:40 +00:00
rt305x Remove NULL checks after M_WAITOK allocations from sys/mips/. 2016-05-11 09:42:24 +00:00
sibyte sys: use our roundup2/rounddown2() macros when param.h is available. 2016-04-21 19:57:40 +00:00