kernel.git/arch/loongarch/kernel/fpu.S, branch linux-6.0.yHosts the 0x221E linux distro kernel.
https://git.0xinfinity.dev/distro/kernel.git/atom?h=linux-6.0.y2022-07-29T10:22:32ZLoongArch: Re-tab the assembly files2022-07-29T10:22:32ZWANG Xuerui2022-07-26T15:57:22Zurn:sha1:f5c3c22f21b6a002e371afdcc9180a2fa47dc267
Reflow the *.S files for better stylistic consistency, namely hard tabs
after mnemonic position, and vertical alignment of the first operand
with hard tabs. Tab width is obviously 8. Some pre-existing intra-block
vertical alignments are preserved.
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
LoongArch: Use the "jr" pseudo-instruction where applicable2022-07-29T10:22:32ZWANG Xuerui2022-07-26T15:57:17Zurn:sha1:07b480695d24d1c9f27bb60fd4b980ae87e8bc1e
Some of the assembly code in the LoongArch port likely originated
from a time when the assembler did not support pseudo-instructions like
"move" or "jr", so the desugared form was used and readability suffers
(to a minor degree) as a result.
As the upstream toolchain supports these pseudo-instructions from the
beginning, migrate the existing few usages to them for better
readability.
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
LoongArch: Remove obsolete mentions of vcsr2022-07-07T09:41:01ZQi Hu2022-07-06T11:29:37Zurn:sha1:112380996ac22e428264cd7186722e784db887e4
The `vcsr` only exists in the old hardware design, it isn't used in any
shipped hardware from Loongson-3A5000 on. Both scalar FP and LSX/LASX
instructions use the `fcsr` as their control and status registers now.
For example, the RM control bit in fcsr0 is shared by FP, LSX and LASX
instructions.
Particularly, fcsr16 to fcsr31 are reserved for LSX/LASX now, access to
these registers has no visible effect if LSX/LASX is enabled, and will
cause SXD/ASXD exceptions if LSX/LASX is not enabled.
So, mentions of vcsr are obsolete in the first place (it was just used
for debugging), let's remove them.
Reviewed-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Qi Hu <huqi@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
LoongArch: Add process management2022-06-03T12:09:28ZHuacai Chen2022-05-31T10:04:11Zurn:sha1:803b0fc5c3f2baa6e54978cd576407896f789b08
Add process management support for LoongArch, including: thread info
definition, context switch and process tracing.
Reviewed-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>