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20 commits

Author SHA1 Message Date
anjiahao
603c87977f libc/machine:Add prefixes to libc functions implemented by arch 
kasan does not instrument the assembly function,
so it is checked in advance before calling.
If Kasan is not turned on, the speed and space will
be almost unchanged under compiler optimization.

Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2024-10-31 18:11:16 +08:00
Alin Jerpelea
6b5dddd5d7 libs/libc: migrate to SPDX identifier 
Most tools used for compliance and SBOM generation use SPDX identifiers
This change brings us a step closer to an easy SBOM generation.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
 2024-10-01 12:25:52 +08:00
anjiahao
e085f0ee80 armv8-m:arch libc function need save ip register use pacbti 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2024-09-19 03:50:53 +08:00
chao an
3d57055057 libc/arm: add support of PACBTI 
Reference:
https://developer.arm.com/documentation/100748/0617/Security-features-supported-in-Arm-Compiler-for-Embedded/PACBTI-M-extension-mitigations-against-ROP-and-JOP-style-attacks
https://developer.arm.com/documentation/101754/0619/armclang-Reference/armclang-Command-line-Options/-mbranch-protection

Signed-off-by: chao an <anchao@xiaomi.com>
 2023-11-30 01:12:24 -08:00
chao an
29bda7cf27 libc/machine/arm: align related implementations of armv7 architecture 
1. sync arch elf changes
2. fix cmake compilation break
3. remove the definition of related math files

Signed-off-by: chao an <anchao@xiaomi.com>
 2023-11-29 19:04:30 -08:00
wangyongrong
2d817deecb armv8m/strcpy: add arch optimize version 2023-09-22 08:52:25 +08:00
yangdongdong
1956385a7d libs/libc: Breakdown LIBC_BUILD_STRING into specific string operations macro. 
Provide a way to only customize specific string operations,
such as for memcpy with the DMA capability by ROM.

Signed-off-by: yangdongdong <yangdongdong@xiaomi.com>
 2023-08-29 22:55:18 +08:00
zhangyuan21
699c401889 libc: update arm-m memset function 
Use the memset function in bionic for better performance.

Signed-off-by: zhangyuan21 <zhangyuan21@xiaomi.com>
 2023-08-03 21:15:50 -07:00
zhangyuan21
a10cc49e67 Revert "newlib: libc: memcpy M-profile PACBTI-enablement" 
This reverts commit 9fa097ab69.
 2023-08-03 07:03:39 -07:00
zhangyuan21
3625385541 arch_memcpy: Optimize arch memcpy for armv7-m and armv8-m 
Use ldm and stm instruction to optimize performance when
both src and dst are 32-bit aligned.

Signed-off-by: zhangyuan21 <zhangyuan21@xiaomi.com>
 2023-08-02 16:52:25 +02:00
Tiago Medicci Serrano
58e97e521c libc/string: prevent libc in the kernel/userspace optionally 
Add the `LIBC_PREVENT_STRING_KERNEL` and `LIBC_PREVENT_STRING_USER`
that are meant to be selected by the chip if no libc implementation
is going to be built. If selected, neither NuttX's software version
of the libc nor any architecture-specific implementation will be
built in the kernel or in the userspace, respectively. In this
case, the linker may provide a ROM-defined version of the libc
functions instead.
 2023-05-17 13:58:48 +08:00
chao an
d6747dd6ad libc/armv8-m: fix build break if MVE is disabled 
machine/arm/armv8-m/gnu/arch_memcpy.S: Assembler messages:
machine/arm/armv8-m/gnu/arch_memcpy.S:105: Error: bad instruction `prologue push_ip=HAVE_PAC_LEAF'
machine/arm/armv8-m/gnu/arch_memcpy.S:121: Error: bad instruction `epilogue push_ip=HAVE_PAC_LEAF'
make[1]: *** [Makefile:143: bin/arch_memcpy.o] Error

Signed-off-by: chao an <anchao@xiaomi.com>
 2023-05-05 08:07:08 +02:00
chao an
9fa097ab69 newlib: libc: memcpy M-profile PACBTI-enablement 
Add function prologue/epilogue to conditionally add BTI landing pads
and/or PAC code generation & authentication instructions depending on
compilation flags.

Signed-off-by: chao an <anchao@xiaomi.com>
 2023-04-28 09:51:52 +08:00
Xiang Xiao
2c5f653bfd Remove the tail spaces from all files except Documentation 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2023-02-26 13:24:24 -08:00
Fotis Panagiotopoulos
85ceb7920e Typo fixes. 2023-02-17 11:17:11 -03:00
zhangyuan21
650f17169a libc: add armv7-a armv7-m armv8-m libc function 
Porting memory and string optimize functions from newlib and bionic

Signed-off-by: zhangyuan21 <zhangyuan21@xiaomi.com>
 2023-01-10 11:31:26 +08:00
Huang Qi
cfff115f21 arm: Move setjmp to common place 
Since some Cortex A core supports thumb mode also,
thus they can share same implementation.

Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
 2022-03-08 21:00:29 +08:00
Oki Minabe
c1ea37742b fix arm FPSCR typos in comments. 2022-02-17 01:08:11 +08:00
Xiang Xiao
39fc9325cf arch/arm: Replace "b lr" or "mov pc, lr" with "bx lr" 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-04-05 05:50:14 -07:00
Xiang Xiao
d62ae03bf8 arch: Move setjmp/longjmp to libc/machine 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-04-04 16:30:37 -07:00