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17 Commits

Author SHA1 Message Date
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