(nuttx) 05/07: armv8-m: Optimize cfi instructions to debug

[jiuzhudong]

This is an automated email from the ASF dual-hosted git repository.

jiuzhudong pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx.git

commit 0b6188bfa242cd5d7af5db141a79fd91f6ff06f7
Author: yangao1 <yang...@xiaomi.com>
AuthorDate: Mon May 12 20:54:44 2025 +0800

    armv8-m: Optimize cfi instructions to debug
    
    Signed-off-by: yangao1 <yang...@xiaomi.com>
---
 libs/libc/machine/arm/armv8-m/gnu/arch_memcpy.S  | 4 ++++
 libs/libc/machine/arm/armv8-m/gnu/arch_memmove.S | 3 +++
 libs/libc/machine/arm/armv8-m/gnu/arch_memset.S  | 4 ++++
 3 files changed, 11 insertions(+)

diff --git a/libs/libc/machine/arm/armv8-m/gnu/arch_memcpy.S 
b/libs/libc/machine/arm/armv8-m/gnu/arch_memcpy.S
index f503470986..a95474fce9 100644
--- a/libs/libc/machine/arm/armv8-m/gnu/arch_memcpy.S
+++ b/libs/libc/machine/arm/armv8-m/gnu/arch_memcpy.S
@@ -113,6 +113,8 @@ ARCH_LIBCFUN(memcpy):
        @ r0: dst
        @ r1: src
        @ r2: len
+       .cfi_sections .debug_frame
+       .cfi_startproc
 #if __ARM_FEATURE_PAC_DEFAULT
 #  if __ARM_FEATURE_BTI_DEFAULT
        pacbti  ip, lr, sp
@@ -123,6 +125,7 @@ ARCH_LIBCFUN(memcpy):
 #endif /* __ARM_FEATURE_PAC_DEFAULT */
 #ifdef __ARM_FEATURE_MVE
        mov     r3, lr
+       .cfi_register lr,r3
        wlstp.8 lr, r2, 2f
        mov     r2, r0
 1:
@@ -395,6 +398,7 @@ ARCH_LIBCFUN(memcpy):
 #endif /* __ARM_FEATURE_PAC_DEFAULT */
        bx      lr
 #endif
+       .cfi_endproc
        .size   ARCH_LIBCFUN(memcpy), .-ARCH_LIBCFUN(memcpy)
 
 #endif
diff --git a/libs/libc/machine/arm/armv8-m/gnu/arch_memmove.S 
b/libs/libc/machine/arm/armv8-m/gnu/arch_memmove.S
index e946061fd0..47c640caca 100644
--- a/libs/libc/machine/arm/armv8-m/gnu/arch_memmove.S
+++ b/libs/libc/machine/arm/armv8-m/gnu/arch_memmove.S
@@ -46,6 +46,8 @@
        .global ARCH_LIBCFUN(memmove)
        .type   ARCH_LIBCFUN(memmove), %function
 ARCH_LIBCFUN(memmove):
+       .cfi_sections .debug_frame
+       .cfi_startproc
 #if __ARM_FEATURE_PAC_DEFAULT
 #  if __ARM_FEATURE_BTI_DEFAULT
        pacbti  ip, lr, sp
@@ -88,6 +90,7 @@ ARCH_LIBCFUN(memmove):
        aut     ip, lr, sp
 #endif /* __ARM_FEATURE_PAC_DEFAULT */
        bx      lr
+       .cfi_endproc
        .size ARCH_LIBCFUN(memmove), . - ARCH_LIBCFUN(memmove)
 
 #endif
diff --git a/libs/libc/machine/arm/armv8-m/gnu/arch_memset.S 
b/libs/libc/machine/arm/armv8-m/gnu/arch_memset.S
index 424123b48c..7a232e60d9 100644
--- a/libs/libc/machine/arm/armv8-m/gnu/arch_memset.S
+++ b/libs/libc/machine/arm/armv8-m/gnu/arch_memset.S
@@ -72,6 +72,8 @@
        .global ARCH_LIBCFUN(memset)
        .type   ARCH_LIBCFUN(memset), %function
 ARCH_LIBCFUN(memset):
+       .cfi_sections .debug_frame
+       .cfi_startproc
 #if __ARM_FEATURE_PAC_DEFAULT
 #  if __ARM_FEATURE_BTI_DEFAULT
        pacbti  ip, lr, sp
@@ -82,6 +84,7 @@ ARCH_LIBCFUN(memset):
 #ifdef __ARM_FEATURE_MVE
        vdup.8  q0, r1
        mov     r3, lr
+       .cfi_register lr,r3
        mov     r1, r0
        wlstp.8 lr, r2, 2f
 1:
@@ -166,6 +169,7 @@ ARCH_LIBCFUN(memset):
        ldmfd   sp!, {r0, r4-r7, pc}
 #  endif /* __ARM_FEATURE_PAC_DEFAULT */
 #endif
+       .cfi_endproc
        .size ARCH_LIBCFUN(memset), . - ARCH_LIBCFUN(memset)
 
 #endif