diff options
| author | Victor L. Do Nascimento <victor.donascimento@arm.com> | 2022-12-21 14:28:01 +0300 |
|---|---|---|
| committer | Richard Earnshaw <rearnsha@arm.com> | 2023-01-10 17:16:05 +0300 |
| commit | adc36ede1137a0c792e0281cef01e7750f866ac5 (patch) | |
| tree | 418cb3b7aa8cc31f3a0c3b683c4b730699025637 /newlib | |
| parent | bddfd64ec2e94973d6372f90fe9a8a7b0f882e69 (diff) | |
newlib: libc: aeabi_memset 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.
Diffstat (limited to 'newlib')
| -rw-r--r-- | newlib/libc/machine/arm/aeabi_memset-thumb2.S | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/newlib/libc/machine/arm/aeabi_memset-thumb2.S b/newlib/libc/machine/arm/aeabi_memset-thumb2.S index eaca1d8d7..6b77d3820 100644 --- a/newlib/libc/machine/arm/aeabi_memset-thumb2.S +++ b/newlib/libc/machine/arm/aeabi_memset-thumb2.S @@ -26,14 +26,18 @@ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +#include "arm_asm.h" + .thumb .syntax unified .global __aeabi_memset .type __aeabi_memset, %function + .fnstart + .cfi_startproc ASM_ALIAS __aeabi_memset4 __aeabi_memset ASM_ALIAS __aeabi_memset8 __aeabi_memset __aeabi_memset: - push {r4, r5, r6} + prologue 4 6 lsls r4, r0, #30 beq 10f subs r4, r1, #1 @@ -98,10 +102,14 @@ __aeabi_memset: cmp r3, r4 bne 8b 9: - pop {r4, r5, r6} - bx lr + .cfi_remember_state + epilogue 4 6 10: + .cfi_restore_state mov r4, r1 mov r3, r0 b 3b + .cfi_endproc + .cantunwind + .fnend .size __aeabi_memset, . - __aeabi_memset |