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| author | Victor Do Nascimento <Victor.DoNascimento@arm.com> | 2022-08-03 11:49:19 +0100 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2022-08-03 11:49:19 +0100 |
| commit | 250db3398da6774290a75e099a7beaa4c940f079 (patch) | |
| tree | f53e8ba32a422081a4f37ca256e7043ef06f5670 /string | |
| parent | 3f5c5bc532c2d3781e8b080dfd1ec712a3978e8e (diff) | |
| download | arm-optimized-routines-250db3398da6774290a75e099a7beaa4c940f079.tar.gz | |
string: arm: Augument unwind information for PAC instructions
Add the `.cfi_register 143, 12' directive immediately after pac
instruction is emitted.
Ensures unwind info consumers know immediately that if they need
the PAC for the function, they can find it in ip register.
Diffstat (limited to 'string')
| -rw-r--r-- | string/arm/strlen-armv6t2.S | 1 | ||||
| -rw-r--r-- | string/pacbti.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/string/arm/strlen-armv6t2.S b/string/arm/strlen-armv6t2.S index e30ddd7..2601d03 100644 --- a/string/arm/strlen-armv6t2.S +++ b/string/arm/strlen-armv6t2.S @@ -50,6 +50,7 @@ ENTRY (__strlen_armv6t2) #else pac ip, lr, sp #endif /* __ARM_FEATURE_BTI_DEFAULT */ + .cfi_register 143, 12 push {r4, r5, ip} .save {r4, r5, ra_auth_code} .cfi_def_cfa_offset 12 diff --git a/string/pacbti.h b/string/pacbti.h index 50d276a..9162b27 100644 --- a/string/pacbti.h +++ b/string/pacbti.h @@ -20,6 +20,7 @@ #else pac ip, lr, sp #endif /* __ARM_FEATURE_BTI_DEFAULT */ + .cfi_register 143, 12 str ip, [sp, #-4]! .save {ra_auth_code} .cfi_def_cfa_offset 4 |