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| author | Andrea Corallo <andrea.corallo@arm.com> | 2021-12-06 11:39:35 +0100 |
|---|---|---|
| committer | Andrea Corallo <andrea.corallo@arm.com> | 2023-01-23 11:25:47 +0100 |
| commit | 8ce721cd96ac2ec0c9194df35daa5aeae8541b7a (patch) | |
| tree | 2b768e9077fd16b75c5ce8721a8fa7a33e02ed4f | |
| parent | 14fab5fb9aa6432ca59fb02b7b82ac17093f4de2 (diff) | |
| download | gcc-8ce721cd96ac2ec0c9194df35daa5aeae8541b7a.zip gcc-8ce721cd96ac2ec0c9194df35daa5aeae8541b7a.tar.gz gcc-8ce721cd96ac2ec0c9194df35daa5aeae8541b7a.tar.bz2 | |
[PATCH 4/15] arm: Add testsuite library support for PACBTI target
Add targeting-checking entities for PACBTI in testsuite
framework.
Pre-approved with the requested changes here
<https://gcc.gnu.org/pipermail/gcc-patches/2021-December/586331.html>.
gcc/testsuite/ChangeLog
* lib/target-supports.exp:
(check_effective_target_arm_pacbti_hw): New.
gcc/ChangeLog:
* doc/sourcebuild.texi: Document arm_pacbti_hw.
Co-Authored-By: Tejas Belagod <tbelagod@arm.com>
| -rw-r--r-- | gcc/doc/sourcebuild.texi | 10 | ||||
| -rw-r--r-- | gcc/testsuite/lib/target-supports.exp | 16 |
2 files changed, 26 insertions, 0 deletions
diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi index e605707..be43182 100644 --- a/gcc/doc/sourcebuild.texi +++ b/gcc/doc/sourcebuild.texi @@ -2195,6 +2195,10 @@ ARM target supports options to generate instructions from ARMv8.1-M with the Custom Datapath Extension (CDE) and M-Profile Vector Extension (MVE). Some multilibs may be incompatible with these options. +@item arm_pacbti_hw +Test system supports executing Pointer Authentication and Branch Target +Identification instructions. + @item arm_prefer_ldrd_strd ARM target prefers @code{LDRD} and @code{STRD} instructions over @code{LDM} and @code{STM} instructions. @@ -2284,6 +2288,12 @@ ARM target generates Thumb-2 code for @code{-mthumb} but does not support executing the Armv8.1-M Mainline Low Overhead Loop instructions @code{DLS} and @code{LE}. +@item mbranch_protection_ok +ARM target supporting @code{-mbranch-protection=standard}. + +@item arm_pacbti_hw +Test system supports for executing non nop pacbti instructions. + @end table @subsubsection AArch64-specific attributes diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp index 38b9514..a9ee288 100644 --- a/gcc/testsuite/lib/target-supports.exp +++ b/gcc/testsuite/lib/target-supports.exp @@ -5218,6 +5218,22 @@ proc check_effective_target_arm_cmse_clear_ok {} { } "-mcmse"]; } +# Return 1 if the target supports executing PACBTI instructions, 0 +# otherwise. + +proc check_effective_target_arm_pacbti_hw {} { + return [check_runtime arm_pacbti_hw_available { + __attribute__ ((naked)) int + main (void) + { + asm ("pac r12, lr, sp"); + asm ("mov r0, #0"); + asm ("autg r12, lr, sp"); + asm ("bx lr"); + } + } "-march=armv8.1-m.main+pacbti+fp -mbranch-protection=standard -mthumb -mfloat-abi=hard"] +} + # Return 1 if this compilation turns on string_ops_prefer_neon on. proc check_effective_target_arm_tune_string_ops_prefer_neon { } { |