[clang] 5b7f928 - [PAC][clang] Add new features to pauthtest ABI (#113150)

[via cfe-commits]

Author: Daniil Kovalev
Date: 2025-09-16T06:51:20Z
New Revision: 5b7f92863a44a58e5ffab694a8e6733d9519b976

URL: https://github.com/llvm/llvm-project/commit/5b7f92863a44a58e5ffab694a8e6733d9519b976
DIFF: https://github.com/llvm/llvm-project/commit/5b7f92863a44a58e5ffab694a8e6733d9519b976.diff

LOG: [PAC][clang] Add new features to pauthtest ABI (#113150)

Enable init/fini address discrimination, type info vtable pointer
discrimination and AArch64 jump table hardening as part of pauthtest ABI.

Added: 
    

Modified: 
    clang/lib/Driver/ToolChains/Clang.cpp
    clang/test/Driver/aarch64-ptrauth.c

Removed: 
    


################################################################################
diff  --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index a72bdedd7317b..f84ab4f3932a3 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -1370,6 +1370,11 @@ static void handlePAuthABI(const ArgList &DriverArgs, ArgStringList &CC1Args) {
           options::OPT_fno_ptrauth_vtable_pointer_type_discrimination))
     CC1Args.push_back("-fptrauth-vtable-pointer-type-discrimination");
 
+  if (!DriverArgs.hasArg(
+          options::OPT_fptrauth_type_info_vtable_pointer_discrimination,
+          options::OPT_fno_ptrauth_type_info_vtable_pointer_discrimination))
+    CC1Args.push_back("-fptrauth-type-info-vtable-pointer-discrimination");
+
   if (!DriverArgs.hasArg(options::OPT_fptrauth_indirect_gotos,
                          options::OPT_fno_ptrauth_indirect_gotos))
     CC1Args.push_back("-fptrauth-indirect-gotos");
@@ -1377,6 +1382,15 @@ static void handlePAuthABI(const ArgList &DriverArgs, ArgStringList &CC1Args) {
   if (!DriverArgs.hasArg(options::OPT_fptrauth_init_fini,
                          options::OPT_fno_ptrauth_init_fini))
     CC1Args.push_back("-fptrauth-init-fini");
+
+  if (!DriverArgs.hasArg(
+          options::OPT_fptrauth_init_fini_address_discrimination,
+          options::OPT_fno_ptrauth_init_fini_address_discrimination))
+    CC1Args.push_back("-fptrauth-init-fini-address-discrimination");
+
+  if (!DriverArgs.hasArg(options::OPT_faarch64_jump_table_hardening,
+                         options::OPT_fno_aarch64_jump_table_hardening))
+    CC1Args.push_back("-faarch64-jump-table-hardening");
 }
 
 static void CollectARMPACBTIOptions(const ToolChain &TC, const ArgList &Args,

diff  --git a/clang/test/Driver/aarch64-ptrauth.c b/clang/test/Driver/aarch64-ptrauth.c
index 1d2993f4c60c4..5bb963a90fcbd 100644
--- a/clang/test/Driver/aarch64-ptrauth.c
+++ b/clang/test/Driver/aarch64-ptrauth.c
@@ -23,18 +23,23 @@
 // RUN: %clang -### -c --target=aarch64-linux-pauthtest %s 2>&1 | FileCheck %s --check-prefix=PAUTHABI1
 // PAUTHABI1:      "-cc1"{{.*}} "-triple" "aarch64-unknown-linux-pauthtest"
 // PAUTHABI1-SAME: "-target-abi" "pauthtest"
-// PAUTHABI1-SAME: "-fptrauth-intrinsics" "-fptrauth-calls" "-fptrauth-returns" "-fptrauth-auth-traps" "-fptrauth-vtable-pointer-address-discrimination" "-fptrauth-vtable-pointer-type-discrimination" "-fptrauth-indirect-gotos" "-fptrauth-init-fini"
+// PAUTHABI1-SAME: "-fptrauth-intrinsics" "-fptrauth-calls" "-fptrauth-returns" "-fptrauth-auth-traps" "-fptrauth-vtable-pointer-address-discrimination" "-fptrauth-vtable-pointer-type-discrimination" "-fptrauth-type-info-vtable-pointer-discrimination" "-fptrauth-indirect-gotos" "-fptrauth-init-fini" "-fptrauth-init-fini-address-discrimination" "-faarch64-jump-table-hardening"
 
 // RUN: %clang -### -c --target=aarch64 -mabi=pauthtest -fno-ptrauth-intrinsics \
 // RUN:   -fno-ptrauth-calls -fno-ptrauth-returns -fno-ptrauth-auth-traps \
 // RUN:   -fno-ptrauth-vtable-pointer-address-discrimination -fno-ptrauth-vtable-pointer-type-discrimination \
-// RUN:   -fno-ptrauth-indirect-gotos -fno-ptrauth-init-fini %s 2>&1 | FileCheck %s --check-prefix=PAUTHABI2
+// RUN:   -fno-ptrauth-type-info-vtable-pointer-discrimination -fno-ptrauth-indirect-gotos \
+// RUN:   -fno-ptrauth-init-fini -fno-ptrauth-init-fini-address-discrimination \
+// RUN:   -fno-aarch64-jump-table-hardening %s 2>&1 | FileCheck %s --check-prefix=PAUTHABI2
 // RUN: %clang -### -c --target=aarch64-pauthtest -fno-ptrauth-intrinsics \
 // RUN:   -fno-ptrauth-calls -fno-ptrauth-returns -fno-ptrauth-auth-traps \
 // RUN:   -fno-ptrauth-vtable-pointer-address-discrimination -fno-ptrauth-vtable-pointer-type-discrimination \
-// RUN:   -fno-ptrauth-indirect-gotos -fno-ptrauth-init-fini %s 2>&1 | FileCheck %s --check-prefix=PAUTHABI2
+// RUN:   -fno-ptrauth-type-info-vtable-pointer-discrimination -fno-ptrauth-indirect-gotos \
+// RUN:   -fno-ptrauth-init-fini -fno-ptrauth-init-fini-address-discrimination \
+// RUN:   -fno-aarch64-jump-table-hardening %s 2>&1 | FileCheck %s --check-prefix=PAUTHABI2
 // PAUTHABI2:     "-cc1"
 // PAUTHABI2-NOT: "-fptrauth-
+// PAUTHABI2-NOT: "-faarch64-jump-table-hardening"
 
 // RUN: not %clang -### -c --target=x86_64 -fptrauth-intrinsics -fptrauth-calls -fptrauth-returns -fptrauth-auth-traps \
 // RUN:   -fptrauth-vtable-pointer-address-discrimination -fptrauth-vtable-pointer-type-discrimination \