[v7] target/arm: Implement FEAT_GCS

[PATCH v7 68/73] linux-user/aarch64: Inject SIGSEGV for GCS faults

Richard Henderson posted 73 patches 1 month, 1 week ago

Diff against v1 v2 v3 v4 v5 v6
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Maintainers: Richard Henderson <richard.henderson@linaro.org>, Paolo Bonzini <pbonzini@redhat.com>, Eduardo Habkost <eduardo@habkost.net>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Yanan Wang <wangyanan55@huawei.com>, Zhao Liu <zhao1.liu@intel.com>, Laurent Vivier <laurent@vivier.eu>, Peter Maydell <peter.maydell@linaro.org>, Alex Williamson <alex.williamson@redhat.com>, "Cédric Le Goater" <clg@redhat.com>, Radoslaw Biernacki <rad@semihalf.com>, Leif Lindholm <leif.lindholm@oss.qualcomm.com>

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[PATCH v7 68/73] linux-user/aarch64: Inject SIGSEGV for GCS faults

Posted by Richard Henderson 1 month, 1 week ago

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/aarch64/target_signal.h | 1 +
 linux-user/aarch64/cpu_loop.c      | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/linux-user/aarch64/target_signal.h b/linux-user/aarch64/target_signal.h
index 6f66a50bfd..e509ac1032 100644
--- a/linux-user/aarch64/target_signal.h
+++ b/linux-user/aarch64/target_signal.h
@@ -7,6 +7,7 @@
 
 #define TARGET_SEGV_MTEAERR  8  /* Asynchronous ARM MTE error */
 #define TARGET_SEGV_MTESERR  9  /* Synchronous ARM MTE exception */
+#define TARGET_SEGV_CPERR   10  /* Control protection fault */
 
 #define TARGET_ARCH_HAS_SETUP_FRAME
 #define TARGET_ARCH_HAS_SIGTRAMP_PAGE 1
diff --git a/linux-user/aarch64/cpu_loop.c b/linux-user/aarch64/cpu_loop.c
index 50a4c99535..7f66a879ea 100644
--- a/linux-user/aarch64/cpu_loop.c
+++ b/linux-user/aarch64/cpu_loop.c
@@ -89,6 +89,11 @@ static void signal_for_exception(CPUARMState *env, vaddr addr)
         si_code = TARGET_ILL_ILLOPN;
         break;
 
+    case EC_GCS:
+        si_signo = TARGET_SIGSEGV;
+        si_code = TARGET_SEGV_CPERR;
+        break;
+
     case EC_MOP:
         /*
          * FIXME: The kernel fixes up wrong-option exceptions.
-- 
2.43.0