c6x: define syscall_get_arch()

syscall_get_arch() is required to be implemented on all architectures
in addition to already implemented syscall_get_nr(),
syscall_get_arguments(), syscall_get_error(), and
syscall_get_return_value() functions in order to extend the generic
ptrace API with PTRACE_GET_SYSCALL_INFO request.

Acked-by: Mark Salter <msalter@redhat.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Cc: Elvira Khabirova <lineprinter@altlinux.org>
Cc: Eugene Syromyatnikov <esyr@redhat.com>
Cc: Aurelien Jacquiot <jacquiot.aurelien@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: linux-c6x-dev@linux-c6x.org
Cc: linux-audit@redhat.com
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Paul Moore <paul@paul-moore.com>

diff --git a/arch/c6x/include/asm/syscall.h b/arch/c6x/include/asm/syscall.h
index ae2be315ee9c98d8440f4409be8b67cc261f8858..39dbd1ef994c8a6deb545ba07d410845789e20c7 100644 (file)
--- a/arch/c6x/include/asm/syscall.h
+++ b/arch/c6x/include/asm/syscall.h
@@ -11,6 +11,7 @@
 #ifndef __ASM_C6X_SYSCALL_H
 #define __ASM_C6X_SYSCALL_H
 
+#include <uapi/linux/audit.h>
 #include <linux/err.h>
 #include <linux/sched.h>
 
@@ -120,4 +121,10 @@ static inline void syscall_set_arguments(struct task_struct *task,
        }
 }
 
+static inline int syscall_get_arch(void)
+{
+       return IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)
+               ? AUDIT_ARCH_C6XBE : AUDIT_ARCH_C6X;
+}
+
 #endif /* __ASM_C6X_SYSCALLS_H */

diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
index 1626727bb921f4960cf061a6bd605274abcb42b5..35ccf269ca3ddcd7641a7b87faa4d7d405adffad 100644 (file)
--- a/include/uapi/linux/audit.h
+++ b/include/uapi/linux/audit.h
@@ -381,6 +381,8 @@ enum {
 #define AUDIT_ARCH_ARCV2BE     (EM_ARCV2)
 #define AUDIT_ARCH_ARM         (EM_ARM|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_ARMEB       (EM_ARM)
+#define AUDIT_ARCH_C6X         (EM_TI_C6000|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_C6XBE       (EM_TI_C6000)
 #define AUDIT_ARCH_CRIS                (EM_CRIS|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_CSKY                (EM_CSKY|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_FRV         (EM_FRV)