-#ifndef _LTT_WRAPPER_KALLSYMS_H
-#define _LTT_WRAPPER_KALLSYMS_H
-
-/*
- * Copyright (C) 2011 Avik Sil (avik.sil@linaro.org)
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
+ * wrapper/kallsyms.h
*
* wrapper around kallsyms_lookup_name. Implements arch-dependent code for
* arches where the address of the start of the function body is different
* from the pointer which can be used to call the function, e.g. ARM THUMB2.
*
- * Dual LGPL v2.1/GPL v2 license.
+ * Copyright (C) 2011 Avik Sil (avik.sil@linaro.org)
+ * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
+#ifndef _LTTNG_WRAPPER_KALLSYMS_H
+#define _LTTNG_WRAPPER_KALLSYMS_H
+
#include <linux/kallsyms.h>
+#include <lttng-kernel-version.h>
+
+/* CONFIG_PPC64_ELF_ABI_V1/V2 were introduced in v5.19 */
+#if defined(CONFIG_PPC64_ELF_ABI_V2) || (defined(CONFIG_PPC64) && defined(CONFIG_CPU_LITTLE_ENDIAN))
+#define LTTNG_CONFIG_PPC64_ELF_ABI_V2
+#endif
+#if defined(CONFIG_PPC64_ELF_ABI_V1) || (defined(CONFIG_PPC64) && defined(CONFIG_CPU_BIG_ENDIAN))
+#define LTTNG_CONFIG_PPC64_ELF_ABI_V1
+#endif
+
+/*
+ * PowerPC ABIv1 needs KALLSYMS_ALL to get the function descriptor,
+ * which is needed to perform the function call.
+ */
+#ifdef LTTNG_CONFIG_PPC64_ELF_ABI_V1
+# ifndef CONFIG_KALLSYMS_ALL
+# error "LTTng-modules requires CONFIG_KALLSYMS_ALL on PowerPC ABIv1"
+# endif
+#endif
+
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,7,0))
+
+unsigned long wrapper_kallsyms_lookup_name(const char *name);
+
+#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,7,0)) */
+
+static inline
+unsigned long wrapper_kallsyms_lookup_name(const char *name)
+{
+ return kallsyms_lookup_name(name);
+}
+
+#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,7,0)) */
static inline
unsigned long kallsyms_lookup_funcptr(const char *name)
{
unsigned long addr;
- addr = kallsyms_lookup_name(name);
+ addr = wrapper_kallsyms_lookup_name(name);
#ifdef CONFIG_ARM
#ifdef CONFIG_THUMB2_KERNEL
if (addr)
#endif
return addr;
}
-#endif /* _LTT_WRAPPER_KALLSYMS_H */
+
+static inline
+unsigned long kallsyms_lookup_dataptr(const char *name)
+{
+ return wrapper_kallsyms_lookup_name(name);
+}
+
+#endif /* _LTTNG_WRAPPER_KALLSYMS_H */