| 1 | #ifndef _LTTNG_WRAPPER_KALLSYMS_H |
| 2 | #define _LTTNG_WRAPPER_KALLSYMS_H |
| 3 | |
| 4 | /* |
| 5 | * Copyright (C) 2011 Avik Sil (avik.sil@linaro.org) |
| 6 | * |
| 7 | * wrapper around kallsyms_lookup_name. Implements arch-dependent code for |
| 8 | * arches where the address of the start of the function body is different |
| 9 | * from the pointer which can be used to call the function, e.g. ARM THUMB2. |
| 10 | * |
| 11 | * Dual LGPL v2.1/GPL v2 license. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/kallsyms.h> |
| 15 | |
| 16 | static inline |
| 17 | unsigned long kallsyms_lookup_funcptr(const char *name) |
| 18 | { |
| 19 | unsigned long addr; |
| 20 | |
| 21 | addr = kallsyms_lookup_name(name); |
| 22 | #ifdef CONFIG_ARM |
| 23 | #ifdef CONFIG_THUMB2_KERNEL |
| 24 | if (addr) |
| 25 | addr |= 1; /* set bit 0 in address for thumb mode */ |
| 26 | #endif |
| 27 | #endif |
| 28 | return addr; |
| 29 | } |
| 30 | #endif /* _LTTNG_WRAPPER_KALLSYMS_H */ |