projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3ae908c9 MF |
1 | /* |
| 2 | * arch/xtensa/include/asm/ftrace.h | |
| 3 | * | |
| 4 | * This file is subject to the terms and conditions of the GNU General Public | |
| 5 | * License. See the file "COPYING" in the main directory of this archive | |
| 6 | * for more details. | |
| 7 | * | |
| 8 | * Copyright (C) 2013 Tensilica Inc. | |
| 9 | */ | |
| 10 | #ifndef _XTENSA_FTRACE_H | |
| 11 | #define _XTENSA_FTRACE_H | |
| 12 | ||
| 13 | #include <asm/processor.h> | |
| 14 | ||
| 15 | #define HAVE_ARCH_CALLER_ADDR | |
| 478ba61a | 16 | #ifndef __ASSEMBLY__ |
| 3ae908c9 MF |
17 | #define CALLER_ADDR0 ({ unsigned long a0, a1; \ |
| 18 | __asm__ __volatile__ ( \ | |
| 19 | "mov %0, a0\n" \ | |
| 20 | "mov %1, a1\n" \ | |
| ea1d3ed3 | 21 | : "=r"(a0), "=r"(a1)); \ |
| 3ae908c9 MF |
22 | MAKE_PC_FROM_RA(a0, a1); }) |
| 23 | #ifdef CONFIG_FRAME_POINTER | |
| 24 | extern unsigned long return_address(unsigned level); | |
| 25 | #define CALLER_ADDR1 return_address(1) | |
| 26 | #define CALLER_ADDR2 return_address(2) | |
| 27 | #define CALLER_ADDR3 return_address(3) | |
| 478ba61a | 28 | #else /* CONFIG_FRAME_POINTER */ |
| 3ae908c9 MF |
29 | #define CALLER_ADDR1 (0) |
| 30 | #define CALLER_ADDR2 (0) | |
| 31 | #define CALLER_ADDR3 (0) | |
| 478ba61a MF |
32 | #endif /* CONFIG_FRAME_POINTER */ |
| 33 | #endif /* __ASSEMBLY__ */ | |
| 34 | ||
| 35 | #ifdef CONFIG_FUNCTION_TRACER | |
| 36 | ||
| 37 | #define MCOUNT_ADDR ((unsigned long)(_mcount)) | |
| 38 | #define MCOUNT_INSN_SIZE 3 | |
| 39 | ||
| 40 | #ifndef __ASSEMBLY__ | |
| 41 | extern void _mcount(void); | |
| 42 | #define mcount _mcount | |
| 43 | #endif /* __ASSEMBLY__ */ | |
| 44 | #endif /* CONFIG_FUNCTION_TRACER */ | |
| 3ae908c9 MF |
45 | |
| 46 | #endif /* _XTENSA_FTRACE_H */ |