| /* |
| * arch/xtensa/include/asm/ftrace.h |
| * |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License. See the file "COPYING" in the main directory of this archive |
| * for more details. |
| * |
| * Copyright (C) 2013 Tensilica Inc. |
| */ |
| #ifndef _XTENSA_FTRACE_H |
| #define _XTENSA_FTRACE_H |
| |
| #include <asm/processor.h> |
| |
| #define HAVE_ARCH_CALLER_ADDR |
| #define CALLER_ADDR0 ({ unsigned long a0, a1; \ |
| __asm__ __volatile__ ( \ |
| "mov %0, a0\n" \ |
| "mov %1, a1\n" \ |
| : "=r"(a0), "=r"(a1) : : ); \ |
| MAKE_PC_FROM_RA(a0, a1); }) |
| #ifdef CONFIG_FRAME_POINTER |
| extern unsigned long return_address(unsigned level); |
| #define CALLER_ADDR1 return_address(1) |
| #define CALLER_ADDR2 return_address(2) |
| #define CALLER_ADDR3 return_address(3) |
| #else |
| #define CALLER_ADDR1 (0) |
| #define CALLER_ADDR2 (0) |
| #define CALLER_ADDR3 (0) |
| #endif |
| |
| #endif /* _XTENSA_FTRACE_H */ |
