diff options
Diffstat (limited to 'arch/mips/include/asm/branch.h')
-rw-r--r-- | arch/mips/include/asm/branch.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/mips/include/asm/branch.h b/arch/mips/include/asm/branch.h new file mode 100644 index 000000000000..37c6857c8d4a --- /dev/null +++ b/arch/mips/include/asm/branch.h | |||
@@ -0,0 +1,38 @@ | |||
1 | /* | ||
2 | * This file is subject to the terms and conditions of the GNU General Public | ||
3 | * License. See the file "COPYING" in the main directory of this archive | ||
4 | * for more details. | ||
5 | * | ||
6 | * Copyright (C) 1996, 1997, 1998, 2001 by Ralf Baechle | ||
7 | */ | ||
8 | #ifndef _ASM_BRANCH_H | ||
9 | #define _ASM_BRANCH_H | ||
10 | |||
11 | #include <asm/ptrace.h> | ||
12 | |||
13 | static inline int delay_slot(struct pt_regs *regs) | ||
14 | { | ||
15 | return regs->cp0_cause & CAUSEF_BD; | ||
16 | } | ||
17 | |||
18 | static inline unsigned long exception_epc(struct pt_regs *regs) | ||
19 | { | ||
20 | if (!delay_slot(regs)) | ||
21 | return regs->cp0_epc; | ||
22 | |||
23 | return regs->cp0_epc + 4; | ||
24 | } | ||
25 | |||
26 | extern int __compute_return_epc(struct pt_regs *regs); | ||
27 | |||
28 | static inline int compute_return_epc(struct pt_regs *regs) | ||
29 | { | ||
30 | if (!delay_slot(regs)) { | ||
31 | regs->cp0_epc += 4; | ||
32 | return 0; | ||
33 | } | ||
34 | |||
35 | return __compute_return_epc(regs); | ||
36 | } | ||
37 | |||
38 | #endif /* _ASM_BRANCH_H */ | ||