diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2013-09-06 20:24:48 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2013-10-29 21:25:16 +0100 |
| commit | 1d7bf993e0731b4ac790667c196b2a2d787f95c3 (patch) | |
| tree | 235093a4593d6c68b87b5d602a2f1d0dde3ad085 /arch/mips/include/asm/syscall.h | |
| parent | 0dfa95aaa817eec8473abf5465eae135b1cf1138 (diff) | |
MIPS: ftrace: Add support for syscall tracepoints.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/syscall.h')
| -rw-r--r-- | arch/mips/include/asm/syscall.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h index 087df5f26f86..81c89132c59d 100644 --- a/arch/mips/include/asm/syscall.h +++ b/arch/mips/include/asm/syscall.h @@ -59,6 +59,25 @@ static inline unsigned long mips_get_syscall_arg(unsigned long *arg, } } +static inline long syscall_get_return_value(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->regs[2]; +} + +static inline void syscall_set_return_value(struct task_struct *task, + struct pt_regs *regs, + int error, long val) +{ + if (error) { + regs->regs[2] = -error; + regs->regs[7] = -1; + } else { + regs->regs[2] = val; + regs->regs[7] = 0; + } +} + static inline void syscall_get_arguments(struct task_struct *task, struct pt_regs *regs, unsigned int i, unsigned int n, |