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| author | Chris Metcalf <cmetcalf@ezchip.com> | 2015-07-22 14:30:14 -0400 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@ezchip.com> | 2015-07-30 12:32:16 -0400 |
| commit | a0ddef81f4aeeeec3326f6b6a255d8ea13b41908 (patch) | |
| tree | 3a551abb0a57ff62fa7ad380f87e6c8bdb154d7b /arch/tile/include/asm/syscall.h | |
| parent | 38715df206d52817ac8ac032f35ee76955bdc15d (diff) | |
| download | linux-stable-a0ddef81f4aeeeec3326f6b6a255d8ea13b41908.tar.gz | |
tile: enable full SECCOMP support
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Diffstat (limited to 'arch/tile/include/asm/syscall.h')
| -rw-r--r-- | arch/tile/include/asm/syscall.h | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/arch/tile/include/asm/syscall.h b/arch/tile/include/asm/syscall.h index 9644b88f133d..373d73064ea1 100644 --- a/arch/tile/include/asm/syscall.h +++ b/arch/tile/include/asm/syscall.h @@ -20,6 +20,8 @@ #include <linux/sched.h> #include <linux/err.h> +#include <linux/audit.h> +#include <linux/compat.h> #include <arch/abi.h> /* The array of function pointers for syscalls. */ @@ -61,7 +63,15 @@ static inline void syscall_set_return_value(struct task_struct *task, struct pt_regs *regs, int error, long val) { - regs->regs[0] = (long) error ?: val; + if (error) { + /* R0 is the passed-in negative error, R1 is positive. */ + regs->regs[0] = error; + regs->regs[1] = -error; + } else { + /* R1 set to zero to indicate no error. */ + regs->regs[0] = val; + regs->regs[1] = 0; + } } static inline void syscall_get_arguments(struct task_struct *task, @@ -82,4 +92,20 @@ static inline void syscall_set_arguments(struct task_struct *task, memcpy(®s[i], args, n * sizeof(args[0])); } +/* + * We don't care about endianness (__AUDIT_ARCH_LE bit) here because + * tile has the same system calls both on little- and big- endian. + */ +static inline int syscall_get_arch(void) +{ + if (is_compat_task()) + return AUDIT_ARCH_TILEGX32; + +#ifdef CONFIG_TILEGX + return AUDIT_ARCH_TILEGX; +#else + return AUDIT_ARCH_TILEPRO; +#endif +} + #endif /* _ASM_TILE_SYSCALL_H */ |