diff options
| author | Guo Ren <ren_guo@c-sky.com> | 2019-03-30 23:44:34 +0800 |
|---|---|---|
| committer | Guo Ren <ren_guo@c-sky.com> | 2019-04-22 13:44:57 +0800 |
| commit | f4625ee0e40a5c724bb3f3eb7fd89e491bfd7646 (patch) | |
| tree | 5e94b471f288c647793f4ad38697d28f81573022 /arch/csky/abiv2 | |
| parent | f335b10f3b6ca2d11adef95092fff65152c31b48 (diff) | |
csky: Use in_syscall & forget_syscall instead of r11_sig
We could use regs->sr 16-24 bits to detect syscall: VEC_TRAP0 and
r11_sig is no necessary for current implementation.
In this patch, we implement the in_syscall and forget_syscall which are
inspired from arm & nds32, but csky pt_regs has no syscall_num element
and we just set zero to regs->sr's vector-bits-field instead.
For ret_from_fork, current task was forked from parent which is in syscall
progress and its regs->sr has been already setted with VEC_TRAP0. See:
arch/csky/kernel/process.c: copy_thread()
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Diffstat (limited to 'arch/csky/abiv2')
| -rw-r--r-- | arch/csky/abiv2/inc/abi/regdef.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/csky/abiv2/inc/abi/regdef.h b/arch/csky/abiv2/inc/abi/regdef.h index c72abb781bdc..652f5ce4c3dd 100644 --- a/arch/csky/abiv2/inc/abi/regdef.h +++ b/arch/csky/abiv2/inc/abi/regdef.h @@ -5,8 +5,6 @@ #define __ASM_CSKY_REGDEF_H #define syscallid r7 -#define r11_sig r11 - #define regs_syscallid(regs) regs->regs[3] /* |