diff options
| author | Guo Ren <ren_guo@c-sky.com> | 2018-03-15 10:40:27 +0800 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2018-03-15 20:39:56 +0100 |
| commit | 8be3a69f1881cb87189164821c631fb398ea2b11 (patch) | |
| tree | e52473e16d406e32cd33a6702cab75963dd51fac /libc | |
| parent | bf4c2d242f587700e3eb2ffd5721ddaf3cdbc7e5 (diff) | |
csky: support bsd-setjmp and bsd-_setjmp.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/sysdeps/linux/csky/setjmp.S | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/libc/sysdeps/linux/csky/setjmp.S b/libc/sysdeps/linux/csky/setjmp.S index 03b402b2d..fb4b156c4 100644 --- a/libc/sysdeps/linux/csky/setjmp.S +++ b/libc/sysdeps/linux/csky/setjmp.S @@ -7,7 +7,7 @@ #include <sysdep.h> -ENTRY(setjmp) +ENTRY(__sigsetjmp) stw sp, (a0, 0) stw lr, (a0, 4) @@ -43,8 +43,20 @@ ENTRY(setjmp) ldw lr, (sp, 0) addi sp, 8 rts +END(__sigsetjmp) + +/* + * Support bsd-setjmp and bsd-_setjmp with tail-call method. + * Use br to keep the lr-reg, we must return to the Caller not setjmp. + * And we will rts by __sigsetjmp. + */ +ENTRY(setjmp) + movi a1, 1 + br __sigsetjmp END(setjmp) -strong_alias(setjmp, __sigsetjmp) -strong_alias(setjmp, _setjmp) +ENTRY(_setjmp) + movi a1, 0 + br __sigsetjmp +END(_setjmp) |