diff options
| author | Waldemar Brodkorb <wbx@openadk.org> | 2017-05-24 20:49:02 +0200 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2017-06-23 23:46:04 +0200 |
| commit | 041cdc2769407c4d3869b218ad7ee7638e1c306e (patch) | |
| tree | 1ea25250d74dcb230cf5feee99226fc080dbd678 /libc/sysdeps/linux/sparc64/setjmp.S | |
| parent | 58a5ba12bffad5916d9897c2870fc483f1db8282 (diff) | |
sparc64: add basic support
No NPTL, no LDSO support.
Bootup with Busybox Ash in Qemu working.
Testuite shows only two failures, but mksh continue/break
support doesn't work.
Diffstat (limited to 'libc/sysdeps/linux/sparc64/setjmp.S')
| -rw-r--r-- | libc/sysdeps/linux/sparc64/setjmp.S | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/sparc64/setjmp.S b/libc/sysdeps/linux/sparc64/setjmp.S new file mode 100644 index 000000000..b30c7d744 --- /dev/null +++ b/libc/sysdeps/linux/sparc64/setjmp.S @@ -0,0 +1,63 @@ +/* Copyright (C) 1997-2017 Free Software Foundation, Inc. + Contributed by Richard Henderson (rth@tamu.edu). + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +/* __sigsetjmp is implemented in terms of the getcontext trap on + Linux/Sparc64. */ + +#include <sysdep.h> + +/* Offsets into the jmp_buf structure. */ + +#define O_mask_was_saved 512 +#define O_gregs 32 +#define O_g1 (O_gregs + 4*8) + +/* int _setjmp(jmp_buf) */ + +ENTRY(_setjmp) + ba __sigsetjmp_local + set 0, %o1 +END(_setjmp) +libc_hidden_def(_setjmp) + +/* int setjmp(jmp_buf) */ + +ENTRY(setjmp) + ba,pt %xcc, __sigsetjmp_local + set 1, %o1 +END(setjmp) + +/* int __sigsetjmp(jmp_buf, savemask) */ + +ENTRY(__sigsetjmp) +__sigsetjmp_local: + + /* Record whether the user is intending to save the sigmask. */ + st %o1, [%o0 + O_mask_was_saved] + + /* Load up our return value, as longjmp is going to override + the jmp_buf on its way back. */ + mov %g0, %g1 + + /* And call getcontext! */ + ta 0x6e + + retl + mov %g1, %o0 + +END(__sigsetjmp) +libc_hidden_def(__sigsetjmp) |