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authorWaldemar Brodkorb <wbx@openadk.org>2016-05-28 18:12:58 +0200
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2016-11-04 00:03:07 +0100
commitb8fcdddcbb192fc367ff04bbd753b9deb69b09f3 (patch)
tree8febdb9d4e3d090e9273c29df9ff06116196c8e4 /libc/sysdeps/linux/nios2/setjmp.S
parent191739597c6d380692885cfdd8dd8aa4f31f029d (diff)
nios2: sync support with glibc
Only static linking is supported for now. More debugging and analyzing for ld.so, TLS and NPTL is required. But at least you can bootup a static root fileystem in Qemu.
Diffstat (limited to 'libc/sysdeps/linux/nios2/setjmp.S')
-rw-r--r--libc/sysdeps/linux/nios2/setjmp.S101
1 files changed, 54 insertions, 47 deletions
diff --git a/libc/sysdeps/linux/nios2/setjmp.S b/libc/sysdeps/linux/nios2/setjmp.S
index 6071685b0..8050dba89 100644
--- a/libc/sysdeps/linux/nios2/setjmp.S
+++ b/libc/sysdeps/linux/nios2/setjmp.S
@@ -1,49 +1,56 @@
-/*
- * libc/sysdeps/linux/nios2/setjmp.S
- *
- * Copyright (C) 2004,05,06 Microtronix Datacom Ltd
- *
- * This file is subject to the terms and conditions of the GNU Lesser
- * General Public License. See the file COPYING.LIB in the main
- * directory of this archive for more details.
- *
- * Written by Wentao Xu <wentao@microtronix.com>
- *
- */
-
-#include <features.h>
+/* setjmp for Nios II.
+ Copyright (C) 1991-2016 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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/>. */
+
+#include <sysdep.h>
#include <jmpbuf-offsets.h>
-.globl __sigsetjmp
-.type __sigsetjmp,@function
-.balign 4
-
-__sigsetjmp:
- stw r16, (JB_REGS+ 0)(r4)
- stw r17, (JB_REGS+ 4)(r4)
- stw r18, (JB_REGS+ 8)(r4)
- stw r19, (JB_REGS+12)(r4)
- stw r20, (JB_REGS+16)(r4)
- stw r21, (JB_REGS+20)(r4)
- stw r22, (JB_REGS+24)(r4)
- stw r23, (JB_REGS+28)(r4)
-
- stw ra, JB_PC(r4)
- stw sp, JB_SP(r4)
- stw fp, JB_FP(r4)
- stw gp, JB_GP(r4)
-
-#ifdef __UCLIBC_HAS_FPU__
- SAVE_FPU r4 JB_FPREGS
-#endif
-
-#ifdef __PIC__
- /* just pray 16 bit offset is enough */
- br __sigjmp_save
-#else
- movhi r8, %hi(__sigjmp_save)
- ori r8, r8, %lo(__sigjmp_save)
- jmp r8
-#endif
-
-.size __sigsetjmp,.-__sigsetjmp
+ .text
+ENTRY(setjmp)
+ movi r5, 1
+ br __sigsetjmp
+END(setjmp)
+libc_hidden_def(setjmp)
+
+ENTRY(_setjmp)
+ mov r5, zero
+ br __sigsetjmp
+END(_setjmp)
+libc_hidden_def(_setjmp)
+
+/* Save the current program position in ENV and return 0. */
+ENTRY(__sigsetjmp)
+ stw r16, (JB_R16*4)(r4)
+ stw r17, (JB_R17*4)(r4)
+ stw r18, (JB_R18*4)(r4)
+ stw r19, (JB_R19*4)(r4)
+ stw r20, (JB_R20*4)(r4)
+ stw r21, (JB_R21*4)(r4)
+ stw r22, (JB_R22*4)(r4)
+ stw fp, (JB_FP*4)(r4)
+ stw ra, (JB_RA*4)(r4)
+ stw sp, (JB_SP*4)(r4)
+ /* Save the signal mask if requested. */
+ nextpc r2
+
+1: movhi r3, %hiadj(__sigjmp_save - 1b)
+ addi r3, r3, %lo(__sigjmp_save - 1b)
+ add r2, r2, r3
+ jmp r2
+
+END(__sigsetjmp)
+libc_hidden_def(__sigsetjmp)