1 files changed, 140 insertions, 0 deletions
diff --git a/sysdeps/arm/__longjmp.S b/sysdeps/arm/__longjmp.S
new file mode 100644
index 0000000000..27c57a12df
--- /dev/null
+++ b/sysdeps/arm/__longjmp.S
@@ -0,0 +1,140 @@
+/* longjmp for ARM.
+   Copyright (C) 1997-2014 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 <bits/setjmp.h>
+#include <rtld-global-offsets.h>
+#include <arm-features.h>
+
+/* __longjmp(jmpbuf, val) */
+
+ENTRY (__longjmp)
+	mov	ip, r0
+	movs	r0, r1		/* get the return value in place */
+	it	eq
+	moveq	r0, #1		/* can't let setjmp() return zero! */
+
+#ifdef CHECK_SP
+	sfi_breg ip, \
+	ldr	r4, [\B, #32]	/* jmpbuf's sp */
+	cfi_undefined (r4)
+#ifdef PTR_DEMANGLE
+	PTR_DEMANGLE (r4, r4, a3, a4)
+#endif
+	CHECK_SP (r4)
+#endif
+	sfi_sp sfi_breg ip, \
+	ldmia	\B!, JMP_BUF_REGLIST
+#ifdef PTR_DEMANGLE
+	ldr	a4, [ip], #4
+	PTR_DEMANGLE (a4, a4, a3, a2)
+	mov	sp, a4
+	ldr	a4, [ip], #4
+	PTR_DEMANGLE2 (lr, a4, a3)
+#else
+	ldr	sp, [ip], #4
+	ldr	lr, [ip], #4
+#endif
+	cfi_restore (v1)
+	cfi_restore (v2)
+	cfi_restore (v3)
+	cfi_restore (v4)
+	cfi_restore (v5)
+	cfi_restore (v6)
+	cfi_restore (sl)
+	cfi_restore (fp)
+	cfi_restore (sp)
+	cfi_restore (lr)
+
+#if !defined ARM_ASSUME_NO_IWMMXT || defined __SOFTFP__
+# define NEED_HWCAP 1
+#endif
+
+#ifdef NEED_HWCAP
+# ifdef IS_IN_rtld
+	ldr	a2, 1f
+	ldr	a3, .Lrtld_local_ro
+0:	add	a2, pc, a2
+	add	a2, a2, a3
+	ldr	a2, [a2, #RTLD_GLOBAL_RO_DL_HWCAP_OFFSET]
+# else
+#  ifdef PIC
+	ldr	a2, 1f
+	ldr	a3, .Lrtld_global_ro
+0:	add	a2, pc, a2
+	ldr	a2, [a2, a3]
+	ldr	a2, [a2, #RTLD_GLOBAL_RO_DL_HWCAP_OFFSET]
+#  else
+	ldr	a2, .Lhwcap
+	ldr	a2, [a2, #0]
+#  endif
+# endif
+#endif
+
+#ifdef __SOFTFP__
+	tst	a2, #HWCAP_ARM_VFP
+	beq	.Lno_vfp
+#endif
+
+	/* Restore the VFP registers.  */
+	/* Following instruction is vldmia ip!, {d8-d15}.  */
+	sfi_breg r12, \
+	ldc	p11, cr8, [\B], #64
+.Lno_vfp:
+
+#ifndef ARM_ASSUME_NO_IWMMXT
+	tst	a2, #HWCAP_ARM_IWMMXT
+	beq	.Lno_iwmmxt
+
+	/* Restore the call-preserved iWMMXt registers.  */
+	/* Following instructions are wldrd wr10, [ip], #8 (etc.)  */
+	sfi_breg r12, \
+	ldcl	p1, cr10, [\B], #8
+	sfi_breg r12, \
+	ldcl	p1, cr11, [\B], #8
+	sfi_breg r12, \
+	ldcl	p1, cr12, [\B], #8
+	sfi_breg r12, \
+	ldcl	p1, cr13, [\B], #8
+	sfi_breg r12, \
+	ldcl	p1, cr14, [\B], #8
+	sfi_breg r12, \
+	ldcl	p1, cr15, [\B], #8
+.Lno_iwmmxt:
+#endif
+
+	DO_RET(lr)
+
+#ifdef NEED_HWCAP
+# ifdef IS_IN_rtld
+1:	.long	_GLOBAL_OFFSET_TABLE_ - 0b - PC_OFS
+.Lrtld_local_ro:
+	.long	C_SYMBOL_NAME(_rtld_local_ro)(GOTOFF)
+# else
+#  ifdef PIC
+1:	.long	_GLOBAL_OFFSET_TABLE_ - 0b - PC_OFS
+.Lrtld_global_ro:
+	.long	C_SYMBOL_NAME(_rtld_global_ro)(GOT)
+#  else
+.Lhwcap:
+	.long	C_SYMBOL_NAME(_dl_hwcap)
+#  endif
+# endif
+#endif
+
+END (__longjmp)