1 files changed, 88 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/ia64/____longjmp_chk.S b/REORG.TODO/sysdeps/unix/sysv/linux/ia64/____longjmp_chk.S
new file mode 100644
index 0000000000..52104a92ac
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/sysv/linux/ia64/____longjmp_chk.S
@@ -0,0 +1,88 @@
+/* Copyright (C) 2009-2017 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 <sigaltstack-offsets.h>
+
+	.section .rodata.str1.8,"aMS",@progbits,1
+	.align 8
+.LC0:
+	.string "longjmp causes uninitialized stack frame"
+
+	.section .sdata,"aws",@progbits
+	.align 8
+	.type	longjmp_msg,@object
+longjmp_msg:
+	data8	.LC0
+	.size	longjmp_msg, .-longjmp_msg
+
+#define __longjmp ____longjmp_chk
+
+/* We use 32 bytes (rather than sizeof(stack_t)) so that we keep the stack
+   properly aligned.  But we still want a sanity check to make sure 32 is
+   actually enough.  */
+#define STACK_SPACE ((sizeSS + 31) & -32)
+
+/* Check the stack pointer held in the jumpbuf.  Make sure it's in either the
+   current stack (r12) or in the signal stack.  */
+#define CHECK_RSP						\
+	ld8 loc0 = [in0];					\
+	;;							\
+	/* First see if target stack is within current one.  */	\
+	cmp.ltu p0, p8 = loc0, r12;				\
+(p8)	br.cond.dptk.many .Lok;					\
+								\
+	/* Check if it's an alternative signal stack.  */	\
+	mov out0 = r0;						\
+	add out1 = -STACK_SPACE, r12;				\
+	;;							\
+	mov r12 = out1;						\
+	DO_CALL_VIA_BREAK (SYS_ify (sigaltstack));		\
+	;;							\
+	/* If the syscall failed, then assume it's OK.  */	\
+	cmp.eq p8, p0 = -1, r10;				\
+(p8)	br.cond.spnt .Lok;					\
+	/* Move stack_t into regs.  */				\
+	add r14 = oSS_FLAGS, r12;	/* ss_flags */		\
+	add r15 = oSS_SIZE, r12;	/* ss_size */		\
+	ld8 r16 = [r12];		/* ss_sp */		\
+	;;							\
+	ld4 r17 = [r14];		/* ss_flags */		\
+	ld8 r18 = [r15];		/* ss_size */		\
+	;;							\
+	sub r19 = r16, r18;		/* sp - size */		\
+	/* See if we're currently on the altstack.  */		\
+	tbit.nz p0, p8 = r17, 0;	/* SS_ONSTACK */	\
+(p8)	br.cond.spnt .Lfail;					\
+	/* Verify target is within alternative stack.  */	\
+	cmp.gtu p7, p0 = loc0, r16;				\
+(p7)	br.cond.spnt .Lfail;					\
+	;;							\
+	cmp.ltu p0, p8 = loc0, r19;				\
+(p8)	br.cond.sptk.many .Lok;					\
+	;;							\
+								\
+	/* Still here?  Abort!  */				\
+.Lfail:								\
+	add r12 = STACK_SPACE, r12;				\
+	addl loc0 = @ltoffx(longjmp_msg#), r1;;			\
+	ld8.mov loc0 = [loc0], longjmp_msg#;;			\
+	ld8 out0 = [loc0];					\
+	br.call.sptk.many b0 = HIDDEN_JUMPTARGET(__fortify_fail)#;; \
+.Lok:								\
+	add r12 = STACK_SPACE, r12;
+
+#include "__longjmp.S"