Update.

2000-07-31  Jes Sorensen  <jes@linuxcare.com>

	* sysdeps/ia64/elf/initfini.c: Kill dummy section since align and
	endp statements have already been added.

2000-04-18  David Mosberger  <davidm@hpl.hp.com>

	* sysdeps/unix/sysv/linux/ia64/sysdep.h: Include
	<sysdeps/ia64/sysdep.h>.

	* sysdeps/ia64/_mcount.S: New file.

	* sysdeps/ia64/elf/initfini.c (_init): Preserve gp around call to
	__gmon_start__.  Fix up extraneous whitespace.

2000-01-12  H.J. Lu  <hjl@gnu.org>

	* sysdeps/ia64/elf/initfini.c: New file.

2000-07-31  Jes Sorensen  <jes@linuxcare.com>

	* sysdeps/unix/sysv/linux/ia64/clone.S: Add stop bit to avoid WAW
	dependency between branch and ar.pfs write.

1 files changed, 87 insertions, 0 deletions

diff --git a/sysdeps/ia64/_mcount.S b/sysdeps/ia64/_mcount.S
new file mode 100644
index 0000000000..5d0a26ad87
--- /dev/null
+++ b/sysdeps/ia64/_mcount.S
@@ -0,0 +1,87 @@
+/* Machine-specific calling sequence for `mcount' profiling function.  ia64
+   Copyright (C) 2000 Free Software Foundation, Inc.
+     Contributed by David Mosberger <davidm@hpl.hp.com>
+   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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* Assembly stub to invoke _mcount().  Compiler generated code calls
+   this stub before executing a function's prologue and without saving
+   any registers.  It is therefore necessary to preserve the input
+   registers as they may contain function arguments.  To work
+   correctly with frame-less functions, it is also necessary to
+   preserve the return pointer (b0 aka rp).
+
+   State upon entering _mcount:
+
+    r8  address of return value structure (used only when called
+	function returns a large structure)
+    r15 static link (used only for nested functions)
+    in0 ar.pfs to restore before returning to the function that
+	called _mcount
+    in1 gp value to restore before returning to the function that
+	called _mcount
+    in2 return address in the function that invoked the caller
+	of _mcount (frompc)
+    in3	address of the global-offset table entry that holds the
+	profile count dword allocated by the compiler; to get
+	the address of this dword, use "ld8 in2=[in2]; this
+	dword can be used in any way by _mcount (including
+	not at all, as is the case with the current implementation)
+    b0	address to return to after _mcount is done
+*/
+
+#include <sysdep.h>
+
+#undef ret
+
+	.psr	abi64
+	.psr	lsb
+	.lsb
+
+LEAF(_mcount)
+	alloc loc0 = ar.pfs, 4, 4, 3, 0
+	mov loc1 = rp
+	mov loc2 = r8	// gcc uses r8 to pass pointer to return structure
+	;;
+	mov loc3 = r15	// gcc uses r15 to pass the static link to nested functions
+	mov out0 = in2
+	mov out1 = rp
+	br.call.sptk.few rp = __mcount_internal
+	;;
+.here:
+{
+	.mii
+	mov gp = in1
+	mov r2 = ip
+	mov ar.pfs = loc0
+}
+	;;
+	adds r2 = 1f - .here, r2
+	mov b7 = loc1
+	mov rp = in2
+	;;
+	mov r8 = loc2
+	mov r15 = loc3
+	mov b6 = r2
+	br.ret.sptk.few b6
+
+1:	alloc r2 = ar.pfs, 0, 0, 9, 0
+	mov ar.pfs = r40
+	br b7
+END(_mcount)
+
+weak_alias (_mcount, mcount)