Imported gcc-4.4.3

[msp430-gcc.git] / gmp / tune / powerpc.asm

diff --git a/gmp/tune/powerpc.asm b/gmp/tune/powerpc.asm
new file mode 100644 (file)
index 0000000..19ab901
--- /dev/null
+++ b/gmp/tune/powerpc.asm
@@ -0,0 +1,42 @@
+dnl  PowerPC mftb_function -- read time base registers.
+
+dnl  Copyright 2002 Free Software Foundation, Inc.
+dnl
+dnl  This file is part of the GNU MP Library.
+dnl
+dnl  The GNU MP Library is free software; you can redistribute it and/or
+dnl  modify it under the terms of the GNU Lesser General Public License as
+dnl  published by the Free Software Foundationn; either version 3 of the
+dnl  License, or (at your option) any later version.
+dnl
+dnl  The GNU MP Library is distributed in the hope that it will be useful,
+dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+dnl  Lesser General Public License for more details.
+dnl
+dnl  You should have received a copy of the GNU Lesser General Public License
+dnl  along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.
+
+include(`../config.m4')
+
+
+C void mftb_function (unsigned a[2]);
+C
+
+ASM_START()
+PROLOGUE(mftb_function)
+
+       C r3    a
+
+L(again):
+       mftbu   r4
+       mftb    r5
+       mftbu   r6
+       cmp     cr0, r4, r6
+       bne     L(again)
+
+       stw     r5, 0(r3)
+       stw     r4, 4(r3)
+       blr
+
+EPILOGUE()