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authorRichard Henderson <rth@twiddle.net>2014-02-12 06:54:57 -0800
committerRichard Henderson <rth@twiddle.net>2014-02-12 07:00:06 -0800
commit68b7efaadb1b6045a56277ea62d324c20ac0b633 (patch)
tree07b51c9866373430373fb90b252d46c23cc1707e /sysdeps/alpha/div.S
parent8fd7b0d5591e59ed5cb3078b351bd49314a66cef (diff)
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Relocate alpha from ports to libc
Also fixed the following whitespace nits to satisfy the push: sysdeps/alpha/alphaev6/memset.S:142: space before tab in indent. sysdeps/alpha/configure:1: new blank line at EOF. sysdeps/alpha/fpu/e_sqrt.c:126: space before tab in indent. sysdeps/alpha/preconfigure:1: new blank line at EOF. sysdeps/unix/sysv/linux/alpha/syscalls.list:1: new blank line at EOF.
Diffstat (limited to 'sysdeps/alpha/div.S')
-rw-r--r--sysdeps/alpha/div.S87
1 files changed, 87 insertions, 0 deletions
diff --git a/sysdeps/alpha/div.S b/sysdeps/alpha/div.S
new file mode 100644
index 0000000000..65573e6676
--- /dev/null
+++ b/sysdeps/alpha/div.S
@@ -0,0 +1,87 @@
+/* Copyright (C) 1996-2014 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson <rth@tamu.edu>.
+
+ 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 "div_libc.h"
+
+#undef FRAME
+#ifdef __alpha_fix__
+#define FRAME 0
+#else
+#define FRAME 16
+#endif
+
+ .set noat
+
+ .align 4
+ .globl div
+ .ent div
+div:
+ .frame sp, FRAME, ra
+#if FRAME > 0
+ lda sp, -FRAME(sp)
+#endif
+#ifdef PROF
+ .set macro
+ ldgp gp, 0(pv)
+ lda AT, _mcount
+ jsr AT, (AT), _mcount
+ .set nomacro
+ .prologue 1
+#else
+ .prologue 0
+#endif
+
+ beq $18, $divbyzero
+ excb
+ mf_fpcr $f10
+
+ _ITOFT2 $17, $f0, 0, $18, $f1, 8
+
+ cvtqt $f0, $f0
+ cvtqt $f1, $f1
+ divt/c $f0, $f1, $f0
+ cvttq/c $f0, $f0
+ excb
+ mt_fpcr $f10
+ _FTOIT $f0, $0, 0
+
+ mull $0, $18, $1
+ subl $17, $1, $1
+
+ stl $0, 0(a0)
+ stl $1, 4(a0)
+ mov a0, v0
+
+#if FRAME > 0
+ lda sp, FRAME(sp)
+#endif
+ ret
+
+$divbyzero:
+ mov a0, v0
+ lda a0, GEN_INTDIV
+ call_pal PAL_gentrap
+ stl zero, 0(v0)
+ stl zero, 4(v0)
+
+#if FRAME > 0
+ lda sp, FRAME(sp)
+#endif
+ ret
+
+ .end div