summaryrefslogtreecommitdiffstats
path: root/grub-core/lib/libgcrypt/mpi/supersparc/udiv.S
diff options
context:
space:
mode:
Diffstat (limited to 'grub-core/lib/libgcrypt/mpi/supersparc/udiv.S')
-rw-r--r--grub-core/lib/libgcrypt/mpi/supersparc/udiv.S118
1 files changed, 118 insertions, 0 deletions
diff --git a/grub-core/lib/libgcrypt/mpi/supersparc/udiv.S b/grub-core/lib/libgcrypt/mpi/supersparc/udiv.S
new file mode 100644
index 0000000..79e506a
--- /dev/null
+++ b/grub-core/lib/libgcrypt/mpi/supersparc/udiv.S
@@ -0,0 +1,118 @@
+/* SuperSPARC __udiv_qrnnd division support, used from longlong.h.
+ * This is for SuperSPARC only, to compensate for its
+ * semi-functional udiv instruction.
+ *
+ * Copyright (C) 1993, 1994, 1996, 1998,
+ * 2001, 2002 Free Software Foundation, Inc.
+ *
+ * This file is part of Libgcrypt.
+ *
+ * Libgcrypt 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.
+ *
+ * Libgcrypt 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *
+ * Note: This code is heavily based on the GNU MP Library.
+ * Actually it's the same code with only minor changes in the
+ * way the data is stored; this is to support the abstraction
+ * of an optional secure memory allocation which may be used
+ * to avoid revealing of sensitive data due to paging etc.
+ */
+
+
+
+! INPUT PARAMETERS
+! rem_ptr i0
+! n1 i1
+! n0 i2
+! d i3
+
+#include "sysdep.h"
+#undef ret /* Kludge for glibc */
+
+ .text
+ .align 8
+LC0: .double 0r4294967296
+LC1: .double 0r2147483648
+
+ .align 4
+ .global C_SYMBOL_NAME(__udiv_qrnnd)
+C_SYMBOL_NAME(__udiv_qrnnd):
+ !#PROLOGUE# 0
+ save %sp,-104,%sp
+ !#PROLOGUE# 1
+ st %i1,[%fp-8]
+ ld [%fp-8],%f10
+ sethi %hi(LC0),%o7
+ fitod %f10,%f4
+ ldd [%o7+%lo(LC0)],%f8
+ cmp %i1,0
+ bge L248
+ mov %i0,%i5
+ faddd %f4,%f8,%f4
+L248:
+ st %i2,[%fp-8]
+ ld [%fp-8],%f10
+ fmuld %f4,%f8,%f6
+ cmp %i2,0
+ bge L249
+ fitod %f10,%f2
+ faddd %f2,%f8,%f2
+L249:
+ st %i3,[%fp-8]
+ faddd %f6,%f2,%f2
+ ld [%fp-8],%f10
+ cmp %i3,0
+ bge L250
+ fitod %f10,%f4
+ faddd %f4,%f8,%f4
+L250:
+ fdivd %f2,%f4,%f2
+ sethi %hi(LC1),%o7
+ ldd [%o7+%lo(LC1)],%f4
+ fcmped %f2,%f4
+ nop
+ fbge,a L251
+ fsubd %f2,%f4,%f2
+ fdtoi %f2,%f2
+ st %f2,[%fp-8]
+ b L252
+ ld [%fp-8],%i4
+L251:
+ fdtoi %f2,%f2
+ st %f2,[%fp-8]
+ ld [%fp-8],%i4
+ sethi %hi(-2147483648),%g2
+ xor %i4,%g2,%i4
+L252:
+ umul %i3,%i4,%g3
+ rd %y,%i0
+ subcc %i2,%g3,%o7
+ subxcc %i1,%i0,%g0
+ be L253
+ cmp %o7,%i3
+
+ add %i4,-1,%i0
+ add %o7,%i3,%o7
+ st %o7,[%i5]
+ ret
+ restore
+L253:
+ blu L246
+ mov %i4,%i0
+ add %i4,1,%i0
+ sub %o7,%i3,%o7
+L246:
+ st %o7,[%i5]
+ ret
+ restore
+