Imported gcc-4.4.3

[msp430-gcc.git] / gmp / mpn / pa32 / hppa1_1 / udiv.asm

diff --git a/gmp/mpn/pa32/hppa1_1/udiv.asm b/gmp/mpn/pa32/hppa1_1/udiv.asm
new file mode 100644 (file)
index 0000000..e6a9927
--- /dev/null
+++ b/gmp/mpn/pa32/hppa1_1/udiv.asm
@@ -0,0 +1,91 @@
+dnl  HP-PA  __udiv_qrnnd division support, used from longlong.h.
+dnl  This version runs fast on PA 7000 and later.
+
+dnl  Copyright 1993, 1994, 2000, 2001, 2003 Free Software Foundation, Inc.
+
+dnl  This file is part of the GNU MP Library.
+
+dnl  The GNU MP Library is free software; you can redistribute it and/or modify
+dnl  it under the terms of the GNU Lesser General Public License as published
+dnl  by the Free Software Foundation; either version 3 of the License, or (at
+dnl  your option) any later version.
+
+dnl  The GNU MP Library is distributed in the hope that it will be useful, but
+dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+dnl  License for more details.
+
+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 INPUT PARAMETERS
+C rem_ptr      gr26
+C n1           gr25
+C n0           gr24
+C d            gr23
+
+C This file has caused a lot of trouble, since it demands PIC reference to
+C static data, which triggers bugs in gas (at least version 2.7 through
+C 2.11.2).  When the bug is triggered, many bogus relocs are generated.  The
+C current solution is to stuff data right into the code, and refer it using
+C absolute offsets.  Fragile to be sure, but nothing else seems to work.
+
+ASM_START()
+ifdef(`PIC',`',
+`      RODATA
+       INT64(0000, 0x43f00000, 0x0)    C 2^64
+')
+
+PROLOGUE(mpn_udiv_qrnnd)
+C      .callinfo       frame=64,no_calls
+
+       ldo             64(%r30),%r30
+
+       stws            %r25,-16(0,%r30)        C n_hi
+       stws            %r24,-12(0,%r30)        C n_lo
+
+ifdef(`PIC',
+`      bl              .+20,%r31
+       dep             %r0,31,2,%r31
+       .word   0x0                             C padding for alignment
+       .word   0x43f00000, 0x0                 C 2^64
+       ldo             4(%r31),%r31',
+`      ldil            `L'%L(0000),%r31
+       ldo             R%L(0000)(%r31),%r31')
+
+       fldds           -16(0,%r30),%fr5
+       stws            %r23,-12(0,%r30)
+       comib,<=        0,%r25,L(1)
+       fcnvxf,dbl,dbl  %fr5,%fr5
+       fldds           0(0,%r31),%fr4
+       fadd,dbl        %fr4,%fr5,%fr5
+
+LDEF(1)
+       fcpy,sgl        %fr0,%fr6L
+       fldws           -12(0,%r30),%fr6R
+       fcnvxf,dbl,dbl  %fr6,%fr4
+
+       fdiv,dbl        %fr5,%fr4,%fr5
+
+       fcnvfx,dbl,dbl  %fr5,%fr4
+       fstws           %fr4R,-16(%r30)
+       xmpyu           %fr4R,%fr6R,%fr6
+       ldws            -16(%r30),%r28
+       fstds           %fr6,-16(0,%r30)
+       ldws            -12(0,%r30),%r21
+       ldws            -16(0,%r30),%r20
+       sub             %r24,%r21,%r22
+       subb            %r25,%r20,%r20
+       comib,=         0,%r20,L(2)
+       ldo             -64(%r30),%r30
+
+       add             %r22,%r23,%r22
+       ldo             -1(%r28),%r28
+
+LDEF(2)
+       bv              0(%r2)
+       stws            %r22,0(0,%r26)
+
+EPILOGUE(mpn_udiv_qrnnd)