diff options
Diffstat (limited to 'xorg-server/hw/xfree86/loader/SparcMulDiv.S')
| -rw-r--r-- | xorg-server/hw/xfree86/loader/SparcMulDiv.S | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/loader/SparcMulDiv.S b/xorg-server/hw/xfree86/loader/SparcMulDiv.S new file mode 100644 index 000000000..11139d192 --- /dev/null +++ b/xorg-server/hw/xfree86/loader/SparcMulDiv.S @@ -0,0 +1,87 @@ +/* + * Hardware integer division and multiplication routines for SPARC v8 and higher. + * + * Copyright (C) 1996 David S. Miller (davem@redhat.com) + * Copyright (C) 1999 Jakub Jelinek (jj@ultra.linux.cz) + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * JAKUB JELINEK OR DAVID MILLER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ +/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/misc/SparcMulDiv.S,v 1.1 1999/07/10 07:24:51 dawes Exp $ */ + + .globl urem_sparcv89, umul_sparcv89, udiv_sparcv89 + .globl rem_sparcv89, mul_sparcv89, div_sparcv89 + + .align 32 +urem_sparcv89: + wr %g0, 0x0, %y + nop + nop + nop + udiv %o0, %o1, %o2 + umul %o2, %o1, %o2 + retl + sub %o0, %o2, %o0 + + .align 32 +umul_sparcv89: + umul %o0, %o1, %o0 + retl + rd %y, %o1 + + .align 32 +udiv_sparcv89: + wr %g0, 0x0, %y + nop + nop + retl + udiv %o0, %o1, %o0 + + .align 32 +rem_sparcv89: + sra %o0, 0x1f, %o4 + wr %o4, 0x0, %y + nop + nop + nop + sdivcc %o0, %o1, %o2 + bvs,a 1f + xnor %o2, %g0, %o2 +1: smul %o2, %o1, %o2 + retl + sub %o0, %o2, %o0 + + .align 32 +mul_sparcv89: + smul %o0, %o1, %o0 + retl + rd %y, %o1 + nop + + .align 32 +div_sparcv89: + sra %o0, 0x1f, %o2 + wr %o2, 0x0, %y + nop + nop + nop + sdivcc %o0, %o1, %o0 + bvs,a 1f + xnor %o0, %g0, %o0 +1: retl + nop |