diff options
Diffstat (limited to 'lib/libc/ia64/gen/__divdf3.S')
-rw-r--r-- | lib/libc/ia64/gen/__divdf3.S | 142 |
1 files changed, 0 insertions, 142 deletions
diff --git a/lib/libc/ia64/gen/__divdf3.S b/lib/libc/ia64/gen/__divdf3.S deleted file mode 100644 index 58425d9..0000000 --- a/lib/libc/ia64/gen/__divdf3.S +++ /dev/null @@ -1,142 +0,0 @@ -// -// Copyright (c) 2000, Intel Corporation -// All rights reserved. -// -// Contributed 2/15/2000 by Marius Cornea, John Harrison, Cristina Iordache, -// Ted Kubaska, Bob Norin, and Shane Story of the Computational Software Lab, -// Intel Corporation. -// -// WARRANTY DISCLAIMER -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS -// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, -// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, -// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR -// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY -// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING -// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -// -// Intel Corporation is the author of this code, and requests that all -// problem reports or change requests be submitted to it directly at -// http://developer.intel.com/opensource. -// - -#include <machine/asm.h> -__FBSDID("$FreeBSD$"); - - .section .text - -ENTRY(__divdf3, 0) -{ .mfi - // a is in f8 - // b is in f9 - - // predicate registers used: p6 - // floating-point registers used: f6, f7, f8, f9, f10, f11 - - // load a, the first argument, in f6 - nop.m 0 - mov f6=f8 - nop.i 0 -} { .mfi - // load b, the second argument, in f7 - nop.m 0 - mov f7=f9 - nop.i 0;; -} { .mfi - - // BEGIN DOUBLE PRECISION LATENCY-OPTIMIZED DIVIDE ALGORITHM - - nop.m 0 - // Step (1) - // y0 = 1 / b in f8 - frcpa.s0 f8,p6=f6,f7 - nop.i 0;; -} { .mfi - nop.m 0 - // Step (2) - // q0 = a * y0 in f9 - (p6) fma.s1 f9=f6,f8,f0 - nop.i 0 -} { .mfi - nop.m 0 - // Step (3) - // e0 = 1 - b * y0 in f10 - (p6) fnma.s1 f10=f7,f8,f1 - nop.i 0;; -} { .mfi - nop.m 0 - // Step (4) - // q1 = q0 + e0 * q0 in f9 - (p6) fma.s1 f9=f10,f9,f9 - nop.i 0 -} { .mfi - nop.m 0 - // Step (5) - // e1 = e0 * e0 in f11 - (p6) fma.s1 f11=f10,f10,f0 - nop.i 0 -} { .mfi - nop.m 0 - // Step (6) - // y1 = y0 + e0 * y0 in f8 - (p6) fma.s1 f8=f10,f8,f8 - nop.i 0;; -} { .mfi - nop.m 0 - // Step (7) - // q2 = q1 + e1 * q1 in f9 - (p6) fma.s1 f9=f11,f9,f9 - nop.i 0 -} { .mfi - nop.m 0 - // Step (8) - // e2 = e1 * e1 in f10 - (p6) fma.s1 f10=f11,f11,f0 - nop.i 0 -} { .mfi - nop.m 0 - // Step (9) - // y2 = y1 + e1 * y1 in f8 - (p6) fma.s1 f8=f11,f8,f8 - nop.i 0;; -} { .mfi - nop.m 0 - // Step (10) - // q3 = q2 + e2 * q2 in f9 - (p6) fma.d.s1 f9=f10,f9,f9 - nop.i 0;; -} { .mfi - nop.m 0 - // Step (11) - // y3 = y2 + e2 * y2 in f8 - (p6) fma.s1 f8=f10,f8,f8 - nop.i 0;; -} { .mfi - nop.m 0 - // Step (12) - // r0 = a - b * q3 in f6 - (p6) fnma.d.s1 f6=f7,f9,f6 - nop.i 0;; -} { .mfi - nop.m 0 - // Step (13) - // q4 = q3 + r0 * y3 in f8 - (p6) fma.d.s0 f8=f6,f8,f9 - nop.i 0;; - - // END DOUBLE PRECISION LATENCY-OPTIMIZED DIVIDE ALGORITHM - -} { .mib - nop.m 0 - nop.i 0 - // return - br.ret.sptk b0;; -} - -END(__divdf3) - |