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// string.s: function to compute length of string
// Copyright (c) 2000, Intel Corporation// All rights reserved.//// 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.//
.file "string.s" .section .text// -- Begin strlen .proc strlen#
.global strlen#
.align 32
strlen: { .mib alloc r14=ar.pfs,1,7,0,8 //8 rotating registers, 7 locals mov r11=pr //Save predicate register file brp.loop.imp .b1_4, .bw1 // Put loop backedge target in TAR } { .mib add r35=0,r0 // i = 0;
cmp.eq.unc p7,p0=r32,r0 //check if input s (r32) = 0 (p7) br.cond.dpnt .b1_1 ;; // exit if s=0
} // Setup for doing software pipelined loops { .mii add r33=0,r0 mov pr.rot=0x30000 // p16=p17=1 mov ar.ec=0 ;;
} { .mfb mov r9=r32 nop.f 0 nop.b 0;;
}.b1_4: { .mii ld1.s r37=[r9],1 // *s (r37,r38,r39) add r32=1,r33 // i++ (r32,r33,r34,r35) (p19) chk.s r39,.natfault1_0 // } .bw1: { .mfb (p19) cmp4.ne p17,p0=r39,r0 // *s==0 (p16,p17,p18) nop.f 0 (p17) br.wtop.dptk .b1_4 ;; //
}.b1_1: { .mfi nop.m 0 nop.f 0 sxt4 r8=r35 } { .mib nop.m 0 mov pr=r11,0x1003e br.ret.sptk.many b0 ;;
}.natfault1_0: add r9 = -3, r9;;
ld1 r39 = [r9],3 br.cond.sptk .bw1;;
_2_1_2auto_size == 0x0// -- End strlen .endp strlen#
// mark_proc_addr_taken strlen;
// End
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