compiler-rt/lib/builtins/hexagon/memcpy_likely_aligned.S

   1 //===------------------------- memcopy routines ---------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9
  10         .macro FUNCTION_BEGIN name
  11         .text
  12         .p2align 5
  13         .globl \name
  14         .type  \name, @function
  15 \name:
  16         .endm
  17
  18         .macro FUNCTION_END name
  19         .size  \name, . - \name
  20         .endm
  21
  22 FUNCTION_BEGIN __hexagon_memcpy_likely_aligned_min32bytes_mult8bytes
  23         {
  24                 p0 = bitsclr(r1,#7)
  25                 p0 = bitsclr(r0,#7)
  26                 if (p0.new) r5:4 = memd(r1)
  27                 r3 = #-3
  28         }
  29         {
  30                 if (!p0) jump .Lmemcpy_call
  31                 if (p0) memd(r0++#8) = r5:4
  32                 if (p0) r5:4 = memd(r1+#8)
  33                 r3 += lsr(r2,#3)
  34         }
  35         {
  36                 memd(r0++#8) = r5:4
  37                 r5:4 = memd(r1+#16)
  38                 r1 = add(r1,#24)
  39                 loop0(1f,r3)
  40         }
  41         .falign
  42 1:
  43         {
  44                 memd(r0++#8) = r5:4
  45                 r5:4 = memd(r1++#8)
  46         }:endloop0
  47         {
  48                 memd(r0) = r5:4
  49                 r0 -= add(r2,#-8)
  50                 jumpr r31
  51         }
  52 FUNCTION_END __hexagon_memcpy_likely_aligned_min32bytes_mult8bytes
  53
  54 .Lmemcpy_call:
  55 #ifdef __PIC__
  56         jump memcpy@PLT
  57 #else
  58         jump memcpy
  59 #endif
  60
  61   .globl __qdsp_memcpy_likely_aligned_min32bytes_mult8bytes
  62   .set   __qdsp_memcpy_likely_aligned_min32bytes_mult8bytes, \
  63          __hexagon_memcpy_likely_aligned_min32bytes_mult8bytes