ilogbl.S 5.1 KB

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  1. /*
  2. * Math library
  3. *
  4. * Copyright (C) 2016 Intel Corporation. All rights reserved.
  5. *
  6. * Redistribution and use in source and binary forms, with or without
  7. * modification, are permitted provided that the following conditions
  8. * are met:
  9. *
  10. * * Redistributions of source code must retain the above copyright
  11. * notice, this list of conditions and the following disclaimer.
  12. * * Redistributions in binary form must reproduce the above copyright
  13. * notice, this list of conditions and the following disclaimer in
  14. * the documentation and/or other materials provided with the
  15. * distribution.
  16. * * Neither the name of Intel Corporation nor the names of its
  17. * contributors may be used to endorse or promote products derived
  18. * from this software without specific prior written permission.
  19. *
  20. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24. * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31. *
  32. *
  33. * Author Name <jingwei.zhang@intel.com>
  34. * History:
  35. * 03-14-2016 Initial version. numerics svn rev. 12864
  36. */
  37. .file "ilogbl.c"
  38. .text
  39. ..TXTST0:
  40. # -- Begin ilogbl
  41. .text
  42. .align 16,0x90
  43. .globl ilogbl
  44. ilogbl:
  45. # parameter 1: 32 + %rsp
  46. ..B1.1:
  47. .cfi_startproc
  48. ..___tag_value_ilogbl.1:
  49. ..L2:
  50. subq $24, %rsp
  51. .cfi_def_cfa_offset 32
  52. ..B1.2:
  53. fnstcw 10(%rsp)
  54. ..B1.3:
  55. movzwl 40(%rsp), %eax
  56. andl $32767, %eax
  57. cmpl $32767, %eax
  58. je ..B1.19
  59. ..B1.4:
  60. testl %eax, %eax
  61. jne ..B1.12
  62. ..B1.5:
  63. movzwl 10(%rsp), %edx
  64. cmpq $0, 32(%rsp)
  65. je ..B1.14
  66. ..B1.6:
  67. movl %edx, %eax
  68. andl $768, %eax
  69. cmpl $768, %eax
  70. je ..B1.13
  71. ..B1.7:
  72. orl $-64768, %edx
  73. movw %dx, 8(%rsp)
  74. ..B1.8:
  75. fldcw 8(%rsp)
  76. ..B1.9:
  77. fldt 32(%rsp)
  78. lea _TWO_75(%rip), %rax
  79. fmull (%rax)
  80. fstpt 32(%rsp)
  81. ..B1.10:
  82. fldcw 10(%rsp)
  83. ..B1.11:
  84. movzwl 40(%rsp), %eax
  85. andl $32767, %eax
  86. addl $-16458, %eax
  87. addq $24, %rsp
  88. .cfi_def_cfa_offset 8
  89. ret
  90. .cfi_def_cfa_offset 32
  91. ..B1.12:
  92. addl $-16383, %eax
  93. addq $24, %rsp
  94. .cfi_def_cfa_offset 8
  95. ret
  96. .cfi_def_cfa_offset 32
  97. ..B1.13:
  98. fldt 32(%rsp)
  99. lea _TWO_75(%rip), %rax
  100. fmull (%rax)
  101. fstpt 32(%rsp)
  102. jmp ..B1.11
  103. ..B1.14:
  104. movl %edx, %eax
  105. andl $768, %eax
  106. cmpl $768, %eax
  107. je ..B1.18
  108. ..B1.15:
  109. orl $-64768, %edx
  110. movw %dx, 8(%rsp)
  111. ..B1.16:
  112. fldcw 8(%rsp)
  113. ..B1.17:
  114. fldcw 10(%rsp)
  115. ..B1.18:
  116. lea _infs(%rip), %rax
  117. lea _zeros(%rip), %rdx
  118. movsd (%rax), %xmm0
  119. movl $-2147483648, %eax
  120. mulsd (%rdx), %xmm0
  121. movsd %xmm0, (%rsp)
  122. addq $24, %rsp
  123. .cfi_def_cfa_offset 8
  124. ret
  125. .cfi_def_cfa_offset 32
  126. ..B1.19:
  127. lea _infs(%rip), %rax
  128. lea _zeros(%rip), %rdx
  129. cmpl $-2147483648, 36(%rsp)
  130. movsd (%rax), %xmm0
  131. mulsd (%rdx), %xmm0
  132. movsd %xmm0, (%rsp)
  133. jne ..B1.22
  134. ..B1.20:
  135. cmpl $0, 32(%rsp)
  136. jne ..B1.22
  137. ..B1.21:
  138. movl $2147483647, %eax
  139. addq $24, %rsp
  140. .cfi_def_cfa_offset 8
  141. ret
  142. .cfi_def_cfa_offset 32
  143. ..B1.22:
  144. movzwl 10(%rsp), %edx
  145. movl %edx, %eax
  146. andl $768, %eax
  147. cmpl $768, %eax
  148. je ..B1.26
  149. ..B1.23:
  150. orl $-64768, %edx
  151. movw %dx, 8(%rsp)
  152. ..B1.24:
  153. fldcw 8(%rsp)
  154. ..B1.25:
  155. fldcw 10(%rsp)
  156. ..B1.26:
  157. movl $-2147483648, %eax
  158. addq $24, %rsp
  159. .cfi_def_cfa_offset 8
  160. ret
  161. .align 16,0x90
  162. .cfi_endproc
  163. .type ilogbl,@function
  164. .size ilogbl,.-ilogbl
  165. .data
  166. # -- End ilogbl
  167. .section .rodata, "a"
  168. .align 4
  169. .align 4
  170. _TWO_75:
  171. .long 0
  172. .long 1151336448
  173. .long 0
  174. .long 994050048
  175. .type _TWO_75,@object
  176. .size _TWO_75,16
  177. .align 4
  178. _infs:
  179. .long 0
  180. .long 2146435072
  181. .long 0
  182. .long 4293918720
  183. .type _infs,@object
  184. .size _infs,16
  185. .align 4
  186. _zeros:
  187. .long 0
  188. .long 0
  189. .long 0
  190. .long 2147483648
  191. .type _zeros,@object
  192. .size _zeros,16
  193. .data
  194. .section .note.GNU-stack, ""
  195. // -- Begin DWARF2 SEGMENT .eh_frame
  196. .section .eh_frame,"a",@progbits
  197. .eh_frame_seg:
  198. .align 1
  199. # End