truncl.S 4.4 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 "truncl.c"
  38. .text
  39. ..TXTST0:
  40. # -- Begin truncl
  41. .text
  42. .align 16,0x90
  43. .globl truncl
  44. truncl:
  45. # parameter 1: 8 + %ebp
  46. ..B1.1:
  47. ..L1:
  48. pushl %ebp
  49. movl %esp, %ebp
  50. andl $-16, %esp
  51. subl $32, %esp
  52. ..B1.2:
  53. fnstcw 22(%esp)
  54. ..B1.3:
  55. movzwl 16(%ebp), %ecx
  56. andl $32767, %ecx
  57. call ..L2
  58. ..L2:
  59. popl %eax
  60. lea _GLOBAL_OFFSET_TABLE_+[. - ..L2](%eax), %eax
  61. cmpl $16446, %ecx
  62. jge ..B1.14
  63. ..B1.4:
  64. cmpl $16383, %ecx
  65. jl ..B1.9
  66. ..B1.5:
  67. cmpl $16415, %ecx
  68. jge ..B1.7
  69. ..B1.6:
  70. negl %ecx
  71. addl $30, %ecx
  72. movl 12(%ebp), %eax
  73. shrl %cl, %eax
  74. shll %cl, %eax
  75. movl %eax, 12(%ebp)
  76. xorl %eax, %eax
  77. jmp ..B1.8
  78. ..B1.7:
  79. negl %ecx
  80. addl $30, %ecx
  81. movl 8(%ebp), %eax
  82. shrl %cl, %eax
  83. shll %cl, %eax
  84. ..B1.8:
  85. movl %eax, 8(%ebp)
  86. fldt 8(%ebp)
  87. movl %ebp, %esp
  88. popl %ebp
  89. ret
  90. ..B1.9:
  91. testl %ecx, %ecx
  92. jne ..B1.13
  93. ..B1.10:
  94. cmpl $0, 12(%ebp)
  95. jne ..B1.12
  96. ..B1.11:
  97. cmpl $0, 8(%ebp)
  98. je ..B1.13
  99. ..B1.12:
  100. fldl _smallest_value_64@GOTOFF(%eax)
  101. fstpl (%esp)
  102. ..B1.13:
  103. movzbl 17(%ebp), %edx
  104. andl $128, %edx
  105. shrl $7, %edx
  106. fldl _zeros@GOTOFF(%eax,%edx,8)
  107. movl %ebp, %esp
  108. popl %ebp
  109. ret
  110. ..B1.14:
  111. movzwl 22(%esp), %ecx
  112. movl %ecx, %edx
  113. andl $768, %edx
  114. cmpl $768, %edx
  115. je ..B1.20
  116. ..B1.15:
  117. orl $-64768, %ecx
  118. movw %cx, 20(%esp)
  119. ..B1.16:
  120. fldcw 20(%esp)
  121. ..B1.17:
  122. fldt 8(%ebp)
  123. fmull _ones@GOTOFF(%eax)
  124. fstpt 8(%esp)
  125. ..B1.18:
  126. fldcw 22(%esp)
  127. ..B1.19:
  128. fldt 8(%esp)
  129. movl %ebp, %esp
  130. popl %ebp
  131. ret
  132. ..B1.20:
  133. fldt 8(%ebp)
  134. fmull _ones@GOTOFF(%eax)
  135. fstpt 8(%esp)
  136. jmp ..B1.19
  137. .align 16,0x90
  138. .type truncl,@function
  139. .size truncl,.-truncl
  140. .data
  141. # -- End truncl
  142. .section .rodata, "a"
  143. .align 4
  144. .align 4
  145. _smallest_value_64:
  146. .long 1
  147. .long 0
  148. .long 1
  149. .long 2147483648
  150. .type _smallest_value_64,@object
  151. .size _smallest_value_64,16
  152. .align 4
  153. _zeros:
  154. .long 0
  155. .long 0
  156. .long 0
  157. .long 2147483648
  158. .type _zeros,@object
  159. .size _zeros,16
  160. .align 4
  161. _ones:
  162. .long 0
  163. .long 1072693248
  164. .long 0
  165. .long 3220176896
  166. .type _ones,@object
  167. .size _ones,16
  168. .data
  169. .section .note.GNU-stack, ""
  170. # End