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qemu / qemu / f539fbe33753fb1549e28c56225d0ab7a8cb0669
commitf539fbe33753fb1549e28c56225d0ab7a8cb0669[log] [tgz]
authorJose Ricardo Ziviani <joserz@linux.vnet.ibm.com>Tue Jan 10 00:10:09 2017 -0200
committerDavid Gibson <david@gibson.dropbear.id.au>Tue Jan 31 10:10:14 2017 +1100
tree2944e5725ea7a9f77c4c5811961ecb1d2f610a4c
parent6758c192b063515b5c7bd2b0086217825c5b6d00 [diff]
host-utils: Implement unsigned quadword left/right shift and unit tests

Implements 128-bit left shift and right shift as well as their
testcases. By design, shift silently mods by 128, so the caller is
responsible to assert the shift range if necessary.

Left shift sets the overflow flag if any non-zero digit is shifted out.

Examples:
 ulshift(&low, &high, 250, &overflow);
 equivalent: n << 122

 urshift(&low, &high, -2);
 equivalent: n << 126

Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[dwg: Added test-shift128 to .gitignore]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
5 files changed
tree: 2944e5725ea7a9f77c4c5811961ecb1d2f610a4c
  1. audio/
  2. backends/
  3. block/
  4. bsd-user/
  5. contrib/
  6. crypto/
  7. default-configs/
  8. disas/
  9. docs/
  10. fpu/
  11. fsdev/
  12. gdb-xml/
  13. hw/
  14. include/
  15. io/
  16. libdecnumber/
  17. linux-headers/
  18. linux-user/
  19. migration/
  20. nbd/
  21. net/
  22. pc-bios/
  23. po/
  24. qapi/
  25. qga/
  26. qobject/
  27. qom/
  28. replay/
  29. roms/
  30. scripts/
  31. slirp/
  32. stubs/
  33. target/
  34. tcg/
  35. tests/
  36. trace/
  37. ui/
  38. util/
  39. dtc
  40. pixman
  41. .dir-locals.el
  42. .exrc
  43. .gitignore
  44. .gitmodules
  45. .mailmap
  46. .travis.yml
  47. accel.c
  48. aio-posix.c
  49. aio-win32.c
  50. arch_init.c
  51. async.c
  52. atomic_template.h
  53. balloon.c
  54. block.c
  55. blockdev-nbd.c
  56. blockdev.c
  57. blockjob.c
  58. bootdevice.c
  59. bt-host.c
  60. bt-vhci.c
  61. Changelog
  62. CODING_STYLE
  63. configure
  64. COPYING
  65. COPYING.LIB
  66. cpu-exec-common.c
  67. cpu-exec.c
  68. cpus-common.c
  69. cpus.c
  70. cputlb.c
  71. device-hotplug.c
  72. device_tree.c
  73. disas.c
  74. dma-helpers.c
  75. dump.c
  76. exec.c
  77. gdbstub.c
  78. HACKING
  79. hax-stub.c
  80. hmp-commands-info.hx
  81. hmp-commands.hx
  82. hmp.c
  83. hmp.h
  84. iohandler.c
  85. ioport.c
  86. iothread.c
  87. kvm-all.c
  88. kvm-stub.c
  89. LICENSE
  90. main-loop.c
  91. MAINTAINERS
  92. Makefile
  93. Makefile.objs
  94. Makefile.target
  95. memory.c
  96. memory_ldst.inc.c
  97. memory_mapping.c
  98. module-common.c
  99. monitor.c
  100. numa.c
  101. os-posix.c
  102. os-win32.c
  103. page_cache.c
  104. qapi-schema.json
  105. qdev-monitor.c
  106. qdict-test-data.txt
  107. qemu-bridge-helper.c
  108. qemu-char.c
  109. qemu-doc.texi
  110. qemu-ga.texi
  111. qemu-img-cmds.hx
  112. qemu-img.c
  113. qemu-img.texi
  114. qemu-io-cmds.c
  115. qemu-io.c
  116. qemu-nbd.c
  117. qemu-nbd.texi
  118. qemu-option-trace.texi
  119. qemu-options-wrapper.h
  120. qemu-options.h
  121. qemu-options.hx
  122. qemu-seccomp.c
  123. qemu-tech.texi
  124. qemu-timer.c
  125. qemu.nsi
  126. qemu.sasl
  127. qmp.c
  128. qtest.c
  129. README
  130. replication.c
  131. replication.h
  132. rules.mak
  133. softmmu_template.h
  134. spice-qemu-char.c
  135. tcg-runtime.c
  136. tci.c
  137. thread-pool.c
  138. thunk.c
  139. tpm.c
  140. trace-events
  141. translate-all.c
  142. translate-all.h
  143. translate-common.c
  144. user-exec-stub.c
  145. user-exec.c
  146. VERSION
  147. version.rc
  148. vl.c
  149. xen-common-stub.c
  150. xen-common.c
  151. xen-hvm-stub.c
  152. xen-hvm.c
  153. xen-mapcache.c