softfloat: Add round-to-odd rounding mode

Power ISA 3.0 introduces a few quadruple precision floating point
instructions that support round-to-odd rounding mode. The
round-to-odd mode is explained as under:

Let Z be the intermediate arithmetic result or the operand of a convert
operation. If Z can be represented exactly in the target format, the
result is Z. Otherwise the result is either Z1 or Z2 whichever is odd.
Here Z1 and Z2 are the next larger and smaller numbers representable
in the target format respectively.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2 files changed
tree: ea047e7fd74f4518830d8bb3a456088dce977fea
  1. audio/
  2. backends/
  3. block/
  4. bsd-user/
  5. chardev/
  6. contrib/
  7. crypto/
  8. default-configs/
  9. disas/
  10. docs/
  11. fpu/
  12. fsdev/
  13. gdb-xml/
  14. hw/
  15. include/
  16. io/
  17. libdecnumber/
  18. linux-headers/
  19. linux-user/
  20. migration/
  21. nbd/
  22. net/
  23. pc-bios/
  24. po/
  25. qapi/
  26. qga/
  27. qobject/
  28. qom/
  29. replay/
  30. roms/
  31. scripts/
  32. slirp/
  33. stubs/
  34. target/
  35. tcg/
  36. tests/
  37. trace/
  38. ui/
  39. util/
  40. .dir-locals.el
  41. .exrc
  42. .gitignore
  43. .gitmodules
  44. .mailmap
  45. .travis.yml
  46. accel.c
  47. arch_init.c
  48. atomic_template.h
  49. balloon.c
  50. block.c
  51. blockdev-nbd.c
  52. blockdev.c
  53. blockjob.c
  54. bootdevice.c
  55. bt-host.c
  56. bt-vhci.c
  57. Changelog
  58. CODING_STYLE
  59. configure
  60. COPYING
  61. COPYING.LIB
  62. cpu-exec-common.c
  63. cpu-exec.c
  64. cpus-common.c
  65. cpus.c
  66. cputlb.c
  67. device-hotplug.c
  68. device_tree.c
  69. disas.c
  70. dma-helpers.c
  71. dump.c
  72. exec.c
  73. gdbstub.c
  74. HACKING
  75. hax-stub.c
  76. hmp-commands-info.hx
  77. hmp-commands.hx
  78. hmp.c
  79. hmp.h
  80. ioport.c
  81. iothread.c
  82. kvm-all.c
  83. kvm-stub.c
  84. LICENSE
  85. MAINTAINERS
  86. Makefile
  87. Makefile.objs
  88. Makefile.target
  89. memory.c
  90. memory_ldst.inc.c
  91. memory_mapping.c
  92. module-common.c
  93. monitor.c
  94. numa.c
  95. os-posix.c
  96. os-win32.c
  97. page_cache.c
  98. qapi-schema.json
  99. qdev-monitor.c
  100. qdict-test-data.txt
  101. qemu-bridge-helper.c
  102. qemu-doc.texi
  103. qemu-ga.texi
  104. qemu-img-cmds.hx
  105. qemu-img.c
  106. qemu-img.texi
  107. qemu-io-cmds.c
  108. qemu-io.c
  109. qemu-nbd.c
  110. qemu-nbd.texi
  111. qemu-option-trace.texi
  112. qemu-options-wrapper.h
  113. qemu-options.h
  114. qemu-options.hx
  115. qemu-seccomp.c
  116. qemu-tech.texi
  117. qemu.nsi
  118. qemu.sasl
  119. qmp.c
  120. qtest.c
  121. README
  122. replication.c
  123. replication.h
  124. rules.mak
  125. softmmu_template.h
  126. spice-qemu-char.c
  127. tcg-runtime.c
  128. tci.c
  129. thunk.c
  130. tpm.c
  131. trace-events
  132. translate-all.c
  133. translate-all.h
  134. translate-common.c
  135. user-exec-stub.c
  136. user-exec.c
  137. VERSION
  138. version.rc
  139. vl.c
  140. xen-common-stub.c
  141. xen-common.c
  142. xen-hvm-stub.c
  143. xen-hvm.c
  144. xen-mapcache.c