target-mips: add ERETNC instruction

ERETNC is identical to ERET except that an ERETNC will not clear the LLbit
that is set by execution of an LL instruction, and thus when placed between
an LL and SC sequence, will never cause the SC to fail.

Software can detect the presence of ERETNC by reading Config5.LLB

Change-Id: Ifbd263b8cbd974d97c9f9f29488618117a16b460
6 files changed
tree: 4c22ceae88a850d08f360cc0af9d451b5ceb7a9a
  1. audio/
  2. backends/
  3. block/
  4. bsd-user/
  5. default-configs/
  6. disas/
  7. docs/
  8. fpu/
  9. fsdev/
  10. gdb-xml/
  11. hw/
  12. include/
  13. libcacard/
  14. libdecnumber/
  15. linux-headers/
  16. linux-user/
  17. net/
  18. pc-bios/
  19. po/
  20. qapi/
  21. qga/
  22. qobject/
  23. qom/
  24. roms/
  25. scripts/
  26. slirp/
  27. stubs/
  28. sysconfigs/
  29. target-alpha/
  30. target-arm/
  31. target-cris/
  32. target-i386/
  33. target-lm32/
  34. target-m68k/
  35. target-microblaze/
  36. target-mips/
  37. target-moxie/
  38. target-openrisc/
  39. target-ppc/
  40. target-s390x/
  41. target-sh4/
  42. target-sparc/
  43. target-tricore/
  44. target-unicore32/
  45. target-xtensa/
  46. tcg/
  47. tests/
  48. trace/
  49. ui/
  50. util/
  51. .exrc
  52. .gitignore
  53. .gitmodules
  54. .mailmap
  55. .travis.yml
  56. accel.c
  57. aio-posix.c
  58. aio-win32.c
  59. android-commands.h
  60. android-console.c
  61. android-console.h
  62. arch_init.c
  63. async.c
  64. balloon.c
  65. block-migration.c
  66. block.c
  67. blockdev-nbd.c
  68. blockdev.c
  69. blockjob.c
  70. bootdevice.c
  71. bt-host.c
  72. bt-vhci.c
  73. Changelog
  74. CODING_STYLE
  75. configure
  76. COPYING
  77. COPYING.LIB
  78. coroutine-gthread.c
  79. coroutine-sigaltstack.c
  80. coroutine-ucontext.c
  81. coroutine-win32.c
  82. cpu-exec.c
  83. cpus.c
  84. cputlb.c
  85. device-hotplug.c
  86. device_tree.c
  87. disas.c
  88. dma-helpers.c
  89. dump.c
  90. exec.c
  91. gdbstub.c
  92. HACKING
  93. hmp-commands.hx
  94. hmp.c
  95. hmp.h
  96. iohandler.c
  97. ioport.c
  98. iothread.c
  99. kvm-all.c
  100. kvm-stub.c
  101. LICENSE
  102. main-loop.c
  103. MAINTAINERS
  104. Makefile
  105. Makefile.objs
  106. Makefile.target
  107. memory.c
  108. memory_mapping.c
  109. migration-exec.c
  110. migration-fd.c
  111. migration-rdma.c
  112. migration-tcp.c
  113. migration-unix.c
  114. migration.c
  115. module-common.c
  116. monitor.c
  117. nbd.c
  118. numa.c
  119. os-posix.c
  120. os-win32.c
  121. page_cache.c
  122. qapi-schema.json
  123. qdev-monitor.c
  124. qdict-test-data.txt
  125. qemu-bridge-helper.c
  126. qemu-char.c
  127. qemu-coroutine-io.c
  128. qemu-coroutine-lock.c
  129. qemu-coroutine-sleep.c
  130. qemu-coroutine.c
  131. qemu-doc.texi
  132. qemu-file-stdio.c
  133. qemu-file-unix.c
  134. qemu-file.c
  135. qemu-img-cmds.hx
  136. qemu-img.c
  137. qemu-img.texi
  138. qemu-io-cmds.c
  139. qemu-io.c
  140. qemu-log.c
  141. qemu-nbd.c
  142. qemu-nbd.texi
  143. qemu-options-wrapper.h
  144. qemu-options.h
  145. qemu-options.hx
  146. qemu-seccomp.c
  147. qemu-tech.texi
  148. qemu-timer.c
  149. qemu.nsi
  150. qemu.sasl
  151. qmp-commands.hx
  152. qmp.c
  153. qtest.c
  154. README
  155. rules.mak
  156. savevm.c
  157. softmmu_template.h
  158. spice-qemu-char.c
  159. tcg-runtime.c
  160. tci.c
  161. thread-pool.c
  162. thunk.c
  163. tpm.c
  164. trace-events
  165. translate-all.c
  166. translate-all.h
  167. user-exec.c
  168. VERSION
  169. version.rc
  170. vl.c
  171. vmstate.c
  172. xbzrle.c
  173. xen-common-stub.c
  174. xen-common.c
  175. xen-hvm-stub.c
  176. xen-hvm.c
  177. xen-mapcache.c