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qemu / qemu / d38e31ef740d102020d1b14b5a2becd4336b462d
commitd38e31ef740d102020d1b14b5a2becd4336b462d[log] [tgz]
authorBibo Mao <maobibo@loongson.cn>Fri Jun 07 11:50:16 2024 +0800
committerSong Gao <gaosong@loongson.cn>Fri Jul 12 09:41:18 2024 +0800
tree734ff27ecb22b0939abd4582aabe2d26ca708f9f
parent36ff178716054d36ca2a61cdf3452514bd95220b [diff]
target/loongarch/kvm: Add software breakpoint support

With KVM virtualization, debug exception is injected to guest kernel
rather than host for normal break intruction. Here hypercall
instruction with special code is used for sw breakpoint usage,
and detailed instruction comes from kvm kernel with user API
KVM_REG_LOONGARCH_DEBUG_INST.

Now only software breakpoint is supported, and it is allowed to
insert/remove software breakpoint. We can debug guest kernel with gdb
method after kernel is loaded, hardware breakpoint will be added in later.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Tested-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20240607035016.2975799-1-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
2 files changed
tree: 734ff27ecb22b0939abd4582aabe2d26ca708f9f
  1. .github/
  2. .gitlab/
  3. .gitlab-ci.d/
  4. accel/
  5. audio/
  6. authz/
  7. backends/
  8. block/
  9. bsd-user/
  10. chardev/
  11. common-user/
  12. configs/
  13. contrib/
  14. crypto/
  15. disas/
  16. docs/
  17. dump/
  18. ebpf/
  19. fpu/
  20. fsdev/
  21. gdb-xml/
  22. gdbstub/
  23. host/
  24. hw/
  25. include/
  26. io/
  27. libdecnumber/
  28. linux-headers/
  29. linux-user/
  30. migration/
  31. monitor/
  32. nbd/
  33. net/
  34. pc-bios/
  35. plugins/
  36. po/
  37. python/
  38. qapi/
  39. qga/
  40. qobject/
  41. qom/
  42. replay/
  43. roms/
  44. scripts/
  45. scsi/
  46. semihosting/
  47. stats/
  48. storage-daemon/
  49. stubs/
  50. subprojects/
  51. system/
  52. target/
  53. tcg/
  54. tests/
  55. tools/
  56. trace/
  57. ui/
  58. util/
  59. .dir-locals.el
  60. .editorconfig
  61. .exrc
  62. .gdbinit
  63. .git-blame-ignore-revs
  64. .gitattributes
  65. .gitignore
  66. .gitlab-ci.yml
  67. .gitmodules
  68. .gitpublish
  69. .mailmap
  70. .patchew.yml
  71. .readthedocs.yml
  72. .travis.yml
  73. block.c
  74. blockdev-nbd.c
  75. blockdev.c
  76. blockjob.c
  77. configure
  78. COPYING
  79. COPYING.LIB
  80. cpu-common.c
  81. cpu-target.c
  82. event-loop-base.c
  83. gitdm.config
  84. hmp-commands-info.hx
  85. hmp-commands.hx
  86. iothread.c
  87. job-qmp.c
  88. job.c
  89. Kconfig
  90. Kconfig.host
  91. LICENSE
  92. MAINTAINERS
  93. Makefile
  94. meson.build
  95. meson_options.txt
  96. module-common.c
  97. os-posix.c
  98. os-win32.c
  99. page-target.c
  100. page-vary-common.c
  101. page-vary-target.c
  102. pythondeps.toml
  103. qemu-bridge-helper.c
  104. qemu-edid.c
  105. qemu-img-cmds.hx
  106. qemu-img.c
  107. qemu-io-cmds.c
  108. qemu-io.c
  109. qemu-keymap.c
  110. qemu-nbd.c
  111. qemu-options.hx
  112. qemu.nsi
  113. qemu.sasl
  114. README.rst
  115. replication.c
  116. trace-events
  117. VERSION
  118. version.rc