[Minios-devel] [UNIKRAFT PATCH RFC 0/5] Support dumping backtrace in Unikraft

[Jia He <justin.he@xxxxxxx>]

This patch series is to enhance the debuggability of Unikraft.

It adds a kallsym tool from linux kernel in unikraft build system. kallsym
will check and translate all the mapping between symbol name and its
address. Then in the 2nd linking, the generated symbol.S will be compiled
and linked into new Unikraft image. To avoid the relocation symbol in 2nd
linking, 3rd linking is used.

Whenever anyware in Unikraft want to dump its backtrace at that time,
this patch series provide a help uk_dump_backtrace to implement it. 

Tested on arm64 kvm plat only. But I believe x86 can also use this.

Jia He (5):
  build: Add build tool to translate symbol to assembly codes
  plat/common: Introduce read_allsymbol
  build: Link image for 3 times if backtrace is needed
  build: Add the config option DEBUG_BACK_TRACE
  plat/common/arm: Add uk_dump_backtrace after trapping into exception

 Config.uk                            |   6 +
 Makefile                             |   1 +
 plat/common/arm/traps.c              |   3 +
 plat/common/include/read_allsymbol.h |  70 +++
 plat/common/read_allsymbol.c         | 332 ++++++++++++
 plat/kvm/Linker.uk                   |  71 ++-
 plat/kvm/Makefile.uk                 |   8 +
 support/kallsyms/kallsyms.c          | 773 +++++++++++++++++++++++++++
 8 files changed, 1263 insertions(+), 1 deletion(-)
 create mode 100644 plat/common/include/read_allsymbol.h
 create mode 100644 plat/common/read_allsymbol.c
 create mode 100644 support/kallsyms/kallsyms.c

-- 
2.17.1


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