[v1] Add jump table support for objtool on LoongArch

[PATCH v1 0/6] Add jump table support for objtool on LoongArch

Tiezhu Yang posted 6 patches 1 month, 1 week ago

Diff against v1 v2 v3 v4
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There is a newer version of this series

arch/loongarch/Kconfig                 |  9 +++-
arch/loongarch/Makefile                |  5 +-
arch/loongarch/include/asm/compiler.h  | 13 ++++++
kernel/bpf/core.c                      |  9 ++++
tools/objtool/arch/loongarch/special.c | 63 +++++++++++++++++++++++++-
tools/objtool/check.c                  | 20 ++++++--
6 files changed, 109 insertions(+), 10 deletions(-)
create mode 100644 arch/loongarch/include/asm/compiler.h

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[PATCH v1 0/6] Add jump table support for objtool on LoongArch

Posted by Tiezhu Yang 1 month, 1 week ago

This series is based on 6.12-rc3, tested with the latest (20241012)
upstream mainline binutils and gcc.

The first three patches are to support the jump table of switch cases,
the last three patches are to support the jump table of computed gotos,
patch #4 is a small change of kernel/bpf/core.c, the other patches are
related with tools/objtool and arch/loongarch.

Tiezhu Yang (6):
  objtool: Check various symbol types for jump table
  objtool/LoongArch: Add support for jump table
  LoongArch: Enable jump table for objtool
  bpf, core: Add weak arch_prepare_goto()
  LoongArch: Define specified arch_prepare_goto()
  objtool/LoongArch: Add support for goto table

 arch/loongarch/Kconfig                 |  9 +++-
 arch/loongarch/Makefile                |  5 +-
 arch/loongarch/include/asm/compiler.h  | 13 ++++++
 kernel/bpf/core.c                      |  9 ++++
 tools/objtool/arch/loongarch/special.c | 63 +++++++++++++++++++++++++-
 tools/objtool/check.c                  | 20 ++++++--
 6 files changed, 109 insertions(+), 10 deletions(-)
 create mode 100644 arch/loongarch/include/asm/compiler.h

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2.42.0