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objtool: Decode unwind hint register depending on architecture

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The set of registers that can be included in an unwind hint and their
encoding will depend on the architecture. Have arch specific code to
decode that register.

Signed-off-by: Julien Thierry <jthierry@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
This commit is contained in:
Julien Thierry
2020-09-04 16:30:28 +01:00
committed by Josh Poimboeuf
parent ee819aedf3
commit edea9e6bcb
3 changed files with 40 additions and 26 deletions
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tools/objtool/arch.h
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@@ -88,4 +88,6 @@ unsigned long arch_dest_reloc_offset(int addend);
const char *arch_nop_insn(int len);
int arch_decode_hint_reg(struct instruction *insn, u8 sp_reg);
#endif /* _ARCH_H */