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Allow for architecture specific dwarf_to_unw_regnum()
For a few of the supported architectures we can use one-to-one mapping from the dwarf to the libunwind register numbers. Allow the architectures to define their own dwarf_to_unw_regnum() macro to do this easily.
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1 changed files with 4 additions and 4 deletions
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@ -15,13 +15,13 @@
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# define dwarf_addr_size(as) (sizeof (unw_word_t))
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#endif
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#ifndef dwarf_to_unw_regnum
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# define dwarf_to_unw_regnum_map UNW_OBJ (dwarf_to_unw_regnum_map)
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extern uint8_t dwarf_to_unw_regnum_map[DWARF_REGNUM_MAP_LENGTH];
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/* REG is evaluated multiple times; it better be side-effects free! */
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# define dwarf_to_unw_regnum(reg) \
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(((reg) <= DWARF_REGNUM_MAP_LENGTH) ? dwarf_to_unw_regnum_map[reg] : 0)
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#endif
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#ifdef UNW_LOCAL_ONLY
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