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Allow for architecture specific dwarf_to_unw_regnum()

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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.
This commit is contained in:
Tommi Rantala 2012-08-02 21:55:30 +03:00
parent 54a096a5af
commit 6a5da54b8a
1 changed files with 4 additions and 4 deletions
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8
include/dwarf_i.h
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@ -15,13 +15,13 @@
# define dwarf_addr_size(as) (sizeof (unw_word_t)) # define dwarf_addr_size(as) (sizeof (unw_word_t))
#endif #endif
#define dwarf_to_unw_regnum_map UNW_OBJ (dwarf_to_unw_regnum_map) #ifndef dwarf_to_unw_regnum
# define dwarf_to_unw_regnum_map UNW_OBJ (dwarf_to_unw_regnum_map)
extern uint8_t dwarf_to_unw_regnum_map[DWARF_REGNUM_MAP_LENGTH]; extern uint8_t dwarf_to_unw_regnum_map[DWARF_REGNUM_MAP_LENGTH];
/* REG is evaluated multiple times; it better be side-effects free! */ /* REG is evaluated multiple times; it better be side-effects free! */
#define dwarf_to_unw_regnum(reg) \ # define dwarf_to_unw_regnum(reg) \
(((reg) <= DWARF_REGNUM_MAP_LENGTH) ? dwarf_to_unw_regnum_map[reg] : 0) (((reg) <= DWARF_REGNUM_MAP_LENGTH) ? dwarf_to_unw_regnum_map[reg] : 0)
#endif
#ifdef UNW_LOCAL_ONLY #ifdef UNW_LOCAL_ONLY