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linux.h (DBX_REGISTER_NUMBER): Define so to map a special index for MD_FALLBACK_FRAME_STATE_FOR to itself.

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* config/sh/linux.h (DBX_REGISTER_NUMBER): Define so to map a
	special index for MD_FALLBACK_FRAME_STATE_FOR to itself.

From-SVN: r70422
This commit is contained in:
Kaz Kojima 2003-08-14 00:11:19 +00:00
parent 996b4f8f5a
commit 235b4b36bf
2 changed files with 16 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2003-08-13 Kaz Kojima <kkojima@gcc.gnu.org>
* config/sh/linux.h (DBX_REGISTER_NUMBER): Define so to map a
special index for MD_FALLBACK_FRAME_STATE_FOR to itself.
2003-08-13 J"orn Rennecke <joern.rennecke@superh.com>
* sh.c (sh_get_pr_initial_val): Always wrap in unspec for TARGET_SH1.

11
gcc/config/sh/linux.h
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@ -277,3 +277,14 @@ do { \
#endif /* defined (__SH5__) */
#endif /* IN_LIBGCC2 */
/* For SH3 and SH4, we use a slot of the unwind frame which correspond
to a fake register number 16 as a placeholder for the return address
in MD_FALLBACK_FRAME_STATE_FOR and its content will be read with
_Unwind_GetGR which uses dwarf_reg_size_table to get the size of
the register. So the entry of dwarf_reg_size_table corresponding to
this slot must be set. To do this, we redefine DBX_REGISTER_NUMBER
so as to return itself for 16. */
#undef DBX_REGISTER_NUMBER
#define DBX_REGISTER_NUMBER(REGNO) \
((! TARGET_SH5 && (REGNO) == 16) ? 16 : SH_DBX_REGISTER_NUMBER (REGNO))