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xtensa: make sure ar_base is initialized

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ar_base is uninitialized for cores w/o windowed registers as their
regmap doesn't have register 0x0100.
Check that ar_base is initialized and if not initialize it with a0_base.

gdb/
	* xtensa-tdep.c (xtensa_derive_tdep): Make sure ar_base is
	initialized.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov
2015-06-07 22:43:49 +03:00
committed by Alexey Lapshin
parent 5a7b8602ad
commit 30fcf51e11
1 changed files with 3 additions and 0 deletions
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3
gdb/xtensa-tdep.c
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@@ -3138,6 +3138,9 @@ xtensa_derive_tdep (xtensa_gdbarch_tdep *tdep)
if (tdep->num_regs == 0)
tdep->num_regs = tdep->num_nopriv_regs;
if (tdep->ar_base == -1)
tdep->ar_base = tdep->a0_base;
/* Number of pseudo registers. */
tdep->num_pseudo_regs = n - tdep->num_regs;