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Victor Kamensky ca45ab26f5 read_pieced_value do big endian processing only in case of valid gdb_regnum
During armv7b testing gdb.base/store.exp test was failling with
'GDB internal error' with the following message:

Temporary breakpoint 1, wack_double (u=
../../binutils-gdb/gdb/regcache.c:177: internal-error: register_size: Assertion `regnum >= 0 && regnum < (gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch))' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.

It turns out that compiler generated DWARF with non-existent
register numbers. The compiler issue is present in both little endian
(armv7) and big endian (armv7b) (it is separate issue). Here is
example for one of formal parameters of wack_double function:

 <2><792>: Abbrev Number: 10 (DW_TAG_formal_parameter)
    <793>   DW_AT_name        : u
    <795>   DW_AT_decl_file   : 1
    <796>   DW_AT_decl_line   : 115
    <797>   DW_AT_type        : <0x57c>
    <79b>   DW_AT_location    : 6 byte block: 6d 93 4 6c 93 4   (DW_OP_reg29 (r29); DW_OP_piece: 4; DW_OP_reg28 (r28); DW_OP_piece: 4)

In both big and little endian cases gdbarch_dwarf2_reg_to_regnum
returns -1 which is stored into gdb_regnum. But it causes severe
problem only in big endian case because in read_pieced_value and
write_pieced_value functions BFD_ENDIAN_BIG related processing
happen regardless of gdb_regnum value, for example register_size
function is called and in case of gdb_regnum=-1, it cause
'GDB internal error' and crash.

Solution is to move BFD_ENDIAN_BIG related processing under
(gdb_regnum != -1) branch of processing.

gdb/ChangeLog:

2014-11-02  Victor Kamensky  <victor.kamensky@linaro.org>

	* dwarf2loc.c (read_pieced_value): Do big endian
	processing only if gdb_regnum is not -1.
	(write_pieced_value): Ditto.
2014-11-02 13:30:14 -08:00
bfd daily update 2014-11-02 09:30:42 +10:30
binutils Fix %lx format used with bfd_size_type mismatch in readelf.c 2014-11-01 03:34:00 +01:00
config
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gas MIPS: Add Octeon 3 support 2014-10-31 13:50:10 -07:00
gdb read_pieced_value do big endian processing only in case of valid gdb_regnum 2014-11-02 13:30:14 -08:00
gold Misc about gold for aarch64 backend. 2014-10-29 11:31:36 -07:00
gprof Updated/new translations provided by the Translations Project. 2014-10-29 16:34:04 +00:00
include MIPS: Add Octeon 3 support 2014-10-31 13:50:10 -07:00
intl
ld ld/testsuite/ld-unique: Fix running unique tests on ARM 2014-10-30 11:06:43 +00:00
libdecnumber
libiberty Use strtod instead of strtold in libiberty/d-demangle.c 2014-10-16 14:52:17 -07:00
opcodes MIPS: Add Octeon 3 support 2014-10-31 13:50:10 -07:00
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
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It is now possible to automatically configure and build a variety of
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	./configure 
	make

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then do:
	make install

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the name as an argument, for instance ``./configure sun4''.  You can
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	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

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