From: Matt Fleming <matt@console-pimps.org>
Date: Sun, 16 Aug 2009 00:44:33 +0000 (+0100)
Subject: sh: Add support for DWARF GNU extensions
X-Git-Tag: v2.6.32-rc1~640^2~44^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cd7246f0e2747bd2b43d25d0f63f05db182a62c0;p=pandora-kernel.git

sh: Add support for DWARF GNU extensions

Also, remove the "fix" to DW_CFA_def_cfa_register where we reset the
frame's cfa_offset to 0. This action is incorrect when handling
DW_CFA_def_cfa_register as the DWARF spec specifically states that the
previous contents of cfa_offset should be used with the new
register. The reason that I thought cfa_offset should be reset to 0 was
because it was being assigned a bogus value prior to executing the
DW_CFA_def_cfa_register op. It turns out that the bogus cfa_offset value
came from interpreting .cfi_escape pseudo-ops (those used by the GNU
extensions) as CFA_DW_def_cfa ops.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
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