patches/gdb/6.8a/130-reg-no-longer-active.patch
author Esben Haabendal <esben.haabendal@prevas.dk>
Wed Sep 26 09:09:23 2012 +0200 (2012-09-26)
changeset 3065 603ccf80c48b
parent 1343 e6f6153d318c
permissions -rw-r--r--
kernel/linux: change m68k/no-mmu linux arch tuple to use -uclinux

GCC requires m68k arch tuples to be *-*-uclinux-* to support Linux on
no-mmu m68k (ColdFire) cpus.

Blackfin arch tuple must be *-*-linux-uclibc for FD_PIC_ELF toolchains,
so we cannot just switch to uclinux for no-mmu Linux toolchains.

Signed-off-by: "Esben Haabendal" <esben@haabendal.dk>
Message-Id: <876271s1ee.fsf@arh128.prevas.dk>
PatchWork-Id: 186976
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Fix bug reported by Thomas Petazzoni <thomas.petazzoni@free-electrons.com>:
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See: http://sourceware.org/ml/crossgcc/2009-05/msg00055.html
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     https://bugzilla.redhat.com/show_bug.cgi?id=436037
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Fix from: http://cvs.fedoraproject.org/viewvc/devel/gdb/gdb-6.8-bz436037-reg-no-longer-active.patch?revision=1.1
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diff -d -urpN src.0/gdb/valops.c src.1/gdb/valops.c
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--- src.0/gdb/valops.c	2008-07-27 04:00:03.000000000 +0200
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+++ src.1/gdb/valops.c	2008-07-31 15:17:42.000000000 +0200
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@@ -813,10 +813,18 @@ value_assign (struct value *toval, struc
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 	struct frame_info *frame;
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 	int value_reg;
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-	/* Figure out which frame this is in currently.  */
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-	frame = frame_find_by_id (VALUE_FRAME_ID (toval));
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 	value_reg = VALUE_REGNUM (toval);
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+	/* Figure out which frame this is in currently.  */
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+	frame = frame_find_by_id (VALUE_FRAME_ID (toval));
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+	/* "set $reg+=1" should work on programs with no debug info,
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+	   but frame_find_by_id returns NULL here (RH bug 436037).
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+	   Use current frame, it represents CPU state in this case.
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+	   If frame_find_by_id is changed to do it internally
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+	   (it is contemplated there), remove this.  */
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+	if (!frame)
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+	  frame = get_current_frame ();
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+	/* Probably never happens.  */
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 	if (!frame)
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 	  error (_("Value being assigned to is no longer active."));
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