Stop "objdump -d" from disassembling past a symbolic address.

include	* dis-asm.h (struct disassemble_info): Add stop_vma field.

binuti  * objdump.c (disassemble_bytes): Set the stop_vma field in the
	disassemble_info structure when disassembling code sections with
	-d.
	* doc/binutils.texi (objdump): Document the discrepancy between -d
	and -D.

opcodes	* dis-buf.c (buffer_read_memory): Fail is stop_vma is set and the
	requested region lies beyond it.
	* bfin-dis.c (print_insn_bfin): Ignore sysop instructions when
	looking for 32-bit insns.
	* mcore-dis.c (print_insn_mcore): Disable stop_vma when reading
	data.
	* sh-dis.c (print_insn_sh): Likewise.
	* tic6x-dis.c (print_insn_tic6x): Disable stop_vma when reading
	blocks of instructions.
	* vax-dis.c (print_insn_vax): Check that the requested address
	does not clash with the stop_vma.

tests	* gas/arm/backslash-at.s: Add extra .byte directives so that the
	foo symbol does not appear to point half way through an
	instruction.
	* gas/arm/backslash-at.d: Update expected disassembly.
	* gas/i386/ilp32/x86-64-opcode-inval-intel.d: Likewise.
	* gas/i386/ilp32/x86-64-opcode-inval.d: Likewise.
	* gas/i386/x86-64-opcode-inval-intel.d: Likewise.
	* gas/i386/x86-64-opcode-inval.d: Likewise.

1 files changed, 9 insertions, 0 deletions

diff --git a/binutils/doc/binutils.texi b/binutils/doc/binutils.texi
index 75852e6..0781036 100644
--- a/binutils/doc/binutils.texi
+++ b/binutils/doc/binutils.texi
@@ -2041,6 +2041,15 @@ expected to contain instructions.
 Like @option{-d}, but disassemble the contents of all sections, not just
 those expected to contain instructions.
 
+This option also has a subtle effect on the disassembly of
+instructions in code sections.  When option @option{-d} is in effect
+objdump will assume that any symbols present in a code section occur
+on the boundary between instructions and it will refuse to disassemble
+across such a boundary.  When option @option{-D} is in effect however
+this assumption is supressed.  This means that it is possible for the
+output of @option{-d} and @option{-D} to differ if, for example, data
+is stored in code sections.
+
 If the target is an ARM architecture this switch also has the effect
 of forcing the disassembler to decode pieces of data found in code
 sections as if they were instructions.