[POWERPC] Make xmon disassembly optional

While adding spu disassembly support it struck me that we're actually
carrying quite a lot of code around, just to do disassembly in the case
of a crash.

While on large systems it's not an issue, on smaller ones it might be
nice to have xmon - but without the weight of the disassembly support.
For a Cell build this saves ~230KB (!), and for pSeries ~195KB.

We still support the 'di' and 'sdi' commands, however they just dump
the instruction in hex.

Move the definitions into a header to clean xmon.c just a tiny bit.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/arch/powerpc/xmon/Makefile b/arch/powerpc/xmon/Makefile
index 4f274056e770..69303575d3d6 100644
--- a/arch/powerpc/xmon/Makefile
+++ b/arch/powerpc/xmon/Makefile
@@ -3,6 +3,10 @@
 ifdef CONFIG_PPC64
 EXTRA_CFLAGS += -mno-minimal-toc
 endif
-obj-y                   += xmon.o ppc-dis.o ppc-opc.o setjmp.o start.o \
-                           nonstdio.o
+
+obj-y                   += xmon.o setjmp.o start.o nonstdio.o
+
+ifdef CONFIG_XMON_DISASSEMBLY
+obj-y                   += ppc-dis.o ppc-opc.o
 obj-$(CONFIG_PPC_CELL)  += spu-dis.o spu-opc.o
+endif