path: root/arch
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authorMichael Ellerman <michael@ellerman.id.au>2006-11-23 00:46:45 +0100
committerPaul Mackerras <paulus@samba.org>2006-12-04 20:40:32 +1100
commite0426047cb684842700f0098f74842a38260dbae (patch)
treeeec4033ad96e019dbb4e00863c3e03ca6c3ae090 /arch
parentaf89fb8041562508895c8f3ba04790d7c2f4338c (diff)
[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>
Diffstat (limited to 'arch')
6 files changed, 49 insertions, 10 deletions
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 5ad149b47e3..ff16063d67f 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -98,6 +98,15 @@ config XMON_DEFAULT
xmon is normally disabled unless booted with 'xmon=on'.
Use 'xmon=off' to disable xmon init during runtime.
+ bool "Include disassembly support in xmon"
+ depends on XMON
+ default y
+ help
+ Include support for disassembling in xmon. You probably want
+ to say Y here, unless you're building for a memory-constrained
+ system.
bool "Use separate kernel stacks when processing interrupts"
depends on PPC64
diff --git a/arch/powerpc/xmon/Makefile b/arch/powerpc/xmon/Makefile
index 4f274056e77..69303575d3d 100644
--- a/arch/powerpc/xmon/Makefile
+++ b/arch/powerpc/xmon/Makefile
@@ -3,6 +3,10 @@
ifdef CONFIG_PPC64
EXTRA_CFLAGS += -mno-minimal-toc
-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
+obj-y += ppc-dis.o ppc-opc.o
obj-$(CONFIG_PPC_CELL) += spu-dis.o spu-opc.o
diff --git a/arch/powerpc/xmon/dis-asm.h b/arch/powerpc/xmon/dis-asm.h
new file mode 100644
index 00000000000..be3533b93f3
--- /dev/null
+++ b/arch/powerpc/xmon/dis-asm.h
@@ -0,0 +1,31 @@
+ * Copyright (C) 2006 Michael Ellerman, IBM Corporation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+extern void print_address (unsigned long memaddr);
+extern int print_insn_powerpc(unsigned long insn, unsigned long memaddr);
+extern int print_insn_spu(unsigned long insn, unsigned long memaddr);
+static inline int print_insn_powerpc(unsigned long insn, unsigned long memaddr)
+ printf("%.8x", insn);
+ return 0;
+static inline int print_insn_spu(unsigned long insn, unsigned long memaddr)
+ printf("%.8x", insn);
+ return 0;
+#endif /* _POWERPC_XMON_DIS_ASM_H */
diff --git a/arch/powerpc/xmon/ppc-dis.c b/arch/powerpc/xmon/ppc-dis.c
index 3b67bee4830..08652742fa7 100644
--- a/arch/powerpc/xmon/ppc-dis.c
+++ b/arch/powerpc/xmon/ppc-dis.c
@@ -21,8 +21,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
#include "nonstdio.h"
#include "ansidecl.h"
#include "ppc.h"
-extern void print_address (unsigned long memaddr);
+#include "dis-asm.h"
/* Print a PowerPC or POWER instruction. */
diff --git a/arch/powerpc/xmon/spu-dis.c b/arch/powerpc/xmon/spu-dis.c
index 75ac0815f1a..ee929c641bf 100644
--- a/arch/powerpc/xmon/spu-dis.c
+++ b/arch/powerpc/xmon/spu-dis.c
@@ -22,8 +22,7 @@
#include "nonstdio.h"
#include "ansidecl.h"
#include "spu.h"
-extern void print_address (unsigned long memaddr);
+#include "dis-asm.h"
/* This file provides a disassembler function which uses
the disassembler interface defined in dis-asm.h. */
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 7a0eec23cb9..c999638cc2d 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -47,6 +47,7 @@
#include "nonstdio.h"
+#include "dis-asm.h"
#define scanhex xmon_scanhex
#define skipbl xmon_skipbl
@@ -110,7 +111,6 @@ static int bsesc(void);
static void dump(void);
static void prdump(unsigned long, long);
static int ppc_inst_dump(unsigned long, long, int);
-void print_address(unsigned long);
static void backtrace(struct pt_regs *);
static void excprint(struct pt_regs *);
static void prregs(struct pt_regs *);
@@ -154,9 +154,6 @@ static int do_spu_cmd(void);
int xmon_no_auto_backtrace;
-extern int print_insn_powerpc(unsigned long insn, unsigned long memaddr);
-extern int print_insn_spu(unsigned long insn, unsigned long memaddr);
extern void xmon_enter(void);
extern void xmon_leave(void);