linux-kernel - [PATCH 07/24] x86: Allow x86-32 instruction decoder selftest on x86-64

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Message-Id: <1253648302-5771-8-git-send-email-fweisbec@gmail.com>
Date:	Tue, 22 Sep 2009 21:38:05 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Li Zefan <lizf@...fujitsu.com>,
	Jim Keniston <jkenisto@...ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: [PATCH 07/24] x86: Allow x86-32 instruction decoder selftest on x86-64

From: Masami Hiramatsu <mhiramat@...hat.com>

Pass $(CONFIG_64BIT) to the x86 insn decoder selftest in case we are
decoding 32bit code on x86-64, which will happen when building kernel
with ARCH=i386 on x86-64.

Signed-off-by: Masami Hiramatsu <mhiramat@...hat.com>
Cc: Jim Keniston <jkenisto@...ibm.com>
Cc: Ingo Molnar <mingo@...e.hu>
LKML-Reference: <20090828221319.8778.88508.stgit@...alhost.localdomain>
Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
---
 arch/x86/tools/Makefile       |    2 +-
 arch/x86/tools/test_get_len.c |   14 +++++++-------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/x86/tools/Makefile b/arch/x86/tools/Makefile
index 95e9cc4..1bd006c 100644
--- a/arch/x86/tools/Makefile
+++ b/arch/x86/tools/Makefile
@@ -1,6 +1,6 @@
 PHONY += posttest
 quiet_cmd_posttest = TEST    $@
-      cmd_posttest = $(OBJDUMP) -d -j .text $(objtree)/vmlinux | awk -f $(srctree)/arch/x86/tools/distill.awk | $(obj)/test_get_len
+      cmd_posttest = $(OBJDUMP) -d -j .text $(objtree)/vmlinux | awk -f $(srctree)/arch/x86/tools/distill.awk | $(obj)/test_get_len $(CONFIG_64BIT)
 
 posttest: $(obj)/test_get_len vmlinux
 	$(call cmd,posttest)
diff --git a/arch/x86/tools/test_get_len.c b/arch/x86/tools/test_get_len.c
index 1e81adb..a3273f4 100644
--- a/arch/x86/tools/test_get_len.c
+++ b/arch/x86/tools/test_get_len.c
@@ -45,7 +45,7 @@ const char *prog;
 static void usage(void)
 {
 	fprintf(stderr, "Usage: objdump -d a.out | awk -f distill.awk |"
-		" ./test_get_len\n");
+		" %s [y|n](64bit flag)\n", prog);
 	exit(1);
 }
 
@@ -63,11 +63,15 @@ int main(int argc, char **argv)
 	unsigned char insn_buf[16];
 	struct insn insn;
 	int insns = 0;
+	int x86_64 = 0;
 
 	prog = argv[0];
-	if (argc > 1)
+	if (argc > 2)
 		usage();
 
+	if (argc == 2 && argv[1][0] == 'y')
+		x86_64 = 1;
+
 	while (fgets(line, BUFSIZE, stdin)) {
 		char copy[BUFSIZE], *s, *tab1, *tab2;
 		int nb = 0;
@@ -93,11 +97,7 @@ int main(int argc, char **argv)
 				break;
 		}
 		/* Decode an instruction */
-#ifdef __x86_64__
-		insn_init(&insn, insn_buf, 1);
-#else
-		insn_init(&insn, insn_buf, 0);
-#endif
+		insn_init(&insn, insn_buf, x86_64);
 		insn_get_length(&insn);
 		if (insn.length != nb) {
 			fprintf(stderr, "Error: %s", line);
-- 
1.6.2.3

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