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x86: insn decoder test checks objdump version

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Check objdump version before using it for insn decoder build test,
because some older objdump can't decode AVX code correctly.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Jim Keniston <jkenisto@us.ibm.com>
LKML-Reference: <20091120171314.6715.30390.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Masami Hiramatsu 2009-11-20 12:13:14 -05:00 committed by H. Peter Anvin
parent 80509e27e4
commit 6f5f67267d
2 changed files with 27 additions and 1 deletions
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5
arch/x86/tools/Makefile
View file

@ -12,8 +12,11 @@ else
posttest_64bit = -n
endif
distill_awk = $(srctree)/arch/x86/tools/distill.awk
chkobjdump = $(srctree)/arch/x86/tools/chkobjdump.awk
quiet_cmd_posttest = TEST $@
cmd_posttest = $(OBJDUMP) -d -j .text $(objtree)/vmlinux | $(AWK) -f $(srctree)/arch/x86/tools/distill.awk | $(obj)/test_get_len $(posttest_64bit) $(posttest_verbose)
cmd_posttest = ($(OBJDUMP) -v | $(AWK) -f $(chkobjdump)) || $(OBJDUMP) -d -j .text $(objtree)/vmlinux | $(AWK) -f $(distill_awk) | $(obj)/test_get_len $(posttest_64bit) $(posttest_verbose)
posttest: $(obj)/test_get_len vmlinux
$(call cmd,posttest)

23
arch/x86/tools/chkobjdump.awk Normal file
View file

@ -0,0 +1,23 @@
# GNU objdump version checker
#
# Usage:
# objdump -v | awk -f chkobjdump.awk
BEGIN {
# objdump version 2.19 or later is OK for the test.
od_ver = 2;
od_sver = 19;
}
/^GNU/ {
split($4, ver, ".");
if (ver[1] > od_ver ||
(ver[1] == od_ver && ver[2] >= od_sver)) {
exit 1;
} else {
printf("Warning: objdump version %s is older than %d.%d\n",
$4, od_ver, od_sver);
print("Warning: Skipping posttest.");
# Logic is inverted, because we just skip test without error.
exit 0;
}
}