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authorMike Frysinger <vapier@gentoo.org>2010-08-06 03:26:24 -0400
committerSteven Rostedt <rostedt@goodmis.org>2010-08-12 10:06:51 -0400
commit465c6cca2668a2db2a4ffce3dca5714017873f2b (patch)
treec4672b9c3c58a176462c047f47daf5e7ef8406cc /scripts
parent18fab912d4fa70133df164d2dcf3310be0c38c34 (diff)
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tracing: Extend recordmcount to better support Blackfin mcount
The mcount call on Blackfin systems includes some stack manipulation around the actual call site, so extend the build time perl script to support this. This way we can avoid doing the calculation at runtime. Signed-off-by: Mike Frysinger <vapier@gentoo.org> LKML-Reference: <1281079584-21205-1-git-send-email-vapier@gentoo.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/recordmcount.pl7
1 files changed, 6 insertions, 1 deletions
diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
index f3c9c0a90b9..2c56539e5da 100755
--- a/scripts/recordmcount.pl
+++ b/scripts/recordmcount.pl
@@ -159,6 +159,7 @@ my $section_regex; # Find the start of a section
my $function_regex; # Find the name of a function
# (return offset and func name)
my $mcount_regex; # Find the call site to mcount (return offset)
+my $mcount_adjust; # Address adjustment to mcount offset
my $alignment; # The .align value to use for $mcount_section
my $section_type; # Section header plus possible alignment command
my $can_use_local = 0; # If we can use local function references
@@ -213,6 +214,7 @@ $section_regex = "Disassembly of section\\s+(\\S+):";
$function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:";
$mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount\$";
$section_type = '@progbits';
+$mcount_adjust = 0;
$type = ".long";
if ($arch eq "x86_64") {
@@ -351,6 +353,9 @@ if ($arch eq "x86_64") {
} elsif ($arch eq "microblaze") {
# Microblaze calls '_mcount' instead of plain 'mcount'.
$mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s_mcount\$";
+} elsif ($arch eq "blackfin") {
+ $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s__mcount\$";
+ $mcount_adjust = -4;
} else {
die "Arch $arch is not supported with CONFIG_FTRACE_MCOUNT_RECORD";
}
@@ -511,7 +516,7 @@ while (<IN>) {
}
# is this a call site to mcount? If so, record it to print later
if ($text_found && /$mcount_regex/) {
- push(@offsets, hex $1);
+ push(@offsets, (hex $1) + $mcount_adjust);
}
}