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ftrace: scripts/recordmcount.pl support for ARM

Impact: extend scripts/recordmcount.pl to ARM Arm uses %progbits instead of @progbits and requires only 4 byte alignment. [ Thanks to Sam Ravnborg for mentioning that ARM uses %progbits ]

Jim Radford committed 17 years ago

Commit e58918a1 parent 3a3d04a1 file · +7 −1Browse files

Showing the changes to scripts (1 of 1 file). Show all

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scripts/recordmcount.pl+7−1
@@ -136,6 +136,7 @@ my $function_regex; # Find the name of a function · 135 unmodified lines
136 # (return offset and func name)136 # (return offset and func name)
137my $mcount_regex; # Find the call site to mcount (return offset)137my $mcount_regex; # Find the call site to mcount (return offset)
138my $alignment; # The .align value to use for $mcount_section138my $alignment; # The .align value to use for $mcount_section
139my $section_type; # Section header plus possible alignment command
139 140
140if ($arch eq "x86") {141if ($arch eq "x86") {
141 if ($bits == 64) {142 if ($bits == 64) {
@@ -153,6 +154,7 @@ $nm_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\S+)"; · 11 unmodified lines
153$section_regex = "Disassembly of section\\s+(\\S+):";154$section_regex = "Disassembly of section\\s+(\\S+):";
154$function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:";155$function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:";
155$mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount\$";156$mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\smcount\$";
157$section_type = '@progbits';
156$type = ".long";158$type = ".long";
157 159
158if ($arch eq "x86_64") {160if ($arch eq "x86_64") {
@@ -192,6 +194,10 @@ if ($arch eq "x86_64") { · 33 unmodified lines
192 $type = ".quad";194 $type = ".quad";
193 }195 }
194 196
197} elsif ($arch eq "arm") {
198 $alignment = 2;
199 $section_type = '%progbits';
200
195} else {201} else {
196 die "Arch $arch is not supported with CONFIG_FTRACE_MCOUNT_RECORD";202 die "Arch $arch is not supported with CONFIG_FTRACE_MCOUNT_RECORD";
197}203}
@@ -312,7 +318,7 @@ sub update_funcs · 114 unmodified lines
312 if (!$opened) {318 if (!$opened) {
313 open(FILE, ">$mcount_s") || die "can't create $mcount_s\n";319 open(FILE, ">$mcount_s") || die "can't create $mcount_s\n";
314 $opened = 1;320 $opened = 1;
315 print FILE "\t.section $mcount_section,\"a\",\@progbits\n";321 print FILE "\t.section $mcount_section,\"a\",$section_type\n";
316 print FILE "\t.align $alignment\n" if (defined($alignment));322 print FILE "\t.align $alignment\n" if (defined($alignment));
317 }323 }
318 printf FILE "\t%s %s + %d\n", $type, $ref_func, $offsets[$i] - $offset;324 printf FILE "\t%s %s + %d\n", $type, $ref_func, $offsets[$i] - $offset;