diff options
Diffstat (limited to 'scripts/recordmcount.pl')
| -rwxr-xr-x | scripts/recordmcount.pl | 48 |
1 files changed, 26 insertions, 22 deletions
diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl index ea6f6e3adaea..1d7963f4ee79 100755 --- a/scripts/recordmcount.pl +++ b/scripts/recordmcount.pl @@ -136,13 +136,14 @@ my %text_sections = ( ".text.unlikely" => 1, ); -$objdump = "objdump" if ((length $objdump) == 0); -$objcopy = "objcopy" if ((length $objcopy) == 0); -$cc = "gcc" if ((length $cc) == 0); -$ld = "ld" if ((length $ld) == 0); -$nm = "nm" if ((length $nm) == 0); -$rm = "rm" if ((length $rm) == 0); -$mv = "mv" if ((length $mv) == 0); +# Note: we are nice to C-programmers here, thus we skip the '||='-idiom. +$objdump = 'objdump' if (!$objdump); +$objcopy = 'objcopy' if (!$objcopy); +$cc = 'gcc' if (!$cc); +$ld = 'ld' if (!$ld); +$nm = 'nm' if (!$nm); +$rm = 'rm' if (!$rm); +$mv = 'mv' if (!$mv); #print STDERR "running: $P '$arch' '$objdump' '$objcopy' '$cc' '$ld' " . # "'$nm' '$rm' '$mv' '$inputfile'\n"; @@ -158,6 +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 @@ -212,6 +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") { @@ -267,6 +270,8 @@ if ($arch eq "x86_64") { } elsif ($arch eq "arm") { $alignment = 2; $section_type = '%progbits'; + $mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*R_ARM_(CALL|PC24|THM_CALL)" . + "\\s+(__gnu_mcount_nc|mcount)\$"; } elsif ($arch eq "ia64") { $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s_mcount\$"; @@ -325,7 +330,7 @@ if ($arch eq "x86_64") { # 14: R_MIPS_NONE *ABS* # 18: 00020021 nop if ($is_module eq "0") { - $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s_mcount\$"; + $mcount_regex = "^\\s*([0-9a-fA-F]+): R_MIPS_26\\s+_mcount\$"; } else { $mcount_regex = "^\\s*([0-9a-fA-F]+): R_MIPS_HI16\\s+_mcount\$"; } @@ -350,6 +355,9 @@ if ($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"; } @@ -432,14 +440,14 @@ sub update_funcs # Loop through all the mcount caller offsets and print a reference # to the caller based from the ref_func. - for (my $i=0; $i <= $#offsets; $i++) { - if (!$opened) { - open(FILE, ">$mcount_s") || die "can't create $mcount_s\n"; - $opened = 1; - print FILE "\t.section $mcount_section,\"a\",$section_type\n"; - print FILE "\t.align $alignment\n" if (defined($alignment)); - } - printf FILE "\t%s %s + %d\n", $type, $ref_func, $offsets[$i] - $offset; + if (!$opened) { + open(FILE, ">$mcount_s") || die "can't create $mcount_s\n"; + $opened = 1; + print FILE "\t.section $mcount_section,\"a\",$section_type\n"; + print FILE "\t.align $alignment\n" if (defined($alignment)); + } + foreach my $cur_offset (@offsets) { + printf FILE "\t%s %s + %d\n", $type, $ref_func, $cur_offset - $offset; } } @@ -476,11 +484,7 @@ while (<IN>) { $read_headers = 0; # Only record text sections that we know are safe - if (defined($text_sections{$1})) { - $read_function = 1; - } else { - $read_function = 0; - } + $read_function = defined($text_sections{$1}); # print out any recorded offsets update_funcs(); @@ -514,7 +518,7 @@ while (<IN>) { } # is this a call site to mcount? If so, record it to print later if ($text_found && /$mcount_regex/) { - $offsets[$#offsets + 1] = hex $1; + push(@offsets, (hex $1) + $mcount_adjust); } } |