diff options
Diffstat (limited to 'tools/checkstack.pl')
| -rwxr-xr-x | tools/checkstack.pl | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/tools/checkstack.pl b/tools/checkstack.pl deleted file mode 100755 index c1cdc0a..0000000 --- a/tools/checkstack.pl +++ /dev/null @@ -1,171 +0,0 @@ -#!/usr/bin/perl - -# Check the stack usage of functions -# -# Copyright Joern Engel <joern@lazybastard.org> -# Inspired by Linus Torvalds -# Original idea maybe from Keith Owens -# s390 port and big speedup by Arnd Bergmann <arnd@bergmann-dalldorf.de> -# Mips port by Juan Quintela <quintela@mandrakesoft.com> -# IA64 port via Andreas Dilger -# Arm port by Holger Schurig -# sh64 port by Paul Mundt -# Random bits by Matt Mackall <mpm@selenic.com> -# M68k port by Geert Uytterhoeven and Andreas Schwab -# AVR32 port by Haavard Skinnemoen (Atmel) -# PARISC port by Kyle McMartin <kyle@parisc-linux.org> -# sparc port by Martin Habets <errandir_news@mph.eclipse.co.uk> -# -# Usage: -# objdump -d vmlinux | scripts/checkstack.pl [arch] -# -# TODO : Port to all architectures (one regex per arch) - -use strict; - -# check for arch -# -# $re is used for two matches: -# $& (whole re) matches the complete objdump line with the stack growth -# $1 (first bracket) matches the size of the stack growth -# -# $dre is similar, but for dynamic stack redutions: -# $& (whole re) matches the complete objdump line with the stack growth -# $1 (first bracket) matches the dynamic amount of the stack growth -# -# use anything else and feel the pain ;) -my (@stack, $re, $dre, $x, $xs); -{ - my $arch = shift; - if ($arch eq "") { - $arch = `uname -m`; - chomp($arch); - } - - $x = "[0-9a-f]"; # hex character - $xs = "[0-9a-f ]"; # hex character or space - if ($arch eq 'arm') { - #c0008ffc: e24dd064 sub sp, sp, #100 ; 0x64 - $re = qr/.*sub.*sp, sp, #(([0-9]{2}|[3-9])[0-9]{2})/o; - } elsif ($arch eq 'avr32') { - #8000008a: 20 1d sub sp,4 - #80000ca8: fa cd 05 b0 sub sp,sp,1456 - $re = qr/^.*sub.*sp.*,([0-9]{1,8})/o; - } elsif ($arch =~ /^i[3456]86$/) { - #c0105234: 81 ec ac 05 00 00 sub $0x5ac,%esp - $re = qr/^.*[as][du][db] \$(0x$x{1,8}),\%esp$/o; - $dre = qr/^.*[as][du][db] (%.*),\%esp$/o; - } elsif ($arch eq 'x86_64') { - # 2f60: 48 81 ec e8 05 00 00 sub $0x5e8,%rsp - $re = qr/^.*[as][du][db] \$(0x$x{1,8}),\%rsp$/o; - $dre = qr/^.*[as][du][db] (\%.*),\%rsp$/o; - } elsif ($arch eq 'ia64') { - #e0000000044011fc: 01 0f fc 8c adds r12=-384,r12 - $re = qr/.*adds.*r12=-(([0-9]{2}|[3-9])[0-9]{2}),r12/o; - } elsif ($arch eq 'm68k') { - # 2b6c: 4e56 fb70 linkw %fp,#-1168 - # 1df770: defc ffe4 addaw #-28,%sp - $re = qr/.*(?:linkw %fp,|addaw )#-([0-9]{1,4})(?:,%sp)?$/o; - } elsif ($arch eq 'mips64') { - #8800402c: 67bdfff0 daddiu sp,sp,-16 - $re = qr/.*daddiu.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o; - } elsif ($arch eq 'mips') { - #88003254: 27bdffe0 addiu sp,sp,-32 - $re = qr/.*addiu.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o; - } elsif ($arch eq 'parisc' || $arch eq 'parisc64') { - $re = qr/.*ldo ($x{1,8})\(sp\),sp/o; - } elsif ($arch eq 'ppc') { - #c00029f4: 94 21 ff 30 stwu r1,-208(r1) - $re = qr/.*stwu.*r1,-($x{1,8})\(r1\)/o; - } elsif ($arch eq 'ppc64') { - #XXX - $re = qr/.*stdu.*r1,-($x{1,8})\(r1\)/o; - } elsif ($arch eq 'powerpc') { - $re = qr/.*st[dw]u.*r1,-($x{1,8})\(r1\)/o; - } elsif ($arch =~ /^s390x?$/) { - # 11160: a7 fb ff 60 aghi %r15,-160 - # or - # 100092: e3 f0 ff c8 ff 71 lay %r15,-56(%r15) - $re = qr/.*(?:lay|ag?hi).*\%r15,-(([0-9]{2}|[3-9])[0-9]{2}) - (?:\(\%r15\))?$/ox; - } elsif ($arch =~ /^sh64$/) { - #XXX: we only check for the immediate case presently, - # though we will want to check for the movi/sub - # pair for larger users. -- PFM. - #a00048e0: d4fc40f0 addi.l r15,-240,r15 - $re = qr/.*addi\.l.*r15,-(([0-9]{2}|[3-9])[0-9]{2}),r15/o; - } elsif ($arch =~ /^blackfin$/) { - # 0: 00 e8 38 01 LINK 0x4e0; - $re = qr/.*[[:space:]]LINK[[:space:]]*(0x$x{1,8})/o; - } elsif ($arch eq 'sparc' || $arch eq 'sparc64') { - # f0019d10: 9d e3 bf 90 save %sp, -112, %sp - $re = qr/.*save.*%sp, -(([0-9]{2}|[3-9])[0-9]{2}), %sp/o; - } else { - print("wrong or unknown architecture \"$arch\"\n"); - exit - } -} - -# -# main() -# -my $funcre = qr/^$x* <(.*)>:$/; -my ($func, $file, $lastslash); - -while (my $line = <STDIN>) { - if ($line =~ m/$funcre/) { - $func = $1; - } - elsif ($line =~ m/(.*):\s*file format/) { - $file = $1; - $file =~ s/\.ko//; - $lastslash = rindex($file, "/"); - if ($lastslash != -1) { - $file = substr($file, $lastslash + 1); - } - } - elsif ($line =~ m/$re/) { - my $size = $1; - $size = hex($size) if ($size =~ /^0x/); - - if ($size > 0xf0000000) { - $size = - $size; - $size += 0x80000000; - $size += 0x80000000; - } - next if ($size > 0x10000000); - - next if $line !~ m/^($xs*)/; - my $addr = $1; - $addr =~ s/ /0/g; - $addr = "0x$addr"; - - my $intro = "$addr $func [$file]:"; - my $padlen = 56 - length($intro); - while ($padlen > 0) { - $intro .= ' '; - $padlen -= 8; - } - next if ($size < 100); - push @stack, "$intro$size\n"; - } - elsif (defined $dre && $line =~ m/$dre/) { - my $size = "Dynamic ($1)"; - - next if $line !~ m/^($xs*)/; - my $addr = $1; - $addr =~ s/ /0/g; - $addr = "0x$addr"; - - my $intro = "$addr $func [$file]:"; - my $padlen = 56 - length($intro); - while ($padlen > 0) { - $intro .= ' '; - $padlen -= 8; - } - push @stack, "$intro$size\n"; - } -} - -# Sort output by size (last field) -print sort { ($b =~ /:\t*(\d+)$/)[0] <=> ($a =~ /:\t*(\d+)$/)[0] } @stack; |