f59739a66
Bernhard Reutner-Fischer
2019-01-17
Subject
checkstack: pull from upstream
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Commit Diff GitHub →
scripts/checkstack.pl+75 -32
| @@ -1,10 +1,11 @@ | |
| - | #!/usr/bin/perl |
| + | #!/usr/bin/env perl |
| + | # SPDX-License-Identifier: GPL-2.0 |
| # Stolen from Linux kernel :) | |
| # Check the stack usage of functions | |
| # | |
| - | # Copyright Joern Engel <[email protected]> |
| + | # Copyright Joern Engel <[email protected]> |
| # Inspired by Linus Torvalds | |
| # Original idea maybe from Keith Owens | |
| # s390 port and big speedup by Arnd Bergmann <[email protected]> | |
| @@ -14,41 +15,57 @@ | |
| # sh64 port by Paul Mundt | |
| # Random bits by Matt Mackall <[email protected]> | |
| # M68k port by Geert Uytterhoeven and Andreas Schwab | |
| + | # blackfin port by Alex Landau |
| + | # AArch64, PARISC ports by Kyle McMartin |
| + | # sparc port by Martin Habets <[email protected]> |
| + | # ppc64le port by Breno Leitao <[email protected]> |
| # | |
| # Usage: | |
| - | # objdump -d vmlinux | checkstack.pl [arch] |
| + | # 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 reductions: |
| + | # $& (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, $x, $xs); |
| + | my (@stack, $re, $dre, $x, $xs, $funcre); |
| { | |
| my $arch = shift; | |
| if ($arch eq "") { | |
| $arch = `uname -m`; | |
| - | 1 while chomp $arch; |
| + | chomp($arch); |
| } | |
| $x = "[0-9a-f]"; # hex character | |
| $xs = "[0-9a-f ]"; # hex character or space | |
| - | if ($arch eq 'arm') { |
| + | $funcre = qr/^$x* <(.*)>:$/; |
| + | if ($arch eq 'aarch64') { |
| + | #ffffffc0006325cc: a9bb7bfd stp x29, x30, [sp, #-80]! |
| + | #a110: d11643ff sub sp, sp, #0x590 |
| + | $re = qr/^.*stp.*sp, \#-([0-9]{1,8})\]\!/o; |
| + | $dre = qr/^.*sub.*sp, sp, #(0x$x{1,8})/o; |
| + | } elsif ($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 =~ /^x86(_64)?$/ || $arch =~ /^i[3456]86$/) { |
| + | #c0105234: 81 ec ac 05 00 00 sub $0x5ac,%esp |
| + | # or |
| + | # 2f60: 48 81 ec e8 05 00 00 sub $0x5e8,%rsp |
| + | $re = qr/^.*[as][du][db] \$(0x$x{1,8}),\%(e|r)sp$/o; |
| + | $dre = qr/^.*[as][du][db] (%.*),\%(e|r)sp$/o; |
| } elsif ($arch eq 'blackfin') { | |
| # 52: 00 e8 03 00 LINK 0xc; | |
| $re = qr/.*LINK (0x$x{1,5});$/o; | |
| - | } elsif ($arch =~ /^i[3456]86$/) { |
| - | #c0105234: 81 ec ac 05 00 00 sub $0x5ac,%esp |
| - | $re = qr/^.*[as][du][db] \$(0x$x{1,8}),\%esp$/o; |
| - | } elsif ($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$/o; |
| } elsif ($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; | |
| @@ -62,42 +79,43 @@ my (@stack, $re, $x, $xs); | |
| } elsif ($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 '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 ($arch eq 'powerpc') { |
| + | } elsif ($arch eq 'nios2') { |
| + | #25a8: defffb04 addi sp,sp,-20 |
| + | $re = qr/.*addi.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o; |
| + | } elsif ($arch eq 'openrisc') { |
| + | # c000043c: 9c 21 fe f0 l.addi r1,r1,-272 |
| + | $re = qr/.*l\.addi.*r1,r1,-(([0-9]{2}|[3-9])[0-9]{2})/o; |
| + | } elsif ($arch eq 'parisc' || $arch eq 'parisc64') { |
| + | $re = qr/.*ldo ($x{1,8})\(sp\),sp/o; |
| + | } elsif ($arch eq 'powerpc' || $arch =~ /^ppc(64)?(le)?$/ ) { |
| + | # powerpc : 94 21 ff 30 stwu r1,-208(r1) |
| + | # ppc64(le) : 81 ff 21 f8 stdu r1,-128(r1) |
| $re = qr/.*st[dw]u.*r1,-($x{1,8})\(r1\)/o; | |
| } elsif ($arch =~ /^s390x?$/) { | |
| # 11160: a7 fb ff 60 aghi %r15,-160 | |
| - | $re = qr/.*ag?hi.*\%r15,-(([0-9]{2}|[3-9])[0-9]{2})/o; |
| + | # 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 eq 'sparc' || $arch eq 'sparc64') { |
| + | # f0019d10: 9d e3 bf 90 save %sp, -112, %sp |
| + | $re = qr/.*save.*%sp, -(([0-9]{2}|[3-9])[0-9]{2}), %sp/o; |
| } else { | |
| - | print("wrong or unknown architecture\n"); |
| + | print("wrong or unknown architecture \"$arch\"\n"); |
| exit | |
| } | |
| } | |
| - | sub bysize($) { |
| - | my ($asize, $bsize); |
| - | ($asize = $a) =~ s/.*: *(.*)$/$1/; |
| - | ($bsize = $b) =~ s/.*: *(.*)$/$1/; |
| - | $bsize <=> $asize |
| - | } |
| - | |
| # | |
| # main() | |
| # | |
| - | my $funcre = qr/^$x* <(.*)>:$/; |
| - | my $func; |
| - | my $file, $lastslash; |
| + | my ($func, $file, $lastslash); |
| while (my $line = <STDIN>) { | |
| if ($line =~ m/$funcre/) { | |
| @@ -137,6 +155,31 @@ while (my $line = <STDIN>) { | |
| next if ($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"; |
| + | |
| + | #bbox: was: my $intro = "$addr $func [$file]:"; |
| + | my $intro = "$func [$file]:"; |
| + | my $padlen = 56 - length($intro); |
| + | while ($padlen > 0) { |
| + | $intro .= ' '; |
| + | $padlen -= 8; |
| + | } |
| + | push @stack, "$intro$size\n"; |
| + | } |
| + | } |
| + | |
| + | sub bysize($) { |
| + | my ($asize, $bsize); |
| + | ($asize = $a) =~ s/.*: *(.*)$/$1/; |
| + | ($bsize = $b) =~ s/.*: *(.*)$/$1/; |
| + | $bsize <=> $asize |
| } | |
| - | print sort bysize @stack; |
| + | # Sort output by size (last field) |
| + | print sort { ($b =~ /:\t*(\d+)$/)[0] <=> ($a =~ /:\t*(\d+)$/)[0] } @stack; |