Fork of the vendor (Boundary Devices) u-boot for Reform 2, with minor tweaks. The goal is to migrate to mainstream u-boot or barebox ASAP. The main impediment so far is the 4GB RAM config.
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  1. #!/usr/bin/perl
  2. # Check the stack usage of functions
  3. #
  4. # Copyright Joern Engel <joern@lazybastard.org>
  5. # Inspired by Linus Torvalds
  6. # Original idea maybe from Keith Owens
  7. # s390 port and big speedup by Arnd Bergmann <arnd@bergmann-dalldorf.de>
  8. # Mips port by Juan Quintela <quintela@mandrakesoft.com>
  9. # IA64 port via Andreas Dilger
  10. # Arm port by Holger Schurig
  11. # sh64 port by Paul Mundt
  12. # Random bits by Matt Mackall <mpm@selenic.com>
  13. # M68k port by Geert Uytterhoeven and Andreas Schwab
  14. # AArch64, PARISC ports by Kyle McMartin
  15. # sparc port by Martin Habets <errandir_news@mph.eclipse.co.uk>
  16. #
  17. # Usage:
  18. # objdump -d vmlinux | scripts/checkstack.pl [arch]
  19. #
  20. # TODO : Port to all architectures (one regex per arch)
  21. use strict;
  22. # check for arch
  23. #
  24. # $re is used for two matches:
  25. # $& (whole re) matches the complete objdump line with the stack growth
  26. # $1 (first bracket) matches the size of the stack growth
  27. #
  28. # $dre is similar, but for dynamic stack redutions:
  29. # $& (whole re) matches the complete objdump line with the stack growth
  30. # $1 (first bracket) matches the dynamic amount of the stack growth
  31. #
  32. # use anything else and feel the pain ;)
  33. my (@stack, $re, $dre, $x, $xs, $funcre);
  34. {
  35. my $arch = shift;
  36. if ($arch eq "") {
  37. $arch = `uname -m`;
  38. chomp($arch);
  39. }
  40. $x = "[0-9a-f]"; # hex character
  41. $xs = "[0-9a-f ]"; # hex character or space
  42. $funcre = qr/^$x* <(.*)>:$/;
  43. if ($arch eq 'aarch64') {
  44. #ffffffc0006325cc: a9bb7bfd stp x29, x30, [sp,#-80]!
  45. $re = qr/^.*stp.*sp,\#-([0-9]{1,8})\]\!/o;
  46. } elsif ($arch eq 'arm') {
  47. #c0008ffc: e24dd064 sub sp, sp, #100 ; 0x64
  48. $re = qr/.*sub.*sp, sp, #(([0-9]{2}|[3-9])[0-9]{2})/o;
  49. } elsif ($arch =~ /^x86(_64)?$/ || $arch =~ /^i[3456]86$/) {
  50. #c0105234: 81 ec ac 05 00 00 sub $0x5ac,%esp
  51. # or
  52. # 2f60: 48 81 ec e8 05 00 00 sub $0x5e8,%rsp
  53. $re = qr/^.*[as][du][db] \$(0x$x{1,8}),\%(e|r)sp$/o;
  54. $dre = qr/^.*[as][du][db] (%.*),\%(e|r)sp$/o;
  55. } elsif ($arch eq 'ia64') {
  56. #e0000000044011fc: 01 0f fc 8c adds r12=-384,r12
  57. $re = qr/.*adds.*r12=-(([0-9]{2}|[3-9])[0-9]{2}),r12/o;
  58. } elsif ($arch eq 'm68k') {
  59. # 2b6c: 4e56 fb70 linkw %fp,#-1168
  60. # 1df770: defc ffe4 addaw #-28,%sp
  61. $re = qr/.*(?:linkw %fp,|addaw )#-([0-9]{1,4})(?:,%sp)?$/o;
  62. } elsif ($arch eq 'metag') {
  63. #400026fc: 40 00 00 82 ADD A0StP,A0StP,#0x8
  64. $re = qr/.*ADD.*A0StP,A0StP,\#(0x$x{1,8})/o;
  65. $funcre = qr/^$x* <[^\$](.*)>:$/;
  66. } elsif ($arch eq 'mips64') {
  67. #8800402c: 67bdfff0 daddiu sp,sp,-16
  68. $re = qr/.*daddiu.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o;
  69. } elsif ($arch eq 'mips') {
  70. #88003254: 27bdffe0 addiu sp,sp,-32
  71. $re = qr/.*addiu.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o;
  72. } elsif ($arch eq 'parisc' || $arch eq 'parisc64') {
  73. $re = qr/.*ldo ($x{1,8})\(sp\),sp/o;
  74. } elsif ($arch eq 'ppc') {
  75. #c00029f4: 94 21 ff 30 stwu r1,-208(r1)
  76. $re = qr/.*stwu.*r1,-($x{1,8})\(r1\)/o;
  77. } elsif ($arch eq 'ppc64') {
  78. #XXX
  79. $re = qr/.*stdu.*r1,-($x{1,8})\(r1\)/o;
  80. } elsif ($arch eq 'powerpc') {
  81. $re = qr/.*st[dw]u.*r1,-($x{1,8})\(r1\)/o;
  82. } elsif ($arch =~ /^s390x?$/) {
  83. # 11160: a7 fb ff 60 aghi %r15,-160
  84. # or
  85. # 100092: e3 f0 ff c8 ff 71 lay %r15,-56(%r15)
  86. $re = qr/.*(?:lay|ag?hi).*\%r15,-(([0-9]{2}|[3-9])[0-9]{2})
  87. (?:\(\%r15\))?$/ox;
  88. } elsif ($arch =~ /^sh64$/) {
  89. #XXX: we only check for the immediate case presently,
  90. # though we will want to check for the movi/sub
  91. # pair for larger users. -- PFM.
  92. #a00048e0: d4fc40f0 addi.l r15,-240,r15
  93. $re = qr/.*addi\.l.*r15,-(([0-9]{2}|[3-9])[0-9]{2}),r15/o;
  94. } elsif ($arch =~ /^blackfin$/) {
  95. # 0: 00 e8 38 01 LINK 0x4e0;
  96. $re = qr/.*[[:space:]]LINK[[:space:]]*(0x$x{1,8})/o;
  97. } elsif ($arch eq 'sparc' || $arch eq 'sparc64') {
  98. # f0019d10: 9d e3 bf 90 save %sp, -112, %sp
  99. $re = qr/.*save.*%sp, -(([0-9]{2}|[3-9])[0-9]{2}), %sp/o;
  100. } else {
  101. print("wrong or unknown architecture \"$arch\"\n");
  102. exit
  103. }
  104. }
  105. #
  106. # main()
  107. #
  108. my ($func, $file, $lastslash);
  109. while (my $line = <STDIN>) {
  110. if ($line =~ m/$funcre/) {
  111. $func = $1;
  112. }
  113. elsif ($line =~ m/(.*):\s*file format/) {
  114. $file = $1;
  115. $file =~ s/\.ko//;
  116. $lastslash = rindex($file, "/");
  117. if ($lastslash != -1) {
  118. $file = substr($file, $lastslash + 1);
  119. }
  120. }
  121. elsif ($line =~ m/$re/) {
  122. my $size = $1;
  123. $size = hex($size) if ($size =~ /^0x/);
  124. if ($size > 0xf0000000) {
  125. $size = - $size;
  126. $size += 0x80000000;
  127. $size += 0x80000000;
  128. }
  129. next if ($size > 0x10000000);
  130. next if $line !~ m/^($xs*)/;
  131. my $addr = $1;
  132. $addr =~ s/ /0/g;
  133. $addr = "0x$addr";
  134. my $intro = "$addr $func [$file]:";
  135. my $padlen = 56 - length($intro);
  136. while ($padlen > 0) {
  137. $intro .= ' ';
  138. $padlen -= 8;
  139. }
  140. next if ($size < 100);
  141. push @stack, "$intro$size\n";
  142. }
  143. elsif (defined $dre && $line =~ m/$dre/) {
  144. my $size = "Dynamic ($1)";
  145. next if $line !~ m/^($xs*)/;
  146. my $addr = $1;
  147. $addr =~ s/ /0/g;
  148. $addr = "0x$addr";
  149. my $intro = "$addr $func [$file]:";
  150. my $padlen = 56 - length($intro);
  151. while ($padlen > 0) {
  152. $intro .= ' ';
  153. $padlen -= 8;
  154. }
  155. push @stack, "$intro$size\n";
  156. }
  157. }
  158. # Sort output by size (last field)
  159. print sort { ($b =~ /:\t*(\d+)$/)[0] <=> ($a =~ /:\t*(\d+)$/)[0] } @stack;