#!/usr/bin/perl # Check the stack usage of functions # # Copyright Joern Engel # Inspired by Linus Torvalds # Original idea maybe from Keith Owens # s390 port and big speedup by Arnd Bergmann # Mips port by Juan Quintela # IA64 port via Andreas Dilger # Arm port by Holger Schurig # sh64 port by Paul Mundt # Random bits by Matt Mackall # M68k port by Geert Uytterhoeven and Andreas Schwab # AVR32 port by Haavard Skinnemoen (Atmel) # AArch64, PARISC ports by Kyle McMartin # sparc port by Martin Habets # # 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, $funcre); { 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 $funcre = qr/^$x* <(.*)>:$/; if ($arch eq 'aarch64') { #ffffffc0006325cc: a9bb7bfd stp x29, x30, [sp,#-80]! $re = qr/^.*stp.*sp,\#-([0-9]{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 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 =~ /^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 '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 'metag') { #400026fc: 40 00 00 82 ADD A0StP,A0StP,#0x8 $re = qr/.*ADD.*A0StP,A0StP,\#(0x$x{1,8})/o; $funcre = qr/^$x* <[^\$](.*)>:$/; } elsif ($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 ($func, $file, $lastslash); while (my $line = ) { if ($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; x-5.9.y Hosts the 0x221E linux distro kernel.Ubuntu
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path: root/include/linux/cdx/mcdi.h
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2025-09-15cdx: Export Symbols for MCDI RPC and InitializationShubhrajyoti Datta
The cdx_mcdi_init(), cdx_mcdi_process_cmd(), and cdx_mcdi_rpc() functions are needed by the VersalNET EDAC module that interact with the MCDI (Management Controller Direct Interface) framework. These functions facilitate communication between different hardware components by enabling command execution and status management. Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Acked-by: Nikhil Agarwal <nikhil.agarwal@amd.com> Link: https://lore.kernel.org/20250908115649.22903-1-shubhrajyoti.datta@amd.com
2025-09-15cdx: Split mcdi.h and reorganize headersShubhrajyoti Datta
Move bitfield.h from the CDX controller directory to include/linux/cdx to make them accessible to other drivers. As part of this refactoring, split mcdi.h into two headers: - mcdi.h: retains interface-level declarations - mcdid.h: contains internal definitions and macros This is in preparation for VersalNET EDAC driver that relies on it. Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Acked-by: Nikhil Agarwal <nikhil.agarwal@amd.com> Link: https://lore.kernel.org/20250908115649.22903-1-shubhrajyoti.datta@amd.com