scripts/checkstack.pl: update to get AArch64 port from Linux

Bring checkstack.pl up to date from its upstream Linux development.
Effectively, the following linux commits:

208ad00 checkstack.pl: port to AArch64
fda9f99 scripts/checkstack.pl: automatically handle 32-bit and 64-bit mode for ARCH=x86
7eb6e34 kbuild: trivial - remove trailing empty lines
690998b scripts/checkstack.pl: Add metag support

Reported-by: York Sun <yorksun@freescale.com>
Cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

diff --git a/scripts/checkstack.pl b/scripts/checkstack.pl
index c1cdc0a92ad85ada9ac91cc72f551f793ba3d343..dd8397894d5c7792431a3d1933f0e560d685489c 100755 (executable)
--- a/scripts/checkstack.pl
+++ b/scripts/checkstack.pl
@@ -13,7 +13,7 @@
 #      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>
+#      AArch64, PARISC ports by Kyle McMartin
 #      sparc port by Martin Habets <errandir_news@mph.eclipse.co.uk>
 #
 #      Usage:
@@ -34,7 +34,7 @@ use strict;
 # $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 (@stack, $re, $dre, $x, $xs, $funcre);
 {
        my $arch = shift;
        if ($arch eq "") {
@@ -44,21 +44,23 @@ my (@stack, $re, $dre, $x, $xs);
 
        $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]!
+               $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 =~ /^i[3456]86$/) {
+       } elsif ($arch =~ /^x86(_64)?$/ || $arch =~ /^i[3456]86$/) {
                #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;
+               # 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;
@@ -66,6 +68,10 @@ my (@stack, $re, $dre, $x, $xs);
                #    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;
@@ -109,7 +115,6 @@ my (@stack, $re, $dre, $x, $xs);
 #
 # main()
 #
-my $funcre = qr/^$x* <(.*)>:$/;
 my ($func, $file, $lastslash);
 
 while (my $line = <STDIN>) {