linux/scripts/checkstack.pl

2 # SPDX-License-Identifier: GPL-2.0
9 #	s390 port and big speedup by Arnd Bergmann <arnd@bergmann-dalldorf.de>
21 #	objdump -d vmlinux | scripts/checkstack.pl [arch]
44 		$arch = `uname -m`;
53 	$x	= "[0-9a-f]";	# hex character
54 	$xs	= "[0-9a-f ]";	# hex character or space
57 		#ffffffc0006325cc:       a9bb7bfd        stp     x29, x30, [sp, #-80]!
58 		#a110:       d11643ff        sub     sp, sp, #0x590
59 		$re = qr/^.*stp.*sp, \#-([0-9]{1,8})\]\!/o;
60 		$dre = qr/^.*sub.*sp, sp, #(0x$x{1,8})/o;
62 		#c0008ffc:	e24dd064	sub	sp, sp, #100	; 0x64
63 		$re = qr/.*sub.*sp, sp, #([0-9]{1,4})/o;
66 		#c0105234:       81 ec ac 05 00 00       sub    $0x5ac,%esp
68 		#    2f60:    48 81 ec e8 05 00 00       sub    $0x5e8,%rsp
69 		$re = qr/^.*[as][du][db]    \$(0x$x{1,8}),\%(e|r)sp$/o;
72 		#e0000000044011fc:       01 0f fc 8c     adds r12=-384,r12
73 		$re = qr/.*adds.*r12=-(([0-9]{2}|[3-9])[0-9]{2}),r12/o;
75 		#    2b6c:       4e56 fb70       linkw %fp,#-1168
76 		#  1df770:       defc ffe4       addaw #-28,%sp
77 		$re = qr/.*(?:linkw %fp,|addaw )#-([0-9]{1,4})(?:,%sp)?$/o;
79 		#8800402c:       67bdfff0        daddiu  sp,sp,-16
80 		$re = qr/.*daddiu.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o;
82 		#88003254:       27bdffe0        addiu   sp,sp,-32
83 		$re = qr/.*addiu.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o;
85 		#25a8:	defffb04 	addi	sp,sp,-20
86 		$re = qr/.*addi.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o;
88 		# c000043c:       9c 21 fe f0     l.addi r1,r1,-272
89 		$re = qr/.*l\.addi.*r1,r1,-(([0-9]{2}|[3-9])[0-9]{2})/o;
93 		# powerpc    : 94 21 ff 30     stwu    r1,-208(r1)
94 		# ppc64(le)  : 81 ff 21 f8     stdu    r1,-128(r1)
95 		$re = qr/.*st[dw]u.*r1,-($x{1,8})\(r1\)/o;
97 		#   11160:       a7 fb ff 60             aghi   %r15,-160
99 		#  100092:	 e3 f0 ff c8 ff 71	 lay	 %r15,-56(%r15)
100 		$re = qr/.*(?:lay|ag?hi).*\%r15,-([0-9]+)(?:\(\%r15\))?$/o;
102 		# f0019d10:       9d e3 bf 90     save  %sp, -112, %sp
103 		$re = qr/.*save.*%sp, -(([0-9]{2}|[3-9])[0-9]{2}), %sp/o;
105 		#ffffffff8036e868:	c2010113          	addi	sp,sp,-992
106 		$re = qr/.*addi.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o;
120 	my $size = 0;
136 $total_size = 0;
145 		$addr = "0x$1";
147 		my $padlen = 56 - length($intro);
148 		while ($padlen > 0) {
150 			$padlen -= 8;
153 		$total_size = 0;
159 		if ($lastslash != -1) {
165 		$size = hex($size) if ($size =~ /^0x/);
167 		if ($size > 0xf0000000) {
168 			$size = - $size;
169 			$size += 0x80000000;
170 			$size += 0x80000000;
172 		next if ($size > 0x10000000);
179 		$size = hex($size) if ($size =~ /^0x/);
193 print sort { ($b =~ /:\t*(\d+)$/)[0] <=> ($a =~ /:\t*(\d+)$/)[0] } @stack;