Commit 1fd49a0b authored by Wadim Mueller's avatar Wadim Mueller Committed by Masahiro Yamada
Browse files

checkstack: add riscv support for scripts/checkstack.pl 



scripts/checkstack.pl lacks support for the riscv architecture. Add
support to detect "addi sp,sp,-FRAME_SIZE" stack frame generation instruction

Signed-off-by: default avatarWadim Mueller <wafgo01@gmail.com>
Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
parent 10269fd3

scripts/checkstack.pl

+4 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#	AArch64, PARISC ports by Kyle McMartin

#	sparc port by Martin Habets <errandir_news@mph.eclipse.co.uk>

#	ppc64le port by Breno Leitao <leitao@debian.org>

#	riscv port by Wadim Mueller <wafgo01@gmail.com>

#

#	Usage:

#	objdump -d vmlinux | scripts/checkstack.pl [arch]
@@ -108,6 +109,9 @@ my (@stack, $re, $dre, $sub, $x, $xs, $funcre, $min_stack); 
	} elsif ($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;

	} elsif ($arch =~ /^riscv(64)?$/) {

		#ffffffff8036e868:	c2010113          	addi	sp,sp,-992

		$re = qr/.*addi.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o;

	} else {

		print("wrong or unknown architecture \"$arch\"\n");

		exit