From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/alpha/lib/dbg_stackkill.S | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 arch/alpha/lib/dbg_stackkill.S (limited to 'arch/alpha/lib/dbg_stackkill.S') diff --git a/arch/alpha/lib/dbg_stackkill.S b/arch/alpha/lib/dbg_stackkill.S new file mode 100644 index 000000000..6d9197e52 --- /dev/null +++ b/arch/alpha/lib/dbg_stackkill.S @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * arch/alpha/lib/dbg_stackkill.S + * Contributed by Richard Henderson (rth@cygnus.com) + * + * Clobber the balance of the kernel stack, hoping to catch + * uninitialized local variables in the act. + */ + +#include + + .text + .set noat + + .align 5 + .globl _mcount + .ent _mcount +_mcount: + .frame $30, 0, $28, 0 + .prologue 0 + + ldi $0, 0xdeadbeef + lda $2, -STACK_SIZE + sll $0, 32, $1 + and $30, $2, $2 + or $0, $1, $0 + lda $2, TASK_SIZE($2) + cmpult $2, $30, $1 + beq $1, 2f +1: stq $0, 0($2) + addq $2, 8, $2 + cmpult $2, $30, $1 + bne $1, 1b +2: ret ($28) + + .end _mcount -- cgit v1.2.3