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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/alpha/lib/dbg_stackcheck.S
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/alpha/lib/dbg_stackcheck.S')
-rw-r--r--arch/alpha/lib/dbg_stackcheck.S28
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/alpha/lib/dbg_stackcheck.S b/arch/alpha/lib/dbg_stackcheck.S
new file mode 100644
index 000000000..b3b6fc94f
--- /dev/null
+++ b/arch/alpha/lib/dbg_stackcheck.S
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * arch/alpha/lib/dbg_stackcheck.S
+ * Contributed by Richard Henderson (rth@tamu.edu)
+ *
+ * Verify that we have not overflowed the stack. Oops if we have.
+ */
+
+#include <asm/asm-offsets.h>
+
+ .text
+ .set noat
+
+ .align 3
+ .globl _mcount
+ .ent _mcount
+_mcount:
+ .frame $30, 0, $28, 0
+ .prologue 0
+
+ lda $0, TASK_SIZE($8)
+ cmpult $30, $0, $0
+ bne $0, 1f
+ ret ($28)
+1: stq $31, -8($31) # oops me, damn it.
+ br 1b
+
+ .end _mcount