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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/alpha/lib/dbg_stackkill.S
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/alpha/lib/dbg_stackkill.S')
-rw-r--r--arch/alpha/lib/dbg_stackkill.S35
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/alpha/lib/dbg_stackkill.S b/arch/alpha/lib/dbg_stackkill.S
new file mode 100644
index 000000000000..e09f2ae1e09e
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+++ b/arch/alpha/lib/dbg_stackkill.S
@@ -0,0 +1,35 @@
1/*
2 * arch/alpha/lib/killstack.S
3 * Contributed by Richard Henderson (rth@cygnus.com)
4 *
5 * Clobber the balance of the kernel stack, hoping to catch
6 * uninitialized local variables in the act.
7 */
8
9#include <asm/asm_offsets.h>
10
11 .text
12 .set noat
13
14 .align 5
15 .globl _mcount
16 .ent _mcount
17_mcount:
18 .frame $30, 0, $28, 0
19 .prologue 0
20
21 ldi $0, 0xdeadbeef
22 lda $2, -STACK_SIZE
23 sll $0, 32, $1
24 and $30, $2, $2
25 or $0, $1, $0
26 lda $2, TASK_SIZE($2)
27 cmpult $2, $30, $1
28 beq $1, 2f
291: stq $0, 0($2)
30 addq $2, 8, $2
31 cmpult $2, $30, $1
32 bne $1, 1b
332: ret ($28)
34
35 .end _mcount