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| author | root <root@artemis.panaceas.org> | 2015-12-25 04:40:36 +0000 |
|---|---|---|
| committer | root <root@artemis.panaceas.org> | 2015-12-25 04:40:36 +0000 |
| commit | 849369d6c66d3054688672f97d31fceb8e8230fb (patch) | |
| tree | 6135abc790ca67dedbe07c39806591e70eda81ce /arch/alpha/lib/dbg_stackcheck.S | |
| download | linux-3.0.35-kobo-849369d6c66d3054688672f97d31fceb8e8230fb.tar.gz linux-3.0.35-kobo-849369d6c66d3054688672f97d31fceb8e8230fb.tar.bz2 linux-3.0.35-kobo-849369d6c66d3054688672f97d31fceb8e8230fb.zip | |
initial_commit
Diffstat (limited to 'arch/alpha/lib/dbg_stackcheck.S')
| -rw-r--r-- | arch/alpha/lib/dbg_stackcheck.S | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/alpha/lib/dbg_stackcheck.S b/arch/alpha/lib/dbg_stackcheck.S new file mode 100644 index 00000000..78f6b924 --- /dev/null +++ b/arch/alpha/lib/dbg_stackcheck.S @@ -0,0 +1,27 @@ +/* + * 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 |