| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* |
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| 3 | * arch/alpha/lib/dbg_stackcheck.S |
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| 4 | * Contributed by Richard Henderson (rth@tamu.edu) |
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| 5 | * |
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| 6 | * Verify that we have not overflowed the stack. Oops if we have. |
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| 7 | */ |
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| 8 | |
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| 9 | #include <asm/asm-offsets.h> |
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| 10 | |
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| 11 | .text |
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| 12 | .set noat |
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| 13 | |
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| 14 | .align 3 |
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| 15 | .globl _mcount |
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| 16 | .ent _mcount |
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| 17 | _mcount: |
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| 18 | .frame $30, 0, $28, 0 |
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| 19 | .prologue 0 |
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| 20 | |
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| 21 | lda $0, TASK_SIZE($8) |
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| 22 | cmpult $30, $0, $0 |
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| 23 | bne $0, 1f |
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| 24 | ret ($28) |
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| 25 | 1: stq $31, -8($31) # oops me, damn it. |
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| 26 | br 1b |
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| 27 | |
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| 28 | .end _mcount |
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| 29 | |
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