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powerpc: Test prefixed code patching

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Expand the code-patching self-tests to includes tests for patching
prefixed instructions.

Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
[mpe: Use CONFIG_PPC64 not __powerpc64__]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200506034050.24806-25-jniethe5@gmail.com
This commit is contained in:
Jordan Niethe 2020-05-06 13:40:44 +10:00 • committed by Michael Ellerman
parent 650b55b707
commit f77f8ff7f1
3 changed files with 42 additions and 1 deletions
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20
arch/powerpc/lib/test_code-patching.S Normal file
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@ -0,0 +1,20 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020 IBM Corporation
*/
#include <asm/ppc-opcode.h>
.text
#define globl(x) \
.globl x; \
x:
globl(code_patching_test1)
nop
nop
globl(end_code_patching_test1)
globl(code_patching_test1_expected)
.long OP_PREFIX << 26
.long 0x0000000