58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
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/*
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* Test modifying an EXECUTE target.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include <assert.h>
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#include <stdlib.h>
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/* Make sure we exercise the same EXECUTE instruction. */
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extern void execute(unsigned char *insn, unsigned char mask,
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unsigned long *r1_r5);
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asm(".globl execute\n"
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"execute:\n"
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"lg %r1,0(%r4)\n"
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"lg %r5,8(%r4)\n"
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"ex %r3,0(%r2)\n"
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"stg %r5,8(%r4)\n"
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"stg %r1,0(%r4)\n"
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"br %r14\n");
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/* Define an RWX EXECUTE target. */
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extern unsigned char lgfi[];
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asm(".pushsection .rwx,\"awx\",@progbits\n"
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".globl lgfi\n"
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"lgfi: lgfi %r0,0\n"
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".popsection\n");
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int main(void)
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{
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unsigned long r1_r5[2];
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/* Create an initial TB. */
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r1_r5[0] = -1;
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r1_r5[1] = -1;
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execute(lgfi, 1 << 4, r1_r5);
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assert(r1_r5[0] == 0);
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assert(r1_r5[1] == -1);
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/* Test changing the mask. */
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execute(lgfi, 5 << 4, r1_r5);
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assert(r1_r5[0] == 0);
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assert(r1_r5[1] == 0);
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/* Test changing the target. */
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lgfi[5] = 42;
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execute(lgfi, 5 << 4, r1_r5);
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assert(r1_r5[0] == 0);
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assert(r1_r5[1] == 42);
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/* Test changing both the mask and the target. */
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lgfi[5] = 24;
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execute(lgfi, 1 << 4, r1_r5);
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assert(r1_r5[0] == 24);
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assert(r1_r5[1] == 42);
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return EXIT_SUCCESS;
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}
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