d9f8dfa9ba
Implement simple detection for all kind of jumps and branches. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Andreas Krebbel <krebbel@linux.vnet.ibm.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-s390 <linux-s390@vger.kernel.org> Cc: stable@kernel.org # v4.10+ Link: http://lkml.kernel.org/r/1491465112-45819-3-git-send-email-borntraeger@de.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
31 lines
681 B
C
31 lines
681 B
C
static struct ins_ops *s390__associate_ins_ops(struct arch *arch, const char *name)
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{
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struct ins_ops *ops = NULL;
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/* catch all kind of jumps */
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if (strchr(name, 'j') ||
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!strncmp(name, "bct", 3) ||
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!strncmp(name, "br", 2))
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ops = &jump_ops;
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/* override call/returns */
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if (!strcmp(name, "bras") ||
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!strcmp(name, "brasl") ||
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!strcmp(name, "basr"))
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ops = &call_ops;
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if (!strcmp(name, "br"))
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ops = &ret_ops;
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arch__associate_ins_ops(arch, name, ops);
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return ops;
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}
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static int s390__annotate_init(struct arch *arch)
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{
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if (!arch->initialized) {
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arch->initialized = true;
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arch->associate_instruction_ops = s390__associate_ins_ops;
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}
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return 0;
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}
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