Differential D27766 Diff 82069 sys/cddl/dev/fbt/aarch64/fbt_isa.c

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Show First 20 Lines • Show All 90 Lines • ▼ Show 20 Lines	fbt_provide_module_function(linker_file_t lf, int symindx,

modname = opaque;		modname = opaque;
name = symval->name;		name = symval->name;

/* Check if function is excluded from instrumentation */		/* Check if function is excluded from instrumentation */
if (fbt_excluded(name))		if (fbt_excluded(name))
return (0);		return (0);

		/*
		* Instrumenting certain exception handling functions can lead to FBT
		* recursion, so exclude from instrumentation.
		*/
		if (strcmp(name, "handle_el1h_sync") == 0 \|\|
		strcmp(name, "do_el1h_sync") == 0)
		return (1);

instr = (uint32_t *)(symval->value);		instr = (uint32_t *)(symval->value);
limit = (uint32_t *)(symval->value + symval->size);		limit = (uint32_t *)(symval->value + symval->size);

/* Look for stp (pre-indexed) operation */		/* Look for stp (pre-indexed) operation */
for (; instr < limit; instr++) {		for (; instr < limit; instr++) {
if ((*instr & LDP_STP_MASK) == STP_64)		if ((*instr & LDP_STP_MASK) == STP_64)
break;		break;
}		}
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