fbt/aarch64/fbt_isa.c

39 #include "fbt.h"
52 	fbt_probe_t *fbt;
55 	fbt = fbt_probetab[FBT_ADDR2NDX(addr)];
57 	for (; fbt != NULL; fbt = fbt->fbtp_hashnext) {
58 		if ((uintptr_t)fbt->fbtp_patchpoint == addr) {
61 			dtrace_probe(fbt->fbtp_id, frame->tf_x[0],
66 			return (fbt->fbtp_savedval);
74 fbt_patch_tracepoint(fbt_probe_t *fbt, fbt_patchval_t val)
77 	*fbt->fbtp_patchpoint = val;
78 	cpu_icache_sync_range((vm_offset_t)fbt->fbtp_patchpoint, 4);
85 	fbt_probe_t *fbt, *retfbt;
111 	fbt = malloc(sizeof (fbt_probe_t), M_FBT, M_WAITOK | M_ZERO);
112 	fbt->fbtp_name = name;
113 	fbt->fbtp_id = dtrace_probe_create(fbt_id, modname,
114 	    name, FBT_ENTRY, 3, fbt);
115 	fbt->fbtp_patchpoint = instr;
116 	fbt->fbtp_ctl = lf;
117 	fbt->fbtp_loadcnt = lf->loadcnt;
118 	fbt->fbtp_savedval = *instr;
119 	fbt->fbtp_patchval = FBT_PATCHVAL;
120 	fbt->fbtp_rval = DTRACE_INVOP_PUSHM;
121 	fbt->fbtp_symindx = symindx;
123 	fbt->fbtp_hashnext = fbt_probetab[FBT_ADDR2NDX(instr)];
124 	fbt_probetab[FBT_ADDR2NDX(instr)] = fbt;
149 	fbt = malloc(sizeof (fbt_probe_t), M_FBT, M_WAITOK | M_ZERO);
150 	fbt->fbtp_name = name;
152 		fbt->fbtp_id = dtrace_probe_create(fbt_id, modname,
153 		    name, FBT_RETURN, 3, fbt);
155 		retfbt->fbtp_next = fbt;
156 		fbt->fbtp_id = retfbt->fbtp_id;
158 	retfbt = fbt;
160 	fbt->fbtp_patchpoint = instr;
161 	fbt->fbtp_ctl = lf;
162 	fbt->fbtp_loadcnt = lf->loadcnt;
163 	fbt->fbtp_symindx = symindx;
165 		fbt->fbtp_rval = DTRACE_INVOP_B;
167 		fbt->fbtp_rval = DTRACE_INVOP_RET;
168 	fbt->fbtp_savedval = *instr;
169 	fbt->fbtp_patchval = FBT_PATCHVAL;
170 	fbt->fbtp_hashnext = fbt_probetab[FBT_ADDR2NDX(instr)];
171 	fbt_probetab[FBT_ADDR2NDX(instr)] = fbt;