fbt/riscv/fbt_isa.c

41 #include "fbt.h"
51 	fbt_probe_t *fbt;
54 	fbt = fbt_probetab[FBT_ADDR2NDX(addr)];
56 	for (; fbt != NULL; fbt = fbt->fbtp_hashnext) {
57 		if ((uintptr_t)fbt->fbtp_patchpoint == addr) {
60 			dtrace_probe(fbt->fbtp_id, frame->tf_a[0],
65 			return (fbt->fbtp_savedval);
73 fbt_patch_tracepoint(fbt_probe_t *fbt, fbt_patchval_t val)
76 	*fbt->fbtp_patchpoint = val;
77 	cpu_icache_sync_range((vm_offset_t)fbt->fbtp_patchpoint, 4);
84 	fbt_probe_t *fbt, *retfbt;
110 	fbt = malloc(sizeof (fbt_probe_t), M_FBT, M_WAITOK | M_ZERO);
111 	fbt->fbtp_name = name;
112 	fbt->fbtp_id = dtrace_probe_create(fbt_id, modname,
113 	    name, FBT_ENTRY, 3, fbt);
114 	fbt->fbtp_patchpoint = instr;
115 	fbt->fbtp_ctl = lf;
116 	fbt->fbtp_loadcnt = lf->loadcnt;
117 	fbt->fbtp_savedval = *instr;
118 	fbt->fbtp_patchval = FBT_PATCHVAL;
119 	fbt->fbtp_rval = DTRACE_INVOP_SD;
120 	fbt->fbtp_symindx = symindx;
122 	fbt->fbtp_hashnext = fbt_probetab[FBT_ADDR2NDX(instr)];
123 	fbt_probetab[FBT_ADDR2NDX(instr)] = fbt;
140 	fbt = malloc(sizeof (fbt_probe_t), M_FBT, M_WAITOK | M_ZERO);
141 	fbt->fbtp_name = name;
143 		fbt->fbtp_id = dtrace_probe_create(fbt_id, modname,
144 		    name, FBT_RETURN, 3, fbt);
146 		retfbt->fbtp_next = fbt;
147 		fbt->fbtp_id = retfbt->fbtp_id;
149 	retfbt = fbt;
151 	fbt->fbtp_patchpoint = instr;
152 	fbt->fbtp_ctl = lf;
153 	fbt->fbtp_loadcnt = lf->loadcnt;
154 	fbt->fbtp_symindx = symindx;
155 	fbt->fbtp_rval = DTRACE_INVOP_RET;
156 	fbt->fbtp_savedval = *instr;
157 	fbt->fbtp_patchval = FBT_PATCHVAL;
158 	fbt->fbtp_hashnext = fbt_probetab[FBT_ADDR2NDX(instr)];
159 	fbt_probetab[FBT_ADDR2NDX(instr)] = fbt;