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Triggers with type=0 aren't real. (#496)

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Fixes #491.

Change-Id: Id01adcc68d8c7d95f7e86d49d5d2b0c97c9fb1b0
This commit is contained in:
Tim Newsome
2020-07-07 11:55:57 -07:00
committed by GitHub
parent bbfc666eba
commit 8b929c6497
1 changed files with 5 additions and 1 deletions
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src/target/riscv/riscv.c
+5 -1
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@@ -3339,7 +3339,9 @@ int riscv_enumerate_triggers(struct target *target)
for (unsigned t = 0; t < RISCV_MAX_TRIGGERS; ++t) {
r->trigger_count[hartid] = t;
riscv_set_register_on_hart(target, hartid, GDB_REGNO_TSELECT, t);
/* If we can't write tselect, then this hart does not support triggers. */
if (riscv_set_register_on_hart(target, hartid, GDB_REGNO_TSELECT, t) != ERROR_OK)
break;
uint64_t tselect_rb;
result = riscv_get_register_on_hart(target, &tselect_rb, hartid,
GDB_REGNO_TSELECT);
@@ -3357,6 +3359,8 @@ int riscv_enumerate_triggers(struct target *target)
return result;
int type = get_field(tdata1, MCONTROL_TYPE(riscv_xlen(target)));
if (type == 0)
break;
switch (type) {
case 1:
/* On these older cores we don't support software using