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Refactor examine, to avoid some assertions 

Now that we're supporting non-RTOS multi-hart mode there's some more
assertions that you're running on the right hart.  Those assertions
aren't sane very early in examine, so I avoid them.
autoconf
Palmer Dabbelt 2017-06-20 17:15:56 -07:00
parent 788908fcf0
commit a277416a39
1 changed files with 16 additions and 9 deletions
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25
src/target/riscv/riscv-013.c
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@ -1123,17 +1123,23 @@ static int examine(struct target *target)
/* Before doing anything else we must first enumerate the harts. */
RISCV_INFO(r);
if (riscv_rtos_enabled(target)) {
for (int i = 0; i < RISCV_MAX_HARTS; ++i) {
riscv_set_current_hartid(target, i);
uint32_t s = dmi_read(target, DMI_DMSTATUS);
if (get_field(s, DMI_DMSTATUS_ANYNONEXISTENT))
break;
r->hart_count = i + 1;
int original_coreid = target->coreid;
for (int i = 0; i < RISCV_MAX_HARTS; ++i) {
/* Fake being a non-RTOS targeted to this core so we can see if
* it exists. This avoids the assertion in
* riscv_set_current_hartid() that ensures non-RTOS targets
* don't touch the harts they're not assigned to. */
target->coreid = i;
r->hart_count = i + 1;
riscv_set_current_hartid(target, i);
uint32_t s = dmi_read(target, DMI_DMSTATUS);
if (get_field(s, DMI_DMSTATUS_ANYNONEXISTENT)) {
r->hart_count--;
break;
}
} else {
r->hart_count = 1;
}
target->coreid = original_coreid;
LOG_DEBUG("Enumerated %d harts", r->hart_count);
@ -1233,6 +1239,7 @@ static int examine(struct target *target)
/* Resumes all the harts, so the debugger can later pause them. */
riscv_resume_all_harts(target);
target->state = TARGET_RUNNING;
target_set_examined(target);
if (target->rtos) {