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Call into kdb on a data abort when it's enabled. This is needed to

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correctly handle trying to access an invalid address in the debugger.

While here document that the breakpoint handler is supposed to fall
through to the following case.

Sponsored by:	ABT Systems Ltd
This commit is contained in:
Andrew Turner 2015-08-25 16:49:10 +00:00
parent 65780a4020
commit 8f7467734a
1 changed files with 13 additions and 0 deletions
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13
sys/arm64/arm64/trap.c
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@ -155,6 +155,13 @@ data_abort(struct trapframe *frame, uint64_t esr, int lower)
uint64_t far;
int error, sig, ucode;
#ifdef KDB
if (kdb_active) {
kdb_reenter();
return;
}
#endif
td = curthread;
pcb = td->td_pcb;
@ -221,6 +228,11 @@ data_abort(struct trapframe *frame, uint64_t esr, int lower)
frame->tf_elr = pcb->pcb_onfault;
return;
}
#ifdef KDB
if (debugger_on_panic || kdb_active)
if (kdb_trap(ESR_ELx_EXCEPTION(esr), 0, frame))
return;
#endif
panic("vm_fault failed: %lx", frame->tf_elr);
}
}
@ -293,6 +305,7 @@ do_el1h_sync(struct trapframe *frame)
break;
}
#endif
/* FALLTHROUGH */
case EXCP_WATCHPT_EL1:
case EXCP_SOFTSTP_EL1:
#ifdef KDB