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Set si_trapno to the exception code from esr.

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Reviewed by:	kib
Sponsored by:	DARPA
Differential Revision:	https://reviews.freebsd.org/D25771
This commit is contained in:
John Baldwin 2020-07-23 21:40:03 +00:00
parent e7aaabe15e
commit d7d14db9c5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=363460
1 changed files with 21 additions and 11 deletions
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32
sys/arm64/arm64/trap.c
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@ -104,7 +104,7 @@ static abort_handler *abort_handlers[] = {
};
static __inline void
call_trapsignal(struct thread *td, int sig, int code, void *addr)
call_trapsignal(struct thread *td, int sig, int code, void *addr, int trapno)
{
ksiginfo_t ksi;
@ -112,6 +112,7 @@ call_trapsignal(struct thread *td, int sig, int code, void *addr)
ksi.ksi_signo = sig;
ksi.ksi_code = code;
ksi.ksi_addr = addr;
ksi.ksi_trapno = trapno;
trapsignal(td, &ksi);
}
@ -161,7 +162,8 @@ svc_handler(struct thread *td, struct trapframe *frame)
syscallenter(td);
syscallret(td);
} else {
call_trapsignal(td, SIGILL, ILL_ILLOPN, (void *)frame->tf_elr);
call_trapsignal(td, SIGILL, ILL_ILLOPN, (void *)frame->tf_elr,
ESR_ELx_EXCEPTION(frame->tf_esr));
userret(td, frame);
}
}
@ -177,7 +179,8 @@ align_abort(struct thread *td, struct trapframe *frame, uint64_t esr,
panic("Misaligned access from kernel space!");
}
call_trapsignal(td, SIGBUS, BUS_ADRALN, (void *)frame->tf_elr);
call_trapsignal(td, SIGBUS, BUS_ADRALN, (void *)frame->tf_elr,
ESR_ELx_EXCEPTION(frame->tf_esr));
userret(td, frame);
}
@ -261,7 +264,8 @@ data_abort(struct thread *td, struct trapframe *frame, uint64_t esr,
error = vm_fault_trap(map, far, ftype, VM_FAULT_NORMAL, &sig, &ucode);
if (error != KERN_SUCCESS) {
if (lower) {
call_trapsignal(td, sig, ucode, (void *)far);
call_trapsignal(td, sig, ucode, (void *)far,
ESR_ELx_EXCEPTION(esr));
} else {
if (td->td_intr_nesting_level == 0 &&
pcb->pcb_onfault != 0) {
@ -483,24 +487,29 @@ do_el0_sync(struct thread *td, struct trapframe *frame)
break;
case EXCP_UNKNOWN:
if (!undef_insn(0, frame))
call_trapsignal(td, SIGILL, ILL_ILLTRP, (void *)far);
call_trapsignal(td, SIGILL, ILL_ILLTRP, (void *)far,
exception);
userret(td, frame);
break;
case EXCP_SP_ALIGN:
call_trapsignal(td, SIGBUS, BUS_ADRALN, (void *)frame->tf_sp);
call_trapsignal(td, SIGBUS, BUS_ADRALN, (void *)frame->tf_sp,
exception);
userret(td, frame);
break;
case EXCP_PC_ALIGN:
call_trapsignal(td, SIGBUS, BUS_ADRALN, (void *)frame->tf_elr);
call_trapsignal(td, SIGBUS, BUS_ADRALN, (void *)frame->tf_elr,
exception);
userret(td, frame);
break;
case EXCP_BRKPT_EL0:
case EXCP_BRK:
call_trapsignal(td, SIGTRAP, TRAP_BRKPT, (void *)frame->tf_elr);
call_trapsignal(td, SIGTRAP, TRAP_BRKPT, (void *)frame->tf_elr,
exception);
userret(td, frame);
break;
case EXCP_MSR:
call_trapsignal(td, SIGILL, ILL_PRVOPC, (void *)frame->tf_elr);
call_trapsignal(td, SIGILL, ILL_PRVOPC, (void *)frame->tf_elr,
exception);
userret(td, frame);
break;
case EXCP_SOFTSTP_EL0:
@ -509,11 +518,12 @@ do_el0_sync(struct thread *td, struct trapframe *frame)
WRITE_SPECIALREG(mdscr_el1,
READ_SPECIALREG(mdscr_el1) & ~DBG_MDSCR_SS);
call_trapsignal(td, SIGTRAP, TRAP_TRACE,
(void *)frame->tf_elr);
(void *)frame->tf_elr, exception);
userret(td, frame);
break;
default:
call_trapsignal(td, SIGBUS, BUS_OBJERR, (void *)frame->tf_elr);
call_trapsignal(td, SIGBUS, BUS_OBJERR, (void *)frame->tf_elr,
exception);
userret(td, frame);
break;
}