5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
30 lines
611 B
ArmAsm
30 lines
611 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
|
|
.globl utrap_trap
|
|
.type utrap_trap,#function
|
|
utrap_trap: /* %g3=handler,%g4=level */
|
|
TRAP_LOAD_THREAD_REG(%g6, %g1)
|
|
ldx [%g6 + TI_UTRAPS], %g1
|
|
brnz,pt %g1, invoke_utrap
|
|
nop
|
|
|
|
ba,pt %xcc, etrap
|
|
rd %pc, %g7
|
|
mov %l4, %o1
|
|
call bad_trap
|
|
add %sp, PTREGS_OFF, %o0
|
|
ba,a,pt %xcc, rtrap
|
|
|
|
invoke_utrap:
|
|
sllx %g3, 3, %g3
|
|
ldx [%g1 + %g3], %g1
|
|
save %sp, -128, %sp
|
|
rdpr %tstate, %l6
|
|
rdpr %cwp, %l7
|
|
andn %l6, TSTATE_CWP, %l6
|
|
wrpr %l6, %l7, %tstate
|
|
rdpr %tpc, %l6
|
|
rdpr %tnpc, %l7
|
|
wrpr %g1, 0, %tnpc
|
|
done
|
|
.size utrap_trap,.-utrap_trap
|