6eda3a7592
entry.S was a hodge-podge of several totally unrelated sets of assembler routines, ranging from FPU trap handlers to hypervisor call functions. Split it up into topic-sized pieces. Signed-off-by: David S. Miller <davem@davemloft.net>
30 lines
576 B
ArmAsm
30 lines
576 B
ArmAsm
.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,pt %xcc, rtrap
|
|
nop
|
|
|
|
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
|