You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
61 lines
1.8 KiB
Python
61 lines
1.8 KiB
Python
__all__ = [
|
|
"Interrupt",
|
|
"INTR_ALIGNMENT",
|
|
"INTR_PROGRAM",
|
|
"INTR_SYSTEM_CALL",
|
|
]
|
|
|
|
|
|
class Interrupt:
|
|
def __init__(self, vector_addr, ir, dr, ee, ri, me, hv, s):
|
|
self.vector_addr = vector_addr
|
|
self.ir = ir
|
|
self.dr = dr
|
|
self.ee = ee
|
|
self.ri = ri
|
|
self.me = me
|
|
self.hv = hv
|
|
self.s = s
|
|
|
|
def write_msr(self, msr):
|
|
def _write_field(field, value):
|
|
stmts = []
|
|
if value is not None:
|
|
stmts.append(getattr(msr.w_mask, field).eq(-1))
|
|
stmts.append(getattr(msr.w_data, field).eq(value))
|
|
return stmts
|
|
|
|
# See PowerISA v3.1, Book III, Section 7.5, Figure 67
|
|
stmts = [
|
|
_write_field("ir" , self.ir),
|
|
_write_field("dr" , self.dr),
|
|
_write_field("fe0", 0),
|
|
_write_field("fe1", 0),
|
|
_write_field("ee" , self.ee),
|
|
_write_field("ri" , self.ri),
|
|
_write_field("me" , self.me),
|
|
_write_field("hv" , self.hv),
|
|
_write_field("s" , self.s),
|
|
|
|
_write_field("pr" , 0),
|
|
_write_field("pmm", 0),
|
|
_write_field("te" , 0),
|
|
_write_field("fp" , 0),
|
|
_write_field("vec", 0),
|
|
_write_field("vsx", 0),
|
|
_write_field("sf" , 1),
|
|
|
|
msr.w_mask[63- 5].eq(1),
|
|
msr.w_data[63- 5].eq(0),
|
|
msr.w_mask[63-31].eq(1),
|
|
msr.w_data[63-31].eq(0),
|
|
]
|
|
return stmts
|
|
|
|
|
|
# TODO: Support MSR.{IR,DR,HV,S,LE} bits, which depend on context (e.g. LPCR)
|
|
|
|
INTR_ALIGNMENT = Interrupt(0x600, ir=None, dr=None, ee=0, ri=0, me=None, hv=None, s=None)
|
|
INTR_PROGRAM = Interrupt(0x700, ir=None, dr=None, ee=0, ri=0, me=None, hv=None, s=None)
|
|
INTR_SYSTEM_CALL = Interrupt(0xC00, ir=None, dr=None, ee=0, ri=0, me=None, hv=None, s=None)
|