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from rpython.jit.metainterp.history import INT, FLOAT
from rpython.jit.backend.arm.arch import WORD, DOUBLE_WORD, JITFRAME_FIXED_SIZE
class AssemblerLocation(object):
_immutable_ = True
type = INT
def is_imm(self):
return False
def is_stack(self):
return False
def is_raw_sp(self):
return False
def is_core_reg(self):
return False
def is_vfp_reg(self):
return False
def is_imm_float(self):
return False
def is_float(self):
return False
def as_key(self):
raise NotImplementedError
def get_position(self):
raise NotImplementedError # only for stack
class RegisterLocation(AssemblerLocation):
_immutable_ = True
width = WORD
def __init__(self, value):
self.value = value
def __repr__(self):
return 'r%d' % self.value
def is_core_reg(self):
return True
def as_key(self): # 0 <= as_key <= 15
return self.value
class VFPRegisterLocation(RegisterLocation):
_immutable_ = True
type = FLOAT
width = 2 * WORD
def __repr__(self):
return 'vfp(d%d)' % self.value
def is_core_reg(self):
return False
def is_vfp_reg(self):
return True
def as_key(self): # 20 <= as_key <= 35
return self.value + 20
def is_float(self):
return True
class SVFPRegisterLocation(VFPRegisterLocation):
"""Single Precission VFP Register"""
_immutable_ = True
width = WORD
type = 'S'
def __repr__(self):
return 'vfp(s%d)' % self.value
class ImmLocation(AssemblerLocation):
_immutable_ = True
width = WORD
def __init__(self, value):
self.value = value
def getint(self):
return self.value
def __repr__(self):
return "imm(%d)" % (self.value)
def is_imm(self):
return True
class ConstFloatLoc(AssemblerLocation):
"""This class represents an imm float value which is stored in memory at
the address stored in the field value"""
_immutable_ = True
width = 2 * WORD
type = FLOAT
def __init__(self, value):
self.value = value
def getint(self):
return self.value
def __repr__(self):
return "imm_float(stored at %d)" % (self.value)
def is_imm_float(self):
return True
def as_key(self): # a real address + 1
return self.value | 1
def is_float(self):
return True
class StackLocation(AssemblerLocation):
_immutable_ = True
def __init__(self, position, fp_offset, type=INT):
if type == FLOAT:
self.width = DOUBLE_WORD
else:
self.width = WORD
self.position = position
self.value = fp_offset
self.type = type
def __repr__(self):
return 'FP(%s)+%d' % (self.type, self.position,)
def location_code(self):
return 'b'
def get_position(self):
return self.position
def assembler(self):
return repr(self)
def is_stack(self):
return True
def as_key(self): # an aligned word + 10000
return self.position + 10000
def is_float(self):
return self.type == FLOAT
class RawSPStackLocation(AssemblerLocation):
_immutable_ = True
def __init__(self, sp_offset, type=INT):
if type == FLOAT:
self.width = DOUBLE_WORD
else:
self.width = WORD
self.value = sp_offset
self.type = type
def __repr__(self):
return 'SP(%s)+%d' % (self.type, self.value,)
def is_raw_sp(self):
return True
def is_float(self):
return self.type == FLOAT
def as_key(self): # a word >= 1000, and < 1000 + size of SP frame
return self.value + 1000
def imm(i):
return ImmLocation(i)
def get_fp_offset(base_ofs, position):
return base_ofs + WORD * (position + JITFRAME_FIXED_SIZE)
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