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from rpython.jit.metainterp.history import INT, FLOAT, VECTOR
import sys
# cannot import from arch.py, currently we have a circular import
if sys.maxint == (2**31 - 1):
WORD = 4
FWORD = 8
else:
WORD = 8
FWORD = 8
DWORD = 2 * WORD
class AssemblerLocation(object):
_immutable_ = True
type = INT
def is_imm(self):
return False
def is_stack(self):
return False
def is_reg(self):
return False
def is_core_reg(self): # for llsupport/assembler.py
return self.is_reg()
def is_fp_reg(self):
return False
def is_vector_reg(self):
return False
def is_imm_float(self):
return False
def is_float(self):
return False
def as_key(self):
raise NotImplementedError
class RegisterLocation(AssemblerLocation):
_immutable_ = True
width = WORD
def __init__(self, value):
self.value = value
def __repr__(self):
return 'r%d' % self.value
def is_reg(self):
return True
def as_key(self):
return self.value
class FPRegisterLocation(RegisterLocation):
_immutable_ = True
type = FLOAT
width = FWORD
def __repr__(self):
return 'fp%d' % self.value
def is_reg(self):
return False
def is_fp_reg(self):
return True
def is_float(self):
return True
def as_key(self):
return self.value + 100
class VectorRegisterLocation(AssemblerLocation):
_immutable_ = True
width = WORD * 2
type = VECTOR
def __init__(self, value):
self.value = value
def __repr__(self):
return 'vr%d' % self.value
def is_reg(self):
return True
def as_key(self):
return self.value + 132
def is_vector_reg(self):
return True
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 = FWORD
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):
return self.value
class StackLocation(AssemblerLocation):
_immutable_ = True
def __init__(self, position, fp_offset, type=INT):
if type == FLOAT:
self.width = FWORD
else:
self.width = WORD
self.position = position
self.value = fp_offset
self.type = type
def __repr__(self):
return 'FP(%s)+%d' % (self.type, self.value)
def get_position(self):
return self.position
def assembler(self):
return repr(self)
def is_stack(self):
return True
def as_key(self):
return -self.position + 10000
def imm(val):
return ImmLocation(val)
def get_fp_offset(base_ofs, position):
from rpython.jit.backend.ppc.register import JITFRAME_FIXED_SIZE
# Argument is a frame position (0, 1, 2...).
# Returns the n'th word beyond the fixed frame size.
return base_ofs + WORD * (position + JITFRAME_FIXED_SIZE)
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