def try_lookup_litstr(imm):
"""Return the literal string corresponding to the litstr ID `imm'. If
we can't resolve it, just return `imm'."""
if unit.curunit is None:
return imm
litstr = lookup_litstr(imm, unit.curunit)
return string_data_val(rawptr(litstr))
def imm_info(ptr, immtype):
"""Return the size and value of the immediate at `ptr' with immediate
type `immtype'.
"""
info = {}
if immtype in iva_imm_types():
imm = ptr.cast(T('unsigned char').pointer()).dereference()
if imm & 0x1:
iva_type = T('int32_t')
else:
iva_type = T('unsigned char')
imm = ptr.cast(iva_type.pointer()).dereference()
info['size'] = iva_type.sizeof
info['value'] = imm >> 1
elif immtype in vec_imm_types():
prefixes = 2 if immtype == V('HPHP::MA') else 1
elm_size = vec_elm_sizes()[vec_imm_types().index(immtype)]
num_elms = ptr.cast(T('int32_t').pointer()).dereference()
info['size'] = prefixes * T('int32_t').sizeof + \
elm_size * num_elms
info['value'] = '<vector>'
elif immtype == V('HPHP::RATA'):
imm = ptr.cast(T('unsigned char').pointer()).dereference()
radb = V('HPHP::kRATArrayDataBit')
tag = (imm & ~radb).cast(T('HPHP::RepoAuthType::Tag'))
high_bit = (imm & radb)
if tag in rata_arrs():
info['size'] = 5 if high_bit else 1
elif tag in rata_objs():
info['size'] = 5
else:
info['size'] = 1
info['value'] = str(tag)[len('HPHP::RepoAuthType::Tag::'):]
else:
table_name = 'HPHP::immSize(unsigned char const*, int)::argTypeToSizes'
if immtype >= 0:
size = op_table(table_name)[as_idx(immtype)]
uint = T(uints_by_size()[int(size)])
imm = ptr.cast(uint.pointer()).dereference()
au = imm.cast(T('HPHP::ArgUnion'))
info['size'] = size
info['value'] = au['u_' + str(immtype)[6:]]
# Try to print out literal strings.
if immtype == V('HPHP::SA') and unit.curunit is not None:
litstr = lookup_litstr(info['value'], unit.curunit)
info['value'] = litstr['m_data']
else:
info['size'] = 0
info['value'] = None
return info
def imm_info(ptr, immtype):
"""Return the size and value of the immediate at `ptr' with immediate
type `immtype'.
"""
info = {}
if immtype in iva_imm_types():
imm = ptr.cast(T('unsigned char').pointer()).dereference()
if imm & 0x80:
raw = ptr.cast(T('uint32_t').pointer()).dereference()
info['value'] = ((raw & 0xffffff00) >> 1) | (raw & 0x7f);
info['size'] = 4
else:
info['value'] = imm
info['size'] = 1
elif immtype in vec_imm_types():
elm_size = vec_elm_sizes()[vec_imm_types().index(immtype)]
num_elms = ptr.cast(T('int32_t').pointer()).dereference()
info['size'] = T('int32_t').sizeof + elm_size * num_elms
info['value'] = '<vector>'
elif immtype == V('HPHP::RATA'):
imm = ptr.cast(T('unsigned char').pointer()).dereference()
radb = V('HPHP::kRATArrayDataBit')
tag = (imm & ~radb).cast(T('HPHP::RepoAuthType::Tag'))
high_bit = (imm & radb)
if tag in rata_arrs():
info['size'] = 5 if high_bit else 1
elif tag in rata_objs():
info['size'] = 5
else:
info['size'] = 1
info['value'] = str(tag)[len('HPHP::RepoAuthType::Tag::'):]
elif immtype == V('HPHP::LAR'):
first = ptr.cast(T('unsigned char').pointer()).dereference()
if first & 0x1:
first_type = T('int32_t')
else:
first_type = T('unsigned char')
count = (ptr.cast(T('unsigned char').pointer())
+ first_type.sizeof).dereference()
if count & 0x1:
count_type = T('int32_t')
else:
count_type = T('unsigned char')
first = ptr.cast(first_type.pointer()).dereference()
count = (ptr.cast(T('unsigned char').pointer())
+ first_type.sizeof).cast(count_type.pointer()).dereference()
info['size'] = first_type.sizeof + count_type.sizeof
info['value'] = 'L:' + str(first >> 1) + '+' + str(count >> 1)
else:
table_name = 'HPHP::immSize(unsigned char const*, int)::argTypeToSizes'
if immtype >= 0:
size = op_table(table_name)[as_idx(immtype)]
uint = T(uints_by_size()[int(size)])
imm = ptr.cast(uint.pointer()).dereference()
au = imm.cast(T('HPHP::ArgUnion'))
info['size'] = size
info['value'] = au['u_' + str(immtype)[6:]]
# Try to print out literal strings.
if immtype == V('HPHP::SA') and unit.curunit is not None:
litstr = lookup_litstr(info['value'], unit.curunit)
info['value'] = string_data_val(rawptr(litstr))
else:
info['size'] = 0
info['value'] = None
return info
def imm_info(ptr, immtype):
"""Return the size and value of the immediate at `ptr' with immediate
type `immtype'.
"""
info = {}
if immtype in iva_imm_types():
imm = ptr.cast(T('unsigned char').pointer()).dereference()
if imm & 0x1:
iva_type = T('int32_t')
else:
iva_type = T('unsigned char')
imm = ptr.cast(iva_type.pointer()).dereference()
info['size'] = iva_type.sizeof
info['value'] = imm >> 1
elif immtype in vec_imm_types():
prefixes = 2 if immtype == V('HPHP::MA') else 1
elm_size = vec_elm_sizes()[vec_imm_types().index(immtype)]
num_elms = ptr.cast(T('int32_t').pointer()).dereference()
info['size'] = prefixes * T('int32_t').sizeof + \
elm_size * num_elms
info['value'] = '<vector>'
elif immtype == V('HPHP::RATA'):
imm = ptr.cast(T('unsigned char').pointer()).dereference()
radb = V('HPHP::kRATArrayDataBit')
tag = (imm & ~radb).cast(T('HPHP::RepoAuthType::Tag'))
high_bit = (imm & radb)
if tag in rata_arrs():
info['size'] = 5 if high_bit else 1
elif tag in rata_objs():
info['size'] = 5
else:
info['size'] = 1
info['value'] = str(tag)[len('HPHP::RepoAuthType::Tag::'):]
else:
table_name = 'HPHP::immSize(HPHP::Op const*, int)::argTypeToSizes'
if immtype >= 0:
size = op_table(table_name)[as_idx(immtype)]
uint = T(uints_by_size()[int(size)])
imm = ptr.cast(uint.pointer()).dereference()
au = imm.cast(T('HPHP::ArgUnion'))
info['size'] = size
info['value'] = au['u_' + str(immtype)[6:]]
# Try to print out literal strings.
if immtype == V('HPHP::SA') and unit.curunit is not None:
litstr = lookup_litstr(info['value'], unit.curunit)
info['value'] = litstr['m_data']
else:
info['size'] = 0
info['value'] = None
return info
def imm_info(ptr, immtype):
"""Return the size and value of the immediate at `ptr' with immediate
type `immtype'.
"""
info = {}
if immtype in iva_imm_types():
imm = ptr.cast(T("unsigned char").pointer()).dereference()
if imm & 0x1:
iva_type = T("int32_t")
else:
iva_type = T("unsigned char")
imm = ptr.cast(iva_type.pointer()).dereference()
info["size"] = iva_type.sizeof
info["value"] = imm >> 1
elif immtype in vec_imm_types():
prefixes = 2 if immtype == V("HPHP::MA") else 1
elm_size = vec_elm_sizes()[vec_imm_types().index(immtype)]
num_elms = ptr.cast(T("int32_t").pointer()).dereference()
info["size"] = prefixes * T("int32_t").sizeof + elm_size * num_elms
info["value"] = "<vector>"
elif immtype == V("HPHP::RATA"):
imm = ptr.cast(T("unsigned char").pointer()).dereference()
radb = V("HPHP::kRATArrayDataBit")
tag = (imm & ~radb).cast(T("HPHP::RepoAuthType::Tag"))
high_bit = imm & radb
if tag in rata_arrs():
info["size"] = 5 if high_bit else 1
elif tag in rata_objs():
info["size"] = 5
else:
info["size"] = 1
info["value"] = str(tag)[len("HPHP::RepoAuthType::Tag::") :]
else:
table_name = "HPHP::immSize(HPHP::Op const*, int)::argTypeToSizes"
if immtype >= 0:
size = op_table(table_name)[as_idx(immtype)]
uint = T(uints_by_size()[int(size)])
imm = ptr.cast(uint.pointer()).dereference()
au = imm.cast(T("HPHP::ArgUnion"))
info["size"] = size
info["value"] = au["u_" + str(immtype)[6:]]
# Try to print out literal strings.
if immtype == V("HPHP::SA") and unit.curunit is not None:
litstr = lookup_litstr(info["value"], unit.curunit)
info["value"] = litstr["m_data"]
else:
info["size"] = 0
info["value"] = None
return info
