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vrclient: Fixup size for structs with matching field offsets but mismatched size.

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CW-Bug-Id: 19067
This commit is contained in:
Paul Gofman
2021-07-09 01:42:07 +03:00
committed by Andrew Eikum
parent ed7c5db865
commit d46e6aaada
8 changed files with 50 additions and 14 deletions
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48
vrclient_x64/gen_wrapper.py
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@ -280,6 +280,7 @@ skip_structs = [
]
struct_conversion_cache = {}
struct_needs_size_adjustment_cache = {}
print_sizes = []
@ -470,6 +471,7 @@ def handle_method(cfile, classname, winclassname, cppname, method, cpp, cpp_h, e
unnamed = 'a'
do_lin_to_win = None
do_win_to_lin = None
do_size_fixup = None
do_wrap = None
do_unwrap = None
need_convert = []
@ -498,6 +500,10 @@ def handle_method(cfile, classname, winclassname, cppname, method, cpp, cpp_h, e
do_lin_to_win = (strip_const(strip_ns(real_type.get_canonical().spelling)), param.spelling)
#preserve pointers
typename = typename.replace(strip_ns(real_type.spelling), "win%s_%s" % (strip_ns(real_type.get_canonical().spelling), display_sdkver(sdkver)))
elif real_type.get_canonical().kind == clang.cindex.TypeKind.RECORD and \
strip_ns(real_type.spelling) in next_is_size_structs and \
struct_needs_size_adjustment(real_type.get_canonical()):
do_size_fixup = (strip_const(strip_ns(real_type.get_canonical().spelling)), param.spelling)
if param.spelling == "":
cfile.write(", %s _%s" % (typename, unnamed))
@ -588,6 +594,7 @@ def handle_method(cfile, classname, winclassname, cppname, method, cpp, cpp_h, e
unnamed = 'a'
first = True
next_is_size = False
next_is_size_no_conv = False
convert_size_param = ""
for param in get_params(method):
if not first:
@ -614,15 +621,24 @@ def handle_method(cfile, classname, winclassname, cppname, method, cpp, cpp_h, e
elif path_conv and param.spelling in path_conv["w2l_names"]:
cfile.write(", %s ? lin_%s : NULL" % (param.spelling, param.spelling))
cpp.write("(%s)%s" % (param.type.spelling, param.spelling))
elif do_size_fixup and do_size_fixup[1] == param.spelling:
next_is_size = True
next_is_size_no_conv = True
cfile.write(", %s" % param.spelling)
cpp.write("(%s)%s" % (param.type.spelling, param.spelling))
elif next_is_size:
cfile.write(", %s" % param.spelling)
next_is_size = False
if param.type.spelling == "uint32_t":
if next_is_size_no_conv and param.type.spelling == "uint32_t":
cpp.write("std::min(%s, (uint32_t)sizeof(vr::%s))" % (param.spelling, do_size_fixup[0]))
convert_size_param = ", " + param.spelling
elif param.type.spelling == "uint32_t":
cpp.write("%s ? sizeof(lin) : 0" % param.spelling)
convert_size_param = ", " + param.spelling
else:
cpp.write("(%s)%s" % (param.type.spelling, param.spelling))
convert_size_param = ", -1"
next_is_size_no_conv = False
elif "&" in param.type.spelling:
cfile.write(", %s" % param.spelling)
cpp.write("*%s" % param.spelling)
@ -884,15 +900,21 @@ def struct_needs_conversion_nocache(struct):
# if strip_const(struct.spelling) in manually_handled_structs:
# return True
needs_size_adjustment = False
#check 32-bit compat
windows_struct = find_windows_struct(struct)
assert(not windows_struct is None) #must find windows_struct
for field in struct.get_fields():
if struct.get_offset(field.spelling) != windows_struct.get_offset(field.spelling):
return True
return True, False
if field.type.get_canonical().kind == clang.cindex.TypeKind.RECORD and \
struct_needs_conversion(field.type.get_canonical()):
return True
return True, False
assert(struct.get_size() <= windows_struct.get_size())
if struct.get_size() < windows_struct.get_size():
needs_size_adjustment = True
#check 64-bit compat
windows_struct = find_windows64_struct(struct)
@ -901,20 +923,32 @@ def struct_needs_conversion_nocache(struct):
assert(not lin64_struct is None) #must find lin64_struct
for field in lin64_struct.get_fields():
if lin64_struct.get_offset(field.spelling) != windows_struct.get_offset(field.spelling):
return True
return True, False
if field.type.get_canonical().kind == clang.cindex.TypeKind.RECORD and \
struct_needs_conversion(field.type.get_canonical()):
return True
return True, False
return False
assert(lin64_struct.get_size() <= windows_struct.get_size())
if lin64_struct.get_size() < windows_struct.get_size():
needs_size_adjustment = True
return False, needs_size_adjustment
def struct_needs_conversion(struct):
if not sdkver in struct_conversion_cache:
struct_conversion_cache[sdkver] = {}
struct_needs_size_adjustment_cache[sdkver] = {}
if not strip_const(struct.spelling) in struct_conversion_cache[sdkver]:
struct_conversion_cache[sdkver][strip_const(struct.spelling)] = struct_needs_conversion_nocache(struct)
struct_conversion_cache[sdkver][strip_const(struct.spelling)], \
struct_needs_size_adjustment_cache[sdkver][strip_const(struct.spelling)] = \
struct_needs_conversion_nocache(struct)
return struct_conversion_cache[sdkver][strip_const(struct.spelling)]
def struct_needs_size_adjustment(struct):
return not struct_needs_conversion(struct) and struct_needs_size_adjustment_cache[sdkver][strip_const(struct.spelling)]
def get_field_attribute_str(field):
ftype = field.type.get_canonical()
if ftype.kind != clang.cindex.TypeKind.RECORD: