labath created this revision.
Herald added subscribers: srhines, rengolin, aemerson.
Arm64 Procedure Call Standard specifies than only vectors up to 16 bytes
are stored in v0 (which makes sense, as that's the size of the
register). 32-byte vector types are passed as regular structs via x8
pointer. Treat them as such.
This fixes TestReturnValue for arm64-clang. I also split the test case
into two so I can avoid the if(gcc) line, and annotate each test
instead. (It seems the vector type tests fail with gcc only when
targetting x86 arches).
https://reviews.llvm.org/D32813
Files:
packages/Python/lldbsuite/test/functionalities/return-value/TestReturnValue.py
source/Plugins/ABI/SysV-arm64/ABISysV_arm64.cpp
Index: source/Plugins/ABI/SysV-arm64/ABISysV_arm64.cpp
===================================================================
--- source/Plugins/ABI/SysV-arm64/ABISysV_arm64.cpp
+++ source/Plugins/ABI/SysV-arm64/ABISysV_arm64.cpp
@@ -2362,32 +2362,30 @@
if (success)
return_valobj_sp = ValueObjectConstResult::Create(
thread.GetStackFrameAtIndex(0).get(), value, ConstString(""));
- } else if (type_flags & eTypeIsVector) {
+ } else if (type_flags & eTypeIsVector && byte_size <= 16) {
if (byte_size > 0) {
const RegisterInfo *v0_info = reg_ctx->GetRegisterInfoByName("v0", 0);
if (v0_info) {
- if (byte_size <= v0_info->byte_size) {
- std::unique_ptr<DataBufferHeap> heap_data_ap(
- new DataBufferHeap(byte_size, 0));
- const ByteOrder byte_order = exe_ctx.GetProcessRef().GetByteOrder();
- RegisterValue reg_value;
- if (reg_ctx->ReadRegister(v0_info, reg_value)) {
- Error error;
- if (reg_value.GetAsMemoryData(v0_info, heap_data_ap->GetBytes(),
- heap_data_ap->GetByteSize(),
- byte_order, error)) {
- DataExtractor data(DataBufferSP(heap_data_ap.release()),
- byte_order,
- exe_ctx.GetProcessRef().GetAddressByteSize());
- return_valobj_sp = ValueObjectConstResult::Create(
- &thread, return_compiler_type, ConstString(""), data);
- }
+ std::unique_ptr<DataBufferHeap> heap_data_ap(
+ new DataBufferHeap(byte_size, 0));
+ const ByteOrder byte_order = exe_ctx.GetProcessRef().GetByteOrder();
+ RegisterValue reg_value;
+ if (reg_ctx->ReadRegister(v0_info, reg_value)) {
+ Error error;
+ if (reg_value.GetAsMemoryData(v0_info, heap_data_ap->GetBytes(),
+ heap_data_ap->GetByteSize(), byte_order,
+ error)) {
+ DataExtractor data(DataBufferSP(heap_data_ap.release()), byte_order,
+ exe_ctx.GetProcessRef().GetAddressByteSize());
+ return_valobj_sp = ValueObjectConstResult::Create(
+ &thread, return_compiler_type, ConstString(""), data);
}
}
}
}
- } else if (type_flags & eTypeIsStructUnion || type_flags & eTypeIsClass) {
+ } else if (type_flags & eTypeIsStructUnion || type_flags & eTypeIsClass ||
+ (type_flags & eTypeIsVector && byte_size > 16)) {
DataExtractor data;
uint32_t NGRN = 0; // Search ABI docs for NGRN
Index: packages/Python/lldbsuite/test/functionalities/return-value/TestReturnValue.py
===================================================================
--- packages/Python/lldbsuite/test/functionalities/return-value/TestReturnValue.py
+++ packages/Python/lldbsuite/test/functionalities/return-value/TestReturnValue.py
@@ -171,17 +171,45 @@
#self.return_and_test_struct_value ("return_one_int_one_double_packed")
self.return_and_test_struct_value("return_one_int_one_long")
- # icc and gcc don't support this extension.
- if self.getCompiler().endswith('clang'):
- self.return_and_test_struct_value("return_vector_size_float32_8")
- self.return_and_test_struct_value("return_vector_size_float32_16")
- self.return_and_test_struct_value("return_vector_size_float32_32")
- self.return_and_test_struct_value(
- "return_ext_vector_size_float32_2")
- self.return_and_test_struct_value(
- "return_ext_vector_size_float32_4")
- self.return_and_test_struct_value(
- "return_ext_vector_size_float32_8")
+ @expectedFailureAll(oslist=["freebsd"], archs=["i386"])
+ @expectedFailureAll(oslist=["macosx"], archs=["i386"], bugnumber="<rdar://problem/28719652>")
+ @expectedFailureAll(
+ oslist=["linux"],
+ compiler="clang",
+ compiler_version=[
+ "<=",
+ "3.6"],
+ archs=["i386"])
+ @expectedFailureAll(
+ bugnumber="llvm.org/pr25785",
+ hostoslist=["windows"],
+ compiler="gcc",
+ archs=["i386"],
+ triple='.*-android')
+ @expectedFailureAll(compiler=["gcc"], archs=["x86_64", "i386"])
+ @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778")
+ def test_vector_values(self):
+ self.build()
+ exe = os.path.join(os.getcwd(), "a.out")
+ error = lldb.SBError()
+
+ self.target = self.dbg.CreateTarget(exe)
+ self.assertTrue(self.target, VALID_TARGET)
+
+ main_bktp = self.target.BreakpointCreateByName("main", exe)
+ self.assertTrue(main_bktp, VALID_BREAKPOINT)
+
+ self.process = self.target.LaunchSimple(
+ None, None, self.get_process_working_directory())
+ self.assertEqual(len(lldbutil.get_threads_stopped_at_breakpoint(
+ self.process, main_bktp)), 1)
+
+ self.return_and_test_struct_value("return_vector_size_float32_8")
+ self.return_and_test_struct_value("return_vector_size_float32_16")
+ self.return_and_test_struct_value("return_vector_size_float32_32")
+ self.return_and_test_struct_value("return_ext_vector_size_float32_2")
+ self.return_and_test_struct_value("return_ext_vector_size_float32_4")
+ self.return_and_test_struct_value("return_ext_vector_size_float32_8")
def return_and_test_struct_value(self, func_name):
"""Pass in the name of the function to return from - takes in value, returns value."""
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