Adjust test for win32 amd64 ABI
This commit is contained in:
Siu Kwan Lam
parent
69a78d0a54
commit
e7a7896710
1 changed files with 197 additions and 2 deletions
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@ -1,5 +1,6 @@
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from __future__ import print_function
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from . import tests
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import sys
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import unittest
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from ctypes import Structure, c_float, c_double, c_uint8, CFUNCTYPE
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from llvm import core as lc
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@ -40,12 +41,28 @@ def skip_if_not_32bits(fn):
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if POINTER_BITSIZE == 32:
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return fn
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def skip_if_not_system_v(cls):
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if not sys.platform.startswith('win32'):
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return cls
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def skip_if_not_win32(cls):
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if sys.platform.startswith('win32'):
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return cls
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class FloatTestMixin(object):
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def assertClose(self, got, expect):
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rel = abs(got - expect) / float(expect)
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self.assertTrue(rel < 1e-6, 'relative error = %f' % rel)
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class TestStructABI(unittest.TestCase, FloatTestMixin):
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@skip_if_not_system_v
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class TestStructSystemVABI(unittest.TestCase, FloatTestMixin):
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'''
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Non microsoft convention
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'''
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#----------------------------------------------------------------------
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# 64 bits
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@skip_if_not_64bits
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def test_bigger_than_two_words_64(self):
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m = lc.Module.new('test_struct_arg')
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@ -192,6 +209,9 @@ class TestStructABI(unittest.TestCase, FloatTestMixin):
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self.assertClose(arg.x * arg.y, ret.x)
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self.assertClose(arg.x / arg.y, ret.y)
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#----------------------------------------------------------------------
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# 32 bits
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@skip_if_not_32bits
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def test_structure_abi_32_1(self):
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'''x86 is simple. Always pass structure as memory.
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@ -350,7 +370,182 @@ class TestStructABI(unittest.TestCase, FloatTestMixin):
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self.assertEqual(arg.x * arg.x, ret.x)
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tests.append(TestStructABI)
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if not sys.platform.startswith('win32'):
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tests.append(TestStructSystemVABI)
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@skip_if_not_win32
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class TestStructMicrosoftABI(unittest.TestCase, FloatTestMixin):
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'''
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Microsoft convention
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'''
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#----------------------------------------------------------------------
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# 64 bits
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@skip_if_not_64bits
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def test_bigger_than_two_words_64(self):
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m = lc.Module.new('test_struct_arg')
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double_type = lc.Type.double()
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uint8_type = lc.Type.int(8)
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struct_type = lc.Type.struct([double_type, double_type, uint8_type])
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struct_ptr_type = lc.Type.pointer(struct_type)
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func_type = lc.Type.function(lc.Type.void(),
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[struct_ptr_type, struct_ptr_type])
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func = m.add_function(func_type, name='foo')
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# return value pointer
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func.args[0].add_attribute(lc.ATTR_STRUCT_RET)
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# pass structure by value
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func.args[1].add_attribute(lc.ATTR_BY_VAL)
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# define function body
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builder = lc.Builder.new(func.append_basic_block(''))
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arg = builder.load(func.args[1])
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e1, e2, e3 = [builder.extract_value(arg, i) for i in range(3)]
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se1 = builder.fmul(e1, e2)
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se2 = builder.fdiv(e1, e2)
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ret = builder.insert_value(lc.Constant.undef(struct_type), se1, 0)
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ret = builder.insert_value(ret, se2, 1)
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ret = builder.insert_value(ret, e3, 2)
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builder.store(ret, func.args[0])
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builder.ret_void()
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del builder
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# verify
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m.verify()
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print(m)
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# use with ctypes
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engine = le.EngineBuilder.new(m).create()
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ptr = engine.get_pointer_to_function(func)
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cfunctype = CFUNCTYPE(TwoDoubleOneByte, TwoDoubleOneByte)
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cfunc = cfunctype(ptr)
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arg = TwoDoubleOneByte(x=1.321321, y=6.54352, z=128)
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ret = cfunc(arg)
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print(arg)
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print(ret)
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self.assertClose(arg.x * arg.y, ret.x)
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self.assertClose(arg.x / arg.y, ret.y)
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self.assertEqual(arg.z, ret.z)
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@skip_if_not_64bits
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def test_just_two_words_64(self):
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m = lc.Module.new('test_struct_arg')
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double_type = lc.Type.double()
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struct_type = lc.Type.struct([double_type, double_type])
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struct_ptr_type = lc.Type.pointer(struct_type)
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func_type = lc.Type.function(lc.Type.void(),
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[struct_ptr_type, struct_ptr_type])
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func = m.add_function(func_type, name='foo')
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# return value pointer
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func.args[0].add_attribute(lc.ATTR_STRUCT_RET)
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# pass structure by value
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func.args[1].add_attribute(lc.ATTR_BY_VAL)
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# define function body
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builder = lc.Builder.new(func.append_basic_block(''))
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arg = builder.load(func.args[1])
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e1, e2 = [builder.extract_value(arg, i) for i in range(2)]
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se1 = builder.fmul(e1, e2)
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se2 = builder.fdiv(e1, e2)
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ret = builder.insert_value(lc.Constant.undef(struct_type), se1, 0)
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ret = builder.insert_value(ret, se2, 1)
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builder.store(ret, func.args[0])
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builder.ret_void()
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del builder
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# verify
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m.verify()
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print(m)
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# use with ctypes
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engine = le.EngineBuilder.new(m).create()
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ptr = engine.get_pointer_to_function(func)
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cfunctype = CFUNCTYPE(TwoDouble, TwoDouble)
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cfunc = cfunctype(ptr)
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arg = TwoDouble(x=1.321321, y=6.54352)
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ret = cfunc(arg)
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print(arg)
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print(ret)
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self.assertClose(arg.x * arg.y, ret.x)
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self.assertClose(arg.x / arg.y, ret.y)
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@skip_if_not_64bits
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def test_two_halfwords(self):
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'''Arguments smaller or equal to a word is packed into a word.
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Floats structure are not passed on the XMM.
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Treat it as a i64.
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'''
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m = lc.Module.new('test_struct_arg')
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float_type = lc.Type.float()
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struct_type = lc.Type.struct([float_type, float_type])
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abi_type = lc.Type.int(64)
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func_type = lc.Type.function(abi_type, [abi_type])
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func = m.add_function(func_type, name='foo')
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# define function body
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builder = lc.Builder.new(func.append_basic_block(''))
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arg = func.args[0]
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struct_ptr = builder.alloca(struct_type)
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struct_int_ptr = builder.bitcast(struct_ptr, lc.Type.pointer(abi_type))
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builder.store(arg, struct_int_ptr)
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arg = builder.load(struct_ptr)
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e1, e2 = [builder.extract_value(arg, i) for i in range(2)]
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se1 = builder.fmul(e1, e2)
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se2 = builder.fdiv(e1, e2)
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ret = builder.insert_value(lc.Constant.undef(struct_type), se1, 0)
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ret = builder.insert_value(ret, se2, 1)
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builder.store(ret, struct_ptr)
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ret = builder.load(struct_int_ptr)
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builder.ret(ret)
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del builder
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# verify
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m.verify()
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print(m)
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# use with ctypes
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engine = le.EngineBuilder.new(m).create()
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ptr = engine.get_pointer_to_function(func)
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cfunctype = CFUNCTYPE(TwoFloat, TwoFloat)
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cfunc = cfunctype(ptr)
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arg = TwoFloat(x=1.321321, y=6.54352)
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ret = cfunc(arg)
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print(arg)
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print(ret)
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self.assertClose(arg.x * arg.y, ret.x)
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self.assertClose(arg.x / arg.y, ret.y)
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if sys.platform.startswith('win32'):
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tests.append(TestStructMicrosoftABI)
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if __name__ == "__main__":
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unittest.main()
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