2260fe0828
This commit adds a series of test cases to exercise the Viper code generator load/store emitting capabilities on certain boundary conditions. The new test cases check whether the emitted load/store code performs correctly when dealing with specific memory offsets, which trigger specific code generation sequences on different architectures. Right now the cases are for unsigned offsets whose bitmasks span up to 5, 8, and 12 bits (respectively Arm/Thumb, Xtensa, RV32). Signed-off-by: Alessandro Gatti <a.gatti@frob.it>
35 lines
803 B
Python
35 lines
803 B
Python
# Test boundary conditions for various architectures
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TEST_DATA = (
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(3, (0x04030201, 0x08070605, 0x0C0B0A09)),
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(63, (0x100F0E0D, 0x14131211, 0x18171615)),
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(1023, (0x1C1B1A19, 0x201F1E1D, 0x24232221)),
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)
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SET_TEMPLATE = """
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@micropython.viper
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def set{off}(dest: ptr32):
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dest[{off}] = {val} & 0x3FFFFFFF
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set{off}(b)
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print(b[{off} * 4:({off} + 1) * 4])
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"""
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@micropython.viper
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def set_index(dest: ptr32, i: int, val: int):
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dest[i] = val
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b = bytearray(5000)
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for start, vals in TEST_DATA:
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for i, v in enumerate(vals):
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set_index(b, start + i, v)
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print(b[(start + i) * 4 : (start + i + 1) * 4])
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for i in range(len(b)):
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b[i] = 0
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for start, vals in TEST_DATA:
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for i, v in enumerate(vals):
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exec(SET_TEMPLATE.format(off=start + i, val=v + 0x01010101))
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