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https://github.com/micropython/micropython.git
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268acb714d
This commit adds support for writing inline assembler functions when targeting a RV32IMC processor. Given that this takes up a bit of rodata space due to its large instruction decoding table and its extensive error messages, it is enabled by default only on offline targets such as mpy-cross and the qemu port. Signed-off-by: Alessandro Gatti <a.gatti@frob.it>
34 lines
645 B
Python
34 lines
645 B
Python
# test the "data" directive
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@micropython.asm_rv32
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def ret_num(a0) -> uint:
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slli(a0, a0, 2)
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addi(a0, a0, 16)
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auipc(a1, 0)
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add(a1, a1, a0)
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lw(a0, 0(a1))
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jal(zero, HERE)
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data(4, 0x12345678, 0x20000000, 0x40000000, 0x7FFFFFFF + 1, (1 << 32) - 2)
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label(HERE)
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for i in range(5):
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print(hex(ret_num(i)))
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@micropython.asm_rv32
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def ret_num_la(a0) -> uint:
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slli(a0, a0, 2)
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la(a1, DATA)
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add(a1, a1, a0)
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lw(a0, 0(a1))
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jal(zero, HERE)
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label(DATA)
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data(4, 0x12345678, 0x20000000, 0x40000000, 0x7FFFFFFF + 1, (1 << 32) - 2)
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label(HERE)
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for i in range(5):
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print(hex(ret_num_la(i)))
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