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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>
66 lines
976 B
Python
66 lines
976 B
Python
# test stack manipulation
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@micropython.asm_rv32
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def l():
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li(a2, 3)
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addi(sp, sp, -8)
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li(a0, 0x123)
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sw(a0, 0(sp))
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addi(a1, a0, 0x111)
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sw(a1, 4(sp))
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c_lwsp(a3, 0)
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bne(a3, a0, END)
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addi(a2, a2, -1)
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c_lwsp(a3, 4)
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bne(a3, a1, END)
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addi(a2, a2, -1)
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label(END)
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addi(sp, sp, 8)
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mv(a0, a2)
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print(l())
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@micropython.asm_rv32
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def s():
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li(a2, 3)
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addi(sp, sp, -8)
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li(a0, 0x123)
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c_swsp(a0, 0)
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addi(a1, a0, 0x111)
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c_swsp(a1, 4)
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lw(a3, 0(sp))
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bne(a3, a0, END)
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addi(a2, a2, -1)
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lw(a3, 4(sp))
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bne(a3, a1, END)
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addi(a2, a2, -1)
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label(END)
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addi(sp, sp, 8)
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mv(a0, a2)
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print(s())
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@micropython.asm_rv32
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def a():
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li(a2, 3)
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addi(sp, sp, -8)
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li(a0, 0x123)
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sw(a0, 0(sp))
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addi(a1, a0, 0x111)
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sw(a1, 4(sp))
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c_addi4spn(a3, 4)
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lw(a3, -4(a3))
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bne(a3, a0, END)
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addi(a2, a2, -1)
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label(END)
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addi(sp, sp, 8)
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mv(a0, a2)
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print(a())
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