sample.asm

# -------------------------
# Code segment (.text)
# -------------------------
.text
main:
    add   x1, x2, x3        # simple R-format
    addi  x4, x1, 10        # I-format immediate
    sw    x4, 0(x5)         # S-format store word
    lw    x6, 0(x5)         # I-format load
    beq   x6, x4, label1    # SB-format branch (forward)
    andi  x7, x6, 255       # I-format, mask
    jal   x0, end           # UJ-format jump to 'end' (used as termination jump)
label1:
    or    x8, x7, x1        # R-format
    jalr  x0, 0(x1)         # I-format, return-like (jalr x0, x1, 0)
end:
    sd    x0, 8(x0)         # S-format store double (tests SD encoding)

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# Data segment (.data)
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.data
msg:    .asciz "Hi\n"            # 4 bytes -> 'H' 'i' '\n' '\0'
val:    .dword 0x1122334455667788  # 8-byte value (little-endian)