Function parse_store_mem

crates/asm-to-binary/src/assembler/parser.rs:463–468

Parse `"rs2, imm(rs1)"` -> (`rs2_reg`, `rs1_reg`, `imm_i32`). Used by stores.

(operands: &str)

    // Uses t1 (x6) as a temporary for the high half.
    const T1: u8 = 6;
    let low32 = (imm & 0xFFFF_FFFF) as i32;
    let high32 = ((imm >> 32) & 0xFFFF_FFFF) as i32;

    load32(T1, high32, &mut out);
    out.push(AsmToken::Real(RealInstruction::Slli(Slli::new(T1, T1, 32))));
    load32(rd, low32, &mut out);
    // Zero-extend low32 into rd (clear sign-extension from load32).
    out.push(AsmToken::Real(RealInstruction::Slli(Slli::new(rd, rd, 32))));
    out.push(AsmToken::Real(RealInstruction::Srli(Srli::new(rd, rd, 32))));