RISCV: lui: properly sign extend on rv64 and rv32 #291
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wargio
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Jun 28, 2023
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| var imm = parseInt(instr.parsed.opd[1]); | ||
| var imm20 = imm << 12; | ||
| var n = new Long(imm20, ((Global.evars.archbits > 32) && imm & 0x80000) ? -1 : 0, true); | ||
| return Base.assign(dst, '0x' + n.toString(16)) ; |
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Yes. Forgive naive code. With current HEAD I get:
lui a4, 0xff880 | a4 = 0xffffffffffffffff;
addi a4, a4, -1
which is kinda annoying. I tried to fix it by various C-like means, but I always got 0 at imm20 stage, so I had to resort to throwing new Long object to make it simply work.
|
any update here? |
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Quick but working fix. Tested both rv32 and rv64 (on rv32 simply ignored).
Feel free to edit to match your code (I'm noob at js)