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Re: [Tinycc-devel] lcall invalid hex code

From: Michael Matz
Subject: Re: [Tinycc-devel] lcall invalid hex code
Date: Tue, 3 May 2016 01:20:10 +0200 (CEST)
User-agent: Alpine 2.20 (LSU 67 2015-01-07)


On Tue, 3 May 2016, Michael Matz wrote:

Not really. It does work-around the above problem, but at the expense of not using the one-byte opcode 0x90+reg anymore, even if possible. Generally the opcode in i386-asm.h are sorted by some sort of preference (e.g. first the one-byte opcodes for nops, then the more capable two-byte opcodes for general xchg). Something isn't right in the i386-asm.c opcode parser/selector. It should reject the first ("xchgw") alternative if presented with byte-registers. I'll take a look.

Fixed in mob, plus some more asm bugs (32 and 64 bit).


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