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From: Juan Manuel Guerrero <juan DOT guerrero AT gmx DOT de>
To: djgpp-workers AT delorie DOT com
Subject: Re: Difficulties compiling libc using GCC 4.5.3
Date: Thu, 23 Jun 2011 06:56:30 +0200
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Reply-To: djgpp-workers AT delorie DOT com

Am Donnerstag, 23. Juni 2011 schrieb Rugxulo:

> "sil" is a AMD64 (64-bit long mode) register (isn't it?), so your GAS
> must be confused with normal "si" and AT&T syntax "l" size postfix.

si is the source index register.
AFAIK sil = 8bit, si = 16bit, esi = 32bit, rsi = 64bit.
The AT&T syntax "l" size postfix is applied to the opcode and
not to the registers AFAIK.  E.g. movl = 32bit move opcode.

It should be noted that the bug appears if compiled with -O0.
It compiles flawessly for -O1 and -O2.  The same bug appears
with GCC 4.6.0

Regards,
Juan M. Guerrero