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From: | Paolo Bonzini |
Subject: | Re: [Help-smalltalk] CStruct ABI and packed structs |
Date: | Sun, 06 Jun 2010 09:35:47 +0200 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100430 Fedora/3.0.4-3.fc13 Lightning/1.0b2pre Thunderbird/3.0.4 |
On 06/06/2010 04:56 AM, Holger Hans Peter Freyther wrote:
On 06/06/2010 10:48 AM, Holger Hans Peter Freyther wrote:2.) The structs I showed are all packed and should not follow the alignment rules...This also creates the need for the #value selector to deal with unaligned memory access... for architectures that need it.
Apart from this, the packed struct class would simply be ^L CCompound subclass: CPackedStruct [ <shape: #word> <category: 'Language-C interface'> <comment: nil> CPackedStruct class >> declaration: array [ "Compile methods that implement the declaration in array." <category: 'subclass creation'> self declaration: array inject: self superclass sizeof into: [:oldOffset :alignment | oldOffset] ] ]
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