From ea5254ee0b3c730ee82c177135b9d135b9da4e08 Mon Sep 17 00:00:00 2001 From: michaelx_krau Date: Tue, 1 Aug 2006 20:18:19 +0000 Subject: [PATCH] Update to Release notes to include more information on the GCC build limitations. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1172 6f19259b-4bc3-4df7-8a09-765794883524 --- ReleaseNotes.txt | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/ReleaseNotes.txt b/ReleaseNotes.txt index d3b5a719a9..b9da6c3080 100644 --- a/ReleaseNotes.txt +++ b/ReleaseNotes.txt @@ -246,6 +246,16 @@ system will be a superior choice for those wishing to compile with gcc. Make sure that you select the e2fsprogs development package when you install cygwin. It is necessary for the GenFvImage tool. +---------------------------------------- +A Word on gcc for Processor Architectures +---------------------------------------- + +Currently gcc support is limited to IA-32 builds, generating IA-32 PE32 images. + +The X64 bit (Intel 64, etc.) support under the gcc compiler does not support the EFIAPI calling convention (as defined in the UEFI 2.0 specification Chapter 2), so it is not possible to build a working EFI image for an X64 environment. Since the x64 gcc does not support the EFIAPI calling convention the x64 tools do not support generating a PE32+ image. The EFIAPI calling convention is very similar to the Microsoft x64 calling convention. + +On Itanium® Processors the gcc compiler does not support generating a PE32+ image. + ----------------------- Notes on Documentation ----------------------- -- 2.39.2