Date: Sun, 31 Aug 2008 00:18:01 GMT From: Rui Paulo <rpaulo@FreeBSD.org> To: Perforce Change Reviews <perforce@FreeBSD.org> Subject: PERFORCE change 148880 for review Message-ID: <200808310018.m7V0I1LF026851@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=148880 Change 148880 by rpaulo@rpaulo_alpha on 2008/08/31 00:17:48 Add a _start function based on gnu-efi. Affected files ... .. //depot/projects/efi/boot/i386/efi/start.S#2 edit Differences ... ==== //depot/projects/efi/boot/i386/efi/start.S#2 (text+ko) ==== @@ -32,9 +32,34 @@ #define EFI_SUCCESS 0 +/* + * EFI entry point. + * _start(EFI_IMAGE image_handle, EFI_SYSTEM_TABLE *system_table); + * + * We calculate the base address along with _DYNAMIC, relocate us and finally + * pass control to efi_main. + */ + ENTRY(_start) - // TBD - leave + pushl %ebp + movl %esp, %ebp + + pushl 12(%ebp) /* image_handle */ + pushl 8(%ebp) /* system_table */ + call 0f +0: popl %eax + movl %eax, %ebx + addl $ImageBase-0b, %eax + addl $_DYNAMIC-0b, %ebx + pushl %ebx /* dynamic */ + pushl %eax /* ImageBase */ + call _reloc + cmpl $EFI_SUCCESS, %eax + jne 1f + popl %ebx /* remove ImageBase from the stack */ + popl %ebx /* remove dynamic from the stack */ + call efi_main +1: leave ret END(_start) @@ -42,4 +67,4 @@ .section .reloc, "a" .long 0 .long 10 - .word (0 << 12) + .word 0
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