Wolfgang Denk wrote:
Dear Chunhe Lan,
In message <1334719161-3500-1-git-send-email-chunhe....@freescale.com>
you wrote:
The -fPIC/-fpic flag belongs with -mrelocatable. The -fpic flag can
limit the size of the GOT and produce smaller binaries, so it causes
some GOT entries to be lost in the gcc 4.6 version. But -fPIC flag
allows the maximum possible size of the GOT entries.
However, currently -mrelocatable promotes -fpic flag to -fPIC flag.
This reverts that portion of the
commit 33ee4c92339ee386662c0ee2d221098c5cc8b07e.
As you state yourself, your modification has the negative impact of
increasing the image size. What would be the benefits of it?
Are you trying to fix any specific problem? Which one? I am not aware
of any related isses for any of the mainline PowerPC systems...
Yes, I have fixed the booting issue of nand u-boot of
P1010/P1022/P1023/P2020 with this patch.
When use gcc 4.5 version, produce the size of u-boot-nand.bin to be
same with -fpic or -fPIC.
The u-boot-nand.bin is OK.
But when use gcc 4.6 version, produce the size of u-boot-nand.bin to
be different with -fpic or -fPIC.
The some GOT entries of u-boot-nand.bin are lost with -fpic(because
limit the size), so
u-boot-nand.bin hangs when booting. But use -fPIC, the
u-boot-nand.bin is OK.
And this patch reverts that portion of the commit
33ee4c92339ee386662c0ee2d221098c5cc8b07e.
Thanks,
Chunhe
Best regards,
Wolfgang Denk
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