I managed to build mpc8548 u-boot on FreeBSD with it's native powerpc cross
tools. All went fine after a little changes.
But at final linking stage, I got those "start.o(.got2+0x1c): relocation
truncated to fit: blah blah blah..." messages.
so I looked at .lds and it's write
* .resetvec RESET_VECTOR_ADDRESS :*
* {*
* *(.resetvec)*
* } :text = 0xffff*
* . = RESET_VECTOR_ADDRESS + 0x4;*
* /**
* * Make sure that the bss segment isn't linked at 0x0, otherwise its*
* * address won't be updated during relocation fixups. Note that*
* * this is a temporary fix. Code to dynamically the fixup the bss*
* * location will be added in the future. When the bss relocation*
* * fixup code is present this workaround should be removed.*
* */*
*#if (RESET_VECTOR_ADDRESS == 0xfffffffc)*
* . |= 0x10;*
*#endif*
* __bss_start = .;*
* .bss (NOLOAD) :*
* {*
* *(.sbss) *(.scommon)*
* *(.dynbss)*
* *(.bss)*
* *(COMMON)*
* } :bss*
* . = ALIGN(4);*
* _end = . ;*
* PROVIDE (end = .);*
Which cause my FreeBSD ld to do 64bit calculations, which lead to as in the
map file
* 0x0000000100000000 . = 0x100000000*
* 0x0000000100000010 . = 0x10*
* 0x0000000100000010 __bss_start = .*
* ....blah blah blah...*
I haven't read u-boot code yet, could anybody tells me what this perpose is.
Is it safe to just put .=0x10 there instead of .|=0x10 ?
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