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arc: fix relocation for big-endian target

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In case of little-endian ARC700 instructions (which may include target
address) are encoded as middle-endian. That's why it's required to swap
bytes after read and ten right before write back.

But in case of big-endian ARC700 instructions are encoded as a plain
big-endian. Thus no need for byte swapping.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

Cc: Francois Bedard <fbedard@synopsys.com>
Cc: Tom Rini <trini@ti.com>
cc: Noam Camus <noamc@ezchip.com>
This commit is contained in:
Alexey Brodkin 2014-02-18 15:10:58 +04:00 committed by Tom Rini
parent c42eb7f2c7
commit 36ae5cd2a8
1 changed files with 4 additions and 0 deletions
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4
arch/arc/lib/relocate.c
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@ -41,19 +41,23 @@ int do_elf_reloc_fixups(void)
*/
memcpy(&val, offset_ptr_ram, sizeof(int));
#ifdef __LITTLE_ENDIAN__
/* If location in ".text" section swap value */
if ((unsigned int)offset_ptr_rom <
(unsigned int)&__text_end)
val = (val << 16) | (val >> 16);
#endif
/* Check that the target points into .text */
if (val >= CONFIG_SYS_TEXT_BASE && val <=
(unsigned int)&__bss_end) {
val += gd->reloc_off;
#ifdef __LITTLE_ENDIAN__
/* If location in ".text" section swap value */
if ((unsigned int)offset_ptr_rom <
(unsigned int)&__text_end)
val = (val << 16) | (val >> 16);
#endif
memcpy(offset_ptr_ram, &val, sizeof(int));
} else {
debug(" %p: rom reloc %x, ram %p, value %x, limit %x\n",