MIPS: xburst: simplify relocation offset calculation
authorGabor Juhos <juhosg@openwrt.org>
Wed, 30 Jan 2013 04:51:06 +0000 (04:51 +0000)
committerDaniel Schwierzeck <daniel.schwierzeck@gmail.com>
Wed, 30 Jan 2013 22:33:27 +0000 (23:33 +0100)
commit6d8622788020265a9e98e8345c6435c8680c992c
tree7abf0101a930ce97f5b9126c43735348e5967a1d
parent025f2b338072781cd747bf7365cf43fcf9f40f1a
MIPS: xburst: simplify relocation offset calculation

The current code uses four instructions and a
temporary register to calculate the relocation
offset and to adjust the gp register.

The relocation offset can be calculated directly
from the CONFIG_SYS_MONITOR_BASE constant and from
the destination address. The resulting offset can
be used to adjust the gp pointer.

This approach makes the code a bit simpler because
it needs two instructions only.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
Cc: Xiangfu Liu <xiangfu@openmobilefree.net>
arch/mips/cpu/xburst/start.S