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38282956e0
We use the latest nde32 official toolchain to verify the bug of
GP-related instruction was fixed (we can remove "-mno-gp-direct" flag to
save code space), and code optimization.
We got some error on official toolchain, so we fix them as well:
- "break" instead of "trap".
N8 CPU does not support "trap" instruction to generate an unconditional
trap exception, but no error occurred while compiling by using current
GCC toolchain (this will trigger a reserved instruction exception,
so "ASSERT()" still work).
We use "break" to generate a exception in this change.
- "li" instead of "la".
To fix the error: "Error: la must use with symbol".
Also fix:
- The "_bss_start" has to be word-aligned because we use "lwi" instruction
to load a word from the memory into the general register.
BRANCH=none
BUG=none
TEST=1. console command "crash assert".
2. check registers settings: f02030h, f0203eh, and f02044h.
Change-Id: I33404a1d60eeebfa135bf43d3a7d5e73ab35c678
Reviewed-on: https://chromium-review.googlesource.com/422608
Commit-Ready: Dino Li <Dino.Li@ite.com.tw>
Tested-by: Dino Li <Dino.Li@ite.com.tw>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly