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Documentation for OpenRISC port

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OpenRISC architecture specification:

 https://raw.githubusercontent.com/openrisc/doc/master/openrisc-arch-1.3-rev1.pdf

Currently the port as of the 2022-01-03 rebasing there are no known
architecture specific test failures.

Writing credits for the port are:

 Stafford Horne  <shorne@gmail.com>
 Christian Svensson  <blue@cmd.nu>

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Stafford Horne 2021-10-20 06:55:18 +09:00
parent e981650654
commit c1fc366ec9
2 changed files with 10 additions and 0 deletions
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9
NEWS
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@ -106,6 +106,15 @@ Major new features:
can use it to efficiently locate unwinding information for a code
address.
* Support for OpenRISC running on Linux has been added. This port requires
as least binutils 2.35, GCC 11, and Linux 5.4. Currently only soft-float
ABI is supported:
- or1k-linux-gnu
The OpenRISC ABI is 32-bit big-endian and uses 64-bit time (y2038 safe) and
64-bit file offsets (LFS default).
Deprecated and removed features, and other changes affecting compatibility:
* On x86-64, the LD_PREFER_MAP_32BIT_EXEC environment variable support

1
README
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@ -35,6 +35,7 @@ The GNU C Library supports these configurations for using Linux kernels:
microblaze*-*-linux-gnu
mips-*-linux-gnu
mips64-*-linux-gnu
or1k-*-linux-gnu
powerpc-*-linux-gnu Hardware or software floating point, BE only.
powerpc64*-*-linux-gnu Big-endian and little-endian.
s390-*-linux-gnu