[v2,01/15] RISC-V: Build Infastructure
Commit Message
On Wed, 20 Dec 2017 08:43:18 PST (-0800), joseph@codesourcery.com wrote:
> Another observation:
>
> Since you're using ldbl-128, that presumably means _Float128 and _Float64x
> type names are supported with the same format as long double. So you need
> to add RISC-V to the list in manual/math.texi of ports for which those
> type names and associated interfaces are supported.
That's our intent. How does this look?
Comments
On Fri, 22 Dec 2017, Palmer Dabbelt wrote:
> On Wed, 20 Dec 2017 08:43:18 PST (-0800), joseph@codesourcery.com wrote:
> > Another observation:
> >
> > Since you're using ldbl-128, that presumably means _Float128 and _Float64x
> > type names are supported with the same format as long double. So you need
> > to add RISC-V to the list in manual/math.texi of ports for which those
> > type names and associated interfaces are supported.
>
> That's our intent. How does this look?
This seems reasonable.
> How does this look?
Likewise.
@@ -70,7 +70,7 @@ provided for @code{_Float32}, @code{_Float64} and @code{_Float32x} on
all platforms.
It is also provided for @code{_Float128} and @code{_Float64x} on
powerpc64le (PowerPC 64-bits little-endian), x86_64, x86, ia64,
-aarch64, alpha, mips64, s390 and sparc.
+aarch64, alpha, mips64, riscv, s390 and sparc.
@menu
* Mathematical Constants:: Precise numeric values for often-used
> I don't think you strictly need to add it to the similar lists for
> _Float128 and _Float64x support in the NEWS section for glibc 2.27, since
> the whole port is new rather than this being a new feature for an existing
> port in the RISC-V case. However, the patch series needs to include a
> patch adding a NEWS item about the port, and the port also needs to be
> added to the list in the README file of supported glibc configurations
> using the Linux kernel.
How does this look?
commit 462ad608e82fa7a4c340f05dc6c300610282d8d9
Author: Palmer Dabbelt <palmer@dabbelt.com>
Date: Fri Dec 22 19:33:57 2017 -0800
NEWS and README
@@ -40,13 +40,13 @@ Major new features:
process aborts as the result of assertion failures.
* On platforms where long double has the IEEE binary128 format (aarch64,
- alpha, mips64, s390 and sparc), the math library now implements _Float128
- interfaces for that type, as defined by ISO/IEC TS 18661-3:2015. These
- are the same interfaces added in version 2.26 for some platforms where
+ alpha, mips64, riscv, s390 and sparc), the math library now implements
+ _Float128 interfaces for that type, as defined by ISO/IEC TS 18661-3:2015.
+ These are the same interfaces added in version 2.26 for some platforms where
this format is supported but is not the format of long double.
* On platforms with support for _Float64x (aarch64, alpha, i386, ia64,
- mips64, powerpc64le, s390, sparc and x86_64), the math library now
+ mips64, powerpc64le, riscv, s390, sparc and x86_64), the math library now
implements interfaces for that type, as defined by ISO/IEC TS
18661-3:2015. These are corresponding interfaces to those supported for
_Float128.
@@ -67,6 +67,17 @@ Major new features:
collation ordering. Previous glibc versions used locale-specific
ordering, the change might break systems that relied on that.
+* Support for the RISC-V ISA running on Linux has been added. This port
+ requires at least binutils-2.30, gcc-7.3.0, and linux-4.15; and is supported
+ for the following ISA and ABI pairs:
+
+ - rv32imac ilp32
+ - rv32imafdc ilp32
+ - rv32imafdc ilp32d
+ - rv64imac lp64
+ - rv64imafdc lp64
+ - rv64imafdc lp64d
+
Deprecated and removed features, and other changes affecting compatibility:
* On GNU/Linux, the obsolete Linux constant PTRACE_SEIZE_DEVEL is no longer
@@ -39,6 +39,8 @@ The GNU C Library supports these configurations for using Linux kernels:
powerpc64*-*-linux-gnu Big-endian and little-endian.
s390-*-linux-gnu
s390x-*-linux-gnu
+ riscv32-*-linux-gnu
+ riscv64-*-linux-gnu
sh[34]-*-linux-gnu
sparc*-*-linux-gnu
sparc64*-*-linux-gnu