From 40ca951bdb804bc42c0e1b06c20a48da98667e03 Mon Sep 17 00:00:00 2001 From: Palmer Dabbelt Date: Tue, 26 Dec 2017 20:55:44 -0800 Subject: [PATCH] Skeleton documentation for the RISC-V port During the upstreaming process it was suggested that I add a handful of small documentation entries about the RISC-V port, which I've collected here. 2018-01-29 Palmer Dabbelt * manual/math.texi: RISC-V supports _Float128 and _Float64x. --- ChangeLog | 1 + NEWS | 16 ++++++++++++---- README | 1 + manual/math.texi | 2 +- 4 files changed, 15 insertions(+), 5 deletions(-) diff --git a/ChangeLog b/ChangeLog index ed498e8df3..2180403522 100644 --- a/ChangeLog +++ b/ChangeLog @@ -2,6 +2,7 @@ * sysdeps/init_array/crti.S (.section .init_array): Add PREINIT_FUNCTION when defined. + * manual/math.texi: RISC-V supports _Float128 and _Float64x. 2018-01-29 Florian Weimer diff --git a/NEWS b/NEWS index ecefc52364..6f3b9b0c8b 100644 --- a/NEWS +++ b/NEWS @@ -41,13 +41,13 @@ 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. @@ -98,6 +98,14 @@ Major new features: to fail to load locales and fall back to the builtin C/POSIX locales. See notes below for other changes affecting compatibility. +* 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: + + - rv64imac lp64 + - rv64imafdc lp64 + - rv64imafdc lp64d + Deprecated and removed features, and other changes affecting compatibility: * Statically compiled applications attempting to load locales compiled for the diff --git a/README b/README index c7578265f8..d763393f3c 100644 --- a/README +++ b/README @@ -39,6 +39,7 @@ 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 + riscv64-*-linux-gnu sh[34]-*-linux-gnu sparc*-*-linux-gnu sparc64*-*-linux-gnu diff --git a/manual/math.texi b/manual/math.texi index a9f2a98138..d19a14b47d 100644 --- a/manual/math.texi +++ b/manual/math.texi @@ -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