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2 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Palmer Dabbelt
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c506155709
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RISC-V: Build Infastructure
This patch lays out the top-level orginazition of the RISC-V port. It
contains all the Implies files as well as various other fragments of
build infastructure for the RISC-V port. This contains the only change
to a shared file: config.h.in.
RISC-V is a family of base ISAs with optional extensions. The base ISAs
are RV32I and RV64I, which are 32-bit and 64-bit integer-only ISAs, but
this port currently only supports RV64I based systems. Support for
RISC-V lives in in sysdeps/riscv. In addition to these ISAs, our glibc
port supports most of the currently-defined extensions: the A extension
for atomics, the M extension for multiplication, the C extension for
compressed instructions, and the F/D extensions for single/double
precision IEEE floating-point. Most of these extensions are handled by
GCC, but glibc defines various floating-point wrappers and emulation
routines as well as some atomic wrappers.
We support running glibc-based programs on Linux, the support for which
lives in sysdeps/unix/sysv/linux/riscv.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/Implies: New file.
* sysdeps/riscv/Makefile: Likewise.
* sysdeps/riscv/configure: Likewise.
* sysdeps/riscv/configure.ac: Likewise.
* sysdeps/riscv/nptl/Makefile: Likewise.
* sysdeps/riscv/preconfigure: Likewise.
* sysdeps/riscv/rv64/Implies-after: Likewise.
* sysdeps/riscv/rv64/rvd/Implies: Likewise.
* sysdeps/riscv/rv64/rvf/Implies: Likewise.
* sysdeps/unix/sysv/linux/riscv/Implies: Likewise.
* sysdeps/unix/sysv/linux/riscv/Makefile: Likewise.
* sysdeps/unix/sysv/linux/riscv/Versions: Likewise.
* sysdeps/unix/sysv/linux/riscv/configure: Likewise.
* sysdeps/unix/sysv/linux/riscv/configure.ac: Likewise.
* sysdeps/unix/sysv/linux/riscv/ldd-rewrite.sed: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/Implies: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/Makefile: Likewise.
* sysdeps/unix/sysv/linux/riscv/shlib-versions: Likewise.
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Palmer Dabbelt
|
b2cb5e0298
|
RISC-V: Hard Float Support
This patch contains hardware floating-point support for the RISC-V ISA.
While we currently only support hard-float systems with both the F and D
extensions, I've left the F-specific code split out into seperate
folders in order to ease adding support for F-only and RV32I-based
systems in the future. I gave this a quick once-over and believe I've
removed all the code that implements RV32IF, RV32IFD, and RV64IF
targets.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/rv64/rvd/s_ceil.c: New file.
* sysdeps/riscv/rv64/rvd/s_floor.c: Likewise.
* sysdeps/riscv/rv64/rvd/s_llrint.c: Likewise.
* sysdeps/riscv/rv64/rvd/s_llround.c: Likewise.
* sysdeps/riscv/rv64/rvd/s_lrint.c: Likewise.
* sysdeps/riscv/rv64/rvd/s_lround.c: Likewise.
* sysdeps/riscv/rv64/rvd/s_nearbyint.c: Likewise.
* sysdeps/riscv/rv64/rvd/s_rint.c: Likewise.
* sysdeps/riscv/rv64/rvd/s_round.c: Likewise.
* sysdeps/riscv/rv64/rvd/s_roundeven.c: Likewise.
* sysdeps/riscv/rv64/rvd/s_trunc.c: Likewise.
* sysdeps/riscv/rv64/rvf/s_llrintf.c: Likewise.
* sysdeps/riscv/rv64/rvf/s_llroundf.c: Likewise.
* sysdeps/riscv/rv64/rvf/s_lrintf.c: Likewise.
* sysdeps/riscv/rv64/rvf/s_lroundf.c: Likewise.
* sysdeps/riscv/rvd/e_sqrt.c: Likewise.
* sysdeps/riscv/rvd/s_copysign.c: Likewise.
* sysdeps/riscv/rvd/s_finite.c: Likewise.
* sysdeps/riscv/rvd/s_fma.c: Likewise.
* sysdeps/riscv/rvd/s_fmax.c: Likewise.
* sysdeps/riscv/rvd/s_fmin.c: Likewise.
* sysdeps/riscv/rvd/s_fpclassify.c: Likewise.
* sysdeps/riscv/rvd/s_isinf.c: Likewise.
* sysdeps/riscv/rvd/s_isnan.c: Likewise.
* sysdeps/riscv/rvd/s_issignaling.c: Likewise.
* sysdeps/riscv/rvf/e_sqrtf.c: Likewise.
* sysdeps/riscv/rvf/fclrexcpt.c: Likewise.
* sysdeps/riscv/rvf/fegetenv.c: Likewise.
* sysdeps/riscv/rvf/fegetmode.c: Likewise.
* sysdeps/riscv/rvf/fegetround.c: Likewise.
* sysdeps/riscv/rvf/feholdexcpt.c: Likewise.
* sysdeps/riscv/rvf/fesetenv.c: Likewise.
* sysdeps/riscv/rvf/fesetexcept.c: Likewise.
* sysdeps/riscv/rvf/fesetmode.c: Likewise.
* sysdeps/riscv/rvf/fesetround.c: Likewise.
* sysdeps/riscv/rvf/feupdateenv.c: Likewise.
* sysdeps/riscv/rvf/fgetexcptflg.c: Likewise.
* sysdeps/riscv/rvf/fraiseexcpt.c: Likewise.
* sysdeps/riscv/rvf/fsetexcptflg.c: Likewise.
* sysdeps/riscv/rvf/ftestexcept.c: Likewise.
* sysdeps/riscv/rvf/get-rounding-mode.h: Likewise.
* sysdeps/riscv/rvf/math_private.h: Likewise.
* sysdeps/riscv/rvf/s_ceilf.c: Likewise.
* sysdeps/riscv/rvf/s_copysignf.c: Likewise.
* sysdeps/riscv/rvf/s_finitef.c: Likewise.
* sysdeps/riscv/rvf/s_floorf.c: Likewise.
* sysdeps/riscv/rvf/s_fmaf.c: Likewise.
* sysdeps/riscv/rvf/s_fmaxf.c: Likewise.
* sysdeps/riscv/rvf/s_fminf.c: Likewise.
* sysdeps/riscv/rvf/s_fpclassifyf.c: Likewise.
* sysdeps/riscv/rvf/s_isinff.c: Likewise.
* sysdeps/riscv/rvf/s_isnanf.c: Likewise.
* sysdeps/riscv/rvf/s_issignalingf.c: Likewise.
* sysdeps/riscv/rvf/s_nearbyintf.c: Likewise.
* sysdeps/riscv/rvf/s_rintf.c: Likewise.
* sysdeps/riscv/rvf/s_roundevenf.c: Likewise.
* sysdeps/riscv/rvf/s_roundf.c: Likewise.
* sysdeps/riscv/rvf/s_truncf.c: Likewise.
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