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New RISC-V port (#281)

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* Add RISC-V support

This patch adds support for the RISC-V architecture (https://riscv.org).

This patch has been tested using QEMU user-mode emulation and GCC 7.2.0
in the following configurations:

* -march=rv32imac -mabi=ilp32
* -march=rv32g -mabi=ilp32d
* -march=rv64imac -mabi=lp64
* -march=rv64g -mabi=lp64d

The ABI currently can be found at
https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md .

* Add RISC-V to README

* RISC-V: fix configure.host
This commit is contained in:
Stef O'Rear
2018-03-11 05:55:15 -07:00
committed by Anthony Green
parent dca52b55bc
commit 3840d49aaa
7 changed files with 739 additions and 0 deletions
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2
Makefile.am
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@@ -109,6 +109,7 @@ noinst_HEADERS = \
src/or1k/ffitarget.h \
src/pa/ffitarget.h \
src/powerpc/ffitarget.h src/powerpc/asm.h src/powerpc/ffi_powerpc.h \
src/riscv/ffitarget.h \
src/s390/ffitarget.h src/s390/internal.h \
src/sh/ffitarget.h \
src/sh64/ffitarget.h \
@@ -144,6 +145,7 @@ EXTRA_libffi_la_SOURCES = \
src/powerpc/linux64_closure.S src/powerpc/ppc_closure.S \
src/powerpc/aix.S src/powerpc/darwin.S src/powerpc/aix_closure.S \
src/powerpc/darwin_closure.S src/powerpc/ffi_darwin.c \
src/riscv/ffi.c src/riscv/sysv.S \
src/s390/ffi.c src/s390/sysv.S \
src/sh/ffi.c src/sh/sysv.S \
src/sh64/ffi.c src/sh64/sysv.S \