add riscv64 architecture support
authorRich Felker <dalias@aerifal.cx>
Fri, 24 May 2019 14:46:08 +0000 (10:46 -0400)
committerRich Felker <dalias@aerifal.cx>
Fri, 14 Jun 2019 21:13:05 +0000 (17:13 -0400)
commit0a48860c27a8eb291bcc7616ea9eb073dc660cab
tree6021d6d18943d7b883e38e2f3e20a3b81d916fc5
parent5fc43798250255455e4b5f9b08000bd3102274d9
add riscv64 architecture support

Author: Alex Suykov <alex.suykov@gmail.com>
Author: Aric Belsito <lluixhi@gmail.com>
Author: Drew DeVault <sir@cmpwn.com>
Author: Michael Clark <mjc@sifive.com>
Author: Michael Forney <mforney@mforney.org>
Author: Stefan O'Rear <sorear2@gmail.com>

This port has involved the work of many people over several years. I
have tried to ensure that everyone with substantial contributions has
been credited above; if any omissions are found they will be noted
later in an update to the authors/contributors list in the COPYRIGHT
file.

The version committed here comes from the riscv/riscv-musl repo's
commit 3fe7e2c75df78eef42dcdc352a55757729f451e2, with minor changes by
me for issues found during final review:

- a_ll/a_sc atomics are removed (according to the ISA spec, lr/sc
  are not safe to use in separate inline asm fragments)

- a_cas[_p] is fixed to be a memory barrier

- the call from the _start assembly into the C part of crt1/ldso is
  changed to allow for the possibility that the linker does not place
  them nearby each other.

- DTP_OFFSET is defined correctly so that local-dynamic TLS works

- reloc.h LDSO_ARCH logic is simplified and made explicit.

- unused, non-functional crti/n asm files are removed.

- an empty .sdata section is added to crt1 so that the
  __global_pointer reference is resolvable.

- indentation style errors in some asm files are fixed.
51 files changed:
arch/riscv64/atomic_arch.h [new file with mode: 0644]
arch/riscv64/bits/alltypes.h.in [new file with mode: 0644]
arch/riscv64/bits/endian.h [new file with mode: 0644]
arch/riscv64/bits/fcntl.h [new file with mode: 0644]
arch/riscv64/bits/fenv.h [new file with mode: 0644]
arch/riscv64/bits/float.h [new file with mode: 0644]
arch/riscv64/bits/ipc.h [new file with mode: 0644]
arch/riscv64/bits/limits.h [new file with mode: 0644]
arch/riscv64/bits/mman.h [new file with mode: 0644]
arch/riscv64/bits/msg.h [new file with mode: 0644]
arch/riscv64/bits/posix.h [new file with mode: 0644]
arch/riscv64/bits/reg.h [new file with mode: 0644]
arch/riscv64/bits/sem.h [new file with mode: 0644]
arch/riscv64/bits/setjmp.h [new file with mode: 0644]
arch/riscv64/bits/shm.h [new file with mode: 0644]
arch/riscv64/bits/signal.h [new file with mode: 0644]
arch/riscv64/bits/socket.h [new file with mode: 0644]
arch/riscv64/bits/stat.h [new file with mode: 0644]
arch/riscv64/bits/stdint.h [new file with mode: 0644]
arch/riscv64/bits/syscall.h.in [new file with mode: 0644]
arch/riscv64/bits/user.h [new file with mode: 0644]
arch/riscv64/crt_arch.h [new file with mode: 0644]
arch/riscv64/pthread_arch.h [new file with mode: 0644]
arch/riscv64/reloc.h [new file with mode: 0644]
arch/riscv64/syscall_arch.h [new file with mode: 0644]
configure
include/elf.h
src/fenv/riscv64/fenv-sf.c [new file with mode: 0644]
src/fenv/riscv64/fenv.S [new file with mode: 0644]
src/ldso/riscv64/dlsym.s [new file with mode: 0644]
src/linux/cache.c
src/math/riscv64/copysign.c [new file with mode: 0644]
src/math/riscv64/copysignf.c [new file with mode: 0644]
src/math/riscv64/fabs.c [new file with mode: 0644]
src/math/riscv64/fabsf.c [new file with mode: 0644]
src/math/riscv64/fma.c [new file with mode: 0644]
src/math/riscv64/fmaf.c [new file with mode: 0644]
src/math/riscv64/fmax.c [new file with mode: 0644]
src/math/riscv64/fmaxf.c [new file with mode: 0644]
src/math/riscv64/fmin.c [new file with mode: 0644]
src/math/riscv64/fminf.c [new file with mode: 0644]
src/math/riscv64/sqrt.c [new file with mode: 0644]
src/math/riscv64/sqrtf.c [new file with mode: 0644]
src/setjmp/riscv64/longjmp.S [new file with mode: 0644]
src/setjmp/riscv64/setjmp.S [new file with mode: 0644]
src/signal/riscv64/restore.s [new file with mode: 0644]
src/signal/riscv64/sigsetjmp.s [new file with mode: 0644]
src/thread/riscv64/__set_thread_area.s [new file with mode: 0644]
src/thread/riscv64/__unmapself.s [new file with mode: 0644]
src/thread/riscv64/clone.s [new file with mode: 0644]
src/thread/riscv64/syscall_cp.s [new file with mode: 0644]