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| author | Rich Felker <dalias@aerifal.cx> | 2019-05-24 10:46:08 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2019-06-14 17:13:05 -0400 |
| commit | 0a48860c27a8eb291bcc7616ea9eb073dc660cab (patch) | |
| tree | 6021d6d18943d7b883e38e2f3e20a3b81d916fc5 /src/signal/riscv64 | |
| parent | 5fc43798250255455e4b5f9b08000bd3102274d9 (diff) | |
| download | musl-0a48860c27a8eb291bcc7616ea9eb073dc660cab.zip musl-0a48860c27a8eb291bcc7616ea9eb073dc660cab.tar.gz musl-0a48860c27a8eb291bcc7616ea9eb073dc660cab.tar.bz2 | |
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.
Diffstat (limited to 'src/signal/riscv64')
| -rw-r--r-- | src/signal/riscv64/restore.s | 8 | ||||
| -rw-r--r-- | src/signal/riscv64/sigsetjmp.s | 23 |
2 files changed, 31 insertions, 0 deletions
diff --git a/src/signal/riscv64/restore.s b/src/signal/riscv64/restore.s new file mode 100644 index 0000000..40012c7 --- /dev/null +++ b/src/signal/riscv64/restore.s @@ -0,0 +1,8 @@ +.global __restore +.type __restore, %function +__restore: +.global __restore_rt +.type __restore_rt, %function +__restore_rt: + li a7, 139 # SYS_rt_sigreturn + ecall diff --git a/src/signal/riscv64/sigsetjmp.s b/src/signal/riscv64/sigsetjmp.s new file mode 100644 index 0000000..f9bc162 --- /dev/null +++ b/src/signal/riscv64/sigsetjmp.s @@ -0,0 +1,23 @@ +.global sigsetjmp +.global __sigsetjmp +.type sigsetjmp, %function +.type __sigsetjmp, %function +sigsetjmp: +__sigsetjmp: + bnez a1, 1f + tail setjmp +1: + + sd ra, 208(a0) + sd s0, 224(a0) + mv s0, a0 + + call setjmp + + mv a1, a0 + mv a0, s0 + ld s0, 224(a0) + ld ra, 208(a0) + +.hidden __sigsetjmp_tail + tail __sigsetjmp_tail |