about summary refs log tree commit diff
path: root/arch/riscv64/bits/limits.h
diff options
context:
space:
mode:
authorRich Felker <dalias@aerifal.cx>2019-05-24 10:46:08 -0400
committerRich Felker <dalias@aerifal.cx>2019-06-14 17:13:05 -0400
commit0a48860c27a8eb291bcc7616ea9eb073dc660cab (patch)
tree6021d6d18943d7b883e38e2f3e20a3b81d916fc5 /arch/riscv64/bits/limits.h
parent5fc43798250255455e4b5f9b08000bd3102274d9 (diff)
downloadmusl-0a48860c27a8eb291bcc7616ea9eb073dc660cab.tar.gz
musl-0a48860c27a8eb291bcc7616ea9eb073dc660cab.tar.xz
musl-0a48860c27a8eb291bcc7616ea9eb073dc660cab.zip
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 'arch/riscv64/bits/limits.h')
-rw-r--r--arch/riscv64/bits/limits.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/riscv64/bits/limits.h b/arch/riscv64/bits/limits.h
new file mode 100644
index 00000000..0226588c
--- /dev/null
+++ b/arch/riscv64/bits/limits.h
@@ -0,0 +1,7 @@
+#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define LONG_BIT 64
+#endif
+
+#define LONG_MAX  0x7fffffffffffffffL
+#define LLONG_MAX  0x7fffffffffffffffLL