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author | Xavier Leroy <xavier.leroy@inria.fr> | 2017-04-28 15:56:59 +0200 |
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committer | Xavier Leroy <xavier.leroy@inria.fr> | 2017-04-28 16:05:51 +0200 |
commit | f642817f0dc761e51c3bd362f75b0068a8d4b0c8 (patch) | |
tree | b5830bb772611d2271c4b7d26f162d5c200dd788 /runtime/c/i64_smod.c | |
parent | 2fbdb0c45f0913b9fd8e95606c525fc5bfb3bc6d (diff) | |
download | compcert-f642817f0dc761e51c3bd362f75b0068a8d4b0c8.tar.gz compcert-f642817f0dc761e51c3bd362f75b0068a8d4b0c8.zip |
RISC-V port and assorted changes
This commits adds code generation for the RISC-V architecture, both in 32- and 64-bit modes.
The generated code was lightly tested using the simulator and cross-binutils from https://riscv.org/software-tools/
This port required the following additional changes:
- Integers: More properties about shrx
- SelectOp: now provides smart constructors for mulhs and mulhu
- SelectDiv, 32-bit integer division and modulus: implement constant propagation, use the new smart constructors mulhs and mulhu.
- Runtime library: if no asm implementation is provided, run the reference C implementation through CompCert. Since CompCert rejects the definitions of names of special functions such as __i64_shl, the reference implementation now uses "i64_" names, e.g. "i64_shl", and a renaming "i64_ -> __i64_" is performed over the generated assembly file, before assembling and building the runtime library.
- test/: add SIMU make variable to run tests through a simulator
- test/regression/alignas.c: make sure _Alignas and _Alignof are not #define'd by C headers
commit da14495c01cf4f66a928c2feff5c53f09bde837f
Author: Xavier Leroy <xavier.leroy@inria.fr>
Date: Thu Apr 13 17:36:10 2017 +0200
RISC-V port, continued
Now working on Asmgen.
commit 36f36eb3a5abfbb8805960443d087b6a83e86005
Author: Xavier Leroy <xavier.leroy@inria.fr>
Date: Wed Apr 12 17:26:39 2017 +0200
RISC-V port, first steps
This port is based on Prashanth Mundkur's experimental RV32 port and brings it up to date with CompCert, and adds 64-bit support (RV64). Work in progress.
Diffstat (limited to 'runtime/c/i64_smod.c')
-rw-r--r-- | runtime/c/i64_smod.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/runtime/c/i64_smod.c b/runtime/c/i64_smod.c index ab15b6e6..b0f2c3cd 100644 --- a/runtime/c/i64_smod.c +++ b/runtime/c/i64_smod.c @@ -38,14 +38,14 @@ /* Signed remainder */ -signed long long __i64_smod(signed long long n, signed long long d) +signed long long i64_smod(signed long long n, signed long long d) { unsigned long long un, ud, ur; int nh = n >> 32, dh = d >> 32; /* Take absolute values of n and d */ un = nh < 0 ? -n : n; ud = dh < 0 ? -d : d; - (void) __i64_udivmod(un, ud, &ur); + (void) i64_udivmod(un, ud, &ur); /* Apply sign to remainder */ return nh < 0 ? -ur : ur; } |