From f642817f0dc761e51c3bd362f75b0068a8d4b0c8 Mon Sep 17 00:00:00 2001 From: Xavier Leroy Date: Fri, 28 Apr 2017 15:56:59 +0200 Subject: 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 Date: Thu Apr 13 17:36:10 2017 +0200 RISC-V port, continued Now working on Asmgen. commit 36f36eb3a5abfbb8805960443d087b6a83e86005 Author: Xavier Leroy 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. --- runtime/c/i64.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'runtime/c/i64.h') diff --git a/runtime/c/i64.h b/runtime/c/i64.h index a75214fe..3f59164b 100644 --- a/runtime/c/i64.h +++ b/runtime/c/i64.h @@ -34,12 +34,12 @@ /* Helper functions for 64-bit integer arithmetic. Reference C implementation */ -extern unsigned long long __i64_shl(unsigned long long x, int amount); -extern unsigned long long __i64_shr(unsigned long long x, int amount); -extern signed long long __i64_sar(signed long long x, int amount); +extern unsigned long long i64_shl(unsigned long long x, int amount); +extern unsigned long long i64_shr(unsigned long long x, int amount); +extern signed long long i64_sar(signed long long x, int amount); -extern unsigned long long __i64_udivmod(unsigned long long n, +extern unsigned long long i64_udivmod(unsigned long long n, unsigned long long d, unsigned long long * rp); -extern unsigned long long __i64_umulh(unsigned long long u, +extern unsigned long long i64_umulh(unsigned long long u, unsigned long long v); -- cgit