mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-06-06 14:13:23 +00:00
Code Activity

cxxrtl: use CXXRTL_ASSERT for RTL contract violations instead of assert.

Browse source 
RTL contract violations and C++ contract violations are different:
the former depend on the netlist and will never violate memory safety
whereas the latter may. When loading a CXXRTL simulation into another
process, RTL contract violations should generally not crash it, while
C++ contract violations should.
This commit is contained in:
whitequark 2020-12-02 19:41:00 +00:00
parent 7b0cfd5c36
commit aa0a15a42c
2 changed files with 16 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

14
backends/cxxrtl/cxxrtl.h
View file

@ -53,6 +53,20 @@
#define CXXRTL_ALWAYS_INLINE inline
#endif
// CXXRTL uses assert() to check for C++ contract violations (which may result in e.g. undefined behavior
// of the simulation code itself), and CXXRTL_ASSERT to check for RTL contract violations (which may at
// most result in undefined simulation results).
//
// Though by default, CXXRTL_ASSERT() expands to assert(), it may be overridden e.g. when integrating
// the simulation into another process that should survive violating RTL contracts.
#ifndef CXXRTL_ASSERT
#ifndef CXXRTL_NDEBUG
#define CXXRTL_ASSERT(x) assert(x)
#else
#define CXXRTL_ASSERT(x)
#endif
#endif
namespace cxxrtl {
// All arbitrary-width values in CXXRTL are backed by arrays of unsigned integers called chunks. The chunk size