sail - Formal specification language for ISAs

Age	Commit message (Collapse)	Author
2018-05-04	Rewrite constant nexps in specs	Brian Campbell
	(from Thomas)
2018-05-04	Add support for top-level values to monomorphisation singleton rewrite	Brian Campbell

2018-05-04	Fix mono cast introduction to avoid a checking to inference change	Brian Campbell
	Adds return type to pattern so that the original function body is still type checked, rather than switching to type inference which may fail.
2018-05-04	Start updating monomorphisation	Brian Campbell
	+ add additional lexp + update aarch64 mono demo source - still needs support for tyvars from assignments in dependency analysis
2018-05-04	Rename type vars in Coq backend when they clash with identifiers	Brian Campbell
	Add value-only version of compute_{pat,exp}_alg to help Experiment with adding equality constraints between type vars and args in Coq output
2018-05-04	Basic Coq constraints	Brian Campbell

2018-05-03	Fix a typo in sret decode and privilege checks in xret.	Prashanth Mundkur

2018-05-03	Add implementation of sfence with a fixme note.	Prashanth Mundkur

2018-05-03	Fix a bug in privilege transition, add better transition logging.	Prashanth Mundkur

2018-05-03	Implement wfi, and cleanup handling illegal operations.	Prashanth Mundkur

2018-05-03	Fix interrupt dispatch, improve execution logs, cleanup unused bits.	Prashanth Mundkur

2018-05-03	Simplify the top-level execute loop using the step function.	Prashanth Mundkur

2018-05-03	Fix up interrupt and exception dispatch.	Prashanth Mundkur

2018-05-03	Implement fetch to properly handle RVC and address translation, and add a ↵	Prashanth Mundkur
	step function for execution.
2018-05-03	Flow typing and l-expression changes for ASL parser	Alasdair Armstrong
	1. Experiment with allowing some flow typing on mutable variables for translating ASL in a more idiomatic way. I realise after updating some of the test cases that this could have some problematic side effects for lem translation, where mutable variables are translated into monadic code. We'd need to ensure that whatever flow typing happens for mutable variables also works for monadic code, including within transformed loops. If this doesn't work out some of these changes may need to be reverted. 2. Make the type inference for l-expressions a bit smarter. Splits the type checking rules for l-expressions into a inference part and a checking part like the other bi-directional rules. Should not be able to type check slightly more l-expresions, such as nested vector slices that may not have checked previously. The l-expression rules for vector patterns should be simpler now, but they are also more strict about bounds checking. Previously the bounds checks were derived from the corresponding operations that would appear on the RHS (i.e. LEXP_vector would get it's check from vector_access). This meant that the l-expression bounds checks could be weakend by weakening the checks on those operations. Now this is no longer possible, there is a -no_lexp_bounds_check option which turns of bounds checking in l-expressions. Currently this is on for the generated ARM spec, but this should only be temporary. 3. Add a LEXP_vector_concat which mirrors P_vector_concat except in l-expressions. Previously there was a hack that overloaded LEXP_tup for this to translate some ASL patterns, but that was fairly ugly. Adapt the rewriter and other parts of the code to handle this. The rewriter for lexp tuple vector assignments is now a rewriter for vector concat assignments. 4. Include a newly generated version of aarch64_no_vector 5. Update the Ocaml test suite to use builtins in lib/
2018-05-03	Fix duopod with latest riscv prelude	Alasdair Armstrong

2018-05-03	Add typing rule for checking tuples as well as inferring them	Alasdair Armstrong
	Removes some patches in ASL parser Allow immutable variables to shadow mutable ones. This is useful for translating ASL.
2018-05-03	Fix interpreter messages for failing asserts	Alasdair Armstrong

2018-05-03	Hook in address translation for stores and atomics.	Prashanth Mundkur

2018-05-03	Log csr writes in the execution log.	Prashanth Mundkur

2018-05-03	Work in progress on the coq backend	Brian Campbell
	- originally based on the Lem backend - added externs to some of the library files and tests - added wildcard to extern valspecs in parser - added Type_check.get_val_spec_orig to return the valspec with the function's original names for bound type variables Note that most of the tests will fail currently
2018-05-02	Hook in address translation for loads.	Prashanth Mundkur

2018-05-02	Finish up Sv39 address translation.	Prashanth Mundkur

2018-05-02	Tick cycle counter in execute loop.	Prashanth Mundkur

2018-05-02	Fix printing of csr immediates.	Prashanth Mundkur

2018-05-02	Fix typo in riscv model.	Prashanth Mundkur

2018-05-01	cheri128: remove unnecessary xor of E with 48. The zeroing of E in memory is ↵	Robert Norton
	achieved by xoring with null_cap_bits so this was only affecting register representation.
2018-05-01	cheri256: minor optimisation -- factor out null_cap_bits as top level let.	Robert Norton

2018-05-01	cheri256: switch to using absolute address (cursor) instead of offset ↵	Robert Norton
	(relative) representation in capability registers, making register and memory format the same and slightly simplifying code. Next step: use struct representation in registers eliminating many conversions between struct and bits?
2018-05-01	remove unneeded commented out code.	Robert Norton

2018-05-01	Implement new CGetAddr instruction. Note that we should possibly rename ↵	Robert Norton
	function getCapCursor to getCapAddr.
2018-04-30	Make make uninstall a bit safer...	Robert Norton

2018-04-27	Cheri ISA change in CTestSubset -- ignore sealed bits when testing for ↵	Robert Norton
	subset (aids garbage collection).
2018-04-26	Add riscv SV39 page-table walk.	Prashanth Mundkur

2018-04-26	Ensure riscv interrupt delegation does not reduce current privilege.	Prashanth Mundkur

2018-04-26	Fix bug introduced in alignment check.	Prashanth Mundkur

2018-04-26	Lem: Add Size class annotations for nested bitvector types	Thomas Bauereiss

2018-04-26	Initial support for faults of writes to physical addresses.	Prashanth Mundkur

2018-04-26	Initial support for faults of reads to physical addresses.	Prashanth Mundkur

2018-04-26	Fix bug in rewriting of loops	Thomas Bauereiss
	Take into account existential types when determining bounds for the loop variable
2018-04-26	Avoid adding explicit type annotations with generated type variables	Thomas Bauereiss

2018-04-26	Make effect propagation in rewriter more efficient	Thomas Bauereiss
	Use non-recursive fix_eff_exp instead of recursive propagate_exp_effect, assuming that the effects of subexpressions have already been fixed by the recursive calls of the rewriter.
2018-04-26	Lazily evaluate debugging messages	Thomas Bauereiss
	This is meant to increase performance; for example, generating debug messages that include pretty-printed expressions can be very costly, if those expressions are complex (e.g. deeply nested E_internal_plet nodes representing a long sequence of monadic binds).
2018-04-26	Add a new SHARE_DIR argument to use when doing opam build. For non-opam ↵	Robert Norton
	builds this defaults to git root.
2018-04-26	Make ocamlbuild assume lem is in path instead of relative to current directory.	Robert Norton

2018-04-26	Fix apply_header target with location of LICENSE file.	Robert Norton

2018-04-26	Opam packaging: add install and uninstall targets and code to find various ↵	Robert Norton
	files in installed location.
2018-04-26	Remove obsolete mips/cheri rules from sail makefile. These are now built in ↵	Robert Norton
	their respective subdirectories.
2018-04-25	Simplify subtyping check	Alasdair Armstrong
	This should make subtyping work better for tuples containing constrained types. Removes the intermediate type-normal-form representation from the subtyping check, and replaces it with Env.canonicalize from the canonical branch.
2018-04-25	Start working on documentation	Alasdair Armstrong