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2014-04-08Reduce redundant information in ASTKathy Gray
2014-04-04Cosmetic improvements (statistics, --quiet)Gabriel Kerneis
2014-04-04Improve Power executionGabriel Kerneis
- Move FDE loop to the OCaml side of the Power model (avoid leaking memory due to lack of TCO in interpreter) - Display cycle count - Check the value of CIA at the end of each cycle and stop if it is equal to the initial value of LR, returning the value in GPR3.
2014-04-03Implement some arithmetic operationsGabriel Kerneis
2014-04-03Re-index vector slicesGabriel Kerneis
- increasing vector slices are re-indexed from 0 - decreasing vector slices are re-indexed towards 0 I don't know how the type system handles this currently, but it is essential for the correctness of execution.
2014-04-03Implement bitwise library operationsGabriel Kerneis
2014-04-03Typeclass Eq for valuesGabriel Kerneis
Again, this is necessary to compare big_int
2014-04-02Solve more constraints; fix up test suite bugs uncovered by solving more ↵Kathy Gray
constraints. Clean up Lem output a little for readability while debugging.
2014-04-02eq and neq return bit, not boolGabriel Kerneis
2014-04-02Fix EXTS and signedness of to_numGabriel Kerneis
2014-04-01Allow negative "nat" internallyGabriel Kerneis
to_num and to_vec probably still need to be fixed
2014-03-31Extend constraint checking, and add casts for base of a vector shifts (i.e. ↵Kathy Gray
from 0 to 32 etc, doesn't change order yet.).
2014-03-20Remove work-around from interpreter, move it to power.sailGabriel Kerneis
Two bugs are worked-around here: - missing cast to nat when a vector is wrapped in exts (exts is a no-op currently anyway, so we are discarding it) - missing cast (due to limited type-inference) in one if branch: type given explicitly.
2014-03-20Workaround missing casts for external callsGabriel Kerneis
This patch should be reverted when the interpreter is fixed. The first instruction of main.bin is now executed. The second one fails, seemingly because of a similar missing cast issue (external function add receives register GPR1 as value).
2014-03-19Fix endiannessGabriel Kerneis
This will never end…
2014-03-19Fix bug when reading register through a castKathy Gray
2014-03-17Revert broken vector handlingGabriel Kerneis
2014-03-14Support regbits read and writeGabriel Kerneis
No support for non-contiguous writes.
2014-03-14Pretty-print subreg correctlyGabriel Kerneis
2014-03-12Remove automagic register initializationGabriel Kerneis
2014-03-12Correctly type checking and interpreting accesses of register "fields". ↵Kathy Gray
Register-reading action isn't reading the subreg correctly still (seems to be making up a value though). Corrects but to vectors.sail and power.sail use of plus. (A new bug in power.sail is exposed using a binary operator with one value)
2014-03-11More work on interpreter and Power modelGabriel Kerneis
2014-03-11Confusion between first index and vector lengthGabriel Kerneis
2014-03-11Increase support for register "field" accesses; there is now a bug in how ↵Kathy Gray
run_interp handles SubReg register forms.
2014-03-07Treat registers as values when not being actively read or written to, so ↵Kathy Gray
that we can have a vector of registers for example. Also, register types can be explicitly referenced.
2014-03-04More polymorphism for additionGabriel Kerneis
2014-03-03Fixing assorted bugs. Adding ability to put a type on the identifier being ↵Kathy Gray
assigned to in assignments.
2014-03-01Fix printing bug on vector slicing that caused only one element to ever be ↵Kathy Gray
sliced
2014-02-28Fix endiannessGabriel Kerneis
In fact, increasing order is big-endian, not little-endian. This is good news for us, because it means we do not need any switch for the POWER spec.
2014-02-28Fetch-decode POWER interpreterGabriel Kerneis
Many limitations and bugs currently, but loads binary and decodes opcodes correctly (using endianness hacks). Disabled in the default test suite (but still compiled), run "make test_power" to try it.
2014-02-28Load ELF sections to virtual memory addressesGabriel Kerneis
Roughly 110KB/s (~5 seconds to load "hello" test).
2014-02-27Fix error to constructor pattern matchingKathy Gray
2014-02-27Partial fix for to_vec_inc/to_vec_decGabriel Kerneis
Lem's word library does some dark magic because of its assumption that words represent signed integers. Therefore, it is unreliable to truncate words, as well as to use the internal representation. boolListFrombitSeq seems safe for our purposes, though (provided the bitseq has been created with an infinite length from a positive integer).
2014-02-27More flexible test executionGabriel Kerneis
2014-02-27Merge branch 'interp_typed'Kathy Gray
Conflicts: src/lem_interp/interp.lem src/lem_interp/run_interp.ml
2014-02-26Get interpreter working using types, no added functionality yetKathy Gray
2014-02-26Debug and fix memory multi-bytes memory writesGabriel Kerneis
2014-02-26Fix vector slicingGabriel Kerneis
2014-02-25Manage annotKathy Gray
2014-02-25First step of using type information in interpreter. Reading and writing ↵Kathy Gray
plain registers supported; memory reading and writing is broken.
2014-02-21Add type annotations to lem grammar, including printing out the annotated ↵Kathy Gray
ast, and extending the interpreter to expect annotations. Annotations and locations are still not used by the interpreter.
2014-02-18Put a plaster on bug for finding memory reading/writing operationsKathy Gray
2014-02-18Remove spurious add infixGabriel Kerneis
2014-02-18Report failing tests and return 1 in case of errorGabriel Kerneis
2014-02-18Improve interpreter pretty-printingGabriel Kerneis
2014-02-18Adding explicit order to for loopsKathy Gray
2014-02-14Attempt multi-byte memory read and writeGabriel Kerneis
Test seems to fail for some reason, probably endianess and off-by-one bugs all over the place. Needs debugging code to monitor memory updates and display bitvectors in a compact way.
2014-02-14Write slice to memoryGabriel Kerneis
I'm not sure whether this is useful at all. It is currently a bit broken when subrange is not in the "correct" order. Presumably the typechecker should catch this? I'm not quite sure what the intended semantics should be. Probably the same bug occurs with register slices too.
2014-02-14Fix infinite loop bug, and test1.sail type checking bugKathy Gray
2014-02-14Register slice writeGabriel Kerneis