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* Expand the responsefiles earlierBernhard Schommer2019-05-102-4/+4
| | | | | | | | | * Move the expansion of response files to module Commandline, during the initialization of `Commandline.argv`. This way we're sure it's done exactly once. * Make `Commandline.argv` a `string array` instead of a `string array ref`. We no longer need to update it after initialization! * Improve reporting of errors during expansion of response files.
* Move Z definitions out of Integers and into ZbitsXavier Leroy2019-04-263-20/+21
| | | | | | | | | | The module Integers.Make contained lots of definitions and theorems about Z integers that were independent of the word size. These definitions and theorems are useful outside Integers.Make, but it felt unnatural to fetch them from modules Int or Int64. This commit moves the word-size-independent definitions and theorems to a new module, lib/Zbits.v, and fixes their uses in the code base.
* lib/Coqlib.v: remove defns about multiplication, division, modulusXavier Leroy2019-04-235-20/+22
| | | | | Instead, use definitions and lemmas from the Coq standard library (ZArith, Znumtheory).
* Replace nat_of_Z with Z.to_natXavier Leroy2019-04-235-17/+17
| | | | | | | Use Z.to_nat theorems from the standard Coq library in preference to our theorems in lib/Coqlib.v. Simplify lib/Coqlib.v accordingly.
* Print only debug info for printed functions.Bernhard Schommer2019-04-161-1/+2
| | | | | | | | | | | Functions that are removed from the compilation unit, for example inline functions without extern, should not produce debug information. This commit reuses the mechanism used for variables in order to track additionally the printed functions. Therefore the printed variable versions are exchanged for a printed symbol version. Bug 26234
* Typo in comment about Ijumptable in RTL.vAlix Trieu2019-04-151-1/+1
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* Fix typo in section name in Selectionproof.v Alix Trieu2019-04-151-2/+2
| | | SEL_SWITH_INT -> SEL_SWITCH_INT
* RTLgenproof: destruct too deepXavier Leroy2019-03-251-2/+2
| | | | | | | `external_call_mem_extends` returns a conjunction of 4 properties, but the destruct pattern was 5 level deep. (Reported by Jeremie Koenig in pull request #278.)
* Minor simplifications in two proofs. (#280)Vincent Laporte2019-03-251-2/+2
| | | Preparation for Coq PR 9725 that may make `eauto` stronger.
* Make the checker happy (#272)Vincent Laporte2019-02-121-6/+8
| | | Previously, the coqchk type- and proof-checker would take forever on some of CompCert's modules. This commit makes minimal changes to the problematic proofs so that all of CompCert can be checked with coqchk. Tested with Coq versions 8.8.2 and 8.9.0.
* Simplified code. Bug 24067Bernhard Schommer2018-09-121-8/+8
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* Generate a nop instruction after some ais annotations (#137)Bernhard Schommer2018-09-122-3/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | * Generate a nop instruction after ais annotations. In order to prevent the merging of ais annotations with following Labels a nop instruction is inserted, but only if the annotation is followed immediately by a label. The insertion of nop instructions is performed during the expansion of builtin and pseudo assembler instructions and is processor independent, by inserting a __builtin_nop built-in. * Add Pnop instruction to ARM, RISC-V, and x86 ARM as well as RISC-V don't have nop instructions that can be easily encoded by for example add with zero instructions. For x86 we used to use `mov X0, X0` for nop but this may not be as efficient as the true nop instruction. * Implement __builtin_nop on all supported target architectures. This builtin is not yet made available on the C side for all architectures. Bug 24067
* Various improvements in the wording of diagnostics.Michael Schmidt2018-08-021-4/+4
| | | | | | Fix various typos in diagnostic messages and unified wording and capitalization. Bug 23850
* Treat Outgoing stack slots as caller-save in LTL/Linear semantics (#237)Xavier Leroy2018-06-176-93/+145
| | | | | | | | | | | | | | | | | | | * Outgoing stack slots are set to Vundef on return from a function call, modeling the fact that the callee could write into those stack slots. (CompCert-generated code does not do this, but code generated by other compilers sometimes does.) * Adapt Stackingproof to this new semantics. This requires tighter reasoning on how Linear's locsets are related at call points and at return points. * Most of this reasoning was moved from Stackingproof to Lineartyping, because it can be expressed purely in terms of the Linear semantics, and tracked through the wt_state predicate. * Factor out and into Conventions.v: the notion of callee-save locations, the "agree_callee_save" predicate, and useful lemmas on Locmap.setpair. Now the same "agree_callee_save" predicate is used in Allocproof and in Stackingproof.
* Model external calls as destroying all caller-save registersXavier Leroy2018-06-018-8/+79
| | | | | | | | | | The semantics of external function calls in LTL, Linear, Mach and Asm now consider that all caller-save registers are set to Vundef by the call. This models that fact that the external function can modify those registers arbitrarily. Update the proofs of the Allocation, Tunneling, Stacking and Asmgen passes accordingly.
* Add newline directly on list in annot.Bernhard Schommer2018-03-132-4/+7
| | | | | | | This should avoid cluttering the assembler output with .ascii "\n" lines if the annotation ends with a string and make for a better readability. Bug 23169
* Print size argument of Init_space as Z not as int32Xavier Leroy2018-03-131-1/+1
| | | | | Init_space has an argument of type Z and it can exceed the range of a 32-bit integer. Reported by Frédéric Besson.
* Introduce more brackets for register annotation.Bernhard Schommer2018-03-121-4/+5
| | | | | | It seems necessary that the mulitplication for the high part of split registers is put into brackets. Bug 23169
* Do not use "Require" inside sections (#224)Xavier Leroy2018-03-121-3/+1
| | | | | | This will soon be deprecated by Coq. Manual merge of pull request #224 by vbgl. Closes: #224
* Added seperator in warning msg. Bug 23179Bernhard Schommer2018-03-091-1/+1
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* Do not use default printer for variable names.Bernhard Schommer2018-03-091-2/+8
| | | | | | Printing variable names with the default expression printer results in newlines in the outputed error message. Bug 23169
* Perform quoting for json.Bernhard Schommer2018-03-081-1/+8
| | | | | | The strings for json need quoting of special characters such as \" and \\. Bug 22438
* Print symbols as symbols.Bernhard Schommer2018-03-082-4/+26
| | | | | | This allows us to replacing them by their address in valex and additionally checking them. Bug 22438
* Improve error messages.Bernhard Schommer2018-03-071-16/+14
| | | | | | | | Include the format specifier in error message when available in order to make it easier to spot the broken ais parameter. Futhermore introduce a new warning for unused ais parameters. Bug 22464
* Reword error message. Fix 22464Bernhard Schommer2018-03-071-2/+2
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* Improve wording.Bernhard Schommer2018-03-071-1/+1
| | | | | Mention that it is a global memory cell. Fix 22464
* Improve and simplify error messages.Bernhard Schommer2018-03-072-31/+54
| | | | | | | | The checks on the argument and format arguments are now performed during C2C translation by calling the validate_ais_annotations function and result in an error instead of a warning in the backend to be more consistent with the rest of the builtin functions.
* Reactivated and improved ais annotations.Bernhard Schommer2018-03-064-22/+204
| | | | | | | | | | | | | | | | | | The ais annotations are now handled in a separate file shared between all architectures. Also two different variants of replacements are supported, %e which expands to ais expressions and %l which also expands to an ais expression but is guaranted to be usable as l-value in the ais annotation. Otherwise the new warning is Wrong_is_parameter is generated. Also an error message is generated if floating point variables are used in ais annotations since a3 does not support them at the moment. Additionally an error message is generated for plain volatile variables used, since they will enforce a volatile load and result in the value being passed to the annotation instead of the address as other global variables.
* Change AsmToJson to be similar to other printers.Bernhard Schommer2018-01-052-1/+33
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* Resynchronize the LICENSE file and the license headers in individual files (#45)Xavier Leroy2018-01-053-0/+249
| | | | | | | | | | | Some files are dual-licensed (GPL + noncommercial license), as marked redundantly in the license headers of those files, and in the LICENSE file. OVer the years those two markings got inconsistent. This commit updates the LICENSE file and the license headers of some files so that they agree on which files are dual-licensed. Some build-related files were dual-licensed but some others were not. Fixed by dual-licensing configure, Makefile.menhir, extraction/extraction.v, */extractionMachdep.v Moved lib/Json* to backend/ because there is no need to dual-license those files, yet lib/* is dual-licensed. Plus: JsonAST did not really belong in lib/ anyway, as it depends on AST which is not in lib/
* ValueAnalysis: remove duplicate list_forall2_in_left (#212)Jérémie Koenig2018-01-031-13/+2
| | | The lemma is now in lib/Coqlib.v.
* Introduce and use C2C.atom_inline function with 3-valued resultXavier Leroy2017-12-081-3/+6
| | | | | | Instead of two Boolean tests C2C.atom_is_{no,}inline, have a single C2C.atom_inline function that returns one of the three possible values stored in the the a_inline field.
* Remove unused code. BUg 22642Bernhard Schommer2017-12-081-2/+2
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* Store the different inlining cases.Bernhard Schommer2017-12-081-2/+2
| | | | | | | In order to correctly support the noinline attribute we must store whether the function was specified with an inline specifer, had a noinline attribute or nothing. Bug 22642
* Do not inline varag functions. Bug 22642Bernhard Schommer2017-12-071-3/+3
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* Inlining of static functions which are only called once. (#37)Bernhard Schommer2017-12-073-12/+93
| | | | | | | | | New inlining heuristic for static functions. Static functions that are only called once can always be inlined, since they can be removed safely after inlining and no call prologue, epilogue, as well as register saving and needs to be generated.
* Issue #208: make value analysis of comparisons more conservative w.r.t. ↵Xavier Leroy2017-11-241-8/+12
| | | | | | | pointers (#209) Comparisons such as "(uintptr_t) &global == 0x1234" are undefined behavior in CompCert but their status in ISO C is unclear and they may occur in real-world code. Make sure they are statically analyzed as Btop.
* Remove no longer used function. Bug 22525Bernhard Schommer2017-11-102-2/+0
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* Removed no longer used function. Bug 22525Bernhard Schommer2017-11-091-1/+0
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* Use address for printing address constant. Bug 22525Bernhard Schommer2017-11-091-2/+3
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* Generalize print_init.Bernhard Schommer2017-11-091-1/+40
| | | | | | The powerpc version of print_init can be used without problems for all backends. Bug 22525
* Fix jumptable issue.Bernhard Schommer2017-11-081-2/+5
| | | | | | Instead of using reset_constants use reset_literals which avoids emptying the jumptables. Bug 22525
* Simplifiy handling of constant emmitting.Bernhard Schommer2017-11-081-6/+21
| | | | | | Instead of just storing the constants in a list, they are now stored in a hashtable. This avoids printing of duplicates. Bug 22525
* Remove superfluous function.Bernhard Schommer2017-11-062-3/+2
| | | | | The new_label function is alway equal to PrintAsmaux.new_label. Bug 22472
* Also quote \a.Bernhard Schommer2017-10-261-0/+2
| | | | | | This allows for an easier replacement of the binary address and avoids that the user specifies his own binary addresses. Bug 22468
* Merge pull request #191 from sigurdschneider/masterXavier Leroy2017-10-205-0/+5
|\ | | | | | | Ensure FunInd or Recdef is imported if functional induction is used. This is necessary for Coq 8.7.0.
| * Ensure FunInd or Recdef is imported if functional induction is usedSigurd Schneider2017-07-205-0/+5
| | | | | | | | | | | | Coq 8.7 does not load FunInd in prelude anymore, so this is necessary. Recdef exports FunInd, so if Recdef is imported, importing FunInd is not required.
* | New support for inserting ais-annotations.Bernhard Schommer2017-10-197-9/+37
| | | | | | | | | | | | | | | | | | | | | | | | The ais annotations can be inserted via the new ais variants of the builtin annotation. They mainly differe in that they have an address format specifier '%addr' which will be replaced by the adress in the binary. The implementation simply prints a label for the builtin call alongside a the text of the annotation as comment and inserts the annotation together as acii string in a separate section 'ais_annotations' and replaces the usages of the address format specifiers by the address of the label of the builtin call.
* | Distinguish between long and int for cases.Bernhard Schommer2017-10-131-7/+7
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* | Remove coq warnings (#28)Bernhard Schommer2017-09-2225-179/+179
| | | | | | | | Replace deprecated functions and theorems from the Coq standard library (version 8.6) by their non-deprecated counterparts.
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