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* Do not generate code for "inline definitions"Bernhard Schommer2017-04-071-8/+15
| | | | | | | | | ISO C99 states that "inline defintions", functions with inline specifier that are not extern, does not provide an external definition and another compilation unit can contain an external definition. Thus in the case of non-static inline functions no code should be generated. Bug 21343
* Added gcc noinline attribute.Bernhard Schommer2017-02-191-0/+1
| | | | The noinline attribute prevents functions from inlining.
* Added unused attribute and simplified checks.Bernhard Schommer2017-02-171-1/+2
| | | | | | | | | The attribute unused can be used to indicate if a variable or parameter is unused and no warning should be emitted for it. Furthermore this commit simplifies the check by adding a generic function to traverse the program. Bug 19872
* More tweaking of module 'open'Xavier Leroy2017-02-091-8/+10
| | | | I really like to have Floats and Values opened. The other opens I can live without, but Floats.Float.zero is just wrong.
* Merge branch 'elaboration-of-attributes'Xavier Leroy2017-02-061-1/+15
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| * Preliminary support for the "noreturn" attributeXavier Leroy2017-02-061-1/+2
| | | | | | | | | | - Mark the "noreturn" attribute as related to function types, so that it is correctly attached to the nearest enclosing function type. - Add this attribute on functions declared / defined _Noreturn (with the C2011 keyword). The information is not used presently but could be useful later.
| * Refactor the classification of attributesXavier Leroy2017-02-031-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce Cutil.class_of_attribute to return the class of the given attribute: one among Attr_type attribute related to types (e.g. "aligned") Attr_struct attribute related to struct/union/enum types (e.g. "packed") Attr_function attribute related to function types (e.g. "noreturn") Attr_name attribute related to variable and function declarations (e.g. "section") Attr_unknown attribute was not declared Cutil.declare_attribute is used to associate a class to a custom attribute. Standard attributes (const, volatile, _Alignas, etc) are Attr_type. cfronted/C2C.ml: declare the few attributes that CompCert honors currently. cparser/GCC.ml: a bigger list of attributes taken from GCC, for reference only.
| * Revised elaboration of attributesXavier Leroy2017-01-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The treatment of attributes in the current CompCert is often surprising. For example, attribute(xxx) char * x; is parsed as "x is a pointer to a (char modified by attribute "xxx")", while for most attributes (e.g. section attributes) the expected meaning is "x, modified by attribute "xxx", has type pointer to char". CompCert's current treatment comes from the fact that attributes are processed very much like the standard type modifiers `const` and `volatile`, i.e. const char * x; is really "x is a pointer to a const char", not "x is a const pointer to char". This experiment introduces a distinction between type-related attributes (which include the standard modifiers `const` and `volatile`) and other attributes. The other, non-type-related attributes are "floated up" during elaboration so that they apply to the variable or function being declared or defined. In the examples above, attribute(xxx) char * x; // "attribute(xxx)" applies to "x" const char * x; // "const" applies to "char" This may be a step in the right direction but is not the final story. In particular, the `packed` attribute is special-cased when applied to `struct`, like it was before, and future attributes concerning calling conventions would need to be floated up to function types but not higher than that.
* | Cleanup opensBernhard Schommer2017-02-061-69/+62
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* Simplified C2C.error.Bernhard Schommer2017-01-181-16/+14
| | | | | | | Instead of just accepting a string the function is changed to accept a format string. This removes a lot of artificial sprintfs in calls to the functions. Bug 19872
* C2C: revise typing and translation of __builtin_memcpy_alignedXavier Leroy2016-11-171-12/+16
| | | | | | | | | | | | | | | | | | | | This fixes two issues: 1- The 'size' and 'alignment' arguments of __builtin_memcpy_aligned were declared with type 'unsigned int', which is not good for a 64-bit platform. 2- The corresponding arguments were not cast to type 'unsigned int', causing compilation errors if e.g. the size argument is a 64-bit integer. (Reported by Michael Schmidt.) The fix: 1- Evaluate the 3rd and 4th arguments at type size_t 2- Support both Vint and Vlong as results of this evaluation 3- Declare these arguments with type 'unsigned long'. Supporting work: in lib/Camlcoq.ml, add Z.modulo and Z.is_power2 operations. Concerning part 3 of the fix, type size_t would be better for future platforms where size_t is bigger than unsigned long, but some more work is needed to delay the evaluation of C2C.builtins_generic to after Cutil.size_t_ikind() is stable, or, equivalently, to evaluate the cparser/ machine configuration before C2C initializes.
* C2C: wrong translation of 'switch' over arguments of type 'long' if 'long' ↵Xavier Leroy2016-11-171-4/+5
| | | | | | | is 64 bits It was wrongly assumed that 'long' is 32 bits. (Reported by Michael Schmidt.)
* fix va_arg for pointer types on 64bit targetMichael Schmidt2016-11-081-1/+7
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* extend constant check for builtin_memcpy_aligned (bug 20320)Michael Schmidt2016-11-071-2/+2
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* extend constant check for builtin_memcpy_aligned (bug 20320)Michael Schmidt2016-11-071-0/+2
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* Merge pull request #145 from AbsInt/64Xavier Leroy2016-10-271-32/+38
|\ | | | | | | Support for 64-bit target processors + support for x86 in 64-bit mode
| * Turn 64-bit integer division and modulus by constants into multiply-highXavier Leroy2016-10-041-0/+8
| | | | | | | | | | | | This trick was already implemented for 32-bit integer division and modulus. Here we extend it to the 64-bit case. For 32-bit target processors, the runtime library must implement 64-bit multiply-high (signed and unsigned). Tentative implementations are provided for IA32 and PowerPC, but need testing.
| * Support for 64-bit architectures: generic supportXavier Leroy2016-10-011-32/+30
| | | | | | | | | | | | | | | | | | | | | | - Introduce Archi.ptr64 parameter. - Define module Ptrofs of integers as wide as a pointer (64 if Archi.ptr64, 32 otherwise). - Use Ptrofs.int as the offset type for Vptr values and anywhere pointer offsets are manipulated. - Modify Val operations that handle pointers (e.g. Val.add, Val.sub, Val.cmpu) so that in 64-bit pointer mode it is the "long" operation (e.g. Val.addl, Val.subl, Val.cmplu) that handles pointers. - Update the memory model accordingly. - Modify C operations that handle pointers (e.g. addition, subtraction, comparisons) accordingly. - Make it possible to turn off the splitting of 64-bit integers into pairs of 32-bit integers. - Update the compiler front-end and back-end accordingly.
* | implement checks for parameters of '__builtin_memcpy_aligned' (bug 20222)Michael Schmidt2016-10-191-4/+4
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* | implement checks for parameters of '__builtin_memcpy_aligned' (bug 20222)Michael Schmidt2016-10-191-3/+6
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* Improved error messages for wrong vararg calls.Bernhard Schommer2016-09-231-2/+7
| | | | | | Now "expected at least %d" instead of "expected %d". Also improved error message for __builtin_debug. Bug 19872
* Catch case of zero in builtin debug.Bernhard Schommer2016-09-221-2/+2
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* Readded warning about ignored volatile. Bug 18004Bernhard Schommer2016-08-311-1/+1
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* Added missing literal. Bug 18004Bernhard Schommer2016-08-311-1/+1
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* Fixed typos.Bernhard Schommer2016-08-311-8/+8
| | | | | | Removed duplicated of, changed string to string literal for wording than the C standard. Bug 18004
* bug 18004, fix some typos/grammarMichael Schmidt2016-08-301-1/+1
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* Merge branch 'master' into advanced-diagnosticsBernhard Schommer2016-08-291-1/+1
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| * Simplify test. Bug 19629Bernhard Schommer2016-08-251-4/+1
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| * Test for illegal first argument in __builtin_debug.Bernhard Schommer2016-08-251-2/+6
| | | | | | | | | | | | | | The test is extended for integer constants smaller than 0. Also the default constant used for the error is no longer 0 since this is not a positive number. Bug 19629
* | Classified all warnings and added various options.Bernhard Schommer2016-07-291-33/+32
|/ | | | | | | | | | Now each warning either has a name and can be turned on/off, made into an error,etc. or is a warning that always will be triggered. The message of the warnings are similar to the ones emited by gcc/clang and all fit into one line. Furthermore the diagnostics are now colored if colored output is available. Bug 18004
* Remove code that will is deprecated in ocaml 4.03Bernhard Schommer2016-06-211-1/+1
| | | | | | | | Most of the code can be String.uppercase usages can either be replaced by a more specialized version of coqstring_of_camlstring (which is also slightly more effecient) or by specialized checks that reject wrong code earlier. Bug 19187
* Merge branch 'master' into cleanupBernhard Schommer2016-03-211-2/+4
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| * Add support for EF_runtime externalsXavier Leroy2016-03-061-0/+2
| | | | | | | | Also: in Events, use Senv.equiv to state invariance wrt changes of global envs.
* | Removed not needed env.Bernhard Schommer2016-03-151-5/+5
| | | | | | | | | | | | The functions for naming string and wstring literals no longer need an env. Bug 18394
* | Deactivate warning 27 and added back removed code.Bernhard Schommer2016-03-151-27/+27
| | | | | | | | | | | | The code was mostly there for documentation effort. So warning 27 is deactivated again. Bug 18349
* | Revert "Removed unused parameter from is_small/rel_data."Bernhard Schommer2016-03-151-3/+3
| | | | | | | | This reverts commit bac2a0854ea51217690bc6f225da62053ed7ac06.
* | Removed unused parameter from is_small/rel_data.Bernhard Schommer2016-03-111-3/+3
| | | | | | | | | | | | The ofs parameter is no longer used. Adopted the proofs and ml code using it. Bug 18394
* | Code cleanup.Bernhard Schommer2016-03-101-73/+71
|/ | | | | | Removed some unused variables, functions etc. and resolved some problems which occur if all warnings except 3,4,9 and 29 are active. Bug 18394.
* Revise and simplify the -fstruct-return and -fstruct-passing options.Xavier Leroy2015-12-081-11/+18
| | | | | | - Rename '-fstruct-return' into '-fstruct-passing', because this emulation affects both function result passing and function argument passing. Keep '-fstruct-return' as a deprecated synonymous for '-fstruct-passing' - Remove the ability to change the ABI for struct passing via the '-fstruct-passing=<abi>' and '-fstruct-return=<abi>' command-line flags. This was more confusing than useful. - Produce an error if a struct/union is passed as function argument and '-fstruct-passing' is not set. This used to be supported, using CompCert's default ABI for passing struct arguments. However, this default ABI does not match any of the standard ABIs of our target platforms, so it is better to reject than to silently produce ABI-incompatible code.
* Handle large static initializers for global arraysXavier Leroy2015-11-091-5/+5
| | | | Use tail-recursive operations to implement transformations on initializers for global arrays. This way, very large static initializers no longer cause stack overflows at compile-time.
* Fix for switch was to eager.Bernhard Schommer2015-11-061-6/+8
| | | | | | We should not remove any debug stmt inside of the cases. We should just not warn in the case that init is only debugcalls. Bug 17850
* Remove debug stmts during grouping of switch.Bernhard Schommer2015-11-061-3/+5
| | | | | | | Debug statements introduced during the translation result in warnings when they are introduced at the head of the switch. Since they are not used and the warning is not necessary we can remove them before. Fix 17580.
* Merge remote-tracking branch 'origin/master' into named-externalsBernhard Schommer2015-10-201-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arm/TargetPrinter.ml backend/CMparser.mly backend/SelectLongproof.v backend/Selectionproof.v cfrontend/C2C.ml checklink/Asm_printers.ml checklink/Check.ml checklink/Fuzz.ml common/AST.v debug/DebugInformation.ml debug/DebugInit.ml debug/DwarfPrinter.ml debug/DwarfTypes.mli debug/Dwarfgen.ml exportclight/ExportClight.ml ia32/TargetPrinter.ml powerpc/Asm.v powerpc/SelectOpproof.v powerpc/TargetPrinter.ml
| * bug 17392: remove trailing whitespace in source filesMichael Schmidt2015-10-141-38/+38
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| * Unified function for adding the atom identifier.Bernhard Schommer2015-10-121-2/+2
| | | | | | | | | | | | | | Instead of defining two functions for adding the mapping from atom to debug id we use one function which then sets the corresponding values. Bug 17392.
* | Updated PR by removing whitespaces. Bug 17450.Bernhard Schommer2015-10-201-38/+38
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* | Use Coq strings instead of idents to name external and builtin functions.Xavier Leroy2015-10-111-6/+7
|/ | | | | | | | | | The AST.ident type represents source-level identifiers as unique positive numbers. However, the mapping identifiers <-> AST.ident differs between runs of CompCert on different source files. This is problematic when we need to produce or recognize external functions and builtin functions with fixed names, for example: * in $ARCH/Machregs.v to define the register conventions for builtin functions; * in the VST program logic from Princeton to treat thread primitives specially. So far, we used AST.ident_of_string to recover the ident associated with a string. However, this function is defined in OCaml and doesn't execute within Coq. This is a problem both for VST and for future executability of CompCert within Coq. This commit replaces "ident" by "string" in the arguments of EF_external, EF_builtin, EF_inline_asm, EF_annot, and EF_annot_val. This provides stable names for externals and builtins, as needed. For inline asm and annotations, it's a matter of taste, but using strings feels more natural. EF_debug keeps using idents, since some kinds of EF_debug annotations talk about program variables.
* Fixed minor issue with parameters that get put on the stack, madeBernhard Schommer2015-09-301-4/+6
| | | | the code more robust and added indentation for convertCompositeDef
* Added location for the formal parameters and move the end of allBernhard Schommer2015-09-281-0/+1
| | | | scopes before the last statement.
* Merge branch 'debugscopes' into debug_locationsBernhard Schommer2015-09-211-38/+36
|\ | | | | | | | | | | Conflicts: debug/CtoDwarf.ml debug/DwarfPrinter.ml
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