| Commit message (Collapse) | Author | Age | Files | Lines |
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As suggested in GPR#84, use '%.15F' to force the printing of more significant digits. (The '%F' format previously used prints only 6.) This is enough to represent the FP number exactly most of the time (but not always).
Once OCaml 4.03 is out and CompCert switches to this version of OCaml, we'll be able to use hexadecimal floats for printing.
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Two reasons:
- The movs is not supported if rd or rs is r13 (the stack ptr register).
Newer versions of GNU as reject it, older versions were probably
emulating it.
- The purpose of setting the "s" flag on some operations is to
enable 16-bit encoding in Thumb2 mode. However, for "mov"
it is the non-s form that has a 16-bit encoding; the s form
is never more compact.
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Follow-up to commit f531d38
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ARM: add __builtin_clzl, __builtin_clzll
IA32: add __builtin_clzl, __builtin_clzll,
__builtin_ctzl, __builtin_ctzll
Add corresponding tests in tests/regression/
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compatibility, and not "unsigned int", as previously implemented.
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On older version of the binutils the cfi directives are not always
supported so we only print cfi_sections if the corresponding .ini
setting is set to true.
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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
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Bug 17392
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The gcc produces DW_AT_ranges for non-contiguous address ranges, like
compilation units containing functions which are placed in different
ELF-sections or lexical scopes that are split up. With this commit
CompCert also uses this DWARF v3 feature for gnu backend based targets.
In order to ensure backward compability a flag is added which avoids
this and produces debug info in DWARF v2 format.
Bug 17392.
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In contrast to the dcc, the gcc uses address ranges to express
non-contiguous range of addresses. As a first step we set the
start and end addresses for the different address ranges for
the compilation unit by using the start and end addresses of
functions.
Bug 17392.
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Bug 17392.
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GCC prints all string larger than 3 characters in the debug_str
section which reduces the size of the debug information since entries
containing the same string now map to the same string in the
debug_str sections.
Bug 17392.
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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.
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Like for arm and ppc the functions for section names and start and
end addresses of compilation units are defined and the print_annot
function is moved to Asmexpandaux.ml.
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The name_of_section function no returns the correct name for the
debug sections, the prologue and epilogue directives are added and
the labels for the live ranges are introduced in the Asmexpand pass.
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taking the ident as argument.
This functions are currently not used inside the proven part but it
is nice to have them already there, when they are used by some future
pass. They also come equiped with the corresponding proofs.
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If a user uses the #pragma use_section for functions the diab linker
requires a separate debug_info section for each entry. This commit
adds functionality to emulate this behavior.
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Debuging code.
The old functions to store the symbol for the Global variables and retrive this
is no longer needed since the atom is stored in DebugInformation. Also the
Debug.Abbrev module is no longer needed.
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This commit adds furher support for location information for local
variables and starts with the implementation of the debug_loc section.
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Instead of creating separate annotations for the local variables
we call the Debug.add_lvar_scope and we construct a mapping from
function id + scope id to scope information.
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This reverts commit 861292a6c5e58b4f78bef207c717b801b3fc1fed.
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Added a new file debug/Debug.ml which will be the interface between for
generating and printing the debuging information. Currently it contains
only the code for the line directived.
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Merge branch 'master' into debug_locations
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Conflicts:
debug/CtoDwarf.ml
debug/DwarfPrinter.ml
debug/DwarfTypes.mli
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Plus: update comments and credit Bernhard Schommer.
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Merge branch 'asmexpand' of github.com:AbsInt/CompCert
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This reverts commit 777566e81b9762d6bdc773a1f63d56a7ac97433c, reversing
changes made to daf9ac64fc9611ecf09d70560a6fa1ba80b9c9c1.
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the same way as it is done for PPC.
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integers with Uns or Sgn abstract values.
This is a follow-up to commit 2932b53. It adds provenance tracking to the Uns and Sgn abstract values.
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operations with undefined behaviors.
Consider (x ^ 1) ^ 1 where x is a intptr_t containing a pointer value. "x ^ 1" evaluates to Vundef in the CompCert semantics, hence the value analysis, in strict mode, gives abstract result Ifptr Pbot (= any number but not a pointer). In relaxed mode, we now give abstract result Ifptr (poffset p) where p is the abstraction of the pointer, thus keeping track of the actual leak of the pointer value.
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- Treat clobbered registers as being destroyed by EF_inline_asm builtins
(which is the truth, semantically).
- To enable the above, represent clobbers as Coq strings rather than idents
and move register_by_name from Machregsaux.ml to Machregs.v.
- Side benefit: more efficient implementation of Machregsaux.name_of_register.
-# Please enter the commit message for your changes. Lines starting
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