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Diffstat (limited to 'NEWS')
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@@ -1,443 +0,0 @@ -NEWS for ghdl (Dunoon Edition) - -New in 0.35 (XXXX-XX-XX) -* Assert and report messages are sent to stdout (#394) - -New in 0.34 (2017-08-15) -* Display stack backtraces on errors or assert failures -* Compile scripts for vendor libraries (Xilinx, Altera, osvvm, vunit) -* Use SSE2 for mcode backend -* Mode backend ported to x86_64 -* Support cocotb (https://github.com/potentialventures/cocotb) -* Main repository is now on github: https://github.com/tgingold/ghdl -* Docs available on rtd: https://ghdl.readthedocs.org/en/latest/ -* Speed improved. -* New option --psl-report, to report status of psl assert and cover. -* vhdl 2008: support nested packages - -New in 0.33 (2015-10-04) -* Improve support of vhdl 2008 -* Support OSVVM 2015 (http://osvvm.org) -* Support vunit (https://github.com/LarsAsplund/vunit) -* Many bugs fixed - -New in 0.32 (2014-11-XX) -* Updated to build with gcc-4.9.2. -* Partial support of VHDL-2008 (available with --std=08): -* support of new std.env package. -* support of added features in std.textio package -* support of all standard IEEE packages. -* support of new operations (relation operators, maximum and minimum, unary - reduction operators) -* support of boolean_vector, integer_vector, real_vector. -* support of process(all). -* support of generic packages and interface package declarations. -* support of block comments (aka delimited comments) -* support of implicitely defined to_string functions. -* Support OSVVM 2014_01 -* Bugs fixed - -New in 0.31 (2014-01-XX) -* Updated to build with gcc-4.8.2. -* Supports OSVVM (Open-Source VHDL Verification Methodology) (see osvvm.org) - in its VHDL-2002 form. -* Adds 'image and 'value attributes for all required datatypes -* Many bugs and support issues fixed. -* New home on https://sourceforge.net/projects/ghdl-updates/ - -New in 0.30 -Never released, swith to Dunoon Edition. - -New in 0.29 (2010-01-09) -* Initial implementation of embedded PSL assertions. -* Improve speed of non-sensitized processes. -* Improve speed of string case statement (dichotomy instead of linear search). -* bug fix and improvments in SDF annotator. -* bug fix when the bound of a string literal type is not locally static. -* bug fix: gcov crash - -New in 0.28 (2009-09-17) -* Add --std=08 to enable vhdl 2008 features. -* Support all-sensitized processes from vhdl 2008. -* bug fix: handle 'pos/'leftof/'rightof/'succ/'pred in concurrent statements. -* bug fix: overloaded resolution functions. -* bug fix: direct drivers elaboration for unconstrained array signals. -* Documentation typos (thanks to Peter Huewe). -* many minor bugs fixed. - -New in 0.27 (2008-07-01) -* Improve SDF annotation (handles much more annotations) -* Add --ieee-asserts= option to control assert messages from ieee packages. -* bug fix: aliases in port map -* bug fix: crash during elaboration for top entities with ports/generic -* bug fix: crash when string literal in aggregate. -* bug fix: concatenation with an array subtype element. -* bug fix: non-static subtype used by type conversions in associations. -* bug fix: clear timeout in wait for. -* minor bugs fixed. - -New in 0.26 (2007-04-08) -* GHDL_PREFIX environment variable overrides default installation prefix. -* simulation speed improved with 'direct drivers'. -* windows version: exceptions are caught -* windows version: use executable path instead of registry for prefix -* bug fix: individual association by expression (was not working) -* bug fix: individual association of string -* bug fix: within windows code generator -* bug fix (windows): large local variables crashed -* bug fix: crash when overloaded aggregate target. -* bug fix: forbid individual association with open -* bug fix: crash when bad array prefix -* bug fix: correctly extract sensitivity of record aggregate - -New in 0.25 (2006-08-11) -* bug fix: ieee math libraries available when --ieee=synopsys. -* bug fix: 'image in package bodies. -* bug fix: scan of fp literals. -* bug fix: interface identifier is checked for conformance rules. -* bug fix: avoid a crash in case of error in configuration specification. -* bug fix: non-static choice in unidim case are now correctly checked. -* bug fix: do not crash in case of bad use of incomplete type. -* bug fix: 'range are not expressions. -* bug fix: handle file declaration in concurrent procedure calls. -* bug fix: correctly handle static 'image attribute. -* bug fix: handle in-conversion for signal associated with an expression. -* bug fix: emit an error when a function tries to exit without a return. -* vpi functions to schedules values. -* math_real now works under windows. -* documentation updated for windows. -* filename/line number displayed for range error during signal update. - -New in 0.24 (2006-06-25) -* bug fix: correctly handle empty file name. -* bug fix: correctly handle unused subprograms of protected types. -* bug fix: avoid a crash if unused library are use'd. -* bug fix: avoid crashes during error reports. -* bug fix: add a missing case array conversion. -* bug fix: build on x86_64. -* bug fix: code generated for conversion after mod/rem (windows version). -* bug fix: -fexplicit crashed with std.standard functions. -* bug fix: handle recursion of pure/wait checks. -* bug fix: correctly handle error cases of user attributes -* bug fix: time and character read procedure of std.textio. -* bug fix: initialize by value parameters (instead of copy-in). -* Handle enums with more than 256 elements. -* Relax expr static rules in 93c to analyze Xilinx core lib from 8.1 -* man page (ghdl.1) added. -* windows installer improved - -New in 0.23 (2006-05-16) -* bug fix: handle implicit conversion in resolution functions. -* bug fix: missing implicit conversion added. -* bug fix: avoid a crash in error. - -New in 0.22 (2006-03-28) -* direntry added in ghdl.texi -* bug fix: avoid crash if type conversion is indexed/sliced. -* bug fix: do not allow anymore uncomplete individual association -* bug fix: missing check on array association -* bug fix: check bounds for val attribute on enumerated type. -* bug fix: array inequality of locally static expressions evaluated. -* bug fix: configuration issue. -* bug fix: --warn-no-vital-generic is now working. -* Documentation updated (explain bug in Xilinx unisim library). -* Updated to gcc 4.1 -* math_real updated. - -New in 0.21 (2005-12-18) -* bug fix: line number for some bound violation messages. -* bug fix: improved message error for deferred constants. -* bug fix: file parameter for functions. -* bug fix: universal real divided by integer handled in locally static expr. -* bug fix: std_ulogic types and arrays are known by vpi. -* bug fix: missing space added in VCDs for integers. -* bug fix: CR+LF is also end of line for std.textio.readline. -* bug fix: avoid a crash if parse error on choice. -* bug fix: handle 'image in nested subprograms. -* bug fix: handle 'image for floating point types. -* bug fix: do not use varargs C calls. -* bug fix: handle missing EOL for readline. -* local optimizations (loops, indexed name). -* simulation speed improved by 20% due to processes mngt optimizations. -* stack-switching code ported to x86_64 (amd64/em64t). -* stack-switching code ported to ia64. -* bug fixes for x86_64. -* --syn-binding option extended (see documentation). - -New in 0.20 (2005-10-15) -* stack memory usage improved for shortcurt operations. -* gtkwave now displays nice waves for bit and std_ulogic signals. -* time unit is displayed in assert/report message. -* -fexplicit option added. -* integers are now written in VCD files. -* hash table added for design_units (speed optimization). -* range checks slightly optimized. -* --vcdz run time option added. -* improved error message for invalid expressions. -* grt now compiles with GNAT-GPL-2005 (use a GNAT bug work-around). -* bug fix: handle more types for --dump-rti and --wave. -* bug fix: 'last_event and 'last_active (bad value returned when no previous - event or activity). -* bug fix: 'image attribute for physical types (was bad unit). -* bug fix: 'image attribute for locally static integers. -* bug fix: for reading .ghw files. -* bug fix: in --xref. - -New in 0.19 (2005-08-17) -* bug fix: internal error (missing close_temp for implicit read) -* bug fix: --xref-html: avoid to reanalyze unit. -* bug fix: handle implicit conversion for 'image. -* bug fix: aggregate assigned to an aggregate: avoid crash. -* bug fix: array attributes on unconstrained array: avoid crash. -* bug fix: 'last_event returns time'high if no event. -* bug fix: 'last_event on array (uninitialized variable). -* bug fix: allow calling rising_edge with a port of mode buffer. -* bug fix: allow aliases of unconstrained arrays. -* bug fix: bound error on aggregate with an unused other association. -* bug fix: catch indexed/sliced component (was crashing). -* bug fix: catch index/slice of a type conversion (was crashing). -* bug fix: handle bad component specification in conf (was crashing). -* bug fix: missing ports in component (was crashing). -* bug fix: component configurations were dicarded by bug in some cases. -* bug fix: no more unused warnings for subprograms in architectures - (they may be used in configuration). -* bug fix: allow conversion in component configuration. -* bug fix: conversion in associations with not statically defined array - signals. -* ADAFLAGS has been replaced by GHDL_ADAFLAGS to ease compilation. -* ieee.math_real and ieee.math_complex added (only partially, based on a - draft). -* current time is printed with assert/report messages. -* stack switch assembly code ported to powerpc-linux. -* documentation on how to use grt from Ada added. -* allow indexes of indexed names to be non-static in case statements (93c only) - (this is not standard, but I can't see why it should be required). -* unbound ports of entities are now reported with --warn-binding. -* some error or warning messages improved. -* --wave option added to dump waveforms (using ghw file format). - -New in 0.18 (2005-03-12) -* bug fix: in textio.read for time. -* bug fix: file_close does not crash if file was already closed. -* bug fix: spurious unused warnings for protected types. -* bug fix: allow subtype names in slice during sensitivity extraction. -* bug fix: correctly set the default value of collapsed ports. -* bug fix: handling of stack2 (aka large concatenation bug). -* Keep last line number to speed-up line number look-up (improvement). -* --warn-default-binding added, --warn-binding rewritten. -* 'value implemented for integer numbers. - -New in 0.17 (2005-02-26) -* command --elab-run added. -* Code generation for aggregate improved. -* bug fix: port map with expression (corner case ?). -* Library name of option --work= is checked. -* bug fix: forbid empty extended identifiers. -* --no-run option added to prevent simulation (may be used to disp tree only). -* disp signal name in error when multiple sources drive an unresolved signal. -* -m/--gen-makefile now handle several libraries. -* dependences are not stored anymore in libraries (shorter/faster). -* bug fix: enumeration literal xrefs. -* mentor version of ieee library is now provided. -* bug fix: non-object name in sensitivity list crashed. -* handling of universal types is more consistent with LRM - (almost corner cases). -* iterator and indexes whose bounds were universal expressions are now - of type integer or erroneous, according to the weird LRM rules. -* handle selected name as entity name in architecture/configuration. -* bug fix: correctly handle alias of signals in processes. - -New in 0.16 (2005-01-02) -* bug fix: better handling of errors in type conversion. -* bug fix: few uninitialized variables in ghdl itself caught. -* std.textio: readline has no limits on line length. -* bug fix: parse error: 'begin' in aggregates. -* bug fix: bad 'unused subprogram' warnings. -* command -r (run) added. - -New in 0.15 (2004-10-13) -* library file format modified to handle relative paths. -* install fixed to use relative paths. -* internal change: ortho API modified (constant are not anymore expressions). - -New in 0.14 (2004-08-29) -* bug fix: resolution function can be an expanded name. -* bug fix: missing type check in a corner case. -* bug fix: emit an error when EOF is reached while a text file is read. -* bug fix: std.textio.read for negative number. -* bug fix: std.textio.read [integer]: correctly handle end of line. -* bug fix: parameters of protected type: handled and checked. -* bug fix: gen_tree.c modified to work with sparc. -* pretty printing in HTML command (--pp-html) added. -* xref generation in HTML command (--xref-html) added. -* syntax checking command (-s) added. -* Code generation in whole command (-c files -e unit) added. -* warns for unused subprograms. -* bug box added to help bug reports. -* -s (syntax check) command added. -* Missing grt subprogram to close non-text file added. -* maximum line length of std.textio.readline extended to 512 characters. -* std.textio.readline assert error on truncated lines. -* Handle P32 and P64 in --trace-signals -* sequentials statements are not canonicalized (should be faster). -* DESTDIR added in Makefile to ease packaging. -* for -m command, re-parse modified files of the work library. -* Many checks added on interfaces. -* Many checks added on associations, better handling of conversions. -* Checks for unassociated entity ports at elaboration. - -New in 0.13 (2004-06-26) -* support of 64bits integers and 32bits time (not yet user available) -* handle 'high and 'low attributes on non-locally static types and subtypes. -* Many warning switches added (to control output of warnings). -* --gen-makefile mode added to ghdl (to generate a Makefile) -* alias identifier restrictions of vhdl-02 implemented. -* declarative region for architecture from vhdl-02 implemented. -* buffer port association rules of vhdl-02 implemented. -* method operator restrictions of vhdl-02 implemented. -* 'driving and 'driving_value implemented. -* run-time bound check error message now contains file name and line number. -* strings are not stored anymore with the identifiers. -* parser does not back-track anymore. -* bug fix: name clash in generated .s files (arch and port/generic names). -* bug fix: implicit conversion of signal parameters. -* bug fix: handle locally static type conversion of arrays. -* bug fix: stabilize during elaboration of an unconstrained signal. -* bug fix: revert previous vhdl87 conf spec bug fix, according to INT-1991 - issue 27. -* bug fix: multiple visibility of declarations (eg: direct and alias). -* bug fix: names attribute of non-object aliases. - -New in 0.12 (2004-05-30) -* simulation speed improved (2 fold) due to reduced activity optimization. -* type conversion handled in associations -* make mode of ghdl improved. -* bug fix: attribute specification -* bug fix: allow discrete type marks in choices -* bug fix: handling of generate statement for VCD -* bug fix: allow dereference in variable associations -* bug fix: allow function conversion in block port map -* bug fix: vhdl87: apply configuration specification inside generate stmts. -* bug fix: catch non-passive concurrent procedure calls in entity. -* bug fix: association of an unconstrained port with an expression. -* bug fix: declaring an uncons. array subtype of an uncons. array subtype. - -New in 0.11.1 (2004-04-24) -* bug fix: corner case of signal not updated -* bug fix: handle 'stable, 'quiet with a paramater > 0 -* bug fix: typos (missing '+ ') in sparc.S - -New in 0.11 (2004-04-17) -* bug fix: in code generation for an aggregate. -* bug fix: run-time check of ascending order of projected transactions. -* bug fix: empty sequence of stmts in case alternatives (unidim array). -* bug fix: evaluation of locally static 'range attribute. -* signal collapsing improved. -* simulation kernel speed improved (maybe 5x faster). -* --lines mode of ghdldrv added. -* boolean signals are now dumped in vcd files. -* bug fix: implicit conversion in formal function convertor. -* bug fix: return type is a type mark. - -New in 0.10 (2004-02-28) -* architecture with many instances can be compiled with less memory. -* --stats option added to the simulator, to evaluate performance. -* signals are now collapsed between instances, if possible. -* simulation is about 3x faster. -* sparc port available (source only). -* more checks added for attribute specification. -* bug fixed: absolute source files. -* chop command added (split files by design unit). -* bug fixed: empty sequence of statements in case alternatives. - -New in 0.9 (2004-02-01) -* VITAL level 0 restrictions checks added. -* VITAL 2000 packages provided. -* run-time information (such as signal names) rewritten. -* SDF support added (partial and experimental). -* bug fixed: allow elaboration even if no package body if the package is - present in a file but not used by the hierarchy. -* bug fixed: delay_length range is pre-elaborated (was not in v93). -* bug fixed: crashed when a design unit is not found at elaboration. -* bug fixed: allow association of 'stable, 'quiet... with signal interfaces. -* bug fixed: concurrent procedure call creates a non-sensitized process. -* bug fixed: effective value of non-scalar resolved signal might not be set. - -New in 0.8 (2003-11-05) -* protected types (from 1076a/1076-2000) implemented. -* file declarations are finalized in subprograms. -* an exit call-back has been added in the run-time library. -* internal modifications (nodes are stored in a table). -* signal declaration not allowed in processes (bug fixed). -* name of generated executable can be set with '-o' option. -* IVI (ivi.sourceforge.org) support through a few VPI subprograms. -* pure and wait checks added. -* out ports are correctly dumped in VCD files. -* several bugs fixed. - -New in 0.7 (2003-08-02) -* layout of internal nodes improved. -* incremental binding (vhdl93). -* association of in port with expressions (vhdl93). -* instantiation added in hierarchy (bug fixed). -* individual association of subelements by expression (bug fixed). -* --disp-time option added. -* --stop-delta option is working (bug fixed). -* make mode (ghdl -m) rewritten. -* 'simple_name, 'path_name and 'instance_name added (vhdl93). -* correctly handle operators names at function call (bug fixed). -* several small bugs fixed. - -New in 0.6 (2003-06-09) -* internal modifications (single linked list used instead of arrays). -* bug fixed: xnor on bit and boolean is working. -* Mentor version of std_logic_arith is provided. -* postponed handled (vhdl 93). -* declarations allowed in a generate statement (vhdl 93). -* bug fixed: selected_name list in use clauses. -* non object aliases handled (vhdl93). -* signatures handled (vhdl93). -* many other small bug fixes. - -New in 0.5 (2003-05-10) -* foreign attribute handled. You can now call subprograms defined in a foreign - language (such as C or Ada). -* ghdl entry point added: you can start the VHDL simulation from your own - program. -* bug fixed: triple use. -* bug fixed: incomplete types - -New in 0.4.1 (2003-04-07) -* bug fixed in the vcd output. - -New in 0.4 (2003-04-02) -* libgrt does not depend on GNAT library anymore. - Installation requirements are reduced. -* 'delayed attribute implemented. -* 'transaction attribute implemented. -* unaffected (from vhdl-93) implemented. -* ghdl action '--disp-standard' prints the std.standard package. -* exponentiation operator ("**") implemented for all integer and floating - point types. -* bug fix: subprogram interfaces are now elaborated. -* many other small bug fixes. - --------------------------------------------------- - -Contributors to ghdl: - -Tristan Gingold (sole author of ghdl as a whole) -Brian Drummond (gcc4.8.2 update, OSVVM port, some bugfixes) -David Koontz (Mac OSX builds, LRM compliance work, bugfix analyses) -Joris van Rantwijk (Debian packaging) -Brian Davis (Windows Mcode builds) -Adam Jensen (FreeBSD builds) -Felix Bertram (VPI interface) - -with apologies to anyone who ought to be on this list but isn't. -Thanks also to all those who have reported bugs and support issues, -and often patches and testcases to either: -https://gna.org/bugs/?group=ghdl -or -https://sourceforge.net/p/ghdl-updates/tickets/ - |