d6391490e3
Resize vector before assigning to a dynamic array word.
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Failing to do this leads to an assertion failure in vvp.
2019-09-16 20:39:19 +01:00
c066e2d15c
Properly implement casts from strings and dynamic arrays to vectors.
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As discussed on iverilog-devel (2018-03-09), the existing implementation
(using Icarus-specific vpi functions) only worked with assignments to
simple variables, and could not be easily modified to work more generally.
So use the new vvp instructions added in the previous two commits.
2019-09-11 22:08:46 +01:00
ffb34861cf
Fix GitHub issue #244 : handle mixed signed/unsigned power operations.
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The signed version of the power operation in vvp should only be used
if the exponent is signed. Both signed and unsigned versions will
produce the correct result regardless of the type of the base operand,
provided it has been appropriately extended to the result size.
2019-05-11 21:33:29 +01:00
5cd0ba08b1
Fix alloc size warning when building with recent GCC.
2018-10-06 23:25:13 +01:00
5cfb7d68ae
Add support for rtran switches in vvp.
2018-02-23 22:30:32 +00:00
0caa109174
Merge pull request #181 from phire/portinfo_grammar
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vvp grammar: .port_info statements should require/generate semicolons.
2017-12-18 10:04:42 -08:00
7b84b29bbc
tgt-vvp: Output semicolon after .port_info statements
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Backwards compatablity is perserved due to the parser interperting the
unexpected semicolon as an empty statement.
2017-12-16 23:59:48 +13:00
db1ea05452
Fix #0 to trigger in the inactive region and add a trigger for always_comb/latch
2017-12-03 20:17:42 -08:00
585a0232cb
Add preliminary support for always_comb, always_ff and always_latch
2017-11-20 07:50:05 -08:00
3fc9ad2db0
Add support for the wild compare operators ==? and !=?
2017-11-17 19:32:50 -08:00
5ca058bfb5
Add support for darray initialisation from another darray.
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Fixes GitHub issue #164 .
2017-10-08 17:51:33 +01:00
1aeaafa96c
Add support for vec4 darray initialisation from an array pattern.
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This was just a missing case label in tgt-vvp.
2017-10-08 17:41:58 +01:00
f32b64f497
Fixed warnings about shifting a negative value
2016-09-19 12:54:15 -07:00
d44c814bab
Remove .alias records from vvp generated code.
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Net arrays can be handled by nets directly, instead of creating
.alias records.
2016-08-31 14:05:09 -07:00
9ad46044b4
Cleanup
2016-06-30 17:47:34 +02:00
61c82d2cb0
Handle mixed continuous and non-blocking assignments to same vector.
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SystemVerilog allows a mixture of procedural and continuous assignments
to be applied to different parts of the same vector. The previous attempt
to make this work for non-blocking assignments was flawed (see preceding
fix for vvp_fun_part_pv::recv_vec4_pv). Instead, handle this case by
converting the non-blocking assignment into a delayed force statement,
which matches the way mixed continuous and blocking assignments are
handled.
2016-05-10 22:16:40 +01:00
20104c92c8
Fix for GitHub issue #96 - support mixed constant/variable delays in vvp.
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If all three rise/fall/decay delay values are constant, we can use
the vvp .delay statement variant that takes three literal numbers.
If not, we have to use the variant that takes three net inputs. If
some of the delay values are constant, we need to create constant
drivers for those delay inputs.
2016-04-02 19:55:56 +01:00
54feb89bf5
For SystemVerilog, run variable initialization before main simulation starts.
2016-03-19 13:46:09 +00:00
dbaf2471f2
Fix for br1001 - connect undriven wand/wor to 'bz in tgt-vvp.
2016-03-13 16:38:55 +00:00
d7736d7eba
latch for vvp output
2016-03-11 23:44:06 +00:00
9a7f31c728
Functions that return strings pass the return value on the stack.
2016-03-01 15:38:28 -08:00
7d21891147
Fix space issues.
2016-02-28 22:09:39 -08:00
a0bee0a76f
Add support for real valued compressed assignment statements in tgt-vvp.
2016-02-23 22:02:03 +00:00
a85c64d347
Revert "Add support for real valued compressed assignment statements in tgt-vvp."
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This reverts commit 3fede95f5e
2016-02-23 21:49:49 +00:00
3fede95f5e
Add support for real valued compressed assignment statements in tgt-vvp.
2016-02-23 20:58:30 +00:00
b77d758f19
Fix compressed assignments to concatenations.
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When loading a lval concatenation, tgt-vvp was loading the elements
in the wrong order for the %concat instruction.
2016-02-23 16:44:03 +00:00
841593d013
Remove some compile warnings
2016-02-03 21:40:18 -08:00
f494b478cc
Merge branch 'master' into return-stack
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# Conflicts:
# sv_vpi_user.h
2016-02-01 14:47:44 -08:00
469d4fefa7
Handle compressed assign to function return value.
2016-02-01 12:38:48 -08:00
ce692f90ad
Implement and use the %retload/real opcode.
2016-02-01 09:31:06 -08:00
c114edfa6c
Handle void functions with new .scope format.
2016-02-01 09:29:49 -08:00
fac7de2133
Better handle some different function types in the .scope setup.
2016-01-31 16:16:02 -08:00
604a62379c
Make .scope aware of return type, and extend %ret/vec4 operands
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The .scope needs to be aware of return types so that the %call/vec4
function knows how to intialize the return value. We also need to
extend the %ret/vec4 to support writing parts of the return value.
2016-01-31 15:29:52 -08:00
e435a879fc
Add ability to read back return value / Add vec4 stacked user functions.
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Also:
- handle functions as arguments to system tasks.
- Cleanup detect of signal as return value.
2016-01-24 18:36:26 -08:00
0c91a6b041
Add .ufunc/real functor to handle functions with return value on stack.
2016-01-17 16:23:28 -08:00
bfc9cd8715
Make real functions in processes use parent stack for return value.
2016-01-10 17:09:33 -08:00
37a63e5d6d
Merge pull request #88 from orsonmmz/image_attr
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'image attribute
2016-01-10 15:49:26 -08:00
eb2a9be0c9
Fix for br999 - incorrect result from binary comparison.
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When a binary (in)equality comparison has a constant left operand,
the tgt-vvp code generator swaps the left and right operands to
allow the cmpi instruction to be used. The code for swapping the
operands was incorrect.
2016-01-07 19:11:42 +00:00
df6b24fd3a
ivl & vvp: Enabled 'string' as the return type in VPI functions.
2016-01-05 14:23:25 +01:00
63ad15ee2e
Rework user function calls to use specialized opcodes.
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Create The %callf/* opcodes to invoke user defined functions in a
more specialized way. This allows for some sanity checking on the
way, and also is a step towards keeping return values on stacks.
2015-12-27 20:29:10 -08:00
6c91588d33
Fix some errors found with cppcheck
2015-11-02 00:14:29 -08:00
a65c007fdb
Fix some cppcheck warnings
2015-10-02 09:43:54 -07:00
f01a312f17
Minor code generation improvements
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Use $flag_inv instead of %inv is several places.
2015-09-30 16:25:10 -07:00
fe7156289b
Remove some useless vvp opcodes.
2015-09-30 15:41:22 -07:00
571109481f
Use cmpi in more cases
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Before this patch, only literals on the right side of a < compare
(or left side of a > compare) would be blended into a %cmpi instruction.
This patch broadends the cases where the %cmpi can be used.
2015-09-30 12:35:19 -07:00
9f4b485c1c
Updated copyright dates displayed for main programs and targets.
2015-08-17 22:05:08 +01:00
05a52e55e9
Create a BUFZ to drive the 0.0 value onto an undriven real wire.
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This is needed to allow forced values to propagate correctly.
2015-06-26 00:45:00 +01:00
b242663cae
Support negedge flip-flops in synthesis and in vvp.
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Also extend the support for FF asynchronous set values to vvp and
fix the dff functor in vvp to correctly model asynchronous set/clr
behaviour.
2015-06-13 16:47:57 +01:00
2739f83702
Spelling fixes in C and C++ comments
2015-06-04 15:00:29 -07:00
33c651aa00
Spelling fixes in .txt files
2015-05-25 12:52:03 -07:00
Martin Whitaker
Stephen Williams
Scott Mansell
Cary R
Maciej Suminski
Michele Castellana
Johann Klammer
Martin Whitaker
Larry Doolittle