iverilog/tgt-vvp
Stephen Williams 91b7c6ab55 Merge branch 'master' into vec4-stack
Conflicts:
	vvp/vthread.cc
2014-02-21 18:04:16 -08:00
..
Makefile.in Start work on converting vec4 expressions to use stack. 2013-12-27 17:04:42 +02:00
README.txt tgt-vvp generates code that skips nets as inputs. 2001-08-10 00:40:45 +00:00
draw_class.c Add support for darrays as class properties. 2013-01-27 20:10:25 -08:00
draw_enum.c updated FSF-address 2012-08-29 10:12:10 -07:00
draw_mux.c Fix printf opcode argument mismatches in tgt-vvp (cppcheck) 2012-08-31 12:36:55 -07:00
draw_net_input.c Make tgt-vvp insert a BUFT for pulldown devices. 2013-10-26 23:49:43 +01:00
draw_switch.c updated FSF-address 2012-08-29 10:12:10 -07:00
draw_ufunc.c Vec4 store to memories. 2014-01-05 10:30:59 -08:00
draw_vpi.c Wrap up vpi access to vec4 stack items. 2014-01-14 17:10:03 -08:00
eval_bool.c Add the %event instruction, remove %ix/get and %ix/get/s. 2014-01-05 12:39:52 -08:00
eval_expr.c Remove some dead code in tgt-vvp. 2014-01-13 17:45:44 -08:00
eval_object.c More vec4 support for various things. 2014-02-07 11:24:41 -08:00
eval_real.c vec4 implementations of real ternary and vec4 to real casts. 2014-01-21 12:02:59 -08:00
eval_string.c Fix leaks in the object stack 2013-12-03 17:24:42 -08:00
eval_vec4.c Better job of matching adder operand sizes for vec4 code generator. 2014-02-10 18:06:56 -08:00
modpath.c updated FSF-address 2012-08-29 10:12:10 -07:00
stmt_assign.c Port UWIRE assignments to vec4 branch. 2014-02-10 17:19:52 -08:00
vector.c Redesign support for system functions that return vec4 2014-01-04 22:06:58 +00:00
vvp-s.conf.in Remove redundant back-end selections. 2008-09-07 16:43:54 -07:00
vvp.c various vec4 fixes. 2014-01-25 19:25:21 -08:00
vvp.conf.in Remove redundant back-end selections. 2008-09-07 16:43:54 -07:00
vvp_config.h.in updated FSF-address 2012-08-29 10:12:10 -07:00
vvp_priv.h Various internal vec4 size mismatches fixed. 2014-02-07 17:50:13 -08:00
vvp_process.c Merge branch 'master' into vec4-stack 2014-02-21 18:04:16 -08:00
vvp_scope.c vvp code generation for class methods in class scope. 2013-03-24 15:12:35 -07:00

README.txt

THE VVP TARGET

SYMBOL NAME CONVENTIONS

There are some naming conventions that the vp target uses for
generating symbol names.

* wires and regs

Nets and variables are named V_<full-name> where <full-name> is the
full hierarchical name of the signal.

* Logic devices

Logic devices (and, or, buf, bufz, etc.) are named L_<full_name>. In
this case the symbol is attached to a functor that is the output of
the logic device.


GENERAL FUNCTOR WEB STRUCTURE

The net of gates, signals and resolvers is formed from the input
design. The basic structure is wrapped around the nexus, which is
represented by the ivl_nexus_t.

Each nexus represents a resolved value. The input of the nexus is fed
by a single driver. If the nexus in the design has multiple drivers,
the drivers are first fed into a resolver (or a tree of resolvers) to
form a single output that is the nexus.

The nexus, then, feeds its output to the inputs of other gates, or to
the .net objects in the design.