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cxxrtl: expose driver kind in debug information.

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This can be useful to determine whether the wire should be a part of
a design checkpoint, whether it can be used to override design state,
and whether driving it may cause a conflict.
This commit is contained in:
whitequark 2020-09-02 17:16:10 +00:00
parent c7b2f07edf
commit 691418e13a
3 changed files with 112 additions and 12 deletions
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11
backends/cxxrtl/cxxrtl.h
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@ -837,6 +837,9 @@ struct debug_item : ::cxxrtl_object {
INPUT = CXXRTL_INPUT,
OUTPUT = CXXRTL_OUTPUT,
INOUT = CXXRTL_INOUT,
DRIVEN_SYNC = CXXRTL_DRIVEN_SYNC,
DRIVEN_COMB = CXXRTL_DRIVEN_COMB,
UNDRIVEN = CXXRTL_UNDRIVEN,
};
debug_item(const ::cxxrtl_object &object) : cxxrtl_object(object) {}
@ -856,11 +859,11 @@ struct debug_item : ::cxxrtl_object {
}
template<size_t Bits>
debug_item(const value<Bits> &item, size_t lsb_offset = 0, uint32_t flags_ = 0) {
debug_item(const value<Bits> &item, size_t lsb_offset = 0) {
static_assert(sizeof(item) == value<Bits>::chunks * sizeof(chunk_t),
"value<Bits> is not compatible with C layout");
type = VALUE;
flags = flags_;
flags = DRIVEN_COMB;
width = Bits;
lsb_at = lsb_offset;
depth = 1;
@ -903,7 +906,7 @@ struct debug_item : ::cxxrtl_object {
static_assert(sizeof(item) == value<Bits>::chunks * sizeof(chunk_t),
"value<Bits> is not compatible with C layout");
type = ALIAS;
flags = 0;
flags = DRIVEN_COMB;
width = Bits;
lsb_at = lsb_offset;
depth = 1;
@ -918,7 +921,7 @@ struct debug_item : ::cxxrtl_object {
sizeof(item.next) == value<Bits>::chunks * sizeof(chunk_t),
"wire<Bits> is not compatible with C layout");
type = ALIAS;
flags = 0;
flags = DRIVEN_COMB;
width = Bits;
lsb_at = lsb_offset;
depth = 1;