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Add support for .part/v.s

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This patch adds support for .part/v.s. A variable part select with
a signed select expression in a continuous assign.
This commit is contained in:
Cary R
2009-09-22 17:31:37 -07:00
committed by Stephen Williams
parent e1af002a32
commit 98c39cfa24
7 changed files with 28 additions and 31 deletions
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vvp/part.cc
+10 -12
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@@ -229,8 +229,8 @@ void vvp_fun_part_pv::recv_vec8(vvp_net_ptr_t port, const vvp_vector8_t&bit)
vvp_send_vec8_pv(port.ptr()->out, bit, base_, wid_, vwid_);
}
vvp_fun_part_var::vvp_fun_part_var(unsigned w)
: wid_(w)
vvp_fun_part_var::vvp_fun_part_var(unsigned w, bool is_signed)
: wid_(w), is_signed_(is_signed)
{
}
@@ -251,9 +251,7 @@ bool vvp_fun_part_var::recv_vec4_(vvp_net_ptr_t port, const vvp_vector4_t&bit,
// INT_MIN is before the vector and is used to
// represent a 'bx value on the select input.
tmp = INT_MIN;
// We need a new .part/v that knows if the index is signed.
// For now this will work for a normal integer value.
vector4_to_value(bit, tmp, false);
vector4_to_value(bit, tmp, is_signed_);
if ((int)tmp == base) return false;
base = tmp;
break;
@@ -280,8 +278,8 @@ bool vvp_fun_part_var::recv_vec4_(vvp_net_ptr_t port, const vvp_vector4_t&bit,
return false;
}
vvp_fun_part_var_sa::vvp_fun_part_var_sa(unsigned w)
: vvp_fun_part_var(w), base_(0)
vvp_fun_part_var_sa::vvp_fun_part_var_sa(unsigned w, bool is_signed)
: vvp_fun_part_var(w, is_signed), base_(0)
{
}
@@ -320,8 +318,8 @@ struct vvp_fun_part_var_state_s {
vvp_vector4_t ref;
};
vvp_fun_part_var_aa::vvp_fun_part_var_aa(unsigned w)
: vvp_fun_part_var(w)
vvp_fun_part_var_aa::vvp_fun_part_var_aa(unsigned w, bool is_signed)
: vvp_fun_part_var(w, is_signed)
{
context_scope_ = vpip_peek_context_scope();
context_idx_ = vpip_add_item_to_context(this, context_scope_);
@@ -436,13 +434,13 @@ void compile_part_select_pv(char*label, char*source,
}
void compile_part_select_var(char*label, char*source, char*var,
unsigned wid)
unsigned wid, bool is_signed)
{
vvp_fun_part_var*fun = 0;
if (vpip_peek_current_scope()->is_automatic) {
fun = new vvp_fun_part_var_aa(wid);
fun = new vvp_fun_part_var_aa(wid, is_signed);
} else {
fun = new vvp_fun_part_var_sa(wid);
fun = new vvp_fun_part_var_sa(wid, is_signed);
}
vvp_net_t*net = new vvp_net_t;
net->fun = fun;