luke/iverilog
1
0
Fork 0
mirror of https://github.com/steveicarus/iverilog.git synced 2026-09-03 08:25:32 +02:00
Code Issues Packages Projects Releases Wiki Activity

Add support for signed thread base index for &A<>

Browse Source 
This patch adds support for getting a signed index for &A<> from
thread space. This mimics what was done for &PV<>.
This commit is contained in:
Cary R
2009-09-22 17:20:31 -07:00
committed by Stephen Williams
parent c82baa2793
commit e54fd4df51
5 changed files with 49 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files
vvp/array.cc
+37 -9
View File
@@ -128,6 +128,7 @@ struct __vpiArrayVthrA {
// If wid >0, then the address is the base and wid the vector
// width of the index to pull from the thread.
unsigned wid;
bool is_signed;
unsigned get_address() const
{
@@ -150,14 +151,37 @@ struct __vpiArrayVthrA {
if (wid == 0)
return address;
vvp_vector4_t tmp (wid);
for (unsigned idx = 0 ; idx < wid ; idx += 1) {
vvp_bit4_t bit = vthread_get_bit(vpip_current_vthread, address+idx);
tmp.set_bit(idx, bit);
/* Get the value from thread space. */
int tval = 0;
for (unsigned idx = 0 ; (idx < wid) && (idx < 8*sizeof(tval));
idx += 1) {
vvp_bit4_t bit = vthread_get_bit(vpip_current_vthread,
address + idx);
switch (bit) {
case BIT4_X:
case BIT4_Z:
/* Return UINT_MAX to indicate an X base. */
return UINT_MAX;
break;
case BIT4_1:
tval |= 1<<idx;
break;
case BIT4_0:
break; // Do nothing!
}
}
unsigned long val = ULONG_MAX;
vector4_to_value(tmp, val);
return val;
if (is_signed && (wid < 8*sizeof(tval))) {
vvp_bit4_t msb = vthread_get_bit(vpip_current_vthread,
address + wid - 1);
if (msb == BIT4_1) {
tval |= ~((1 << wid) - 1);
}
}
return tval;
}
};
@@ -1547,7 +1571,8 @@ vpiHandle vpip_make_vthr_A(char*label, unsigned addr)
return &(obj->base);
}
vpiHandle vpip_make_vthr_A(char*label, unsigned tbase, unsigned twid)
vpiHandle vpip_make_vthr_A(char*label, unsigned tbase, unsigned twid,
char*is_signed)
{
struct __vpiArrayVthrA*obj = (struct __vpiArrayVthrA*)
malloc(sizeof (struct __vpiArrayVthrA));
@@ -1562,7 +1587,10 @@ vpiHandle vpip_make_vthr_A(char*label, unsigned tbase, unsigned twid)
obj->address_handle = 0;
obj->address = tbase;
obj->wid = twid;
obj->wid = twid;
obj->is_signed = strcmp(is_signed, "s") == 0;
delete [] is_signed;
return &(obj->base);
}