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Handle negative and undefined queue addresses correctly

This commit is contained in:
Cary R 2020-07-23 22:48:11 -07:00
parent f0f045f1f9
commit e94291c88f
1 changed files with 9 additions and 6 deletions
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15
vvp/vthread.cc
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@ -3663,7 +3663,7 @@ bool of_LOAD_AR(vthread_t thr, vvp_code_t cp)
*/
bool of_LOAD_DAR_R(vthread_t thr, vvp_code_t cp)
{
unsigned adr = thr->words[3].w_int;
int64_t adr = thr->words[3].w_int;
vvp_net_t*net = cp->net;
assert(net);
@ -3673,7 +3673,8 @@ bool of_LOAD_DAR_R(vthread_t thr, vvp_code_t cp)
vvp_darray*darray = obj->get_object().peek<vvp_darray>();
double word;
if (darray)
if (darray &&
(adr >= 0) && (thr->flags[4] == BIT4_0)) // A defined address >= 0
darray->get_word(adr, word);
else
word = 0.0;
@ -3684,7 +3685,7 @@ bool of_LOAD_DAR_R(vthread_t thr, vvp_code_t cp)
bool of_LOAD_DAR_STR(vthread_t thr, vvp_code_t cp)
{
unsigned adr = thr->words[3].w_int;
int64_t adr = thr->words[3].w_int;
vvp_net_t*net = cp->net;
assert(net);
@ -3694,7 +3695,8 @@ bool of_LOAD_DAR_STR(vthread_t thr, vvp_code_t cp)
vvp_darray*darray = obj->get_object().peek<vvp_darray>();
string word;
if (darray)
if (darray &&
(adr >= 0) && (thr->flags[4] == BIT4_0)) // A defined address >= 0
darray->get_word(adr, word);
else
word = "";
@ -3705,7 +3707,7 @@ bool of_LOAD_DAR_STR(vthread_t thr, vvp_code_t cp)
bool of_LOAD_DAR_VEC4(vthread_t thr, vvp_code_t cp)
{
unsigned adr = thr->words[3].w_int;
int64_t adr = thr->words[3].w_int;
vvp_net_t*net = cp->net;
assert(net);
@ -3715,7 +3717,8 @@ bool of_LOAD_DAR_VEC4(vthread_t thr, vvp_code_t cp)
vvp_darray*darray = obj->get_object().peek<vvp_darray>();
vvp_vector4_t word;
if (darray)
if (darray &&
(adr >= 0) && (thr->flags[4] == BIT4_0)) // A defined address >= 0
darray->get_word(adr, word);
else
word = vvp_vector4_t(obj->size());