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For undefined memory words (size == 0) return an X vector.

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If a memory word was accessed before it was defined the
code was returning a zero width vector result. Now it
returns an appropriately sized vector of 'x'.
This commit is contained in:
Cary R
2008-06-05 10:34:18 -07:00
committed by Stephen Williams
parent 17a1358eb6
commit 1c51ac4ac0
1 changed files with 16 additions and 4 deletions
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vvp/array.cc
+16 -4
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@@ -354,9 +354,14 @@ static void vpi_array_var_word_get_value(vpiHandle ref, p_vpi_value value)
assert(obj);
unsigned index = decode_array_word_pointer(obj, parent);
unsigned width = parent->vals_width;
vpip_vec4_get_value(parent->vals[index], parent->vals_width,
false, value);
/* If we don't have a value yet just return X. */
if (parent->vals[index].size() == 0) {
vpip_vec4_get_value(vvp_vector4_t(width), width, false, value);
} else {
vpip_vec4_get_value(parent->vals[index], width, false, value);
}
}
static vpiHandle vpi_array_var_word_put_value(vpiHandle ref, p_vpi_value vp, int flags)
@@ -493,8 +498,15 @@ static void vpi_array_vthr_A_get_value(vpiHandle ref, p_vpi_value value)
assert(parent->vals);
assert(obj->address < parent->array_count);
vpip_vec4_get_value(parent->vals[obj->address],
parent->vals_width, false, value);
unsigned index = obj->address;
unsigned width = parent->vals_width;
/* If we don't have a value yet just return X. */
if (parent->vals[index].size() == 0) {
vpip_vec4_get_value(vvp_vector4_t(width), width, false, value);
} else {
vpip_vec4_get_value(parent->vals[index], width, false, value);
}
}
static vpiHandle vpi_array_vthr_A_put_value(vpiHandle ref, p_vpi_value vp, int)