void kp_cdata_dump(ktap_state_t *ks, ktap_cdata_t *cd)
{
switch (cd_type(ks, cd)) {
case FFI_UINT8: case FFI_INT8:
kp_printf(ks, "c int(0x%01x)", cd_int(cd));
break;
case FFI_UINT16: case FFI_INT16:
kp_printf(ks, "c int(0x%02x)", cd_int(cd));
break;
case FFI_UINT32: case FFI_INT32:
kp_printf(ks, "c int(0x%04x)", cd_int(cd));
break;
case FFI_UINT64: case FFI_INT64:
kp_printf(ks, "c int(0x%08x)", cd_int(cd));
break;
case FFI_PTR:
kp_printf(ks, "c pointer(0x%p)", cd_ptr(cd));
break;
case FFI_STRUCT:
kp_printf(ks, "c struct(0x%p)", cd_struct(cd));
break;
case FFI_UNION:
kp_printf(ks, "c union(0x%p)", cd_union(cd));
break;
default:
kp_printf(ks, "unsupported cdata type %d!\n", cd_type(ks, cd));
}
}
void kp_cdata_record_get(ktap_state *ks, ktap_cdata *cd,
ktap_value *key, ktap_value *val)
{
const char *mb_name;
csymbol *cs, *mb_cs;
csymbol_struct *csst;
struct_member *mb;
char *addr;
csymbol_id mb_cs_id;
if (!is_shrstring(key)) {
kp_error(ks, "struct member name should be string\n");
return;
}
mb_name = svalue(key);
cs = cd_csym(ks, cd);
csst = csym_struct(cs);
mb = csymst_mb_by_name(ks, csst, mb_name);
if (mb == NULL) {
kp_error(ks, "struct member %s doesn't exist\n", mb_name);
return;
}
mb_cs_id = mb->id;
mb_cs = id_to_csym(ks, mb_cs_id);
addr = cd_struct(cd);
addr += csym_record_mb_offset_by_name(ks, cs, mb_name);
kp_cdata_init(ks, val, addr, mb->len, mb_cs_id);
if (mb->len < 0)
kp_cdata_pack(ks, val, addr, mb_cs);
}
ktap_cdata *kp_cdata_new_record(ktap_state *ks, void *val, csymbol_id id)
{
ktap_cdata *cd;
size_t size;
cd = kp_cdata_new(ks, id);
/* if val == NULL, allocate new empty space */
if (val == NULL) {
size = csym_size(ks, id_to_csym(ks, id));
cd_struct(cd) = kp_rawobj_alloc(ks, size);
} else
cd_struct(cd) = val;
return cd;
}
static void kp_cdata_value(ktap_state *ks, ktap_value *val, void **out_addr,
size_t *out_size, void **temp)
{
struct ktap_cdata *cd;
csymbol *cs;
ffi_type type;
switch (ttypenv(val)) {
case KTAP_TYPE_BOOLEAN:
*out_addr = &bvalue(val);
*out_size = sizeof(int);
return;
case KTAP_TYPE_LIGHTUSERDATA:
*out_addr = pvalue(val);
*out_size = sizeof(void *);
return;
case KTAP_TYPE_NUMBER:
*out_addr = &nvalue(val);
*out_size = sizeof(ktap_number);
return;
case KTAP_TYPE_STRING:
*temp = (void *)svalue(val);
*out_addr = temp;
*out_size = sizeof(void *);
return;
}
cd = cdvalue(val);
cs = cd_csym(ks, cd);
type = csym_type(cs);
*out_size = csym_size(ks, cs);
switch (type) {
case FFI_VOID:
kp_error(ks, "Error: Cannot copy data from void type\n");
return;
case FFI_UINT8:
case FFI_INT8:
case FFI_UINT16:
case FFI_INT16:
case FFI_UINT32:
case FFI_INT32:
case FFI_UINT64:
case FFI_INT64:
*out_addr = &cd_int(cd);
return;
case FFI_PTR:
*out_addr = &cd_ptr(cd);
return;
case FFI_STRUCT:
case FFI_UNION:
*out_addr = cd_struct(cd);
return;
case FFI_FUNC:
case FFI_UNKNOWN:
kp_error(ks, "Error: internal error for csymbol %s\n",
csym_name(cs));
return;
}
}
