static void
cfi_add_CFA_insn(int insn)
{
struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
insn_ptr->insn = insn;
}
static void
cfi_add_CFA_insn_offset (int insn, offsetT offset)
{
struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
insn_ptr->insn = insn;
insn_ptr->u.i = offset;
}
static void
cfi_add_CFA_insn_reg (int insn, unsigned regno)
{
struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
insn_ptr->insn = insn;
insn_ptr->u.r = regno;
}
static void
cfi_add_CFA_insn_reg_offset (int insn, unsigned regno, offsetT offset)
{
struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
insn_ptr->insn = insn;
insn_ptr->u.ri.reg = regno;
insn_ptr->u.ri.offset = offset;
}
static void
cfi_add_CFA_insn_reg_reg (int insn, unsigned reg1, unsigned reg2)
{
struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data ();
insn_ptr->insn = insn;
insn_ptr->u.rr.reg1 = reg1;
insn_ptr->u.rr.reg2 = reg2;
}
void
cfi_add_advance_loc (symbolS *label)
{
struct cfi_insn_data *insn = alloc_cfi_insn_data ();
insn->insn = DW_CFA_advance_loc;
insn->u.ll.lab1 = frchain_now->frch_cfi_data->last_address;
insn->u.ll.lab2 = label;
frchain_now->frch_cfi_data->last_address = label;
}
static void
dot_cfi_escape (int ignored ATTRIBUTE_UNUSED)
{
struct cfi_escape_data *head, **tail, *e;
struct cfi_insn_data *insn;
if (frchain_now->frch_cfi_data == NULL)
{
as_bad (_("CFI instruction used without previous .cfi_startproc"));
ignore_rest_of_line ();
return;
}
/* If the last address was not at the current PC, advance to current. */
if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now
|| S_GET_VALUE (frchain_now->frch_cfi_data->last_address)
!= frag_now_fix ())
cfi_add_advance_loc (symbol_temp_new_now ());
tail = &head;
do
{
e = xmalloc (sizeof (*e));
do_parse_cons_expression (&e->exp, 1);
*tail = e;
tail = &e->next;
}
while (*input_line_pointer++ == ',');
*tail = NULL;
insn = alloc_cfi_insn_data ();
insn->insn = CFI_escape;
insn->u.esc = head;
--input_line_pointer;
demand_empty_rest_of_line ();
}
static void
dot_cfi_val_encoded_addr (int ignored ATTRIBUTE_UNUSED)
{
struct cfi_insn_data *insn_ptr;
offsetT encoding;
if (frchain_now->frch_cfi_data == NULL)
{
as_bad (_("CFI instruction used without previous .cfi_startproc"));
ignore_rest_of_line ();
return;
}
/* If the last address was not at the current PC, advance to current. */
if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now
|| S_GET_VALUE (frchain_now->frch_cfi_data->last_address)
!= frag_now_fix ())
cfi_add_advance_loc (symbol_temp_new_now ());
insn_ptr = alloc_cfi_insn_data ();
insn_ptr->insn = CFI_val_encoded_addr;
insn_ptr->u.ea.reg = cfi_parse_reg ();
cfi_parse_separator ();
encoding = cfi_parse_const ();
if ((encoding & 0xff) != encoding
|| ((encoding & 0x70) != 0
#if CFI_DIFF_EXPR_OK || defined tc_cfi_emit_pcrel_expr
&& (encoding & 0x70) != DW_EH_PE_pcrel
#endif
)
/* leb128 can be handled, but does something actually need it? */
|| (encoding & 7) == DW_EH_PE_uleb128
|| (encoding & 7) > DW_EH_PE_udata8)
{
as_bad (_("invalid or unsupported encoding in .cfi_lsda"));
encoding = DW_EH_PE_omit;
}
cfi_parse_separator ();
expression_and_evaluate (&insn_ptr->u.ea.exp);
switch (insn_ptr->u.ea.exp.X_op)
{
case O_symbol:
break;
case O_constant:
if ((encoding & 0x70) != DW_EH_PE_pcrel)
break;
default:
encoding = DW_EH_PE_omit;
break;
}
insn_ptr->u.ea.encoding = encoding;
if (encoding == DW_EH_PE_omit)
{
as_bad (_("wrong third argument to .cfi_val_encoded_addr"));
ignore_rest_of_line ();
return;
}
demand_empty_rest_of_line ();
}