static void
out_debug_line (segT line_seg)
{
expressionS exp;
symbolS *prologue_end;
symbolS *line_end;
struct line_seg *s;
int sizeof_offset;
sizeof_offset = out_header (line_seg, &exp);
line_end = exp.X_add_symbol;
/* Version. */
out_two (DWARF2_VERSION);
/* Length of the prologue following this length. */
prologue_end = symbol_temp_make ();
exp.X_add_symbol = prologue_end;
exp.X_add_number = - (4 + 2 + 4);
emit_expr (&exp, sizeof_offset);
/* Parameters of the state machine. */
out_byte (DWARF2_LINE_MIN_INSN_LENGTH);
out_byte (DWARF2_LINE_DEFAULT_IS_STMT);
out_byte (DWARF2_LINE_BASE);
out_byte (DWARF2_LINE_RANGE);
out_byte (DWARF2_LINE_OPCODE_BASE);
/* Standard opcode lengths. */
out_byte (0); /* DW_LNS_copy */
out_byte (1); /* DW_LNS_advance_pc */
out_byte (1); /* DW_LNS_advance_line */
out_byte (1); /* DW_LNS_set_file */
out_byte (1); /* DW_LNS_set_column */
out_byte (0); /* DW_LNS_negate_stmt */
out_byte (0); /* DW_LNS_set_basic_block */
out_byte (0); /* DW_LNS_const_add_pc */
out_byte (1); /* DW_LNS_fixed_advance_pc */
out_byte (0); /* DW_LNS_set_prologue_end */
out_byte (0); /* DW_LNS_set_epilogue_begin */
out_byte (1); /* DW_LNS_set_isa */
out_file_list ();
symbol_set_value_now (prologue_end);
/* For each section, emit a statement program. */
for (s = all_segs; s; s = s->next)
if (SEG_NORMAL (s->seg))
process_entries (s->seg, s->head->head);
else
as_warn ("dwarf line number information for %s ignored",
segment_name (s->seg));
symbol_set_value_now (line_end);
}
static void
out_debug_line (segT line_seg)
{
expressionS expr;
symbolS *line_start;
symbolS *prologue_end;
symbolS *line_end;
struct line_seg *s;
enum dwarf2_format d2f;
int sizeof_offset;
subseg_set (line_seg, 0);
line_start = symbol_temp_new_now ();
prologue_end = symbol_temp_make ();
line_end = symbol_temp_make ();
/* Total length of the information for this compilation unit. */
expr.X_op = O_subtract;
expr.X_add_symbol = line_end;
expr.X_op_symbol = line_start;
d2f = DWARF2_FORMAT ();
if (d2f == dwarf2_format_32bit)
{
expr.X_add_number = -4;
emit_expr (&expr, 4);
sizeof_offset = 4;
}
else if (d2f == dwarf2_format_64bit)
{
expr.X_add_number = -12;
out_four (-1);
emit_expr (&expr, 8);
sizeof_offset = 8;
}
else if (d2f == dwarf2_format_64bit_irix)
{
expr.X_add_number = -8;
emit_expr (&expr, 8);
sizeof_offset = 8;
}
else
{
as_fatal (_("internal error: unknown dwarf2 format"));
}
/* Version. */
out_two (2);
/* Length of the prologue following this length. */
expr.X_op = O_subtract;
expr.X_add_symbol = prologue_end;
expr.X_op_symbol = line_start;
expr.X_add_number = - (4 + 2 + 4);
emit_expr (&expr, sizeof_offset);
/* Parameters of the state machine. */
out_byte (DWARF2_LINE_MIN_INSN_LENGTH);
out_byte (DWARF2_LINE_DEFAULT_IS_STMT);
out_byte (DWARF2_LINE_BASE);
out_byte (DWARF2_LINE_RANGE);
out_byte (DWARF2_LINE_OPCODE_BASE);
/* Standard opcode lengths. */
out_byte (0); /* DW_LNS_copy */
out_byte (1); /* DW_LNS_advance_pc */
out_byte (1); /* DW_LNS_advance_line */
out_byte (1); /* DW_LNS_set_file */
out_byte (1); /* DW_LNS_set_column */
out_byte (0); /* DW_LNS_negate_stmt */
out_byte (0); /* DW_LNS_set_basic_block */
out_byte (0); /* DW_LNS_const_add_pc */
out_byte (1); /* DW_LNS_fixed_advance_pc */
out_file_list ();
symbol_set_value_now (prologue_end);
/* For each section, emit a statement program. */
for (s = all_segs; s; s = s->next)
process_entries (s->seg, s->head->head);
symbol_set_value_now (line_end);
}