+ uiout->field_fmt (fld, "%u", val);
+}
+
+/* A range of source lines. */
+
+struct btrace_line_range
+{
+ /* The symtab this line is from. */
+ struct symtab *symtab;
+
+ /* The first line (inclusive). */
+ int begin;
+
+ /* The last line (exclusive). */
+ int end;
+};
+
+/* Construct a line range. */
+
+static struct btrace_line_range
+btrace_mk_line_range (struct symtab *symtab, int begin, int end)
+{
+ struct btrace_line_range range;
+
+ range.symtab = symtab;
+ range.begin = begin;
+ range.end = end;
+
+ return range;
+}
+
+/* Add a line to a line range. */
+
+static struct btrace_line_range
+btrace_line_range_add (struct btrace_line_range range, int line)
+{
+ if (range.end <= range.begin)
+ {
+ /* This is the first entry. */
+ range.begin = line;
+ range.end = line + 1;
+ }
+ else if (line < range.begin)
+ range.begin = line;
+ else if (range.end < line)
+ range.end = line;
+
+ return range;
+}
+
+/* Return non-zero if RANGE is empty, zero otherwise. */
+
+static int
+btrace_line_range_is_empty (struct btrace_line_range range)
+{
+ return range.end <= range.begin;
+}
+
+/* Return non-zero if LHS contains RHS, zero otherwise. */
+
+static int
+btrace_line_range_contains_range (struct btrace_line_range lhs,
+ struct btrace_line_range rhs)
+{
+ return ((lhs.symtab == rhs.symtab)
+ && (lhs.begin <= rhs.begin)
+ && (rhs.end <= lhs.end));
+}
+
+/* Find the line range associated with PC. */
+
+static struct btrace_line_range
+btrace_find_line_range (CORE_ADDR pc)
+{
+ struct btrace_line_range range;
+ struct linetable_entry *lines;
+ struct linetable *ltable;
+ struct symtab *symtab;
+ int nlines, i;
+
+ symtab = find_pc_line_symtab (pc);
+ if (symtab == NULL)
+ return btrace_mk_line_range (NULL, 0, 0);
+
+ ltable = SYMTAB_LINETABLE (symtab);
+ if (ltable == NULL)
+ return btrace_mk_line_range (symtab, 0, 0);
+
+ nlines = ltable->nitems;
+ lines = ltable->item;
+ if (nlines <= 0)
+ return btrace_mk_line_range (symtab, 0, 0);
+
+ range = btrace_mk_line_range (symtab, 0, 0);
+ for (i = 0; i < nlines - 1; i++)
+ {
+ if ((lines[i].pc == pc) && (lines[i].line != 0))
+ range = btrace_line_range_add (range, lines[i].line);
+ }
+
+ return range;
+}
+
+/* Print source lines in LINES to UIOUT.
+
+ UI_ITEM_CHAIN is a cleanup chain for the last source line and the
+ instructions corresponding to that source line. When printing a new source
+ line, we do the cleanups for the open chain and open a new cleanup chain for
+ the new source line. If the source line range in LINES is not empty, this
+ function will leave the cleanup chain for the last printed source line open
+ so instructions can be added to it. */
+
+static void
+btrace_print_lines (struct btrace_line_range lines, struct ui_out *uiout,
+ struct cleanup **ui_item_chain, int flags)
+{
+ print_source_lines_flags psl_flags;
+ int line;
+
+ psl_flags = 0;
+ if (flags & DISASSEMBLY_FILENAME)
+ psl_flags |= PRINT_SOURCE_LINES_FILENAME;
+
+ for (line = lines.begin; line < lines.end; ++line)
+ {
+ if (*ui_item_chain != NULL)
+ do_cleanups (*ui_item_chain);
+
+ *ui_item_chain
+ = make_cleanup_ui_out_tuple_begin_end (uiout, "src_and_asm_line");
+
+ print_source_lines (lines.symtab, line, line + 1, psl_flags);
+
+ make_cleanup_ui_out_list_begin_end (uiout, "line_asm_insn");
+ }