From 97a5ed2071fffe85ee1a07e0655740162e4cce64 Mon Sep 17 00:00:00 2001 From: Eric Botcazou Date: Tue, 6 Jul 2021 16:47:31 +0200 Subject: [PATCH] [Ada] Small optimization to DWARF 5 mode in System.Dwarf_Line gcc/ada/ * libgnat/s-dwalin.adb (To_File_Name): Fetch only the last string from the .debug_line_str section. (Symbolic_Address.Set_Result): Likewise. --- gcc/ada/libgnat/s-dwalin.adb | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/gcc/ada/libgnat/s-dwalin.adb b/gcc/ada/libgnat/s-dwalin.adb index 74700e68bfc..4bcd741c92c 100644 --- a/gcc/ada/libgnat/s-dwalin.adb +++ b/gcc/ada/libgnat/s-dwalin.adb @@ -957,8 +957,10 @@ package body System.Dwarf_Lines is when DW_FORM_line_strp => Read_Section_Offset (C.Lines, Off, C.Header.Is64); - Seek (C.Line_Str, Off); - Read_C_String (C.Line_Str, Buf); + if J = File then + Seek (C.Line_Str, Off); + Read_C_String (C.Line_Str, Buf); + end if; when others => raise Dwarf_Error with "DWARF form not implemented"; @@ -1674,8 +1676,10 @@ package body System.Dwarf_Lines is when DW_FORM_line_strp => Read_Section_Offset (C.Lines, Off, C.Header.Is64); - Seek (C.Line_Str, Off); - File_Name := Read_C_String (C.Line_Str); + if J = Match.File then + Seek (C.Line_Str, Off); + File_Name := Read_C_String (C.Line_Str); + end if; when others => raise Dwarf_Error with "DWARF form not implemented"; @@ -1718,8 +1722,10 @@ package body System.Dwarf_Lines is when DW_FORM_line_strp => Read_Section_Offset (C.Lines, Off, C.Header.Is64); - Seek (C.Line_Str, Off); - Dir_Name := Read_C_String (C.Line_Str); + if J = Dir_Idx then + Seek (C.Line_Str, Off); + Dir_Name := Read_C_String (C.Line_Str); + end if; when others => raise Dwarf_Error with "DWARF form not implemented";