Changeset 9ded977 in mainline for kernel

Timestamp:

2010-07-27T16:10:42Z (15 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

3629481

Parents:

142084b2

Message:

add initial support for line debugging information and generating disassembly outputs with source code intermixed (useful for analyzing of stack traces)
currently the disassembly and source is intermixed only in the case of amd64 kernel (other linker scripts strip the debugging sections so far)

Location:

kernel

Files:

• Makefile (modified) (2 diffs)
• arch/amd64/_link.ld.in (modified) (1 diff)

kernel/Makefile

@@ -120 +120 @@
 ifeq ($(CONFIG_LTO),y)
         GCC_CFLAGS += -flto
+endif
+
+ifeq ($(CONFIG_LINE_DEBUG),y)
+        GCC_CFLAGS += -g
+        ICC_CFLAGS += -g
+        SUNCC_CFLAGS += -g
+        CLANG_CFLAGS += -g
 endif
 
@@ -401 +408 @@
 
 $(DISASM): $(RAW)
+ifeq ($(CONFIG_LINE_DEBUG),y)
+        $(OBJDUMP) -d -S $< > $@
+else
         $(OBJDUMP) -d $< > $@
+endif
 
 $(RAW): $(LINK) $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) $(SYMTAB_OBJECTS)

kernel/arch/amd64/_link.ld.in

@@ -53 +53 @@
         }
         
+#ifdef CONFIG_LINE_DEBUG
+        .comment 0 : { *(.comment); }
+        .debug_abbrev 0 : { *(.debug_abbrev); }
+        .debug_aranges 0 : { *(.debug_aranges); }
+        .debug_info 0 : { *(.debug_info); }
+        .debug_line 0 : { *(.debug_line); }
+        .debug_loc 0 : { *(.debug_loc); }
+        .debug_pubnames 0 : { *(.debug_pubnames); }
+        .debug_pubtypes 0 : { *(.debug_pubtypes); }
+        .debug_ranges 0 : { *(.debug_ranges); }
+        .debug_str 0 : { *(.debug_str); }
+#endif
+        
         /DISCARD/ : {
                 *(*);