@@ -98,6 +98,7 @@ endif
LDFLAGS_vmlinux-y := -Bstatic
LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie
LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y)
+LDFLAGS_vmlinux += $(call ld-option,--orphan-handling=warn)
ifeq ($(CONFIG_PPC64),y)
ifeq ($(call cc-option-yn,-mcmodel=medium),y)
@@ -86,7 +86,7 @@ SECTIONS
ALIGN_FUNCTION();
#endif
/* careful! __ftr_alt_* sections need to be close to .text */
- *(.text .fixup __ftr_alt_* .ref.text)
+ *(.text.hot .text .text.fixup .text.unlikely .fixup __ftr_alt_* .ref.text);
SCHED_TEXT
CPUIDLE_TEXT
LOCK_TEXT
@@ -253,7 +253,9 @@ SECTIONS
.data : AT(ADDR(.data) - LOAD_OFFSET) {
DATA_DATA
*(.sdata)
+ *(.sdata2)
*(.got.plt) *(.got)
+ *(.plt)
}
#else
.data : AT(ADDR(.data) - LOAD_OFFSET) {
@@ -316,6 +318,16 @@ SECTIONS
_end = . ;
PROVIDE32 (end = .);
- /* Sections to be discarded. */
+ STABS_DEBUG
+
+ DWARF_DEBUG
+
DISCARDS
+ /DISCARD/ : {
+ *(*.EMB.apuinfo)
+ *(.glink .iplt .plt .rela* .comment)
+ *(.gnu.version*)
+ *(.gnu.attributes)
+ *(.eh_frame)
+ }
}
@@ -596,6 +596,7 @@
#define SBSS(sbss_align) \
. = ALIGN(sbss_align); \
.sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \
+ *(.dynsbss) \
*(.sbss) \
*(.scommon) \
}
@@ -642,11 +643,22 @@
.debug_str 0 : { *(.debug_str) } \
.debug_loc 0 : { *(.debug_loc) } \
.debug_macinfo 0 : { *(.debug_macinfo) } \
+ .debug_pubtypes 0 : { *(.debug_pubtypes) } \
+ /* DWARF 3 */ \
+ .debug_ranges 0 : { *(.debug_ranges) } \
/* SGI/MIPS DWARF 2 extensions */ \
.debug_weaknames 0 : { *(.debug_weaknames) } \
.debug_funcnames 0 : { *(.debug_funcnames) } \
.debug_typenames 0 : { *(.debug_typenames) } \
.debug_varnames 0 : { *(.debug_varnames) } \
+ /* GNU DWARF 2 extensions */ \
+ .debug_gnu_pubnames 0 : { *(.debug_gnu_pubnames) } \
+ .debug_gnu_pubtypes 0 : { *(.debug_gnu_pubtypes) } \
+ /* DWARF 4 */ \
+ .debug_types 0 : { *(.debug_types) } \
+ /* DWARF 5 */ \
+ .debug_macro 0 : { *(.debug_macro) } \
+ .debug_addr 0 : { *(.debug_addr) }
/* Stabs debugging sections. */
#define STABS_DEBUG \
Add --orphan-handling=warn to final link flags. This ensures we can handle all sections explicitly. This would have caught subtle breakage such as 7de3b27bac47da9de08409df1d69664acbb72197 at build-time. Also bring existing orphan sections into the fold: - .text.hot and .text.unlikely are compiler generated sections. - .sdata2, .dynsbss, .plt are used by PPC32 - We previously did not specify DWARF_DEBUG or STABS_DEBUG - DWARF_DEBUG did not include all DWARF sections that can be emitted - A number of sections are unused and can be discarded. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/powerpc/Makefile | 1 + arch/powerpc/kernel/vmlinux.lds.S | 16 ++++++++++++++-- include/asm-generic/vmlinux.lds.h | 12 ++++++++++++ 3 files changed, 27 insertions(+), 2 deletions(-)