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Diffstat (limited to 'arch/powerpc/kernel/vmlinux.lds.S')
-rw-r--r--arch/powerpc/kernel/vmlinux.lds.S61
1 files changed, 35 insertions, 26 deletions
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 2f793be3d2b1..b1a250560198 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -8,6 +8,12 @@
#include <asm/cache.h>
#include <asm/thread_info.h>
+#ifdef CONFIG_STRICT_KERNEL_RWX
+#define STRICT_ALIGN_SIZE (1 << 24)
+#else
+#define STRICT_ALIGN_SIZE PAGE_SIZE
+#endif
+
ENTRY(_stext)
PHDRS {
@@ -58,7 +64,6 @@ SECTIONS
#ifdef CONFIG_PPC64
KEEP(*(.head.text.first_256B));
#ifdef CONFIG_PPC_BOOK3E
-# define END_FIXED 0x100
#else
KEEP(*(.head.text.real_vectors));
*(.head.text.real_trampolines);
@@ -66,12 +71,8 @@ SECTIONS
*(.head.text.virt_trampolines);
# if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
KEEP(*(.head.data.fwnmi_page));
-# define END_FIXED 0x8000
-# else
-# define END_FIXED 0x7000
# endif
#endif
- ASSERT((. == END_FIXED), "vmlinux.lds.S: fixed section overflow error");
#else /* !CONFIG_PPC64 */
HEAD_TEXT
#endif
@@ -79,23 +80,6 @@ SECTIONS
__head_end = .;
- /*
- * If the build dies here, it's likely code in head_64.S is referencing
- * labels it can't reach, and the linker inserting stubs without the
- * assembler's knowledge. To debug, remove the above assert and
- * rebuild. Look for branch stubs in the fixed section region.
- *
- * Linker stub generation could be allowed in "trampoline"
- * sections if absolutely necessary, but this would require
- * some rework of the fixed sections. Before resorting to this,
- * consider references that have sufficient addressing range,
- * (e.g., hand coded trampolines) so the linker does not have
- * to add stubs.
- *
- * Linker stubs at the top of the main text section are currently not
- * detected, and will result in a crash at boot due to offsets being
- * wrong.
- */
#ifdef CONFIG_PPC64
/*
* BLOCK(0) overrides the default output section alignment because
@@ -103,18 +87,31 @@ SECTIONS
* section placement to work.
*/
.text BLOCK(0) : AT(ADDR(.text) - LOAD_OFFSET) {
+#ifdef CONFIG_LD_HEAD_STUB_CATCH
+ *(.linker_stub_catch);
+ . = . ;
+#endif
+
#else
.text : AT(ADDR(.text) - LOAD_OFFSET) {
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
KPROBES_TEXT
IRQENTRY_TEXT
SOFTIRQENTRY_TEXT
+ /*
+ * -Os builds call FP save/restore functions. The powerpc64
+ * linker generates those on demand in the .sfpr section.
+ * .sfpr gets placed at the beginning of a group of input
+ * sections, which can break start-of-text offset if it is
+ * included with the main text sections, so put it by itself.
+ */
+ *(.sfpr);
MEM_KEEP(init.text)
MEM_KEEP(exit.text)
@@ -132,7 +129,7 @@ SECTIONS
PROVIDE32 (etext = .);
/* Read-only data */
- RODATA
+ RO_DATA(PAGE_SIZE)
EXCEPTION_TABLE(0)
@@ -149,7 +146,7 @@ SECTIONS
/*
* Init sections discarded at runtime
*/
- . = ALIGN(PAGE_SIZE);
+ . = ALIGN(STRICT_ALIGN_SIZE);
__init_begin = .;
INIT_TEXT_SECTION(PAGE_SIZE) :kernel
@@ -267,7 +264,9 @@ SECTIONS
.data : AT(ADDR(.data) - LOAD_OFFSET) {
DATA_DATA
*(.sdata)
+ *(.sdata2)
*(.got.plt) *(.got)
+ *(.plt)
}
#else
.data : AT(ADDR(.data) - LOAD_OFFSET) {
@@ -330,6 +329,16 @@ 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)
+ }
}