For readability, move the zero-sized sections to the end after DISCARDS.
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
arch/x86/boot/compressed/vmlinux.lds.S | 44 +++++++++++++++-----------
1 file changed, 26 insertions(+), 18 deletions(-)
diff --git a/arch/x86/boot/compressed/vmlinux.lds.S b/arch/x86/boot/compressed/vmlinux.lds.S
index 3c2ee9a5bf43..ca544a16724b 100644
--- a/arch/x86/boot/compressed/vmlinux.lds.S
+++ b/arch/x86/boot/compressed/vmlinux.lds.S
@@ -42,19 +42,6 @@ SECTIONS
*(.rodata.*)
_erodata = . ;
}
- .rel.dyn : {
- *(.rel.*)
- }
- .rela.dyn : {
- *(.rela.*)
- }
- .got : {
- *(.got)
- }
- .got.plt : {
- *(.got.plt)
- }
-
.data : {
_data = . ;
*(.data)
@@ -85,13 +72,34 @@ SECTIONS
ELF_DETAILS
DISCARDS
-}
-ASSERT(SIZEOF(.got) == 0, "Unexpected GOT entries detected!")
+ .got.plt (INFO) : {
+ *(.got.plt)
+ }
+ ASSERT(SIZEOF(.got.plt) == 0 ||
#ifdef CONFIG_X86_64
-ASSERT(SIZEOF(.got.plt) == 0 || SIZEOF(.got.plt) == 0x18, "Unexpected GOT/PLT entries detected!")
+ SIZEOF(.got.plt) == 0x18,
#else
-ASSERT(SIZEOF(.got.plt) == 0 || SIZEOF(.got.plt) == 0xc, "Unexpected GOT/PLT entries detected!")
+ SIZEOF(.got.plt) == 0xc,
#endif
+ "Unexpected GOT/PLT entries detected!")
+
+ /*
+ * Sections that should stay zero sized, which is safer to
+ * explicitly check instead of blindly discarding.
+ */
+ .got : {
+ *(.got)
+ }
+ ASSERT(SIZEOF(.got) == 0, "Unexpected GOT entries detected!")
+
+ .rel.dyn : {
+ *(.rel.*)
+ }
+ ASSERT(SIZEOF(.rel.dyn) == 0, "Unexpected run-time relocations (.rel) detected!")
-ASSERT(SIZEOF(.rel.dyn) == 0 && SIZEOF(.rela.dyn) == 0, "Unexpected run-time relocations detected!")
+ .rela.dyn : {
+ *(.rela.*)
+ }
+ ASSERT(SIZEOF(.rela.dyn) == 0, "Unexpected run-time relocations (.rela) detected!")
+}
--
2.25.1
