arm64: add support for building vmlinux as a relocatable PIE binary

[firefly-linux-kernel-4.4.55.git] / arch / arm64 / kernel / vmlinux.lds.S

diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
index 1ee2c3937d4e8badf3ccec9a816ad23f9814506f..e3f6cd740ea346bd887f01e2b46a558d8075d966 100644 (file)
--- a/arch/arm64/kernel/vmlinux.lds.S
+++ b/arch/arm64/kernel/vmlinux.lds.S
@@ -5,6 +5,7 @@
  */
 
 #include <asm-generic/vmlinux.lds.h>
+#include <asm/cache.h>
 #include <asm/kernel-pgtable.h>
 #include <asm/thread_info.h>
 #include <asm/memory.h>
@@ -86,15 +87,16 @@ SECTIONS
                EXIT_CALL
                *(.discard)
                *(.discard.*)
+               *(.interp .dynamic)
        }
 
-       . = PAGE_OFFSET + TEXT_OFFSET;
+       . = KIMAGE_VADDR + TEXT_OFFSET;
 
        .head.text : {
                _text = .;
                HEAD_TEXT
        }
-       ALIGN_DEBUG_RO
+       ALIGN_DEBUG_RO_MIN(PAGE_SIZE)
        .text : {                       /* Real text segment            */
                _stext = .;             /* Text and read-only data      */
                        __exception_text_start = .;
@@ -112,14 +114,12 @@ SECTIONS
                *(.got)                 /* Global offset table          */
        }
 
-       ALIGN_DEBUG_RO
        RO_DATA(PAGE_SIZE)
        EXCEPTION_TABLE(8)
        NOTES
-       ALIGN_DEBUG_RO
-       _etext = .;                     /* End of text and rodata section */
 
        ALIGN_DEBUG_RO_MIN(PAGE_SIZE)
+       _etext = .;                     /* End of text and rodata section */
        __init_begin = .;
 
        INIT_TEXT_SECTION(8)
@@ -127,7 +127,6 @@ SECTIONS
                ARM_EXIT_KEEP(EXIT_TEXT)
        }
 
-       ALIGN_DEBUG_RO_MIN(16)
        .init.data : {
                INIT_DATA
                INIT_SETUP(16)
@@ -140,10 +139,7 @@ SECTIONS
                ARM_EXIT_KEEP(EXIT_DATA)
        }
 
-       PERCPU_SECTION(64)
-
-       . = ALIGN(PAGE_SIZE);
-       __init_end = .;
+       PERCPU_SECTION(L1_CACHE_BYTES)
 
        . = ALIGN(4);
        .altinstructions : {
@@ -154,11 +150,28 @@ SECTIONS
        .altinstr_replacement : {
                *(.altinstr_replacement)
        }
+       .rela : ALIGN(8) {
+               __reloc_start = .;
+               *(.rela .rela*)
+               __reloc_end = .;
+       }
+       .dynsym : ALIGN(8) {
+               __dynsym_start = .;
+               *(.dynsym)
+       }
+       .dynstr : {
+               *(.dynstr)
+       }
+       .hash : {
+               *(.hash)
+       }
 
        . = ALIGN(PAGE_SIZE);
+       __init_end = .;
+
        _data = .;
        _sdata = .;
-       RW_DATA_SECTION(64, PAGE_SIZE, THREAD_SIZE)
+       RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
        PECOFF_EDATA_PADDING
        _edata = .;
 
@@ -189,4 +202,4 @@ ASSERT(__idmap_text_end - (__idmap_text_start & ~(SZ_4K - 1)) <= SZ_4K,
 /*
  * If padding is applied before .head.text, virt<->phys conversions will fail.
  */
-ASSERT(_text == (PAGE_OFFSET + TEXT_OFFSET), "HEAD is misaligned")
+ASSERT(_text == (KIMAGE_VADDR + TEXT_OFFSET), "HEAD is misaligned")