From 3835d69a6c7048a28d0aea3cb8403d5e83a0f867 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 6 Jul 2011 10:39:34 +0100 Subject: [PATCH] ARM: vmlinux.lds: move init sections between text and data sections Place the init sections between the text and data sections. This means all code is grouped together at the beginning of the kernel image, and all data is at the end of the image. This avoids problems with the 24-bit branch instruction relocations becoming invalid with large initramfs images. Acked-by: Nicolas Pitre Tested-by: Stephen Boyd Signed-off-by: Russell King --- arch/arm/kernel/vmlinux.lds.S | 96 +++++++++++++++++------------------ arch/arm/mm/init.c | 4 +- 2 files changed, 50 insertions(+), 50 deletions(-) diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index fa812d03ff47..18574b7dbc14 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -69,6 +69,53 @@ SECTIONS _stext = .; HEAD_TEXT } + .text : { /* Real text segment */ + _text = .; /* Text and read-only data */ + __exception_text_start = .; + *(.exception.text) + __exception_text_end = .; + IRQENTRY_TEXT + TEXT_TEXT + SCHED_TEXT + LOCK_TEXT + KPROBES_TEXT +#ifdef CONFIG_MMU + *(.fixup) +#endif + *(.gnu.warning) + *(.glue_7) + *(.glue_7t) + . = ALIGN(4); + *(.got) /* Global offset table */ + ARM_CPU_KEEP(PROC_INFO) + } + + RO_DATA(PAGE_SIZE) + +#ifdef CONFIG_ARM_UNWIND + /* + * Stack unwinding tables + */ + . = ALIGN(8); + .ARM.unwind_idx : { + __start_unwind_idx = .; + *(.ARM.exidx*) + __stop_unwind_idx = .; + } + .ARM.unwind_tab : { + __start_unwind_tab = .; + *(.ARM.extab*) + __stop_unwind_tab = .; + } +#endif + + _etext = .; /* End of text and rodata section */ + +#ifndef CONFIG_XIP_KERNEL + . = ALIGN(PAGE_SIZE); + __init_begin = .; +#endif + INIT_TEXT_SECTION(8) .exit.text : { ARM_EXIT_KEEP(EXIT_TEXT) @@ -116,58 +163,11 @@ SECTIONS PERCPU_SECTION(32) -#ifndef CONFIG_XIP_KERNEL - __init_begin = _stext; - . = ALIGN(PAGE_SIZE); - __init_end = .; -#endif - - .text : { /* Real text segment */ - _text = .; /* Text and read-only data */ - __exception_text_start = .; - *(.exception.text) - __exception_text_end = .; - IRQENTRY_TEXT - TEXT_TEXT - SCHED_TEXT - LOCK_TEXT - KPROBES_TEXT -#ifdef CONFIG_MMU - *(.fixup) -#endif - *(.gnu.warning) - *(.glue_7) - *(.glue_7t) - . = ALIGN(4); - *(.got) /* Global offset table */ - ARM_CPU_KEEP(PROC_INFO) - } - - RO_DATA(PAGE_SIZE) - -#ifdef CONFIG_ARM_UNWIND - /* - * Stack unwinding tables - */ - . = ALIGN(8); - .ARM.unwind_idx : { - __start_unwind_idx = .; - *(.ARM.exidx*) - __stop_unwind_idx = .; - } - .ARM.unwind_tab : { - __start_unwind_tab = .; - *(.ARM.extab*) - __stop_unwind_tab = .; - } -#endif - - _etext = .; /* End of text and rodata section */ - #ifdef CONFIG_XIP_KERNEL __data_loc = ALIGN(4); /* location in binary */ . = PAGE_OFFSET + TEXT_OFFSET; #else + __init_end = .; . = ALIGN(THREAD_SIZE); __data_loc = .; #endif diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index c19571c40a21..b8e891243153 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -639,8 +639,8 @@ void __init mem_init(void) " pkmap : 0x%08lx - 0x%08lx (%4ld MB)\n" #endif " modules : 0x%08lx - 0x%08lx (%4ld MB)\n" - " .init : 0x%p" " - 0x%p" " (%4d kB)\n" " .text : 0x%p" " - 0x%p" " (%4d kB)\n" + " .init : 0x%p" " - 0x%p" " (%4d kB)\n" " .data : 0x%p" " - 0x%p" " (%4d kB)\n" " .bss : 0x%p" " - 0x%p" " (%4d kB)\n", @@ -662,8 +662,8 @@ void __init mem_init(void) #endif MLM(MODULES_VADDR, MODULES_END), - MLK_ROUNDUP(__init_begin, __init_end), MLK_ROUNDUP(_text, _etext), + MLK_ROUNDUP(__init_begin, __init_end), MLK_ROUNDUP(_sdata, _edata), MLK_ROUNDUP(__bss_start, __bss_stop));