From bff595c15c92b9c5c8f3d32edefcef6c3cbdd59f Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Mon, 16 Feb 2009 11:41:36 +0100 Subject: [ARM] 5383/2: unwind: Add core support for ARM stack unwinding This patch adds the main functionality for parsing the stack unwinding information generated by the ARM EABI toolchains. The unwinding information consists of an index with a pair of words per function and a table with unwinding instructions. For more information, see "Exception Handling ABI for the ARM Architecture" at: http://infocenter.arm.com/help/topic/com.arm.doc.subset.swdev.abi/index.html Signed-off-by: Catalin Marinas Signed-off-by: Russell King --- arch/arm/kernel/vmlinux.lds.S | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'arch/arm/kernel/vmlinux.lds.S') diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index 00216071eaf..5f664599c94 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -80,6 +80,8 @@ SECTIONS EXIT_TEXT EXIT_DATA *(.exitcall.exit) + *(.ARM.exidx.exit.text) + *(.ARM.extab.exit.text) #ifndef CONFIG_MMU *(.fixup) *(__ex_table) @@ -110,6 +112,23 @@ SECTIONS _etext = .; /* End of text and rodata section */ +#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 + #ifdef CONFIG_XIP_KERNEL __data_loc = ALIGN(4); /* location in binary */ . = PAGE_OFFSET + TEXT_OFFSET; -- cgit v1.2.3