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authorCatalin Marinas <catalin.marinas@arm.com>2009-02-16 11:41:36 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-02-19 11:26:24 +0000
commitbff595c15c92b9c5c8f3d32edefcef6c3cbdd59f (patch)
tree182cc7840fbd09630d273f18d5b7720655bb4a37 /arch/arm/kernel/vmlinux.lds.S
parent2d7c11bfc91637e5f9bc5f8c9a82aaffcc0e97aa (diff)
downloadop-kernel-dev-bff595c15c92b9c5c8f3d32edefcef6c3cbdd59f.zip
op-kernel-dev-bff595c15c92b9c5c8f3d32edefcef6c3cbdd59f.tar.gz
[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 <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/vmlinux.lds.S')
-rw-r--r--arch/arm/kernel/vmlinux.lds.S19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 0021607..5f66459 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;
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