linux-toradex.git/arch/arm/kernel/unwind.c, branch v2.6.34.7 Linux kernel for Apalis and Colibri modules ARM: 5977/1: arm: Enable backtrace printing on oops when PC is corrupted 2010-03-07T10:22:00+00:00 Laurent Pinchart laurent.pinchart@ideasonboard.com 2010-03-04T14:33:16+00:00 51d47999b9452a8dc7ae58a11423c5db28f21ae1 If PC points outside kernel text, start printing the backtrace at LR instead. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
If PC points outside kernel text, start printing the backtrace at LR
instead.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: 5776/1: Check compiler version and EABI support when adding ARM unwind support. 2009-11-02T16:59:45+00:00 Claudio Scordino claudio@evidence.eu.com 2009-10-30T11:06:05+00:00 6603a4fd5195a004dec5f9568e38ff76bae630c1 ARM unwind is known to compile only with EABI and not-buggy compilers. The problem is not the unwinding information but the -fno-frame-pointer option added as a result of !CONFIG_FRAME_POINTER. Now we check the compiler and raise a #warning in case of wrong compiler. Signed-off-by: Claudio Scordino <claudio@evidence.eu.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
ARM unwind is known to compile only with EABI and not-buggy compilers.
The problem is not the unwinding information but the -fno-frame-pointer
option added as a result of !CONFIG_FRAME_POINTER.  Now we check the
compiler and raise a #warning in case of wrong compiler.

Signed-off-by: Claudio Scordino <claudio@evidence.eu.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Thumb-2: Implementation of the unified start-up and exceptions code 2009-07-24T11:32:54+00:00 Catalin Marinas catalin.marinas@arm.com 2009-07-24T11:32:54+00:00 b86040a59feb255a8193173caa4d5199464433d5 This patch implements the ARM/Thumb-2 unified kernel start-up and exception handling code. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> 
This patch implements the ARM/Thumb-2 unified kernel start-up and
exception handling code.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
[ARM] 5558/1: Add extra checks to ARM unwinder to avoid tracing corrupt stacks 2009-06-19T15:44:22+00:00 Catalin Marinas catalin.marinas@arm.com 2009-06-19T15:42:11+00:00 c894ed6956f126d60d888e8efc5fb3a595ba89ae There are situations where the unwinder goes beyond stack boundaries and unwinds random data. This patch moves the stack boundaries check after the unwind_exec_insn() call and adds an extra check for possible infinite loops (like "mov pc, lr" with pc == lr). The patch also fixes a bug in the unwind instructions interpreter. The 0xb0 instruction can only set PC to LR if this wasn't already set by a previous instruction (this is used on exceptions taken while in kernel mode where svc_entry is annotated with ".save {r0 - pc}"). Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
There are situations where the unwinder goes beyond stack boundaries and
unwinds random data. This patch moves the stack boundaries check after
the unwind_exec_insn() call and adds an extra check for possible
infinite loops (like "mov pc, lr" with pc == lr).

The patch also fixes a bug in the unwind instructions interpreter. The
0xb0 instruction can only set PC to LR if this wasn't already set by
a previous instruction (this is used on exceptions taken while in kernel
mode where svc_entry is annotated with ".save {r0 - pc}").

Tested-by: Tony Lindgren <tony@atomide.com>

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
[ARM] 5383/2: unwind: Add core support for ARM stack unwinding 2009-02-19T11:26:24+00:00 Catalin Marinas catalin.marinas@arm.com 2009-02-16T10:41:36+00:00 bff595c15c92b9c5c8f3d32edefcef6c3cbdd59f 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> 
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>