From 19c4d593f0b4bd46f6d923a3e514719982a22058 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Fri, 21 May 2010 18:06:42 +0100 Subject: ARM: ARMv7-M: Add support for exception handling MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch implements the exception handling for the ARMv7-M architecture (pretty different from the A or R profiles). It bases on work done earlier by Catalin for 2.6.33 but was nearly completely rewritten to use a pt_regs layout compatible to the A profile. Signed-off-by: Catalin Marinas Reviewed-by: Jonathan Austin Tested-by: Jonathan Austin Signed-off-by: Uwe Kleine-König --- arch/arm/kernel/entry-common.S | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/arm/kernel/entry-common.S') diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 3248cde504ed..c45e0027613b 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -339,6 +339,9 @@ ENDPROC(ftrace_stub) .align 5 ENTRY(vector_swi) +#ifdef CONFIG_CPU_V7M + v7m_exception_entry +#else sub sp, sp, #S_FRAME_SIZE stmia sp, {r0 - r12} @ Calling r0 - r12 ARM( add r8, sp, #S_PC ) @@ -349,6 +352,7 @@ ENTRY(vector_swi) str lr, [sp, #S_PC] @ Save calling PC str r8, [sp, #S_PSR] @ Save CPSR str r0, [sp, #S_OLD_R0] @ Save OLD_R0 +#endif zero_fp /* -- cgit