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Commit 24b776bf authored by Mika Westerberg's avatar Mika Westerberg Committed by Russell King
Browse files

ARM: 6117/1: kdump: implement crash_setup_regs() 



Implement machine specific function crash_setup_regs() which is
responsible for storing machine state when crash occured.

Signed-off-by: default avatarMika Westerberg <ext-mika.1.westerberg@nokia.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 3c57fb43

arch/arm/include/asm/kexec.h

+19 −3
Original line number Diff line number Diff line
@@ -19,10 +19,26 @@ 


#ifndef __ASSEMBLY__



struct kimage;

/* Provide a dummy definition to avoid build failures. */

/**

 * crash_setup_regs() - save registers for the panic kernel

 * @newregs: registers are saved here

 * @oldregs: registers to be saved (may be %NULL)

 *

 * Function copies machine registers from @oldregs to @newregs. If @oldregs is

 * %NULL then current registers are stored there.

 */

static inline void crash_setup_regs(struct pt_regs *newregs,

                                        struct pt_regs *oldregs) { }

				    struct pt_regs *oldregs)

{

	if (oldregs) {

		memcpy(newregs, oldregs, sizeof(*newregs));

	} else {

		__asm__ __volatile__ ("stmia %0, {r0 - r15}"

				      : : "r" (&newregs->ARM_r0));

		__asm__ __volatile__ ("mrs %0, cpsr"

				      : "=r" (newregs->ARM_cpsr));

	}

}



#endif /* __ASSEMBLY__ */