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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-03 14:31:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-03 14:31:24 -0700 |
| commit | be82ae0238b0453afcf4a76f0512b7dde34ba500 (patch) | |
| tree | aaa3f5f11fd51fd73365ee1a2164aad9a03de060 /arch/arm/include/asm/kexec.h | |
| parent | 4b4fd27c0b5ec638a1f06ced9226fd95229dbbf0 (diff) | |
| parent | 7b70c4275f28702b76b273c8534c38f8313812e9 (diff) | |
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (291 commits)
ARM: AMBA: Add pclk support to AMBA bus infrastructure
ARM: 6278/2: fix regression in RealView after the introduction of pclk
ARM: 6277/1: mach-shmobile: Allow users to select HZ, default to 128
ARM: 6276/1: mach-shmobile: remove duplicate NR_IRQS_LEGACY
ARM: 6246/1: mmci: support larger MMCIDATALENGTH register
ARM: 6245/1: mmci: enable hardware flow control on Ux500 variants
ARM: 6244/1: mmci: add variant data and default MCICLOCK support
ARM: 6243/1: mmci: pass power_mode to the translate_vdd callback
ARM: 6274/1: add global control registers definition header file for nuc900
mx2_camera: fix type of dma buffer virtual address pointer
mx2_camera: Add soc_camera support for i.MX25/i.MX27
arm/imx/gpio: add spinlock protection
ARM: Add support for the LPC32XX arch
ARM: LPC32XX: Arch config menu supoport and makefiles
ARM: LPC32XX: Phytec 3250 platform support
ARM: LPC32XX: Misc support functions
ARM: LPC32XX: Serial support code
ARM: LPC32XX: System suspend support
ARM: LPC32XX: GPIO, timer, and IRQ drivers
ARM: LPC32XX: Clock driver
...
Diffstat (limited to 'arch/arm/include/asm/kexec.h')
| -rw-r--r-- | arch/arm/include/asm/kexec.h | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/arch/arm/include/asm/kexec.h b/arch/arm/include/asm/kexec.h index df15a0dc228e..8ec9ef5c3c7b 100644 --- a/arch/arm/include/asm/kexec.h +++ b/arch/arm/include/asm/kexec.h @@ -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__ */ |