diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-08-02 03:30:45 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-08-02 03:30:45 +0400 |
| commit | 9a2533c3eb91b3e769c2612c5d68e811bfc0ecf6 (patch) | |
| tree | 74865c4c40442d109e42bcc72009ebd0c320eba3 /arch/arm/vfp/entry.S | |
| parent | d4fdc32517efaab0493c134d5cc070c252d51275 (diff) | |
| parent | b74253f78400f9a4b42da84bb1de7540b88ce7c4 (diff) | |
| download | linux-9a2533c3eb91b3e769c2612c5d68e811bfc0ecf6.tar.xz | |
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
"This fixes various issues found during July"
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: 7479/1: mm: avoid NULL dereference when flushing gate_vma with VIVT caches
ARM: Fix undefined instruction exception handling
ARM: 7480/1: only call smp_send_stop() on SMP
ARM: 7478/1: errata: extend workaround for erratum #720789
ARM: 7477/1: vfp: Always save VFP state in vfp_pm_suspend on UP
ARM: 7476/1: vfp: only clear vfp state for current cpu in vfp_pm_suspend
ARM: 7468/1: ftrace: Trace function entry before updating index
ARM: 7467/1: mutex: use generic xchg-based implementation for ARMv6+
ARM: 7466/1: disable interrupt before spinning endlessly
ARM: 7465/1: Handle >4GB memory sizes in device tree and mem=size@start option
Diffstat (limited to 'arch/arm/vfp/entry.S')
| -rw-r--r-- | arch/arm/vfp/entry.S | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/arch/arm/vfp/entry.S b/arch/arm/vfp/entry.S index 4fa9903b83cf..cc926c985981 100644 --- a/arch/arm/vfp/entry.S +++ b/arch/arm/vfp/entry.S @@ -7,18 +7,20 @@ * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. - * - * Basic entry code, called from the kernel's undefined instruction trap. - * r0 = faulted instruction - * r5 = faulted PC+4 - * r9 = successful return - * r10 = thread_info structure - * lr = failure return */ #include <asm/thread_info.h> #include <asm/vfpmacros.h> #include "../kernel/entry-header.S" +@ VFP entry point. +@ +@ r0 = instruction opcode (32-bit ARM or two 16-bit Thumb) +@ r2 = PC value to resume execution after successful emulation +@ r9 = normal "successful" return address +@ r10 = this threads thread_info structure +@ lr = unrecognised instruction return address +@ IRQs disabled. +@ ENTRY(do_vfp) #ifdef CONFIG_PREEMPT ldr r4, [r10, #TI_PREEMPT] @ get preempt count |