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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-24 09:01:44 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-24 09:01:44 -0700 |
| commit | a6b49cb210f878709bdc0bddc16a853f18790d02 (patch) | |
| tree | 6147078ef0ce584cb6a8dae7468f060ef5838d12 /arch/microblaze/kernel/hw_exception_handler.S | |
| parent | 2c9871de0ae89a0e2c365ea6e277135fe031d8b4 (diff) | |
| parent | bfc8125858d777bd5bdba03a091c07cc2e0e17c0 (diff) | |
| download | linux-rt-a6b49cb210f878709bdc0bddc16a853f18790d02.tar.gz | |
Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: (24 commits)
microblaze: Disable heartbeat/enable emaclite in defconfigs
microblaze: Support simpleImage.dts make target
microblaze: Fix _start symbol to physical address
microblaze: Use LOAD_OFFSET macro to get correct LMA for all sections
microblaze: Create the LOAD_OFFSET macro used to compute VMA vs LMA offsets
microblaze: Copy ppc asm-compat.h for clean handling of constants in asm and C
microblaze: Actually show KiB rather than pages in "Freeing initrd memory:"
microblaze: Support ptrace syscall tracing.
microblaze: Updated CPU version and FPGA family codes in PVR
microblaze: Generate correct signal and siginfo for integer div-by-zero
microblaze: Don't be noisy when userspace causes hardware exceptions
microblaze: Remove ipc.h file which points to non-existing asm-generic file
microblaze: Clear sticky FSR register after generating exception signals
microblaze: Ensure CPU usermode is set on new userspace processes
microblaze: Use correct kbuild variable KBUILD_CFLAGS
microblaze: Save and restore msr in hw exception
microblaze: Add architectural support for USB EHCI host controllers
microblaze: Implement include/asm/syscall.h.
microblaze: Improve checking mechanism for MSR instruction
microblaze: Add checking mechanism for MSR instruction
...
Diffstat (limited to 'arch/microblaze/kernel/hw_exception_handler.S')
| -rw-r--r-- | arch/microblaze/kernel/hw_exception_handler.S | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/microblaze/kernel/hw_exception_handler.S b/arch/microblaze/kernel/hw_exception_handler.S index 3288c9737671..6b0288ebccd6 100644 --- a/arch/microblaze/kernel/hw_exception_handler.S +++ b/arch/microblaze/kernel/hw_exception_handler.S @@ -84,9 +84,10 @@ #define NUM_TO_REG(num) r ## num #ifdef CONFIG_MMU -/* FIXME you can't change first load of MSR because there is - * hardcoded jump bri 4 */ #define RESTORE_STATE \ + lwi r5, r1, 0; \ + mts rmsr, r5; \ + nop; \ lwi r3, r1, PT_R3; \ lwi r4, r1, PT_R4; \ lwi r5, r1, PT_R5; \ @@ -309,6 +310,9 @@ _hw_exception_handler: lwi r31, r0, TOPHYS(PER_CPU(CURRENT_SAVE)) /* get saved current */ #endif + mfs r5, rmsr; + nop + swi r5, r1, 0; mfs r3, resr nop mfs r4, rear; @@ -380,6 +384,8 @@ handle_other_ex: /* Handle Other exceptions here */ addk r8, r17, r0; /* Load exception address */ bralid r15, full_exception; /* Branch to the handler */ nop; + mts r0, rfsr; /* Clear sticky fsr */ + nop /* * Trigger execution of the signal handler by enabling |