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| author |   James Morris <jmorris@namei.org> | 2010-01-18 09:56:22 +1100 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2010-01-18 09:56:22 +1100 |
| commit | 2457552d1e6f3183cd93f81c49a8da5fe8bb0e42 (patch) | |
| tree | 7ca46caa910012d75617700e4083b3657053cb31 /arch/mips/kernel/unaligned.c | |
| parent | selinux: change the handling of unknown classes (diff) | |
| parent | page allocator: update NR_FREE_PAGES only when necessary (diff) | |
| download | linux-dev-2457552d1e6f3183cd93f81c49a8da5fe8bb0e42.tar.xz linux-dev-2457552d1e6f3183cd93f81c49a8da5fe8bb0e42.zip | |
Merge branch 'master' into next
Diffstat (limited to 'arch/mips/kernel/unaligned.c')
| -rw-r--r-- | arch/mips/kernel/unaligned.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/arch/mips/kernel/unaligned.c b/arch/mips/kernel/unaligned.c index 67bd626942ab..69b039ca8d83 100644 --- a/arch/mips/kernel/unaligned.c +++ b/arch/mips/kernel/unaligned.c @@ -81,6 +81,7 @@ #include <asm/asm.h> #include <asm/branch.h> #include <asm/byteorder.h> +#include <asm/cop2.h> #include <asm/inst.h> #include <asm/uaccess.h> #include <asm/system.h> @@ -451,17 +452,27 @@ static void emulate_load_store_insn(struct pt_regs *regs, */ goto sigbus; + /* + * COP2 is available to implementor for application specific use. + * It's up to applications to register a notifier chain and do + * whatever they have to do, including possible sending of signals. + */ case lwc2_op: + cu2_notifier_call_chain(CU2_LWC2_OP, regs); + break; + case ldc2_op: + cu2_notifier_call_chain(CU2_LDC2_OP, regs); + break; + case swc2_op: + cu2_notifier_call_chain(CU2_SWC2_OP, regs); + break; + case sdc2_op: - /* - * These are the coprocessor 2 load/stores. The current - * implementations don't use cp2 and cp2 should always be - * disabled in c0_status. So send SIGILL. - * (No longer true: The Sony Praystation uses cp2 for - * 3D matrix operations. Dunno if that thingy has a MMU ...) - */ + cu2_notifier_call_chain(CU2_SDC2_OP, regs); + break; + default: /* * Pheeee... We encountered an yet unknown instruction or |