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| author | Ralf Baechle <ralf@linux-mips.org> | 2009-11-24 02:24:58 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-12-17 02:57:30 +0100 |
| commit | 69f3a7de1f1ec935924b1b13f83812f8b30e92ce (patch) | |
| tree | a5f8a71b9cb3026a44ae7a1564488de8c3d8d2a9 /arch/mips/kernel/unaligned.c | |
| parent | MIPS: Move EARLY_PRINTK to Kconfig.debug (diff) | |
| download | linux-69f3a7de1f1ec935924b1b13f83812f8b30e92ce.tar.xz linux-69f3a7de1f1ec935924b1b13f83812f8b30e92ce.zip | |
MIPS: Modularize COP2 handling
Away with the daemons of ifdef; get ready for future COP2 users.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/708/
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 |