user/sven/linux.git/arch/mips/kernel/branch.c, branch v3.3.4

MIPS Kprobes: Refactor branch emulation

2011-12-07T22:04:03Z

This patch refactors MIPS branch emulation code so as to allow skipping delay slot instruction in case of branch likely instructions when branch is not taken. This is useful for keeping the code common for use cases like kprobes where one would like to handle the branch instructions keeping the delay slot instuction also in picture for branch likely instructions. Also allow emulation when instruction to be decoded is not at pt_regs->cp0_epc as in case of kprobes where pt_regs->cp0_epc points to the breakpoint instruction. The patch also exports the function for modules. Signed-off-by: Maneesh Soni Signed-off-by: Victor Kamensky Cc: David Daney Cc: ananth@in.ibm.com Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2913/ Signed-off-by: Ralf Baechle

MIPS: Sanitize restart logics

2010-10-18T15:59:02Z

Put the original syscall number into ->regs[0] when we leave syscall with error. Use it in restart logics. Everything else will have it 0 since we pass through SAVE_SOME on all the ways in. Note that in places like bad_stack and inllegal_syscall we leave it 0 - it's not restartable. Signed-off-by: Al Viro Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1698/ Signed-off-by: Ralf Baechle

MIPS: Compute branch returns for Cavium OCTEON specific branch instructions.

2009-01-11T09:57:24Z

For Cavium OCTEON, compute the return epc value for OCTEON specific branch instructions. Signed-off-by: Tomaso Paoletti Signed-off-by: David Daney Signed-off-by: Ralf Baechle

[MIPS] Add some __user tags

2007-07-13T16:40:01Z

Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle

[MIPS] Unify mips_fpu_soft_struct and mips_fpu_hard_structs.

2006-06-19T16:39:18Z

The struct mips_fpu_soft_struct and mips_fpu_hard_struct are completely same now and the kernel fpu emulator assumes that. This patch unifies them to mips_fpu_struct and get rid of mips_fpu_union. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle

[MIPS] Fix branch emulation for floating-point exceptions.

2006-04-27T14:13:50Z

In the branch emulation for floating-point exceptions, __compute_return_epc must determine for bc1f et al which condition code bit to test. This is based on bits <4:2> of the rt field. The switch statement to distinguish bc1f et al needs to use only the two low bits of rt, but the old code tests on the whole rt field. This patch masks off the proper bits. Signed-off-by: Win Treese Signed-off-by: Ralf Baechle

Support the MIPS32 / MIPS64 DSP ASE.

2005-10-29T18:31:17Z

Signed-off-by: Ralf Baechle

__compute_return_epc() uses CFC1 instruction which might result in a

2005-10-29T18:31:13Z

coprocessor unusable exception since the process can lose its fpu context by preemption. Signed-off-by: Ralf Baechle

[PATCH] MIPS mega-patch

2004-02-20T09:33:18Z

From: Ralf Baechle Below following 125547 lines of patches, all to arch/mips and include/asm-mips. I'm going to send the remaining stuff of which the one or other bit may need to be discussed in smaller bits.

[PATCH] MIPS update

2003-07-31T15:40:55Z

Here's another MIPS update. The patch is huge because it completly folds mips64 into mips, thereby eleminating 41010 lines of code.