linux/include/asm-ppc64/sstep.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

25 lines
980 B
C

/*
* Copyright (C) 2004 Paul Mackerras <paulus@au.ibm.com>, IBM
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
struct pt_regs;
/*
* We don't allow single-stepping an mtmsrd that would clear
* MSR_RI, since that would make the exception unrecoverable.
* Since we need to single-step to proceed from a breakpoint,
* we don't allow putting a breakpoint on an mtmsrd instruction.
* Similarly we don't allow breakpoints on rfid instructions.
* These macros tell us if an instruction is a mtmsrd or rfid.
*/
#define IS_MTMSRD(instr) (((instr) & 0xfc0007fe) == 0x7c000164)
#define IS_RFID(instr) (((instr) & 0xfc0007fe) == 0x4c000024)
/* Emulate instructions that cause a transfer of control. */
extern int emulate_step(struct pt_regs *regs, unsigned int instr);