cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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kgdb.h (2156B)

      1/*
      2 * The PowerPC (32/64) specific defines / externs for KGDB.  Based on
      3 * the previous 32bit and 64bit specific files, which had the following
      4 * copyrights:
      5 *
      6 * PPC64 Mods (C) 2005 Frank Rowand (frowand@mvista.com)
      7 * PPC Mods (C) 2004 Tom Rini (trini@mvista.com)
      8 * PPC Mods (C) 2003 John Whitney (john.whitney@timesys.com)
      9 * PPC Mods (C) 1998 Michael Tesch (tesch@cs.wisc.edu)
     10 *
     11 *
     12 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
     13 * Author: Tom Rini <trini@kernel.crashing.org>
     14 *
     15 * 2006 (c) MontaVista Software, Inc. This file is licensed under
     16 * the terms of the GNU General Public License version 2. This program
     17 * is licensed "as is" without any warranty of any kind, whether express
     18 * or implied.
     19 */
     20#ifdef __KERNEL__
     21#ifndef __POWERPC_KGDB_H__
     22#define __POWERPC_KGDB_H__
     23
     24#ifndef __ASSEMBLY__
     25
     26#define BREAK_INSTR_SIZE	4
     27#define BUFMAX			((NUMREGBYTES * 2) + 512)
     28#define OUTBUFMAX		((NUMREGBYTES * 2) + 512)
     29
     30#define BREAK_INSTR		0x7d821008	/* twge r2, r2 */
     31
     32static inline void arch_kgdb_breakpoint(void)
     33{
     34	asm(stringify_in_c(.long BREAK_INSTR));
     35}
     36#define CACHE_FLUSH_IS_SAFE	1
     37#define DBG_MAX_REG_NUM     70
     38
     39/* The number bytes of registers we have to save depends on a few
     40 * things.  For 64bit we default to not including vector registers and
     41 * vector state registers. */
     42#ifdef CONFIG_PPC64
     43/*
     44 * 64 bit (8 byte) registers:
     45 *   32 gpr, 32 fpr, nip, msr, link, ctr
     46 * 32 bit (4 byte) registers:
     47 *   ccr, xer, fpscr
     48 */
     49#define NUMREGBYTES		((68 * 8) + (3 * 4))
     50#define NUMCRITREGBYTES		184
     51#else /* CONFIG_PPC32 */
     52/* On non-E500 family PPC32 we determine the size by picking the last
     53 * register we need, but on E500 we skip sections so we list what we
     54 * need to store, and add it up. */
     55#ifndef CONFIG_E500
     56#define MAXREG			(PT_FPSCR+1)
     57#else
     58/* 32 GPRs (8 bytes), nip, msr, ccr, link, ctr, xer, acc (8 bytes), spefscr*/
     59#define MAXREG                 ((32*2)+6+2+1)
     60#endif
     61#define NUMREGBYTES		(MAXREG * sizeof(int))
     62/* CR/LR, R1, R2, R13-R31 inclusive. */
     63#define NUMCRITREGBYTES		(23 * sizeof(int))
     64#endif /* 32/64 */
     65#endif /* !(__ASSEMBLY__) */
     66#endif /* !__POWERPC_KGDB_H__ */
     67#endif /* __KERNEL__ */