65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
/*
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* The PowerPC (32/64) specific defines / externs for KGDB. Based on
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* the previous 32bit and 64bit specific files, which had the following
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* copyrights:
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*
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* PPC64 Mods (C) 2005 Frank Rowand (frowand@mvista.com)
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* PPC Mods (C) 2004 Tom Rini (trini@mvista.com)
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* PPC Mods (C) 2003 John Whitney (john.whitney@timesys.com)
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* PPC Mods (C) 1998 Michael Tesch (tesch@cs.wisc.edu)
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*
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*
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* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
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* Author: Tom Rini <trini@kernel.crashing.org>
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*
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* 2006 (c) MontaVista Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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#ifdef __KERNEL__
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#ifndef __POWERPC_KGDB_H__
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#define __POWERPC_KGDB_H__
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#ifndef __ASSEMBLY__
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#define BREAK_INSTR_SIZE 4
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#define BUFMAX ((NUMREGBYTES * 2) + 512)
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#define OUTBUFMAX ((NUMREGBYTES * 2) + 512)
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static inline void arch_kgdb_breakpoint(void)
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{
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asm(".long 0x7d821008"); /* twge r2, r2 */
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}
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#define CACHE_FLUSH_IS_SAFE 1
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#define DBG_MAX_REG_NUM 70
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/* The number bytes of registers we have to save depends on a few
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* things. For 64bit we default to not including vector registers and
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* vector state registers. */
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#ifdef CONFIG_PPC64
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/*
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* 64 bit (8 byte) registers:
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* 32 gpr, 32 fpr, nip, msr, link, ctr
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* 32 bit (4 byte) registers:
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* ccr, xer, fpscr
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*/
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#define NUMREGBYTES ((68 * 8) + (3 * 4))
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#define NUMCRITREGBYTES 184
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#else /* CONFIG_PPC32 */
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/* On non-E500 family PPC32 we determine the size by picking the last
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* register we need, but on E500 we skip sections so we list what we
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* need to store, and add it up. */
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#ifndef CONFIG_E500
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#define MAXREG (PT_FPSCR+1)
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#else
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/* 32 GPRs (8 bytes), nip, msr, ccr, link, ctr, xer, acc (8 bytes), spefscr*/
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#define MAXREG ((32*2)+6+2+1)
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#endif
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#define NUMREGBYTES (MAXREG * sizeof(int))
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/* CR/LR, R1, R2, R13-R31 inclusive. */
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#define NUMCRITREGBYTES (23 * sizeof(int))
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#endif /* 32/64 */
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#endif /* !(__ASSEMBLY__) */
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#endif /* !__POWERPC_KGDB_H__ */
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#endif /* __KERNEL__ */
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