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33d71d26 | 1 | /* |
17ce452f JW |
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) | |
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9 | * PPC Mods (C) 1998 Michael Tesch (tesch@cs.wisc.edu) |
10 | * | |
17ce452f | 11 | * |
33d71d26 | 12 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) |
17ce452f JW |
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. | |
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19 | */ |
20 | #ifdef __KERNEL__ | |
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21 | #ifndef __POWERPC_KGDB_H__ |
22 | #define __POWERPC_KGDB_H__ | |
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23 | |
24 | #ifndef __ASSEMBLY__ | |
25 | ||
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26 | #define BREAK_INSTR_SIZE 4 |
27 | #define BUFMAX ((NUMREGBYTES * 2) + 512) | |
28 | #define OUTBUFMAX ((NUMREGBYTES * 2) + 512) | |
fb978ca2 CL |
29 | |
30 | #define BREAK_INSTR 0x7d821008 /* twge r2, r2 */ | |
31 | ||
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32 | static inline void arch_kgdb_breakpoint(void) |
33 | { | |
fb978ca2 | 34 | asm(stringify_in_c(.long BREAK_INSTR)); |
17ce452f JW |
35 | } |
36 | #define CACHE_FLUSH_IS_SAFE 1 | |
ff10b88b | 37 | #define DBG_MAX_REG_NUM 70 |
33d71d26 | 38 | |
17ce452f JW |
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 | |
33d71d26 | 43 | /* |
17ce452f JW |
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 | |
33d71d26 | 48 | */ |
17ce452f JW |
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 */ | |
33d71d26 | 65 | #endif /* !(__ASSEMBLY__) */ |
17ce452f | 66 | #endif /* !__POWERPC_KGDB_H__ */ |
33d71d26 | 67 | #endif /* __KERNEL__ */ |