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/*
* kgdb support for ARC
*
* Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ARC_KGDB_H__
#define __ARC_KGDB_H__
#ifdef CONFIG_KGDB
#include <asm/ptrace.h>
/* to ensure compatibility with Linux 2.6.35, we don't implement the get/set
* register API yet */
#undef DBG_MAX_REG_NUM
#define GDB_MAX_REGS 87
#define BREAK_INSTR_SIZE 2
#define CACHE_FLUSH_IS_SAFE 1
#define NUMREGBYTES (GDB_MAX_REGS * 4)
#define BUFMAX 2048
static inline void arch_kgdb_breakpoint(void)
{
__asm__ __volatile__ ("trap_s 0x4\n");
}
extern void kgdb_trap(struct pt_regs *regs);
/* This is the numbering of registers according to the GDB. See GDB's
* arc-tdep.h for details.
*
* Registers are ordered for GDB 7.5. It is incompatible with GDB 6.8. */
enum arc_linux_regnums {
_R0 = 0,
_R1, _R2, _R3, _R4, _R5, _R6, _R7, _R8, _R9, _R10, _R11, _R12, _R13,
_R14, _R15, _R16, _R17, _R18, _R19, _R20, _R21, _R22, _R23, _R24,
_R25, _R26,
_FP = 27,
__SP = 28,
_R30 = 30,
_BLINK = 31,
_LP_COUNT = 60,
_STOP_PC = 64,
_RET = 64,
_LP_START = 65,
_LP_END = 66,
_STATUS32 = 67,
_ECR = 76,
_BTA = 82,
};
#else
#define kgdb_trap(regs)
#endif
#endif /* __ARC_KGDB_H__ */