diff options
Diffstat (limited to 'arch/arc/include/asm/kgdb.h')
| -rw-r--r-- | arch/arc/include/asm/kgdb.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/arc/include/asm/kgdb.h b/arch/arc/include/asm/kgdb.h new file mode 100644 index 000000000..f9f71b909 --- /dev/null +++ b/arch/arc/include/asm/kgdb.h @@ -0,0 +1,60 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * kgdb support for ARC + * + * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com) + */ + +#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__ */ |