| /* 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__ */ |