kgdb.h

  1/* SPDX-License-Identifier: GPL-2.0-only */
  2
  3#ifndef __ASM_KGDB_H_
  4#define __ASM_KGDB_H_
  5
  6#include <linux/build_bug.h>
  7
  8#ifdef __KERNEL__
  9
 10#define GDB_SIZEOF_REG sizeof(unsigned long)
 11
 12#define DBG_MAX_REG_NUM 36
 13#define NUMREGBYTES (DBG_MAX_REG_NUM * GDB_SIZEOF_REG)
 14#define CACHE_FLUSH_IS_SAFE     1
 15#define BUFMAX                  2048
 16static_assert(BUFMAX > NUMREGBYTES,
 17	      "As per KGDB documentation, BUFMAX must be larger than NUMREGBYTES");
 18#ifdef CONFIG_RISCV_ISA_C
 19#define BREAK_INSTR_SIZE	2
 20#else
 21#define BREAK_INSTR_SIZE	4
 22#endif
 23
 24#ifndef	__ASSEMBLER__
 25
 26void arch_kgdb_breakpoint(void);
 27extern unsigned long kgdb_compiled_break;
 28
 29#endif /* !__ASSEMBLER__ */
 30
 31#define DBG_REG_ZERO "zero"
 32#define DBG_REG_RA "ra"
 33#define DBG_REG_SP "sp"
 34#define DBG_REG_GP "gp"
 35#define DBG_REG_TP "tp"
 36#define DBG_REG_T0 "t0"
 37#define DBG_REG_T1 "t1"
 38#define DBG_REG_T2 "t2"
 39#define DBG_REG_FP "fp"
 40#define DBG_REG_S1 "s1"
 41#define DBG_REG_A0 "a0"
 42#define DBG_REG_A1 "a1"
 43#define DBG_REG_A2 "a2"
 44#define DBG_REG_A3 "a3"
 45#define DBG_REG_A4 "a4"
 46#define DBG_REG_A5 "a5"
 47#define DBG_REG_A6 "a6"
 48#define DBG_REG_A7 "a7"
 49#define DBG_REG_S2 "s2"
 50#define DBG_REG_S3 "s3"
 51#define DBG_REG_S4 "s4"
 52#define DBG_REG_S5 "s5"
 53#define DBG_REG_S6 "s6"
 54#define DBG_REG_S7 "s7"
 55#define DBG_REG_S8 "s8"
 56#define DBG_REG_S9 "s9"
 57#define DBG_REG_S10 "s10"
 58#define DBG_REG_S11 "s11"
 59#define DBG_REG_T3 "t3"
 60#define DBG_REG_T4 "t4"
 61#define DBG_REG_T5 "t5"
 62#define DBG_REG_T6 "t6"
 63#define DBG_REG_EPC "pc"
 64#define DBG_REG_STATUS "sstatus"
 65#define DBG_REG_BADADDR "stval"
 66#define DBG_REG_CAUSE "scause"
 67
 68#define DBG_REG_ZERO_OFF 0
 69#define DBG_REG_RA_OFF 1
 70#define DBG_REG_SP_OFF 2
 71#define DBG_REG_GP_OFF 3
 72#define DBG_REG_TP_OFF 4
 73#define DBG_REG_T0_OFF 5
 74#define DBG_REG_T1_OFF 6
 75#define DBG_REG_T2_OFF 7
 76#define DBG_REG_FP_OFF 8
 77#define DBG_REG_S1_OFF 9
 78#define DBG_REG_A0_OFF 10
 79#define DBG_REG_A1_OFF 11
 80#define DBG_REG_A2_OFF 12
 81#define DBG_REG_A3_OFF 13
 82#define DBG_REG_A4_OFF 14
 83#define DBG_REG_A5_OFF 15
 84#define DBG_REG_A6_OFF 16
 85#define DBG_REG_A7_OFF 17
 86#define DBG_REG_S2_OFF 18
 87#define DBG_REG_S3_OFF 19
 88#define DBG_REG_S4_OFF 20
 89#define DBG_REG_S5_OFF 21
 90#define DBG_REG_S6_OFF 22
 91#define DBG_REG_S7_OFF 23
 92#define DBG_REG_S8_OFF 24
 93#define DBG_REG_S9_OFF 25
 94#define DBG_REG_S10_OFF 26
 95#define DBG_REG_S11_OFF 27
 96#define DBG_REG_T3_OFF 28
 97#define DBG_REG_T4_OFF 29
 98#define DBG_REG_T5_OFF 30
 99#define DBG_REG_T6_OFF 31
100#define DBG_REG_EPC_OFF 32
101#define DBG_REG_STATUS_OFF 33
102#define DBG_REG_BADADDR_OFF 34
103#define DBG_REG_CAUSE_OFF 35
104/* NOTE: increase DBG_MAX_REG_NUM if you add more values here. */
105
106extern const char riscv_gdb_stub_feature[64];
107
108#define kgdb_arch_gdb_stub_feature riscv_gdb_stub_feature
109
110#endif
111#endif