1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1995 Andreas Busse 7 */ 8 #ifndef __ASM_MIPS_GDB_STUB_H 9 #define __ASM_MIPS_GDB_STUB_H 10 11 12 /* 13 * important register numbers 14 */ 15 16 #define REG_EPC 37 17 #define REG_FP 72 18 #define REG_SP 29 19 20 /* 21 * Stack layout for the GDB exception handler 22 * Derived from the stack layout described in asm-mips/stackframe.h 23 * 24 * The first PTRSIZE*6 bytes are argument save space for C subroutines. 25 */ 26 #define NUMREGS 90 27 28 #define GDB_FR_REG0 (PTRSIZE*6) /* 0 */ 29 #define GDB_FR_REG1 ((GDB_FR_REG0) + 8) /* 1 */ 30 #define GDB_FR_REG2 ((GDB_FR_REG1) + 8) /* 2 */ 31 #define GDB_FR_REG3 ((GDB_FR_REG2) + 8) /* 3 */ 32 #define GDB_FR_REG4 ((GDB_FR_REG3) + 8) /* 4 */ 33 #define GDB_FR_REG5 ((GDB_FR_REG4) + 8) /* 5 */ 34 #define GDB_FR_REG6 ((GDB_FR_REG5) + 8) /* 6 */ 35 #define GDB_FR_REG7 ((GDB_FR_REG6) + 8) /* 7 */ 36 #define GDB_FR_REG8 ((GDB_FR_REG7) + 8) /* 8 */ 37 #define GDB_FR_REG9 ((GDB_FR_REG8) + 8) /* 9 */ 38 #define GDB_FR_REG10 ((GDB_FR_REG9) + 8) /* 10 */ 39 #define GDB_FR_REG11 ((GDB_FR_REG10) + 8) /* 11 */ 40 #define GDB_FR_REG12 ((GDB_FR_REG11) + 8) /* 12 */ 41 #define GDB_FR_REG13 ((GDB_FR_REG12) + 8) /* 13 */ 42 #define GDB_FR_REG14 ((GDB_FR_REG13) + 8) /* 14 */ 43 #define GDB_FR_REG15 ((GDB_FR_REG14) + 8) /* 15 */ 44 #define GDB_FR_REG16 ((GDB_FR_REG15) + 8) /* 16 */ 45 #define GDB_FR_REG17 ((GDB_FR_REG16) + 8) /* 17 */ 46 #define GDB_FR_REG18 ((GDB_FR_REG17) + 8) /* 18 */ 47 #define GDB_FR_REG19 ((GDB_FR_REG18) + 8) /* 19 */ 48 #define GDB_FR_REG20 ((GDB_FR_REG19) + 8) /* 20 */ 49 #define GDB_FR_REG21 ((GDB_FR_REG20) + 8) /* 21 */ 50 #define GDB_FR_REG22 ((GDB_FR_REG21) + 8) /* 22 */ 51 #define GDB_FR_REG23 ((GDB_FR_REG22) + 8) /* 23 */ 52 #define GDB_FR_REG24 ((GDB_FR_REG23) + 8) /* 24 */ 53 #define GDB_FR_REG25 ((GDB_FR_REG24) + 8) /* 25 */ 54 #define GDB_FR_REG26 ((GDB_FR_REG25) + 8) /* 26 */ 55 #define GDB_FR_REG27 ((GDB_FR_REG26) + 8) /* 27 */ 56 #define GDB_FR_REG28 ((GDB_FR_REG27) + 8) /* 28 */ 57 #define GDB_FR_REG29 ((GDB_FR_REG28) + 8) /* 29 */ 58 #define GDB_FR_REG30 ((GDB_FR_REG29) + 8) /* 30 */ 59 #define GDB_FR_REG31 ((GDB_FR_REG30) + 8) /* 31 */ 60 61 /* 62 * Saved special registers 63 */ 64 #define GDB_FR_STATUS ((GDB_FR_REG31) + 8) /* 32 */ 65 #define GDB_FR_LO ((GDB_FR_STATUS) + 8) /* 33 */ 66 #define GDB_FR_HI ((GDB_FR_LO) + 8) /* 34 */ 67 #define GDB_FR_BADVADDR ((GDB_FR_HI) + 8) /* 35 */ 68 #define GDB_FR_CAUSE ((GDB_FR_BADVADDR) + 8) /* 36 */ 69 #define GDB_FR_EPC ((GDB_FR_CAUSE) + 8) /* 37 */ 70 71 /* 72 * Saved floating point registers 73 */ 74 #define GDB_FR_FPR0 ((GDB_FR_EPC) + 8) /* 38 */ 75 #define GDB_FR_FPR1 ((GDB_FR_FPR0) + 8) /* 39 */ 76 #define GDB_FR_FPR2 ((GDB_FR_FPR1) + 8) /* 40 */ 77 #define GDB_FR_FPR3 ((GDB_FR_FPR2) + 8) /* 41 */ 78 #define GDB_FR_FPR4 ((GDB_FR_FPR3) + 8) /* 42 */ 79 #define GDB_FR_FPR5 ((GDB_FR_FPR4) + 8) /* 43 */ 80 #define GDB_FR_FPR6 ((GDB_FR_FPR5) + 8) /* 44 */ 81 #define GDB_FR_FPR7 ((GDB_FR_FPR6) + 8) /* 45 */ 82 #define GDB_FR_FPR8 ((GDB_FR_FPR7) + 8) /* 46 */ 83 #define GDB_FR_FPR9 ((GDB_FR_FPR8) + 8) /* 47 */ 84 #define GDB_FR_FPR10 ((GDB_FR_FPR9) + 8) /* 48 */ 85 #define GDB_FR_FPR11 ((GDB_FR_FPR10) + 8) /* 49 */ 86 #define GDB_FR_FPR12 ((GDB_FR_FPR11) + 8) /* 50 */ 87 #define GDB_FR_FPR13 ((GDB_FR_FPR12) + 8) /* 51 */ 88 #define GDB_FR_FPR14 ((GDB_FR_FPR13) + 8) /* 52 */ 89 #define GDB_FR_FPR15 ((GDB_FR_FPR14) + 8) /* 53 */ 90 #define GDB_FR_FPR16 ((GDB_FR_FPR15) + 8) /* 54 */ 91 #define GDB_FR_FPR17 ((GDB_FR_FPR16) + 8) /* 55 */ 92 #define GDB_FR_FPR18 ((GDB_FR_FPR17) + 8) /* 56 */ 93 #define GDB_FR_FPR19 ((GDB_FR_FPR18) + 8) /* 57 */ 94 #define GDB_FR_FPR20 ((GDB_FR_FPR19) + 8) /* 58 */ 95 #define GDB_FR_FPR21 ((GDB_FR_FPR20) + 8) /* 59 */ 96 #define GDB_FR_FPR22 ((GDB_FR_FPR21) + 8) /* 60 */ 97 #define GDB_FR_FPR23 ((GDB_FR_FPR22) + 8) /* 61 */ 98 #define GDB_FR_FPR24 ((GDB_FR_FPR23) + 8) /* 62 */ 99 #define GDB_FR_FPR25 ((GDB_FR_FPR24) + 8) /* 63 */ 100 #define GDB_FR_FPR26 ((GDB_FR_FPR25) + 8) /* 64 */ 101 #define GDB_FR_FPR27 ((GDB_FR_FPR26) + 8) /* 65 */ 102 #define GDB_FR_FPR28 ((GDB_FR_FPR27) + 8) /* 66 */ 103 #define GDB_FR_FPR29 ((GDB_FR_FPR28) + 8) /* 67 */ 104 #define GDB_FR_FPR30 ((GDB_FR_FPR29) + 8) /* 68 */ 105 #define GDB_FR_FPR31 ((GDB_FR_FPR30) + 8) /* 69 */ 106 107 #define GDB_FR_FSR ((GDB_FR_FPR31) + 8) /* 70 */ 108 #define GDB_FR_FIR ((GDB_FR_FSR) + 8) /* 71 */ 109 #define GDB_FR_FRP ((GDB_FR_FIR) + 8) /* 72 */ 110 111 #define GDB_FR_DUMMY ((GDB_FR_FRP) + 8) /* 73, unused ??? */ 112 113 /* 114 * Again, CP0 registers 115 */ 116 #define GDB_FR_CP0_INDEX ((GDB_FR_DUMMY) + 8) /* 74 */ 117 #define GDB_FR_CP0_RANDOM ((GDB_FR_CP0_INDEX) + 8) /* 75 */ 118 #define GDB_FR_CP0_ENTRYLO0 ((GDB_FR_CP0_RANDOM) + 8) /* 76 */ 119 #define GDB_FR_CP0_ENTRYLO1 ((GDB_FR_CP0_ENTRYLO0) + 8) /* 77 */ 120 #define GDB_FR_CP0_CONTEXT ((GDB_FR_CP0_ENTRYLO1) + 8) /* 78 */ 121 #define GDB_FR_CP0_PAGEMASK ((GDB_FR_CP0_CONTEXT) + 8) /* 79 */ 122 #define GDB_FR_CP0_WIRED ((GDB_FR_CP0_PAGEMASK) + 8) /* 80 */ 123 #define GDB_FR_CP0_REG7 ((GDB_FR_CP0_WIRED) + 8) /* 81 */ 124 #define GDB_FR_CP0_REG8 ((GDB_FR_CP0_REG7) + 8) /* 82 */ 125 #define GDB_FR_CP0_REG9 ((GDB_FR_CP0_REG8) + 8) /* 83 */ 126 #define GDB_FR_CP0_ENTRYHI ((GDB_FR_CP0_REG9) + 8) /* 84 */ 127 #define GDB_FR_CP0_REG11 ((GDB_FR_CP0_ENTRYHI) + 8) /* 85 */ 128 #define GDB_FR_CP0_REG12 ((GDB_FR_CP0_REG11) + 8) /* 86 */ 129 #define GDB_FR_CP0_REG13 ((GDB_FR_CP0_REG12) + 8) /* 87 */ 130 #define GDB_FR_CP0_REG14 ((GDB_FR_CP0_REG13) + 8) /* 88 */ 131 #define GDB_FR_CP0_PRID ((GDB_FR_CP0_REG14) + 8) /* 89 */ 132 133 #define GDB_FR_SIZE ((((GDB_FR_CP0_PRID) + 8) + (PTRSIZE-1)) & ~(PTRSIZE-1)) 134 135 #ifndef __ASSEMBLY__ 136 137 /* 138 * This is the same as above, but for the high-level 139 * part of the GDB stub. 140 */ 141 142 struct gdb_regs { 143 /* 144 * Pad bytes for argument save space on the stack 145 * 24/48 Bytes for 32/64 bit code 146 */ 147 unsigned long pad0[6]; 148 149 /* 150 * saved main processor registers 151 */ 152 long reg0, reg1, reg2, reg3, reg4, reg5, reg6, reg7; 153 long reg8, reg9, reg10, reg11, reg12, reg13, reg14, reg15; 154 long reg16, reg17, reg18, reg19, reg20, reg21, reg22, reg23; 155 long reg24, reg25, reg26, reg27, reg28, reg29, reg30, reg31; 156 157 /* 158 * Saved special registers 159 */ 160 long cp0_status; 161 long lo; 162 long hi; 163 long cp0_badvaddr; 164 long cp0_cause; 165 long cp0_epc; 166 167 /* 168 * Saved floating point registers 169 */ 170 long fpr0, fpr1, fpr2, fpr3, fpr4, fpr5, fpr6, fpr7; 171 long fpr8, fpr9, fpr10, fpr11, fpr12, fpr13, fpr14, fpr15; 172 long fpr16, fpr17, fpr18, fpr19, fpr20, fpr21, fpr22, fpr23; 173 long fpr24, fpr25, fpr26, fpr27, fpr28, fpr29, fpr30, fpr31; 174 175 long cp1_fsr; 176 long cp1_fir; 177 178 /* 179 * Frame pointer 180 */ 181 long frame_ptr; 182 long dummy; /* unused */ 183 184 /* 185 * saved cp0 registers 186 */ 187 long cp0_index; 188 long cp0_random; 189 long cp0_entrylo0; 190 long cp0_entrylo1; 191 long cp0_context; 192 long cp0_pagemask; 193 long cp0_wired; 194 long cp0_reg7; 195 long cp0_reg8; 196 long cp0_reg9; 197 long cp0_entryhi; 198 long cp0_reg11; 199 long cp0_reg12; 200 long cp0_reg13; 201 long cp0_reg14; 202 long cp0_prid; 203 }; 204 205 /* 206 * Prototypes 207 */ 208 209 void set_debug_traps(void); 210 void set_async_breakpoint(unsigned long *epc); 211 212 #endif /* !__ASSEMBLY__ */ 213 #endif /* __ASM_MIPS_GDB_STUB_H */ 214