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*5 bytes are argument save space for C subroutines. 25 */ 26#define NUMREGS 90 27 28#define GDB_FR_REG0 (PTRSIZE*5) /* 0 */ 29#define GDB_FR_REG1 ((GDB_FR_REG0) + 4) /* 1 */ 30#define GDB_FR_REG2 ((GDB_FR_REG1) + 4) /* 2 */ 31#define GDB_FR_REG3 ((GDB_FR_REG2) + 4) /* 3 */ 32#define GDB_FR_REG4 ((GDB_FR_REG3) + 4) /* 4 */ 33#define GDB_FR_REG5 ((GDB_FR_REG4) + 4) /* 5 */ 34#define GDB_FR_REG6 ((GDB_FR_REG5) + 4) /* 6 */ 35#define GDB_FR_REG7 ((GDB_FR_REG6) + 4) /* 7 */ 36#define GDB_FR_REG8 ((GDB_FR_REG7) + 4) /* 8 */ 37#define GDB_FR_REG9 ((GDB_FR_REG8) + 4) /* 9 */ 38#define GDB_FR_REG10 ((GDB_FR_REG9) + 4) /* 10 */ 39#define GDB_FR_REG11 ((GDB_FR_REG10) + 4) /* 11 */ 40#define GDB_FR_REG12 ((GDB_FR_REG11) + 4) /* 12 */ 41#define GDB_FR_REG13 ((GDB_FR_REG12) + 4) /* 13 */ 42#define GDB_FR_REG14 ((GDB_FR_REG13) + 4) /* 14 */ 43#define GDB_FR_REG15 ((GDB_FR_REG14) + 4) /* 15 */ 44#define GDB_FR_REG16 ((GDB_FR_REG15) + 4) /* 16 */ 45#define GDB_FR_REG17 ((GDB_FR_REG16) + 4) /* 17 */ 46#define GDB_FR_REG18 ((GDB_FR_REG17) + 4) /* 18 */ 47#define GDB_FR_REG19 ((GDB_FR_REG18) + 4) /* 19 */ 48#define GDB_FR_REG20 ((GDB_FR_REG19) + 4) /* 20 */ 49#define GDB_FR_REG21 ((GDB_FR_REG20) + 4) /* 21 */ 50#define GDB_FR_REG22 ((GDB_FR_REG21) + 4) /* 22 */ 51#define GDB_FR_REG23 ((GDB_FR_REG22) + 4) /* 23 */ 52#define GDB_FR_REG24 ((GDB_FR_REG23) + 4) /* 24 */ 53#define GDB_FR_REG25 ((GDB_FR_REG24) + 4) /* 25 */ 54#define GDB_FR_REG26 ((GDB_FR_REG25) + 4) /* 26 */ 55#define GDB_FR_REG27 ((GDB_FR_REG26) + 4) /* 27 */ 56#define GDB_FR_REG28 ((GDB_FR_REG27) + 4) /* 28 */ 57#define GDB_FR_REG29 ((GDB_FR_REG28) + 4) /* 29 */ 58#define GDB_FR_REG30 ((GDB_FR_REG29) + 4) /* 30 */ 59#define GDB_FR_REG31 ((GDB_FR_REG30) + 4) /* 31 */ 60 61/* 62 * Saved special registers 63 */ 64#define GDB_FR_STATUS ((GDB_FR_REG31) + 4) /* 32 */ 65#define GDB_FR_LO ((GDB_FR_STATUS) + 4) /* 33 */ 66#define GDB_FR_HI ((GDB_FR_LO) + 4) /* 34 */ 67#define GDB_FR_BADVADDR ((GDB_FR_HI) + 4) /* 35 */ 68#define GDB_FR_CAUSE ((GDB_FR_BADVADDR) + 4) /* 36 */ 69#define GDB_FR_EPC ((GDB_FR_CAUSE) + 4) /* 37 */ 70 71/* 72 * Saved floating point registers 73 */ 74#define GDB_FR_FPR0 ((GDB_FR_EPC) + 4) /* 38 */ 75#define GDB_FR_FPR1 ((GDB_FR_FPR0) + 4) /* 39 */ 76#define GDB_FR_FPR2 ((GDB_FR_FPR1) + 4) /* 40 */ 77#define GDB_FR_FPR3 ((GDB_FR_FPR2) + 4) /* 41 */ 78#define GDB_FR_FPR4 ((GDB_FR_FPR3) + 4) /* 42 */ 79#define GDB_FR_FPR5 ((GDB_FR_FPR4) + 4) /* 43 */ 80#define GDB_FR_FPR6 ((GDB_FR_FPR5) + 4) /* 44 */ 81#define GDB_FR_FPR7 ((GDB_FR_FPR6) + 4) /* 45 */ 82#define GDB_FR_FPR8 ((GDB_FR_FPR7) + 4) /* 46 */ 83#define GDB_FR_FPR9 ((GDB_FR_FPR8) + 4) /* 47 */ 84#define GDB_FR_FPR10 ((GDB_FR_FPR9) + 4) /* 48 */ 85#define GDB_FR_FPR11 ((GDB_FR_FPR10) + 4) /* 49 */ 86#define GDB_FR_FPR12 ((GDB_FR_FPR11) + 4) /* 50 */ 87#define GDB_FR_FPR13 ((GDB_FR_FPR12) + 4) /* 51 */ 88#define GDB_FR_FPR14 ((GDB_FR_FPR13) + 4) /* 52 */ 89#define GDB_FR_FPR15 ((GDB_FR_FPR14) + 4) /* 53 */ 90#define GDB_FR_FPR16 ((GDB_FR_FPR15) + 4) /* 54 */ 91#define GDB_FR_FPR17 ((GDB_FR_FPR16) + 4) /* 55 */ 92#define GDB_FR_FPR18 ((GDB_FR_FPR17) + 4) /* 56 */ 93#define GDB_FR_FPR19 ((GDB_FR_FPR18) + 4) /* 57 */ 94#define GDB_FR_FPR20 ((GDB_FR_FPR19) + 4) /* 58 */ 95#define GDB_FR_FPR21 ((GDB_FR_FPR20) + 4) /* 59 */ 96#define GDB_FR_FPR22 ((GDB_FR_FPR21) + 4) /* 60 */ 97#define GDB_FR_FPR23 ((GDB_FR_FPR22) + 4) /* 61 */ 98#define GDB_FR_FPR24 ((GDB_FR_FPR23) + 4) /* 62 */ 99#define GDB_FR_FPR25 ((GDB_FR_FPR24) + 4) /* 63 */ 100#define GDB_FR_FPR26 ((GDB_FR_FPR25) + 4) /* 64 */ 101#define GDB_FR_FPR27 ((GDB_FR_FPR26) + 4) /* 65 */ 102#define GDB_FR_FPR28 ((GDB_FR_FPR27) + 4) /* 66 */ 103#define GDB_FR_FPR29 ((GDB_FR_FPR28) + 4) /* 67 */ 104#define GDB_FR_FPR30 ((GDB_FR_FPR29) + 4) /* 68 */ 105#define GDB_FR_FPR31 ((GDB_FR_FPR30) + 4) /* 69 */ 106 107#define GDB_FR_FSR ((GDB_FR_FPR31) + 4) /* 70 */ 108#define GDB_FR_FIR ((GDB_FR_FSR) + 4) /* 71 */ 109#define GDB_FR_FRP ((GDB_FR_FIR) + 4) /* 72 */ 110 111#define GDB_FR_DUMMY ((GDB_FR_FRP) + 4) /* 73, unused ??? */ 112 113/* 114 * Again, CP0 registers 115 */ 116#define GDB_FR_CP0_INDEX ((GDB_FR_DUMMY) + 4) /* 74 */ 117#define GDB_FR_CP0_RANDOM ((GDB_FR_CP0_INDEX) + 4) /* 75 */ 118#define GDB_FR_CP0_ENTRYLO0 ((GDB_FR_CP0_RANDOM) + 4) /* 76 */ 119#define GDB_FR_CP0_ENTRYLO1 ((GDB_FR_CP0_ENTRYLO0) + 4) /* 77 */ 120#define GDB_FR_CP0_CONTEXT ((GDB_FR_CP0_ENTRYLO1) + 4) /* 78 */ 121#define GDB_FR_CP0_PAGEMASK ((GDB_FR_CP0_CONTEXT) + 4) /* 79 */ 122#define GDB_FR_CP0_WIRED ((GDB_FR_CP0_PAGEMASK) + 4) /* 80 */ 123#define GDB_FR_CP0_REG7 ((GDB_FR_CP0_WIRED) + 4) /* 81 */ 124#define GDB_FR_CP0_REG8 ((GDB_FR_CP0_REG7) + 4) /* 82 */ 125#define GDB_FR_CP0_REG9 ((GDB_FR_CP0_REG8) + 4) /* 83 */ 126#define GDB_FR_CP0_ENTRYHI ((GDB_FR_CP0_REG9) + 4) /* 84 */ 127#define GDB_FR_CP0_REG11 ((GDB_FR_CP0_ENTRYHI) + 4) /* 85 */ 128#define GDB_FR_CP0_REG12 ((GDB_FR_CP0_REG11) + 4) /* 86 */ 129#define GDB_FR_CP0_REG13 ((GDB_FR_CP0_REG12) + 4) /* 87 */ 130#define GDB_FR_CP0_REG14 ((GDB_FR_CP0_REG13) + 4) /* 88 */ 131#define GDB_FR_CP0_PRID ((GDB_FR_CP0_REG14) + 4) /* 89 */ 132 133#define GDB_FR_SIZE ((((GDB_FR_CP0_PRID) + 4) + (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 142struct gdb_regs { 143 /* 144 * Pad bytes for argument save space on the stack 145 * 20/40 Bytes for 32/64 bit code 146 */ 147 unsigned long pad0[5]; 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 209void set_debug_traps(void); 210 211#endif /* !__ASSEMBLY__ */ 212#endif /* __ASM_MIPS_GDB_STUB_H */ 213