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Diffstat (limited to 'include/asm-mips/gdb-stub.h')
| -rw-r--r-- | include/asm-mips/gdb-stub.h | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/include/asm-mips/gdb-stub.h b/include/asm-mips/gdb-stub.h new file mode 100644 index 000000000000..22f67d4a71ab --- /dev/null +++ b/include/asm-mips/gdb-stub.h @@ -0,0 +1,215 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1995 Andreas Busse + * Copyright (C) 2003 Ralf Baechle + */ +#ifndef _ASM_GDB_STUB_H +#define _ASM_GDB_STUB_H + + +/* + * important register numbers + */ + +#define REG_EPC 37 +#define REG_FP 72 +#define REG_SP 29 + +/* + * Stack layout for the GDB exception handler + * Derived from the stack layout described in asm-mips/stackframe.h + * + * The first PTRSIZE*6 bytes are argument save space for C subroutines. + */ +#define NUMREGS 90 + +#define GDB_FR_REG0 (PTRSIZE*6) /* 0 */ +#define GDB_FR_REG1 ((GDB_FR_REG0) + LONGSIZE) /* 1 */ +#define GDB_FR_REG2 ((GDB_FR_REG1) + LONGSIZE) /* 2 */ +#define GDB_FR_REG3 ((GDB_FR_REG2) + LONGSIZE) /* 3 */ +#define GDB_FR_REG4 ((GDB_FR_REG3) + LONGSIZE) /* 4 */ +#define GDB_FR_REG5 ((GDB_FR_REG4) + LONGSIZE) /* 5 */ +#define GDB_FR_REG6 ((GDB_FR_REG5) + LONGSIZE) /* 6 */ +#define GDB_FR_REG7 ((GDB_FR_REG6) + LONGSIZE) /* 7 */ +#define GDB_FR_REG8 ((GDB_FR_REG7) + LONGSIZE) /* 8 */ +#define GDB_FR_REG9 ((GDB_FR_REG8) + LONGSIZE) /* 9 */ +#define GDB_FR_REG10 ((GDB_FR_REG9) + LONGSIZE) /* 10 */ +#define GDB_FR_REG11 ((GDB_FR_REG10) + LONGSIZE) /* 11 */ +#define GDB_FR_REG12 ((GDB_FR_REG11) + LONGSIZE) /* 12 */ +#define GDB_FR_REG13 ((GDB_FR_REG12) + LONGSIZE) /* 13 */ +#define GDB_FR_REG14 ((GDB_FR_REG13) + LONGSIZE) /* 14 */ +#define GDB_FR_REG15 ((GDB_FR_REG14) + LONGSIZE) /* 15 */ +#define GDB_FR_REG16 ((GDB_FR_REG15) + LONGSIZE) /* 16 */ +#define GDB_FR_REG17 ((GDB_FR_REG16) + LONGSIZE) /* 17 */ +#define GDB_FR_REG18 ((GDB_FR_REG17) + LONGSIZE) /* 18 */ +#define GDB_FR_REG19 ((GDB_FR_REG18) + LONGSIZE) /* 19 */ +#define GDB_FR_REG20 ((GDB_FR_REG19) + LONGSIZE) /* 20 */ +#define GDB_FR_REG21 ((GDB_FR_REG20) + LONGSIZE) /* 21 */ +#define GDB_FR_REG22 ((GDB_FR_REG21) + LONGSIZE) /* 22 */ +#define GDB_FR_REG23 ((GDB_FR_REG22) + LONGSIZE) /* 23 */ +#define GDB_FR_REG24 ((GDB_FR_REG23) + LONGSIZE) /* 24 */ +#define GDB_FR_REG25 ((GDB_FR_REG24) + LONGSIZE) /* 25 */ +#define GDB_FR_REG26 ((GDB_FR_REG25) + LONGSIZE) /* 26 */ +#define GDB_FR_REG27 ((GDB_FR_REG26) + LONGSIZE) /* 27 */ +#define GDB_FR_REG28 ((GDB_FR_REG27) + LONGSIZE) /* 28 */ +#define GDB_FR_REG29 ((GDB_FR_REG28) + LONGSIZE) /* 29 */ +#define GDB_FR_REG30 ((GDB_FR_REG29) + LONGSIZE) /* 30 */ +#define GDB_FR_REG31 ((GDB_FR_REG30) + LONGSIZE) /* 31 */ + +/* + * Saved special registers + */ +#define GDB_FR_STATUS ((GDB_FR_REG31) + LONGSIZE) /* 32 */ +#define GDB_FR_LO ((GDB_FR_STATUS) + LONGSIZE) /* 33 */ +#define GDB_FR_HI ((GDB_FR_LO) + LONGSIZE) /* 34 */ +#define GDB_FR_BADVADDR ((GDB_FR_HI) + LONGSIZE) /* 35 */ +#define GDB_FR_CAUSE ((GDB_FR_BADVADDR) + LONGSIZE) /* 36 */ +#define GDB_FR_EPC ((GDB_FR_CAUSE) + LONGSIZE) /* 37 */ + +/* + * Saved floating point registers + */ +#define GDB_FR_FPR0 ((GDB_FR_EPC) + LONGSIZE) /* 38 */ +#define GDB_FR_FPR1 ((GDB_FR_FPR0) + LONGSIZE) /* 39 */ +#define GDB_FR_FPR2 ((GDB_FR_FPR1) + LONGSIZE) /* 40 */ +#define GDB_FR_FPR3 ((GDB_FR_FPR2) + LONGSIZE) /* 41 */ +#define GDB_FR_FPR4 ((GDB_FR_FPR3) + LONGSIZE) /* 42 */ +#define GDB_FR_FPR5 ((GDB_FR_FPR4) + LONGSIZE) /* 43 */ +#define GDB_FR_FPR6 ((GDB_FR_FPR5) + LONGSIZE) /* 44 */ +#define GDB_FR_FPR7 ((GDB_FR_FPR6) + LONGSIZE) /* 45 */ +#define GDB_FR_FPR8 ((GDB_FR_FPR7) + LONGSIZE) /* 46 */ +#define GDB_FR_FPR9 ((GDB_FR_FPR8) + LONGSIZE) /* 47 */ +#define GDB_FR_FPR10 ((GDB_FR_FPR9) + LONGSIZE) /* 48 */ +#define GDB_FR_FPR11 ((GDB_FR_FPR10) + LONGSIZE) /* 49 */ +#define GDB_FR_FPR12 ((GDB_FR_FPR11) + LONGSIZE) /* 50 */ +#define GDB_FR_FPR13 ((GDB_FR_FPR12) + LONGSIZE) /* 51 */ +#define GDB_FR_FPR14 ((GDB_FR_FPR13) + LONGSIZE) /* 52 */ +#define GDB_FR_FPR15 ((GDB_FR_FPR14) + LONGSIZE) /* 53 */ +#define GDB_FR_FPR16 ((GDB_FR_FPR15) + LONGSIZE) /* 54 */ +#define GDB_FR_FPR17 ((GDB_FR_FPR16) + LONGSIZE) /* 55 */ +#define GDB_FR_FPR18 ((GDB_FR_FPR17) + LONGSIZE) /* 56 */ +#define GDB_FR_FPR19 ((GDB_FR_FPR18) + LONGSIZE) /* 57 */ +#define GDB_FR_FPR20 ((GDB_FR_FPR19) + LONGSIZE) /* 58 */ +#define GDB_FR_FPR21 ((GDB_FR_FPR20) + LONGSIZE) /* 59 */ +#define GDB_FR_FPR22 ((GDB_FR_FPR21) + LONGSIZE) /* 60 */ +#define GDB_FR_FPR23 ((GDB_FR_FPR22) + LONGSIZE) /* 61 */ +#define GDB_FR_FPR24 ((GDB_FR_FPR23) + LONGSIZE) /* 62 */ +#define GDB_FR_FPR25 ((GDB_FR_FPR24) + LONGSIZE) /* 63 */ +#define GDB_FR_FPR26 ((GDB_FR_FPR25) + LONGSIZE) /* 64 */ +#define GDB_FR_FPR27 ((GDB_FR_FPR26) + LONGSIZE) /* 65 */ +#define GDB_FR_FPR28 ((GDB_FR_FPR27) + LONGSIZE) /* 66 */ +#define GDB_FR_FPR29 ((GDB_FR_FPR28) + LONGSIZE) /* 67 */ +#define GDB_FR_FPR30 ((GDB_FR_FPR29) + LONGSIZE) /* 68 */ +#define GDB_FR_FPR31 ((GDB_FR_FPR30) + LONGSIZE) /* 69 */ + +#define GDB_FR_FSR ((GDB_FR_FPR31) + LONGSIZE) /* 70 */ +#define GDB_FR_FIR ((GDB_FR_FSR) + LONGSIZE) /* 71 */ +#define GDB_FR_FRP ((GDB_FR_FIR) + LONGSIZE) /* 72 */ + +#define GDB_FR_DUMMY ((GDB_FR_FRP) + LONGSIZE) /* 73, unused ??? */ + +/* + * Again, CP0 registers + */ +#define GDB_FR_CP0_INDEX ((GDB_FR_DUMMY) + LONGSIZE) /* 74 */ +#define GDB_FR_CP0_RANDOM ((GDB_FR_CP0_INDEX) + LONGSIZE) /* 75 */ +#define GDB_FR_CP0_ENTRYLO0 ((GDB_FR_CP0_RANDOM) + LONGSIZE)/* 76 */ +#define GDB_FR_CP0_ENTRYLO1 ((GDB_FR_CP0_ENTRYLO0) + LONGSIZE)/* 77 */ +#define GDB_FR_CP0_CONTEXT ((GDB_FR_CP0_ENTRYLO1) + LONGSIZE)/* 78 */ +#define GDB_FR_CP0_PAGEMASK ((GDB_FR_CP0_CONTEXT) + LONGSIZE)/* 79 */ +#define GDB_FR_CP0_WIRED ((GDB_FR_CP0_PAGEMASK) + LONGSIZE)/* 80 */ +#define GDB_FR_CP0_REG7 ((GDB_FR_CP0_WIRED) + LONGSIZE) /* 81 */ +#define GDB_FR_CP0_REG8 ((GDB_FR_CP0_REG7) + LONGSIZE) /* 82 */ +#define GDB_FR_CP0_REG9 ((GDB_FR_CP0_REG8) + LONGSIZE) /* 83 */ +#define GDB_FR_CP0_ENTRYHI ((GDB_FR_CP0_REG9) + LONGSIZE) /* 84 */ +#define GDB_FR_CP0_REG11 ((GDB_FR_CP0_ENTRYHI) + LONGSIZE)/* 85 */ +#define GDB_FR_CP0_REG12 ((GDB_FR_CP0_REG11) + LONGSIZE) /* 86 */ +#define GDB_FR_CP0_REG13 ((GDB_FR_CP0_REG12) + LONGSIZE) /* 87 */ +#define GDB_FR_CP0_REG14 ((GDB_FR_CP0_REG13) + LONGSIZE) /* 88 */ +#define GDB_FR_CP0_PRID ((GDB_FR_CP0_REG14) + LONGSIZE) /* 89 */ + +#define GDB_FR_SIZE ((((GDB_FR_CP0_PRID) + LONGSIZE) + (PTRSIZE-1)) & ~(PTRSIZE-1)) + +#ifndef __ASSEMBLY__ + +/* + * This is the same as above, but for the high-level + * part of the GDB stub. + */ + +struct gdb_regs { + /* + * Pad bytes for argument save space on the stack + * 24/48 Bytes for 32/64 bit code + */ + unsigned long pad0[6]; + + /* + * saved main processor registers + */ + long reg0, reg1, reg2, reg3, reg4, reg5, reg6, reg7; + long reg8, reg9, reg10, reg11, reg12, reg13, reg14, reg15; + long reg16, reg17, reg18, reg19, reg20, reg21, reg22, reg23; + long reg24, reg25, reg26, reg27, reg28, reg29, reg30, reg31; + + /* + * Saved special registers + */ + long cp0_status; + long lo; + long hi; + long cp0_badvaddr; + long cp0_cause; + long cp0_epc; + + /* + * Saved floating point registers + */ + long fpr0, fpr1, fpr2, fpr3, fpr4, fpr5, fpr6, fpr7; + long fpr8, fpr9, fpr10, fpr11, fpr12, fpr13, fpr14, fpr15; + long fpr16, fpr17, fpr18, fpr19, fpr20, fpr21, fpr22, fpr23; + long fpr24, fpr25, fpr26, fpr27, fpr28, fpr29, fpr30, fpr31; + + long cp1_fsr; + long cp1_fir; + + /* + * Frame pointer + */ + long frame_ptr; + long dummy; /* unused */ + + /* + * saved cp0 registers + */ + long cp0_index; + long cp0_random; + long cp0_entrylo0; + long cp0_entrylo1; + long cp0_context; + long cp0_pagemask; + long cp0_wired; + long cp0_reg7; + long cp0_reg8; + long cp0_reg9; + long cp0_entryhi; + long cp0_reg11; + long cp0_reg12; + long cp0_reg13; + long cp0_reg14; + long cp0_prid; +}; + +/* + * Prototypes + */ + +extern int kgdb_enabled; +void set_debug_traps(void); +void set_async_breakpoint(unsigned long *epc); + +#endif /* !__ASSEMBLY__ */ +#endif /* _ASM_GDB_STUB_H */ |