diff options
Diffstat (limited to 'sys/arch/mvmeppc/include/db_machdep.h')
| -rw-r--r-- | sys/arch/mvmeppc/include/db_machdep.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/sys/arch/mvmeppc/include/db_machdep.h b/sys/arch/mvmeppc/include/db_machdep.h new file mode 100644 index 00000000000..447ef91ece6 --- /dev/null +++ b/sys/arch/mvmeppc/include/db_machdep.h @@ -0,0 +1,103 @@ +/* $OpenBSD: db_machdep.h,v 1.1 2001/06/26 21:57:44 smurph Exp $ */ +/* $NetBSD: db_machdep.h,v 1.13 1996/04/29 20:50:08 leo Exp $ */ + +/* + * Mach Operating System + * Copyright (c) 1992 Carnegie Mellon University + * All Rights Reserved. + * + * Permission to use, copy, modify and distribute this software and its + * documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR + * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie Mellon + * the rights to redistribute these changes. + */ + +/* + * Machine-dependent defines for new kernel debugger. + */ +#ifndef _PPC_DB_MACHDEP_H_ +#define _PPC_DB_MACHDEP_H_ + +#include <vm/vm_prot.h> +#include <vm/vm_param.h> +#include <vm/vm_inherit.h> +#include <machine/trap.h> + +/* ELF symbols in ddb */ +#define DB_ELF_SYMBOLS +#define DB_ELFSIZE 32 + +typedef vm_offset_t db_addr_t; /* address - unsigned */ +typedef int db_expr_t; /* expression - signed */ +struct powerpc_saved_state { + u_int32_t r[32]; /* data registers */ + u_int32_t iar; + u_int32_t msr; +}; + + +typedef struct powerpc_saved_state db_regs_t; +db_regs_t ddb_regs; /* register state */ +#define DDB_REGS (&ddb_regs) + +#define PC_REGS(regs) ((regs)->iar) + +#define BKPT_INST 0x7C810808 /* breakpoint instruction */ + +#define BKPT_SIZE (4) /* size of breakpoint inst */ +#define BKPT_SET(inst) (BKPT_INST) + +#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->iar -= 4) + +#define SR_SINGLESTEP 0x8000 +#define db_clear_single_step(regs) ((regs)->msr &= ~SR_SINGLESTEP) +#define db_set_single_step(regs) ((regs)->msr |= SR_SINGLESTEP) + +#define T_BREAKPOINT 0xffff +#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT) + +#ifdef T_WATCHPOINT +#define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT) +#else +#define IS_WATCHPOINT_TRAP(type, code) 0 +#endif + +#define M_RTS 0xfc0007fe +#define I_RTS 0x4c000020 +#define M_BC 0xfc000000 +#define I_BC 0x40000000 +#define M_B 0xfc000000 +#define I_B 0x50000000 +#define M_RFI 0xfc0007fe +#define I_RFI 0x4c000064 + +#define inst_trap_return(ins) (((ins)&M_RFI) == I_RFI) +#define inst_return(ins) (((ins)&M_RTS) == I_RTS) +#define inst_call(ins) (((ins)&M_BC ) == I_BC || \ + ((ins)&M_B ) == I_B ) +#define inst_load(ins) 0 +#define inst_store(ins) 0 + +#ifdef _KERNEL + +void kdb_kintr __P((void *)); +int kdb_trap __P((int, void *)); + +#endif /* _KERNEL */ + +#endif /* _PPC_DB_MACHDEP_H_ */ |