db_machdep from NetBSD.

1 files changed, 163 insertions, 0 deletions

diff --git a/sys/arch/sparc64/include/db_machdep.h b/sys/arch/sparc64/include/db_machdep.h
new file mode 100644
index 00000000000..c693ff80de5
--- /dev/null
+++ b/sys/arch/sparc64/include/db_machdep.h
@@ -0,0 +1,163 @@
+/*	$NetBSD: db_machdep.h,v 1.12 2001/07/07 15:16:13 eeh Exp $ */
+
+/*
+ * Mach Operating System
+ * Copyright (c) 1991,1990 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.
+ */
+
+#ifndef	_SPARC_DB_MACHDEP_H_
+#define	_SPARC_DB_MACHDEP_H_
+
+/*
+ * Machine-dependent defines for new kernel debugger.
+ */
+
+#include <vm/vm.h>
+#include <uvm/uvm_extern.h>
+
+#include <machine/frame.h>
+#include <machine/psl.h>
+#include <machine/trap.h>
+#include <machine/reg.h>
+
+/* end of mangling */
+
+typedef	vaddr_t		db_addr_t;	/* address - unsigned */
+typedef	long		db_expr_t;	/* expression - signed */
+
+struct trapstate {
+	int64_t tstate;
+	int64_t tpc;
+	int64_t	tnpc;
+	int64_t	tt;
+};
+#if 1
+typedef struct {
+	struct trapframe64	ddb_tf;
+	struct frame64		ddb_fr;
+	struct trapstate	ddb_ts[5];
+	int			ddb_tl;
+	struct fpstate64	ddb_fpstate;
+} db_regs_t;
+#else
+typedef struct db_regs {
+	struct trapregs dbr_traps[4];
+	int		dbr_y;
+	char		dbr_tl;
+	char		dbr_canrestore;
+	char		dbr_cansave;
+	char		dbr_cleanwin;
+	char		dbr_cwp;
+	char		dbr_wstate;
+	int64_t		dbr_g[8];
+	int64_t		dbr_ag[8];
+	int64_t		dbr_ig[8];
+	int64_t		dbr_mg[8];
+	int64_t		dbr_out[8];
+	int64_t		dbr_local[8];
+	int64_t		dbr_in[8];
+} db_regs_t;
+#endif
+
+db_regs_t		ddb_regs;	/* register state */
+#define	DDB_REGS	(&ddb_regs)
+#define	DDB_TF		(&ddb_regs.ddb_tf)
+#define	DDB_FR		(&ddb_regs.ddb_fr)
+#define	DDB_FP		(&ddb_regs.ddb_fpstate)
+
+#if defined(lint)
+#define	PC_REGS(regs)	((regs)->ddb_tf.tf_pc)
+#else
+#define	PC_REGS(regs)	((db_addr_t)(regs)->ddb_tf.tf_pc)
+#endif
+#define	PC_ADVANCE(regs) do {				\
+	vaddr_t n = (regs)->ddb_tf.tf_npc;		\
+	(regs)->ddb_tf.tf_pc = n;			\
+	(regs)->ddb_tf.tf_npc = n + 4;			\
+} while(0)
+
+#define	BKPT_INST	0x91d02001	/* breakpoint instruction */
+#define	BKPT_SIZE	(4)		/* size of breakpoint inst */
+#define	BKPT_SET(inst)	(BKPT_INST)
+
+#define	IS_BREAKPOINT_TRAP(type, code)	\
+	((type) == T_BREAKPOINT || (type) == T_KGDB_EXEC)
+#define IS_WATCHPOINT_TRAP(type, code)	\
+	((type) ==T_PA_WATCHPT || (type) == T_VA_WATCHPT)
+
+/*
+ * Sparc cpus have no hardware single-step.
+ */
+#define SOFTWARE_SSTEP
+
+boolean_t	db_inst_trap_return __P((int inst));
+boolean_t	db_inst_return __P((int inst));
+boolean_t	db_inst_call __P((int inst));
+boolean_t	db_inst_branch __P((int inst));
+int		db_inst_load __P((int inst));
+int		db_inst_store __P((int inst));
+boolean_t	db_inst_unconditional_flow_transfer __P((int inst));
+db_addr_t	db_branch_taken __P((int inst, db_addr_t pc, db_regs_t *regs));
+
+#define inst_trap_return(ins)	db_inst_trap_return(ins)
+#define inst_return(ins)	db_inst_return(ins)
+#define inst_call(ins)		db_inst_call(ins)
+#define inst_branch(ins)	db_inst_branch(ins)
+#define inst_load(ins)		db_inst_load(ins)
+#define inst_store(ins)		db_inst_store(ins)
+#define	inst_unconditional_flow_transfer(ins) \
+				db_inst_unconditional_flow_transfer(ins)
+#define branch_taken(ins, pc, regs) \
+				db_branch_taken((ins), (pc), (regs))
+
+/* see note in db_interface.c about reversed breakpoint addrs */
+#define next_instr_address(pc, bd) \
+	((bd) ? (pc) : ddb_regs.ddb_tf.tf_npc)
+
+#define DB_MACHINE_COMMANDS
+
+void db_machine_init __P((void));
+int kdb_trap __P((int, struct trapframe64 *));
+
+/*
+ * We will use elf symbols in DDB when they work.
+ */
+#if 1
+#define	DB_ELF_SYMBOLS
+#ifdef __arch64__
+#define DB_ELFSIZE	64
+#else
+#define DB_ELFSIZE	32
+#endif
+#else
+#define DB_AOUT_SYMBOLS
+#endif
+/*
+ * KGDB definitions
+ */
+typedef u_long		kgdb_reg_t;
+#define KGDB_NUMREGS	72
+#define KGDB_BUFLEN	1024
+
+#endif	/* _SPARC_DB_MACHDEP_H_ */