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[src/nathanw_sa]: src/sys/arch/alpha/include Glue in KGDB. Needs some more w...
details: https://anonhg.NetBSD.org/src/rev/ace3e981b808
branches: nathanw_sa
changeset: 504636:ace3e981b808
user: thorpej <thorpej%NetBSD.org@localhost>
date: Thu Apr 19 17:48:48 2001 +0000
description:
Glue in KGDB. Needs some more work -- KGDB currently renders
DDB disabled, but it's a start.
diffstat:
sys/arch/alpha/include/db_machdep.h | 185 ++++++++++++++++++++++++++++++++++++
1 files changed, 185 insertions(+), 0 deletions(-)
diffs (189 lines):
diff -r 43458a58616d -r ace3e981b808 sys/arch/alpha/include/db_machdep.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/alpha/include/db_machdep.h Thu Apr 19 17:48:48 2001 +0000
@@ -0,0 +1,185 @@
+/* $NetBSD: db_machdep.h,v 1.13.4.2 2001/04/19 17:48:48 thorpej Exp $ */
+
+/*
+ * Copyright (c) 1995 Carnegie-Mellon University.
+ * All rights reserved.
+ *
+ * Author: Chris G. Demetriou
+ *
+ * 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@localhost
+ * School of Computer Science
+ * Carnegie Mellon University
+ * Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie the
+ * rights to redistribute these changes.
+ */
+
+#ifndef _ALPHA_DB_MACHDEP_H_
+#define _ALPHA_DB_MACHDEP_H_
+
+/*
+ * Machine-dependent defines for new kernel debugger.
+ */
+
+#include <sys/param.h>
+#include <uvm/uvm_extern.h>
+#include <machine/frame.h>
+
+typedef vaddr_t db_addr_t; /* address - unsigned */
+typedef long db_expr_t; /* expression - signed */
+
+typedef struct trapframe db_regs_t;
+extern db_regs_t *ddb_regp; /* pointer to current register state */
+#define DDB_REGS (ddb_regp)
+
+#define PC_REGS(regs) ((db_addr_t)(regs)->tf_regs[FRAME_PC])
+
+#define BKPT_INST 0x00000080 /* breakpoint instruction */
+#define BKPT_SIZE (4) /* size of breakpoint inst */
+#define BKPT_SET(inst) (BKPT_INST)
+
+#define FIXUP_PC_AFTER_BREAK(regs) \
+ ((regs)->tf_regs[FRAME_PC] -= BKPT_SIZE)
+
+#define SOFTWARE_SSTEP 1 /* no hardware support */
+#define IS_BREAKPOINT_TRAP(type, code) ((type) == ALPHA_KENTRY_IF && \
+ (code) == ALPHA_IF_CODE_BPT)
+#define IS_WATCHPOINT_TRAP(type, code) 0
+
+/*
+ * Functions needed for software single-stepping.
+ */
+
+boolean_t db_inst_trap_return(int inst);
+boolean_t db_inst_return(int inst);
+boolean_t db_inst_call(int inst);
+boolean_t db_inst_branch(int inst);
+boolean_t db_inst_load(int inst);
+boolean_t db_inst_store(int inst);
+boolean_t db_inst_unconditional_flow_transfer(int inst);
+db_addr_t db_branch_taken(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))
+
+/* No delay slots on Alpha. */
+#define next_instr_address(v, b) ((db_addr_t) ((b) ? (v) : ((v) + 4)))
+
+u_long db_register_value(db_regs_t *, int);
+int ddb_trap(unsigned long, unsigned long, unsigned long,
+ unsigned long, struct trapframe *);
+
+int alpha_debug(unsigned long, unsigned long, unsigned long,
+ unsigned long, struct trapframe *);
+
+struct alpha_bus_space;
+void alpha_kgdb_init(const char **, struct alpha_bus_space *);
+
+/*
+ * We define some of our own commands.
+ */
+#define DB_MACHINE_COMMANDS
+
+/*
+ * We use Elf64 symbols in DDB.
+ */
+#define DB_ELF_SYMBOLS
+#define DB_ELFSIZE 64
+
+/*
+ * Stuff for KGDB.
+ */
+typedef long kgdb_reg_t;
+#define KGDB_NUMREGS 66 /* from tm-alpha.h, NUM_REGS */
+#define KGDB_REG_V0 0
+#define KGDB_REG_T0 1
+#define KGDB_REG_T1 2
+#define KGDB_REG_T2 3
+#define KGDB_REG_T3 4
+#define KGDB_REG_T4 5
+#define KGDB_REG_T5 6
+#define KGDB_REG_T6 7
+#define KGDB_REG_T7 8
+#define KGDB_REG_S0 9
+#define KGDB_REG_S1 10
+#define KGDB_REG_S2 11
+#define KGDB_REG_S3 12
+#define KGDB_REG_S4 13
+#define KGDB_REG_S5 14
+#define KGDB_REG_S6 15 /* FP */
+#define KGDB_REG_A0 16
+#define KGDB_REG_A1 17
+#define KGDB_REG_A2 18
+#define KGDB_REG_A3 19
+#define KGDB_REG_A4 20
+#define KGDB_REG_A5 21
+#define KGDB_REG_T8 22
+#define KGDB_REG_T9 23
+#define KGDB_REG_T10 24
+#define KGDB_REG_T11 25
+#define KGDB_REG_RA 26
+#define KGDB_REG_T12 27
+#define KGDB_REG_AT 28
+#define KGDB_REG_GP 29
+#define KGDB_REG_SP 30
+#define KGDB_REG_ZERO 31
+#define KGDB_REG_F0 32
+#define KGDB_REG_F1 33
+#define KGDB_REG_F2 34
+#define KGDB_REG_F3 35
+#define KGDB_REG_F4 36
+#define KGDB_REG_F5 37
+#define KGDB_REG_F6 38
+#define KGDB_REG_F7 39
+#define KGDB_REG_F8 40
+#define KGDB_REG_F9 41
+#define KGDB_REG_F10 42
+#define KGDB_REG_F11 43
+#define KGDB_REG_F12 44
+#define KGDB_REG_F13 45
+#define KGDB_REG_F14 46
+#define KGDB_REG_F15 47
+#define KGDB_REG_F16 48
+#define KGDB_REG_F17 49
+#define KGDB_REG_F18 50
+#define KGDB_REG_F19 51
+#define KGDB_REG_F20 52
+#define KGDB_REG_F21 53
+#define KGDB_REG_F22 54
+#define KGDB_REG_F23 55
+#define KGDB_REG_F24 56
+#define KGDB_REG_F25 57
+#define KGDB_REG_F26 58
+#define KGDB_REG_F27 59
+#define KGDB_REG_F28 60
+#define KGDB_REG_F29 61
+#define KGDB_REG_F30 62
+#define KGDB_REG_F31 63
+#define KGDB_REG_PC 64
+#define KGDB_REG_VFP 65
+
+/* Too much? Must be large enough for register transfer. */
+#define KGDB_BUFLEN 1024
+
+#endif /* _ALPHA_DB_MACHDEP_H_ */
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