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26 * Mach Operating System
27 * Copyright (c) 1991,1990 Carnegie Mellon University
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53 #ifndef _PPC_DB_MACHDEP_H_
54 #define _PPC_DB_MACHDEP_H_
57 * Machine-dependent defines for new kernel debugger.
60 #include <kern/kern_types.h>
61 #include <mach/ppc/vm_types.h>
62 #include <mach/ppc/vm_param.h>
63 #include <ppc/thread.h> /* for thread_status */
65 #include <ppc/proc_reg.h>
67 typedef vm_offset_t db_addr_t
; /* address - unsigned */
68 typedef int db_expr_t
; /* expression - signed */
70 typedef struct ppc_saved_state db_regs_t
;
71 db_regs_t ddb_regs
; /* register state */
72 #define DDB_REGS (&ddb_regs)
73 extern int db_active
; /* ddb is active */
75 #define PC_REGS(regs) ((db_addr_t)(regs)->srr0)
77 #define BKPT_INST 0x7c810808 /* breakpoint instruction */
78 #define BKPT_SIZE (4) /* size of breakpoint inst */
79 #define BKPT_SET(inst) (BKPT_INST)
81 #define db_clear_single_step(regs) ((regs)->srr1 &= ~MASK(MSR_SE))
82 #define db_set_single_step(regs) ((regs)->srr1 |= MASK(MSR_SE))
84 #define IS_BREAKPOINT_TRAP(type, code) (FALSE)
85 #define IS_WATCHPOINT_TRAP(type, code) (FALSE)
87 #define inst_trap_return(ins) (FALSE)
88 #define inst_return(ins) (FALSE)
89 #define inst_call(ins) (FALSE)
91 int db_inst_load(unsigned long);
92 int db_inst_store(unsigned long);
94 /* access capability and access macros */
96 #define DB_ACCESS_LEVEL DB_ACCESS_ANY /* any space */
97 #define DB_CHECK_ACCESS(addr,size,task) \
98 db_check_access(addr,size,task)
99 #define DB_PHYS_EQ(task1,addr1,task2,addr2) \
100 db_phys_eq(task1,addr1,task2,addr2)
101 #define DB_VALID_KERN_ADDR(addr) \
102 ((addr) >= VM_MIN_KERNEL_ADDRESS && \
103 (addr) < VM_MAX_KERNEL_ADDRESS)
104 #define DB_VALID_ADDRESS(addr,user) \
105 ((!(user) && DB_VALID_KERN_ADDR(addr)) || \
106 ((user) && (addr) < VM_MAX_ADDRESS))
109 * Given pointer to ppc_saved_state, determine if it represents
110 * a thread executing a) in user space, b) in the kernel, or c)
111 * in a kernel-loaded task. Return true for cases a) and c).
113 #define IS_USER_TRAP(regs) \
114 (USER_MODE(regs->srr1))
116 extern boolean_t
db_check_access(
120 extern boolean_t
db_phys_eq(
125 extern db_addr_t
db_disasm(
129 extern vm_offset_t
db_kvtophys(
133 extern void db_read_bytes(
138 extern void db_write_bytes(
143 extern void db_stack_trace_cmd(
148 extern void db_reboot(
153 extern void db_low_trace(
158 extern void db_to_gdb(
162 /* macros for printing OS server dependent task name */
164 #define DB_TASK_NAME(task) db_task_name(task)
165 #define DB_TASK_NAME_TITLE "COMMAND "
166 #define DB_TASK_NAME_LEN 39
167 #define DB_NULL_TASK_NAME "? "
169 extern void db_task_name(
172 /* macro for checking if a thread has used floating-point */
174 #define db_act_fp_used(act) (FALSE)
176 extern void kdb_trap(
178 struct ppc_saved_state
*regs
);
179 extern boolean_t
db_trap_from_asm(
180 struct ppc_saved_state
*regs
);
186 extern void kdb_kintr(void);
188 extern void db_phys_copy(
193 extern boolean_t
db_phys_cmp(
198 #endif /* _PPC_DB_MACHDEP_H_ */