#ifndef _KDBPRIVATE_H #define _KDBPRIVATE_H /* * Kernel Debugger Architecture Independent Private Headers * * 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) 2000-2004 Silicon Graphics, Inc. All Rights Reserved. * Copyright (c) 2009 Wind River Systems, Inc. All Rights Reserved. */ #include <linux/kgdb.h> #include "../debug_core.h" /* Kernel Debugger Command codes. Must not overlap with error codes. */ #define KDB_CMD_GO (-1001) #define KDB_CMD_CPU (-1002) #define KDB_CMD_SS (-1003) #define KDB_CMD_KGDB (-1005) /* Internal debug flags */ #define KDB_DEBUG_FLAG_BP 0x0002 /* Breakpoint subsystem debug */ #define KDB_DEBUG_FLAG_BB_SUMM 0x0004 /* Basic block analysis, summary only */ #define KDB_DEBUG_FLAG_AR 0x0008 /* Activation record, generic */ #define KDB_DEBUG_FLAG_ARA 0x0010 /* Activation record, arch specific */ #define KDB_DEBUG_FLAG_BB 0x0020 /* All basic block analysis */ #define KDB_DEBUG_FLAG_STATE 0x0040 /* State flags */ #define KDB_DEBUG_FLAG_MASK 0xffff /* All debug flags */ #define KDB_DEBUG_FLAG_SHIFT 16 /* Shift factor for dbflags */ #define KDB_DEBUG(flag) (kdb_flags & \ (KDB_DEBUG_FLAG_##flag << KDB_DEBUG_FLAG_SHIFT)) #define KDB_DEBUG_STATE(text, value) if (KDB_DEBUG(STATE)) \ kdb_print_state(text, value) #if BITS_PER_LONG == 32 #define KDB_PLATFORM_ENV "BYTESPERWORD=4" #define kdb_machreg_fmt "0x%lx" #define kdb_machreg_fmt0 "0x%08lx" #define kdb_bfd_vma_fmt "0x%lx" #define kdb_bfd_vma_fmt0 "0x%08lx" #define kdb_elfw_addr_fmt "0x%x" #define kdb_elfw_addr_fmt0 "0x%08x" #define kdb_f_count_fmt "%d" #elif BITS_PER_LONG == 64 #define KDB_PLATFORM_ENV "BYTESPERWORD=8" #define kdb_machreg_fmt "0x%lx" #define kdb_machreg_fmt0 "0x%016lx" #define kdb_bfd_vma_fmt "0x%lx" #define kdb_bfd_vma_fmt0 "0x%016lx" #define kdb_elfw_addr_fmt "0x%x" #define kdb_elfw_addr_fmt0 "0x%016x" #define kdb_f_count_fmt "%ld" #endif /* * KDB_MAXBPT describes the total number of breakpoints * supported by this architecure. */ #define KDB_MAXBPT 16 /* Symbol table format returned by kallsyms. */ typedef struct __ksymtab { unsigned long value; /* Address of symbol */ const char *mod_name; /* Module containing symbol or * "kernel" */ unsigned long mod_start; unsigned long mod_end; const char *sec_name; /* Section containing symbol */ unsigned long sec_start; unsigned long sec_end; const char *sym_name; /* Full symbol name, including * any version */ unsigned long sym_start; unsigned long sym_end; } kdb_symtab_t; extern int kallsyms_symbol_next(char *prefix_name, int flag); extern int kallsyms_symbol_complete(char *prefix_name, int max_len); /* Exported Symbols for kernel loadable modules to use. */ extern int kdb_getarea_size(void *, unsigned long, size_t); extern int kdb_putarea_size(unsigned long, void *, size_t); /* * Like get_user and put_user, kdb_getarea and kdb_putarea take variable * names, not pointers. The underlying *_size functions take pointers. */ #define kdb_getarea(x, addr) kdb_getarea_size(&(x), addr, sizeof((x))) #define kdb_putarea(addr, x) kdb_putarea_size(addr, &(x), sizeof((x))) extern int kdb_getphysword(unsigned long *word, unsigned long addr, size_t size); extern int kdb_getword(unsigned long *, unsigned long, size_t); extern int kdb_putword(unsigned long, unsigned long, size_t); extern int kdbgetularg(const char *, unsigned long *); extern int kdbgetu64arg(const char *, u64 *); extern char *kdbgetenv(const char *); extern int kdbgetaddrarg(int, const char **, int*, unsigned long *, long *, char **); extern int kdbgetsymval(const char *, kdb_symtab_t *); extern int kdbnearsym(unsigned long, kdb_symtab_t *); extern void kdbnearsym_cleanup(void); extern char *kdb_strdup(const char *str, gfp_t type); extern void kdb_symbol_print(unsigned long, const kdb_symtab_t *, unsigned int); /* Routine for debugging the debugger state. */ extern void kdb_print_state(const char *, int); extern int kdb_state; #define KDB_STATE_KDB 0x00000001 /* Cpu is inside kdb */ #define KDB_STATE_LEAVING 0x00000002 /* Cpu is leaving kdb */ #define KDB_STATE_CMD 0x00000004 /* Running a kdb command */ #define KDB_STATE_KDB_CONTROL 0x00000008 /* This cpu is under * kdb control */ #define KDB_STATE_HOLD_CPU 0x00000010 /* Hold this cpu inside kdb */ #define KDB_STATE_DOING_SS 0x00000020 /* Doing ss command */ #define KDB_STATE_SSBPT 0x00000080 /* Install breakpoint * after one ss, independent of * DOING_SS */ #define KDB_STATE_REENTRY 0x00000100 /* Valid re-entry into kdb */ #define KDB_STATE_SUPPRESS 0x00000200 /* Suppress error messages */ #define KDB_STATE_PAGER 0x00000400 /* pager is available */ #define KDB_STATE_GO_SWITCH 0x00000800 /* go is switching * back to initial cpu */ #define KDB_STATE_PRINTF_LOCK 0x00001000 /* Holds kdb_printf lock */ #define KDB_STATE_WAIT_IPI 0x00002000 /* Waiting for kdb_ipi() NMI */ #define KDB_STATE_RECURSE 0x00004000 /* Recursive entry to kdb */ #define KDB_STATE_IP_ADJUSTED 0x00008000 /* Restart IP has been * adjusted */ #define KDB_STATE_GO1 0x00010000 /* go only releases one cpu */ #define KDB_STATE_KEYBOARD 0x00020000 /* kdb entered via * keyboard on this cpu */ #define KDB_STATE_KEXEC 0x00040000 /* kexec issued */ #define KDB_STATE_DOING_KGDB 0x00080000 /* kgdb enter now issued */ #define KDB_STATE_KGDB_TRANS 0x00200000 /* Transition to kgdb */ #define KDB_STATE_ARCH 0xff000000 /* Reserved for arch * specific use */ #define KDB_STATE(flag) (kdb_state & KDB_STATE_##flag) #define KDB_STATE_SET(flag) ((void)(kdb_state |= KDB_STATE_##flag)) #define KDB_STATE_CLEAR(flag) ((void)(kdb_state &= ~KDB_STATE_##flag)) extern int kdb_nextline; /* Current number of lines displayed */ typedef struct _kdb_bp { unsigned long bp_addr; /* Address breakpoint is present at */ unsigned int bp_free:1; /* This entry is available */ unsigned int bp_enabled:1; /* Breakpoint is active in register */ unsigned int bp_type:4; /* Uses hardware register */ unsigned int bp_installed:1; /* Breakpoint is installed */ unsigned int bp_delay:1; /* Do delayed bp handling */ unsigned int bp_delayed:1; /* Delayed breakpoint */ unsigned int bph_length; /* HW break length */ } kdb_bp_t; #ifdef CONFIG_KGDB_KDB extern kdb_bp_t kdb_breakpoints[/* KDB_MAXBPT */]; /* The KDB shell command table */ typedef struct _kdbtab { char *cmd_name; /* Command name */ kdb_func_t cmd_func; /* Function to execute command */ char *cmd_usage; /* Usage String for this command */ char *cmd_help; /* Help message for this command */ short cmd_minlen; /* Minimum legal # command * chars required */ kdb_cmdflags_t cmd_flags; /* Command behaviour flags */ } kdbtab_t; extern int kdb_bt(int, const char **); /* KDB display back trace */ /* KDB breakpoint management functions */ extern void kdb_initbptab(void); extern void kdb_bp_install(struct pt_regs *); extern void kdb_bp_remove(void); typedef enum { KDB_DB_BPT, /* Breakpoint */ KDB_DB_SS, /* Single-step trap */ KDB_DB_SSBPT, /* Single step over breakpoint */ KDB_DB_NOBPT /* Spurious breakpoint */ } kdb_dbtrap_t; extern int kdb_main_loop(kdb_reason_t, kdb_reason_t, int, kdb_dbtrap_t, struct pt_regs *); /* Miscellaneous functions and data areas */ extern int kdb_grepping_flag; #define KDB_GREPPING_FLAG_SEARCH 0x8000 extern char kdb_grep_string[]; #define KDB_GREP_STRLEN 256 extern int kdb_grep_leading; extern int kdb_grep_trailing; extern char *kdb_cmds[]; extern unsigned long kdb_task_state_string(const char *); extern char kdb_task_state_char (const struct task_struct *); extern unsigned long kdb_task_state(const struct task_struct *p, unsigned long mask); extern void kdb_ps_suppressed(void); extern void kdb_ps1(const struct task_struct *p); extern void kdb_print_nameval(const char *name, unsigned long val); extern void kdb_send_sig_info(struct task_struct *p, struct siginfo *info); extern void kdb_meminfo_proc_show(void); extern char *kdb_getstr(char *, size_t, const char *); extern void kdb_gdb_state_pass(char *buf); /* Defines for kdb_symbol_print */ #define KDB_SP_SPACEB 0x0001 /* Space before string */ #define KDB_SP_SPACEA 0x0002 /* Space after string */ #define KDB_SP_PAREN 0x0004 /* Parenthesis around string */ #define KDB_SP_VALUE 0x0008 /* Print the value of the address */ #define KDB_SP_SYMSIZE 0x0010 /* Print the size of the symbol */ #define KDB_SP_NEWLINE 0x0020 /* Newline after string */ #define KDB_SP_DEFAULT (KDB_SP_VALUE|KDB_SP_PAREN) #define KDB_TSK(cpu) kgdb_info[cpu].task #define KDB_TSKREGS(cpu) kgdb_info[cpu].debuggerinfo extern struct task_struct *kdb_curr_task(int); #define kdb_task_has_cpu(p) (task_curr(p)) /* Simplify coexistence with NPTL */ #define kdb_do_each_thread(g, p) do_each_thread(g, p) #define kdb_while_each_thread(g, p) while_each_thread(g, p) #define GFP_KDB (in_interrupt() ? GFP_ATOMIC : GFP_KERNEL) extern void *debug_kmalloc(size_t size, gfp_t flags); extern void debug_kfree(void *); extern void debug_kusage(void); extern void kdb_set_current_task(struct task_struct *); extern struct task_struct *kdb_current_task; #ifdef CONFIG_KDB_KEYBOARD extern void kdb_kbd_cleanup_state(void); #else /* ! CONFIG_KDB_KEYBOARD */ #define kdb_kbd_cleanup_state() #endif /* ! CONFIG_KDB_KEYBOARD */ #ifdef CONFIG_MODULES extern struct list_head *kdb_modules; #endif /* CONFIG_MODULES */ extern char kdb_prompt_str[]; #define KDB_WORD_SIZE ((int)sizeof(unsigned long)) #endif /* CONFIG_KGDB_KDB */ #endif /* !_KDBPRIVATE_H */