| #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, int buf_size); |
| 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_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(struct task_struct *p, int sig); |
| extern void kdb_meminfo_proc_show(void); |
| extern char kdb_getchar(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)) |
| |
| #define GFP_KDB (in_dbg_master() ? 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 struct task_struct *kdb_current_task; |
| extern struct pt_regs *kdb_current_regs; |
| |
| #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 */ |