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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244/* SPDX-License-Identifier: GPL-2.0 */#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 architecture. */#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 char *kdb_strdup(const char *str, gfp_t type);extern char *kdb_strdup_dequote(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_KDBextern kdb_bp_t kdb_breakpoints[/* KDB_MAXBPT */];
extern void kdb_register_table(kdbtab_t *kp, size_t len);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 0x8000extern char kdb_grep_string[];#define KDB_GREP_STRLEN 256extern int kdb_grep_leading;extern int kdb_grep_trailing;extern char *kdb_cmds[];extern char kdb_task_state_char (const struct task_struct *);extern bool kdb_task_state(const struct task_struct *p, const char *mask);extern void kdb_ps_suppressed(void);extern void kdb_ps1(const struct task_struct *p);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
#define kdb_task_has_cpu(p) (task_curr(p))
#define GFP_KDB (in_dbg_master() ? GFP_ATOMIC : GFP_KERNEL)
extern struct task_struct *kdb_current_task;extern struct pt_regs *kdb_current_regs;
#ifdef CONFIG_KDB_KEYBOARDextern void kdb_kbd_cleanup_state(void);#else /* ! CONFIG_KDB_KEYBOARD */#define kdb_kbd_cleanup_state()#endif /* ! CONFIG_KDB_KEYBOARD */
extern char kdb_prompt_str[];
#define KDB_WORD_SIZE ((int)sizeof(unsigned long))
#endif /* CONFIG_KGDB_KDB */
#define kdb_func_printf(format, args...) \ kdb_printf("%s: " format, __func__, ## args)
#define kdb_dbg_printf(mask, format, args...) \ do { \ if (KDB_DEBUG(mask)) \ kdb_func_printf(format, ## args); \ } while (0)
#endif /* !_KDBPRIVATE_H */