diff options
Diffstat (limited to 'include/linux/kgdb.h')
| -rw-r--r-- | include/linux/kgdb.h | 60 |
1 files changed, 39 insertions, 21 deletions
diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h index c62d76478adc..5eebbe7a3545 100644 --- a/include/linux/kgdb.h +++ b/include/linux/kgdb.h @@ -16,6 +16,7 @@ #include <linux/linkage.h> #include <linux/init.h> #include <linux/atomic.h> +#include <linux/kprobes.h> #ifdef CONFIG_HAVE_ARCH_KGDB #include <asm/kgdb.h> #endif @@ -104,9 +105,9 @@ extern int dbg_set_reg(int regno, void *mem, struct pt_regs *regs); */ /** - * kgdb_arch_init - Perform any architecture specific initalization. + * kgdb_arch_init - Perform any architecture specific initialization. * - * This function will handle the initalization of any architecture + * This function will handle the initialization of any architecture * specific callbacks. */ extern int kgdb_arch_init(void); @@ -177,6 +178,17 @@ kgdb_arch_handle_exception(int vector, int signo, int err_code, struct pt_regs *regs); /** + * kgdb_arch_handle_qxfer_pkt - Handle architecture specific GDB XML + * packets. + * @remcom_in_buffer: The buffer of the packet we have read. + * @remcom_out_buffer: The buffer of %BUFMAX bytes to write a packet into. + */ + +extern void +kgdb_arch_handle_qxfer_pkt(char *remcom_in_buffer, + char *remcom_out_buffer); + +/** * kgdb_call_nmi_hook - Call kgdb_nmicallback() on the current CPU * @ignored: This parameter is only here to match the prototype. * @@ -217,9 +229,9 @@ extern int kgdb_arch_set_breakpoint(struct kgdb_bkpt *bpt); extern int kgdb_arch_remove_breakpoint(struct kgdb_bkpt *bpt); /** - * kgdb_arch_late - Perform any architecture specific initalization. + * kgdb_arch_late - Perform any architecture specific initialization. * - * This function will handle the late initalization of any + * This function will handle the late initialization of any * architecture specific callbacks. This is an optional function for * handling things like late initialization of hw breakpoints. The * default implementation does nothing. @@ -245,7 +257,6 @@ extern void kgdb_arch_late(void); * hardware breakpoints. * @correct_hw_break: Allow an architecture to specify how to correct the * hardware debug registers. - * @enable_nmi: Manage NMI-triggered entry to KGDB */ struct kgdb_arch { unsigned char gdb_bpt_instr[BREAK_INSTR_SIZE]; @@ -258,8 +269,6 @@ struct kgdb_arch { void (*disable_hw_break)(struct pt_regs *regs); void (*remove_all_hw_break)(void); void (*correct_hw_break)(void); - - void (*enable_nmi)(bool on); }; /** @@ -276,8 +285,7 @@ struct kgdb_arch { * the I/O driver. * @post_exception: Pointer to a function that will do any cleanup work * for the I/O driver. - * @is_console: 1 if the end device is a console 0 if the I/O device is - * not a console + * @cons: valid if the I/O device is a console; else NULL. */ struct kgdb_io { const char *name; @@ -288,23 +296,13 @@ struct kgdb_io { void (*deinit) (void); void (*pre_exception) (void); void (*post_exception) (void); - int is_console; + struct console *cons; }; extern const struct kgdb_arch arch_kgdb_ops; extern unsigned long kgdb_arch_pc(int exception, struct pt_regs *regs); -#ifdef CONFIG_SERIAL_KGDB_NMI -extern int kgdb_register_nmi_console(void); -extern int kgdb_unregister_nmi_console(void); -extern bool kgdb_nmi_poll_knock(void); -#else -static inline int kgdb_register_nmi_console(void) { return 0; } -static inline int kgdb_unregister_nmi_console(void) { return 0; } -static inline bool kgdb_nmi_poll_knock(void) { return true; } -#endif - extern int kgdb_register_io_module(struct kgdb_io *local_kgdb_io_ops); extern void kgdb_unregister_io_module(struct kgdb_io *local_kgdb_io_ops); extern struct kgdb_io *dbg_io_ops; @@ -314,7 +312,7 @@ extern char *kgdb_mem2hex(char *mem, char *buf, int count); extern int kgdb_hex2mem(char *buf, char *mem, int count); extern int kgdb_isremovedbreak(unsigned long addr); -extern void kgdb_schedule_breakpoint(void); +extern int kgdb_has_hit_break(unsigned long addr); extern int kgdb_handle_exception(int ex_vector, int signo, int err_code, @@ -324,6 +322,23 @@ extern int kgdb_nmicallin(int cpu, int trapnr, void *regs, int err_code, atomic_t *snd_rdy); extern void gdbstub_exit(int status); +/* + * kgdb and kprobes both use the same (kprobe) blocklist (which makes sense + * given they are both typically hooked up to the same trap meaning on most + * architectures one cannot be used to debug the other) + * + * However on architectures where kprobes is not (yet) implemented we permit + * breakpoints everywhere rather than blocking everything by default. + */ +static inline bool kgdb_within_blocklist(unsigned long addr) +{ +#ifdef CONFIG_KGDB_HONOUR_BLOCKLIST + return within_kprobe_blacklist(addr); +#else + return false; +#endif +} + extern int kgdb_single_step; extern atomic_t kgdb_active; #define in_dbg_master() \ @@ -331,9 +346,12 @@ extern atomic_t kgdb_active; extern bool dbg_is_early; extern void __init dbg_late_init(void); extern void kgdb_panic(const char *msg); +extern void kgdb_free_init_mem(void); #else /* ! CONFIG_KGDB */ #define in_dbg_master() (0) #define dbg_late_init() static inline void kgdb_panic(const char *msg) {} +static inline void kgdb_free_init_mem(void) { } +static inline int kgdb_nmicallback(int cpu, void *regs) { return 1; } #endif /* ! CONFIG_KGDB */ #endif /* _KGDB_H_ */ |