diff options
Diffstat (limited to 'ANDROID_3.4.5/include/linux/kgdb.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/kgdb.h | 313 |
1 files changed, 0 insertions, 313 deletions
diff --git a/ANDROID_3.4.5/include/linux/kgdb.h b/ANDROID_3.4.5/include/linux/kgdb.h deleted file mode 100644 index c4d2fc19..00000000 --- a/ANDROID_3.4.5/include/linux/kgdb.h +++ /dev/null @@ -1,313 +0,0 @@ -/* - * This provides the callbacks and functions that KGDB needs to share between - * the core, I/O and arch-specific portions. - * - * Author: Amit Kale <amitkale@linsyssoft.com> and - * Tom Rini <trini@kernel.crashing.org> - * - * 2001-2004 (c) Amit S. Kale and 2003-2005 (c) MontaVista Software, Inc. - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - */ -#ifndef _KGDB_H_ -#define _KGDB_H_ - -#include <linux/serial_8250.h> -#include <linux/linkage.h> -#include <linux/init.h> -#include <linux/atomic.h> -#ifdef CONFIG_HAVE_ARCH_KGDB -#include <asm/kgdb.h> -#endif - -#ifdef CONFIG_KGDB -struct pt_regs; - -/** - * kgdb_skipexception - (optional) exit kgdb_handle_exception early - * @exception: Exception vector number - * @regs: Current &struct pt_regs. - * - * On some architectures it is required to skip a breakpoint - * exception when it occurs after a breakpoint has been removed. - * This can be implemented in the architecture specific portion of kgdb. - */ -extern int kgdb_skipexception(int exception, struct pt_regs *regs); - -struct tasklet_struct; -struct task_struct; -struct uart_port; - -/** - * kgdb_breakpoint - compiled in breakpoint - * - * This will be implemented as a static inline per architecture. This - * function is called by the kgdb core to execute an architecture - * specific trap to cause kgdb to enter the exception processing. - * - */ -void kgdb_breakpoint(void); - -extern int kgdb_connected; -extern int kgdb_io_module_registered; - -extern atomic_t kgdb_setting_breakpoint; -extern atomic_t kgdb_cpu_doing_single_step; - -extern struct task_struct *kgdb_usethread; -extern struct task_struct *kgdb_contthread; - -enum kgdb_bptype { - BP_BREAKPOINT = 0, - BP_HARDWARE_BREAKPOINT, - BP_WRITE_WATCHPOINT, - BP_READ_WATCHPOINT, - BP_ACCESS_WATCHPOINT, - BP_POKE_BREAKPOINT, -}; - -enum kgdb_bpstate { - BP_UNDEFINED = 0, - BP_REMOVED, - BP_SET, - BP_ACTIVE -}; - -struct kgdb_bkpt { - unsigned long bpt_addr; - unsigned char saved_instr[BREAK_INSTR_SIZE]; - enum kgdb_bptype type; - enum kgdb_bpstate state; -}; - -struct dbg_reg_def_t { - char *name; - int size; - int offset; -}; - -#ifndef DBG_MAX_REG_NUM -#define DBG_MAX_REG_NUM 0 -#else -extern struct dbg_reg_def_t dbg_reg_def[]; -extern char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs); -extern int dbg_set_reg(int regno, void *mem, struct pt_regs *regs); -#endif -#ifndef KGDB_MAX_BREAKPOINTS -# define KGDB_MAX_BREAKPOINTS 1000 -#endif - -#define KGDB_HW_BREAKPOINT 1 - -/* - * Functions each KGDB-supporting architecture must provide: - */ - -/** - * kgdb_arch_init - Perform any architecture specific initalization. - * - * This function will handle the initalization of any architecture - * specific callbacks. - */ -extern int kgdb_arch_init(void); - -/** - * kgdb_arch_exit - Perform any architecture specific uninitalization. - * - * This function will handle the uninitalization of any architecture - * specific callbacks, for dynamic registration and unregistration. - */ -extern void kgdb_arch_exit(void); - -/** - * pt_regs_to_gdb_regs - Convert ptrace regs to GDB regs - * @gdb_regs: A pointer to hold the registers in the order GDB wants. - * @regs: The &struct pt_regs of the current process. - * - * Convert the pt_regs in @regs into the format for registers that - * GDB expects, stored in @gdb_regs. - */ -extern void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs); - -/** - * sleeping_thread_to_gdb_regs - Convert ptrace regs to GDB regs - * @gdb_regs: A pointer to hold the registers in the order GDB wants. - * @p: The &struct task_struct of the desired process. - * - * Convert the register values of the sleeping process in @p to - * the format that GDB expects. - * This function is called when kgdb does not have access to the - * &struct pt_regs and therefore it should fill the gdb registers - * @gdb_regs with what has been saved in &struct thread_struct - * thread field during switch_to. - */ -extern void -sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p); - -/** - * gdb_regs_to_pt_regs - Convert GDB regs to ptrace regs. - * @gdb_regs: A pointer to hold the registers we've received from GDB. - * @regs: A pointer to a &struct pt_regs to hold these values in. - * - * Convert the GDB regs in @gdb_regs into the pt_regs, and store them - * in @regs. - */ -extern void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs); - -/** - * kgdb_arch_handle_exception - Handle architecture specific GDB packets. - * @vector: The error vector of the exception that happened. - * @signo: The signal number of the exception that happened. - * @err_code: The error code of the exception that happened. - * @remcom_in_buffer: The buffer of the packet we have read. - * @remcom_out_buffer: The buffer of %BUFMAX bytes to write a packet into. - * @regs: The &struct pt_regs of the current process. - * - * This function MUST handle the 'c' and 's' command packets, - * as well packets to set / remove a hardware breakpoint, if used. - * If there are additional packets which the hardware needs to handle, - * they are handled here. The code should return -1 if it wants to - * process more packets, and a %0 or %1 if it wants to exit from the - * kgdb callback. - */ -extern int -kgdb_arch_handle_exception(int vector, int signo, int err_code, - char *remcom_in_buffer, - char *remcom_out_buffer, - struct pt_regs *regs); - -/** - * kgdb_roundup_cpus - Get other CPUs into a holding pattern - * @flags: Current IRQ state - * - * On SMP systems, we need to get the attention of the other CPUs - * and get them into a known state. This should do what is needed - * to get the other CPUs to call kgdb_wait(). Note that on some arches, - * the NMI approach is not used for rounding up all the CPUs. For example, - * in case of MIPS, smp_call_function() is used to roundup CPUs. In - * this case, we have to make sure that interrupts are enabled before - * calling smp_call_function(). The argument to this function is - * the flags that will be used when restoring the interrupts. There is - * local_irq_save() call before kgdb_roundup_cpus(). - * - * On non-SMP systems, this is not called. - */ -extern void kgdb_roundup_cpus(unsigned long flags); - -/** - * kgdb_arch_set_pc - Generic call back to the program counter - * @regs: Current &struct pt_regs. - * @pc: The new value for the program counter - * - * This function handles updating the program counter and requires an - * architecture specific implementation. - */ -extern void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long pc); - - -/* Optional functions. */ -extern int kgdb_validate_break_address(unsigned long addr); -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. - * - * This function will handle the late initalization of any - * architecture specific callbacks. This is an optional function for - * handling things like late initialization of hw breakpoints. The - * default implementation does nothing. - */ -extern void kgdb_arch_late(void); - - -/** - * struct kgdb_arch - Describe architecture specific values. - * @gdb_bpt_instr: The instruction to trigger a breakpoint. - * @flags: Flags for the breakpoint, currently just %KGDB_HW_BREAKPOINT. - * @set_breakpoint: Allow an architecture to specify how to set a software - * breakpoint. - * @remove_breakpoint: Allow an architecture to specify how to remove a - * software breakpoint. - * @set_hw_breakpoint: Allow an architecture to specify how to set a hardware - * breakpoint. - * @remove_hw_breakpoint: Allow an architecture to specify how to remove a - * hardware breakpoint. - * @disable_hw_break: Allow an architecture to specify how to disable - * hardware breakpoints for a single cpu. - * @remove_all_hw_break: Allow an architecture to specify how to remove all - * hardware breakpoints. - * @correct_hw_break: Allow an architecture to specify how to correct the - * hardware debug registers. - */ -struct kgdb_arch { - unsigned char gdb_bpt_instr[BREAK_INSTR_SIZE]; - unsigned long flags; - - int (*set_breakpoint)(unsigned long, char *); - int (*remove_breakpoint)(unsigned long, char *); - int (*set_hw_breakpoint)(unsigned long, int, enum kgdb_bptype); - int (*remove_hw_breakpoint)(unsigned long, int, enum kgdb_bptype); - void (*disable_hw_break)(struct pt_regs *regs); - void (*remove_all_hw_break)(void); - void (*correct_hw_break)(void); -}; - -/** - * struct kgdb_io - Describe the interface for an I/O driver to talk with KGDB. - * @name: Name of the I/O driver. - * @read_char: Pointer to a function that will return one char. - * @write_char: Pointer to a function that will write one char. - * @flush: Pointer to a function that will flush any pending writes. - * @init: Pointer to a function that will initialize the device. - * @pre_exception: Pointer to a function that will do any prep work for - * 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 - */ -struct kgdb_io { - const char *name; - int (*read_char) (void); - void (*write_char) (u8); - void (*flush) (void); - int (*init) (void); - void (*pre_exception) (void); - void (*post_exception) (void); - int is_console; -}; - -extern struct kgdb_arch arch_kgdb_ops; - -extern unsigned long __weak kgdb_arch_pc(int exception, struct pt_regs *regs); - -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; - -extern int kgdb_hex2long(char **ptr, unsigned long *long_val); -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_handle_exception(int ex_vector, int signo, int err_code, - struct pt_regs *regs); -extern int kgdb_nmicallback(int cpu, void *regs); -extern void gdbstub_exit(int status); - -extern int kgdb_single_step; -extern atomic_t kgdb_active; -#define in_dbg_master() \ - (raw_smp_processor_id() == atomic_read(&kgdb_active)) -extern bool dbg_is_early; -extern void __init dbg_late_init(void); -#else /* ! CONFIG_KGDB */ -#define in_dbg_master() (0) -#define dbg_late_init() -#endif /* ! CONFIG_KGDB */ -#endif /* _KGDB_H_ */ |