mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 12:14:01 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
132 lines
4.0 KiB
C
132 lines
4.0 KiB
C
/*
|
|
* May be copied or modified under the terms of the GNU General Public
|
|
* License. See linux/COPYING for more information.
|
|
*
|
|
* Based on original code by Glenn Engel, Jim Kingdon,
|
|
* David Grothe <dave@gcom.com>, Tigran Aivazian, <tigran@sco.com> and
|
|
* Amit S. Kale <akale@veritas.com>
|
|
*
|
|
* Super-H port based on sh-stub.c (Ben Lee and Steve Chamberlain) by
|
|
* Henry Bell <henry.bell@st.com>
|
|
*
|
|
* Header file for low-level support for remote debug using GDB.
|
|
*
|
|
*/
|
|
|
|
#ifndef __KGDB_H
|
|
#define __KGDB_H
|
|
|
|
#include <asm/ptrace.h>
|
|
|
|
struct console;
|
|
|
|
/* Same as pt_regs but has vbr in place of syscall_nr */
|
|
struct kgdb_regs {
|
|
unsigned long regs[16];
|
|
unsigned long pc;
|
|
unsigned long pr;
|
|
unsigned long sr;
|
|
unsigned long gbr;
|
|
unsigned long mach;
|
|
unsigned long macl;
|
|
unsigned long vbr;
|
|
};
|
|
|
|
/* State info */
|
|
extern char kgdb_in_gdb_mode;
|
|
extern int kgdb_done_init;
|
|
extern int kgdb_enabled;
|
|
extern int kgdb_nofault; /* Ignore bus errors (in gdb mem access) */
|
|
extern int kgdb_halt; /* Execute initial breakpoint at startup */
|
|
extern char in_nmi; /* Debounce flag to prevent NMI reentry*/
|
|
|
|
/* SCI */
|
|
extern int kgdb_portnum;
|
|
extern int kgdb_baud;
|
|
extern char kgdb_parity;
|
|
extern char kgdb_bits;
|
|
extern int kgdb_console_setup(struct console *, char *);
|
|
|
|
/* Init and interface stuff */
|
|
extern int kgdb_init(void);
|
|
extern int (*kgdb_serial_setup)(void);
|
|
extern int (*kgdb_getchar)(void);
|
|
extern void (*kgdb_putchar)(int);
|
|
|
|
struct kgdb_sermap {
|
|
char *name;
|
|
int namelen;
|
|
int (*setup_fn)(struct console *, char *);
|
|
struct kgdb_sermap *next;
|
|
};
|
|
extern void kgdb_register_sermap(struct kgdb_sermap *map);
|
|
extern struct kgdb_sermap *kgdb_porttype;
|
|
|
|
/* Trap functions */
|
|
typedef void (kgdb_debug_hook_t)(struct pt_regs *regs);
|
|
typedef void (kgdb_bus_error_hook_t)(void);
|
|
extern kgdb_debug_hook_t *kgdb_debug_hook;
|
|
extern kgdb_bus_error_hook_t *kgdb_bus_err_hook;
|
|
|
|
extern void breakpoint(void);
|
|
|
|
/* Console */
|
|
struct console;
|
|
void kgdb_console_write(struct console *co, const char *s, unsigned count);
|
|
void kgdb_console_init(void);
|
|
|
|
/* Prototypes for jmp fns */
|
|
#define _JBLEN 9
|
|
typedef int jmp_buf[_JBLEN];
|
|
extern void longjmp(jmp_buf __jmpb, int __retval);
|
|
extern int setjmp(jmp_buf __jmpb);
|
|
|
|
/* Variadic macro to print our own message to the console */
|
|
#define KGDB_PRINTK(...) printk("KGDB: " __VA_ARGS__)
|
|
|
|
/* Forced breakpoint */
|
|
#define BREAKPOINT() do { \
|
|
if (kgdb_enabled) { \
|
|
asm volatile("trapa #0xff"); \
|
|
} \
|
|
} while (0)
|
|
|
|
/* KGDB should be able to flush all kernel text space */
|
|
#if defined(CONFIG_CPU_SH4)
|
|
#define kgdb_flush_icache_range(start, end) \
|
|
{ \
|
|
extern void __flush_purge_region(void *, int); \
|
|
__flush_purge_region((void*)(start), (int)(end) - (int)(start));\
|
|
flush_icache_range((start), (end)); \
|
|
}
|
|
#else
|
|
#define kgdb_flush_icache_range(start, end) do { } while (0)
|
|
#endif
|
|
|
|
/* Kernel assert macros */
|
|
#ifdef CONFIG_KGDB_KERNEL_ASSERTS
|
|
|
|
/* Predefined conditions */
|
|
#define KA_VALID_ERRNO(errno) ((errno) > 0 && (errno) <= EMEDIUMTYPE)
|
|
#define KA_VALID_PTR_ERR(ptr) KA_VALID_ERRNO(-PTR_ERR(ptr))
|
|
#define KA_VALID_KPTR(ptr) (!(ptr) || \
|
|
((void *)(ptr) >= (void *)PAGE_OFFSET && \
|
|
(void *)(ptr) < ERR_PTR(-EMEDIUMTYPE)))
|
|
#define KA_VALID_PTRORERR(errptr) \
|
|
(KA_VALID_KPTR(errptr) || KA_VALID_PTR_ERR(errptr))
|
|
#define KA_HELD_GKL() (current->lock_depth >= 0)
|
|
|
|
/* The actual assert */
|
|
#define KGDB_ASSERT(condition, message) do { \
|
|
if (!(condition) && (kgdb_enabled)) { \
|
|
KGDB_PRINTK("Assertion failed at %s:%d: %s\n", \
|
|
__FILE__, __LINE__, message);\
|
|
BREAKPOINT(); \
|
|
} \
|
|
} while (0)
|
|
#else
|
|
#define KGDB_ASSERT(condition, message)
|
|
#endif
|
|
|
|
#endif
|