A C standard library for sh3eb-elf.
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/*
* Copyright (c) 1995, 1996 Cygnus Support
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
static const char hexchars[]="0123456789abcdef";
typedef void (*exception_t)(int); /* pointer to function with int parm */
/*
* This is the default function handler to be called with all exceptions.
*/
extern exception_t default_trap_hook;
/* this is used to make Unix style signale nukbers to an exception */
struct trap_info
{
unsigned char tt; /* exception number */
unsigned char signo; /* corresponding signal number */
};
/*
* prototypes for the functions in debug.c. As these'll only be used with GCC,
* we don't worry about no stinkin K&R comilers.
*/
extern void exception_handler (int, unsigned long);
extern unsigned char *mem2hex(unsigned char *, unsigned char *, int, int);
extern unsigned char *hex2mem(unsigned char *, unsigned char *, int, int);
extern void getpacket(unsigned char *);
extern void putpacket(unsigned char *);
extern char *make_return_packet(int);
extern void set_debug_traps();
extern int computeSignal(int);
extern char digit2hex(int);
extern int hex2digit(int);
extern void debuglogs(int level, char *msg);
extern int hex2int();
extern char *int2hex(int);
extern void gdb_event_loop(int, unsigned long *);
extern char *gdb_read_registers(); /* g - read registers */
extern char *gdb_write_registers(char *); /* G - write registers */
extern char *gdb_read_memory(long, int); /* m - read memory */
extern char *gdb_write_memory(long, int, char *);/* M write memory */
extern char *gdb_continue(int, long ); /* c - continue */
extern char *gdb_step(int, long); /* s - step instruction(s) */
extern char *gdb_kill(); /* k - kill program */
extern char *gdb_last_signal(); /* ? - last signal */
extern char *gdb_baudrate(int); /* b - change baud rate */
extern char *gdb_dump_state(); /* T - dump state */
extern char *gdb_set_thread(int, int); /* H - set thread */
extern char *gdb_detach(); /* D - detach */
extern char *gdb_read_reg(int); /* p - read one register */
extern char *gdb_write_reg(int, long); /* P - write one register */
extern char *gdb_exited(); /* W - process exited */
extern char *gdb_terminated(); /* X - process terminated */
extern char *gdb_hex(); /* O - hex encoding */
extern char *gdb_thread_alive(int); /* A - tread alive request */
extern char *gdb_extended(); /* ! - extended protocol */
extern char *gdb_debug(); /* d - toggle stub diagnostics */
extern char *gdb_toggle(); /* unsupported, toggle stub on/off */
extern char *gdb_reset(); /* r - reset target */
extern char *gdb_search(long, long, long); /* t - search backwards */
extern char *gdb_query(char *); /* q - general query */
extern char *gdb_set(char *); /* Q - set value */
/*
* indicate to caller of mem2hex or hex2mem that there has been an error.
* 0 means ok, 1 means error
*/
extern volatile int mem_err;
/*
* indicate whether the debug vectors have been initialized
* 0 means not yet, 1 means yep, it's ready.
*/
extern int initialized;
/*
* 1 means print debugging messages from the target, 0 means be quiet.
*/
extern int remote_debug;
/*
* Set up the command processing required for GDB
*/
struct gdb_ops {
/*
* these functions are the most minimal working subset top get full
* functionality for remote debugging
*/
char *(*gdb_read_registers); /* g - read registers */
char *(*gdb_write_registers)(char *); /* G - write registers */
char *(*gdb_read_memory)(long, int); /* m - read memory */
char *(*gdb_write_memory)(long, int, char *);/* M write memory */
char *(*gdb_continue)(int, long ); /* c - continue */
char *(*gdb_step)(int, long); /* s - step instruction(s) */
char *(*gdb_kill); /* k - kill program */
char *(*gdb_last_signal); /* ? - last signal */
char *(*gdb_baudrate)(int); /* b - change baud rate */
char *(*gdb_dump_state); /* T - dump state */
/*
* these functions are for a more sophisticated target, typically
* running a simple RTOS.
*/
char *(*gdb_set_thread)(int, int); /* H - set thread */
char *(*gdb_detach); /* D - detach */
char *(*gdb_read_reg)(int); /* p - read one register */
char *(*gdb_write_reg)(int, long); /* P - write one register */
char *(*gdb_exited); /* W - process exited */
char *(*gdb_terminated); /* X - process terminated */
char *(*gdb_hex); /* O - hex encoding */
char *(*gdb_thread_alive)(int); /* A - tread alive request */
/* FIXME: not standard yet */
char *(*gdb_extended); /* ! - extended protocol */
char *(*gdb_debug); /* d - toggle stub diagnostics */
char *(*gdb_toggle); /* unsupported, toggle stub on/off */
char *(*gdb_reset); /* r - reset target */
char *(*gdb_search)(long, long, long); /* t - search backwards */
char *(*gdb_query)(char *); /* q - general query */
char *(*gdb_set)(long); /* Q - set value */
};
/*
* BUFMAX defines the maximum number of characters in inbound/outbound buffers
* at least NUMREGBYTES*2 are needed for register packets
*/
#define BUFMAX 2048
extern char packet_in_buf[BUFMAX];
extern char packet_out_buf[BUFMAX];
extern int packet_index;
#define DEBUG(x, y) debuglog(x, y);
#define set_debug_level(x) remote_debug = x;
#define OK 0
#define ERROR -1
#define ENN(x) "x"
#define MAY_FAULT 1
#define NO_FAULT 0