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#ifndef _IPXE_GDBSTUB_H
#define _IPXE_GDBSTUB_H
/** @file
*
* GDB remote debugging
*
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <stdint.h>
#include <ipxe/tables.h>
#include <gdbmach.h>
/**
* A transport mechanism for the GDB protocol
*
*/
struct gdb_transport {
/** Transport name */
const char *name;
/**
* Set up the transport given a list of arguments
*
* @v argc Number of arguments
* @v argv Argument list
* @ret Return status code
*
* Note that arguments start at argv[0].
*/
int ( * init ) ( int argc, char **argv );
/**
* Perform a blocking read
*
* @v buf Buffer
* @v len Size of buffer
* @ret Number of bytes read into buffer
*/
size_t ( * recv ) ( char *buf, size_t len );
/**
* Write, may block
*
* @v buf Buffer
* @v len Size of buffer
*/
void ( * send ) ( const char *buf, size_t len );
};
#define GDB_TRANSPORTS __table ( struct gdb_transport, "gdb_transports" )
#define __gdb_transport __table_entry ( GDB_TRANSPORTS, 01 )
/**
* Look up GDB transport by name
*
* @v name Name of transport
* @ret GDB transport or NULL
*/
extern struct gdb_transport *find_gdb_transport ( const char *name );
/**
* Break into the debugger using the given transport
*
* @v trans GDB transport
*/
extern void gdbstub_start ( struct gdb_transport *trans );
/**
* Interrupt handler
*
* @signo POSIX signal number
* @regs CPU register snapshot
**/
extern void gdbstub_handler ( int signo, gdbreg_t *regs );
#endif /* _IPXE_GDBSTUB_H */
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