mips-stub.h

eCos1.31版

#ifndef CYGONCE_HAL_MIPS_STUB_H
#define CYGONCE_HAL_MIPS_STUB_H
//========================================================================
//
//      mips-stub.h
//
//      MIPS-specific definitions for generic stub
//
//========================================================================
//####COPYRIGHTBEGIN####
//                                                                          
// -------------------------------------------                              
// The contents of this file are subject to the Red Hat eCos Public License 
// Version 1.1 (the "License"); you may not use this file except in         
// compliance with the License.  You may obtain a copy of the License at    
// http://www.redhat.com/                                                   
//                                                                          
// Software distributed under the License is distributed on an "AS IS"      
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
// License for the specific language governing rights and limitations under 
// the License.                                                             
//                                                                          
// The Original Code is eCos - Embedded Configurable Operating System,      
// released September 30, 1998.                                             
//                                                                          
// The Initial Developer of the Original Code is Red Hat.                   
// Portions created by Red Hat are                                          
// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
// All Rights Reserved.                                                     
// -------------------------------------------                              
//                                                                          
//####COPYRIGHTEND####
//========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     Red Hat, nickg
// Contributors:  Red Hat, nickg
// Date:          1998-06-08
// Purpose:       
// Description:   MIPS-specific definitions for generic stub
// Usage:         
//
//####DESCRIPTIONEND####
//
//========================================================================


#include <pkgconf/system.h>

#ifdef __cplusplus
extern "C" {
#endif

#define NUMREGS    90

#if defined(__mips64)
  #define REGSIZE(X) 8
  typedef unsigned long long target_register_t;
#elif defined(CYGPKG_HAL_MIPS_VR4300)
  #define REGSIZE(X) 8
  typedef unsigned long long target_register_t;
#else
  #define REGSIZE(X) 4
  typedef unsigned long target_register_t;
#endif

enum regnames {
        ZERO,   AT,     V0,     V1,     A0,     A1,     A2,     A3,
        T0,     T1,     T2,     T3,     T4,     T5,     T6,     T7,
        S0,     S1,     S2,     S3,     S4,     S5,     S6,     S7,
        T8,     T9,     K0,     K1,     GP,     SP,     S8,     RA,
        SR,     LO,     HI,     BAD,    CAUSE,  PC,
        CONFIG = 84,    CACHE,  DEBUG,  DEPC,   EPC
};

typedef enum regnames regnames_t;

/* Given a trap value TRAP, return the corresponding signal. */
extern int __computeSignal (unsigned int trap_number);

/* Return the SPARC trap number corresponding to the last-taken trap. */
extern int __get_trap_number (void);

/* Return the currently-saved value corresponding to register REG. */
extern target_register_t get_register (regnames_t reg);

/* Store VALUE in the register corresponding to WHICH. */
extern void put_register (regnames_t which, target_register_t value);

/* Set the currently-saved pc register value to PC. This also updates NPC
   as needed. */
extern void set_pc (target_register_t pc);

/* Set things up so that the next user resume will execute one instruction.
   This may be done by setting breakpoints or setting a single step flag
   in the saved user registers, for example. */
void __single_step (void);

/* Clear the single-step state. */
void __clear_single_step (void);

/* If the breakpoint we hit is in the breakpoint() instruction, return a
   non-zero value. */
extern int __is_breakpoint_function (void);

/* Skip the current instruction. */
extern void __skipinst (void);

extern void __install_breakpoints (void);

extern void __clear_breakpoints (void);

#ifdef __cplusplus
}      /* extern "C" */
#endif

#endif // ifndef CYGONCE_HAL_MIPS_STUB_H