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#ifndef CYGONCE_HAL_ARM_STUB_H
#define CYGONCE_HAL_ARM_STUB_H
//========================================================================
//
// arm_stub.h
//
// ARM-specific definitions for generic stub
//
//========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later
// version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): Red Hat, gthomas
// Contributors: Red Hat, gthomas
// Date: 1998-11-26
// Purpose:
// Description: ARM-specific definitions for generic stub
// Usage:
//
//####DESCRIPTIONEND####
//
//========================================================================
#ifdef __cplusplus
extern "C" {
#endif
// The ARM has float (and possibly other coprocessor) registers that are
// larger than it can hold in a target_register_t.
#define TARGET_HAS_LARGE_REGISTERS
// ARM stub has special needs for register handling (not all regs are the
// the same size), so special put_register and get_register are provided.
#define CYGARC_STUB_REGISTER_ACCESS_DEFINED 1
#define NUMREGS (16+8+2) // 16 GPR, 8 FPR (unused), 2 PS
#define REGSIZE( _x_ ) (((_x_) < F0 || (_x_) >= FPS) ? 4 : 12)
// Comment out to allow for default gdb stub packet buffer which is larger.
// #define NUMREGBYTES ((16*4)+(8*12)+(2*4))
#ifndef TARGET_REGISTER_T_DEFINED
#define TARGET_REGISTER_T_DEFINED
typedef unsigned long target_register_t;
#endif
enum regnames {
R0, R1, R2, R3, R4, R5, R6, R7,
R8, R9, R10, FP, IP, SP, LR, PC,
F0, F1, F2, F3, F4, F5, F6, F7,
FPS, PS
};
#define HAL_STUB_REGISTERS_SIZE \
((sizeof(GDB_Registers) + sizeof(target_register_t) - 1) / sizeof(target_register_t))
#define PS_N 0x80000000
#define PS_Z 0x40000000
#define PS_C 0x20000000
#define PS_V 0x10000000
#define PS_I CPSR_IRQ_DISABLE
#define PS_F CPSR_FIQ_DISABLE
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);
extern int __is_bsp_syscall(void);
//------------------------------------------------------------------------
// Special definition of CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION
#ifdef CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT
// we can only do this at all if break support is enabled:
#ifdef __thumb__
// If this macro is used from Thumb code, we need to pass this information
// along to the place_break function so it can do the right thing.
#define CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION( _old_ ) \
do { \
HAL_DISABLE_INTERRUPTS(_old_); \
cyg_hal_gdb_place_break((target_register_t)((unsigned long)&&cyg_hal_gdb_break_place + 1));\
} while ( 0 )
#else
#define CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION( _old_ ) \
do { \
HAL_DISABLE_INTERRUPTS(_old_); \
cyg_hal_gdb_place_break((target_register_t)&&cyg_hal_gdb_break_place ); \
} while ( 0 )
#endif // __thumb_
// Also define ..LEAVE.. with a trick to *use* the label - sometimes the
// tools want to move the label, which is bad.
#define CYG_HAL_GDB_LEAVE_CRITICAL_IO_REGION( _old_ ) \
do { \
cyg_hal_gdb_remove_break( (target_register_t)&&cyg_hal_gdb_break_place ); \
HAL_RESTORE_INTERRUPTS(_old_); \
_old_ = 1; /* actually use the label as a label... */ \
cyg_hal_gdb_break_place: \
if ( (_old_)-- > 0 ) /* ...or the compiler might move it! */ \
goto cyg_hal_gdb_break_place; \
} while ( 0 )
#endif // CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif // ifndef CYGONCE_HAL_ARM_STUB_H
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