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//==========================================================================
//
// arm-mon.c
//
// Support code to extend the generic monitor code to support
// ARM(R) processors.
//
//==========================================================================
// ####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):
// Contributors: gthomas
// Date: 1999-10-20
// Purpose: Support code to extend the generic monitor code to support
// ARM(R) processors.
// Description: Further board specific support is in other files.
// This file contains:
// register names lookup table
//
// Empty Stubs:
// Interval timer - This should really belong to the application
// operating system.
//
// Should not contain:
// low level uart getchar and putchar functions
// delay function to support uart
//
// ARM is a Registered Trademark of Advanced RISC Machines
// Limited.
// Other Brands and Trademarks are the property of their
// respective owners.
//
//####DESCRIPTIONEND####
//
//=========================================================================
#include <setjmp.h>
#include <bsp/bsp.h>
#include <bsp/cpu.h>
#ifdef DISASSEMBLER
#include <dis-asm.h>
#endif
#include "cpu_info.h"
#include "monitor.h"
/* This module is required to provide many of the services defined
in tservice.h */
static char *apcs_names[] = {
"a1", "a2", "a3", "a4",
"v1", "v2", "v3", "v4",
"v5", "v6", "sl", "fp",
"ip", "sp", "lr", "pc",
#if HAVE_FLOAT_REGS
"f0", "f1", "f2", "f3",
"f4", "f5", "f6", "f7",
"fps",
#endif
"ps"
};
static char *standard_names[] =
{
"r0", "r1", "r2", "r3",
"r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11",
"r12", "r13", "r14", "pc",
#if HAVE_FLOAT_REGS
"f0", "f1", "f2", "f3",
"f4", "f5", "f6", "f7",
"fps",
#endif
"ps",
};
void arm_othernames (void);
struct regstruct regtab[] =
{
{ 0, REG_R0, REGTYPE_INT },
{ 0, REG_R1, REGTYPE_INT },
{ 0, REG_R2, REGTYPE_INT },
{ 0, REG_R3, REGTYPE_INT },
{ 0, REG_R4, REGTYPE_INT },
{ 0, REG_R5, REGTYPE_INT },
{ 0, REG_R6, REGTYPE_INT },
{ 0, REG_R7, REGTYPE_INT },
{ 0, REG_R8, REGTYPE_INT },
{ 0, REG_R9, REGTYPE_INT },
{ 0, REG_R10, REGTYPE_INT },
{ 0, REG_R11, REGTYPE_INT },
{ 0, REG_R12, REGTYPE_INT },
{ 0, REG_SP, REGTYPE_INT },
{ 0, REG_LR, REGTYPE_INT },
{ 0, REG_PC, REGTYPE_INT },
#if HAVE_FLOAT_REGS
{ 0, REG_F0, REGTYPE_FLOAT },
{ 0, REG_F1, REGTYPE_FLOAT },
{ 0, REG_F2, REGTYPE_FLOAT },
{ 0, REG_F3, REGTYPE_FLOAT },
{ 0, REG_F4, REGTYPE_FLOAT },
{ 0, REG_F5, REGTYPE_FLOAT },
{ 0, REG_F6, REGTYPE_FLOAT },
{ 0, REG_F6, REGTYPE_FLOAT },
{ 0, REG_FPS, REGTYPE_FLOAT },
#endif
{ 0, REG_CPSR, REGTYPE_INT },
{ 0, 0, 0 } /* Terminating element must be last */
} ;
void
initialize_mon(void)
{
/* FIXME: Convert ALL variable initializations to assignments
in order to support ROMABLE CODE.
This includes the register table
*/
/*
* Call arm_othernames to sync up Cygmon and the disassembler
* and ensure they are using the same set of registernames
*/
arm_othernames();
/*
* Call arm_othernames again to revert to the assembler
* default names
*/
arm_othernames();
} /* initialize_mon */
/*
read_memory
write_memory
Defaults to generic_mem.c
*/
/* SET_BREAKPOINT -
CLEAR_BREAKPOINT
Defaults to generic_bp32.c
*/
#ifndef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
/* Return the currently-saved value corresponding to register "regnum". */
target_regval_t
get_register (int regnum)
{
struct regstruct *p;
target_regval_t reg;
int offset, len;
char *dest = (char*)0;
for (p = regtab; p->registername && p->registernumber != regnum; ++p)
;
if (p->registername) {
len = bsp_regsize(p->registernumber);
offset = bsp_regbyte(p->registernumber);
switch (p->registertype) {
case REGTYPE_INT:
dest = (char*)&(reg.i);
break;
#if HAVE_FLOAT_REGS
case REGTYPE_FLOAT:
dest = (char*)&(reg.f);
break;
#endif
#if HAVE_DOUBLE_REGS
case REGTYPE_DOUBLE:
dest = (char*)&(reg.d);
break;
#endif
}
if (dest)
memcpy(dest, (char *)mon_saved_regs + offset, len);
} else
reg.i = 0;
return reg;
}
/* Store VALUE in the register corresponding to REGNUM. */
void
put_register (int regnum, target_regval_t value)
{
int offset, len;
len = bsp_regsize(regnum);
offset = bsp_regbyte(regnum);
memcpy((char *)mon_saved_regs + offset, &value, len);
}
#endif // !CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
/* Change to the alternate register set names */
void
arm_othernames (void)
{
static int regset = 1;
char **name;
int i;
#ifdef DISASSEMBLER
/* Change the disassembler */
regset = arm_toggle_regnames();
#else
regset = (regset == 0) ? 1 : 0;
#endif
/* Change cygmon */
if (regset == 1)
/* Disassembler is using apcs names. */
name = apcs_names;
else
/* Disassembler is using standard names. */
name = standard_names;
for (i = 0; i < (sizeof(apcs_names)/sizeof(apcs_names[0])); i++)
regtab[i].registername = name[i];
}
#ifdef __ECOS__
#include <pkgconf/hal.h>
#include <cyg/hal/hal_arch.h>
#include "bsp/common/bsp_if.h"
int
machine_syscall(HAL_SavedRegisters *regs)
{
int res, err;
err = _bsp_do_syscall(regs->d[0], // Function
regs->d[1], regs->d[2], regs->d[3], 0, // arguments,
&res);
regs->d[0] = res;
regs->pc += 4; // Advance PC
return err;
}
#endif
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