83547f02b7
overlay support, not data overlay. Support spu-*-* target in this mode. * gdb.base/ovlymgr.c: Provide stubs for spu target. * gdb.base/spu.ld: New file.
246 lines
6.1 KiB
C
246 lines
6.1 KiB
C
|
|
/*
|
|
* Ovlymgr.c -- Runtime Overlay Manager for the GDB testsuite.
|
|
*/
|
|
|
|
#include "ovlymgr.h"
|
|
|
|
#ifdef __SPU__
|
|
/* SPU tool chain provides its own overlay manager. */
|
|
bool
|
|
OverlayLoad (unsigned long ovlyno)
|
|
{
|
|
}
|
|
bool
|
|
OverlayUnload (unsigned long ovlyno)
|
|
{
|
|
}
|
|
#else /* __SPU__ */
|
|
|
|
/* Local functions and data: */
|
|
|
|
extern unsigned long _ovly_table[][4];
|
|
extern unsigned long _novlys __attribute__ ((section (".data")));
|
|
enum ovly_index { VMA, SIZE, LMA, MAPPED};
|
|
|
|
static void ovly_copy (unsigned long dst, unsigned long src, long size);
|
|
|
|
/* Flush the data and instruction caches at address START for SIZE bytes.
|
|
Support for each new port must be added here. */
|
|
/* FIXME: Might be better to have a standard libgloss function that
|
|
ports provide that we can then use. Use libgloss instead of newlib
|
|
since libgloss is the one intended to handle low level system issues.
|
|
I would suggest something like _flush_cache to avoid the user's namespace
|
|
but not be completely obscure as other things may need this facility. */
|
|
|
|
static void
|
|
FlushCache (void)
|
|
{
|
|
#ifdef __M32R__
|
|
volatile char *mspr = (char *) 0xfffffff7;
|
|
*mspr = 1;
|
|
#endif
|
|
}
|
|
|
|
/* _ovly_debug_event:
|
|
* Debuggers may set a breakpoint here, to be notified
|
|
* when the overlay table has been modified.
|
|
*/
|
|
static void
|
|
_ovly_debug_event (void)
|
|
{
|
|
}
|
|
|
|
/* OverlayLoad:
|
|
* Copy the overlay into its runtime region,
|
|
* and mark the overlay as "mapped".
|
|
*/
|
|
|
|
bool
|
|
OverlayLoad (unsigned long ovlyno)
|
|
{
|
|
unsigned long i;
|
|
|
|
if (ovlyno < 0 || ovlyno >= _novlys)
|
|
exit (-1); /* fail, bad ovly number */
|
|
|
|
if (_ovly_table[ovlyno][MAPPED])
|
|
return TRUE; /* this overlay already mapped -- nothing to do! */
|
|
|
|
for (i = 0; i < _novlys; i++)
|
|
if (i == ovlyno)
|
|
_ovly_table[i][MAPPED] = 1; /* this one now mapped */
|
|
else if (_ovly_table[i][VMA] == _ovly_table[ovlyno][VMA])
|
|
_ovly_table[i][MAPPED] = 0; /* this one now un-mapped */
|
|
|
|
ovly_copy (_ovly_table[ovlyno][VMA],
|
|
_ovly_table[ovlyno][LMA],
|
|
_ovly_table[ovlyno][SIZE]);
|
|
|
|
FlushCache ();
|
|
_ovly_debug_event ();
|
|
return TRUE;
|
|
}
|
|
|
|
/* OverlayUnload:
|
|
* Copy the overlay back into its "load" region.
|
|
* Does NOT mark overlay as "unmapped", therefore may be called
|
|
* more than once for the same mapped overlay.
|
|
*/
|
|
|
|
bool
|
|
OverlayUnload (unsigned long ovlyno)
|
|
{
|
|
if (ovlyno < 0 || ovlyno >= _novlys)
|
|
exit (-1); /* fail, bad ovly number */
|
|
|
|
if (!_ovly_table[ovlyno][MAPPED])
|
|
exit (-1); /* error, can't copy out a segment that's not "in" */
|
|
|
|
ovly_copy (_ovly_table[ovlyno][LMA],
|
|
_ovly_table[ovlyno][VMA],
|
|
_ovly_table[ovlyno][SIZE]);
|
|
|
|
_ovly_debug_event ();
|
|
return TRUE;
|
|
}
|
|
|
|
#ifdef __D10V__
|
|
#define IMAP0 (*(short *)(0xff00))
|
|
#define IMAP1 (*(short *)(0xff02))
|
|
#define DMAP (*(short *)(0xff04))
|
|
|
|
static void
|
|
D10VTranslate (unsigned long logical,
|
|
short *dmap,
|
|
unsigned long **addr)
|
|
{
|
|
unsigned long physical;
|
|
unsigned long seg;
|
|
unsigned long off;
|
|
|
|
/* to access data, we use the following mapping
|
|
0x00xxxxxx: Logical data address segment (DMAP translated memory)
|
|
0x01xxxxxx: Logical instruction address segment (IMAP translated memory)
|
|
0x10xxxxxx: Physical data memory segment (On-chip data memory)
|
|
0x11xxxxxx: Physical instruction memory segment (On-chip insn memory)
|
|
0x12xxxxxx: Phisical unified memory segment (Unified memory)
|
|
*/
|
|
|
|
/* Addresses must be correctly aligned */
|
|
if (logical & (sizeof (**addr) - 1))
|
|
exit (-1);
|
|
|
|
/* If the address is in one of the two logical address spaces, it is
|
|
first translated into a physical address */
|
|
seg = (logical >> 24);
|
|
off = (logical & 0xffffffL);
|
|
switch (seg)
|
|
{
|
|
case 0x00: /* in logical data address segment */
|
|
if (off <= 0x7fffL)
|
|
physical = (0x10L << 24) + off;
|
|
else
|
|
/* Logical address out side of on-chip segment, not
|
|
supported */
|
|
exit (-1);
|
|
break;
|
|
case 0x01: /* in logical instruction address segment */
|
|
{
|
|
short map;
|
|
if (off <= 0x1ffffL)
|
|
map = IMAP0;
|
|
else if (off <= 0x3ffffL)
|
|
map = IMAP1;
|
|
else
|
|
/* Logical address outside of IMAP[01] segment, not
|
|
supported */
|
|
exit (-1);
|
|
if (map & 0x1000L)
|
|
{
|
|
/* Instruction memory */
|
|
physical = (0x11L << 24) | off;
|
|
}
|
|
else
|
|
{
|
|
/* Unified memory */
|
|
physical = ((map & 0x7fL) << 17) + (off & 0x1ffffL);
|
|
if (physical > 0xffffffL)
|
|
/* Address outside of unified address segment */
|
|
exit (-1);
|
|
physical |= (0x12L << 24);
|
|
}
|
|
break;
|
|
}
|
|
case 0x10:
|
|
case 0x11:
|
|
case 0x12:
|
|
physical = logical;
|
|
break;
|
|
default:
|
|
exit (-1); /* error */
|
|
}
|
|
|
|
seg = (physical >> 24);
|
|
off = (physical & 0xffffffL);
|
|
switch (seg)
|
|
{
|
|
case 0x10: /* dst is a 15 bit offset into the on-chip memory */
|
|
*dmap = 0;
|
|
*addr = (long *) (0x0000 + ((short)off & 0x7fff));
|
|
break;
|
|
case 0x11: /* dst is an 18-bit offset into the on-chip
|
|
instruction memory */
|
|
*dmap = 0x1000L | ((off & 0x3ffffL) >> 14);
|
|
*addr = (long *) (0x8000 + ((short)off & 0x3fff));
|
|
break;
|
|
case 0x12: /* dst is a 24-bit offset into unified memory */
|
|
*dmap = off >> 14;
|
|
*addr = (long *) (0x8000 + ((short)off & 0x3fff));
|
|
break;
|
|
default:
|
|
exit (-1); /* error */
|
|
}
|
|
}
|
|
#endif /* __D10V__ */
|
|
|
|
static void
|
|
ovly_copy (unsigned long dst, unsigned long src, long size)
|
|
{
|
|
#ifdef __D10V__
|
|
unsigned long *s, *d, tmp;
|
|
short dmap_src, dmap_dst;
|
|
short dmap_save;
|
|
|
|
/* all section sizes should by multiples of 4 bytes */
|
|
dmap_save = DMAP;
|
|
|
|
D10VTranslate (src, &dmap_src, &s);
|
|
D10VTranslate (dst, &dmap_dst, &d);
|
|
|
|
while (size > 0)
|
|
{
|
|
/* NB: Transfer 4 byte (long) quantites, problems occure
|
|
when only two bytes are transfered */
|
|
DMAP = dmap_src;
|
|
tmp = *s;
|
|
DMAP = dmap_dst;
|
|
*d = tmp;
|
|
d++;
|
|
s++;
|
|
size -= sizeof (tmp);
|
|
src += sizeof (tmp);
|
|
dst += sizeof (tmp);
|
|
if ((src & 0x3fff) == 0)
|
|
D10VTranslate (src, &dmap_src, &s);
|
|
if ((dst & 0x3fff) == 0)
|
|
D10VTranslate (dst, &dmap_dst, &d);
|
|
}
|
|
DMAP = dmap_save;
|
|
#else
|
|
memcpy ((void *) dst, (void *) src, size);
|
|
#endif /* D10V */
|
|
return;
|
|
}
|
|
|
|
#endif /* __SPU__ */
|