/* Generic remote debugging interface for simulators.
- Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
- Free Software Foundation, Inc.
+
+ Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+ 2002 Free Software Foundation, Inc.
+
Contributed by Cygnus Support.
Steve Chamberlain (sac@cygnus.com).
#include "remote-utils.h"
#include "command.h"
#include "regcache.h"
+#include "gdb_assert.h"
+#include "sim-regno.h"
/* Prototypes */
}
}
+int
+legacy_register_sim_regno (int regnum)
+{
+ /* Only makes sense to supply raw registers. */
+ gdb_assert (regnum >= 0 && regnum < NUM_REGS);
+ /* NOTE: cagney/2002-05-13: The old code did it this way and it is
+ suspected that some GDB/SIM combinations may rely on this
+ behavour. The default should be one2one_register_sim_regno
+ (below). */
+ if (REGISTER_NAME (regnum) != NULL
+ && REGISTER_NAME (regnum)[0] != '\0')
+ return regnum;
+ else
+ return LEGACY_SIM_REGNO_IGNORE;
+}
+
+int
+one2one_register_sim_regno (int regnum)
+{
+ /* Only makes sense to supply raw registers. */
+ gdb_assert (regnum >= 0 && regnum < NUM_REGS);
+ return regnum;
+}
+
static void
gdbsim_fetch_register (int regno)
{
- static int warn_user = 1;
if (regno == -1)
{
for (regno = 0; regno < NUM_REGS; regno++)
gdbsim_fetch_register (regno);
+ return;
}
- else if (REGISTER_NAME (regno) != NULL
- && *REGISTER_NAME (regno) != '\0')
+
+ switch (REGISTER_SIM_REGNO (regno))
{
- char buf[MAX_REGISTER_RAW_SIZE];
- int nr_bytes;
- if (REGISTER_SIM_REGNO (regno) >= 0)
+ case LEGACY_SIM_REGNO_IGNORE:
+ break;
+ case SIM_REGNO_DOES_NOT_EXIST:
+ {
+ /* For moment treat a `does not exist' register the same way
+ as an ``unavailable'' register. */
+ char *buf = alloca (MAX_REGISTER_RAW_SIZE);
+ int nr_bytes;
+ memset (buf, 0, MAX_REGISTER_RAW_SIZE);
+ supply_register (regno, buf);
+ set_register_cached (regno, -1);
+ break;
+ }
+ default:
+ {
+ static int warn_user = 1;
+ char *buf = alloca (MAX_REGISTER_RAW_SIZE);
+ int nr_bytes;
+ gdb_assert (regno >= 0 && regno < NUM_REGS);
+ memset (buf, 0, MAX_REGISTER_RAW_SIZE);
nr_bytes = sim_fetch_register (gdbsim_desc,
REGISTER_SIM_REGNO (regno),
buf, REGISTER_RAW_SIZE (regno));
- else
- nr_bytes = 0;
- if (nr_bytes == 0)
- /* register not applicable, supply zero's */
- memset (buf, 0, MAX_REGISTER_RAW_SIZE);
- else if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno)
- && warn_user)
- {
- fprintf_unfiltered (gdb_stderr,
- "Size of register %s (%d/%d) incorrect (%d instead of %d))",
- REGISTER_NAME (regno),
- regno, REGISTER_SIM_REGNO (regno),
- nr_bytes, REGISTER_RAW_SIZE (regno));
- warn_user = 0;
- }
- supply_register (regno, buf);
- if (sr_get_debug ())
- {
- printf_filtered ("gdbsim_fetch_register: %d", regno);
- /* FIXME: We could print something more intelligible. */
- dump_mem (buf, REGISTER_RAW_SIZE (regno));
- }
+ if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno) && warn_user)
+ {
+ fprintf_unfiltered (gdb_stderr,
+ "Size of register %s (%d/%d) incorrect (%d instead of %d))",
+ REGISTER_NAME (regno),
+ regno, REGISTER_SIM_REGNO (regno),
+ nr_bytes, REGISTER_RAW_SIZE (regno));
+ warn_user = 0;
+ }
+ /* FIXME: cagney/2002-05-27: Should check `nr_bytes == 0'
+ indicatingthat GDB and the SIM have different ideas about
+ which registers are fetchable. */
+ /* Else if (nr_bytes < 0): an old simulator, that doesn't
+ think to return the register size. Just assume all is ok. */
+ supply_register (regno, buf);
+ if (sr_get_debug ())
+ {
+ printf_filtered ("gdbsim_fetch_register: %d", regno);
+ /* FIXME: We could print something more intelligible. */
+ dump_mem (buf, REGISTER_RAW_SIZE (regno));
+ }
+ break;
+ }
}
}
{
for (regno = 0; regno < NUM_REGS; regno++)
gdbsim_store_register (regno);
+ return;
}
- else if (REGISTER_NAME (regno) != NULL
- && *REGISTER_NAME (regno) != '\0'
- && REGISTER_SIM_REGNO (regno) >= 0)
+ else if (REGISTER_SIM_REGNO (regno) >= 0)
{
char tmp[MAX_REGISTER_RAW_SIZE];
int nr_bytes;
if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno))
internal_error (__FILE__, __LINE__,
"Register size different to expected");
+ /* FIXME: cagney/2002-05-27: Should check `nr_bytes == 0'
+ indicatingthat GDB and the SIM have different ideas about
+ which registers are fetchable. */
if (sr_get_debug ())
{
printf_filtered ("gdbsim_store_register: %d", regno);
strcpy (arg_buf, "gdbsim"); /* 7 */
/* Specify the byte order for the target when it is both selectable
and explicitly specified by the user (not auto detected). */
- if (TARGET_BYTE_ORDER_SELECTABLE_P
- && !TARGET_BYTE_ORDER_AUTO)
+ if (!TARGET_BYTE_ORDER_AUTO)
{
switch (TARGET_BYTE_ORDER)
{
- case BIG_ENDIAN:
+ case BFD_ENDIAN_BIG:
strcat (arg_buf, " -E big");
break;
case BFD_ENDIAN_LITTLE:
static int
gdbsim_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len,
- int write,
- struct mem_attrib *attrib ATTRIBUTE_UNUSED,
- struct target_ops *target ATTRIBUTE_UNUSED)
+ int write, struct mem_attrib *attrib,
+ struct target_ops *target)
{
if (!program_loaded)
error ("No program loaded.");
projects / deliverable / binutils-gdb.git / blobdiff