239 lines
7.1 KiB
C
239 lines
7.1 KiB
C
/* sparc-dependent portions of the RPC protocol
|
|
used with a VxWorks target
|
|
|
|
Contributed by Wind River Systems.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program 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 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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 this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
#include <stdio.h>
|
|
#include "defs.h"
|
|
|
|
#include "vx-share/regPacket.h"
|
|
#include "frame.h"
|
|
#include "inferior.h"
|
|
#include "wait.h"
|
|
#include "target.h"
|
|
#include "gdbcore.h"
|
|
#include "command.h"
|
|
#include "symtab.h"
|
|
#include "symfile.h" /* for struct complaint */
|
|
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <fcntl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/socket.h>
|
|
|
|
#ifdef _AIX /* IBM claims "void *malloc()" not char * */
|
|
#define malloc bogon_malloc
|
|
#endif
|
|
|
|
#include <rpc/rpc.h>
|
|
#include <sys/time.h> /* UTek's <rpc/rpc.h> doesn't #incl this */
|
|
#include <netdb.h>
|
|
#include "vx-share/ptrace.h"
|
|
#include "vx-share/xdr_ptrace.h"
|
|
#include "vx-share/xdr_ld.h"
|
|
#include "vx-share/xdr_rdb.h"
|
|
#include "vx-share/dbgRpcLib.h"
|
|
|
|
/* get rid of value.h if possible */
|
|
#include <value.h>
|
|
#include <symtab.h>
|
|
|
|
/* Flag set if target has fpu */
|
|
|
|
extern int target_has_fp;
|
|
|
|
/* sparc floating point format descriptor, from "sparc-tdep.c." */
|
|
|
|
extern struct ext_format ext_format_sparc;
|
|
|
|
/* Generic register read/write routines in remote-vx.c. */
|
|
|
|
extern void net_read_registers ();
|
|
extern void net_write_registers ();
|
|
|
|
/* Read a register or registers from the VxWorks target.
|
|
REGNO is the register to read, or -1 for all; currently,
|
|
it is ignored. FIXME look at regno to improve efficiency. */
|
|
|
|
void
|
|
vx_read_register (regno)
|
|
int regno;
|
|
{
|
|
char sparc_greg_packet[SPARC_GREG_PLEN];
|
|
char sparc_fpreg_packet[SPARC_FPREG_PLEN];
|
|
CORE_ADDR sp;
|
|
|
|
/* Get general-purpose registers. When copying values into
|
|
registers [], don't assume that a location in registers []
|
|
is properly aligned for the target data type. */
|
|
|
|
net_read_registers (sparc_greg_packet, SPARC_GREG_PLEN, PTRACE_GETREGS);
|
|
|
|
/* Now copy the register values into registers[].
|
|
Note that this code depends on the ordering of the REGNUMs
|
|
as defined in "tm-sparc.h". */
|
|
|
|
bcopy (&sparc_greg_packet[SPARC_R_G0],
|
|
®isters[REGISTER_BYTE (G0_REGNUM)], 32 * SPARC_GREG_SIZE);
|
|
bcopy (&sparc_greg_packet[SPARC_R_Y],
|
|
®isters[REGISTER_BYTE (Y_REGNUM)], 6 * SPARC_GREG_SIZE);
|
|
|
|
/* Now write the local and in registers to the register window
|
|
spill area in the frame. VxWorks does not do this for the
|
|
active frame automatically; it greatly simplifies debugging
|
|
(FRAME_FIND_SAVED_REGS, in particular, depends on this). */
|
|
|
|
sp = extract_address (®isters[REGISTER_BYTE (SP_REGNUM)],
|
|
REGISTER_RAW_SIZE (CORE_ADDR));
|
|
write_memory (sp, ®isters[REGISTER_BYTE (L0_REGNUM)],
|
|
16 * REGISTER_RAW_SIZE (L0_REGNUM));
|
|
|
|
/* If the target has floating point registers, fetch them.
|
|
Otherwise, zero the floating point register values in
|
|
registers[] for good measure, even though we might not
|
|
need to. */
|
|
|
|
if (target_has_fp)
|
|
{
|
|
net_read_registers (sparc_fpreg_packet, SPARC_FPREG_PLEN,
|
|
PTRACE_GETFPREGS);
|
|
bcopy (&sparc_fpreg_packet[SPARC_R_FP0],
|
|
®isters[REGISTER_BYTE (FP0_REGNUM)], 32 * SPARC_FPREG_SIZE);
|
|
bcopy (&sparc_fpreg_packet[SPARC_R_FSR],
|
|
®isters[REGISTER_BYTE (FPS_REGNUM)], 1 * SPARC_FPREG_SIZE);
|
|
}
|
|
else
|
|
{
|
|
bzero (®isters[REGISTER_BYTE (FP0_REGNUM)], 32 * SPARC_FPREG_SIZE);
|
|
bzero (®isters[REGISTER_BYTE (FPS_REGNUM)], 1 * SPARC_FPREG_SIZE);
|
|
}
|
|
|
|
/* Mark the register cache valid. */
|
|
|
|
registers_fetched ();
|
|
}
|
|
|
|
/* Store a register or registers into the VxWorks target.
|
|
REGNO is the register to store, or -1 for all; currently,
|
|
it is ignored. FIXME look at regno to improve efficiency. */
|
|
|
|
void
|
|
vx_write_register (regno)
|
|
int regno;
|
|
{
|
|
char sparc_greg_packet[SPARC_GREG_PLEN];
|
|
char sparc_fpreg_packet[SPARC_FPREG_PLEN];
|
|
int in_gp_regs;
|
|
int in_fp_regs;
|
|
CORE_ADDR sp;
|
|
|
|
/* Store general purpose registers. When copying values from
|
|
registers [], don't assume that a location in registers []
|
|
is properly aligned for the target data type. */
|
|
|
|
in_gp_regs = 1;
|
|
in_fp_regs = 1;
|
|
if (regno >= 0)
|
|
{
|
|
if ((G0_REGNUM <= regno && regno <= I7_REGNUM)
|
|
|| (Y_REGNUM <= regno && regno <= NPC_REGNUM))
|
|
in_fp_regs = 0;
|
|
else
|
|
in_gp_regs = 0;
|
|
}
|
|
if (in_gp_regs)
|
|
{
|
|
bcopy (®isters[REGISTER_BYTE (G0_REGNUM)],
|
|
&sparc_greg_packet[SPARC_R_G0], 32 * SPARC_GREG_SIZE);
|
|
bcopy (®isters[REGISTER_BYTE (Y_REGNUM)],
|
|
&sparc_greg_packet[SPARC_R_Y], 6 * SPARC_GREG_SIZE);
|
|
|
|
net_write_registers (sparc_greg_packet, SPARC_GREG_PLEN, PTRACE_SETREGS);
|
|
|
|
/* If this is a local or in register, or we're storing all
|
|
registers, update the register window spill area. */
|
|
|
|
if (regno < 0 || (L0_REGNUM <= regno && regno <= I7_REGNUM))
|
|
{
|
|
sp = extract_address (®isters[REGISTER_BYTE (SP_REGNUM)],
|
|
REGISTER_RAW_SIZE (CORE_ADDR));
|
|
write_memory (sp, ®isters[REGISTER_BYTE (L0_REGNUM)],
|
|
16 * REGISTER_RAW_SIZE (L0_REGNUM));
|
|
}
|
|
}
|
|
|
|
/* Store floating point registers if the target has them. */
|
|
|
|
if (in_fp_regs && target_has_fp)
|
|
{
|
|
bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)],
|
|
&sparc_fpreg_packet[SPARC_R_FP0], 32 * SPARC_FPREG_SIZE);
|
|
bcopy (®isters[REGISTER_BYTE (FPS_REGNUM)],
|
|
&sparc_fpreg_packet[SPARC_R_FSR], 1 * SPARC_FPREG_SIZE);
|
|
|
|
net_write_registers (sparc_fpreg_packet, SPARC_FPREG_PLEN,
|
|
PTRACE_SETFPREGS);
|
|
}
|
|
}
|
|
|
|
/* Convert from an extended float to a double.
|
|
The extended float is stored as raw data pointed to by FROM.
|
|
Return the converted value as raw data in the double pointed to by TO. */
|
|
|
|
void
|
|
vx_convert_to_virtual (regno, from, to)
|
|
int regno;
|
|
char *from;
|
|
char *to;
|
|
{
|
|
if (REGISTER_CONVERTIBLE (regno))
|
|
{
|
|
if (target_has_fp)
|
|
ieee_extended_to_double (&ext_format_sparc, from, to);
|
|
else
|
|
bzero (to, sizeof (double));
|
|
}
|
|
else
|
|
bcopy (from, to, REGISTER_VIRTUAL_SIZE (regno));
|
|
}
|
|
|
|
/* The converse: convert from a double to an extended float.
|
|
The double is stored as raw data pointed to by FROM.
|
|
Return the converted value as raw data in the extended
|
|
float pointed to by TO. */
|
|
|
|
void
|
|
vx_convert_from_virtual (regno, from, to)
|
|
int regno;
|
|
char *from;
|
|
char *to;
|
|
{
|
|
if (REGISTER_CONVERTIBLE (regno))
|
|
{
|
|
if (target_has_fp)
|
|
double_to_ieee_extended (&ext_format_sparc, from, to);
|
|
else
|
|
bzero (to, REGISTER_RAW_SIZE (FP0_REGNUM));
|
|
}
|
|
else
|
|
bcopy (from, to, REGISTER_VIRTUAL_SIZE (regno));
|
|
}
|