[deliverable/binutils-gdb.git] / gdb / remote-vxsparc.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., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include <stdio.h>
#include "defs.h"

#include "vx-share/regPacket.h"
#include "frame.h"
#include "inferior.h"
#include "target.h"
#include "gdbcore.h"
#include "command.h"
#include "symtab.h"
#include "symfile.h"
#include "regcache.h"

#include "gdb_string.h"
#include <errno.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 (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],
	 &deprecated_registers[REGISTER_BYTE (G0_REGNUM)],
	 32 * SPARC_GREG_SIZE);
  bcopy (&sparc_greg_packet[SPARC_R_Y],
	 &deprecated_registers[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 (&deprecated_registers[REGISTER_BYTE (SP_REGNUM)],
			REGISTER_RAW_SIZE (SP_REGNUM));
  write_memory (sp, &deprecated_registers[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],
	     &deprecated_registers[REGISTER_BYTE (FP0_REGNUM)],
	     32 * SPARC_FPREG_SIZE);
      bcopy (&sparc_fpreg_packet[SPARC_R_FSR],
	     &deprecated_registers[REGISTER_BYTE (FPS_REGNUM)],
	     1 * SPARC_FPREG_SIZE);
    }
  else
    {
      bzero (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM)],
	     32 * SPARC_FPREG_SIZE);
      bzero (&deprecated_registers[REGISTER_BYTE (FPS_REGNUM)],
	     1 * SPARC_FPREG_SIZE);
    }

  /* Mark the register cache valid.  */

  deprecated_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 (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 (&deprecated_registers[REGISTER_BYTE (G0_REGNUM)],
	     &sparc_greg_packet[SPARC_R_G0], 32 * SPARC_GREG_SIZE);
      bcopy (&deprecated_registers[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 (&deprecated_registers[REGISTER_BYTE (SP_REGNUM)],
				REGISTER_RAW_SIZE (SP_REGNUM));
	  write_memory (sp, &deprecated_registers[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 (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM)],
	     &sparc_fpreg_packet[SPARC_R_FP0], 32 * SPARC_FPREG_SIZE);
      bcopy (&deprecated_registers[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);
    }
}
Commit	Line	Data
c906108c SS	1	/* sparc-dependent portions of the RPC protocol
	2	used with a VxWorks target
	3
c5aa993b	4	Contributed by Wind River Systems.
c906108c	5
c5aa993b	6	This file is part of GDB.
c906108c	7
c5aa993b JM	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 2 of the License, or
	11	(at your option) any later version.
c906108c	12
c5aa993b JM	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
c906108c	17
c5aa993b JM	18	You should have received a copy of the GNU General Public License
	19	along with this program; if not, write to the Free Software
	20	Foundation, Inc., 59 Temple Place - Suite 330,
	21	Boston, MA 02111-1307, USA. */
c906108c SS	22
	23	#include <stdio.h>
	24	#include "defs.h"
	25
c5aa993b	26	#include "vx-share/regPacket.h"
c906108c SS	27	#include "frame.h"
c906108c SS	28	#include "inferior.h"
c906108c SS	29	#include "target.h"
	30	#include "gdbcore.h"
	31	#include "command.h"
	32	#include "symtab.h"
72367fb4	33	#include "symfile.h"
4e052eda	34	#include "regcache.h"
c906108c SS	35
	36	#include "gdb_string.h"
	37	#include <errno.h>
c906108c SS	38	#include <fcntl.h>
	39	#include <sys/types.h>
	40	#include <sys/time.h>
	41	#include <sys/socket.h>
	42
c5aa993b	43	#ifdef _AIX /* IBM claims "void malloc()" not char */
c906108c SS	44	#define malloc bogon_malloc
	45	#endif
	46
	47	#include <rpc/rpc.h>
	48	#include <sys/time.h> /* UTek's <rpc/rpc.h> doesn't #incl this */
	49	#include <netdb.h>
	50	#include "vx-share/ptrace.h"
	51	#include "vx-share/xdr_ptrace.h"
	52	#include "vx-share/xdr_ld.h"
	53	#include "vx-share/xdr_rdb.h"
	54	#include "vx-share/dbgRpcLib.h"
	55
	56	/* get rid of value.h if possible */
	57	#include <value.h>
	58	#include <symtab.h>
	59
	60	/* Flag set if target has fpu */
	61
	62	extern int target_has_fp;
	63
	64	/* sparc floating point format descriptor, from "sparc-tdep.c." */
	65
	66	extern struct ext_format ext_format_sparc;
	67
	68	/* Generic register read/write routines in remote-vx.c. */
	69
	70	extern void net_read_registers ();
	71	extern void net_write_registers ();
	72
	73	/* Read a register or registers from the VxWorks target.
	74	REGNO is the register to read, or -1 for all; currently,
	75	it is ignored. FIXME look at regno to improve efficiency. */
	76
	77	void
fba45db2	78	vx_read_register (int regno)
c906108c SS	79	{
	80	char sparc_greg_packet[SPARC_GREG_PLEN];
	81	char sparc_fpreg_packet[SPARC_FPREG_PLEN];
	82	CORE_ADDR sp;
	83
	84	/* Get general-purpose registers. When copying values into
	85	registers [], don't assume that a location in registers []
	86	is properly aligned for the target data type. */
	87
	88	net_read_registers (sparc_greg_packet, SPARC_GREG_PLEN, PTRACE_GETREGS);
	89
	90	/* Now copy the register values into registers[].
	91	Note that this code depends on the ordering of the REGNUMs
	92	as defined in "tm-sparc.h". */
	93
	94	bcopy (&sparc_greg_packet[SPARC_R_G0],
524d7c18 AC	95	&deprecated_registers[REGISTER_BYTE (G0_REGNUM)],
524d7c18 AC	96	32 * SPARC_GREG_SIZE);
c906108c	97	bcopy (&sparc_greg_packet[SPARC_R_Y],
524d7c18	98	&deprecated_registers[REGISTER_BYTE (Y_REGNUM)], 6 * SPARC_GREG_SIZE);
c906108c SS	99
	100	/* Now write the local and in registers to the register window
	101	spill area in the frame. VxWorks does not do this for the
	102	active frame automatically; it greatly simplifies debugging
	103	(FRAME_FIND_SAVED_REGS, in particular, depends on this). */
	104
524d7c18	105	sp = extract_address (&deprecated_registers[REGISTER_BYTE (SP_REGNUM)],
5a595886	106	REGISTER_RAW_SIZE (SP_REGNUM));
524d7c18	107	write_memory (sp, &deprecated_registers[REGISTER_BYTE (L0_REGNUM)],
c906108c SS	108	16 * REGISTER_RAW_SIZE (L0_REGNUM));
	109
	110	/* If the target has floating point registers, fetch them.
	111	Otherwise, zero the floating point register values in
	112	registers[] for good measure, even though we might not
	113	need to. */
	114
	115	if (target_has_fp)
	116	{
	117	net_read_registers (sparc_fpreg_packet, SPARC_FPREG_PLEN,
c5aa993b JM	118	PTRACE_GETFPREGS);
c5aa993b JM	119	bcopy (&sparc_fpreg_packet[SPARC_R_FP0],
524d7c18 AC	120	&deprecated_registers[REGISTER_BYTE (FP0_REGNUM)],
524d7c18 AC	121	32 * SPARC_FPREG_SIZE);
c906108c	122	bcopy (&sparc_fpreg_packet[SPARC_R_FSR],
524d7c18 AC	123	&deprecated_registers[REGISTER_BYTE (FPS_REGNUM)],
524d7c18 AC	124	1 * SPARC_FPREG_SIZE);
c906108c SS	125	}
c906108c SS	126	else
c5aa993b	127	{
524d7c18 AC	128	bzero (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM)],
	129	32 * SPARC_FPREG_SIZE);
	130	bzero (&deprecated_registers[REGISTER_BYTE (FPS_REGNUM)],
	131	1 * SPARC_FPREG_SIZE);
c906108c SS	132	}
	133
	134	/* Mark the register cache valid. */
	135
2b9e5f3f	136	deprecated_registers_fetched ();
c906108c SS	137	}
	138
	139	/* Store a register or registers into the VxWorks target.
	140	REGNO is the register to store, or -1 for all; currently,
	141	it is ignored. FIXME look at regno to improve efficiency. */
	142
	143	void
fba45db2	144	vx_write_register (int regno)
c906108c SS	145	{
	146	char sparc_greg_packet[SPARC_GREG_PLEN];
	147	char sparc_fpreg_packet[SPARC_FPREG_PLEN];
	148	int in_gp_regs;
	149	int in_fp_regs;
	150	CORE_ADDR sp;
	151
	152	/* Store general purpose registers. When copying values from
	153	registers [], don't assume that a location in registers []
	154	is properly aligned for the target data type. */
	155
	156	in_gp_regs = 1;
	157	in_fp_regs = 1;
	158	if (regno >= 0)
	159	{
	160	if ((G0_REGNUM <= regno && regno <= I7_REGNUM)
c5aa993b	161	\|\| (Y_REGNUM <= regno && regno <= NPC_REGNUM))
c906108c SS	162	in_fp_regs = 0;
	163	else
	164	in_gp_regs = 0;
	165	}
	166	if (in_gp_regs)
	167	{
524d7c18	168	bcopy (&deprecated_registers[REGISTER_BYTE (G0_REGNUM)],
c906108c	169	&sparc_greg_packet[SPARC_R_G0], 32 * SPARC_GREG_SIZE);
524d7c18	170	bcopy (&deprecated_registers[REGISTER_BYTE (Y_REGNUM)],
c906108c SS	171	&sparc_greg_packet[SPARC_R_Y], 6 * SPARC_GREG_SIZE);
	172
	173	net_write_registers (sparc_greg_packet, SPARC_GREG_PLEN, PTRACE_SETREGS);
	174
	175	/* If this is a local or in register, or we're storing all
	176	registers, update the register window spill area. */
	177
	178	if (regno < 0 \|\| (L0_REGNUM <= regno && regno <= I7_REGNUM))
c5aa993b	179	{
524d7c18	180	sp = extract_address (&deprecated_registers[REGISTER_BYTE (SP_REGNUM)],
5a595886	181	REGISTER_RAW_SIZE (SP_REGNUM));
524d7c18	182	write_memory (sp, &deprecated_registers[REGISTER_BYTE (L0_REGNUM)],
c906108c SS	183	16 * REGISTER_RAW_SIZE (L0_REGNUM));
	184	}
	185	}
	186
	187	/* Store floating point registers if the target has them. */
	188
	189	if (in_fp_regs && target_has_fp)
	190	{
524d7c18	191	bcopy (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM)],
c906108c	192	&sparc_fpreg_packet[SPARC_R_FP0], 32 * SPARC_FPREG_SIZE);
524d7c18	193	bcopy (&deprecated_registers[REGISTER_BYTE (FPS_REGNUM)],
c906108c SS	194	&sparc_fpreg_packet[SPARC_R_FSR], 1 * SPARC_FPREG_SIZE);
	195
	196	net_write_registers (sparc_fpreg_packet, SPARC_FPREG_PLEN,
c5aa993b	197	PTRACE_SETFPREGS);
c906108c SS	198	}
c906108c SS	199	}