[thirdparty/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 "wait.h"
#include "target.h"
#include "gdbcore.h"
#include "command.h"
#include "symtab.h"
#include "symfile.h"		/* for struct complaint */

#include "gdb_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],
	 &registers[REGISTER_BYTE (G0_REGNUM)], 32 * SPARC_GREG_SIZE);
  bcopy (&sparc_greg_packet[SPARC_R_Y],
	 &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 (&registers[REGISTER_BYTE (SP_REGNUM)],
			REGISTER_RAW_SIZE (CORE_ADDR));
  write_memory (sp, &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],
	     &registers[REGISTER_BYTE (FP0_REGNUM)], 32 * SPARC_FPREG_SIZE);
      bcopy (&sparc_fpreg_packet[SPARC_R_FSR],
	     &registers[REGISTER_BYTE (FPS_REGNUM)], 1 * SPARC_FPREG_SIZE);
    }
  else
    {
      bzero (&registers[REGISTER_BYTE (FP0_REGNUM)], 32 * SPARC_FPREG_SIZE);
      bzero (&registers[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 (&registers[REGISTER_BYTE (G0_REGNUM)],
	     &sparc_greg_packet[SPARC_R_G0], 32 * SPARC_GREG_SIZE);
      bcopy (&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 (&registers[REGISTER_BYTE (SP_REGNUM)],
				REGISTER_RAW_SIZE (CORE_ADDR));
	  write_memory (sp, &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 (&registers[REGISTER_BYTE (FP0_REGNUM)],
	     &sparc_fpreg_packet[SPARC_R_FP0], 32 * SPARC_FPREG_SIZE);
      bcopy (&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"
	28	#include "inferior.h"
	29	#include "wait.h"
	30	#include "target.h"
	31	#include "gdbcore.h"
	32	#include "command.h"
	33	#include "symtab.h"
	34	#include "symfile.h" /* for struct complaint */
	35
	36	#include "gdb_string.h"
	37	#include <errno.h>
	38	#include <signal.h>
	39	#include <fcntl.h>
	40	#include <sys/types.h>
	41	#include <sys/time.h>
	42	#include <sys/socket.h>
	43
c5aa993b	44	#ifdef _AIX /* IBM claims "void malloc()" not char */
c906108c SS	45	#define malloc bogon_malloc
	46	#endif
	47
	48	#include <rpc/rpc.h>
	49	#include <sys/time.h> /* UTek's <rpc/rpc.h> doesn't #incl this */
	50	#include <netdb.h>
	51	#include "vx-share/ptrace.h"
	52	#include "vx-share/xdr_ptrace.h"
	53	#include "vx-share/xdr_ld.h"
	54	#include "vx-share/xdr_rdb.h"
	55	#include "vx-share/dbgRpcLib.h"
	56
	57	/* get rid of value.h if possible */
	58	#include <value.h>
	59	#include <symtab.h>
	60
	61	/* Flag set if target has fpu */
	62
	63	extern int target_has_fp;
	64
	65	/* sparc floating point format descriptor, from "sparc-tdep.c." */
	66
	67	extern struct ext_format ext_format_sparc;
	68
	69	/* Generic register read/write routines in remote-vx.c. */
	70
	71	extern void net_read_registers ();
	72	extern void net_write_registers ();
	73
	74	/* Read a register or registers from the VxWorks target.
	75	REGNO is the register to read, or -1 for all; currently,
	76	it is ignored. FIXME look at regno to improve efficiency. */
	77
	78	void
	79	vx_read_register (regno)
	80	int regno;
	81	{
	82	char sparc_greg_packet[SPARC_GREG_PLEN];
	83	char sparc_fpreg_packet[SPARC_FPREG_PLEN];
	84	CORE_ADDR sp;
	85
	86	/* Get general-purpose registers. When copying values into
	87	registers [], don't assume that a location in registers []
	88	is properly aligned for the target data type. */
	89
	90	net_read_registers (sparc_greg_packet, SPARC_GREG_PLEN, PTRACE_GETREGS);
	91
	92	/* Now copy the register values into registers[].
	93	Note that this code depends on the ordering of the REGNUMs
	94	as defined in "tm-sparc.h". */
	95
	96	bcopy (&sparc_greg_packet[SPARC_R_G0],
	97	&registers[REGISTER_BYTE (G0_REGNUM)], 32 * SPARC_GREG_SIZE);
	98	bcopy (&sparc_greg_packet[SPARC_R_Y],
	99	&registers[REGISTER_BYTE (Y_REGNUM)], 6 * SPARC_GREG_SIZE);
	100
	101	/* Now write the local and in registers to the register window
	102	spill area in the frame. VxWorks does not do this for the
	103	active frame automatically; it greatly simplifies debugging
	104	(FRAME_FIND_SAVED_REGS, in particular, depends on this). */
	105
c5aa993b JM	106	sp = extract_address (&registers[REGISTER_BYTE (SP_REGNUM)],
c5aa993b JM	107	REGISTER_RAW_SIZE (CORE_ADDR));
c906108c SS	108	write_memory (sp, &registers[REGISTER_BYTE (L0_REGNUM)],
	109	16 * REGISTER_RAW_SIZE (L0_REGNUM));
	110
	111	/* If the target has floating point registers, fetch them.
	112	Otherwise, zero the floating point register values in
	113	registers[] for good measure, even though we might not
	114	need to. */
	115
	116	if (target_has_fp)
	117	{
	118	net_read_registers (sparc_fpreg_packet, SPARC_FPREG_PLEN,
c5aa993b JM	119	PTRACE_GETFPREGS);
	120	bcopy (&sparc_fpreg_packet[SPARC_R_FP0],
	121	&registers[REGISTER_BYTE (FP0_REGNUM)], 32 * SPARC_FPREG_SIZE);
c906108c SS	122	bcopy (&sparc_fpreg_packet[SPARC_R_FSR],
	123	&registers[REGISTER_BYTE (FPS_REGNUM)], 1 * SPARC_FPREG_SIZE);
	124	}
	125	else
c5aa993b	126	{
c906108c SS	127	bzero (&registers[REGISTER_BYTE (FP0_REGNUM)], 32 * SPARC_FPREG_SIZE);
	128	bzero (&registers[REGISTER_BYTE (FPS_REGNUM)], 1 * SPARC_FPREG_SIZE);
	129	}
	130
	131	/* Mark the register cache valid. */
	132
	133	registers_fetched ();
	134	}
	135
	136	/* Store a register or registers into the VxWorks target.
	137	REGNO is the register to store, or -1 for all; currently,
	138	it is ignored. FIXME look at regno to improve efficiency. */
	139
	140	void
	141	vx_write_register (regno)
	142	int regno;
	143	{
	144	char sparc_greg_packet[SPARC_GREG_PLEN];
	145	char sparc_fpreg_packet[SPARC_FPREG_PLEN];
	146	int in_gp_regs;
	147	int in_fp_regs;
	148	CORE_ADDR sp;
	149
	150	/* Store general purpose registers. When copying values from
	151	registers [], don't assume that a location in registers []
	152	is properly aligned for the target data type. */
	153
	154	in_gp_regs = 1;
	155	in_fp_regs = 1;
	156	if (regno >= 0)
	157	{
	158	if ((G0_REGNUM <= regno && regno <= I7_REGNUM)
c5aa993b	159	\|\| (Y_REGNUM <= regno && regno <= NPC_REGNUM))
c906108c SS	160	in_fp_regs = 0;
	161	else
	162	in_gp_regs = 0;
	163	}
	164	if (in_gp_regs)
	165	{
	166	bcopy (&registers[REGISTER_BYTE (G0_REGNUM)],
	167	&sparc_greg_packet[SPARC_R_G0], 32 * SPARC_GREG_SIZE);
	168	bcopy (&registers[REGISTER_BYTE (Y_REGNUM)],
	169	&sparc_greg_packet[SPARC_R_Y], 6 * SPARC_GREG_SIZE);
	170
	171	net_write_registers (sparc_greg_packet, SPARC_GREG_PLEN, PTRACE_SETREGS);
	172
	173	/* If this is a local or in register, or we're storing all
	174	registers, update the register window spill area. */
	175
	176	if (regno < 0 \|\| (L0_REGNUM <= regno && regno <= I7_REGNUM))
c5aa993b JM	177	{
	178	sp = extract_address (&registers[REGISTER_BYTE (SP_REGNUM)],
	179	REGISTER_RAW_SIZE (CORE_ADDR));
c906108c SS	180	write_memory (sp, &registers[REGISTER_BYTE (L0_REGNUM)],
	181	16 * REGISTER_RAW_SIZE (L0_REGNUM));
	182	}
	183	}
	184
	185	/* Store floating point registers if the target has them. */
	186
	187	if (in_fp_regs && target_has_fp)
	188	{
c5aa993b	189	bcopy (&registers[REGISTER_BYTE (FP0_REGNUM)],
c906108c	190	&sparc_fpreg_packet[SPARC_R_FP0], 32 * SPARC_FPREG_SIZE);
c5aa993b	191	bcopy (&registers[REGISTER_BYTE (FPS_REGNUM)],
c906108c SS	192	&sparc_fpreg_packet[SPARC_R_FSR], 1 * SPARC_FPREG_SIZE);
	193
	194	net_write_registers (sparc_fpreg_packet, SPARC_FPREG_PLEN,
c5aa993b	195	PTRACE_SETFPREGS);
c906108c SS	196	}
c906108c SS	197	}