Initial creation of sourceware repository

1 files changed, 0 insertions, 2074 deletions

diff --git a/gdb/sparc-tdep.c b/gdb/sparc-tdep.c
deleted file mode 100644
index 2ea0c1b..0000000
--- a/gdb/sparc-tdep.c
+++ /dev/null
@@ -1,2074 +0,0 @@
-/* Target-dependent code for the SPARC for GDB, the GNU debugger.
-   Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997
-   Free Software Foundation, Inc.
-
-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.  */
-
-/* ??? Support for calling functions from gdb in sparc64 is unfinished.  */
-
-#include "defs.h"
-#include "frame.h"
-#include "inferior.h"
-#include "obstack.h"
-#include "target.h"
-#include "value.h"
-#include "bfd.h"
-#include "gdb_string.h"
-
-#ifdef	USE_PROC_FS
-#include <sys/procfs.h>
-#endif
-
-#include "gdbcore.h"
-
-#if defined(TARGET_SPARCLET) || defined(TARGET_SPARCLITE)
-#define SPARC_HAS_FPU 0
-#else
-#define SPARC_HAS_FPU 1
-#endif
-
-#ifdef GDB_TARGET_IS_SPARC64
-#define FP_REGISTER_BYTES (64 * 4)
-#else
-#define FP_REGISTER_BYTES (32 * 4)
-#endif
-
-/* If not defined, assume 32 bit sparc.  */
-#ifndef FP_MAX_REGNUM
-#define FP_MAX_REGNUM (FP0_REGNUM + 32)
-#endif
-
-#define SPARC_INTREG_SIZE (REGISTER_RAW_SIZE (G0_REGNUM))
-
-/* From infrun.c */
-extern int stop_after_trap;
-
-/* We don't store all registers immediately when requested, since they
-   get sent over in large chunks anyway.  Instead, we accumulate most
-   of the changes and send them over once.  "deferred_stores" keeps
-   track of which sets of registers we have locally-changed copies of,
-   so we only need send the groups that have changed.  */
-
-int deferred_stores = 0;	/* Cumulates stores we want to do eventually. */
-
-
-/* Fetch a single instruction.  Even on bi-endian machines
-   such as sparc86x, instructions are always big-endian.  */
-
-static unsigned long
-fetch_instruction (pc)
-     CORE_ADDR pc;
-{
-  unsigned long retval;
-  int i;
-  unsigned char buf[4];
-
-  read_memory (pc, buf, sizeof (buf));
-
-  /* Start at the most significant end of the integer, and work towards
-     the least significant.  */
-  retval = 0;
-  for (i = 0; i < sizeof (buf); ++i)
-    retval = (retval << 8) | buf[i];
-  return retval;
-}
-
-
-/* Branches with prediction are treated like their non-predicting cousins.  */
-/* FIXME: What about floating point branches?  */
-
-/* Macros to extract fields from sparc instructions.  */
-#define X_OP(i) (((i) >> 30) & 0x3)
-#define X_RD(i) (((i) >> 25) & 0x1f)
-#define X_A(i) (((i) >> 29) & 1)
-#define X_COND(i) (((i) >> 25) & 0xf)
-#define X_OP2(i) (((i) >> 22) & 0x7)
-#define X_IMM22(i) ((i) & 0x3fffff)
-#define X_OP3(i) (((i) >> 19) & 0x3f)
-#define X_RS1(i) (((i) >> 14) & 0x1f)
-#define X_I(i) (((i) >> 13) & 1)
-#define X_IMM13(i) ((i) & 0x1fff)
-/* Sign extension macros.  */
-#define X_SIMM13(i) ((X_IMM13 (i) ^ 0x1000) - 0x1000)
-#define X_DISP22(i) ((X_IMM22 (i) ^ 0x200000) - 0x200000)
-#define X_CC(i) (((i) >> 20) & 3)
-#define X_P(i) (((i) >> 19) & 1)
-#define X_DISP19(i) ((((i) & 0x7ffff) ^ 0x40000) - 0x40000)
-#define X_RCOND(i) (((i) >> 25) & 7)
-#define X_DISP16(i) ((((((i) >> 6) && 0xc000) | ((i) & 0x3fff)) ^ 0x8000) - 0x8000)
-#define X_FCN(i) (((i) >> 25) & 31)
-
-typedef enum
-{
-  Error, not_branch, bicc, bicca, ba, baa, ticc, ta,
-#ifdef GDB_TARGET_IS_SPARC64
-  done_retry
-#endif
-} branch_type;
-
-/* Simulate single-step ptrace call for sun4.  Code written by Gary
-   Beihl (beihl@mcc.com).  */
-
-/* npc4 and next_pc describe the situation at the time that the
-   step-breakpoint was set, not necessary the current value of NPC_REGNUM.  */
-static CORE_ADDR next_pc, npc4, target;
-static int brknpc4, brktrg;
-typedef char binsn_quantum[BREAKPOINT_MAX];
-static binsn_quantum break_mem[3];
-
-/* Non-zero if we just simulated a single-step ptrace call.  This is
-   needed because we cannot remove the breakpoints in the inferior
-   process until after the `wait' in `wait_for_inferior'.  Used for
-   sun4. */
-
-int one_stepped;
-
-static branch_type isbranch PARAMS ((long, CORE_ADDR, CORE_ADDR *));
-
-/* single_step() is called just before we want to resume the inferior,
-   if we want to single-step it but there is no hardware or kernel single-step
-   support (as on all SPARCs).  We find all the possible targets of the
-   coming instruction and breakpoint them.
-
-   single_step is also called just after the inferior stops.  If we had
-   set up a simulated single-step, we undo our damage.  */
-
-void
-single_step (ignore)
-     enum target_signal ignore; /* pid, but we don't need it */
-{
-  branch_type br;
-  CORE_ADDR pc;
-  long pc_instruction;
-
-  if (!one_stepped)
-    {
-      /* Always set breakpoint for NPC.  */
-      next_pc = read_register (NPC_REGNUM);
-      npc4 = next_pc + 4; /* branch not taken */
-
-      target_insert_breakpoint (next_pc, break_mem[0]);
-      /* printf_unfiltered ("set break at %x\n",next_pc); */
-
-      pc = read_register (PC_REGNUM);
-      pc_instruction = fetch_instruction (pc);
-      br = isbranch (pc_instruction, pc, &target);
-      brknpc4 = brktrg = 0;
-
-      if (br == bicca)
-	{
-	  /* Conditional annulled branch will either end up at
-	     npc (if taken) or at npc+4 (if not taken).
-	     Trap npc+4.  */
-	  brknpc4 = 1;
-	  target_insert_breakpoint (npc4, break_mem[1]);
-	}
-      else if (br == baa && target != next_pc)
-	{
-	  /* Unconditional annulled branch will always end up at
-	     the target.  */
-	  brktrg = 1;
-	  target_insert_breakpoint (target, break_mem[2]);
-	}
-#ifdef GDB_TARGET_IS_SPARC64
-      else if (br == done_retry)
-	{
-	  brktrg = 1;
-	  target_insert_breakpoint (target, break_mem[2]);
-	}
-#endif
-
-      /* We are ready to let it go */
-      one_stepped = 1;
-      return;
-    }
-  else
-    {
-      /* Remove breakpoints */
-      target_remove_breakpoint (next_pc, break_mem[0]);
-
-      if (brknpc4)
-	target_remove_breakpoint (npc4, break_mem[1]);
-
-      if (brktrg)
-	target_remove_breakpoint (target, break_mem[2]);
-
-      one_stepped = 0;
-    }
-}
-
-/* Call this for each newly created frame.  For SPARC, we need to calculate
-   the bottom of the frame, and do some extra work if the prologue
-   has been generated via the -mflat option to GCC.  In particular,
-   we need to know where the previous fp and the pc have been stashed,
-   since their exact position within the frame may vary.  */
-
-void
-sparc_init_extra_frame_info (fromleaf, fi)
-     int fromleaf;
-     struct frame_info *fi;
-{
-  char *name;
-  CORE_ADDR addr;
-  int insn;
-
-  fi->bottom =
-    (fi->next ?
-     (fi->frame == fi->next->frame ? fi->next->bottom : fi->next->frame) :
-     read_sp ());
-
-  /* If fi->next is NULL, then we already set ->frame by passing read_fp()
-     to create_new_frame.  */
-  if (fi->next)
-    {
-      char buf[MAX_REGISTER_RAW_SIZE];
-
-      /* Compute ->frame as if not flat.  If it is flat, we'll change
-	 it later.  */
-      if (fi->next->next != NULL
-	  && (fi->next->next->signal_handler_caller
-	      || frame_in_dummy (fi->next->next))
-	  && frameless_look_for_prologue (fi->next))
-	{
-	  /* A frameless function interrupted by a signal did not change
-	     the frame pointer, fix up frame pointer accordingly.  */
-	  fi->frame = FRAME_FP (fi->next);
-	  fi->bottom = fi->next->bottom;
-	}
-      else
-	{
-	  /* Should we adjust for stack bias here? */
-	  get_saved_register (buf, 0, 0, fi, FP_REGNUM, 0);
-	  fi->frame = extract_address (buf, REGISTER_RAW_SIZE (FP_REGNUM));
-#ifdef GDB_TARGET_IS_SPARC64
-	  if (fi->frame & 1)
-	    fi->frame += 2047;
-#endif
-	  
-	}
-    }
-
-  /* Decide whether this is a function with a ``flat register window''
-     frame.  For such functions, the frame pointer is actually in %i7.  */
-  fi->flat = 0;
-  if (find_pc_partial_function (fi->pc, &name, &addr, NULL))
-    {
-      /* See if the function starts with an add (which will be of a
-	 negative number if a flat frame) to the sp.  FIXME: Does not
-	 handle large frames which will need more than one instruction
-	 to adjust the sp.  */
-      insn = fetch_instruction (addr);
-      if (X_OP (insn) == 2 && X_RD (insn) == 14 && X_OP3 (insn) == 0
-	  && X_I (insn) && X_SIMM13 (insn) < 0)
-	{
-	  int offset = X_SIMM13 (insn);
-
-	  /* Then look for a save of %i7 into the frame.  */
-	  insn = fetch_instruction (addr + 4);
-	  if (X_OP (insn) == 3
-	      && X_RD (insn) == 31
-	      && X_OP3 (insn) == 4
-	      && X_RS1 (insn) == 14)
-	    {
-	      char buf[MAX_REGISTER_RAW_SIZE];
-
-	      /* We definitely have a flat frame now.  */
-	      fi->flat = 1;
-
-	      fi->sp_offset = offset;
-
-	      /* Overwrite the frame's address with the value in %i7.  */
-	      get_saved_register (buf, 0, 0, fi, I7_REGNUM, 0);
-	      fi->frame = extract_address (buf, REGISTER_RAW_SIZE (I7_REGNUM));
-#ifdef GDB_TARGET_IS_SPARC64
-	      if (fi->frame & 1)
-		fi->frame += 2047;
-#endif
-	      /* Record where the fp got saved.  */
-	      fi->fp_addr = fi->frame + fi->sp_offset + X_SIMM13 (insn);
-
-	      /* Also try to collect where the pc got saved to.  */
-	      fi->pc_addr = 0;
-	      insn = fetch_instruction (addr + 12);
-	      if (X_OP (insn) == 3
-		  && X_RD (insn) == 15
-		  && X_OP3 (insn) == 4
-		  && X_RS1 (insn) == 14)
-		fi->pc_addr = fi->frame + fi->sp_offset + X_SIMM13 (insn);
-	    }
-	}
-    }
-  if (fi->next && fi->frame == 0)
-    {
-      /* Kludge to cause init_prev_frame_info to destroy the new frame.  */
-      fi->frame = fi->next->frame;
-      fi->pc = fi->next->pc;
-    }
-}
-
-CORE_ADDR
-sparc_frame_chain (frame)
-     struct frame_info *frame;
-{
-  /* Value that will cause FRAME_CHAIN_VALID to not worry about the chain
-     value.  If it realy is zero, we detect it later in
-     sparc_init_prev_frame.  */
-  return (CORE_ADDR)1;
-}
-
-CORE_ADDR
-sparc_extract_struct_value_address (regbuf)
-     char regbuf[REGISTER_BYTES];
-{
-#ifdef GDB_TARGET_IS_SPARC64
-  return extract_address (regbuf + REGISTER_BYTE (O0_REGNUM),
-			  REGISTER_RAW_SIZE (O0_REGNUM));
-#else
-  CORE_ADDR sp = extract_address (&regbuf [REGISTER_BYTE (SP_REGNUM)],
-				  REGISTER_RAW_SIZE (SP_REGNUM));
-  return read_memory_integer (sp + (16 * SPARC_INTREG_SIZE), 
-	       		      TARGET_PTR_BIT / TARGET_CHAR_BIT);
-#endif
-}
-
-/* Find the pc saved in frame FRAME.  */
-
-CORE_ADDR
-sparc_frame_saved_pc (frame)
-     struct frame_info *frame;
-{
-  char buf[MAX_REGISTER_RAW_SIZE];
-  CORE_ADDR addr;
-
-  if (frame->signal_handler_caller)
-    {
-      /* This is the signal trampoline frame.
-	 Get the saved PC from the sigcontext structure.  */
-
-#ifndef SIGCONTEXT_PC_OFFSET
-#define SIGCONTEXT_PC_OFFSET 12
-#endif
-
-      CORE_ADDR sigcontext_addr;
-      char scbuf[TARGET_PTR_BIT / HOST_CHAR_BIT];
-      int saved_pc_offset = SIGCONTEXT_PC_OFFSET;
-      char *name = NULL;
-
-      /* Solaris2 ucbsigvechandler passes a pointer to a sigcontext
-	 as the third parameter.  The offset to the saved pc is 12.  */
-      find_pc_partial_function (frame->pc, &name,
-				(CORE_ADDR *)NULL,(CORE_ADDR *)NULL);
-      if (name && STREQ (name, "ucbsigvechandler"))
-	saved_pc_offset = 12;
-
-      /* The sigcontext address is contained in register O2.  */
-      get_saved_register (buf, (int *)NULL, (CORE_ADDR *)NULL,
-			  frame, O0_REGNUM + 2, (enum lval_type *)NULL);
-      sigcontext_addr = extract_address (buf, REGISTER_RAW_SIZE (O0_REGNUM + 2));
-
-      /* Don't cause a memory_error when accessing sigcontext in case the
-	 stack layout has changed or the stack is corrupt.  */
-      target_read_memory (sigcontext_addr + saved_pc_offset,
-			  scbuf, sizeof (scbuf));
-      return extract_address (scbuf, sizeof (scbuf));
-    }
-  else if (frame->next != NULL
-	   && (frame->next->signal_handler_caller
-	       || frame_in_dummy (frame->next))
-	   && frameless_look_for_prologue (frame))
-    {
-      /* A frameless function interrupted by a signal did not save
-	 the PC, it is still in %o7.  */
-      get_saved_register (buf, (int *)NULL, (CORE_ADDR *)NULL,
-			  frame, O7_REGNUM, (enum lval_type *)NULL);
-      return PC_ADJUST (extract_address (buf, SPARC_INTREG_SIZE));
-    }
-  if (frame->flat)
-    addr = frame->pc_addr;
-  else
-    addr = frame->bottom + FRAME_SAVED_I0 +
-      SPARC_INTREG_SIZE * (I7_REGNUM - I0_REGNUM);
-
-  if (addr == 0)
-    /* A flat frame leaf function might not save the PC anywhere,
-       just leave it in %o7.  */
-    return PC_ADJUST (read_register (O7_REGNUM));
-
-  read_memory (addr, buf, SPARC_INTREG_SIZE);
-  return PC_ADJUST (extract_address (buf, SPARC_INTREG_SIZE));
-}
-
-/* Since an individual frame in the frame cache is defined by two
-   arguments (a frame pointer and a stack pointer), we need two
-   arguments to get info for an arbitrary stack frame.  This routine
-   takes two arguments and makes the cached frames look as if these
-   two arguments defined a frame on the cache.  This allows the rest
-   of info frame to extract the important arguments without
-   difficulty.  */
-
-struct frame_info *
-setup_arbitrary_frame (argc, argv)
-     int argc;
-     CORE_ADDR *argv;
-{
-  struct frame_info *frame;
-
-  if (argc != 2)
-    error ("Sparc frame specifications require two arguments: fp and sp");
-
-  frame = create_new_frame (argv[0], 0);
-
-  if (!frame)
-    fatal ("internal: create_new_frame returned invalid frame");
-  
-  frame->bottom = argv[1];
-  frame->pc = FRAME_SAVED_PC (frame);
-  return frame;
-}
-
-/* Given a pc value, skip it forward past the function prologue by
-   disassembling instructions that appear to be a prologue.
-
-   If FRAMELESS_P is set, we are only testing to see if the function
-   is frameless.  This allows a quicker answer.
-
-   This routine should be more specific in its actions; making sure
-   that it uses the same register in the initial prologue section.  */
-
-static CORE_ADDR examine_prologue PARAMS ((CORE_ADDR, int, struct frame_info *,
-					   struct frame_saved_regs *));
-
-static CORE_ADDR 
-examine_prologue (start_pc, frameless_p, fi, saved_regs)
-     CORE_ADDR start_pc;
-     int frameless_p;
-     struct frame_info *fi;
-     struct frame_saved_regs *saved_regs;
-{
-  int insn;
-  int dest = -1;
-  CORE_ADDR pc = start_pc;
-  int is_flat = 0;
-
-  insn = fetch_instruction (pc);
-
-  /* Recognize the `sethi' insn and record its destination.  */
-  if (X_OP (insn) == 0 && X_OP2 (insn) == 4)
-    {
-      dest = X_RD (insn);
-      pc += 4;
-      insn = fetch_instruction (pc);
-    }
-
-  /* Recognize an add immediate value to register to either %g1 or
-     the destination register recorded above.  Actually, this might
-     well recognize several different arithmetic operations.
-     It doesn't check that rs1 == rd because in theory "sub %g0, 5, %g1"
-     followed by "save %sp, %g1, %sp" is a valid prologue (Not that
-     I imagine any compiler really does that, however).  */
-  if (X_OP (insn) == 2
-      && X_I (insn)
-      && (X_RD (insn) == 1 || X_RD (insn) == dest))
-    {
-      pc += 4;
-      insn = fetch_instruction (pc);
-    }
-
-  /* Recognize any SAVE insn.  */
-  if (X_OP (insn) == 2 && X_OP3 (insn) == 60)
-    {
-      pc += 4;
-      if (frameless_p)			/* If the save is all we care about, */
-	return pc;			/* return before doing more work */
-      insn = fetch_instruction (pc);
-    }
-  /* Recognize add to %sp.  */
-  else if (X_OP (insn) == 2 && X_RD (insn) == 14 && X_OP3 (insn) == 0)
-    {
-      pc += 4;
-      if (frameless_p)			/* If the add is all we care about, */
-	return pc;			/* return before doing more work */
-      is_flat = 1;
-      insn = fetch_instruction (pc);
-      /* Recognize store of frame pointer (i7).  */
-      if (X_OP (insn) == 3
-	  && X_RD (insn) == 31
-	  && X_OP3 (insn) == 4
-	  && X_RS1 (insn) == 14)
-	{
-	  pc += 4;
-	  insn = fetch_instruction (pc);
-
-	  /* Recognize sub %sp, <anything>, %i7.  */
-	  if (X_OP (insn) ==  2
-	      && X_OP3 (insn) == 4
-	      && X_RS1 (insn) == 14
-	      && X_RD (insn) == 31)
-	    {
-	      pc += 4;
-	      insn = fetch_instruction (pc);
-	    }
-	  else
-	    return pc;
-	}
-      else
-	return pc;
-    }
-  else
-    /* Without a save or add instruction, it's not a prologue.  */
-    return start_pc;
-
-  while (1)
-    {
-      /* Recognize stores into the frame from the input registers.
-	 This recognizes all non alternate stores of input register,
-	 into a location offset from the frame pointer.  */
-      if ((X_OP (insn) == 3
-	   && (X_OP3 (insn) & 0x3c) == 4 /* Store, non-alternate.  */
-	   && (X_RD (insn) & 0x18) == 0x18 /* Input register.  */
-	   && X_I (insn)		/* Immediate mode.  */
-	   && X_RS1 (insn) == 30	/* Off of frame pointer.  */
-	   /* Into reserved stack space.  */
-	   && X_SIMM13 (insn) >= 0x44
-	   && X_SIMM13 (insn) < 0x5b))
-	;
-      else if (is_flat
-	       && X_OP (insn) == 3
-	       && X_OP3 (insn) == 4
-	       && X_RS1 (insn) == 14
-	       )
-	{
-	  if (saved_regs && X_I (insn))
-	    saved_regs->regs[X_RD (insn)] =
-	      fi->frame + fi->sp_offset + X_SIMM13 (insn);
-	}
-      else
-	break;
-      pc += 4;
-      insn = fetch_instruction (pc);
-    }
-
-  return pc;
-}
-
-CORE_ADDR 
-skip_prologue (start_pc, frameless_p)
-     CORE_ADDR start_pc;
-     int frameless_p;
-{
-  return examine_prologue (start_pc, frameless_p, NULL, NULL);
-}
-
-/* Check instruction at ADDR to see if it is a branch.
-   All non-annulled instructions will go to NPC or will trap.
-   Set *TARGET if we find a candidate branch; set to zero if not.
-
-   This isn't static as it's used by remote-sa.sparc.c.  */
-
-static branch_type
-isbranch (instruction, addr, target)
-     long instruction;
-     CORE_ADDR addr, *target;
-{
-  branch_type val = not_branch;
-  long int offset = 0;		/* Must be signed for sign-extend.  */
-
-  *target = 0;
-
-  if (X_OP (instruction) == 0
-      && (X_OP2 (instruction) == 2
-	  || X_OP2 (instruction) == 6
-	  || X_OP2 (instruction) == 1
-	  || X_OP2 (instruction) == 3
-	  || X_OP2 (instruction) == 5
-#ifndef GDB_TARGET_IS_SPARC64
-	  || X_OP2 (instruction) == 7
-#endif
-	  ))
-    {
-      if (X_COND (instruction) == 8)
-	val = X_A (instruction) ? baa : ba;
-      else
-	val = X_A (instruction) ? bicca : bicc;
-      switch (X_OP2 (instruction))
-	{
-	case 2:
-	case 6:
-#ifndef GDB_TARGET_IS_SPARC64
-	case 7:
-#endif
-	  offset = 4 * X_DISP22 (instruction);
-	  break;
-	case 1:
-	case 5:
-	  offset = 4 * X_DISP19 (instruction);
-	  break;
-	case 3:
-	  offset = 4 * X_DISP16 (instruction);
-	  break;
-	}
-      *target = addr + offset;
-    }
-#ifdef GDB_TARGET_IS_SPARC64
-  else if (X_OP (instruction) == 2
-	   && X_OP3 (instruction) == 62)
-    {
-      if (X_FCN (instruction) == 0)
-	{
-	  /* done */
-	  *target = read_register (TNPC_REGNUM);
-	  val = done_retry;
-	}
-      else if (X_FCN (instruction) == 1)
-	{
-	  /* retry */
-	  *target = read_register (TPC_REGNUM);
-	  val = done_retry;
-	}
-    }
-#endif
-
-  return val;
-}
-
-/* Find register number REGNUM relative to FRAME and put its
-   (raw) contents in *RAW_BUFFER.  Set *OPTIMIZED if the variable
-   was optimized out (and thus can't be fetched).  If the variable
-   was fetched from memory, set *ADDRP to where it was fetched from,
-   otherwise it was fetched from a register.
-
-   The argument RAW_BUFFER must point to aligned memory.  */
-
-void
-get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
-     char *raw_buffer;
-     int *optimized;
-     CORE_ADDR *addrp;
-     struct frame_info *frame;
-     int regnum;
-     enum lval_type *lval;
-{
-  struct frame_info *frame1;
-  CORE_ADDR addr;
-
-  if (!target_has_registers)
-    error ("No registers.");
-
-  if (optimized)
-    *optimized = 0;
-
-  addr = 0;
-
-  /* FIXME This code extracted from infcmd.c; should put elsewhere! */
-  if (frame == NULL)
-    {
-      /* error ("No selected frame."); */
-      if (!target_has_registers)
-        error ("The program has no registers now.");
-      if (selected_frame == NULL) 
-        error ("No selected frame.");
-      /* Try to use selected frame */
-      frame = get_prev_frame (selected_frame);  
-      if (frame == 0)
-        error ("Cmd not meaningful in the outermost frame."); 
-    }
-
-
-  frame1 = frame->next;
-
-  /* Get saved PC from the frame info if not in innermost frame.  */
-  if (regnum == PC_REGNUM && frame1 != NULL)
-    {
-      if (lval != NULL)
-	*lval = not_lval;
-      if (raw_buffer != NULL)
-	{
-	  /* Put it back in target format.  */
-	  store_address (raw_buffer, REGISTER_RAW_SIZE (regnum), frame->pc);
-	}
-      if (addrp != NULL)
-	*addrp = 0;
-      return;
-    }
-
-  while (frame1 != NULL)
-    {
-      if (frame1->pc >= (frame1->bottom ? frame1->bottom :
-			 read_sp ())
-	  && frame1->pc <= FRAME_FP (frame1))
-	{
-	  /* Dummy frame.  All but the window regs are in there somewhere.
-	     The window registers are saved on the stack, just like in a
-	     normal frame.  */
-	  if (regnum >= G1_REGNUM && regnum < G1_REGNUM + 7)
-	    addr = frame1->frame + (regnum - G0_REGNUM) * SPARC_INTREG_SIZE
-	      - (FP_REGISTER_BYTES + 8 * SPARC_INTREG_SIZE);
-	  else if (regnum >= I0_REGNUM && regnum < I0_REGNUM + 8)
-	    addr = (frame1->prev->bottom
-		    + (regnum - I0_REGNUM) * SPARC_INTREG_SIZE
-		    + FRAME_SAVED_I0);
-	  else if (regnum >= L0_REGNUM && regnum < L0_REGNUM + 8)
-	    addr = (frame1->prev->bottom
-		    + (regnum - L0_REGNUM) * SPARC_INTREG_SIZE
-		    + FRAME_SAVED_L0);
-	  else if (regnum >= O0_REGNUM && regnum < O0_REGNUM + 8)
-	    addr = frame1->frame + (regnum - O0_REGNUM) * SPARC_INTREG_SIZE
-	      - (FP_REGISTER_BYTES + 16 * SPARC_INTREG_SIZE);
-#ifdef FP0_REGNUM
-	  else if (regnum >= FP0_REGNUM && regnum < FP0_REGNUM + 32)
-	    addr = frame1->frame + (regnum - FP0_REGNUM) * 4
-	      - (FP_REGISTER_BYTES);
-#ifdef GDB_TARGET_IS_SPARC64
-	  else if (regnum >= FP0_REGNUM + 32 && regnum < FP_MAX_REGNUM)
-	    addr = frame1->frame + 32 * 4 + (regnum - FP0_REGNUM - 32) * 8
-	      - (FP_REGISTER_BYTES);
-#endif
-#endif /* FP0_REGNUM */
-	  else if (regnum >= Y_REGNUM && regnum < NUM_REGS)
-	    addr = frame1->frame + (regnum - Y_REGNUM) * SPARC_INTREG_SIZE
-	      - (FP_REGISTER_BYTES + 24 * SPARC_INTREG_SIZE);
-	}
-      else if (frame1->flat)
-	{
-
-	  if (regnum == RP_REGNUM)
-	    addr = frame1->pc_addr;
-	  else if (regnum == I7_REGNUM)
-	    addr = frame1->fp_addr;
-	  else
-	    {
-	      CORE_ADDR func_start;
-	      struct frame_saved_regs regs;
-	      memset (&regs, 0, sizeof (regs));
-
-	      find_pc_partial_function (frame1->pc, NULL, &func_start, NULL);
-	      examine_prologue (func_start, 0, frame1, &regs);
-	      addr = regs.regs[regnum];
-	    }
-	}
-      else
-	{
-	  /* Normal frame.  Local and In registers are saved on stack.  */
-	  if (regnum >= I0_REGNUM && regnum < I0_REGNUM + 8)
-	    addr = (frame1->prev->bottom
-		    + (regnum - I0_REGNUM) * SPARC_INTREG_SIZE
-		    + FRAME_SAVED_I0);
-	  else if (regnum >= L0_REGNUM && regnum < L0_REGNUM + 8)
-	    addr = (frame1->prev->bottom
-		    + (regnum - L0_REGNUM) * SPARC_INTREG_SIZE
-		    + FRAME_SAVED_L0);
-	  else if (regnum >= O0_REGNUM && regnum < O0_REGNUM + 8)
-	    {
-	      /* Outs become ins.  */
-	      get_saved_register (raw_buffer, optimized, addrp, frame1,
-				  (regnum - O0_REGNUM + I0_REGNUM), lval);
-	      return;
-	    }
-	}
-      if (addr != 0)
-	break;
-      frame1 = frame1->next;
-    }
-  if (addr != 0)
-    {
-      if (lval != NULL)
-	*lval = lval_memory;
-      if (regnum == SP_REGNUM)
-	{
-	  if (raw_buffer != NULL)
-	    {
-	      /* Put it back in target format.  */
-	      store_address (raw_buffer, REGISTER_RAW_SIZE (regnum), addr);
-	    }
-	  if (addrp != NULL)
-	    *addrp = 0;
-	  return;
-	}
-      if (raw_buffer != NULL)
-	read_memory (addr, raw_buffer, REGISTER_RAW_SIZE (regnum));
-    }
-  else
-    {
-      if (lval != NULL)
-	*lval = lval_register;
-      addr = REGISTER_BYTE (regnum);
-      if (raw_buffer != NULL)
-	read_register_gen (regnum, raw_buffer);
-    }
-  if (addrp != NULL)
-    *addrp = addr;
-}
-
-/* Push an empty stack frame, and record in it the current PC, regs, etc.
-
-   We save the non-windowed registers and the ins.  The locals and outs
-   are new; they don't need to be saved. The i's and l's of
-   the last frame were already saved on the stack.  */
-
-/* Definitely see tm-sparc.h for more doc of the frame format here.  */
-
-#ifdef GDB_TARGET_IS_SPARC64
-#define DUMMY_REG_SAVE_OFFSET (128 + 16)
-#else
-#define DUMMY_REG_SAVE_OFFSET 0x60
-#endif
-
-/* See tm-sparc.h for how this is calculated.  */
-#ifdef FP0_REGNUM
-#define DUMMY_STACK_REG_BUF_SIZE \
-(((8+8+8) * SPARC_INTREG_SIZE) + FP_REGISTER_BYTES)
-#else
-#define DUMMY_STACK_REG_BUF_SIZE \
-(((8+8+8) * SPARC_INTREG_SIZE) )
-#endif /* FP0_REGNUM */
-#define DUMMY_STACK_SIZE (DUMMY_STACK_REG_BUF_SIZE + DUMMY_REG_SAVE_OFFSET)
-
-void
-sparc_push_dummy_frame ()
-{
-  CORE_ADDR sp, old_sp;
-  char register_temp[DUMMY_STACK_SIZE];
-
-  old_sp = sp = read_sp ();
-
-#ifdef GDB_TARGET_IS_SPARC64
-  /* PC, NPC, CCR, FSR, FPRS, Y, ASI */
-  read_register_bytes (REGISTER_BYTE (PC_REGNUM), &register_temp[0],
-		       REGISTER_RAW_SIZE (PC_REGNUM) * 7);
-  read_register_bytes (REGISTER_BYTE (PSTATE_REGNUM), &register_temp[8],
-		       REGISTER_RAW_SIZE (PSTATE_REGNUM));
-  /* FIXME: not sure what needs to be saved here.  */
-#else
-  /* Y, PS, WIM, TBR, PC, NPC, FPS, CPS regs */
-  read_register_bytes (REGISTER_BYTE (Y_REGNUM), &register_temp[0],
-		       REGISTER_RAW_SIZE (Y_REGNUM) * 8);
-#endif
-
-  read_register_bytes (REGISTER_BYTE (O0_REGNUM),
-		       &register_temp[8 * SPARC_INTREG_SIZE],
-		       SPARC_INTREG_SIZE * 8);
-
-  read_register_bytes (REGISTER_BYTE (G0_REGNUM),
-		       &register_temp[16 * SPARC_INTREG_SIZE],
-		       SPARC_INTREG_SIZE * 8);
-
-#ifdef FP0_REGNUM
-  read_register_bytes (REGISTER_BYTE (FP0_REGNUM),
-		       &register_temp[24 * SPARC_INTREG_SIZE],
-		       FP_REGISTER_BYTES);
-#endif /* FP0_REGNUM */
-
-  sp -= DUMMY_STACK_SIZE;
-
-  write_sp (sp);
-
-  write_memory (sp + DUMMY_REG_SAVE_OFFSET, &register_temp[0],
-		DUMMY_STACK_REG_BUF_SIZE);
-
-  if (strcmp (target_shortname, "sim") != 0)
-    {
-      write_fp (old_sp);
-
-      /* Set return address register for the call dummy to the current PC.  */
-      write_register (I7_REGNUM, read_pc() - 8);
-    }
-  else
-    {
-      /* The call dummy will write this value to FP before executing
-         the 'save'.  This ensures that register window flushes work
-	 correctly in the simulator.  */
-      write_register (G0_REGNUM+1, read_register (FP_REGNUM));
-    
-      /* The call dummy will write this value to FP after executing
-         the 'save'. */
-      write_register (G0_REGNUM+2, old_sp);
-    
-      /* The call dummy will write this value to the return address (%i7) after
-	 executing the 'save'. */
-      write_register (G0_REGNUM+3, read_pc() - 8);
-    
-      /* Set the FP that the call dummy will be using after the 'save'.
-	 This makes backtraces from an inferior function call work properly.  */
-      write_register (FP_REGNUM, old_sp);
-    }
-}
-
-/* sparc_frame_find_saved_regs ().  This function is here only because
-   pop_frame uses it.  Note there is an interesting corner case which
-   I think few ports of GDB get right--if you are popping a frame
-   which does not save some register that *is* saved by a more inner
-   frame (such a frame will never be a dummy frame because dummy
-   frames save all registers).  Rewriting pop_frame to use
-   get_saved_register would solve this problem and also get rid of the
-   ugly duplication between sparc_frame_find_saved_regs and
-   get_saved_register.
-
-   Stores, into a struct frame_saved_regs,
-   the addresses of the saved registers of frame described by FRAME_INFO.
-   This includes special registers such as pc and fp saved in special
-   ways in the stack frame.  sp is even more special:
-   the address we return for it IS the sp for the next frame.
-
-   Note that on register window machines, we are currently making the
-   assumption that window registers are being saved somewhere in the
-   frame in which they are being used.  If they are stored in an
-   inferior frame, find_saved_register will break.
-
-   On the Sun 4, the only time all registers are saved is when
-   a dummy frame is involved.  Otherwise, the only saved registers
-   are the LOCAL and IN registers which are saved as a result
-   of the "save/restore" opcodes.  This condition is determined
-   by address rather than by value.
-
-   The "pc" is not stored in a frame on the SPARC.  (What is stored
-   is a return address minus 8.)  sparc_pop_frame knows how to
-   deal with that.  Other routines might or might not.
-
-   See tm-sparc.h (PUSH_DUMMY_FRAME and friends) for CRITICAL information
-   about how this works.  */
-
-static void sparc_frame_find_saved_regs PARAMS ((struct frame_info *,
-						 struct frame_saved_regs *));
-
-static void
-sparc_frame_find_saved_regs (fi, saved_regs_addr)
-     struct frame_info *fi;
-     struct frame_saved_regs *saved_regs_addr;
-{
-  register int regnum;
-  CORE_ADDR frame_addr = FRAME_FP (fi);
-
-  if (!fi)
-    fatal ("Bad frame info struct in FRAME_FIND_SAVED_REGS");
-
-  memset (saved_regs_addr, 0, sizeof (*saved_regs_addr));
-
-  if (fi->pc >= (fi->bottom ? fi->bottom :
-		   read_sp ())
-      && fi->pc <= FRAME_FP(fi))
-    {
-      /* Dummy frame.  All but the window regs are in there somewhere. */
-      for (regnum = G1_REGNUM; regnum < G1_REGNUM+7; regnum++)
-	saved_regs_addr->regs[regnum] =
-	  frame_addr + (regnum - G0_REGNUM) * SPARC_INTREG_SIZE
-	    - DUMMY_STACK_REG_BUF_SIZE + 16 * SPARC_INTREG_SIZE;
-      for (regnum = I0_REGNUM; regnum < I0_REGNUM+8; regnum++)
-	saved_regs_addr->regs[regnum] =
-	  frame_addr + (regnum - I0_REGNUM) * SPARC_INTREG_SIZE
-	    - DUMMY_STACK_REG_BUF_SIZE + 8 * SPARC_INTREG_SIZE;
-#ifdef FP0_REGNUM
-      for (regnum = FP0_REGNUM; regnum < FP0_REGNUM + 32; regnum++)
-	saved_regs_addr->regs[regnum] =
-	  frame_addr + (regnum - FP0_REGNUM) * 4
-	    - DUMMY_STACK_REG_BUF_SIZE + 24 * SPARC_INTREG_SIZE;
-#ifdef GDB_TARGET_IS_SPARC64
-      for (regnum = FP0_REGNUM + 32; regnum < FP_MAX_REGNUM; regnum++)
-	saved_regs_addr->regs[regnum] =
-	  frame_addr + 32 * 4 + (regnum - FP0_REGNUM - 32) * 4
-	    - DUMMY_STACK_REG_BUF_SIZE + 24 * SPARC_INTREG_SIZE;
-#endif
-#endif /* FP0_REGNUM */
-#ifdef GDB_TARGET_IS_SPARC64
-      for (regnum = PC_REGNUM; regnum < PC_REGNUM + 7; regnum++)
-	{
-	  saved_regs_addr->regs[regnum] =
-	    frame_addr + (regnum - PC_REGNUM) * SPARC_INTREG_SIZE 
-	      - DUMMY_STACK_REG_BUF_SIZE;
-	}
-      saved_regs_addr->regs[PSTATE_REGNUM] = 
-	frame_addr + 8 * SPARC_INTREG_SIZE - DUMMY_STACK_REG_BUF_SIZE;
-#else
-      for (regnum = Y_REGNUM; regnum < NUM_REGS; regnum++)
-	saved_regs_addr->regs[regnum] =
-	  frame_addr + (regnum - Y_REGNUM) * SPARC_INTREG_SIZE 
-	    - DUMMY_STACK_REG_BUF_SIZE;
-#endif
-      frame_addr = fi->bottom ?
-	fi->bottom : read_sp ();
-    }
-  else if (fi->flat)
-    {
-      CORE_ADDR func_start;
-      find_pc_partial_function (fi->pc, NULL, &func_start, NULL);
-      examine_prologue (func_start, 0, fi, saved_regs_addr);
-
-      /* Flat register window frame.  */
-      saved_regs_addr->regs[RP_REGNUM] = fi->pc_addr;
-      saved_regs_addr->regs[I7_REGNUM] = fi->fp_addr;
-    }
-  else
-    {
-      /* Normal frame.  Just Local and In registers */
-      frame_addr = fi->bottom ?
-	fi->bottom : read_sp ();
-      for (regnum = L0_REGNUM; regnum < L0_REGNUM+8; regnum++)
-	saved_regs_addr->regs[regnum] =
-	  (frame_addr + (regnum - L0_REGNUM) * SPARC_INTREG_SIZE
-	   + FRAME_SAVED_L0);
-      for (regnum = I0_REGNUM; regnum < I0_REGNUM+8; regnum++)
-	saved_regs_addr->regs[regnum] =
-	  (frame_addr + (regnum - I0_REGNUM) * SPARC_INTREG_SIZE
-	   + FRAME_SAVED_I0);
-    }
-  if (fi->next)
-    {
-      if (fi->flat)
-	{
-	  saved_regs_addr->regs[O7_REGNUM] = fi->pc_addr;
-	}
-      else
-	{
-	  /* Pull off either the next frame pointer or the stack pointer */
-	  CORE_ADDR next_next_frame_addr =
-	    (fi->next->bottom ?
-	     fi->next->bottom :
-	     read_sp ());
-	  for (regnum = O0_REGNUM; regnum < O0_REGNUM+8; regnum++)
-	    saved_regs_addr->regs[regnum] =
-	      (next_next_frame_addr
-	       + (regnum - O0_REGNUM) * SPARC_INTREG_SIZE
-	       + FRAME_SAVED_I0);
-	}
-    }
-  /* Otherwise, whatever we would get from ptrace(GETREGS) is accurate */
-  /* FIXME -- should this adjust for the sparc64 offset? */
-  saved_regs_addr->regs[SP_REGNUM] = FRAME_FP (fi);
-}
-
-/* Discard from the stack the innermost frame, restoring all saved registers.
-
-   Note that the values stored in fsr by get_frame_saved_regs are *in
-   the context of the called frame*.  What this means is that the i
-   regs of fsr must be restored into the o regs of the (calling) frame that
-   we pop into.  We don't care about the output regs of the calling frame,
-   since unless it's a dummy frame, it won't have any output regs in it.
-
-   We never have to bother with %l (local) regs, since the called routine's
-   locals get tossed, and the calling routine's locals are already saved
-   on its stack.  */
-
-/* Definitely see tm-sparc.h for more doc of the frame format here.  */
-
-void
-sparc_pop_frame ()
-{
-  register struct frame_info *frame = get_current_frame ();
-  register CORE_ADDR pc;
-  struct frame_saved_regs fsr;
-  char raw_buffer[REGISTER_BYTES];
-  int regnum;
-
-  sparc_frame_find_saved_regs (frame, &fsr);
-#ifdef FP0_REGNUM
-  if (fsr.regs[FP0_REGNUM])
-    {
-      read_memory (fsr.regs[FP0_REGNUM], raw_buffer, FP_REGISTER_BYTES);
-      write_register_bytes (REGISTER_BYTE (FP0_REGNUM),
-			    raw_buffer, FP_REGISTER_BYTES);
-    }
-#ifndef GDB_TARGET_IS_SPARC64
-  if (fsr.regs[FPS_REGNUM])
-    {
-      read_memory (fsr.regs[FPS_REGNUM], raw_buffer, 4);
-      write_register_bytes (REGISTER_BYTE (FPS_REGNUM), raw_buffer, 4);
-    }
-  if (fsr.regs[CPS_REGNUM])
-    {
-      read_memory (fsr.regs[CPS_REGNUM], raw_buffer, 4);
-      write_register_bytes (REGISTER_BYTE (CPS_REGNUM), raw_buffer, 4);
-    }
-#endif
-#endif /* FP0_REGNUM */
-  if (fsr.regs[G1_REGNUM])
-    {
-      read_memory (fsr.regs[G1_REGNUM], raw_buffer, 7 * SPARC_INTREG_SIZE);
-      write_register_bytes (REGISTER_BYTE (G1_REGNUM), raw_buffer,
-			    7 * SPARC_INTREG_SIZE);
-    }
-
-  if (frame->flat)
-    {
-      /* Each register might or might not have been saved, need to test
-	 individually.  */
-      for (regnum = L0_REGNUM; regnum < L0_REGNUM + 8; ++regnum)
-	if (fsr.regs[regnum])
-	  write_register (regnum, read_memory_integer (fsr.regs[regnum],
-						       SPARC_INTREG_SIZE));
-      for (regnum = I0_REGNUM; regnum < I0_REGNUM + 8; ++regnum)
-	if (fsr.regs[regnum])
-	  write_register (regnum, read_memory_integer (fsr.regs[regnum],
-						       SPARC_INTREG_SIZE));
-
-      /* Handle all outs except stack pointer (o0-o5; o7).  */
-      for (regnum = O0_REGNUM; regnum < O0_REGNUM + 6; ++regnum)
-	if (fsr.regs[regnum])
-	  write_register (regnum, read_memory_integer (fsr.regs[regnum],
-						       SPARC_INTREG_SIZE));
-      if (fsr.regs[O0_REGNUM + 7])
-	write_register (O0_REGNUM + 7,
-			read_memory_integer (fsr.regs[O0_REGNUM + 7],
-					     SPARC_INTREG_SIZE));
-
-      write_sp (frame->frame);
-    }
-  else if (fsr.regs[I0_REGNUM])
-    {
-      CORE_ADDR sp;
-
-      char reg_temp[REGISTER_BYTES];
-
-      read_memory (fsr.regs[I0_REGNUM], raw_buffer, 8 * SPARC_INTREG_SIZE);
-
-      /* Get the ins and locals which we are about to restore.  Just
-	 moving the stack pointer is all that is really needed, except
-	 store_inferior_registers is then going to write the ins and
-	 locals from the registers array, so we need to muck with the
-	 registers array.  */
-      sp = fsr.regs[SP_REGNUM];
-#ifdef GDB_TARGET_IS_SPARC64
-      if (sp & 1)
-	sp += 2047;
-#endif
-      read_memory (sp, reg_temp, SPARC_INTREG_SIZE * 16);
-
-      /* Restore the out registers.
-	 Among other things this writes the new stack pointer.  */
-      write_register_bytes (REGISTER_BYTE (O0_REGNUM), raw_buffer,
-			    SPARC_INTREG_SIZE * 8);
-
-      write_register_bytes (REGISTER_BYTE (L0_REGNUM), reg_temp,
-			    SPARC_INTREG_SIZE * 16);
-    }
-#ifndef GDB_TARGET_IS_SPARC64
-  if (fsr.regs[PS_REGNUM])
-    write_register (PS_REGNUM, read_memory_integer (fsr.regs[PS_REGNUM], 4));
-#endif
-  if (fsr.regs[Y_REGNUM])
-    write_register (Y_REGNUM, read_memory_integer (fsr.regs[Y_REGNUM], REGISTER_RAW_SIZE (Y_REGNUM)));
-  if (fsr.regs[PC_REGNUM])
-    {
-      /* Explicitly specified PC (and maybe NPC) -- just restore them. */
-      write_register (PC_REGNUM, read_memory_integer (fsr.regs[PC_REGNUM],
-						      REGISTER_RAW_SIZE (PC_REGNUM)));
-      if (fsr.regs[NPC_REGNUM])
-	write_register (NPC_REGNUM,
-			read_memory_integer (fsr.regs[NPC_REGNUM],
-					     REGISTER_RAW_SIZE (NPC_REGNUM)));
-    }
-  else if (frame->flat)
-    {
-      if (frame->pc_addr)
-	pc = PC_ADJUST ((CORE_ADDR)
-			read_memory_integer (frame->pc_addr,
-					     REGISTER_RAW_SIZE (PC_REGNUM)));
-      else
-	{
-	  /* I think this happens only in the innermost frame, if so then
-	     it is a complicated way of saying
-	     "pc = read_register (O7_REGNUM);".  */
-	  char buf[MAX_REGISTER_RAW_SIZE];
-	  get_saved_register (buf, 0, 0, frame, O7_REGNUM, 0);
-	  pc = PC_ADJUST (extract_address
-			  (buf, REGISTER_RAW_SIZE (O7_REGNUM)));
-	}
-
-      write_register (PC_REGNUM,  pc);
-      write_register (NPC_REGNUM, pc + 4);
-    }
-  else if (fsr.regs[I7_REGNUM])
-    {
-      /* Return address in %i7 -- adjust it, then restore PC and NPC from it */
-      pc = PC_ADJUST ((CORE_ADDR) read_memory_integer (fsr.regs[I7_REGNUM],
-						       SPARC_INTREG_SIZE));
-      write_register (PC_REGNUM,  pc);
-      write_register (NPC_REGNUM, pc + 4);
-    }
-  flush_cached_frames ();
-}
-
-/* On the Sun 4 under SunOS, the compile will leave a fake insn which
-   encodes the structure size being returned.  If we detect such
-   a fake insn, step past it.  */
-
-CORE_ADDR
-sparc_pc_adjust(pc)
-     CORE_ADDR pc;
-{
-  unsigned long insn;
-  char buf[4];
-  int err;
-
-  err = target_read_memory (pc + 8, buf, 4);
-  insn = extract_unsigned_integer (buf, 4);
-  if ((err == 0) && (insn & 0xffc00000) == 0)
-    return pc+12;
-  else
-    return pc+8;
-}
-
-/* If pc is in a shared library trampoline, return its target.
-   The SunOs 4.x linker rewrites the jump table entries for PIC
-   compiled modules in the main executable to bypass the dynamic linker
-   with jumps of the form
-	sethi %hi(addr),%g1
-	jmp %g1+%lo(addr)
-   and removes the corresponding jump table relocation entry in the
-   dynamic relocations.
-   find_solib_trampoline_target relies on the presence of the jump
-   table relocation entry, so we have to detect these jump instructions
-   by hand.  */
-
-CORE_ADDR
-sunos4_skip_trampoline_code (pc)
-     CORE_ADDR pc;
-{
-  unsigned long insn1;
-  char buf[4];
-  int err;
-
-  err = target_read_memory (pc, buf, 4);
-  insn1 = extract_unsigned_integer (buf, 4);
-  if (err == 0 && (insn1 & 0xffc00000) == 0x03000000)
-    {
-      unsigned long insn2;
-
-      err = target_read_memory (pc + 4, buf, 4);
-      insn2 = extract_unsigned_integer (buf, 4);
-      if (err == 0 && (insn2 & 0xffffe000) == 0x81c06000)
-	{
-	  CORE_ADDR target_pc = (insn1 & 0x3fffff) << 10;
-	  int delta = insn2 & 0x1fff;
-
-	  /* Sign extend the displacement.  */
-	  if (delta & 0x1000)
-	    delta |= ~0x1fff;
-	  return target_pc + delta;
-	}
-    }
-  return find_solib_trampoline_target (pc);
-}
-
-#ifdef USE_PROC_FS	/* Target dependent support for /proc */
-
-/*  The /proc interface divides the target machine's register set up into
-    two different sets, the general register set (gregset) and the floating
-    point register set (fpregset).  For each set, there is an ioctl to get
-    the current register set and another ioctl to set the current values.
-
-    The actual structure passed through the ioctl interface is, of course,
-    naturally machine dependent, and is different for each set of registers.
-    For the sparc for example, the general register set is typically defined
-    by:
-
-	typedef int gregset_t[38];
-
-	#define	R_G0	0
-	...
-	#define	R_TBR	37
-
-    and the floating point set by:
-
-	typedef struct prfpregset {
-		union { 
-			u_long  pr_regs[32]; 
-			double  pr_dregs[16];
-		} pr_fr;
-		void *  pr_filler;
-		u_long  pr_fsr;
-		u_char  pr_qcnt;
-		u_char  pr_q_entrysize;
-		u_char  pr_en;
-		u_long  pr_q[64];
-	} prfpregset_t;
-
-    These routines provide the packing and unpacking of gregset_t and
-    fpregset_t formatted data.
-
- */
-
-/* Given a pointer to a general register set in /proc format (gregset_t *),
-   unpack the register contents and supply them as gdb's idea of the current
-   register values. */
-
-void
-supply_gregset (gregsetp)
-prgregset_t *gregsetp;
-{
-  register int regi;
-  register prgreg_t *regp = (prgreg_t *) gregsetp;
-  static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0};
-
-  /* GDB register numbers for Gn, On, Ln, In all match /proc reg numbers.  */
-  for (regi = G0_REGNUM ; regi <= I7_REGNUM ; regi++)
-    {
-      supply_register (regi, (char *) (regp + regi));
-    }
-
-  /* These require a bit more care.  */
-  supply_register (PS_REGNUM, (char *) (regp + R_PS));
-  supply_register (PC_REGNUM, (char *) (regp + R_PC));
-  supply_register (NPC_REGNUM,(char *) (regp + R_nPC));
-  supply_register (Y_REGNUM,  (char *) (regp + R_Y));
-
-  /* Fill inaccessible registers with zero.  */
-  supply_register (WIM_REGNUM, zerobuf);
-  supply_register (TBR_REGNUM, zerobuf);
-  supply_register (CPS_REGNUM, zerobuf);
-}
-
-void
-fill_gregset (gregsetp, regno)
-prgregset_t *gregsetp;
-int regno;
-{
-  int regi;
-  register prgreg_t *regp = (prgreg_t *) gregsetp;
-
-  for (regi = 0 ; regi <= R_I7 ; regi++)
-    {
-      if ((regno == -1) || (regno == regi))
-	{
-	  *(regp + regi) = *(int *) &registers[REGISTER_BYTE (regi)];
-	}
-    }
-  if ((regno == -1) || (regno == PS_REGNUM))
-    {
-      *(regp + R_PS) = *(int *) &registers[REGISTER_BYTE (PS_REGNUM)];
-    }
-  if ((regno == -1) || (regno == PC_REGNUM))
-    {
-      *(regp + R_PC) = *(int *) &registers[REGISTER_BYTE (PC_REGNUM)];
-    }
-  if ((regno == -1) || (regno == NPC_REGNUM))
-    {
-      *(regp + R_nPC) = *(int *) &registers[REGISTER_BYTE (NPC_REGNUM)];
-    }
-  if ((regno == -1) || (regno == Y_REGNUM))
-    {
-      *(regp + R_Y) = *(int *) &registers[REGISTER_BYTE (Y_REGNUM)];
-    }
-}
-
-#if defined (FP0_REGNUM)
-
-/*  Given a pointer to a floating point register set in /proc format
-    (fpregset_t *), unpack the register contents and supply them as gdb's
-    idea of the current floating point register values. */
-
-void 
-supply_fpregset (fpregsetp)
-prfpregset_t *fpregsetp;
-{
-  register int regi;
-  char *from;
-  
-  for (regi = FP0_REGNUM ; regi < FP_MAX_REGNUM ; regi++)
-    {
-      from = (char *) &fpregsetp->pr_fr.pr_regs[regi-FP0_REGNUM];
-      supply_register (regi, from);
-    }
-  supply_register (FPS_REGNUM, (char *) &(fpregsetp->pr_fsr));
-}
-
-/*  Given a pointer to a floating point register set in /proc format
-    (fpregset_t *), update the register specified by REGNO from gdb's idea
-    of the current floating point register set.  If REGNO is -1, update
-    them all. */
-/* ??? This will probably need some changes for sparc64.  */
-
-void
-fill_fpregset (fpregsetp, regno)
-prfpregset_t *fpregsetp;
-int regno;
-{
-  int regi;
-  char *to;
-  char *from;
-
-  for (regi = FP0_REGNUM ; regi < FP_MAX_REGNUM ; regi++)
-    {
-      if ((regno == -1) || (regno == regi))
-	{
-	  from = (char *) &registers[REGISTER_BYTE (regi)];
-	  to = (char *) &fpregsetp->pr_fr.pr_regs[regi-FP0_REGNUM];
-	  memcpy (to, from, REGISTER_RAW_SIZE (regi));
-	}
-    }
-  if ((regno == -1) || (regno == FPS_REGNUM))
-    {
-      fpregsetp->pr_fsr = *(int *) &registers[REGISTER_BYTE (FPS_REGNUM)];
-    }
-}
-
-#endif	/* defined (FP0_REGNUM) */
-
-#endif  /* USE_PROC_FS */
-
-
-#ifdef GET_LONGJMP_TARGET
-
-/* Figure out where the longjmp will land.  We expect that we have just entered
-   longjmp and haven't yet setup the stack frame, so the args are still in the
-   output regs.  %o0 (O0_REGNUM) points at the jmp_buf structure from which we
-   extract the pc (JB_PC) that we will land at.  The pc is copied into ADDR.
-   This routine returns true on success */
-
-int
-get_longjmp_target (pc)
-     CORE_ADDR *pc;
-{
-  CORE_ADDR jb_addr;
-#define LONGJMP_TARGET_SIZE 4
-  char buf[LONGJMP_TARGET_SIZE];
-
-  jb_addr = read_register (O0_REGNUM);
-
-  if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf,
-			  LONGJMP_TARGET_SIZE))
-    return 0;
-
-  *pc = extract_address (buf, LONGJMP_TARGET_SIZE);
-
-  return 1;
-}
-#endif /* GET_LONGJMP_TARGET */
-
-#ifdef STATIC_TRANSFORM_NAME
-/* SunPRO (3.0 at least), encodes the static variables.  This is not
-   related to C++ mangling, it is done for C too.  */
-
-char *
-sunpro_static_transform_name (name)
-     char *name;
-{
-  char *p;
-  if (name[0] == '$')
-    {
-      /* For file-local statics there will be a dollar sign, a bunch
-	 of junk (the contents of which match a string given in the
-	 N_OPT), a period and the name.  For function-local statics
-	 there will be a bunch of junk (which seems to change the
-	 second character from 'A' to 'B'), a period, the name of the
-	 function, and the name.  So just skip everything before the
-	 last period.  */
-      p = strrchr (name, '.');
-      if (p != NULL)
-	name = p + 1;
-    }
-  return name;
-}
-#endif /* STATIC_TRANSFORM_NAME */
-
-
-/* Utilities for printing registers.
-   Page numbers refer to the SPARC Architecture Manual.  */
-
-static void dump_ccreg PARAMS ((char *, int));
-
-static void
-dump_ccreg (reg, val)
-     char *reg;
-     int val;
-{
-  /* page 41 */
-  printf_unfiltered ("%s:%s,%s,%s,%s", reg,
-	  val & 8 ? "N" : "NN",
-	  val & 4 ? "Z" : "NZ",
-	  val & 2 ? "O" : "NO",
-	  val & 1 ? "C" : "NC"
-  );
-}
-
-static char *
-decode_asi (val)
-     int val;
-{
-  /* page 72 */
-  switch (val)
-    {
-    case 4 : return "ASI_NUCLEUS";
-    case 0x0c : return "ASI_NUCLEUS_LITTLE";
-    case 0x10 : return "ASI_AS_IF_USER_PRIMARY";
-    case 0x11 : return "ASI_AS_IF_USER_SECONDARY";
-    case 0x18 : return "ASI_AS_IF_USER_PRIMARY_LITTLE";
-    case 0x19 : return "ASI_AS_IF_USER_SECONDARY_LITTLE";
-    case 0x80 : return "ASI_PRIMARY";
-    case 0x81 : return "ASI_SECONDARY";
-    case 0x82 : return "ASI_PRIMARY_NOFAULT";
-    case 0x83 : return "ASI_SECONDARY_NOFAULT";
-    case 0x88 : return "ASI_PRIMARY_LITTLE";
-    case 0x89 : return "ASI_SECONDARY_LITTLE";
-    case 0x8a : return "ASI_PRIMARY_NOFAULT_LITTLE";
-    case 0x8b : return "ASI_SECONDARY_NOFAULT_LITTLE";
-    default : return NULL;
-    }
-}
-
-/* PRINT_REGISTER_HOOK routine.
-   Pretty print various registers.  */
-/* FIXME: Would be nice if this did some fancy things for 32 bit sparc.  */
-
-void
-sparc_print_register_hook (regno)
-     int regno;
-{
-  ULONGEST val;
-
-  /* Handle double/quad versions of lower 32 fp regs.  */
-  if (regno >= FP0_REGNUM && regno < FP0_REGNUM + 32
-      && (regno & 1) == 0)
-    {
-      char value[16];
-
-      if (!read_relative_register_raw_bytes (regno, value)
-	  && !read_relative_register_raw_bytes (regno + 1, value + 4))
-	{
-	  printf_unfiltered ("\t");
-	  print_floating (value, builtin_type_double, gdb_stdout);
-	}
-#if 0 /* FIXME: gdb doesn't handle long doubles */
-      if ((regno & 3) == 0)
-	{
-	  if (!read_relative_register_raw_bytes (regno + 2, value + 8)
-	      && !read_relative_register_raw_bytes (regno + 3, value + 12))
-	    {
-	      printf_unfiltered ("\t");
-	      print_floating (value, builtin_type_long_double, gdb_stdout);
-	    }
-	}
-#endif
-      return;
-    }
-
-#if 0 /* FIXME: gdb doesn't handle long doubles */
-  /* Print upper fp regs as long double if appropriate.  */
-  if (regno >= FP0_REGNUM + 32 && regno < FP_MAX_REGNUM
-      /* We test for even numbered regs and not a multiple of 4 because
-	 the upper fp regs are recorded as doubles.  */
-      && (regno & 1) == 0)
-    {
-      char value[16];
-
-      if (!read_relative_register_raw_bytes (regno, value)
-	  && !read_relative_register_raw_bytes (regno + 1, value + 8))
-	{
-	  printf_unfiltered ("\t");
-	  print_floating (value, builtin_type_long_double, gdb_stdout);
-	}
-      return;
-    }
-#endif
-
-  /* FIXME: Some of these are priviledged registers.
-     Not sure how they should be handled.  */
-
-#define BITS(n, mask) ((int) (((val) >> (n)) & (mask)))
-
-  val = read_register (regno);
-
-  /* pages 40 - 60 */
-  switch (regno)
-    {
-#ifdef GDB_TARGET_IS_SPARC64
-    case CCR_REGNUM :
-      printf_unfiltered("\t");
-      dump_ccreg ("xcc", val >> 4);
-      printf_unfiltered(", ");
-      dump_ccreg ("icc", val & 15);
-      break;
-    case FPRS_REGNUM :
-      printf ("\tfef:%d, du:%d, dl:%d",
-	      BITS (2, 1), BITS (1, 1), BITS (0, 1));
-      break;
-    case FSR_REGNUM :
-      {
-	static char *fcc[4] = { "=", "<", ">", "?" };
-	static char *rd[4] = { "N", "0", "+", "-" };
-	/* Long, yes, but I'd rather leave it as is and use a wide screen.  */
-	printf ("\t0:%s, 1:%s, 2:%s, 3:%s, rd:%s, tem:%d, ns:%d, ver:%d, ftt:%d, qne:%d, aexc:%d, cexc:%d",
-		fcc[BITS (10, 3)], fcc[BITS (32, 3)],
-		fcc[BITS (34, 3)], fcc[BITS (36, 3)],
-		rd[BITS (30, 3)], BITS (23, 31), BITS (22, 1), BITS (17, 7),
-		BITS (14, 7), BITS (13, 1), BITS (5, 31), BITS (0, 31));
-	break;
-      }
-    case ASI_REGNUM :
-      {
-	char *asi = decode_asi (val);
-	if (asi != NULL)
-	  printf ("\t%s", asi);
-	break;
-      }
-    case VER_REGNUM :
-      printf ("\tmanuf:%d, impl:%d, mask:%d, maxtl:%d, maxwin:%d",
-	      BITS (48, 0xffff), BITS (32, 0xffff),
-	      BITS (24, 0xff), BITS (8, 0xff), BITS (0, 31));
-      break;
-    case PSTATE_REGNUM :
-      {
-	static char *mm[4] = { "tso", "pso", "rso", "?" };
-	printf ("\tcle:%d, tle:%d, mm:%s, red:%d, pef:%d, am:%d, priv:%d, ie:%d, ag:%d",
-		BITS (9, 1), BITS (8, 1), mm[BITS (6, 3)], BITS (5, 1),
-		BITS (4, 1), BITS (3, 1), BITS (2, 1), BITS (1, 1),
-		BITS (0, 1));
-	break;
-      }
-    case TSTATE_REGNUM :
-      /* FIXME: print all 4? */
-      break;
-    case TT_REGNUM :
-      /* FIXME: print all 4? */
-      break;
-    case TPC_REGNUM :
-      /* FIXME: print all 4? */
-      break;
-    case TNPC_REGNUM :
-      /* FIXME: print all 4? */
-      break;
-    case WSTATE_REGNUM :
-      printf ("\tother:%d, normal:%d", BITS (3, 7), BITS (0, 7));
-      break;
-    case CWP_REGNUM :
-      printf ("\t%d", BITS (0, 31));
-      break;
-    case CANSAVE_REGNUM :
-      printf ("\t%-2d before spill", BITS (0, 31));
-      break;
-    case CANRESTORE_REGNUM :
-      printf ("\t%-2d before fill", BITS (0, 31));
-      break;
-    case CLEANWIN_REGNUM :
-      printf ("\t%-2d before clean", BITS (0, 31));
-      break;
-    case OTHERWIN_REGNUM :
-      printf ("\t%d", BITS (0, 31));
-      break;
-#else
-    case PS_REGNUM:
-      printf ("\ticc:%c%c%c%c, pil:%d, s:%d, ps:%d, et:%d, cwp:%d",
-	      BITS (23, 1) ? 'N' : '-', BITS (22, 1) ? 'Z' : '-',
-	      BITS (21, 1) ? 'V' : '-', BITS (20, 1) ? 'C' : '-',
-	      BITS (8, 15), BITS (7, 1), BITS (6, 1), BITS (5, 1),
-	      BITS (0, 31));
-      break;
-    case FPS_REGNUM:
-      {
-	static char *fcc[4] = { "=", "<", ">", "?" };
-	static char *rd[4] = { "N", "0", "+", "-" };
-	/* Long, yes, but I'd rather leave it as is and use a wide screen.  */
-	printf ("\trd:%s, tem:%d, ns:%d, ver:%d, ftt:%d, qne:%d, "
-		"fcc:%s, aexc:%d, cexc:%d",
-		rd[BITS (30, 3)], BITS (23, 31), BITS (22, 1), BITS (17, 7),
-		BITS (14, 7), BITS (13, 1), fcc[BITS (10, 3)], BITS (5, 31),
-		BITS (0, 31));
-	break;
-      }
-
-#endif	/* GDB_TARGET_IS_SPARC64 */
-    }
-
-#undef BITS
-}
-
-int
-gdb_print_insn_sparc (memaddr, info)
-     bfd_vma memaddr;
-     disassemble_info *info;
-{
-  /* It's necessary to override mach again because print_insn messes it up. */
-  info->mach = TM_PRINT_INSN_MACH;
-  return print_insn_sparc (memaddr, info);
-}
-
-/* The SPARC passes the arguments on the stack; arguments smaller
-   than an int are promoted to an int.  */
-
-CORE_ADDR
-sparc_push_arguments (nargs, args, sp, struct_return, struct_addr)
-     int nargs;
-     value_ptr *args;
-     CORE_ADDR sp;
-     int struct_return;
-     CORE_ADDR struct_addr;
-{
-  int i;
-  int accumulate_size = 0;
-  struct sparc_arg
-    {
-      char *contents;
-      int len;
-      int offset;
-    };
-  struct sparc_arg *sparc_args =
-      (struct sparc_arg*)alloca (nargs * sizeof (struct sparc_arg));
-  struct sparc_arg *m_arg;
-
-  /* Promote arguments if necessary, and calculate their stack offsets
-     and sizes. */
-  for (i = 0, m_arg = sparc_args; i < nargs; i++, m_arg++)
-    {
-      value_ptr arg = args[i];
-      struct type *arg_type = check_typedef (VALUE_TYPE (arg));
-      /* Cast argument to long if necessary as the compiler does it too.  */
-      switch (TYPE_CODE (arg_type))
-	{
-	case TYPE_CODE_INT:
-	case TYPE_CODE_BOOL:
-	case TYPE_CODE_CHAR:
-	case TYPE_CODE_RANGE:
-	case TYPE_CODE_ENUM:
-	  if (TYPE_LENGTH (arg_type) < TYPE_LENGTH (builtin_type_long))
-	    {
-	      arg_type = builtin_type_long;
-	      arg = value_cast (arg_type, arg);
-	    }
-	  break;
-	default:
-	  break;
-	}
-      m_arg->len = TYPE_LENGTH (arg_type);
-      m_arg->offset = accumulate_size;
-      accumulate_size = (accumulate_size + m_arg->len + 3) & ~3;
-      m_arg->contents = VALUE_CONTENTS(arg);
-    }
-
-  /* Make room for the arguments on the stack.  */
-  accumulate_size += CALL_DUMMY_STACK_ADJUST;
-  sp = ((sp - accumulate_size) & ~7) + CALL_DUMMY_STACK_ADJUST;
-
-  /* `Push' arguments on the stack.  */
-  for (i = nargs; m_arg--, --i >= 0; )
-    write_memory(sp + m_arg->offset, m_arg->contents, m_arg->len);
-
-  return sp;
-}
-
-
-/* Extract from an array REGBUF containing the (raw) register state
-   a function return value of type TYPE, and copy that, in virtual format,
-   into VALBUF.  */
-
-void
-sparc_extract_return_value (type, regbuf, valbuf)
-     struct type *type;
-     char *regbuf;
-     char *valbuf;
-{
-  int typelen = TYPE_LENGTH (type);
-  int regsize = REGISTER_RAW_SIZE (O0_REGNUM);
-
-  if (TYPE_CODE (type) == TYPE_CODE_FLT && SPARC_HAS_FPU)
-    memcpy (valbuf, &regbuf [REGISTER_BYTE (FP0_REGNUM)], typelen);
-  else
-    memcpy (valbuf,
-	    &regbuf [O0_REGNUM * regsize +
-		     (typelen >= regsize ? 0 : regsize - typelen)],
-	    typelen);
-}
-
-
-/* Write into appropriate registers a function return value
-   of type TYPE, given in virtual format.  On SPARCs with FPUs,
-   float values are returned in %f0 (and %f1).  In all other cases,
-   values are returned in register %o0.  */
-
-void
-sparc_store_return_value (type, valbuf)
-     struct type *type;
-     char *valbuf;
-{
-  int regno;
-  char buffer[MAX_REGISTER_RAW_SIZE];
-
-  if (TYPE_CODE (type) == TYPE_CODE_FLT && SPARC_HAS_FPU)
-    /* Floating-point values are returned in the register pair */
-    /* formed by %f0 and %f1 (doubles are, anyway).  */
-    regno = FP0_REGNUM;
-  else
-    /* Other values are returned in register %o0.  */
-    regno = O0_REGNUM;
-
-  /* Add leading zeros to the value. */
-  if (TYPE_LENGTH (type) < REGISTER_RAW_SIZE(regno))
-    {
-      bzero (buffer, REGISTER_RAW_SIZE(regno));
-      memcpy (buffer + REGISTER_RAW_SIZE(regno) - TYPE_LENGTH (type), valbuf,
-	      TYPE_LENGTH (type));
-      write_register_bytes (REGISTER_BYTE (regno), buffer, 
-			    REGISTER_RAW_SIZE(regno));
-    }
-  else
-    write_register_bytes (REGISTER_BYTE (regno), valbuf, TYPE_LENGTH (type));
-}
-
-
-/* Insert the function address into a call dummy instsruction sequence
-   stored at DUMMY.
-
-   For structs and unions, if the function was compiled with Sun cc,
-   it expects 'unimp' after the call.  But gcc doesn't use that
-   (twisted) convention.  So leave a nop there for gcc (FIX_CALL_DUMMY
-   can assume it is operating on a pristine CALL_DUMMY, not one that
-   has already been customized for a different function).  */
-
-void
-sparc_fix_call_dummy (dummy, pc, fun, value_type, using_gcc)
-     char *dummy;
-     CORE_ADDR pc;
-     CORE_ADDR fun;
-     struct type *value_type;
-     int using_gcc;
-{
-  int i;
-
-  /* Store the relative adddress of the target function into the
-     'call' instruction. */
-  store_unsigned_integer (dummy + CALL_DUMMY_CALL_OFFSET, 4,
-			  (0x40000000
-			   | (((fun - (pc + CALL_DUMMY_CALL_OFFSET)) >> 2)
-			       & 0x3fffffff)));
-
-  /* Comply with strange Sun cc calling convention for struct-returning
-     functions.  */
-  if (!using_gcc
-      && (TYPE_CODE (value_type) == TYPE_CODE_STRUCT
-	  || TYPE_CODE (value_type) == TYPE_CODE_UNION))
-    store_unsigned_integer (dummy + CALL_DUMMY_CALL_OFFSET + 8, 4,
-			    TYPE_LENGTH (value_type) & 0x1fff);
-
-#ifndef GDB_TARGET_IS_SPARC64
-  /* If this is not a simulator target, change the first four instructions
-     of the call dummy to NOPs.  Those instructions include a 'save'
-     instruction and are designed to work around problems with register
-     window flushing in the simulator. */
-  if (strcmp (target_shortname, "sim") != 0)
-    {
-      for (i = 0; i < 4; i++)
-	store_unsigned_integer (dummy + (i * 4), 4, 0x01000000);
-    }
-#endif
-}
-
-
-/* Set target byte order based on machine type. */
-
-static int
-sparc_target_architecture_hook (ap)
-     const bfd_arch_info_type *ap;
-{
-  int i, j;
-
-#ifdef TARGET_BYTE_ORDER_SELECTABLE
-  if (ap->mach == bfd_mach_sparc_sparclite_le)
-    target_byte_order = LITTLE_ENDIAN;
-#endif
-  return 1;
-}
-
-
-void
-_initialize_sparc_tdep ()
-{
-  tm_print_insn = gdb_print_insn_sparc;
-  tm_print_insn_info.mach = TM_PRINT_INSN_MACH;  /* Selects sparc/sparclite */
-  target_architecture_hook = sparc_target_architecture_hook;
-}
-
-
-#ifdef GDB_TARGET_IS_SPARC64
-
-/* Compensate for stack bias. Note that we currently don't handle mixed
-   32/64 bit code. */
-CORE_ADDR
-sparc64_read_sp ()
-{
-  CORE_ADDR sp = read_register (SP_REGNUM);
-
-  if (sp & 1)
-    sp += 2047;
-  return sp;
-}
-
-CORE_ADDR
-sparc64_read_fp ()
-{
-  CORE_ADDR fp = read_register (FP_REGNUM);
-
-  if (fp & 1)
-    fp += 2047;
-  return fp;
-}
-
-void
-sparc64_write_sp (val)
-     CORE_ADDR val;
-{
-  CORE_ADDR oldsp = read_register (SP_REGNUM);
-  if (oldsp & 1)
-    write_register (SP_REGNUM, val - 2047);
-  else
-    write_register (SP_REGNUM, val);
-}
-
-void
-sparc64_write_fp (val)
-     CORE_ADDR val;
-{
-  CORE_ADDR oldfp = read_register (FP_REGNUM);
-  if (oldfp & 1)
-    write_register (FP_REGNUM, val - 2047);
-  else
-    write_register (FP_REGNUM, val);
-}
-
-/* The SPARC 64 ABI passes floating-point arguments in FP0-31. They are
-   also copied onto the stack in the correct places. */
-
-CORE_ADDR
-sp64_push_arguments (nargs, args, sp, struct_return, struct_retaddr)
-     int nargs;
-     value_ptr *args;
-     CORE_ADDR sp;
-     unsigned char struct_return;
-     CORE_ADDR struct_retaddr;
-{
-  int x;
-  int regnum = 0;
-  CORE_ADDR tempsp;
-  
-  sp = (sp & ~(((unsigned long)TYPE_LENGTH (builtin_type_long)) - 1UL));
-
-  /* Figure out how much space we'll need. */
-  for (x = nargs - 1; x >= 0; x--)
-    {
-      int len = TYPE_LENGTH (check_typedef (VALUE_TYPE (args[x])));
-      value_ptr copyarg = args[x];
-      int copylen = len;
-
-      /* This code is, of course, no longer correct. */
-      if (copylen < TYPE_LENGTH (builtin_type_long))
-	{
-	  copyarg = value_cast(builtin_type_long, copyarg);
-          copylen = TYPE_LENGTH (builtin_type_long);
-        }
-      sp -= copylen;
-    }
-
-  /* Round down. */
-  sp = sp & ~7;
-  tempsp = sp;
-
-  /* Now write the arguments onto the stack, while writing FP arguments
-     into the FP registers. */
-  for (x = 0; x < nargs; x++)
-    {
-      int len = TYPE_LENGTH (check_typedef (VALUE_TYPE (args[x])));
-      value_ptr copyarg = args[x];
-      int copylen = len;
-
-      /* This code is, of course, no longer correct. */
-      if (copylen < TYPE_LENGTH (builtin_type_long))
-	{
-	  copyarg = value_cast(builtin_type_long, copyarg);
-          copylen = TYPE_LENGTH (builtin_type_long);
-        }
-      write_memory (tempsp, VALUE_CONTENTS (copyarg), copylen);
-      tempsp += copylen;
-      if (TYPE_CODE (VALUE_TYPE (args[x])) == TYPE_CODE_FLT && regnum < 32)
-	{
-	  /* This gets copied into a FP register. */
-	  int nextreg = regnum + 2;
-	  char *data = VALUE_CONTENTS (args[x]);
-	  /* Floats go into the lower half of a FP register pair; quads
-	     use 2 pairs. */
-
-	  if (len == 16)
-	    nextreg += 2;
-	  else if (len == 4)
-	    regnum++;
-
-	  write_register_bytes (REGISTER_BYTE (FP0_REGNUM + regnum),
-				data,
-				len);
-	  regnum = nextreg;
-	}
-    }
-  return sp;
-}
-
-/* Values <= 32 bytes are returned in o0-o3 (floating-point values are
-   returned in f0-f3). */
-void
-sparc64_extract_return_value (type, regbuf, valbuf, bitoffset)
-     struct type *type;
-     char *regbuf;
-     char *valbuf;
-     int bitoffset;
-{
-  int typelen = TYPE_LENGTH (type);
-  int regsize = REGISTER_RAW_SIZE (O0_REGNUM);
-
-  if (TYPE_CODE (type) == TYPE_CODE_FLT && SPARC_HAS_FPU)
-    {
-      memcpy (valbuf, &regbuf [REGISTER_BYTE (FP0_REGNUM)], typelen);
-      return;
-    }
-
-  if (TYPE_CODE (type) != TYPE_CODE_STRUCT
-      || (TYPE_LENGTH (type) > 32))
-    {
-      memcpy (valbuf,
-	      &regbuf [O0_REGNUM * regsize +
-		      (typelen >= regsize ? 0 : regsize - typelen)],
-	      typelen);
-      return;
-    }
-  else
-    {
-      char *o0 = &regbuf[O0_REGNUM * regsize];
-      char *f0 = &regbuf[FP0_REGNUM * regsize];
-      int x;
-
-      for (x = 0; x < TYPE_NFIELDS (type); x++)
-	{
-	  struct field *f = &TYPE_FIELDS(type)[x];
-	  /* FIXME: We may need to handle static fields here. */
-	  int whichreg = (f->loc.bitpos + bitoffset) / 32;
-	  int remainder = ((f->loc.bitpos + bitoffset) % 32) / 8;
-	  int where = (f->loc.bitpos + bitoffset) / 8;
-	  int size = TYPE_LENGTH (f->type);
-	  int typecode = TYPE_CODE (f->type);
-
-	  if (typecode == TYPE_CODE_STRUCT)
-	    {
-	      sparc64_extract_return_value (f->type,
-					    regbuf,
-					    valbuf,
-					    bitoffset + f->loc.bitpos);
-	    }
-	  else if (typecode == TYPE_CODE_FLT)
-	    {
-	      memcpy (valbuf + where, &f0[whichreg * 4] + remainder, size);
-	    }
-	  else
-	    {
-	      memcpy (valbuf + where, &o0[whichreg * 4] + remainder, size);
-	    }
-	}
-    }
-}
-#endif