Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 584 insertions, 0 deletions

diff --git a/gdb/config/sparc/tm-sparc.h b/gdb/config/sparc/tm-sparc.h
new file mode 100644
index 0000000..ecbe9e2
--- /dev/null
+++ b/gdb/config/sparc/tm-sparc.h
@@ -0,0 +1,584 @@
+/* Target machine sub-parameters for SPARC, for GDB, the GNU debugger.
+   This is included by other tm-*.h files to define SPARC cpu-related info.
+   Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994
+   Free Software Foundation, Inc.
+   Contributed by Michael Tiemann (tiemann@mcc.com)
+
+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.  */
+
+#ifdef __STDC__
+struct frame_info;
+struct type;
+struct value;
+#endif
+
+#define TARGET_BYTE_ORDER BIG_ENDIAN
+
+/* Floating point is IEEE compatible.  */
+#define IEEE_FLOAT
+
+/* If an argument is declared "register", Sun cc will keep it in a register,
+   never saving it onto the stack.  So we better not believe the "p" symbol
+   descriptor stab.  */
+
+#define USE_REGISTER_NOT_ARG
+
+/* When passing a structure to a function, Sun cc passes the address
+   not the structure itself.  It (under SunOS4) creates two symbols,
+   which we need to combine to a LOC_REGPARM.  Gcc version two (as of
+   1.92) behaves like sun cc.  REG_STRUCT_HAS_ADDR is smart enough to
+   distinguish between Sun cc, gcc version 1 and gcc version 2.  */
+
+#define REG_STRUCT_HAS_ADDR(gcc_p,type) (gcc_p != 1)
+
+/* Sun /bin/cc gets this right as of SunOS 4.1.x.  We need to define
+   BELIEVE_PCC_PROMOTION to get this right now that the code which
+   detects gcc2_compiled. is broken.  This loses for SunOS 4.0.x and
+   earlier.  */
+
+#define BELIEVE_PCC_PROMOTION 1
+
+/* For acc, there's no need to correct LBRAC entries by guessing how
+   they should work.  In fact, this is harmful because the LBRAC
+   entries now all appear at the end of the function, not intermixed
+   with the SLINE entries.  n_opt_found detects acc for Solaris binaries;
+   function_stab_type detects acc for SunOS4 binaries.
+
+   For binary from SunOS4 /bin/cc, need to correct LBRAC's.
+
+   For gcc, like acc, don't correct.  */
+
+#define	SUN_FIXED_LBRAC_BUG \
+  (n_opt_found \
+   || function_stab_type == N_STSYM \
+   || function_stab_type == N_GSYM \
+   || processing_gcc_compilation)
+
+/* Do variables in the debug stabs occur after the N_LBRAC or before it?
+   acc: after, gcc: before, SunOS4 /bin/cc: before.  */
+
+#define VARIABLES_INSIDE_BLOCK(desc, gcc_p) \
+  (!(gcc_p) \
+   && (n_opt_found \
+       || function_stab_type == N_STSYM \
+       || function_stab_type == N_GSYM))
+
+/* Offset from address of function to start of its code.
+   Zero on most machines.  */
+
+#define FUNCTION_START_OFFSET 0
+
+/* Advance PC across any function entry prologue instructions
+   to reach some "real" code.  SKIP_PROLOGUE_FRAMELESS_P advances
+   the PC past some of the prologue, but stops as soon as it
+   knows that the function has a frame.  Its result is equal
+   to its input PC if the function is frameless, unequal otherwise.  */
+
+#define SKIP_PROLOGUE(pc) \
+  { pc = skip_prologue (pc, 0); }
+#define SKIP_PROLOGUE_FRAMELESS_P(pc) \
+  { pc = skip_prologue (pc, 1); }
+extern CORE_ADDR skip_prologue PARAMS ((CORE_ADDR, int));
+
+/* Immediately after a function call, return the saved pc.
+   Can't go through the frames for this because on some machines
+   the new frame is not set up until the new function executes
+   some instructions.  */
+
+/* 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.  */
+
+#define PC_ADJUST(pc) sparc_pc_adjust(pc)
+extern CORE_ADDR sparc_pc_adjust PARAMS ((CORE_ADDR));
+
+#define SAVED_PC_AFTER_CALL(frame) PC_ADJUST (read_register (RP_REGNUM))
+
+/* Stack grows downward.  */
+
+#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
+
+/* Stack must be aligned on 64-bit boundaries when synthesizing
+   function calls. */
+
+#define STACK_ALIGN(ADDR) (((ADDR) + 7) & -8)
+
+/* Sequence of bytes for breakpoint instruction (ta 1). */
+
+#define BREAKPOINT {0x91, 0xd0, 0x20, 0x01}
+
+/* Amount PC must be decremented by after a breakpoint.
+   This is often the number of bytes in BREAKPOINT
+   but not always.  */
+
+#define DECR_PC_AFTER_BREAK 0
+
+/* Say how long (ordinary) registers are.  This is a piece of bogosity
+   used in push_word and a few other places; REGISTER_RAW_SIZE is the
+   real way to know how big a register is.  */
+
+#define REGISTER_SIZE 4
+
+/* Number of machine registers */
+
+#define NUM_REGS 72
+
+/* Initializer for an array of names of registers.
+   There should be NUM_REGS strings in this initializer.  */
+
+#define REGISTER_NAMES  \
+{ "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",	\
+  "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",	\
+  "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",	\
+  "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",	\
+								\
+  "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",	\
+  "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",	\
+  "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",	\
+  "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",	\
+                                                                \
+  "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" }
+
+/* Register numbers of various important registers.
+   Note that some of these values are "real" register numbers,
+   and correspond to the general registers of the machine,
+   and some are "phony" register numbers which are too large
+   to be actual register numbers as far as the user is concerned
+   but do serve to get the desired values when passed to read_register.  */
+
+#define	G0_REGNUM 0             /* %g0 */
+#define	G1_REGNUM 1		/* %g1 */
+#define O0_REGNUM 8		/* %o0 */
+#define	SP_REGNUM 14		/* Contains address of top of stack, \
+				   which is also the bottom of the frame.  */
+#define	RP_REGNUM 15		/* Contains return address value, *before* \
+				   any windows get switched.  */
+#define	O7_REGNUM 15		/* Last local reg not saved on stack frame */
+#define	L0_REGNUM 16		/* First local reg that's saved on stack frame
+				   rather than in machine registers */
+#define	I0_REGNUM 24		/* %i0 */
+#define	FP_REGNUM 30		/* Contains address of executing stack frame */
+#define	I7_REGNUM 31		/* Last local reg saved on stack frame */
+#define	FP0_REGNUM 32		/* Floating point register 0 */
+#define	Y_REGNUM 64		/* Temp register for multiplication, etc.  */
+#define	PS_REGNUM 65		/* Contains processor status */
+#define PS_FLAG_CARRY 0x100000	/* Carry bit in PS */
+#define	WIM_REGNUM 66		/* Window Invalid Mask (not really supported) */
+#define	TBR_REGNUM 67		/* Trap Base Register (not really supported) */
+#define	PC_REGNUM 68		/* Contains program counter */
+#define	NPC_REGNUM 69           /* Contains next PC */
+#define	FPS_REGNUM 70		/* Floating point status register */
+#define	CPS_REGNUM 71		/* Coprocessor status register */
+
+/* Total amount of space needed to store our copies of the machine's
+   register state, the array `registers'.  On the sparc, `registers'
+   contains the ins and locals, even though they are saved on the
+   stack rather than with the other registers, and this causes hair
+   and confusion in places like pop_frame.  It might be
+   better to remove the ins and locals from `registers', make sure
+   that get_saved_register can get them from the stack (even in the
+   innermost frame), and make this the way to access them.  For the
+   frame pointer we would do that via TARGET_READ_FP.  On the other hand,
+   that is likely to be confusing or worse for flat frames.  */
+
+#define REGISTER_BYTES (32*4+32*4+8*4)
+
+/* Index within `registers' of the first byte of the space for
+   register N.  */
+/* ?? */
+#define REGISTER_BYTE(N)  ((N)*4)
+
+/* We need to override GET_SAVED_REGISTER so that we can deal with the way
+   outs change into ins in different frames.  HAVE_REGISTER_WINDOWS can't
+   deal with this case and also handle flat frames at the same time.  */
+
+#define GET_SAVED_REGISTER 1
+
+/* Number of bytes of storage in the actual machine representation
+   for register N.  */
+
+/* On the SPARC, all regs are 4 bytes.  */
+
+#define REGISTER_RAW_SIZE(N) (4)
+
+/* Number of bytes of storage in the program's representation
+   for register N.  */
+
+/* On the SPARC, all regs are 4 bytes.  */
+
+#define REGISTER_VIRTUAL_SIZE(N) (4)
+
+/* Largest value REGISTER_RAW_SIZE can have.  */
+
+#define MAX_REGISTER_RAW_SIZE 8
+
+/* Largest value REGISTER_VIRTUAL_SIZE can have.  */
+
+#define MAX_REGISTER_VIRTUAL_SIZE 8
+
+/* Return the GDB type object for the "standard" data type
+   of data in register N.  */
+
+#define REGISTER_VIRTUAL_TYPE(N) \
+ ((N) < 32 ? builtin_type_int : (N) < 64 ? builtin_type_float : \
+  builtin_type_int)
+
+/* Writing to %g0 is a noop (not an error or exception or anything like
+   that, however).  */
+
+#define CANNOT_STORE_REGISTER(regno) ((regno) == G0_REGNUM)
+
+/* Store the address of the place in which to copy the structure the
+   subroutine will return.  This is called from call_function_by_hand. 
+   The ultimate mystery is, tho, what is the value "16"?  */
+
+#define STORE_STRUCT_RETURN(ADDR, SP) \
+  { char val[4]; \
+    store_unsigned_integer (val, 4, (ADDR)); \
+    write_memory ((SP)+(16*4), val, 4); }
+
+/* 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.  */
+
+#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
+  sparc_extract_return_value(TYPE, REGBUF, VALBUF)
+extern void
+sparc_extract_return_value PARAMS ((struct type *, char [], char *));
+
+/* Write into appropriate registers a function return value
+   of type TYPE, given in virtual format.  */
+#define STORE_RETURN_VALUE(TYPE,VALBUF) \
+  sparc_store_return_value(TYPE, VALBUF)
+extern void sparc_store_return_value PARAMS ((struct type *, char *));
+
+/* Extract from an array REGBUF containing the (raw) register state
+   the address in which a function should return its structure value,
+   as a CORE_ADDR (or an expression that can be used as one).  */
+
+#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
+  (sparc_extract_struct_value_address (REGBUF))
+
+extern CORE_ADDR
+sparc_extract_struct_value_address PARAMS ((char [REGISTER_BYTES]));
+
+
+/* Describe the pointer in each stack frame to the previous stack frame
+   (its caller).  */
+
+/* FRAME_CHAIN takes a frame's nominal address
+   and produces the frame's chain-pointer. */
+
+/* In the case of the Sun 4, the frame-chain's nominal address
+   is held in the frame pointer register.
+
+   On the Sun4, the frame (in %fp) is %sp for the previous frame.
+   From the previous frame's %sp, we can find the previous frame's
+   %fp: it is in the save area just above the previous frame's %sp.
+
+   If we are setting up an arbitrary frame, we'll need to know where
+   it ends.  Hence the following.  This part of the frame cache
+   structure should be checked before it is assumed that this frame's
+   bottom is in the stack pointer.
+
+   If there isn't a frame below this one, the bottom of this frame is
+   in the stack pointer.
+
+   If there is a frame below this one, and the frame pointers are
+   identical, it's a leaf frame and the bottoms are the same also.
+
+   Otherwise the bottom of this frame is the top of the next frame.
+
+   The bottom field is misnamed, since it might imply that memory from
+   bottom to frame contains this frame.  That need not be true if
+   stack frames are allocated in different segments (e.g. some on a
+   stack, some on a heap in the data segment).
+
+   GCC 2.6 and later can generate ``flat register window'' code that
+   makes frames by explicitly saving those registers that need to be
+   saved.  %i7 is used as the frame pointer, and the frame is laid out so
+   that flat and non-flat calls can be intermixed freely within a
+   program.  Unfortunately for GDB, this means it must detect and record
+   the flatness of frames.
+
+   Since the prologue in a flat frame also tells us where fp and pc
+   have been stashed (the frame is of variable size, so their location
+   is not fixed), it's convenient to record them in the frame info.  */
+
+#define EXTRA_FRAME_INFO  \
+  CORE_ADDR bottom;  \
+  int in_prologue; \
+  int flat;  \
+  /* Following fields only relevant for flat frames.  */ \
+  CORE_ADDR pc_addr;  \
+  CORE_ADDR fp_addr;  \
+  /* Add this to ->frame to get the value of the stack pointer at the */ \
+  /* time of the register saves.  */ \
+  int sp_offset;
+
+#define FRAME_INIT_SAVED_REGS(fp) /*no-op*/
+
+#define INIT_EXTRA_FRAME_INFO(fromleaf, fci) \
+  sparc_init_extra_frame_info (fromleaf, fci)
+extern void sparc_init_extra_frame_info PARAMS((int, struct frame_info *));
+
+#define	PRINT_EXTRA_FRAME_INFO(fi) \
+  { \
+    if ((fi) && (fi)->flat) \
+      printf_filtered (" flat, pc saved at 0x%x, fp saved at 0x%x\n", \
+                       (fi)->pc_addr, (fi)->fp_addr); \
+  }
+
+#define FRAME_CHAIN(thisframe) (sparc_frame_chain (thisframe))
+extern CORE_ADDR sparc_frame_chain PARAMS ((struct frame_info *));
+
+/* INIT_EXTRA_FRAME_INFO needs the PC to detect flat frames.  */
+
+#define	INIT_FRAME_PC(fromleaf, prev) /* nothing */
+#define INIT_FRAME_PC_FIRST(fromleaf, prev) \
+  (prev)->pc = ((fromleaf) ? SAVED_PC_AFTER_CALL ((prev)->next) : \
+	      (prev)->next ? FRAME_SAVED_PC ((prev)->next) : read_pc ());
+
+/* Define other aspects of the stack frame.  */
+
+/* A macro that tells us whether the function invocation represented
+   by FI does not have a frame on the stack associated with it.  If it
+   does not, FRAMELESS is set to 1, else 0.  */
+#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
+  (FRAMELESS) = frameless_look_for_prologue(FI)
+
+/* The location of I0 w.r.t SP.  This is actually dependent on how the system's
+   window overflow/underflow routines are written.  Most vendors save the L regs
+   followed by the I regs (at the higher address).  Some vendors get it wrong.
+ */
+
+#define	FRAME_SAVED_L0	0
+#define	FRAME_SAVED_I0	(8 * REGISTER_RAW_SIZE (L0_REGNUM))
+
+/* Where is the PC for a specific frame */
+
+#define FRAME_SAVED_PC(FRAME) sparc_frame_saved_pc (FRAME)
+extern CORE_ADDR sparc_frame_saved_pc PARAMS ((struct frame_info *));
+
+/* If the argument is on the stack, it will be here.  */
+#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
+
+#define FRAME_STRUCT_ARGS_ADDRESS(fi) ((fi)->frame)
+
+#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
+
+/* Set VAL to the number of args passed to frame described by FI.
+   Can set VAL to -1, meaning no way to tell.  */
+
+/* We can't tell how many args there are
+   now that the C compiler delays popping them.  */
+#define FRAME_NUM_ARGS(val,fi) (val = -1)
+
+/* Return number of bytes at start of arglist that are not really args.  */
+
+#define FRAME_ARGS_SKIP 68
+
+/* Things needed for making the inferior call functions.  */
+/*
+ * First of all, let me give my opinion of what the DUMMY_FRAME
+ * actually looks like.
+ *
+ *               |                                 |
+ *               |                                 |
+ *               + - - - - - - - - - - - - - - - - +<-- fp (level 0)
+ *               |                                 |
+ *               |                                 |
+ *               |                                 |
+ *               |                                 |
+ *               |  Frame of innermost program     |
+ *               |           function              |
+ *               |                                 |
+ *               |                                 |
+ *               |                                 |
+ *               |                                 |
+ *               |                                 |
+ *               |---------------------------------|<-- sp (level 0), fp (c)
+ *               |                                 |
+ *     DUMMY     |             fp0-31              |
+ *               |                                 |
+ *               |             ------              |<-- fp - 0x80
+ *     FRAME     |              g0-7               |<-- fp - 0xa0
+ *               |              i0-7               |<-- fp - 0xc0
+ *               |             other               |<-- fp - 0xe0
+ *               |               ?                 |
+ *               |               ?                 |
+ *               |---------------------------------|<-- sp' = fp - 0x140
+ *               |                                 |
+ * xcution start |                                 |
+ * sp' + 0x94 -->|        CALL_DUMMY (x code)      |
+ *               |                                 |
+ *               |                                 |
+ *               |---------------------------------|<-- sp'' = fp - 0x200
+ *               |  align sp to 8 byte boundary    |
+ *               |     ==> args to fn <==          |
+ *  Room for     |                                 |
+ * i & l's + agg | CALL_DUMMY_STACK_ADJUST = 0x0x44|
+ *               |---------------------------------|<-- final sp (variable)
+ *               |                                 |
+ *               |   Where function called will    |
+ *               |           build frame.          |
+ *               |                                 |
+ *               |                                 |
+ *
+ *   I understand everything in this picture except what the space
+ * between fp - 0xe0 and fp - 0x140 is used for.  Oh, and I don't
+ * understand why there's a large chunk of CALL_DUMMY that never gets
+ * executed (its function is superceeded by PUSH_DUMMY_FRAME; they
+ * are designed to do the same thing).
+ *
+ *   PUSH_DUMMY_FRAME saves the registers above sp' and pushes the
+ * register file stack down one.
+ *
+ *   call_function then writes CALL_DUMMY, pushes the args onto the
+ * stack, and adjusts the stack pointer.
+ *
+ *   run_stack_dummy then starts execution (in the middle of
+ * CALL_DUMMY, as directed by call_function).
+ */
+
+/* Push an empty stack frame, to record the current PC, etc.  */
+
+#define PUSH_DUMMY_FRAME	sparc_push_dummy_frame ()
+#define POP_FRAME	sparc_pop_frame ()
+
+void sparc_push_dummy_frame PARAMS ((void)), sparc_pop_frame PARAMS ((void));
+
+#ifndef CALL_DUMMY
+/* This sequence of words is the instructions
+
+   0:   bc 10 00 01     mov  %g1, %fp
+   4:   9d e3 80 00     save  %sp, %g0, %sp
+   8:   bc 10 00 02     mov  %g2, %fp
+   c:   be 10 00 03     mov  %g3, %i7
+  10:   da 03 a0 58     ld  [ %sp + 0x58 ], %o5
+  14:   d8 03 a0 54     ld  [ %sp + 0x54 ], %o4
+  18:   d6 03 a0 50     ld  [ %sp + 0x50 ], %o3
+  1c:   d4 03 a0 4c     ld  [ %sp + 0x4c ], %o2
+  20:   d2 03 a0 48     ld  [ %sp + 0x48 ], %o1
+  24:   40 00 00 00     call  <fun>
+  28:   d0 03 a0 44     ld  [ %sp + 0x44 ], %o0
+  2c:   01 00 00 00     nop 
+  30:   91 d0 20 01     ta  1
+  34:   01 00 00 00     nop
+
+   NOTES:
+	* the first four instructions are necessary only on the simulator.
+	* this is a multiple of 8 (not only 4) bytes.
+	* the `call' insn is a relative, not an absolute call.
+	* the `nop' at the end is needed to keep the trap from
+	  clobbering things (if NPC pointed to garbage instead).
+*/
+
+#define CALL_DUMMY { 0xbc100001, 0x9de38000, 0xbc100002, 0xbe100003,	\
+		     0xda03a058, 0xd803a054, 0xd603a050, 0xd403a04c,	\
+		     0xd203a048, 0x40000000, 0xd003a044, 0x01000000,	\
+		     0x91d02001, 0x01000000 }
+
+
+/* Size of the call dummy in bytes. */
+
+#define CALL_DUMMY_LENGTH 0x38
+
+/* Offset within call dummy of first instruction to execute. */
+
+#define CALL_DUMMY_START_OFFSET 0
+
+/* Offset within CALL_DUMMY of the 'call' instruction. */
+
+#define CALL_DUMMY_CALL_OFFSET (CALL_DUMMY_START_OFFSET + 0x24)
+
+/* Offset within CALL_DUMMY of the 'ta 1' instruction. */
+
+#define CALL_DUMMY_BREAKPOINT_OFFSET (CALL_DUMMY_START_OFFSET + 0x30)
+
+#define CALL_DUMMY_STACK_ADJUST 68
+
+#endif
+/* Insert the specified number of args and function address
+   into a call sequence of the above form stored at DUMMYNAME.  */
+
+#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
+ sparc_fix_call_dummy (dummyname, pc, fun, type, gcc_p)
+void sparc_fix_call_dummy PARAMS ((char *dummy, CORE_ADDR pc, CORE_ADDR fun,
+				   struct type *value_type, int using_gcc));
+
+/* The Sparc returns long doubles on the stack.  */
+
+#define RETURN_VALUE_ON_STACK(TYPE) \
+  (TYPE_CODE(TYPE) == TYPE_CODE_FLT \
+   && TYPE_LENGTH(TYPE) > 8)
+
+/* Sparc has no reliable single step ptrace call */
+
+#define SOFTWARE_SINGLE_STEP_P 1
+extern void sparc_software_single_step PARAMS ((unsigned int, int));
+#define SOFTWARE_SINGLE_STEP(sig,bp_p) sparc_software_single_step (sig,bp_p)
+
+/* We need more arguments in a frame specification for the
+   "frame" or "info frame" command.  */
+
+#define SETUP_ARBITRARY_FRAME(argc, argv) setup_arbitrary_frame (argc, argv)
+extern struct frame_info *setup_arbitrary_frame PARAMS ((int, CORE_ADDR *));
+
+/* To print every pair of float registers as a double, we use this hook.
+   We also print the condition code registers in a readable format
+   (FIXME: can expand this to all control regs).  */
+
+#undef 	PRINT_REGISTER_HOOK
+#define	PRINT_REGISTER_HOOK(regno)	\
+  sparc_print_register_hook (regno)
+extern void sparc_print_register_hook PARAMS ((int regno));
+
+
+/* Optimization for storing registers to the inferior.  The hook
+   DO_DEFERRED_STORES
+   actually executes any deferred stores.  It is called any time
+   we are going to proceed the child, or read its registers.
+   The hook CLEAR_DEFERRED_STORES is called when we want to throw
+   away the inferior process, e.g. when it dies or we kill it.
+   FIXME, this does not handle remote debugging cleanly.  */
+
+extern int deferred_stores;
+#define	DO_DEFERRED_STORES	\
+  if (deferred_stores)		\
+    target_store_registers (-2);
+#define	CLEAR_DEFERRED_STORES	\
+  deferred_stores = 0;
+
+/* If the current gcc for for this target does not produce correct debugging
+   information for float parameters, both prototyped and unprototyped, then
+   define this macro.  This forces gdb to  always assume that floats are
+   passed as doubles and then converted in the callee. */
+
+#define COERCE_FLOAT_TO_DOUBLE 1
+
+/* Select the sparc disassembler */
+
+#define TM_PRINT_INSN_MACH bfd_mach_sparc
+
+/* Arguments smaller than an int must promoted to ints when synthesizing
+   function calls.  */
+
+#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
+    sp = sparc_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr))
+extern CORE_ADDR
+sparc_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int, CORE_ADDR));