+extern CORE_ADDR sparc_extract_struct_value_address (char *);
+
+/* 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(FORMAL, ACTUAL) (1)
+
+/* Stack must be aligned on 64-bit boundaries when synthesizing
+ function calls (128-bit for sparc64). */
+
+#define STACK_ALIGN(ADDR) sparc32_stack_align (ADDR)
+extern CORE_ADDR sparc32_stack_align (CORE_ADDR addr);
+
+/* The Sparc returns long doubles on the stack. */
+
+#define RETURN_VALUE_ON_STACK(TYPE) \
+ (TYPE_CODE(TYPE) == TYPE_CODE_FLT \
+ && TYPE_LENGTH(TYPE) > 8)
+
+/* 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) \
+ sparc_reg_struct_has_addr (GCC_P, TYPE)
+extern int sparc_reg_struct_has_addr (int, struct type *);
+
+/* Is the prologue at PC frameless? */
+#define PROLOGUE_FRAMELESS_P(PC) sparc_prologue_frameless_p (PC)
+extern int sparc_prologue_frameless_p (CORE_ADDR);
+
+#endif /* GDB_MULTI_ARCH */
+
+#if defined (GDB_MULTI_ARCH) && (GDB_MULTI_ARCH > 0)
+/*
+ * The following defines should ONLY appear for MULTI_ARCH.
+ */
+
+/* Multi-arch the nPC and Y registers. */
+#define Y_REGNUM (sparc_y_regnum ())
+extern int sparc_npc_regnum (void);
+extern int sparc_y_regnum (void);
+
+#endif /* GDB_MULTI_ARCH */
+
+/* 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 (CORE_ADDR);
+
+/* 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
+
+/* 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))
+
+/* Sequence of bytes for breakpoint instruction (ta 1). */
+
+#define BREAKPOINT {0x91, 0xd0, 0x20, 0x01}
+
+/* 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 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 I7_REGNUM 31 /* Last local reg saved on stack frame */
+#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 FPS_REGNUM 70 /* Floating point status register */
+#define CPS_REGNUM 71 /* Coprocessor status register */
+
+/* Writing to %g0 is a noop (not an error or exception or anything like
+ that, however). */
+
+#define CANNOT_STORE_REGISTER(regno) ((regno) == G0_REGNUM)
+
+/*
+ * FRAME_CHAIN and FRAME_INFO definitions, collected here for convenience.
+ */
+
+#if !defined (GDB_MULTI_ARCH) || (GDB_MULTI_ARCH == 0)
+/*
+ * The following defines must go away for MULTI_ARCH.
+ */