[deliverable/binutils-gdb.git] / gdb / config / d30v / tm-d30v.h

/* Target-specific definition for the Mitsubishi D30V
   Copyright 1997, 1998, 1999, 2000 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.  */

#ifndef TM_D30V_H
#define TM_D30V_H

#include "regcache.h"

/* Offset from address of function to start of its code.
   Zero on most machines.  */

#define FUNCTION_START_OFFSET 0

/* these are the addresses the D30V-EVA board maps data */
/* and instruction memory to. */

#define DMEM_START	0x20000000
#define IMEM_START	0x00000000	/* was 0x10000000 */
#define STACK_START	0x20007ffe

/* Forward decls for prototypes */
struct frame_info;
struct frame_saved_regs;
struct type;
struct value;

/* Advance PC across any function entry prologue instructions
   to reach some "real" code.  */

extern CORE_ADDR d30v_skip_prologue (CORE_ADDR);
#define SKIP_PROLOGUE(ip) (d30v_skip_prologue (ip))


/* Stack grows downward.  */
#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))

/* for a breakpoint, use "dbt || nop" */
#define BREAKPOINT {0x00, 0xb0, 0x00, 0x00,\
		    0x00, 0xf0, 0x00, 0x00}

/* If your kernel resets the pc after the trap happens you may need to
   define this before including this file.  */
#define DECR_PC_AFTER_BREAK 0

#define REGISTER_NAMES \
{   "r0",  "r1",  "r2",  "r3",  "r4",  "r5",  "r6",  "r7",	\
    "r8",  "r9",  "r10", "r11", "r12", "r13", "r14", "r15",	\
    "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",	\
    "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",	\
    "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39",	\
    "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47",	\
    "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55",	\
    "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63",	\
    "spi", "spu", \
    "psw", "bpsw", "pc", "bpc", "dpsw", "dpc", "cr6", "rpt_c",	\
    "rpt_s", "rpt_e", "mod_s", "mod_e", "cr12", "cr13", "iba", "eit_vb",\
    "int_s", "int_m", "a0", "a1" \
    }

#define NUM_REGS 86

/* 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 R0_REGNUM	0
#define FP_REGNUM	61
#define LR_REGNUM 	62
#define SP_REGNUM 	63
#define SPI_REGNUM	64	/* Interrupt stack pointer */
#define SPU_REGNUM	65	/* User stack pointer */
#define CREGS_START	66

#define PSW_REGNUM 	(CREGS_START + 0)	/* psw, bpsw, or dpsw??? */
#define     PSW_SM (((unsigned long)0x80000000) >> 0)	/* Stack mode: 0/SPI */
							/*             1/SPU */
#define     PSW_EA (((unsigned long)0x80000000) >> 2)	/* Execution status */
#define     PSW_DB (((unsigned long)0x80000000) >> 3)	/* Debug mode */
#define     PSW_DS (((unsigned long)0x80000000) >> 4)	/* Debug EIT status */
#define     PSW_IE (((unsigned long)0x80000000) >> 5)	/* Interrupt enable */
#define     PSW_RP (((unsigned long)0x80000000) >> 6)	/* Repeat enable */
#define     PSW_MD (((unsigned long)0x80000000) >> 7)	/* Modulo enable */
#define     PSW_F0 (((unsigned long)0x80000000) >> 17)	/* F0 flag */
#define     PSW_F1 (((unsigned long)0x80000000) >> 19)	/* F1 flag */
#define     PSW_F2 (((unsigned long)0x80000000) >> 21)	/* F2 flag */
#define     PSW_F3 (((unsigned long)0x80000000) >> 23)	/* F3 flag */
#define     PSW_S  (((unsigned long)0x80000000) >> 25)	/* Saturation flag */
#define     PSW_V  (((unsigned long)0x80000000) >> 27)	/* Overflow flag */
#define     PSW_VA (((unsigned long)0x80000000) >> 29)	/* Accum. overflow */
#define     PSW_C  (((unsigned long)0x80000000) >> 31)	/* Carry/Borrow flag */

#define BPSW_REGNUM	(CREGS_START + 1)	/* Backup PSW (on interrupt) */
#define PC_REGNUM 	(CREGS_START + 2)	/* pc, bpc, or dpc??? */
#define BPC_REGNUM 	(CREGS_START + 3)	/* Backup PC (on interrupt) */
#define DPSW_REGNUM	(CREGS_START + 4)	/* Backup PSW (on debug trap) */
#define DPC_REGNUM 	(CREGS_START + 5)	/* Backup PC (on debug trap) */
#define RPT_C_REGNUM	(CREGS_START + 7)	/* Loop count */
#define RPT_S_REGNUM	(CREGS_START + 8)	/* Loop start address */
#define RPT_E_REGNUM	(CREGS_START + 9)	/* Loop end address */
#define MOD_S_REGNUM	(CREGS_START + 10)
#define MOD_E_REGNUM	(CREGS_START + 11)
#define IBA_REGNUM	(CREGS_START + 14)	/* Instruction break address */
#define EIT_VB_REGNUM	(CREGS_START + 15)	/* Vector base address */
#define INT_S_REGNUM	(CREGS_START + 16)	/* Interrupt status */
#define INT_M_REGNUM	(CREGS_START + 17)	/* Interrupt mask */
#define A0_REGNUM 	84
#define A1_REGNUM 	85

/* Say how much memory is needed to store a copy of the register set */
#define REGISTER_BYTES    ((NUM_REGS - 2) * 4 + 2 * 8)

/* Index within `registers' of the first byte of the space for
   register N.  */

#define REGISTER_BYTE(N)  \
( ((N) >= A0_REGNUM) ? ( ((N) - A0_REGNUM) * 8 + A0_REGNUM * 4 ) : ((N) * 4) )

/* Number of bytes of storage in the actual machine representation
   for register N.  */

#define REGISTER_RAW_SIZE(N) ( ((N) >= A0_REGNUM) ? 8 : 4 )

/* Number of bytes of storage in the program's representation
   for register N.  */
#define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N)

/* 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) < A0_REGNUM ) ? builtin_type_long : builtin_type_long_long)

/* Writing to r0 is a noop (not an error or exception or anything like
   that, however).  */

#define CANNOT_STORE_REGISTER(regno) ((regno) == R0_REGNUM)

void d30v_do_registers_info (int regnum, int fpregs);

#define DO_REGISTERS_INFO d30v_do_registers_info

/* Store the address of the place in which to copy the structure the
   subroutine will return.  This is called from call_function. 

   We store structs through a pointer passed in R2 */

#define STORE_STRUCT_RETURN(ADDR, SP) \
    { write_register (2, (ADDR));  }


/* Write into appropriate registers a function return value
   of type TYPE, given in virtual format.  

   Things always get returned in R2/R3 */

#define STORE_RETURN_VALUE(TYPE,VALBUF) \
  write_register_bytes (REGISTER_BYTE(2), VALBUF, TYPE_LENGTH (TYPE))


/* 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 DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (((CORE_ADDR *)(REGBUF))[2])
\f

/* Define other aspects of the stack frame. 
   we keep a copy of the worked out return pc lying around, since it
   is a useful bit of info */

#define EXTRA_FRAME_INFO \
    CORE_ADDR return_pc; \
    CORE_ADDR dummy; \
    int frameless; \
    int size;

#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
    d30v_init_extra_frame_info(fromleaf, fi)

extern void d30v_init_extra_frame_info (int fromleaf, struct frame_info *fi);

/* 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_look_for_prologue (FI))

CORE_ADDR d30v_frame_chain (struct frame_info *frame);
#define FRAME_CHAIN(FRAME)       d30v_frame_chain(FRAME)
extern int d30v_frame_chain_valid (CORE_ADDR, struct frame_info *);
#define FRAME_CHAIN_VALID(chain, thisframe) d30v_frame_chain_valid (chain, thisframe)
#define FRAME_SAVED_PC(FRAME)    ((FRAME)->return_pc)
#define FRAME_ARGS_ADDRESS(fi)   (fi)->frame
#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame

void d30v_init_frame_pc (int fromleaf, struct frame_info *prev);
#define INIT_FRAME_PC_FIRST(fromleaf, prev)	d30v_init_frame_pc(fromleaf, prev)
#define INIT_FRAME_PC(fromleaf, prev)	/* nada */

/* Immediately after a function call, return the saved pc.  We can't */
/* use frame->return_pc beause that is determined by reading R62 off the */
/* stack and that may not be written yet. */

#define SAVED_PC_AFTER_CALL(frame) (read_register(LR_REGNUM))

/* 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 */

#define FRAME_NUM_ARGS(fi) (-1)

/* Return number of bytes at start of arglist that are not really args.  */

#define FRAME_ARGS_SKIP 0


/* Put here the code to store, 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.  */

#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs)	    \
   d30v_frame_find_saved_regs(frame_info, &(frame_saved_regs))

extern void d30v_frame_find_saved_regs (struct frame_info *,
					struct frame_saved_regs *);

/* DUMMY FRAMES.  Need these to support inferior function calls.
   They work like this on D30V:
   First we set a breakpoint at 0 or __start.
   Then we push all the registers onto the stack.
   Then put the function arguments in the proper registers and set r13
   to our breakpoint address.
   Finally call the function directly.
   When it hits the breakpoint, clear the break point and pop the old
   register contents off the stack. */

#define CALL_DUMMY		{ 0 }
#define PUSH_DUMMY_FRAME
#define CALL_DUMMY_START_OFFSET	0
#define CALL_DUMMY_LOCATION	AT_ENTRY_POINT
#define CALL_DUMMY_BREAKPOINT_OFFSET (0)

extern CORE_ADDR d30v_call_dummy_address (void);
#define CALL_DUMMY_ADDRESS() d30v_call_dummy_address()

#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
sp = d30v_fix_call_dummy (dummyname, pc, fun, nargs, args, type, gcc_p)

#define PC_IN_CALL_DUMMY(pc, sp, frame_address)	( pc == IMEM_START + 4 )

extern CORE_ADDR d30v_fix_call_dummy (char *, CORE_ADDR, CORE_ADDR,
				      int, struct value **,
				      struct type *, int);
#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
  (d30v_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr)))
extern CORE_ADDR d30v_push_arguments (int, struct value **, CORE_ADDR, int,
				      CORE_ADDR);


/* 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 DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
d30v_extract_return_value(TYPE, REGBUF, VALBUF)
extern void d30v_extract_return_value (struct type *, char *, char *);


/* Discard from the stack the innermost frame,
   restoring all saved registers.  */
#define POP_FRAME d30v_pop_frame();
extern void d30v_pop_frame (void);

#define REGISTER_SIZE 4

/* Need to handle SP special, as we need to select between spu and spi.  */
#if 0				/* XXX until the simulator is fixed */
#define TARGET_READ_SP() ((read_register (PSW_REGNUM) & PSW_SM) \
			  ? read_register (SPU_REGNUM) \
			  : read_register (SPI_REGNUM))

#define TARGET_WRITE_SP(val) ((read_register (PSW_REGNUM) & PSW_SM) \
			  ? write_register (SPU_REGNUM, (val)) \
			  : write_register (SPI_REGNUM, (val)))
#endif

#define STACK_ALIGN(len)	(((len) + 7 ) & ~7)

/* Turn this on to cause remote-sim.c to use sim_set/clear_breakpoint. */

#define SIM_HAS_BREAKPOINTS

#endif /* TM_D30V_H */
Commit	Line	Data
c906108c	1	/* Target-specific definition for the Mitsubishi D30V
b6ba6518	2	Copyright 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
c906108c	3
c5aa993b	4	This file is part of GDB.
c906108c	5
c5aa993b JM	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2 of the License, or
	9	(at your option) any later version.
c906108c	10
c5aa993b JM	11	This program is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
c906108c	15
c5aa993b JM	16	You should have received a copy of the GNU General Public License
	17	along with this program; if not, write to the Free Software
	18	Foundation, Inc., 59 Temple Place - Suite 330,
	19	Boston, MA 02111-1307, USA. */
c906108c SS	20
	21	#ifndef TM_D30V_H
	22	#define TM_D30V_H
	23
f88e2c52 AC	24	#include "regcache.h"
f88e2c52 AC	25
c906108c SS	26	/* Offset from address of function to start of its code.
	27	Zero on most machines. */
	28
	29	#define FUNCTION_START_OFFSET 0
	30
	31	/* these are the addresses the D30V-EVA board maps data */
	32	/* and instruction memory to. */
	33
	34	#define DMEM_START 0x20000000
c5aa993b	35	#define IMEM_START 0x00000000 /* was 0x10000000 */
c906108c SS	36	#define STACK_START 0x20007ffe
c906108c SS	37
104c1213	38	/* Forward decls for prototypes */
c906108c	39	struct frame_info;
c5aa993b	40	struct frame_saved_regs;
c906108c SS	41	struct type;
c906108c SS	42	struct value;
c906108c SS	43
	44	/* Advance PC across any function entry prologue instructions
	45	to reach some "real" code. */
	46
a14ed312	47	extern CORE_ADDR d30v_skip_prologue (CORE_ADDR);
b83266a0	48	#define SKIP_PROLOGUE(ip) (d30v_skip_prologue (ip))
c906108c SS	49
	50
	51	/* Stack grows downward. */
	52	#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
	53
	54	/* for a breakpoint, use "dbt \|\| nop" */
	55	#define BREAKPOINT {0x00, 0xb0, 0x00, 0x00,\
	56	0x00, 0xf0, 0x00, 0x00}
	57
	58	/* If your kernel resets the pc after the trap happens you may need to
	59	define this before including this file. */
	60	#define DECR_PC_AFTER_BREAK 0
	61
	62	#define REGISTER_NAMES \
	63	{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
	64	"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
	65	"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
	66	"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \
	67	"r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39", \
	68	"r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47", \
	69	"r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55", \
	70	"r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63", \
	71	"spi", "spu", \
	72	"psw", "bpsw", "pc", "bpc", "dpsw", "dpc", "cr6", "rpt_c", \
	73	"rpt_s", "rpt_e", "mod_s", "mod_e", "cr12", "cr13", "iba", "eit_vb",\
	74	"int_s", "int_m", "a0", "a1" \
	75	}
	76
	77	#define NUM_REGS 86
	78
	79	/* Register numbers of various important registers.
	80	Note that some of these values are "real" register numbers,
	81	and correspond to the general registers of the machine,
	82	and some are "phony" register numbers which are too large
	83	to be actual register numbers as far as the user is concerned
	84	but do serve to get the desired values when passed to read_register. */
	85
	86	#define R0_REGNUM 0
	87	#define FP_REGNUM 61
	88	#define LR_REGNUM 62
	89	#define SP_REGNUM 63
	90	#define SPI_REGNUM 64 /* Interrupt stack pointer */
	91	#define SPU_REGNUM 65 /* User stack pointer */
	92	#define CREGS_START 66
	93
c5aa993b	94	#define PSW_REGNUM (CREGS_START + 0) /* psw, bpsw, or dpsw??? */
c906108c	95	#define PSW_SM (((unsigned long)0x80000000) >> 0) /* Stack mode: 0/SPI */
c5aa993b	96	/* 1/SPU */
c906108c SS	97	#define PSW_EA (((unsigned long)0x80000000) >> 2) /* Execution status */
	98	#define PSW_DB (((unsigned long)0x80000000) >> 3) /* Debug mode */
	99	#define PSW_DS (((unsigned long)0x80000000) >> 4) /* Debug EIT status */
	100	#define PSW_IE (((unsigned long)0x80000000) >> 5) /* Interrupt enable */
	101	#define PSW_RP (((unsigned long)0x80000000) >> 6) /* Repeat enable */
	102	#define PSW_MD (((unsigned long)0x80000000) >> 7) /* Modulo enable */
	103	#define PSW_F0 (((unsigned long)0x80000000) >> 17) /* F0 flag */
	104	#define PSW_F1 (((unsigned long)0x80000000) >> 19) /* F1 flag */
	105	#define PSW_F2 (((unsigned long)0x80000000) >> 21) /* F2 flag */
	106	#define PSW_F3 (((unsigned long)0x80000000) >> 23) /* F3 flag */
	107	#define PSW_S (((unsigned long)0x80000000) >> 25) /* Saturation flag */
	108	#define PSW_V (((unsigned long)0x80000000) >> 27) /* Overflow flag */
	109	#define PSW_VA (((unsigned long)0x80000000) >> 29) /* Accum. overflow */
	110	#define PSW_C (((unsigned long)0x80000000) >> 31) /* Carry/Borrow flag */
	111
c5aa993b JM	112	#define BPSW_REGNUM (CREGS_START + 1) /* Backup PSW (on interrupt) */
	113	#define PC_REGNUM (CREGS_START + 2) /* pc, bpc, or dpc??? */
	114	#define BPC_REGNUM (CREGS_START + 3) /* Backup PC (on interrupt) */
	115	#define DPSW_REGNUM (CREGS_START + 4) /* Backup PSW (on debug trap) */
	116	#define DPC_REGNUM (CREGS_START + 5) /* Backup PC (on debug trap) */
	117	#define RPT_C_REGNUM (CREGS_START + 7) /* Loop count */
	118	#define RPT_S_REGNUM (CREGS_START + 8) /* Loop start address */
	119	#define RPT_E_REGNUM (CREGS_START + 9) /* Loop end address */
c906108c SS	120	#define MOD_S_REGNUM (CREGS_START + 10)
c906108c SS	121	#define MOD_E_REGNUM (CREGS_START + 11)
c5aa993b JM	122	#define IBA_REGNUM (CREGS_START + 14) /* Instruction break address */
	123	#define EIT_VB_REGNUM (CREGS_START + 15) /* Vector base address */
	124	#define INT_S_REGNUM (CREGS_START + 16) /* Interrupt status */
	125	#define INT_M_REGNUM (CREGS_START + 17) /* Interrupt mask */
c906108c SS	126	#define A0_REGNUM 84
	127	#define A1_REGNUM 85
	128
	129	/* Say how much memory is needed to store a copy of the register set */
c5aa993b	130	#define REGISTER_BYTES ((NUM_REGS - 2) * 4 + 2 * 8)
c906108c SS	131
	132	/* Index within `registers' of the first byte of the space for
	133	register N. */
	134
	135	#define REGISTER_BYTE(N) \
	136	( ((N) >= A0_REGNUM) ? ( ((N) - A0_REGNUM) * 8 + A0_REGNUM * 4 ) : ((N) * 4) )
	137
	138	/* Number of bytes of storage in the actual machine representation
	139	for register N. */
	140
	141	#define REGISTER_RAW_SIZE(N) ( ((N) >= A0_REGNUM) ? 8 : 4 )
	142
	143	/* Number of bytes of storage in the program's representation
c5aa993b	144	for register N. */
c906108c SS	145	#define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N)
	146
	147	/* Largest value REGISTER_RAW_SIZE can have. */
	148
	149	#define MAX_REGISTER_RAW_SIZE 8
	150
	151	/* Largest value REGISTER_VIRTUAL_SIZE can have. */
	152
	153	#define MAX_REGISTER_VIRTUAL_SIZE 8
	154
	155	/* Return the GDB type object for the "standard" data type
	156	of data in register N. */
	157
	158	#define REGISTER_VIRTUAL_TYPE(N) \
	159	( ((N) < A0_REGNUM ) ? builtin_type_long : builtin_type_long_long)
	160
	161	/* Writing to r0 is a noop (not an error or exception or anything like
	162	that, however). */
	163
	164	#define CANNOT_STORE_REGISTER(regno) ((regno) == R0_REGNUM)
	165
a14ed312	166	void d30v_do_registers_info (int regnum, int fpregs);
c906108c SS	167
	168	#define DO_REGISTERS_INFO d30v_do_registers_info
	169
	170	/* Store the address of the place in which to copy the structure the
	171	subroutine will return. This is called from call_function.
	172
	173	We store structs through a pointer passed in R2 */
	174
	175	#define STORE_STRUCT_RETURN(ADDR, SP) \
	176	{ write_register (2, (ADDR)); }
	177
	178
	179	/* Write into appropriate registers a function return value
	180	of type TYPE, given in virtual format.
	181
	182	Things always get returned in R2/R3 */
	183
	184	#define STORE_RETURN_VALUE(TYPE,VALBUF) \
	185	write_register_bytes (REGISTER_BYTE(2), VALBUF, TYPE_LENGTH (TYPE))
	186
	187
	188	/* Extract from an array REGBUF containing the (raw) register state
	189	the address in which a function should return its structure value,
	190	as a CORE_ADDR (or an expression that can be used as one). */
26e9b323	191	#define DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (((CORE_ADDR *)(REGBUF))[2])
c906108c SS	192	\f
	193
	194	/* Define other aspects of the stack frame.
	195	we keep a copy of the worked out return pc lying around, since it
	196	is a useful bit of info */
	197
	198	#define EXTRA_FRAME_INFO \
	199	CORE_ADDR return_pc; \
	200	CORE_ADDR dummy; \
	201	int frameless; \
	202	int size;
	203
	204	#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
c5aa993b	205	d30v_init_extra_frame_info(fromleaf, fi)
c906108c	206
a14ed312	207	extern void d30v_init_extra_frame_info (int fromleaf, struct frame_info *fi);
c906108c SS	208
	209	/* A macro that tells us whether the function invocation represented
	210	by FI does not have a frame on the stack associated with it. If it
	211	does not, FRAMELESS is set to 1, else 0. */
	212
392a587b JM	213	#define FRAMELESS_FUNCTION_INVOCATION(FI) \
392a587b JM	214	(frameless_look_for_prologue (FI))
c906108c	215
d4f3574e	216	CORE_ADDR d30v_frame_chain (struct frame_info *frame);
c906108c	217	#define FRAME_CHAIN(FRAME) d30v_frame_chain(FRAME)
a14ed312	218	extern int d30v_frame_chain_valid (CORE_ADDR, struct frame_info *);
c906108c	219	#define FRAME_CHAIN_VALID(chain, thisframe) d30v_frame_chain_valid (chain, thisframe)
c5aa993b	220	#define FRAME_SAVED_PC(FRAME) ((FRAME)->return_pc)
c906108c SS	221	#define FRAME_ARGS_ADDRESS(fi) (fi)->frame
	222	#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame
	223
d4f3574e	224	void d30v_init_frame_pc (int fromleaf, struct frame_info *prev);
c906108c SS	225	#define INIT_FRAME_PC_FIRST(fromleaf, prev) d30v_init_frame_pc(fromleaf, prev)
	226	#define INIT_FRAME_PC(fromleaf, prev) /* nada */
	227
	228	/* Immediately after a function call, return the saved pc. We can't */
	229	/* use frame->return_pc beause that is determined by reading R62 off the */
	230	/* stack and that may not be written yet. */
	231
	232	#define SAVED_PC_AFTER_CALL(frame) (read_register(LR_REGNUM))
c5aa993b	233
c906108c SS	234	/* Set VAL to the number of args passed to frame described by FI.
	235	Can set VAL to -1, meaning no way to tell. */
	236	/* We can't tell how many args there are */
	237
392a587b	238	#define FRAME_NUM_ARGS(fi) (-1)
c906108c SS	239
	240	/* Return number of bytes at start of arglist that are not really args. */
	241
	242	#define FRAME_ARGS_SKIP 0
	243
	244
	245	/* Put here the code to store, into a struct frame_saved_regs,
	246	the addresses of the saved registers of frame described by FRAME_INFO.
	247	This includes special registers such as pc and fp saved in special
	248	ways in the stack frame. sp is even more special:
	249	the address we return for it IS the sp for the next frame. */
	250
	251	#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
	252	d30v_frame_find_saved_regs(frame_info, &(frame_saved_regs))
	253
a14ed312 KB	254	extern void d30v_frame_find_saved_regs (struct frame_info *,
a14ed312 KB	255	struct frame_saved_regs *);
c906108c	256
c906108c SS	257	/* DUMMY FRAMES. Need these to support inferior function calls.
	258	They work like this on D30V:
	259	First we set a breakpoint at 0 or __start.
	260	Then we push all the registers onto the stack.
	261	Then put the function arguments in the proper registers and set r13
	262	to our breakpoint address.
	263	Finally call the function directly.
	264	When it hits the breakpoint, clear the break point and pop the old
	265	register contents off the stack. */
	266
c5aa993b	267	#define CALL_DUMMY { 0 }
c906108c	268	#define PUSH_DUMMY_FRAME
c5aa993b	269	#define CALL_DUMMY_START_OFFSET 0
c906108c SS	270	#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
	271	#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
	272
a14ed312	273	extern CORE_ADDR d30v_call_dummy_address (void);
c906108c SS	274	#define CALL_DUMMY_ADDRESS() d30v_call_dummy_address()
	275
	276	#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
	277	sp = d30v_fix_call_dummy (dummyname, pc, fun, nargs, args, type, gcc_p)
	278
	279	#define PC_IN_CALL_DUMMY(pc, sp, frame_address) ( pc == IMEM_START + 4 )
	280
a14ed312 KB	281	extern CORE_ADDR d30v_fix_call_dummy (char *, CORE_ADDR, CORE_ADDR,
	282	int, struct value **,
	283	struct type *, int);
c906108c	284	#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
392a587b	285	(d30v_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr)))
a14ed312 KB	286	extern CORE_ADDR d30v_push_arguments (int, struct value **, CORE_ADDR, int,
a14ed312 KB	287	CORE_ADDR);
c906108c SS	288
	289
	290	/* Extract from an array REGBUF containing the (raw) register state
	291	a function return value of type TYPE, and copy that, in virtual format,
	292	into VALBUF. */
	293
26e9b323	294	#define DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
c906108c	295	d30v_extract_return_value(TYPE, REGBUF, VALBUF)
a14ed312	296	extern void d30v_extract_return_value (struct type , char , char *);
c906108c SS	297
	298
	299	/* Discard from the stack the innermost frame,
	300	restoring all saved registers. */
	301	#define POP_FRAME d30v_pop_frame();
a14ed312	302	extern void d30v_pop_frame (void);
c906108c SS	303
	304	#define REGISTER_SIZE 4
	305
	306	/* Need to handle SP special, as we need to select between spu and spi. */
	307	#if 0 /* XXX until the simulator is fixed */
	308	#define TARGET_READ_SP() ((read_register (PSW_REGNUM) & PSW_SM) \
	309	? read_register (SPU_REGNUM) \
	310	: read_register (SPI_REGNUM))
	311
	312	#define TARGET_WRITE_SP(val) ((read_register (PSW_REGNUM) & PSW_SM) \
	313	? write_register (SPU_REGNUM, (val)) \
	314	: write_register (SPI_REGNUM, (val)))
	315	#endif
	316
	317	#define STACK_ALIGN(len) (((len) + 7 ) & ~7)
	318
	319	/* Turn this on to cause remote-sim.c to use sim_set/clear_breakpoint. */
	320
	321	#define SIM_HAS_BREAKPOINTS
	322
	323	#endif /* TM_D30V_H */