-/* Parameters for execution on a Mitsubishi fr30 processor.
- Copyright 1996, 1997 Free Software Foundation, Inc.
+/* Parameters for execution on a Fujitsu FR30 processor.
+ Copyright 1999, 2000 Free Software Foundation, Inc.
-This file is part of GDB.
+ 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 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.
+ 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. */
+ 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. */
-/* Used by mswin. */
-#define TARGET_FR30 1
+#include "regcache.h"
-/* mvs_check TARGET_BYTE_ORDER BIG_ENDIAN */
-#define TARGET_BYTE_ORDER BIG_ENDIAN
+#define FR30_GENREGS 16
+#define FR30_DEDICATEDREGS 8
+#define FR30_REGSIZE 4 /* bytes */
-/* mvs_check REGISTER_NAMES */
-#define REGISTER_NAMES \
-{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
- "r8", "r9", "r10", "r11", "r12", "fp", "lr", "sp", \
- "psw", "cbr", "spi", "spu", "bpc", "pc", "accl", "acch", \
- /* "cond", "sm", "bsm", "ie", "bie", "bcarry", */ \
-}
-/* mvs_check NUM_REGS */
-#define NUM_REGS 24
-
-/* mvs_check REGISTER_SIZE */
-#define REGISTER_SIZE 4
-/* mvs_check MAX_REGISTER_RAW_SIZE */
-#define MAX_REGISTER_RAW_SIZE 4
-
-/* mvs_check *_REGNUM */
-#define R0_REGNUM 0
-#define STRUCT_RETURN_REGNUM 0
-#define ARG0_REGNUM 0
-#define ARGLAST_REGNUM 3
-#define V0_REGNUM 0
-#define V1_REGNUM 1
-#define FP_REGNUM 13
-#define RP_REGNUM 14
-#define SP_REGNUM 15
-#define PSW_REGNUM 16
-#define CBR_REGNUM 17
-#define SPI_REGNUM 18
-#define SPU_REGNUM 19
-#define BPC_REGNUM 20
-#define PC_REGNUM 21
-#define ACCL_REGNUM 22
-#define ACCH_REGNUM 23
-
-/* mvs_check REGISTER_BYTES */
-#define REGISTER_BYTES (NUM_REGS * 4)
-
-/* mvs_check REGISTER_VIRTUAL_TYPE */
-#define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int
-
-/* mvs_check REGISTER_BYTE */
-#define REGISTER_BYTE(REG) ((REG) * 4)
-/* mvs_check REGISTER_VIRTUAL_SIZE */
-#define REGISTER_VIRTUAL_SIZE(REG) 4
-/* mvs_check REGISTER_RAW_SIZE */
-#define REGISTER_RAW_SIZE(REG) 4
-
-/* mvs_check MAX_REGISTER_VIRTUAL_SIZE */
-#define MAX_REGISTER_VIRTUAL_SIZE 4
-
-/* mvs_check BREAKPOINT */
-#define BREAKPOINT {0x10, 0xf1}
-
-/* mvs_no_check FUNCTION_START_OFFSET */
-#define FUNCTION_START_OFFSET 0
-
-/* mvs_check DECR_PC_AFTER_BREAK */
-#define DECR_PC_AFTER_BREAK 0
+#define NUM_REGS (FR30_GENREGS + FR30_DEDICATEDREGS)
+#define REGISTER_BYTES ((FR30_GENREGS + FR30_DEDICATEDREGS)*FR30_REGSIZE)
-/* mvs_check INNER_THAN */
-#define INNER_THAN <
-
-/* mvs_check SAVED_PC_AFTER_CALL */
-#define SAVED_PC_AFTER_CALL(fi) read_register (RP_REGNUM)
-
-#ifdef __STDC__
-struct frame_info;
-struct frame_saved_regs;
-struct type;
-struct value;
-#endif
-
-/* Define other aspects of the stack frame.
- We keep the offsets of all saved registers, 'cause we need 'em a lot!
- We also keep the current size of the stack frame, and whether
- the frame pointer is valid (for frameless functions, and when we're
- still in the prologue of a function with a frame) */
-
-/* mvs_check EXTRA_FRAME_INFO */
-#define EXTRA_FRAME_INFO \
- struct frame_saved_regs fsr; \
- int framesize; \
- int using_frame_pointer;
+/* Index within `registers' of the first byte of the space for
+ register N. */
+#define REGISTER_BYTE(N) ((N) * FR30_REGSIZE)
+/* Initializer for an array of names of registers.
+ There should be NUM_REGS strings in this initializer. */
+#define REGISTER_NAMES \
+{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", \
+ "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
+ "pc", "ps", "tbr", "rp", "ssp", "usp", "mdh", "mdl" }
-extern void fr30_init_extra_frame_info PARAMS ((struct frame_info *fi));
-/* mvs_check INIT_EXTRA_FRAME_INFO */
-#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) fr30_init_extra_frame_info (fi)
-/* mvs_no_check INIT_FRAME_PC */
-#define INIT_FRAME_PC /* Not necessary */
-
-extern void
-fr30_frame_find_saved_regs PARAMS ((struct frame_info *fi,
- struct frame_saved_regs *regaddr));
-
-/* 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. */
+/* Offset from address of function to start of its code.
+ Zero on most machines. */
+#define FUNCTION_START_OFFSET 0
-/* mvs_check FRAME_FIND_SAVED_REGS */
-#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
- fr30_frame_find_saved_regs(frame_info, &(frame_saved_regs))
+/* Amount PC must be decremented by after a breakpoint.
+ This is often the number of bytes in BREAKPOINT
+ but not always. */
-extern CORE_ADDR fr30_frame_chain PARAMS ((struct frame_info *fi));
-/* mvs_check FRAME_CHAIN */
-#define FRAME_CHAIN(fi) fr30_frame_chain (fi)
+#define DECR_PC_AFTER_BREAK 0
-#define FRAME_CHAIN_VALID(fp, frame) generic_frame_chain_valid (fp, frame)
+/* Stack grows downward. */
+
+#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
+
+#define R0_REGNUM 0
+#define R1_REGNUM 1
+#define R2_REGNUM 2
+#define R3_REGNUM 3
+#define R4_REGNUM 4
+#define R5_REGNUM 5
+#define R6_REGNUM 6
+#define R7_REGNUM 7
+#define R8_REGNUM 8
+#define R9_REGNUM 9
+#define R10_REGNUM 10
+#define R11_REGNUM 11
+#define R12_REGNUM 12
+#define R13_REGNUM 13
+#define FP_REGNUM 14 /* Frame pointer */
+#define SP_REGNUM 15 /* Stack pointer */
+#define PC_REGNUM 16 /* Program counter */
+#define RP_REGNUM 19 /* Return pointer */
+
+#define FIRST_ARGREG R4_REGNUM /* first arg (or struct ret val addr) */
+#define LAST_ARGREG R7_REGNUM /* fourth (or third arg) */
+#define RETVAL_REG R4_REGNUM /* return vaue */
+
+/* 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 FR30_REGSIZE
+
+/* Number of bytes of storage in the actual machine representation
+ for register N. */
+#define REGISTER_RAW_SIZE(N) FR30_REGSIZE
+
+/* Largest value REGISTER_RAW_SIZE can have. */
+#define MAX_REGISTER_RAW_SIZE FR30_REGSIZE
+
+/* 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_VIRTUAL_SIZE can have. */
+#define MAX_REGISTER_VIRTUAL_SIZE FR30_REGSIZE
+
+extern void fr30_pop_frame (void);
+#define POP_FRAME fr30_pop_frame()
+
+#define USE_GENERIC_DUMMY_FRAMES 1
+#define CALL_DUMMY {0}
+#define CALL_DUMMY_START_OFFSET (0)
+#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
+#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
+#define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
+#define CALL_DUMMY_ADDRESS() entry_point_address ()
+#define PUSH_RETURN_ADDRESS(PC, SP) (write_register(RP_REGNUM, CALL_DUMMY_ADDRESS()), SP)
+#define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
-extern CORE_ADDR fr30_find_callers_reg PARAMS ((struct frame_info *fi,
- int regnum));
-extern CORE_ADDR fr30_frame_saved_pc PARAMS((struct frame_info *));
-/* mvs_check FRAME_SAVED_PC */
-#define FRAME_SAVED_PC(fi) fr30_frame_saved_pc (fi)
+/* Number of bytes at start of arglist that are not really args. */
+#define FRAME_ARGS_SKIP 0
-/* mvs_check EXTRACT_RETURN_VALUE */
-#define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \
- memcpy ((VALBUF), \
- (char *)(REGBUF) + REGISTER_BYTE (V0_REGNUM) + \
- ((TYPE_LENGTH (TYPE) > 4 ? 8 : 4) - TYPE_LENGTH (TYPE)), \
- TYPE_LENGTH (TYPE))
+/* Return the GDB type object for the "standard" data type
+ of data in register N. */
+#define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int
-/* mvs_check STORE_RETURN_VALUE */
-#define STORE_RETURN_VALUE(TYPE, VALBUF) \
- write_register_bytes(REGISTER_BYTE (V0_REGNUM) + \
- ((TYPE_LENGTH (TYPE) > 4 ? 8:4) - TYPE_LENGTH (TYPE)),\
- (VALBUF), TYPE_LENGTH (TYPE));
+/* 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) \
+ memcpy (VALBUF, REGBUF + REGISTER_BYTE(RETVAL_REG) + \
+ (TYPE_LENGTH(TYPE) < 4 ? 4 - TYPE_LENGTH(TYPE) : 0), TYPE_LENGTH (TYPE))
-extern CORE_ADDR fr30_skip_prologue PARAMS ((CORE_ADDR pc));
-/* mvs_check SKIP_PROLOGUE */
-#define SKIP_PROLOGUE(pc) pc = fr30_skip_prologue (pc)
+/* 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) \
+ extract_address (REGBUF + REGISTER_BYTE (RETVAL_REG), \
+ REGISTER_RAW_SIZE (RETVAL_REG))
-/* mvs_no_check FRAME_ARGS_SKIP */
-#define FRAME_ARGS_SKIP 0
+#define STORE_STRUCT_RETURN(ADDR, SP) \
+ { write_register (RETVAL_REG, (ADDR)); }
-/* mvs_no_check FRAME_ARGS_ADDRESS */
#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
-/* mvs_no_check FRAME_LOCALS_ADDRESS */
#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
-/* mvs_no_check FRAME_NUM_ARGS */
-#define FRAME_NUM_ARGS(val, fi) ((val) = -1)
-
-#define COERCE_FLOAT_TO_DOUBLE 1
-
-#define TARGET_WRITE_SP fr30_write_sp
+/* Return number of args passed to a frame.
+ Can return -1, meaning no way to tell. */
+#define FRAME_NUM_ARGS(fi) (-1)
+/* Forward decls for prototypes */
+struct frame_info;
+struct frame_saved_regs;
+struct type;
+struct value;
+#define EXTRA_FRAME_INFO \
+ struct frame_saved_regs fsr; \
+ int framesize; \
+ int frameoffset; \
+ int framereg;
+extern CORE_ADDR fr30_frame_chain (struct frame_info *fi);
+#define FRAME_CHAIN(fi) fr30_frame_chain (fi)
+extern CORE_ADDR fr30_frame_saved_pc (struct frame_info *);
+#define FRAME_SAVED_PC(fi) (fr30_frame_saved_pc (fi))
-/* struct passing and returning stuff */
-#define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) \
- write_register (0, STRUCT_ADDR)
+#define SAVED_PC_AFTER_CALL(fi) read_register (RP_REGNUM)
-#define USE_STRUCT_CONVENTION(GCC_P, TYPE) \
- (TYPE_LENGTH (TYPE) > 8)
+extern CORE_ADDR fr30_skip_prologue (CORE_ADDR pc);
+#define SKIP_PROLOGUE(pc) (fr30_skip_prologue (pc))
-#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
- extract_address (REGBUF + REGISTER_BYTE (V0_REGNUM), \
- REGISTER_RAW_SIZE (V0_REGNUM))
+/* Write into appropriate registers a function return value of type
+ TYPE, given in virtual format. VALBUF is in the target byte order;
+ it's typically the VALUE_CONTENTS of some struct value, and those
+ are in the target's byte order. */
+extern void fr30_store_return_value (struct type *type, char *valbuf);
-#define REG_STRUCT_HAS_ADDR(gcc_p,type) (TYPE_LENGTH (type) > 8)
+#define STORE_RETURN_VALUE(TYPE,VALBUF) \
+ (fr30_store_return_value ((TYPE), (VALBUF)))
+/* 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(fi, regaddr) regaddr = fi->fsr
-/* generic dummy frame stuff */
+/* Use INT #BREAKPOINT_INTNUM instruction for breakpoint */
+#define FR30_BREAKOP 0x1f /* opcode, type D instruction */
+#define BREAKPOINT_INTNUM 9 /* one of the reserved traps */
+#define BREAKPOINT {FR30_BREAKOP, BREAKPOINT_INTNUM}
-#define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
-#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP)
+/* Define this for Wingdb */
+#define TARGET_FR30
+/* Define other aspects of the stack frame. */
-/* target-specific dummy_frame stuff */
+/* An expression that tells us whether the function invocation represented
+ by FI does not have a frame on the stack associated with it. */
+extern int fr30_frameless_function_invocation (struct frame_info *frame);
+#define FRAMELESS_FUNCTION_INVOCATION(FI) (fr30_frameless_function_invocation (FI));
-extern struct frame_info *fr30_pop_frame PARAMS ((struct frame_info *frame));
-/* mvs_check POP_FRAME */
-#define POP_FRAME fr30_pop_frame (get_current_frame ())
+extern void fr30_init_extra_frame_info (struct frame_info *fi);
+#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) fr30_init_extra_frame_info (fi)
-/* mvs_no_check STACK_ALIGN */
-/* #define STACK_ALIGN(x) ((x + 3) & ~3) */
+#define FRAME_CHAIN_VALID(FP, FI) generic_file_frame_chain_valid (FP, FI)
-extern CORE_ADDR fr30_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR));
-extern CORE_ADDR fr30_push_arguments PARAMS ((int nargs,
- struct value **args,
- CORE_ADDR sp,
- unsigned char struct_return,
- CORE_ADDR struct_addr));
+extern CORE_ADDR
+fr30_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
+ int struct_return, CORE_ADDR struct_addr);
+#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
+ (fr30_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR))
+#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP)
+/* Fujitsu's ABI requires all structs to be passed using a pointer.
+ That is obviously not very efficient, so I am leaving the definitions
+ to make gdb work with GCC style struct passing, in case we decide
+ to go for better performance, rather than for compatibility with
+ Fujitsu (just change STRUCT_ALWAYS_BY_ADDR to 0) */
-/* mvs_no_check PUSH_ARGUMENTS */
-#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
- (SP) = fr30_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)
+#define STRUCT_ALWAYS_BY_ADDR 1
-#define PUSH_RETURN_ADDRESS(PC, SP) fr30_push_return_address (PC, SP)
+#if(STRUCT_ALWAYS_BY_ADDR)
+#define REG_STRUCT_HAS_ADDR(gcc_p,type) 1
+#else
+/* more standard GCC (optimized) */
+#define REG_STRUCT_HAS_ADDR(gcc_p,type) \
+ ((TYPE_LENGTH(type) > 4) && (TYPE_LENGTH(type) & 0x3))
+#endif
+/* alway return struct by value by input pointer */
+#define USE_STRUCT_CONVENTION(GCC_P, TYPE) 1
-/* override the standard get_saved_register function with
- one that takes account of generic CALL_DUMMY frames */
-#define GET_SAVED_REGISTER
+/* The stack should always be aligned on a four-word boundary. */
+#define STACK_ALIGN(len) (((len) + 3) & ~3)
-#define USE_GENERIC_DUMMY_FRAMES
-#define CALL_DUMMY {0}
-#define CALL_DUMMY_LENGTH (0)
-#define CALL_DUMMY_START_OFFSET (0)
-#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
-#define FIX_CALL_DUMMY(DUMMY1, STARTADDR, FUNADDR, NARGS, ARGS, TYPE, GCCP)
-#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
-#define CALL_DUMMY_ADDRESS() entry_point_address ()
+/* I think the comment about this in value_arg_coerce is wrong; this
+ should be true on any system where you can rely on the prototyping
+ information. When this is true, value_arg_coerce will promote
+ floats to doubles iff the function is not prototyped. */
+#define COERCE_FLOAT_TO_DOUBLE(formal, actual) (1)
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