| /* Parameters for execution on a Fujitsu FR30 processor. |
| Copyright 1999, 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. */ |
| |
| #define FR30_GENREGS 16 |
| #define FR30_DEDICATEDREGS 8 |
| #define FR30_REGSIZE 4 /* bytes */ |
| |
| #define NUM_REGS (FR30_GENREGS + FR30_DEDICATEDREGS) |
| #define REGISTER_BYTES ((FR30_GENREGS + FR30_DEDICATEDREGS)*FR30_REGSIZE) |
| |
| /* 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" } |
| |
| /* Offset from address of function to start of its code. |
| Zero on most machines. */ |
| #define FUNCTION_START_OFFSET 0 |
| |
| /* 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 |
| |
| /* Stack grows downward. */ |
| |
| #define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) |
| |
| #define TARGET_BYTE_ORDER BIG_ENDIAN |
| |
| #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 PARAMS ((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 () |
| |
| /* Number of bytes at start of arglist that are not really args. */ |
| #define FRAME_ARGS_SKIP 0 |
| |
| /* Return the GDB type object for the "standard" data type |
| of data in register N. */ |
| #define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int |
| |
| /* 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)) |
| |
| /* 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)) |
| |
| #define STORE_STRUCT_RETURN(ADDR, SP) \ |
| { write_register (RETVAL_REG, (ADDR)); } |
| |
| #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame) |
| #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) |
| |
| /* 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 PARAMS ((struct frame_info * fi)); |
| #define FRAME_CHAIN(fi) fr30_frame_chain (fi) |
| |
| extern CORE_ADDR fr30_frame_saved_pc PARAMS ((struct frame_info *)); |
| #define FRAME_SAVED_PC(fi) (fr30_frame_saved_pc (fi)) |
| |
| #define SAVED_PC_AFTER_CALL(fi) read_register (RP_REGNUM) |
| |
| extern CORE_ADDR fr30_skip_prologue PARAMS ((CORE_ADDR pc)); |
| #define SKIP_PROLOGUE(pc) (fr30_skip_prologue (pc)) |
| |
| /* 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 PARAMS ((struct type * type, char *valbuf)); |
| |
| #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 |
| |
| /* 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 this for Wingdb */ |
| #define TARGET_FR30 |
| |
| /* IEEE format floating point */ |
| #define IEEE_FLOAT (1) |
| |
| /* Define other aspects of the stack frame. */ |
| |
| /* 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 PARAMS ((struct frame_info * frame)); |
| #define FRAMELESS_FUNCTION_INVOCATION(FI) (fr30_frameless_function_invocation (FI)); |
| |
| extern void fr30_init_extra_frame_info PARAMS ((struct frame_info * fi)); |
| #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) fr30_init_extra_frame_info (fi) |
| |
| #define FRAME_CHAIN_VALID(FP, FI) generic_file_frame_chain_valid (FP, FI) |
| |
| extern CORE_ADDR |
| fr30_push_arguments PARAMS ((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) */ |
| |
| #define STRUCT_ALWAYS_BY_ADDR 1 |
| |
| #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 |
| |
| /* The stack should always be aligned on a four-word boundary. */ |
| #define STACK_ALIGN(len) (((len) + 3) & ~3) |
| |
| /* 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) |