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Diffstat (limited to 'gdb/config/fr30/tm-fr30.h')
| -rw-r--r-- | gdb/config/fr30/tm-fr30.h | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/gdb/config/fr30/tm-fr30.h b/gdb/config/fr30/tm-fr30.h new file mode 100644 index 00000000000..ea32792dcc4 --- /dev/null +++ b/gdb/config/fr30/tm-fr30.h @@ -0,0 +1,232 @@ +/* Parameters for execution on a Fujitsu FR30 processor. + +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 +#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(numargs, fi) (numargs = -1) + +#ifdef __STDC__ /* Forward decls for prototypes */ +struct frame_info; +struct frame_saved_regs; +struct type; +struct value; +#endif + +#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) pc = fr30_skip_prologue (pc) + +/* Write into appropriate registers a function return value + of type TYPE, given in virtual format. */ + +#define STORE_RETURN_VALUE(TYPE,VALBUF) \ + write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE)) + +/* 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 + +/* 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) \ +{ \ + CORE_ADDR func_start, after_prologue; \ + func_start = (get_pc_function_start ((FI)->pc) + \ + FUNCTION_START_OFFSET); \ + after_prologue = func_start; \ + SKIP_PROLOGUE (after_prologue); \ + (FRAMELESS) = (after_prologue == func_start); \ +} + +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_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) \ + (SP) = 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) + +/* 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 |