| /* Parameters for a Sun 386i target machine, for GDB, the GNU debugger. |
| Copyright 1986, 1987, 1991, 1992, 1993 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. */ |
| |
| #if !defined (TM_SUN386_H) |
| #define TM_SUN386_H 1 |
| |
| #include "i386/tm-i386.h" |
| |
| #ifndef sun386 |
| #define sun386 |
| #endif |
| #define SUNOS4 |
| #define USE_MACHINE_REG_H |
| |
| /* Perhaps some day this will work even without the following #define */ |
| #define COFF_ENCAPSULATE |
| |
| #ifdef COFF_ENCAPSULATE |
| /* Avoid conflicts between our include files and <sys/exec.h> |
| (maybe not needed anymore). */ |
| #define _EXEC_ |
| #endif |
| |
| /* sun386 ptrace seems unable to change the frame pointer */ |
| #define PTRACE_FP_BUG |
| |
| /* Address of end of stack space. */ |
| |
| #define STACK_END_ADDR 0xfc000000 |
| |
| /* Number of machine registers */ |
| |
| #undef NUM_REGS |
| #define NUM_REGS 35 |
| |
| /* Initializer for an array of names of registers. There should be NUM_REGS |
| strings in this initializer. The order of the first 8 registers must match |
| the compiler's numbering scheme (which is the same as the 386 scheme) also, |
| this table must match regmap in i386-pinsn.c. */ |
| |
| #undef REGISTER_NAMES |
| #define REGISTER_NAMES { "gs", "fs", "es", "ds", \ |
| "edi", "esi", "ebp", "esp", \ |
| "ebx", "edx", "ecx", "eax", \ |
| "retaddr", "trapnum", "errcode", "ip", \ |
| "cs", "ps", "sp", "ss", \ |
| "fst0", "fst1", "fst2", "fst3", \ |
| "fst4", "fst5", "fst6", "fst7", \ |
| "fctrl", "fstat", "ftag", "fip", \ |
| "fcs", "fopoff", "fopsel" \ |
| } |
| |
| /* 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. */ |
| |
| #undef FP_REGNUM |
| #define FP_REGNUM 6 /* (ebp) Contains address of executing stack frame */ |
| #undef SP_REGNUM |
| #define SP_REGNUM 18 /* (usp) Contains address of top of stack */ |
| #undef PS_REGNUM |
| #define PS_REGNUM 17 /* (ps) Contains processor status */ |
| #undef PC_REGNUM |
| #define PC_REGNUM 15 /* (eip) Contains program counter */ |
| #undef FP0_REGNUM |
| #define FP0_REGNUM 20 /* Floating point register 0 */ |
| #undef FPC_REGNUM |
| #define FPC_REGNUM 28 /* 80387 control register */ |
| |
| /* Total amount of space needed to store our copies of the machine's |
| register state, the array `registers'. */ |
| |
| #undef REGISTER_BYTES |
| #define REGISTER_BYTES (20*4+8*10+7*4) |
| |
| /* Index within `registers' of the first byte of the space for |
| register N. */ |
| |
| #undef REGISTER_BYTE |
| #define REGISTER_BYTE(N) \ |
| ((N) >= FPC_REGNUM ? (((N) - FPC_REGNUM) * 4) + 160 \ |
| : (N) >= FP0_REGNUM ? (((N) - FP0_REGNUM) * 10) + 80 \ |
| : (N) * 4) |
| |
| /* Number of bytes of storage in the actual machine representation |
| for register N. */ |
| |
| #undef REGISTER_RAW_SIZE |
| #define REGISTER_RAW_SIZE(N) (((unsigned)((N) - FP0_REGNUM)) < 8 ? 10 : 4) |
| |
| /* Number of bytes of storage in the program's representation |
| for register N. */ |
| |
| #undef REGISTER_VIRTUAL_SIZE |
| #define REGISTER_VIRTUAL_SIZE(N) (((unsigned)((N) - FP0_REGNUM)) < 8 ? 8 : 4) |
| |
| /* Nonzero if register N requires conversion |
| from raw format to virtual format. */ |
| |
| #undef REGISTER_CONVERTIBLE |
| #define REGISTER_CONVERTIBLE(N) (((unsigned)((N) - FP0_REGNUM)) < 8) |
| |
| /* Convert data from raw format for register REGNUM in buffer FROM |
| to virtual format with type TYPE in buffer TO. */ |
| |
| #undef REGISTER_CONVERT_TO_VIRTUAL |
| #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \ |
| { \ |
| double val; \ |
| i387_to_double ((FROM), (char *)&val); \ |
| store_floating ((TO), TYPE_LENGTH (TYPE), val); \ |
| } |
| extern void |
| i387_to_double PARAMS ((char *, char *)); |
| |
| /* Convert data from virtual format with type TYPE in buffer FROM |
| to raw format for register REGNUM in buffer TO. */ |
| |
| #undef REGISTER_CONVERT_TO_RAW |
| #define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \ |
| { \ |
| double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \ |
| double_to_i387((char *)&val, (TO)); \ |
| } |
| extern void |
| double_to_i387 PARAMS ((char *, char *)); |
| |
| /* Return the GDB type object for the "standard" data type |
| of data in register N. */ |
| |
| #undef REGISTER_VIRTUAL_TYPE |
| #define REGISTER_VIRTUAL_TYPE(N) \ |
| (((unsigned)((N) - FP0_REGNUM)) < 8 ? builtin_type_double : 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. */ |
| |
| #undef EXTRACT_RETURN_VALUE |
| #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ |
| memcpy (VALBUF, REGBUF + REGISTER_BYTE (TYPE_CODE (TYPE) == TYPE_CODE_FLT ? FP0_REGNUM : 11), TYPE_LENGTH (TYPE)) |
| |
| /* Write into appropriate registers a function return value |
| of type TYPE, given in virtual format. */ |
| |
| #undef STORE_RETURN_VALUE |
| #define STORE_RETURN_VALUE(TYPE,VALBUF) \ |
| write_register_bytes (REGISTER_BYTE (TYPE_CODE (TYPE) == TYPE_CODE_FLT ? FP0_REGNUM : 11), VALBUF, TYPE_LENGTH (TYPE)) |
| |
| /* Describe the pointer in each stack frame to the previous stack frame |
| (its caller). */ |
| |
| /* FRAME_CHAIN takes a frame's nominal address |
| and produces the frame's chain-pointer. */ |
| |
| #undef FRAME_CHAIN |
| #define FRAME_CHAIN(thisframe) \ |
| (!inside_entry_file ((thisframe)->pc) ? \ |
| read_memory_integer ((thisframe)->frame, 4) :\ |
| 0) |
| |
| /* 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. */ |
| |
| #undef FRAMELESS_FUNCTION_INVOCATION |
| #define FRAMELESS_FUNCTION_INVOCATION(FI) \ |
| (frameless_look_for_prologue (FI)) |
| |
| #undef FRAME_SAVED_PC |
| #define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4)) |
| |
| /* Insert the specified number of args and function address |
| into a call sequence of the above form stored at DUMMYNAME. */ |
| |
| #undef FIX_CALL_DUMMY |
| #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \ |
| { \ |
| *(int *)((char *)(dummyname) + 1) = (int)(fun) - (pc) - 5; \ |
| } |
| |
| #endif /* !defined (TM_SUN386_H) */ |