/* Target-dependent definitions for Intel x86 running DJGPP. Copyright 1995, 1996, 1997 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. */ #include "i386/tm-i386v.h" /* Number of machine registers. */ #undef NUM_FREGS #define NUM_FREGS 15 #undef NUM_REGS #define NUM_REGS (16+NUM_FREGS) /* 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). */ #undef REGISTER_NAMES #define REGISTER_NAMES { "eax", "ecx", "edx", "ebx", \ "esp", "ebp", "esi", "edi", \ "eip", "eflags","cs", "ss", \ "ds", "es", "fs", "gs", \ "st0", "st1", "st2", "st3", \ "st4", "st5", "st6", "st7", \ "fctrl","fstat", "ftag", "fcs", \ "fopsel","fip", "fopoff" } #undef FP_REGNUM #define FP_REGNUM 5 /* (ebp) Contains addr of stack frame */ #undef SP_REGNUM #define SP_REGNUM 4 /* (usp) Contains address of top of stack */ #undef PS_REGNUM #define PS_REGNUM 9 /* (ps) Contains processor status */ #undef PC_REGNUM #define PC_REGNUM 8 /* (eip) Contains program counter */ #undef FP0_REGNUM #define FP0_REGNUM 16 /* Floating point register 0 */ #undef FPC_REGNUM #define FPC_REGNUM 24 /* 80387 control register */ #undef FPCWD_REGNUM #define FPCWD_REGNUM FPC_REGNUM #undef FPSWD_REGNUM #define FPSWD_REGNUM 25 /* 80387 status register */ #undef FPTWD_REGNUM #define FPTWD_REGNUM 26 /* 80387 tag register */ #undef FPIPO_REGNUM #define FPIPO_REGNUM 29 /* 80387 instruction pointer offset reg */ #undef FPIPS_REGNUM #define FPIPS_REGNUM 27 /* 80387 instruction pointer selector reg */ #undef FPOOS_REGNUM #define FPOOS_REGNUM 30 /* 80387 operand pointer offset reg */ #undef FPOPS_REGNUM #define FPOPS_REGNUM 28 /* 80387 operand pointer selector reg */ /* Total amount of space needed to store our copies of the machine's register state, the array `registers'. */ #undef REGISTER_BYTES #define REGISTER_BYTES (10*4 + 6*2 + 8*10 + 5*2 + 2*4) /* Index within `registers' of the first byte of the space for register N. */ #undef REGISTER_BYTE #define REGBYTE_0 0 #define REGBYTE_10 (REGBYTE_0+10*4) #define REGBYTE_16 (REGBYTE_10+6*2) #define REGBYTE_24 (REGBYTE_16+8*10) #define REGBYTE_29 (REGBYTE_24+5*2) #define REGISTER_BYTE(N) (((N) < 10) ? (N) * 4 : \ (N) < 16 ? REGBYTE_10 +((N) - 10) * 2 : \ (N) < 24 ? REGBYTE_16 +((N) - 16) * 10 : \ (N) < 29 ? REGBYTE_24 +((N) - 24) * 2 : \ REGBYTE_29 + ((N) - 29) * 4) /* Number of bytes of storage in the actual machine representation for register N. */ #undef REGISTER_RAW_SIZE #define REGISTER_RAW_SIZE(N) ((N) < 10 ? 4 : (N) < 16 ? 2 : (N) < 24 ? 10 : \ (N) < 29 ? 2 : 4) /* Number of bytes of storage in the program's representation for register N. */ #undef REGISTER_VIRTUAL_SIZE #define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N) /* Largest value REGISTER_RAW_SIZE can have. */ #undef MAX_REGISTER_RAW_SIZE #define MAX_REGISTER_RAW_SIZE 10 /* Largest value REGISTER_VIRTUAL_SIZE can have. */ #undef MAX_REGISTER_VIRTUAL_SIZE #define MAX_REGISTER_VIRTUAL_SIZE 10 /* Nonzero if register N requires conversion from raw format to virtual format. */ #undef REGISTER_CONVERTIBLE #define REGISTER_CONVERTIBLE(N) ((N) < FP0_REGNUM ? 0 :\ (N) < FPC_REGNUM ? 1 : 0) /* The host and target are i386 machines and the compiler supports long doubles. Long doubles on the host therefore have the same layout as a 387 FPU stack register. */ #if defined(HAVE_LONG_DOUBLE) && defined(HOST_I386) #undef LD_I387 #define LD_I387 #endif /* Allow floating point numbers to be specified by a raw long double 10 hex bytes number, e.g. 1.0 can be input as 0x3fff8000000000000000 */ #ifdef LD_I387 #define HEX_LONG_DOUBLE_INPUT(base,p,len,target) \ ((base) == 16 && (len) == 20 \ && i387_hex_long_double_input ((p), (target))) #endif extern int i387_hex_long_double_input (char *p, long double *putithere); #undef REGISTER_CONVERT_TO_VIRTUAL #ifdef LD_I387 #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \ { \ if (TYPE == REGISTER_VIRTUAL_TYPE (REGNUM)) \ { \ memcpy (TO, FROM, TYPE_LENGTH (TYPE)); \ } \ else \ { \ long double val = *((long double *)FROM); \ store_floating ((TO), TYPE_LENGTH (TYPE), val); \ } \ } #else /* Convert data from raw format for register REGNUM in buffer FROM to virtual format with type TYPE in buffer TO. */ #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \ { \ double val; \ i387_to_double ((FROM), (char *)&val); \ store_floating ((TO), TYPE_LENGTH (TYPE), val); \ } #endif extern void i387_to_double PARAMS ((char *, char *)); #undef REGISTER_CONVERT_TO_RAW #ifdef LD_I387 #define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \ { \ if (TYPE == REGISTER_VIRTUAL_TYPE (REGNUM)) \ { \ memcpy (TO, FROM, TYPE_LENGTH (TYPE)); \ } \ else \ { \ long double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \ *((long double *)TO) = val; \ } \ } #else #define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \ { \ double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \ double_to_i387((char *)&val, (TO)); \ } #endif 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 #ifdef LD_I387 #define REGISTER_VIRTUAL_TYPE(N) \ ((N < FP0_REGNUM) ? builtin_type_int : \ (N < FPC_REGNUM) ? builtin_type_long_double : builtin_type_int) #else #define REGISTER_VIRTUAL_TYPE(N) \ ((N < FP0_REGNUM) ? builtin_type_int : \ (N < FPC_REGNUM) ? builtin_type_double : builtin_type_int) #endif #undef TARGET_LONG_DOUBLE_BIT #define TARGET_LONG_DOUBLE_BIT 96