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Diffstat (limited to 'gdb/config/i386/tm-go32.h')
| -rw-r--r-- | gdb/config/i386/tm-go32.h | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/gdb/config/i386/tm-go32.h b/gdb/config/i386/tm-go32.h new file mode 100644 index 00000000000..84b82929ec5 --- /dev/null +++ b/gdb/config/i386/tm-go32.h @@ -0,0 +1,212 @@ +/* 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 + +#define NAMES_HAVE_UNDERSCORE |