1 /* Definitions of target machine for GNU compiler, for DEC Alpha 2 running Windows/NT. 3 Copyright (C) 1995, 1996, 1998, 1999 Free Software Foundation, Inc. 4 5 Derived from code 6 Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu) 7 8 Donn Terry, Softway Systems, Inc. 9 10 This file contains the code-generation stuff common to the 32-bit 11 versions of the DEC/Compaq Alpha architecture. It is shared by 12 Interix and NT/Win32 ports. It should not contain compile-time 13 or run-time dependent environment values (such as compiler options 14 or anything containing a file or pathname.) 15 16 This file is part of GNU CC. 17 18 GNU CC is free software; you can redistribute it and/or modify 19 it under the terms of the GNU General Public License as published by 20 the Free Software Foundation; either version 2, or (at your option) 21 any later version. 22 23 GNU CC is distributed in the hope that it will be useful, 24 but WITHOUT ANY WARRANTY; without even the implied warranty of 25 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 26 GNU General Public License for more details. 27 28 You should have received a copy of the GNU General Public License 29 along with GNU CC; see the file COPYING. If not, write to 30 the Free Software Foundation, 59 Temple Place - Suite 330, 31 Boston, MA 02111-1307, USA. */ 32 33 #undef TARGET_ABI_WINDOWS_NT 34 #define TARGET_ABI_WINDOWS_NT 1 35 36 /* WinNT (and thus Interix) use unsigned int */ 37 #define SIZE_TYPE "unsigned int" 38 39 /* Pointer is 32 bits but the hardware has 64-bit addresses, sign extended. */ 40 #undef POINTER_SIZE 41 #define POINTER_SIZE 32 42 #define POINTERS_EXTEND_UNSIGNED 0 43 44 /* We don't change Pmode to the "obvious" SI mode... the above appears 45 to affect the in-memory size; we want the registers to stay DImode 46 to match the md file */ 47 48 /* "long" is 32 bits. */ 49 #undef LONG_TYPE_SIZE 50 #define LONG_TYPE_SIZE 32 51 52 53 /* Output assembler code for a block containing the constant parts 54 of a trampoline, leaving space for the variable parts. 55 56 The trampoline should set the static chain pointer to value placed 57 into the trampoline and should branch to the specified routine. */ 58 59 #undef TRAMPOLINE_TEMPLATE 60 #define TRAMPOLINE_TEMPLATE(FILE) \ 61 { \ 62 fprintf (FILE, "\tbr $27,$LTRAMPP\n"); \ 63 fprintf (FILE, "$LTRAMPP:\n\tldl $1,12($27)\n"); \ 64 fprintf (FILE, "\tldl $27,16($27)\n"); \ 65 fprintf (FILE, "\tjmp $31,($27),0\n"); \ 66 fprintf (FILE, "\t.long 0,0\n"); \ 67 } 68 69 /* Length in units of the trampoline for entering a nested function. */ 70 71 #undef TRAMPOLINE_SIZE 72 #define TRAMPOLINE_SIZE 24 73 74 /* The alignment of a trampoline, in bits. */ 75 76 #undef TRAMPOLINE_ALIGNMENT 77 #define TRAMPOLINE_ALIGNMENT 32 78 79 /* Emit RTL insns to initialize the variable parts of a trampoline. 80 FNADDR is an RTX for the address of the function's pure code. 81 CXT is an RTX for the static chain value for the function. */ 82 83 #undef INITIALIZE_TRAMPOLINE 84 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \ 85 alpha_initialize_trampoline (TRAMP, FNADDR, CXT, 20, 16, 12) 86