1 /* Target definitions for GNU compiler for VAX using ELF 2 Copyright (C) 2002 Free Software Foundation, Inc. 3 Contributed by Matt Thomas (matt@3am-software.com) 4 5 This file is part of GNU CC. 6 7 GNU CC is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2, or (at your option) 10 any later version. 11 12 GNU CC is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GNU CC; see the file COPYING. If not, write to 19 the Free Software Foundation, 59 Temple Place - Suite 330, 20 Boston, MA 02111-1307, USA. */ 21 22 #undef REGISTER_PREFIX 23 #undef REGISTER_NAMES 24 #define REGISTER_PREFIX "%" 25 #define REGISTER_NAMES \ 26 {"%r0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", \ 27 "%r8", "%r9", "%r10", "%r11", "%ap", "%fp", "%sp", "%pc"} 28 29 #undef SIZE_TYPE 30 #define SIZE_TYPE "long unsigned int" 31 32 #undef PTRDIFF_TYPE 33 #define PTRDIFF_TYPE "long int" 34 35 /* Profiling routine. */ 36 #undef VAX_FUNCTION_PROFILER_NAME 37 #define VAX_FUNCTION_PROFILER_NAME "__mcount" 38 39 /* Let's be re-entrant. */ 40 #undef PCC_STATIC_STRUCT_RETURN 41 42 /* Make sure .stabs for a function are always the same section. */ 43 #define DBX_OUTPUT_FUNCTION_END(file,decl) function_section(decl) 44 45 /* Before the prologue, the top of the frame is below the argument 46 count pushed by the CALLS and before the start of the saved registers. */ 47 #define INCOMING_FRAME_SP_OFFSET 0 48 49 /* We use R2-R5 (call-clobbered) registers for exceptions. */ 50 #define EH_RETURN_DATA_REGNO(N) ((N) < 4 ? (N) + 2 : INVALID_REGNUM) 51 52 /* Place the top of the stack for the DWARF2 EH stackadj value. */ 53 #define EH_RETURN_STACKADJ_RTX \ 54 gen_rtx_MEM (SImode, \ 55 plus_constant (gen_rtx_REG (Pmode, FRAME_POINTER_REGNUM), \ 56 -4)) 57 58 /* Simple store the return handler into the call frame. */ 59 #define EH_RETURN_HANDLER_RTX \ 60 gen_rtx_MEM (Pmode, \ 61 plus_constant (gen_rtx_REG (Pmode, FRAME_POINTER_REGNUM), \ 62 16)) 63 64 65 /* Reserve the top of the stack for exception handler stackadj value. */ 66 #undef STARTING_FRAME_OFFSET 67 #define STARTING_FRAME_OFFSET -4 68 69 /* The VAX wants no space between the case instruction and the jump table. */ 70 #undef ASM_OUTPUT_BEFORE_CASE_LABEL 71 #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE, PREFIX, NUM, TABLE) 72 73 /* Get the udiv/urem calls out of the user's namespace. */ 74 #undef UDIVSI3_LIBCALL 75 #define UDIVSI3_LIBCALL "*__udiv" 76 #undef UMODSI3_LIBCALL 77 #define UMODSI3_LIBCALL "*__urem" 78 79 #undef OVERRIDE_OPTIONS 80 #define OVERRIDE_OPTIONS \ 81 do \ 82 { \ 83 /* Do generic VAX overrides. */ \ 84 override_options (); \ 85 \ 86 /* Turn off function CSE if we're \ 87 doing PIC. */ \ 88 if (flag_pic) flag_no_function_cse = 1; \ 89 } \ 90 while (0) 91 92 /* VAX ELF is always gas; override the generic VAX ASM_SPEC. */ 93 94 #undef ASM_SPEC 95 #define ASM_SPEC "" 96