1 /* Target definitions for GNU compiler for VAX using ELF 2 Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc. 3 Contributed by Matt Thomas <matt@3am-software.com> 4 5 This file is part of GCC. 6 7 GCC 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 GCC 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 GCC; see the file COPYING. If not, write to 19 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 20 Boston, MA 02110-1301, USA. */ 21 22 #undef TARGET_ELF 23 #define TARGET_ELF 1 24 25 #undef REGISTER_PREFIX 26 #undef REGISTER_NAMES 27 #define REGISTER_PREFIX "%" 28 #define REGISTER_NAMES \ 29 { "%r0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", \ 30 "%r8", "%r9", "%r10", "%r11", "%ap", "%fp", "%sp", "%pc", } 31 32 #undef SIZE_TYPE 33 #define SIZE_TYPE "long unsigned int" 34 35 #undef PTRDIFF_TYPE 36 #define PTRDIFF_TYPE "long int" 37 38 /* Profiling routine. */ 39 #undef VAX_FUNCTION_PROFILER_NAME 40 #define VAX_FUNCTION_PROFILER_NAME "__mcount" 41 42 /* Let's be re-entrant. */ 43 #undef PCC_STATIC_STRUCT_RETURN 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 #undef OVERRIDE_OPTIONS 74 #define OVERRIDE_OPTIONS \ 75 do \ 76 { \ 77 /* Do generic VAX overrides. */ \ 78 override_options (); \ 79 \ 80 /* Turn off function CSE if we're doing PIC. */ \ 81 if (flag_pic) \ 82 flag_no_function_cse = 1; \ 83 } \ 84 while (0) 85 86 /* VAX ELF is always gas; override the generic VAX ASM_SPEC. */ 87 88 #undef ASM_SPEC 89 #define ASM_SPEC "" 90 91