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)
5 This file is part of GNU CC.
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)
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.
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. */
22 #undef REGISTER_PREFIX
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"}
30 #define SIZE_TYPE "long unsigned int"
33 #define PTRDIFF_TYPE "long int"
35 /* Profiling routine. */
36 #undef FUNCTION_PROFILER
37 #define FUNCTION_PROFILER(FILE, LABELNO) \
38 fprintf (FILE, "\tmovab .LP%d,%sr0\n\tjsb __mcount\n", (LABELNO), \
41 /* Let's be re-entrant. */
42 #undef PCC_STATIC_STRUCT_RETURN
44 /* Make sure .stabs for a function are always the same section. */
45 #define DBX_OUTPUT_FUNCTION_END(file,decl) function_section(decl)
47 /* Before the prologue, the top of the frame is below the argument
48 count pushed by the CALLS and before the start of the saved registers. */
49 #define INCOMING_FRAME_SP_OFFSET 0
51 /* We use R2-R5 (call-clobbered) registers for exceptions. */
52 #define EH_RETURN_DATA_REGNO(N) ((N) < 4 ? (N) + 2 : INVALID_REGNUM)
54 /* Place the top of the stack for the DWARF2 EH stackadj value. */
55 #define EH_RETURN_STACKADJ_RTX \
56 gen_rtx_MEM (SImode, \
57 plus_constant (gen_rtx_REG (Pmode, FRAME_POINTER_REGNUM), \
60 /* Simple store the return handler into the call frame. */
61 #define EH_RETURN_HANDLER_RTX \
63 plus_constant (gen_rtx_REG (Pmode, FRAME_POINTER_REGNUM), \
67 /* Reserve the top of the stack for exception handler stackadj value. */
68 #undef STARTING_FRAME_OFFSET
69 #define STARTING_FRAME_OFFSET -4
71 /* The VAX wants no space between the case instruction and the jump table. */
72 #undef ASM_OUTPUT_BEFORE_CASE_LABEL
73 #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE, PREFIX, NUM, TABLE)
75 /* Get the udiv/urem calls out of the user's namespace. */
76 #undef UDIVSI3_LIBCALL
77 #define UDIVSI3_LIBCALL "*__udiv"
78 #undef UMODSI3_LIBCALL
79 #define UMODSI3_LIBCALL "*__urem"
81 #undef OVERRIDE_OPTIONS
82 #define OVERRIDE_OPTIONS \
85 /* Do generic VAX overrides. */ \
86 override_options (); \
88 /* Turn off function CSE if we're \
90 if (flag_pic) flag_no_function_cse = 1; \
94 /* VAX ELF is always gas; override the generic VAX ASM_SPEC. */