1 /* Target definitions for GNU compiler for VAX using ELF
2 Copyright (C) 2002-2014 Free Software Foundation, Inc.
3 Contributed by Matt Thomas <matt@3am-software.com>
5 This file is part of GCC.
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 3, or (at your option)
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.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
24 #undef REGISTER_PREFIX
26 #define REGISTER_PREFIX "%"
27 #define REGISTER_NAMES \
28 { "%r0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", \
29 "%r8", "%r9", "%r10", "%r11", "%ap", "%fp", "%sp", "%pc", }
32 #define SIZE_TYPE "long unsigned int"
35 #define PTRDIFF_TYPE "long int"
37 /* Profiling routine. */
38 #undef VAX_FUNCTION_PROFILER_NAME
39 #define VAX_FUNCTION_PROFILER_NAME "__mcount"
41 /* Let's be re-entrant. */
42 #undef PCC_STATIC_STRUCT_RETURN
44 /* Before the prologue, the top of the frame is below the argument
45 count pushed by the CALLS and before the start of the saved registers. */
46 #define INCOMING_FRAME_SP_OFFSET 0
48 /* Offset from the frame pointer register value to the top of the stack. */
49 #define FRAME_POINTER_CFA_OFFSET(FNDECL) 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 (Pmode, \
58 gen_rtx_REG (Pmode, FRAME_POINTER_REGNUM),\
61 /* Simple store the return handler into the call frame. */
62 #define EH_RETURN_HANDLER_RTX \
64 plus_constant (Pmode, \
65 gen_rtx_REG (Pmode, FRAME_POINTER_REGNUM),\
69 /* Reserve the top of the stack for exception handler stackadj value. */
70 #undef STARTING_FRAME_OFFSET
71 #define STARTING_FRAME_OFFSET -4
73 /* The VAX wants no space between the case instruction and the jump table. */
74 #undef ASM_OUTPUT_BEFORE_CASE_LABEL
75 #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE, PREFIX, NUM, TABLE)
77 #undef SUBTARGET_OVERRIDE_OPTIONS
78 #define SUBTARGET_OVERRIDE_OPTIONS \
81 /* Turn off function CSE if we're doing PIC. */ \
83 flag_no_function_cse = 1; \
87 /* Don't allow *foo which foo is non-local */
88 #define NO_EXTERNAL_INDIRECT_ADDRESS
90 #undef VAX_CC1_AND_CC1PLUS_SPEC
91 #define VAX_CC1_AND_CC1PLUS_SPEC \
96 /* VAX ELF is always gas; override the generic VAX ASM_SPEC. */
99 #define ASM_SPEC "%{!fno-pic: %{!mno-asm-pic:-k}}"
101 /* We want PCREL dwarf output. */
102 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
103 ((GLOBAL ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4)
105 /* Emit a PC-relative relocation. */
106 #define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL) \
108 fputs (integer_asm_op (SIZE, FALSE), FILE); \
109 fprintf (FILE, "%%pcrel%d(", SIZE * 8); \
110 assemble_name (FILE, LABEL); \