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/* Target definitions for GNU compiler for VAX using ELF
Copyright (C) 2002-2013 Free Software Foundation, Inc.
Contributed by Matt Thomas <matt@3am-software.com>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#undef TARGET_ELF
#define TARGET_ELF 1
#undef REGISTER_PREFIX
#undef REGISTER_NAMES
#define REGISTER_PREFIX "%"
#define REGISTER_NAMES \
{ "%r0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", \
"%r8", "%r9", "%r10", "%r11", "%ap", "%fp", "%sp", "%pc", }
#undef SIZE_TYPE
#define SIZE_TYPE "long unsigned int"
#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE "long int"
/* Profiling routine. */
#undef VAX_FUNCTION_PROFILER_NAME
#define VAX_FUNCTION_PROFILER_NAME "__mcount"
/* Let's be re-entrant. */
#undef PCC_STATIC_STRUCT_RETURN
/* Before the prologue, the top of the frame is below the argument
count pushed by the CALLS and before the start of the saved registers. */
#define INCOMING_FRAME_SP_OFFSET 0
/* Offset from the frame pointer register value to the top of the stack. */
#define FRAME_POINTER_CFA_OFFSET(FNDECL) 0
/* We use R2-R5 (call-clobbered) registers for exceptions. */
#define EH_RETURN_DATA_REGNO(N) ((N) < 4 ? (N) + 2 : INVALID_REGNUM)
/* Place the top of the stack for the DWARF2 EH stackadj value. */
#define EH_RETURN_STACKADJ_RTX \
gen_rtx_MEM (SImode, \
plus_constant (Pmode, \
gen_rtx_REG (Pmode, FRAME_POINTER_REGNUM),\
-4))
/* Simple store the return handler into the call frame. */
#define EH_RETURN_HANDLER_RTX \
gen_rtx_MEM (Pmode, \
plus_constant (Pmode, \
gen_rtx_REG (Pmode, FRAME_POINTER_REGNUM),\
16))
/* Reserve the top of the stack for exception handler stackadj value. */
#undef STARTING_FRAME_OFFSET
#define STARTING_FRAME_OFFSET -4
/* The VAX wants no space between the case instruction and the jump table. */
#undef ASM_OUTPUT_BEFORE_CASE_LABEL
#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE, PREFIX, NUM, TABLE)
#undef SUBTARGET_OVERRIDE_OPTIONS
#define SUBTARGET_OVERRIDE_OPTIONS \
do \
{ \
/* Turn off function CSE if we're doing PIC. */ \
if (flag_pic) \
flag_no_function_cse = 1; \
} \
while (0)
/* Don't allow *foo which foo is non-local */
#define NO_EXTERNAL_INDIRECT_ADDRESS
#undef VAX_CC1_AND_CC1PLUS_SPEC
#define VAX_CC1_AND_CC1PLUS_SPEC \
"%{!fno-pic: \
%{!fpic: \
%{!fPIC:-fPIC}}}"
/* VAX ELF is always gas; override the generic VAX ASM_SPEC. */
#undef ASM_SPEC
#define ASM_SPEC "%{!fno-pic: %{!mno-asm-pic:-k}}"
/* We want PCREL dwarf output. */
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
((GLOBAL ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4)
/* Emit a PC-relative relocation. */
#define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL) \
do { \
fputs (integer_asm_op (SIZE, FALSE), FILE); \
fprintf (FILE, "%%pcrel%d(", SIZE * 8); \
assemble_name (FILE, LABEL); \
fputc (')', FILE); \
} while (0)
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