129 lines
4.3 KiB
C
129 lines
4.3 KiB
C
/* Definitions of target machine for GNU compiler, for DEC Alpha
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running Windows/NT.
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Copyright (C) 1995, 1996 Free Software Foundation, Inc.
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Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Names to predefine in the preprocessor for this target machine. */
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES "-DWIN32 -D_WIN32 -DWINNT -D__STDC__=0 -DALMOST_STDC\
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-D_M_ALPHA -D_ALPHA_ -D__alpha -D__alpha__\
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-D_LONGLONG -D__unaligned= -D__stdcall= \
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-Asystem(winnt) -Acpu(alpha) -Amachine(alpha)"
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#undef ASM_SPEC
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#undef ASM_FINAL_SPEC
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#define ASM_SPEC "-nopp -nologo %{g:-Zi}"
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/* Pointer is 32 bits but the hardware has 64-bit addresses, sign extended. */
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#undef POINTER_SIZE
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#define POINTER_SIZE 32
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#define POINTERS_EXTEND_UNSIGNED 0
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/* "long" is 32 bits. */
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#undef LONG_TYPE_SIZE
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#define LONG_TYPE_SIZE 32
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "short unsigned int"
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 16
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/* We can't do any debugging. */
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#undef SDB_DEBUGGING_INFO
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#undef DBX_DEBUGGING_INFO
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#undef MIPS_DEBUGGING_INFO
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#include "winnt/win-nt.h"
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#undef ASM_FILE_START
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#define ASM_FILE_START(FILE) \
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{ \
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alpha_write_verstamp (FILE); \
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fprintf (FILE, "\t.set noreorder\n"); \
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fprintf (FILE, "\t.set volatile\n"); \
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fprintf (FILE, "\t.set noat\n"); \
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fprintf (FILE, "\t.globl\t__fltused\n"); \
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ASM_OUTPUT_SOURCE_FILENAME (FILE, main_input_filename); \
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}
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#undef LIB_SPEC
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#define LIB_SPEC "%{mwindows:-subsystem windows -e _WinMainCRTStartup \
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USER32.LIB%s GDI32.LIB%s COMDLG32.LIB%s WINSPOOL.LIB%s} \
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%{!mwindows:-subsystem console -e _mainCRTStartup} \
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%{mcrtmt:LIBCMT.LIB%s KERNEL32.LIB%s} %{!mcrtmt:LIBC.LIB%s KERNEL32.LIB%s} \
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%{v}"
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/* Output assembler code for a block containing the constant parts
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of a trampoline, leaving space for the variable parts.
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The trampoline should set the static chain pointer to value placed
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into the trampoline and should branch to the specified routine. */
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#undef TRAMPOLINE_TEMPLATE
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#define TRAMPOLINE_TEMPLATE(FILE) \
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{ \
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fprintf (FILE, "\tbr $27,$LTRAMPP\n"); \
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fprintf (FILE, "$LTRAMPP:\n\tldl $1,16($27)\n"); \
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fprintf (FILE, "\tldl $27,12($27)\n"); \
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fprintf (FILE, "\tjmp $31,($27),0\n"); \
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fprintf (FILE, "\t.long 0,0\n"); \
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}
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/* Length in units of the trampoline for entering a nested function. */
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#undef TRAMPOLINE_SIZE
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#define TRAMPOLINE_SIZE 24
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/* Emit RTL insns to initialize the variable parts of a trampoline.
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FNADDR is an RTX for the address of the function's pure code.
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CXT is an RTX for the static chain value for the function.
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This differs from the standard version in that:
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We are not passed the current address in any register, and so have to
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load it ourselves.
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We do not initialize the "hint" field because it only has an 8k
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range and so the target is in range of something on the stack.
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Omitting the hint saves a bogus branch-prediction cache line load.
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Always have an executable stack -- no need for a system call.
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*/
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#undef INITIALIZE_TRAMPOLINE
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#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
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{ \
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rtx _addr, _val; \
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\
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_addr = memory_address (Pmode, plus_constant ((TRAMP), 16)); \
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_val = force_reg(Pmode, (FNADDR)); \
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emit_move_insn (gen_rtx (MEM, SImode, _addr), \
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gen_rtx (SUBREG, SImode, _val, 0)); \
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_addr = memory_address (Pmode, plus_constant ((TRAMP), 20)); \
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_val = force_reg(Pmode, (CXT)); \
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emit_move_insn (gen_rtx (MEM, SImode, _addr), \
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gen_rtx (SUBREG, SImode, _val, 0)); \
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\
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emit_insn (gen_rtx (UNSPEC_VOLATILE, VOIDmode, \
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gen_rtvec (1, const0_rtx), 0)); \
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}
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