86 lines
2.9 KiB
C
86 lines
2.9 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, 1998, 1999 Free Software Foundation, Inc.
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Derived from code
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Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
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Donn Terry, Softway Systems, Inc.
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This file contains the code-generation stuff common to the 32-bit
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versions of the DEC/Compaq Alpha architecture. It is shared by
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Interix and NT/Win32 ports. It should not contain compile-time
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or run-time dependent environment values (such as compiler options
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or anything containing a file or pathname.)
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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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#undef TARGET_ABI_WINDOWS_NT
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#define TARGET_ABI_WINDOWS_NT 1
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/* WinNT (and thus Interix) use unsigned int */
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#define SIZE_TYPE "unsigned int"
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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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/* We don't change Pmode to the "obvious" SI mode... the above appears
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to affect the in-memory size; we want the registers to stay DImode
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to match the md file */
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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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/* 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 $1,12($27)\n"); \
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fprintf (FILE, "\tldl $27,16($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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/* The alignment of a trampoline, in bits. */
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#undef TRAMPOLINE_ALIGNMENT
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#define TRAMPOLINE_ALIGNMENT 32
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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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#undef INITIALIZE_TRAMPOLINE
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#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
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alpha_initialize_trampoline (TRAMP, FNADDR, CXT, 20, 16, 12)
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