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/* Definitions of target machine for GNU compiler, for DEC Alpha
running Windows/NT.
Copyright (C) 1995, 1996, 1998, 1999 Free Software Foundation, Inc.
Derived from code
Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
Donn Terry, Softway Systems, Inc.
This file contains the code-generation stuff common to the 32-bit
versions of the DEC/Compaq Alpha architecture. It is shared by
Interix and NT/Win32 ports. It should not contain compile-time
or run-time dependent environment values (such as compiler options
or anything containing a file or pathname.)
This file is part of GNU CC.
GNU CC 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 2, or (at your option)
any later version.
GNU CC 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 GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#undef TARGET_WINDOWS_NT
#define TARGET_WINDOWS_NT 1
/* WinNT (and thus Interix) use unsigned int */
#define SIZE_TYPE "unsigned int"
/* Pointer is 32 bits but the hardware has 64-bit addresses, sign extended. */
#undef POINTER_SIZE
#define POINTER_SIZE 32
#define POINTERS_EXTEND_UNSIGNED 0
/* We don't change Pmode to the "obvious" SI mode... the above appears
to affect the in-memory size; we want the registers to stay DImode
to match the md file */
/* "long" is 32 bits. */
#undef LONG_TYPE_SIZE
#define LONG_TYPE_SIZE 32
/* Output assembler code for a block containing the constant parts
of a trampoline, leaving space for the variable parts.
The trampoline should set the static chain pointer to value placed
into the trampoline and should branch to the specified routine. */
#undef TRAMPOLINE_TEMPLATE
#define TRAMPOLINE_TEMPLATE(FILE) \
{ \
fprintf (FILE, "\tbr $27,$LTRAMPP\n"); \
fprintf (FILE, "$LTRAMPP:\n\tldl $1,12($27)\n"); \
fprintf (FILE, "\tldl $27,16($27)\n"); \
fprintf (FILE, "\tjmp $31,($27),0\n"); \
fprintf (FILE, "\t.long 0,0\n"); \
}
/* Length in units of the trampoline for entering a nested function. */
#undef TRAMPOLINE_SIZE
#define TRAMPOLINE_SIZE 24
/* Emit RTL insns to initialize the variable parts of a trampoline.
FNADDR is an RTX for the address of the function's pure code.
CXT is an RTX for the static chain value for the function. */
#undef INITIALIZE_TRAMPOLINE
#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
alpha_initialize_trampoline (TRAMP, FNADDR, CXT, 20, 16, 12)
/* Output code to add DELTA to the first argument, and then jump to FUNCTION.
Used for C++ multiple inheritance. */
/* ??? This is only used with the v2 ABI, and alpha.c makes assumptions
about current_function_is_thunk that are not valid with the v3 ABI. */
#if 0
#undef ASM_OUTPUT_MI_THUNK
#define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \
do { \
const char *op, *fn_name = XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0); \
int reg; \
\
/* Mark end of prologue. */ \
output_end_prologue (FILE); \
\
/* Rely on the assembler to macro expand a large delta. */ \
reg = aggregate_value_p (TREE_TYPE (TREE_TYPE (FUNCTION))) ? 17 : 16; \
fprintf (FILE, "\tlda $%d,%ld($%d)\n", reg, (long)(DELTA), reg); \
\
op = "jsr"; \
if (current_file_function_operand (XEXP (DECL_RTL (FUNCTION), 0))) \
op = "br"; \
fprintf (FILE, "\t%s $31,", op); \
assemble_name (FILE, fn_name); \
fputc ('\n', FILE); \
} while (0)
#endif
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