1 /* Definitions for PA_RISC with ELF format on 64-bit Linux
2 Copyright (C) 1999, 2000 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
22 #define CPP_SPEC "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{mhppa:-D__hppa__} %{posix:-D_POSIX_SOURCE} -D_PA_RISC2_0 -D__LP64__"
24 #if 0 /* needs some work :-( */
25 /* If defined, this macro specifies a table of register pairs used to
26 eliminate unneeded registers that point into the stack frame. */
28 #define ELIMINABLE_REGS \
30 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
31 {ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
32 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
35 /* A C expression that returns nonzero if the compiler is allowed to try to
36 replace register number FROM with register number TO. The frame pointer
37 is automatically handled. */
39 #define CAN_ELIMINATE(FROM, TO) 1
41 /* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It
42 specifies the initial difference between the specified pair of
43 registers. This macro must be defined if `ELIMINABLE_REGS' is
45 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
50 fsize = compute_frame_size (get_frame_size (), 0); \
51 if ((TO) == FRAME_POINTER_REGNUM \
52 && (FROM) == ARG_POINTER_REGNUM) \
58 if ((TO) != STACK_POINTER_REGNUM) \
63 case FRAME_POINTER_REGNUM: \
67 case ARG_POINTER_REGNUM: \
68 (OFFSET) = - fsize - 16; \