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1 | /* Definitions of target machine for GNU compiler, | |
2 | for Alpha NetBSD systems. | |
3 | Copyright (C) 1998, 2002 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GNU CC. | |
6 | ||
7 | GNU CC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU CC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU CC; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #undef TARGET_DEFAULT | |
23 | #define TARGET_DEFAULT (MASK_FP | MASK_FPREGS | MASK_GAS) | |
24 | ||
25 | #define TARGET_OS_CPP_BUILTINS() \ | |
26 | do { \ | |
27 | NETBSD_OS_CPP_BUILTINS_ELF(); \ | |
28 | NETBSD_OS_CPP_BUILTINS_LP64(); \ | |
29 | } while (0) | |
30 | ||
31 | ||
32 | /* NetBSD doesn't use the LANGUAGE* built-ins. */ | |
33 | #undef SUBTARGET_LANGUAGE_CPP_BUILTINS | |
34 | #define SUBTARGET_LANGUAGE_CPP_BUILTINS() /* nothing */ | |
35 | ||
36 | ||
37 | /* Show that we need a GP when profiling. */ | |
38 | #undef TARGET_PROFILING_NEEDS_GP | |
39 | #define TARGET_PROFILING_NEEDS_GP 1 | |
40 | ||
41 | ||
42 | /* Provide a CPP_SUBTARGET_SPEC appropriate for NetBSD/alpha. We use | |
43 | this to pull in CPP specs that all NetBSD configurations need. */ | |
44 | ||
45 | #undef CPP_SUBTARGET_SPEC | |
46 | #define CPP_SUBTARGET_SPEC "%(netbsd_cpp_spec)" | |
47 | ||
48 | #undef SUBTARGET_EXTRA_SPECS | |
49 | #define SUBTARGET_EXTRA_SPECS \ | |
50 | { "netbsd_cpp_spec", NETBSD_CPP_SPEC }, \ | |
51 | { "netbsd_link_spec", NETBSD_LINK_SPEC_ELF }, \ | |
52 | { "netbsd_entry_point", NETBSD_ENTRY_POINT }, | |
53 | ||
54 | ||
55 | /* Provide a LINK_SPEC appropriate for a NetBSD/alpha ELF target. */ | |
56 | ||
57 | #undef LINK_SPEC | |
58 | #define LINK_SPEC \ | |
59 | "%{G*} %{relax:-relax} \ | |
60 | %{O*:-O3} %{!O*:-O1} \ | |
61 | %(netbsd_link_spec)" | |
62 | ||
63 | #define NETBSD_ENTRY_POINT "__start" | |
64 | ||
65 | ||
66 | /* Provide an ENDFILE_SPEC appropriate for NetBSD/alpha ELF. Here we | |
67 | add crtend.o, which provides part of the support for getting | |
68 | C++ file-scope static objects deconstructed after exiting "main". | |
69 | ||
70 | We also need to handle the GCC option `-ffast-math'. */ | |
71 | ||
72 | #undef ENDFILE_SPEC | |
73 | #define ENDFILE_SPEC \ | |
74 | "%{ffast-math|funsafe-math-optimizations:crtfm%O%s} \ | |
75 | %{!shared:crtend%O%s} %{shared:crtendS%O%s}" | |
76 | ||
77 | ||
78 | /* Attempt to enable execute permissions on the stack. */ | |
79 | ||
80 | #define TRANSFER_FROM_TRAMPOLINE NETBSD_ENABLE_EXECUTE_STACK | |
81 | ||
82 | ||
83 | #undef TARGET_VERSION | |
84 | #define TARGET_VERSION fprintf (stderr, " (NetBSD/alpha ELF)"); |