netbsd-elf.h revision 1.1.1.1.8.2 
1/* Definitions for SH running NetBSD using ELF
2   Copyright (C) 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
3   Contributed by Wasabi Systems, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 3, or (at your option)
10any later version.
11
12GCC is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING3.  If not see
19<http://www.gnu.org/licenses/>.  */
20
21/* Run-time Target Specification.  */
22#if TARGET_ENDIAN_DEFAULT == MASK_LITTLE_ENDIAN
23#define TARGET_VERSION_ENDIAN "le"
24#else
25#define TARGET_VERSION_ENDIAN ""
26#endif
27
28#if TARGET_CPU_DEFAULT & MASK_SH5
29#if TARGET_CPU_DEFAULT & MASK_SH_E
30#define TARGET_VERSION_CPU "sh5"
31#else
32#define TARGET_VERSION_CPU "sh64"
33#endif /* MASK_SH_E */
34#else
35#define TARGET_VERSION_CPU "sh"
36#endif /* MASK_SH5 */
37
38#undef TARGET_VERSION
39#define TARGET_VERSION	fprintf (stderr, " (NetBSD/%s%s ELF)",		\
40                                 TARGET_VERSION_CPU, TARGET_VERSION_ENDIAN)
41
42
43/* Extra specs needed for NetBSD SuperH ELF targets.  */
44
45#undef SUBTARGET_EXTRA_SPECS
46#define SUBTARGET_EXTRA_SPECS						\
47  { "netbsd_entry_point", NETBSD_ENTRY_POINT },
48
49
50#define TARGET_OS_CPP_BUILTINS()					\
51  do									\
52    {									\
53      NETBSD_OS_CPP_BUILTINS_ELF();					\
54      builtin_define ("__NO_LEADING_UNDERSCORES__");			\
55    }									\
56  while (0)
57
58/* Provide a LINK_SPEC appropriate for a NetBSD/sh ELF target.
59   We use the SH_LINK_SPEC from sh/sh.h, and define the appropriate
60   SUBTARGET_LINK_SPEC that pulls in what we need from a generic
61   NetBSD ELF LINK_SPEC.  */
62
63/* LINK_EMUL_PREFIX from sh/elf.h */
64
65#undef SUBTARGET_LINK_EMUL_SUFFIX
66#define SUBTARGET_LINK_EMUL_SUFFIX "_nbsd"
67
68#undef SUBTARGET_LINK_SPEC
69#define SUBTARGET_LINK_SPEC NETBSD_LINK_SPEC_ELF
70
71#undef LINK_SPEC
72#define LINK_SPEC SH_LINK_SPEC
73
74#define NETBSD_ENTRY_POINT "__start"
75
76/* Provide a CPP_SPEC appropriate for NetBSD.  */
77#undef SUBTARGET_CPP_SPEC
78#define SUBTARGET_CPP_SPEC NETBSD_CPP_SPEC
79
80#undef TARGET_DEFAULT
81#define TARGET_DEFAULT \
82  (TARGET_CPU_DEFAULT | MASK_USERMODE | TARGET_ENDIAN_DEFAULT)
83
84/* Define because we use the label and we do not need them.  */
85#define NO_PROFILE_COUNTERS 1
86
87#undef FUNCTION_PROFILER
88#define FUNCTION_PROFILER(STREAM,LABELNO)				\
89do									\
90  {									\
91    if (TARGET_SHMEDIA32 || TARGET_SHMEDIA64)				\
92      {									\
93	/* FIXME */							\
94	sorry ("unimplemented-shmedia profiling");			\
95      }									\
96    else								\
97      {									\
98        fprintf((STREAM), "\tmov.l\t%sLP%d,r1\n",			\
99                LOCAL_LABEL_PREFIX, (LABELNO));				\
100        fprintf((STREAM), "\tmova\t%sLP%dr,r0\n",			\
101                LOCAL_LABEL_PREFIX, (LABELNO));				\
102        fprintf((STREAM), "\tjmp\t@r1\n");				\
103        fprintf((STREAM), "\tnop\n");					\
104        fprintf((STREAM), "\t.align\t2\n");				\
105        fprintf((STREAM), "%sLP%d:\t.long\t__mcount\n",			\
106                LOCAL_LABEL_PREFIX, (LABELNO));				\
107        fprintf((STREAM), "%sLP%dr:\n", LOCAL_LABEL_PREFIX, (LABELNO));	\
108      }									\
109  }									\
110while (0)
111
112/* Since libgcc is compiled with -fpic for this target, we can't use
113   __sdivsi3_1 as the division strategy for -O0 and -Os.  */
114#undef SH_DIV_STRATEGY_DEFAULT
115#define SH_DIV_STRATEGY_DEFAULT SH_DIV_CALL2
116#undef SH_DIV_STR_FOR_SIZE
117#define SH_DIV_STR_FOR_SIZE "call2"
118