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93ca1662 | 1 | /* Definitions for SH running Linux-based GNU systems using ELF |
2f83c7d6 | 2 | Copyright (C) 1999, 2000, 2002, 2003, 2004, 2005, 2006, 2007 |
e35b30c7 | 3 | Free Software Foundation, Inc. |
93ca1662 NY |
4 | Contributed by Kazumoto Kojima <kkojima@rr.iij4u.or.jp> |
5 | ||
7ec022b2 | 6 | This file is part of GCC. |
93ca1662 | 7 | |
7ec022b2 | 8 | GCC is free software; you can redistribute it and/or modify |
93ca1662 | 9 | it under the terms of the GNU General Public License as published by |
2f83c7d6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
93ca1662 NY |
11 | any later version. |
12 | ||
7ec022b2 | 13 | GCC is distributed in the hope that it will be useful, |
93ca1662 NY |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
2f83c7d6 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
93ca1662 NY |
21 | |
22 | /* Run-time Target Specification. */ | |
23 | #undef TARGET_VERSION | |
24 | #define TARGET_VERSION fputs (" (SH GNU/Linux with ELF)", stderr); | |
25 | ||
4977bab6 ZW |
26 | /* Enable DWARF 2 exceptions. */ |
27 | #undef DWARF2_UNWIND_INFO | |
28 | #define DWARF2_UNWIND_INFO 1 | |
29 | ||
f636e2a5 AH |
30 | #undef SUBTARGET_CPP_SPEC |
31 | #define SUBTARGET_CPP_SPEC "\ | |
93ca1662 | 32 | %{posix:-D_POSIX_SOURCE} \ |
f636e2a5 AH |
33 | %{pthread:-D_REENTRANT -D_PTHREADS} \ |
34 | " | |
35 | ||
f1a58d92 | 36 | #define TARGET_OS_CPP_BUILTINS() \ |
65f527e0 KK |
37 | do \ |
38 | { \ | |
39 | LINUX_TARGET_OS_CPP_BUILTINS(); \ | |
65f527e0 KK |
40 | } \ |
41 | while (0) | |
f1a58d92 R |
42 | |
43 | #undef TARGET_DEFAULT | |
44 | #define TARGET_DEFAULT \ | |
c0fb94d7 | 45 | (TARGET_CPU_DEFAULT | MASK_USERMODE | TARGET_ENDIAN_DEFAULT \ |
73a4d10b | 46 | | TARGET_OPT_DEFAULT) |
f1a58d92 | 47 | |
43c73004 KK |
48 | #define TARGET_ASM_FILE_END file_end_indicate_exec_stack |
49 | ||
7bd85ce0 JM |
50 | #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2" |
51 | ||
f1a58d92 R |
52 | #undef SUBTARGET_LINK_EMUL_SUFFIX |
53 | #define SUBTARGET_LINK_EMUL_SUFFIX "_linux" | |
54 | #undef SUBTARGET_LINK_SPEC | |
55 | #define SUBTARGET_LINK_SPEC \ | |
56 | "%{shared:-shared} \ | |
93ca1662 NY |
57 | %{!static: \ |
58 | %{rdynamic:-export-dynamic} \ | |
7bd85ce0 | 59 | %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}} \ |
93ca1662 NY |
60 | %{static:-static}" |
61 | ||
4977bab6 ZW |
62 | /* Output assembler code to STREAM to call the profiler. */ |
63 | ||
64 | #undef FUNCTION_PROFILER | |
65 | #define FUNCTION_PROFILER(STREAM,LABELNO) \ | |
66 | do { \ | |
ae88d80c | 67 | if (TARGET_SHMEDIA) \ |
4977bab6 | 68 | { \ |
ae88d80c KK |
69 | fprintf (STREAM, "\tpt\t1f,tr1\n"); \ |
70 | fprintf (STREAM, "\taddi.l\tr15,-8,r15\n"); \ | |
71 | fprintf (STREAM, "\tst.l\tr15,0,r18\n"); \ | |
72 | if (flag_pic) \ | |
73 | { \ | |
76243d10 | 74 | const char *gofs = "(datalabel _GLOBAL_OFFSET_TABLE_-(0f-.))"; \ |
ae88d80c KK |
75 | fprintf (STREAM, "\tmovi\t((%s>>16)&0xffff),r21\n", gofs); \ |
76 | fprintf (STREAM, "\tshori\t(%s & 0xffff),r21\n", gofs); \ | |
77 | fprintf (STREAM, "0:\tptrel/u\tr21,tr0\n"); \ | |
78 | fprintf (STREAM, "\tmovi\t((mcount@GOTPLT)&0xffff),r22\n"); \ | |
79 | fprintf (STREAM, "\tgettr\ttr0,r21\n"); \ | |
80 | fprintf (STREAM, "\tadd.l\tr21,r22,r21\n"); \ | |
81 | fprintf (STREAM, "\tld.l\tr21,0,r21\n"); \ | |
82 | fprintf (STREAM, "\tptabs\tr21,tr0\n"); \ | |
83 | } \ | |
84 | else \ | |
85 | fprintf (STREAM, "\tpt\tmcount,tr0\n"); \ | |
86 | fprintf (STREAM, "\tgettr\ttr1,r18\n"); \ | |
87 | fprintf (STREAM, "\tblink\ttr0,r63\n"); \ | |
88 | fprintf (STREAM, "1:\tld.l\tr15,0,r18\n"); \ | |
89 | fprintf (STREAM, "\taddi.l\tr15,8,r15\n"); \ | |
4977bab6 ZW |
90 | } \ |
91 | else \ | |
4977bab6 | 92 | { \ |
ae88d80c KK |
93 | if (flag_pic) \ |
94 | { \ | |
95 | fprintf (STREAM, "\tmov.l\t3f,r1\n"); \ | |
96 | fprintf (STREAM, "\tmova\t3f,r0\n"); \ | |
97 | fprintf (STREAM, "\tadd\tr1,r0\n"); \ | |
98 | fprintf (STREAM, "\tmov.l\t1f,r1\n"); \ | |
99 | fprintf (STREAM, "\tmov.l\t@(r0,r1),r1\n"); \ | |
100 | } \ | |
101 | else \ | |
102 | fprintf (STREAM, "\tmov.l\t1f,r1\n"); \ | |
103 | fprintf (STREAM, "\tsts.l\tpr,@-r15\n"); \ | |
104 | fprintf (STREAM, "\tmova\t2f,r0\n"); \ | |
105 | fprintf (STREAM, "\tjmp\t@r1\n"); \ | |
106 | fprintf (STREAM, "\tlds\tr0,pr\n"); \ | |
107 | fprintf (STREAM, "\t.align\t2\n"); \ | |
108 | if (flag_pic) \ | |
109 | { \ | |
110 | fprintf (STREAM, "1:\t.long\tmcount@GOT\n"); \ | |
111 | fprintf (STREAM, "3:\t.long\t_GLOBAL_OFFSET_TABLE_\n"); \ | |
112 | } \ | |
113 | else \ | |
114 | fprintf (STREAM, "1:\t.long\tmcount\n"); \ | |
115 | fprintf (STREAM, "2:\tlds.l\t@r15+,pr\n"); \ | |
4977bab6 | 116 | } \ |
4977bab6 ZW |
117 | } while (0) |
118 | ||
8662eb14 | 119 | #define MD_UNWIND_SUPPORT "config/sh/linux-unwind.h" |
235b4b36 KK |
120 | |
121 | /* For SH3 and SH4, we use a slot of the unwind frame which correspond | |
122 | to a fake register number 16 as a placeholder for the return address | |
123 | in MD_FALLBACK_FRAME_STATE_FOR and its content will be read with | |
124 | _Unwind_GetGR which uses dwarf_reg_size_table to get the size of | |
125 | the register. So the entry of dwarf_reg_size_table corresponding to | |
126 | this slot must be set. To do this, we redefine DBX_REGISTER_NUMBER | |
127 | so as to return itself for 16. */ | |
128 | #undef DBX_REGISTER_NUMBER | |
129 | #define DBX_REGISTER_NUMBER(REGNO) \ | |
130 | ((! TARGET_SH5 && (REGNO) == 16) ? 16 : SH_DBX_REGISTER_NUMBER (REGNO)) | |
73a4d10b R |
131 | |
132 | /* Since libgcc is compiled with -fpic for this target, we can't use | |
133 | __sdivsi3_1 as the division strategy for -O0 and -Os. */ | |
134 | #undef SH_DIV_STRATEGY_DEFAULT | |
135 | #define SH_DIV_STRATEGY_DEFAULT SH_DIV_CALL2 | |
136 | #undef SH_DIV_STR_FOR_SIZE | |
137 | #define SH_DIV_STR_FOR_SIZE "call2" |