1 /* Definitions for SH running Linux-based GNU systems using ELF 2 Copyright (C) 1999, 2000, 2002, 2003, 2004, 2005, 2006, 2007 3 Free Software Foundation, Inc. 4 Contributed by Kazumoto Kojima <kkojima@rr.iij4u.or.jp> 5 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3, or (at your option) 11 any later version. 12 13 GCC is distributed in the hope that it will be useful, 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 19 along with GCC; see the file COPYING3. If not see 20 <http://www.gnu.org/licenses/>. */ 21 22 /* Run-time Target Specification. */ 23 #undef TARGET_VERSION 24 #define TARGET_VERSION fputs (" (SH GNU/Linux with ELF)", stderr); 25 26 /* Enable DWARF 2 exceptions. */ 27 #undef DWARF2_UNWIND_INFO 28 #define DWARF2_UNWIND_INFO 1 29 30 #undef SUBTARGET_CPP_SPEC 31 #define SUBTARGET_CPP_SPEC "\ 32 %{posix:-D_POSIX_SOURCE} \ 33 %{pthread:-D_REENTRANT -D_PTHREADS} \ 34 " 35 36 #define TARGET_OS_CPP_BUILTINS() \ 37 do \ 38 { \ 39 LINUX_TARGET_OS_CPP_BUILTINS(); \ 40 } \ 41 while (0) 42 43 #undef TARGET_DEFAULT 44 #define TARGET_DEFAULT \ 45 (TARGET_CPU_DEFAULT | MASK_USERMODE | TARGET_ENDIAN_DEFAULT \ 46 | TARGET_OPT_DEFAULT) 47 48 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack 49 50 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2" 51 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} \ 57 %{!static: \ 58 %{rdynamic:-export-dynamic} \ 59 %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}} \ 60 %{static:-static}" 61 62 /* Output assembler code to STREAM to call the profiler. */ 63 64 #undef FUNCTION_PROFILER 65 #define FUNCTION_PROFILER(STREAM,LABELNO) \ 66 do { \ 67 if (TARGET_SHMEDIA) \ 68 { \ 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 { \ 74 const char *gofs = "(datalabel _GLOBAL_OFFSET_TABLE_-(0f-.))"; \ 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"); \ 90 } \ 91 else \ 92 { \ 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"); \ 116 } \ 117 } while (0) 118 119 #define MD_UNWIND_SUPPORT "config/sh/linux-unwind.h" 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)) 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" 138