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julius |
/* Definitions for SH running Linux-based GNU systems using ELF
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Copyright (C) 1999, 2000, 2002, 2003, 2004, 2005, 2006, 2007
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Free Software Foundation, Inc.
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Contributed by Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* Run-time Target Specification. */
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#undef TARGET_VERSION
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#define TARGET_VERSION fputs (" (SH GNU/Linux with ELF)", stderr);
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/* Enable DWARF 2 exceptions. */
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#undef DWARF2_UNWIND_INFO
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#define DWARF2_UNWIND_INFO 1
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#undef SUBTARGET_CPP_SPEC
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#define SUBTARGET_CPP_SPEC "\
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%{posix:-D_POSIX_SOURCE} \
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%{pthread:-D_REENTRANT -D_PTHREADS} \
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"
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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LINUX_TARGET_OS_CPP_BUILTINS(); \
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} \
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while (0)
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT \
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(TARGET_CPU_DEFAULT | MASK_USERMODE | TARGET_ENDIAN_DEFAULT \
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| TARGET_OPT_DEFAULT)
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#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
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#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
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#undef SUBTARGET_LINK_EMUL_SUFFIX
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#define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
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#undef SUBTARGET_LINK_SPEC
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#define SUBTARGET_LINK_SPEC \
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"%{shared:-shared} \
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%{!static: \
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%{rdynamic:-export-dynamic} \
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%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}} \
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%{static:-static}"
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/* Output assembler code to STREAM to call the profiler. */
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#undef FUNCTION_PROFILER
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#define FUNCTION_PROFILER(STREAM,LABELNO) \
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do { \
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if (TARGET_SHMEDIA) \
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{ \
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fprintf (STREAM, "\tpt\t1f,tr1\n"); \
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fprintf (STREAM, "\taddi.l\tr15,-8,r15\n"); \
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fprintf (STREAM, "\tst.l\tr15,0,r18\n"); \
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if (flag_pic) \
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{ \
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const char *gofs = "(datalabel _GLOBAL_OFFSET_TABLE_-(0f-.))"; \
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fprintf (STREAM, "\tmovi\t((%s>>16)&0xffff),r21\n", gofs); \
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fprintf (STREAM, "\tshori\t(%s & 0xffff),r21\n", gofs); \
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fprintf (STREAM, "0:\tptrel/u\tr21,tr0\n"); \
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fprintf (STREAM, "\tmovi\t((mcount@GOTPLT)&0xffff),r22\n"); \
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fprintf (STREAM, "\tgettr\ttr0,r21\n"); \
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fprintf (STREAM, "\tadd.l\tr21,r22,r21\n"); \
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fprintf (STREAM, "\tld.l\tr21,0,r21\n"); \
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fprintf (STREAM, "\tptabs\tr21,tr0\n"); \
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} \
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else \
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fprintf (STREAM, "\tpt\tmcount,tr0\n"); \
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fprintf (STREAM, "\tgettr\ttr1,r18\n"); \
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fprintf (STREAM, "\tblink\ttr0,r63\n"); \
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fprintf (STREAM, "1:\tld.l\tr15,0,r18\n"); \
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fprintf (STREAM, "\taddi.l\tr15,8,r15\n"); \
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} \
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else \
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{ \
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if (flag_pic) \
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{ \
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fprintf (STREAM, "\tmov.l\t3f,r1\n"); \
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fprintf (STREAM, "\tmova\t3f,r0\n"); \
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fprintf (STREAM, "\tadd\tr1,r0\n"); \
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fprintf (STREAM, "\tmov.l\t1f,r1\n"); \
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fprintf (STREAM, "\tmov.l\t@(r0,r1),r1\n"); \
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} \
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else \
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fprintf (STREAM, "\tmov.l\t1f,r1\n"); \
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fprintf (STREAM, "\tsts.l\tpr,@-r15\n"); \
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fprintf (STREAM, "\tmova\t2f,r0\n"); \
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fprintf (STREAM, "\tjmp\t@r1\n"); \
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fprintf (STREAM, "\tlds\tr0,pr\n"); \
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fprintf (STREAM, "\t.align\t2\n"); \
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if (flag_pic) \
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{ \
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fprintf (STREAM, "1:\t.long\tmcount@GOT\n"); \
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fprintf (STREAM, "3:\t.long\t_GLOBAL_OFFSET_TABLE_\n"); \
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} \
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else \
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fprintf (STREAM, "1:\t.long\tmcount\n"); \
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fprintf (STREAM, "2:\tlds.l\t@r15+,pr\n"); \
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} \
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} while (0)
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#define MD_UNWIND_SUPPORT "config/sh/linux-unwind.h"
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/* For SH3 and SH4, we use a slot of the unwind frame which correspond
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to a fake register number 16 as a placeholder for the return address
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in MD_FALLBACK_FRAME_STATE_FOR and its content will be read with
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_Unwind_GetGR which uses dwarf_reg_size_table to get the size of
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the register. So the entry of dwarf_reg_size_table corresponding to
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this slot must be set. To do this, we redefine DBX_REGISTER_NUMBER
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so as to return itself for 16. */
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#undef DBX_REGISTER_NUMBER
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#define DBX_REGISTER_NUMBER(REGNO) \
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((! TARGET_SH5 && (REGNO) == 16) ? 16 : SH_DBX_REGISTER_NUMBER (REGNO))
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/* Since libgcc is compiled with -fpic for this target, we can't use
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__sdivsi3_1 as the division strategy for -O0 and -Os. */
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#undef SH_DIV_STRATEGY_DEFAULT
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#define SH_DIV_STRATEGY_DEFAULT SH_DIV_CALL2
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#undef SH_DIV_STR_FOR_SIZE
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#define SH_DIV_STR_FOR_SIZE "call2"
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