1/* Target definitions for GCC for Intel 80386 running Solaris 2
2   Copyright (C) 1993-2015 Free Software Foundation, Inc.
3   Contributed by Fred Fish (fnf@cygnus.com).
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#define SUBTARGET_OPTIMIZATION_OPTIONS				\
22  { OPT_LEVELS_1_PLUS, OPT_momit_leaf_frame_pointer, NULL, 1 }
23
24/* 32-bit Solaris/x86 only guarantees 4-byte stack alignment as required by
25   the i386 psABI, so realign it as necessary for SSE instructions.  */
26#undef STACK_REALIGN_DEFAULT
27#define STACK_REALIGN_DEFAULT (TARGET_64BIT ? 0 : 1)
28
29/* Old versions of the Solaris assembler can not handle the difference of
30   labels in different sections, so force DW_EH_PE_datarel if so.  */
31#ifndef HAVE_AS_IX86_DIFF_SECT_DELTA
32#undef ASM_PREFERRED_EH_DATA_FORMAT
33#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)			\
34  (flag_pic ? ((GLOBAL ? DW_EH_PE_indirect : 0)				\
35	       | (TARGET_64BIT ? DW_EH_PE_pcrel | DW_EH_PE_sdata4	\
36		  : DW_EH_PE_datarel))					\
37   : DW_EH_PE_absptr)
38#endif
39
40/* The Solaris linker will not merge a read-only .eh_frame section
41   with a read-write .eh_frame section.  None of the encodings used
42   with non-PIC code require runtime relocations.  In 64-bit mode,
43   since there is no backwards compatibility issue, we use a read-only
44   section for .eh_frame.  In 32-bit mode, we use a writable .eh_frame
45   section in order to be compatible with G++ for Solaris x86.  */
46#undef EH_TABLES_CAN_BE_READ_ONLY
47#define EH_TABLES_CAN_BE_READ_ONLY (TARGET_64BIT)
48
49/* Follow Sun requirements for TLS code sequences and use Sun assembler TLS
50   syntax.  */
51#undef TARGET_SUN_TLS
52#define TARGET_SUN_TLS 1
53
54/* Solaris 2/Intel as chokes on #line directives before Solaris 10.  */
55#undef CPP_SPEC
56#define CPP_SPEC "%{,assembler-with-cpp:-P} %(cpp_subtarget)"
57
58/* GNU as understands --32 and --64, but the native Solaris
59   assembler requires -xarch=generic or -xarch=generic64 instead.  */
60#ifdef USE_GAS
61#define ASM_CPU32_DEFAULT_SPEC "--32"
62#define ASM_CPU64_DEFAULT_SPEC "--64"
63#else
64#define ASM_CPU32_DEFAULT_SPEC "-xarch=generic"
65#define ASM_CPU64_DEFAULT_SPEC "-xarch=generic64"
66#endif
67
68#undef ASM_CPU_SPEC
69#define ASM_CPU_SPEC "%(asm_cpu_default)"
70
71/* Don't include ASM_PIC_SPEC.  While the Solaris 10+ assembler accepts -K PIC,
72   it gives many warnings:
73	Absolute relocation is used for symbol "<symbol>"
74   GNU as doesn't recognize -K at all.  */
75#undef ASM_SPEC
76#define ASM_SPEC ASM_SPEC_BASE
77
78#define DEFAULT_ARCH32_P !TARGET_64BIT_DEFAULT
79
80#define ARCH64_SUBDIR "amd64"
81
82#ifdef USE_GLD
83/* Since binutils 2.21, GNU ld supports new *_sol2 emulations to strictly
84   follow the Solaris 2 ABI.  Prefer them if present.  */
85#ifdef HAVE_LD_SOL2_EMULATION
86#define ARCH32_EMULATION "elf_i386_sol2"
87#define ARCH64_EMULATION "elf_x86_64_sol2"
88#else
89#define ARCH32_EMULATION "elf_i386"
90#define ARCH64_EMULATION "elf_x86_64"
91#endif
92#endif
93
94#define ENDFILE_ARCH_SPEC \
95  "%{mpc32:crtprec32.o%s} \
96   %{mpc64:crtprec64.o%s} \
97   %{mpc80:crtprec80.o%s}"
98
99#define SUBTARGET_CPU_EXTRA_SPECS \
100  { "cpp_subtarget",	 CPP_SUBTARGET_SPEC },		\
101  { "asm_cpu",		 ASM_CPU_SPEC },		\
102  { "asm_cpu_default",	 ASM_CPU_DEFAULT_SPEC },	\
103
104/* Register the Solaris-specific #pragma directives.  */
105#define REGISTER_SUBTARGET_PRAGMAS() solaris_register_pragmas ()
106
107#undef LOCAL_LABEL_PREFIX
108#define LOCAL_LABEL_PREFIX "."
109
110/* The Solaris 10 FCS as doesn't accept "#" comments, while later versions
111   do.  */
112#undef ASM_COMMENT_START
113#define ASM_COMMENT_START "/"
114
115/* The 32-bit Solaris assembler does not support .quad.  Do not use it.  */
116#ifndef HAVE_AS_IX86_QUAD
117#undef ASM_QUAD
118#endif
119
120/* The native Solaris assembler can't calculate the difference between
121   symbols in different sections, which causes problems for -fPIC jump
122   tables in .rodata.  */
123#ifndef HAVE_AS_IX86_DIFF_SECT_DELTA
124#undef JUMP_TABLES_IN_TEXT_SECTION
125#define JUMP_TABLES_IN_TEXT_SECTION 1
126
127/* The native Solaris assembler cannot handle the SYMBOL-. syntax, but
128   requires SYMBOL@rel/@rel64 instead.  */
129#define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL)	\
130  do {							\
131    fputs (integer_asm_op (SIZE, FALSE), FILE);		\
132    assemble_name (FILE, LABEL);			\
133    fputs (SIZE == 8 ? "@rel64" : "@rel", FILE);	\
134  } while (0)
135#endif
136
137/* The Solaris assembler wants a .local for non-exported aliases.  */
138#define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET)	\
139  do {							\
140    tree id = DECL_ASSEMBLER_NAME (DECL);		\
141    ultimate_transparent_alias_target (&id);		\
142    const char *declname = IDENTIFIER_POINTER (id);	\
143    ASM_OUTPUT_DEF ((FILE), declname,			\
144		    IDENTIFIER_POINTER (TARGET));	\
145    if (! TREE_PUBLIC (DECL))				\
146      {							\
147	fprintf ((FILE), "%s", LOCAL_ASM_OP);		\
148	assemble_name ((FILE), declname);		\
149	fprintf ((FILE), "\n");				\
150      }							\
151  } while (0)
152
153#ifndef USE_GAS
154/* The Sun assembler uses .tcomm for TLS common sections.  */
155#define TLS_COMMON_ASM_OP ".tcomm"
156
157/* Similar to the Sun assembler on SPARC, the native assembler requires
158   TLS objects to be declared as @tls_obj (not @tls_object).  Unlike SPARC,
159   gas doesn't understand this variant.  */
160#undef  ASM_DECLARE_OBJECT_NAME
161#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)		\
162  do								\
163    {								\
164      HOST_WIDE_INT size;					\
165								\
166      if (targetm.have_tls && DECL_THREAD_LOCAL_P (DECL))	\
167	ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_obj");	\
168      else							\
169	ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");	\
170								\
171      size_directive_output = 0;				\
172      if (!flag_inhibit_size_directive				\
173	  && (DECL) && DECL_SIZE (DECL))			\
174	{							\
175	  size_directive_output = 1;				\
176	  size = int_size_in_bytes (TREE_TYPE (DECL));		\
177	  ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size);		\
178	}							\
179								\
180      ASM_OUTPUT_LABEL (FILE, NAME);				\
181    }								\
182  while (0)
183#endif /* !USE_GAS */
184
185/* As in sparc/sol2.h, override the default from i386/x86-64.h to work
186   around Sun as TLS bug.  */
187#undef  ASM_OUTPUT_ALIGNED_COMMON
188#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)		\
189  do									\
190    {									\
191      if (TARGET_SUN_TLS						\
192	  && in_section							\
193	  && ((in_section->common.flags & SECTION_TLS) == SECTION_TLS))	\
194	switch_to_section (bss_section);				\
195      x86_elf_aligned_common (FILE, NAME, SIZE, ALIGN);			\
196    }									\
197  while  (0)
198
199/* Output a simple call for .init/.fini.  */
200#define ASM_OUTPUT_CALL(FILE, FN)				\
201  do								\
202    {								\
203      fprintf (FILE, "\tcall\t");				\
204      ix86_print_operand (FILE, XEXP (DECL_RTL (FN), 0), 'P');	\
205      fprintf (FILE, "\n");					\
206    }								\
207  while (0)
208
209#undef TARGET_ASM_NAMED_SECTION
210#define TARGET_ASM_NAMED_SECTION i386_solaris_elf_named_section
211
212#ifndef USE_GAS
213/* Emit COMDAT group signature symbols for Sun as.  */
214#undef TARGET_ASM_FILE_END
215#define TARGET_ASM_FILE_END solaris_file_end
216#endif
217
218/* Unlike GNU ld, Sun ld doesn't coalesce .ctors.N/.dtors.N sections, so
219   inhibit their creation.  Also cf. sparc/sysv4.h.  */
220#ifndef USE_GLD
221#define CTORS_SECTION_ASM_OP	"\t.section\t.ctors, \"aw\""
222#define DTORS_SECTION_ASM_OP	"\t.section\t.dtors, \"aw\""
223#endif
224
225#define USE_IX86_FRAME_POINTER 1
226#define USE_X86_64_FRAME_POINTER 1
227
228#undef NO_PROFILE_COUNTERS
229
230#undef MCOUNT_NAME
231#define MCOUNT_NAME "_mcount"
232
233/* We do not need NT_VERSION notes.  */
234#undef X86_FILE_START_VERSION_DIRECTIVE
235#define X86_FILE_START_VERSION_DIRECTIVE false
236
237/* Only recent versions of Solaris 11 ld properly support hidden .gnu.linkonce
238   sections, so don't use them.  */
239#ifndef USE_GLD
240#define USE_HIDDEN_LINKONCE 0
241#endif
242