255 lines
8.3 KiB
C
255 lines
8.3 KiB
C
/* Target definitions for GCC for Intel 80386 running Solaris 2
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Copyright (C) 1993-2021 Free Software Foundation, Inc.
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Contributed by Fred Fish (fnf@cygnus.com).
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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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#define SUBTARGET_OPTIMIZATION_OPTIONS \
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{ OPT_LEVELS_1_PLUS, OPT_momit_leaf_frame_pointer, NULL, 1 }
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/* 32-bit Solaris/x86 only guarantees 4-byte stack alignment as required by
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the i386 psABI, so realign it as necessary for SSE instructions. */
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#undef STACK_REALIGN_DEFAULT
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#define STACK_REALIGN_DEFAULT (TARGET_64BIT ? 0 : 1)
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/* Old versions of the Solaris assembler cannot handle the difference of
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labels in different sections, so force DW_EH_PE_datarel if so. */
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#ifndef HAVE_AS_IX86_DIFF_SECT_DELTA
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#undef ASM_PREFERRED_EH_DATA_FORMAT
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#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
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(flag_pic ? ((GLOBAL ? DW_EH_PE_indirect : 0) \
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| (TARGET_64BIT ? DW_EH_PE_pcrel | DW_EH_PE_sdata4 \
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: DW_EH_PE_datarel)) \
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: DW_EH_PE_absptr)
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#endif
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/* The Solaris linker will not merge a read-only .eh_frame section
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with a read-write .eh_frame section. None of the encodings used
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with non-PIC code require runtime relocations. In 64-bit mode,
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since there is no backwards compatibility issue, we use a read-only
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section for .eh_frame. In 32-bit mode, we use a writable .eh_frame
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section in order to be compatible with G++ for Solaris x86. */
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#undef EH_TABLES_CAN_BE_READ_ONLY
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#define EH_TABLES_CAN_BE_READ_ONLY (TARGET_64BIT)
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/* Follow Sun requirements for TLS code sequences and use Sun assembler TLS
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syntax. */
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#undef TARGET_SUN_TLS
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#define TARGET_SUN_TLS 1
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#undef CPP_SPEC
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#define CPP_SPEC "%(cpp_subtarget)"
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#undef CC1_SPEC
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#define CC1_SPEC "%(cc1_cpu) " ASAN_CC1_SPEC \
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" %{mx32:%e-mx32 is not supported on Solaris}"
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/* GNU as understands --32 and --64, but the native Solaris
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assembler requires -xarch=generic or -xarch=generic64 instead. */
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#ifdef USE_GAS
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#define ASM_CPU32_DEFAULT_SPEC "--32"
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#define ASM_CPU64_DEFAULT_SPEC "--64"
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#else
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#define ASM_CPU32_DEFAULT_SPEC "-xarch=generic"
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#define ASM_CPU64_DEFAULT_SPEC "-xarch=generic64"
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#endif
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/* Since Studio 12.6, as needs -xbrace_comment=no so its AVX512 syntax is
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fully compatible with gas. */
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#ifdef HAVE_AS_XBRACE_COMMENT_OPTION
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#define ASM_XBRACE_COMMENT_SPEC "-xbrace_comment=no"
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#else
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#define ASM_XBRACE_COMMENT_SPEC ""
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#endif
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#undef ASM_CPU_SPEC
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#define ASM_CPU_SPEC "%(asm_cpu_default) " ASM_XBRACE_COMMENT_SPEC
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/* Don't include ASM_PIC_SPEC. While the Solaris 10+ assembler accepts -K PIC,
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it gives many warnings:
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Absolute relocation is used for symbol "<symbol>"
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GNU as doesn't recognize -K at all. */
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#undef ASM_SPEC
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#define ASM_SPEC ASM_SPEC_BASE
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#define DEFAULT_ARCH32_P !TARGET_64BIT_DEFAULT
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#define ARCH64_SUBDIR "amd64"
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#ifdef USE_GLD
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/* Since binutils 2.21, GNU ld supports new *_sol2 emulations to strictly
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follow the Solaris 2 ABI. Prefer them if present. */
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#ifdef HAVE_LD_SOL2_EMULATION
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#define ARCH32_EMULATION "elf_i386_sol2"
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#define ARCH64_EMULATION "elf_x86_64_sol2"
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#else
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#define ARCH32_EMULATION "elf_i386"
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#define ARCH64_EMULATION "elf_x86_64"
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#endif
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#endif
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#define ENDFILE_ARCH_SPEC \
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"%{mpc32:crtprec32.o%s} \
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%{mpc64:crtprec64.o%s} \
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%{mpc80:crtprec80.o%s}"
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#define SUBTARGET_CPU_EXTRA_SPECS \
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{ "cpp_subtarget", CPP_SUBTARGET_SPEC }, \
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{ "asm_cpu", ASM_CPU_SPEC }, \
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{ "asm_cpu_default", ASM_CPU_DEFAULT_SPEC }, \
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/* Register the Solaris-specific #pragma directives. */
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#define REGISTER_SUBTARGET_PRAGMAS() solaris_register_pragmas ()
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#undef LOCAL_LABEL_PREFIX
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#define LOCAL_LABEL_PREFIX "."
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/* The 32-bit Solaris assembler does not support .quad. Do not use it. */
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#ifndef HAVE_AS_IX86_QUAD
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#undef ASM_QUAD
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#endif
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/* The native Solaris assembler can't calculate the difference between
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symbols in different sections, which causes problems for -fPIC jump
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tables in .rodata. */
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#ifndef HAVE_AS_IX86_DIFF_SECT_DELTA
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#undef JUMP_TABLES_IN_TEXT_SECTION
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#define JUMP_TABLES_IN_TEXT_SECTION 1
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/* The native Solaris assembler cannot handle the SYMBOL-. syntax, but
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requires SYMBOL@rel/@rel64 instead. */
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#define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL) \
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do { \
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fputs (integer_asm_op (SIZE, FALSE), FILE); \
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assemble_name (FILE, LABEL); \
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fputs (SIZE == 8 ? "@rel64" : "@rel", FILE); \
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} while (0)
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#endif
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/* The Solaris assembler wants a .local for non-exported aliases. */
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#define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET) \
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do { \
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tree id = DECL_ASSEMBLER_NAME (DECL); \
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ultimate_transparent_alias_target (&id); \
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const char *declname = IDENTIFIER_POINTER (id); \
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ASM_OUTPUT_DEF ((FILE), declname, \
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IDENTIFIER_POINTER (TARGET)); \
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if (! TREE_PUBLIC (DECL)) \
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{ \
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fprintf ((FILE), "%s", LOCAL_ASM_OP); \
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assemble_name ((FILE), declname); \
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fprintf ((FILE), "\n"); \
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} \
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} while (0)
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#ifndef USE_GAS
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/* The Sun assembler uses .tcomm for TLS common sections. */
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#define TLS_COMMON_ASM_OP ".tcomm"
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/* Similar to the Sun assembler on SPARC, the native assembler requires
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TLS objects to be declared as @tls_obj (not @tls_object). Unlike SPARC,
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gas doesn't understand this variant. */
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#undef ASM_DECLARE_OBJECT_NAME
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#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
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do \
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{ \
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HOST_WIDE_INT size; \
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\
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if (targetm.have_tls && DECL_THREAD_LOCAL_P (DECL)) \
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ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "tls_obj"); \
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else \
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ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
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\
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size_directive_output = 0; \
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if (!flag_inhibit_size_directive \
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&& (DECL) && DECL_SIZE (DECL)) \
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{ \
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size_directive_output = 1; \
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size = int_size_in_bytes (TREE_TYPE (DECL)); \
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ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \
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} \
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\
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ASM_OUTPUT_LABEL (FILE, NAME); \
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} \
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while (0)
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#endif /* !USE_GAS */
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/* As in sparc/sol2.h, override the default from i386/x86-64.h to work
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around Sun as TLS bug. */
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#undef ASM_OUTPUT_ALIGNED_DECL_COMMON
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#define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
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do \
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{ \
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if (TARGET_SUN_TLS \
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&& in_section \
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&& ((in_section->common.flags & SECTION_TLS) == SECTION_TLS)) \
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switch_to_section (bss_section); \
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x86_elf_aligned_decl_common (FILE, DECL, NAME, SIZE, ALIGN); \
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} \
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while (0)
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/* Output a simple call for .init/.fini. */
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#define ASM_OUTPUT_CALL(FILE, FN) \
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do \
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{ \
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fprintf (FILE, "\tcall\t"); \
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ix86_print_operand (FILE, XEXP (DECL_RTL (FN), 0), 'P'); \
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fprintf (FILE, "\n"); \
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} \
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while (0)
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#undef TARGET_ASM_NAMED_SECTION
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#define TARGET_ASM_NAMED_SECTION i386_solaris_elf_named_section
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/* Sun as requires "h" flag for large sections, GNU as can do without, but
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accepts "l". */
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#ifdef USE_GAS
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#define MACH_DEP_SECTION_ASM_FLAG 'l'
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#else
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#define MACH_DEP_SECTION_ASM_FLAG 'h'
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#endif
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#ifndef USE_GAS
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/* Emit COMDAT group signature symbols for Sun as. */
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#undef TARGET_ASM_FILE_END
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#define TARGET_ASM_FILE_END solaris_file_end
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#endif
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/* Unlike GNU ld, Sun ld doesn't coalesce .ctors.N/.dtors.N sections, so
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inhibit their creation. Also cf. sparc/sysv4.h. */
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#ifndef USE_GLD
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#define CTORS_SECTION_ASM_OP "\t.section\t.ctors, \"aw\""
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#define DTORS_SECTION_ASM_OP "\t.section\t.dtors, \"aw\""
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#endif
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#ifndef USE_GAS
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#define LARGECOMM_SECTION_ASM_OP "\t.lbcomm\t"
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#endif
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/* -fsanitize=address is currently only supported for 32-bit. */
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#define ASAN_REJECT_SPEC \
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DEF_ARCH64_SPEC("%e-fsanitize=address is not supported in this configuration")
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#undef NO_PROFILE_COUNTERS
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#undef MCOUNT_NAME
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#define MCOUNT_NAME "_mcount"
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/* We do not need NT_VERSION notes. */
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#undef X86_FILE_START_VERSION_DIRECTIVE
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#define X86_FILE_START_VERSION_DIRECTIVE false
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