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Diffstat (limited to 'gcc-4.9/gcc/config/i386/i386-interix.h')
| -rw-r--r-- | gcc-4.9/gcc/config/i386/i386-interix.h | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/config/i386/i386-interix.h b/gcc-4.9/gcc/config/i386/i386-interix.h new file mode 100644 index 000000000..59bbb508d --- /dev/null +++ b/gcc-4.9/gcc/config/i386/i386-interix.h @@ -0,0 +1,346 @@ +/* Target definitions for GCC for Intel 80386 running Interix + Parts Copyright (C) 1991-2014 Free Software Foundation, Inc. + + Parts: + by Douglas B. Rupp (drupp@cs.washington.edu). + by Ron Guilmette (rfg@netcom.com). + by Donn Terry (donn@softway.com). + by Mumit Khan (khan@xraylith.wisc.edu). + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 3, or (at your option) +any later version. + +GCC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +/* Note: Interix doesn't support user-written DLLs (use conventional + shared libs (.so) instead). Thus a lot of the stuff that might apply + about dllimport/dllexport and the like does not apply here. */ + +#include <stdio.h> + +/* Names to predefine in the preprocessor for this target machine. */ + +#define DBX_DEBUGGING_INFO 1 +#define SDB_DEBUGGING_INFO 1 +#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG + +/* Our strategy for finding global constructors is a bit different, although + not a lot. */ +#define DO_GLOBAL_CTORS_BODY \ +do { \ + int i; \ + unsigned long nptrs; \ + func_ptr *p; \ + asm( \ + " .section .ctor_head, \"rw\"\n" \ + "1:\n" \ + " .text \n" \ + ASM_LOAD_ADDR(1b,%0) \ + : "=r" (p) : : "cc"); \ + for (nptrs = 0; p[nptrs] != 0; nptrs++); \ + for (i = nptrs-1; i >= 0; i--) \ + p[i] (); \ +} while (0) + +#define DO_GLOBAL_DTORS_BODY \ +do { \ + func_ptr *p; \ + asm( \ + " .section .dtor_head, \"rw\"\n" \ + "1:\n" \ + " .text \n" \ + ASM_LOAD_ADDR(1b,%0) \ + : "=r" (p) : : "cc"); \ + while (*p) \ + { \ + p++; \ + (*(p-1)) (); \ + } \ +} while (0) + +/* We don't use the "usual" push-an-address solution. */ +#undef TARGET_ASM_CONSTRUCTOR + +#undef SUBTARGET_SWITCHES +#define SUBTARGET_SWITCHES \ +{ "ms-bitfields", MASK_MS_BITFIELD_LAYOUT, N_("Use native (MS) bitfield layout") }, \ +{ "no-ms-bitfields", -MASK_MS_BITFIELD_LAYOUT, N_("Use gcc default bitfield layout") }, + +#undef LIB_SPEC +#define LIB_SPEC "\ + %{!shared:%{!dynamic:-lc -lpsxdll \ + }} \ + %{!G:%{!dynamic:-lc -lpsxdll \ + }} \ + %{dynamic:-lc -lpsxdll \ + } \ + %{v}" + +#undef LINK_SPEC +#define LINK_SPEC "%{!shared:-stack 0x4000000,0x10000} \ + %{g} \ + %{dynamic:-Bdynamic} \ + %{static:-Bstatic} \ + %{shared:--shared -Bdynamic} \ + %{G:--shared -Bdynamic} \ + %{symbolic:--shared -Bsymbolic -Bdynamic} \ + %{rpath*:--rpath %*} \ + " + +#undef STARTFILE_SPEC +#define STARTFILE_SPEC \ + "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}} %{shared:crti%O%s}" + +#define TARGET_DECLSPEC 1 + +/* cpp handles __STDC__ */ +#define TARGET_OS_CPP_BUILTINS() \ + do \ + { \ + builtin_define ("__INTERIX"); \ + builtin_define ("_M_IX86=300"); \ + builtin_define ("_X86_=1"); \ + builtin_define ("__stdcall=__attribute__((__stdcall__))"); \ + builtin_define ("__cdecl=__attribute__((__cdecl__))"); \ + builtin_define ("__declspec(x)=__attribute__((x))"); \ + builtin_assert ("system=unix"); \ + builtin_assert ("system=interix"); \ + if (preprocessing_asm_p ()) \ + builtin_define_std ("LANGUAGE_ASSEMBLY"); \ + else \ + { \ + builtin_define_std ("LANGUAGE_C"); \ + if (c_dialect_cxx ()) \ + builtin_define_std ("LANGUAGE_C_PLUS_PLUS"); \ + if (c_dialect_objc ()) \ + builtin_define_std ("LANGUAGE_OBJECTIVE_C"); \ + } \ + } \ + while (0) + +#undef CPP_SPEC +#define CPP_SPEC "%{posix:-D_POSIX_SOURCE}" + +#define SIZE_TYPE "unsigned int" +#define PTRDIFF_TYPE "int" +#define WCHAR_TYPE "short unsigned int" +#define WCHAR_TYPE_SIZE 16 + +/* Turn off long double being 96 bits. */ +#undef LONG_DOUBLE_TYPE_SIZE +#define LONG_DOUBLE_TYPE_SIZE 64 +#undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE +#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64 + +#undef TARGET_LIBC_HAS_FUNCTION +#define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function + +/* The following are needed for us to be able to use winnt.c, but are not + otherwise meaningful to Interix. (The functions that use these are + never called because we don't do DLLs.) */ +#define TARGET_NOP_FUN_DLLIMPORT 1 +#define drectve_section() /* nothing */ + + +#define EH_FRAME_IN_DATA_SECTION + +#define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rdata,\"r\"" + +/* Define this macro if references to a symbol must be treated + differently depending on something about the variale or + function named by the symbol (such as what section it is in). */ + +#undef TARGET_ENCODE_SECTION_INFO +#define TARGET_ENCODE_SECTION_INFO i386_pe_encode_section_info +#undef TARGET_STRIP_NAME_ENCODING +#define TARGET_STRIP_NAME_ENCODING i386_pe_strip_name_encoding_full + +/* Emit code to check the stack when allocating more that 4000 + bytes in one go. */ + +#define CHECK_STACK_LIMIT 4000 + +/* By default, target has a 80387, uses IEEE compatible arithmetic, + and returns float values in the 387 and needs stack probes + We also align doubles to 64-bits forMSVC default compatibility + Ditto for bitfields. */ +#undef TARGET_SUBTARGET_DEFAULT +#define TARGET_SUBTARGET_DEFAULT \ + (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE | \ + MASK_ALIGN_DOUBLE | MASK_MS_BITFIELD_LAYOUT) + +/* The MS compilers take alignment as a number of bytes, so we do as well */ +#undef ASM_OUTPUT_ALIGN +#define ASM_OUTPUT_ALIGN(FILE,LOG) \ + if ((LOG)!=0) fprintf ((FILE), "\t.balign %d\n", 1<<(LOG)) + + +/* Define this macro if in some cases global symbols from one translation + unit may not be bound to undefined symbols in another translation unit + without user intervention. For instance, under Microsoft Windows + symbols must be explicitly imported from shared libraries (DLLs). */ +/* + * Old gcc(3.3) did not have 1 here + */ +#define MULTIPLE_SYMBOL_SPACES 1 + +extern void i386_pe_unique_section (tree, int); +#define TARGET_ASM_UNIQUE_SECTION i386_pe_unique_section + +/* Switch into a generic section. */ +#define TARGET_ASM_NAMED_SECTION default_pe_asm_named_section + +/* Select attributes for named sections. */ +#define TARGET_SECTION_TYPE_FLAGS i386_pe_section_type_flags + +/* Write the extra assembler code needed to declare a function + properly. If we are generating SDB debugging information, this + will happen automatically, so we only need to handle other cases. */ +#undef ASM_DECLARE_FUNCTION_NAME +#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ + do \ + { \ + if (write_symbols != SDB_DEBUG) \ + i386_pe_declare_function_type (FILE, NAME, TREE_PUBLIC (DECL)); \ + ASM_OUTPUT_LABEL (FILE, NAME); \ + } \ + while (0) + +/* Add an external function to the list of functions to be declared at + the end of the file. */ +#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \ + do \ + { \ + if (TREE_CODE (DECL) == FUNCTION_DECL) \ + i386_pe_record_external_function (DECL, NAME); \ + } \ + while (0) + +/* Declare the type properly for any external libcall. */ +#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \ + i386_pe_declare_function_type (FILE, XSTR (FUN, 0), 1) + +/* This says out to put a global symbol in the BSS section. */ +#undef ASM_OUTPUT_ALIGNED_BSS +#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ + asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN)) + +/* Don't assume anything about the header files. */ +#define NO_IMPLICIT_EXTERN_C + +/* External function declarations. */ +extern void i386_pe_record_external_function (tree, const char *); +extern void i386_pe_declare_function_type (FILE *, const char *, int); +extern void i386_pe_record_exported_symbol (const char *, int); +extern void i386_pe_asm_file_end (FILE *); + +/* For Win32 ABI compatibility */ +#undef DEFAULT_PCC_STRUCT_RETURN +#define DEFAULT_PCC_STRUCT_RETURN 0 + +/* A bitfield declared as `int' forces `int' alignment for the struct. */ +#undef PCC_BITFIELD_TYPE_MATTERS +#define PCC_BITFIELD_TYPE_MATTERS 1 + +/* Enable alias attribute support. */ +#ifndef SET_ASM_OP +#define SET_ASM_OP "\t.set\t" +#endif + +/* Note that there appears to be two different ways to support const + sections at the moment. You can either #define the symbol + READONLY_DATA_SECTION (giving it some code which switches to the + readonly data section) or else you can #define the symbols + EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and + SELECT_RTX_SECTION. We do both here just to be on the safe side. */ + +#define USE_CONST_SECTION 1 + +/* The linker will take care of this, and having them causes problems with + ld -r (specifically -rU). */ +#define CTOR_LISTS_DEFINED_EXTERNALLY 1 + +/* Output a definition (implements alias) */ +#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ +do \ +{ \ + fputs (SET_ASM_OP, (FILE)); \ + assemble_name (FILE, LABEL1); \ + fputc (',', (FILE)); \ + assemble_name (FILE, LABEL2); \ + fputc ('\n', (FILE)); \ + } \ +while (0) + +#define HOST_PTR_AS_INT unsigned long + +/* The following two flags are usually "off" for i386, because some non-gnu + tools (for the i386) don't handle them. However, we don't have that + problem, so.... */ + +/* Forward references to tags are allowed. */ +#define SDB_ALLOW_FORWARD_REFERENCES +/* Unknown tags are also allowed. */ +#define SDB_ALLOW_UNKNOWN_REFERENCES +/* DWARF2 Unwinding doesn't work with exception handling yet. */ +#define DWARF2_UNWIND_INFO 0 +/* MSVC returns structs of up to 8 bytes via registers. */ + +#undef SUBTARGET_RETURN_IN_MEMORY +#define SUBTARGET_RETURN_IN_MEMORY(TYPE, FNTYPE) \ + (TYPE_MODE (TYPE) == BLKmode || \ + (AGGREGATE_TYPE_P (TYPE) && int_size_in_bytes(TYPE) > 8 )) + +#define ASM_LOAD_ADDR(loc, reg) " leal " #loc "," #reg "\n" + +/* The integer half of this list needs to be constant. However, there's + a lot of disagreement about what the floating point adjustments should + be. We pick one that works with gdb. (The underlying problem is + what to do about the segment registers. Since we have access to them + from /proc, we'll allow them to be accessed in gdb, even tho the + gcc compiler can't generate them. (There's some evidence that + MSVC does, but possibly only for certain special "canned" sequences.) */ + +#undef DBX_REGISTER_NUMBER +#define DBX_REGISTER_NUMBER(n) \ +(TARGET_64BIT ? dbx64_register_map[n] \ + : (n) == 0 ? (int) 0 \ + : (n) == 1 ? (int) 2 \ + : (n) == 2 ? (int) 1 \ + : (n) == 3 ? (int) 3 \ + : (n) == 4 ? (int) 6 \ + : (n) == 5 ? (int) 7 \ + : (n) == 6 ? (int) 5 \ + : (n) == 7 ? (int) 4 \ + : ((n) >= FIRST_STACK_REG && (n) <= LAST_STACK_REG) ? (int) (n)+8 \ + : (int) (-1)) + +#define EH_FRAME_IN_DATA_SECTION + +/* the following are OSF linker (not gld) specific... we don't want them */ +#undef HAS_INIT_SECTION +#undef LD_INIT_SWITCH +#undef LD_FINI_SWITCH + +/* The following are needed for us to be able to use winnt.c, but are not + otherwise meaningful to Interix. (The functions that use these are + never called because we don't do DLLs.) */ +#define TARGET_NOP_FUN_DLLIMPORT 1 +#define I386_PE_STRIP_ENCODING(SYM_NAME) \ + ((SYM_NAME) + ((SYM_NAME)[0] == '@' \ + ? ((SYM_NAME)[3] == '*' ? 4 : 3) : 0) \ + + ((SYM_NAME)[0] == '*' ? 1 : 0)) + +#define drectve_section() /* nothing */ + |