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Diffstat (limited to 'contrib/gcc/config/alpha/alpha-interix.h')
| -rw-r--r-- | contrib/gcc/config/alpha/alpha-interix.h | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/contrib/gcc/config/alpha/alpha-interix.h b/contrib/gcc/config/alpha/alpha-interix.h new file mode 100644 index 0000000..668fe93 --- /dev/null +++ b/contrib/gcc/config/alpha/alpha-interix.h @@ -0,0 +1,252 @@ +/* Definitions of target machine for GNU compiler, for DEC Alpha + running Windows/NT. + Copyright (C) 1995, 1996, 1999 Free Software Foundation, Inc. + + Donn Terry, Softway Systems, Inc. + From code + Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu) + +This file is part of GNU CC. + +GNU CC 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 2, or (at your option) +any later version. + +GNU CC 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 GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +/* cpp handles __STDC__ */ +/* The three "Alpha" defines on the first such line are from the CLAXP spec */ +#undef CPP_PREDEFINES +#define CPP_PREDEFINES " \ + -D__INTERIX \ + -D__OPENNT \ + -D__Alpha_AXP -D_M_ALPHA -D_ALPHA_ \ + -D__alpha -D__alpha__\ + -D__stdcall= \ + -D__cdecl= \ + -Asystem(unix) -Asystem(interix) -Asystem(interix) -Acpu(alpha) -Amachine(alpha)" + +#undef CPP_SUBTARGET_SPEC +#define CPP_SUBTARGET_SPEC "\ +-remap \ +%{posix:-D_POSIX_SOURCE} \ +-idirafter %$INTERIX_ROOT/usr/include" + +#undef TARGET_VERSION +#define TARGET_VERSION fprintf (stderr, " (alpha Interix)"); + +/* alpha.h sets this, but it doesn't apply to us */ +#undef OBJECT_FORMAT_ECOFF +#undef OBJECT_FORMAT_COFF + +/* LINK_SPEC */ + +/* MD_STARTFILE_PREFIX */ + +/* ASM_OUTPUT_LOOP_ALIGN; ASM_OUTPUT_ALIGN_CODE */ + +/* Codegen macro overrides for NT internal conventions */ + +/* the below are ecoff specific... we don't need them, so + undef them (they'll get a default later) */ + +#undef PUT_SDB_BLOCK_START +#undef PUT_SDB_BLOCK_END + +/* 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 C++, but also needed for profiling */ + +/* Support const sections and the ctors and dtors sections for g++. + 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 + +#define CONST_SECTION_ASM_OP ".rdata" + +/* Define the pseudo-ops used to switch to the .ctors and .dtors sections. + + Note that we want to give these sections the SHF_WRITE attribute + because these sections will actually contain data (i.e. tables of + addresses of functions in the current root executable or shared library + file) and, in the case of a shared library, the relocatable addresses + will have to be properly resolved/relocated (and then written into) by + the dynamic linker when it actually attaches the given shared library + to the executing process. (Note that on SVR4, you may wish to use the + `-z text' option to the ELF linker, when building a shared library, as + an additional check that you are doing everything right. But if you do + use the `-z text' option when building a shared library, you will get + errors unless the .ctors and .dtors sections are marked as writable + via the SHF_WRITE attribute.) */ + +#define CTORS_SECTION_ASM_OP ".ctors" +#define DTORS_SECTION_ASM_OP ".dtors" + +/* A default list of other sections which we might be "in" at any given + time. For targets that use additional sections (e.g. .tdesc) you + should override this definition in the target-specific file which + includes this file. */ + +#undef EXTRA_SECTIONS +#define EXTRA_SECTIONS in_const, in_ctors, in_dtors + +/* A default list of extra section function definitions. For targets + that use additional sections (e.g. .tdesc) you should override this + definition in the target-specific file which includes this file. */ + +#undef EXTRA_SECTION_FUNCTIONS +#define EXTRA_SECTION_FUNCTIONS \ + CONST_SECTION_FUNCTION \ + CTORS_SECTION_FUNCTION \ + DTORS_SECTION_FUNCTION + +#undef READONLY_DATA_SECTION +#define READONLY_DATA_SECTION() const_section () + +extern void text_section (); + +#define CONST_SECTION_FUNCTION \ +void \ +const_section () \ +{ \ + if (!USE_CONST_SECTION) \ + text_section(); \ + else if (in_section != in_const) \ + { \ + fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \ + in_section = in_const; \ + } \ +} + +#define CTORS_SECTION_FUNCTION \ +void \ +ctors_section () \ +{ \ + if (in_section != in_ctors) \ + { \ + fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \ + in_section = in_ctors; \ + } \ +} + +#define DTORS_SECTION_FUNCTION \ +void \ +dtors_section () \ +{ \ + if (in_section != in_dtors) \ + { \ + fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \ + in_section = in_dtors; \ + } \ +} + +#define INT_ASM_OP ".long" + +/* A C statement (sans semicolon) to output an element in the table of + global constructors. */ +#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \ + do { \ + ctors_section (); \ + fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ + assemble_name (FILE, NAME); \ + fprintf (FILE, "\n"); \ + } while (0) + +/* A C statement (sans semicolon) to output an element in the table of + global destructors. */ +#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \ + do { \ + dtors_section (); \ + fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ + assemble_name (FILE, NAME); \ + fprintf (FILE, "\n"); \ + } while (0) + +/* The linker will take care of this, and having them causes problems with + ld -r (specifically -rU). */ +#define CTOR_LISTS_DEFINED_EXTERNALLY 1 + +#define SET_ASM_OP ".set" +/* Output a definition (implements alias) */ +#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ +do \ +{ \ + fprintf ((FILE), "\t"); \ + assemble_name (FILE, LABEL1); \ + fprintf (FILE, "="); \ + assemble_name (FILE, LABEL2); \ + fprintf (FILE, "\n"); \ + } \ +while (0) + +/* We use the defaults, so undef the null definitions */ +#undef PUT_SDB_FUNCTION_START +#undef PUT_SDB_FUNCTION_END +#undef PUT_SDB_EPILOGUE_END + +#define HOST_PTR_PRINTF "%p" +#define HOST_PTR_AS_INT unsigned long + +#define PCC_BITFIELD_TYPE_MATTERS 1 +#define PCC_BITFIELD_TYPE_TEST TYPE_NATIVE(rec) +#define GROUP_BITFIELDS_BY_ALIGN TYPE_NATIVE(rec) + +/* DWARF2 Unwinding doesn't work with exception handling yet. */ +#undef DWARF2_UNWIND_INFO + +/* Don't assume anything about the header files. */ +#define NO_IMPLICIT_EXTERN_C + +/* The definition of this macro implies that there are cases where + a scalar value cannot be returned in registers. + + On NT (according to the spec) anything except strings/array that fits + in 64 bits is returned in the registers (this appears to differ from + the rest of the Alpha family). */ + +#undef RETURN_IN_MEMORY +#define RETURN_IN_MEMORY(TYPE) \ + (TREE_CODE (TYPE) == ARRAY_TYPE || int_size_in_bytes(TYPE) > 8) + +#define ASM_LOAD_ADDR(loc, reg) " lda " #reg "," #loc "\n" + +#undef ASM_FILE_START +#define ASM_FILE_START(FILE) \ +{ \ + alpha_write_verstamp (FILE); \ + fprintf (FILE, "\t.set noreorder\n"); \ + fprintf (FILE, "\t.set volatile\n"); \ + fprintf (FILE, "\t.set noat\n"); \ + fprintf (FILE, "\t.globl\t__fltused\n"); \ + ASM_OUTPUT_SOURCE_FILENAME (FILE, main_input_filename); \ +} + +/* The current Interix assembler (consistent with the DEC documentation) + uses a=b NOT .set a,b; .set is for assembler options. */ +#undef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL +#define ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL(FILE, SY, HI, LO) \ + do { \ + assemble_name (FILE, SY); \ + fputc ('=', FILE); \ + assemble_name (FILE, HI); \ + fputc ('-', FILE); \ + assemble_name (FILE, LO); \ + } while (0) |
