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/* Override definitions in elfos.h/svr4.h to be correct for IA64.  */

#undef TARGET_INIT_LIBFUNCS

#define TARGET_INIT_LIBFUNCS ia64_sysv4_init_libfuncs

/* We want DWARF2 as specified by the IA64 ABI.  */

#undef PREFERRED_DEBUGGING_TYPE

#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG

/* Stabs does not work properly for 64-bit targets.  */

#undef DBX_DEBUGGING_INFO

/* Various pseudo-ops for which the Intel assembler uses non-standard

   definitions.  */

#undef STRING_ASM_OP

#define STRING_ASM_OP "\tstringz\t"

#undef SKIP_ASM_OP

#define SKIP_ASM_OP "\t.skip\t"

#undef COMMON_ASM_OP

#define COMMON_ASM_OP "\t.common\t"

#undef ASCII_DATA_ASM_OP

#define ASCII_DATA_ASM_OP "\tstring\t"

/* ia64-specific options for gas

   ??? ia64 gas doesn't accept standard svr4 assembler options?  */

#undef ASM_SPEC

#define ASM_SPEC "-x %{mconstant-gp} %{mauto-pic} %(asm_extra)"

/* ??? Unfortunately, .lcomm doesn't work, because it puts things in either

   .bss or .sbss, and we can't control the decision of which is used.  When

   I use .lcomm, I get a cryptic "Section group has no member" error from

   the Intel simulator.  So we must explicitly put variables in .bss

   instead.  This matters only if we care about the Intel assembler.  */

/* This is asm_output_aligned_bss from varasm.c without the

   (*targetm.asm_out.globalize_label) call at the beginning.  */

/* This is for final.c, because it is used by ASM_DECLARE_OBJECT_NAME.  */

extern int size_directive_output;

#undef ASM_OUTPUT_ALIGNED_LOCAL

#define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \

do {                                                                    \

  if ((DECL) && sdata_symbolic_operand (XEXP (DECL_RTL (DECL), 0), Pmode)) \

    sbss_section ();                                                    \

  else                                                                  \

    bss_section ();                                                     \

  ASM_OUTPUT_ALIGN (FILE, floor_log2 ((ALIGN) / BITS_PER_UNIT));        \

  ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL);                           \

  ASM_OUTPUT_SKIP (FILE, SIZE ? SIZE : 1);                              \

} while (0)

/* The # tells the Intel assembler that this is not a register name.

   However, we can't emit the # in a label definition, so we set a variable

   in ASM_OUTPUT_LABEL to control whether we want the postfix here or not.

   We append the # to the label name, but since NAME can be an expression

   we have to scan it for a non-label character and insert the # there.  */

#undef ASM_OUTPUT_LABELREF

#define ASM_OUTPUT_LABELREF(STREAM, NAME)       \

do {                                            \

  const char *name_ = NAME;                     \

  if (*name_ == '*')                            \

    name_++;                                    \

  else                                          \

    fputs (user_label_prefix, STREAM);          \

  fputs (name_, STREAM);                        \

  if (!ia64_asm_output_label)                   \

    fputc ('#', STREAM);                        \

} while (0)

/* Intel assembler requires both flags and type if declaring a non-predefined

   section.  */

#undef INIT_SECTION_ASM_OP

#define INIT_SECTION_ASM_OP     "\t.section\t.init,\"ax\",\"progbits\""

#undef FINI_SECTION_ASM_OP

#define FINI_SECTION_ASM_OP     "\t.section\t.fini,\"ax\",\"progbits\""

/* svr4.h undefines this, so we need to define it here.  */

#define DBX_REGISTER_NUMBER(REGNO) \

  ia64_dbx_register_number(REGNO)

/* Things that svr4.h defines to the wrong type, because it assumes 32 bit

   ints and 32 bit longs.  */

#undef SIZE_TYPE

#define SIZE_TYPE "long unsigned int"

#undef PTRDIFF_TYPE

#define PTRDIFF_TYPE "long int"

#undef WCHAR_TYPE

#define WCHAR_TYPE "int"

#undef WCHAR_TYPE_SIZE

#define WCHAR_TYPE_SIZE 32

/* We redefine this to use the ia64 .proc pseudo-op.  */

#undef ASM_DECLARE_FUNCTION_NAME

#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \

do {                                                                    \

  fputs ("\t.proc ", FILE);                                             \

  assemble_name (FILE, NAME);                                           \

  fputc ('\n', FILE);                                                   \

  ASM_OUTPUT_LABEL (FILE, NAME);                                        \

} while (0)

/* We redefine this to use the ia64 .endp pseudo-op.  */

#undef ASM_DECLARE_FUNCTION_SIZE

#define ASM_DECLARE_FUNCTION_SIZE(FILE, NAME, DECL) \

do {                                                                    \

  fputs ("\t.endp ", FILE);                                             \

  assemble_name (FILE, NAME);                                           \

  fputc ('\n', FILE);                                                   \

} while (0)

/* Override default elf definition.  */

/* ??? This is slight overkill.  We should check for static relocations

   and allow those in .rodata.  */

#undef  TARGET_ASM_SELECT_SECTION

#define TARGET_ASM_SELECT_SECTION  ia64_rwreloc_select_section

#undef  TARGET_ASM_UNIQUE_SECTION

#define TARGET_ASM_UNIQUE_SECTION  ia64_rwreloc_unique_section

#undef  TARGET_ASM_SELECT_RTX_SECTION

#define TARGET_ASM_SELECT_RTX_SECTION  ia64_rwreloc_select_rtx_section

#define TARGET_RWRELOC  true

#undef EXTRA_SECTIONS

#define EXTRA_SECTIONS in_sdata, in_sbss

#undef EXTRA_SECTION_FUNCTIONS

#define EXTRA_SECTION_FUNCTIONS                                         \

  SDATA_SECTION_FUNCTION                                                \

  SBSS_SECTION_FUNCTION

#define SDATA_SECTION_ASM_OP "\t.sdata"

#define SDATA_SECTION_FUNCTION                                          \

void                                                                    \

sdata_section (void)                                                    \

{                                                                       \

  if (in_section != in_sdata)                                           \

    {                                                                   \

      fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP);             \

      in_section = in_sdata;                                            \

    }                                                                   \

}

#define SBSS_SECTION_ASM_OP "\t.sbss"

#define SBSS_SECTION_FUNCTION                                           \

void                                                                    \

sbss_section (void)                                                     \

{                                                                       \

  if (in_section != in_sbss)                                            \

    {                                                                   \

      fprintf (asm_out_file, "%s\n", SBSS_SECTION_ASM_OP);              \

      in_section = in_sbss;                                             \

    }                                                                   \

}