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/* Override definitions in elfos.h/svr4.h to be correct for IA64. */
/* We want DWARF2 as specified by the IA64 ABI. */
#undef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
/* Various pseudo-ops for which the Intel assembler uses non-standard
definitions. */
#undef ASM_BYTE_OP
#define ASM_BYTE_OP "data1"
#undef STRING_ASM_OP
#define STRING_ASM_OP "stringz"
#undef SKIP_ASM_OP
#define SKIP_ASM_OP ".skip"
#undef COMMON_ASM_OP
#define COMMON_ASM_OP ".common"
#undef ASCII_DATA_ASM_OP
#define ASCII_DATA_ASM_OP "string"
/* ??? 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 ASM_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 (XSTR (XEXP (DECL_RTL (DECL), 0), 0)[0] == SDATA_NAME_FLAG_CHAR) \
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)
/* ??? Intel assembler does not allow "." in section names, so turn off
gnu.linkonce section support, but only when using the Intel assembler. */
#undef UNIQUE_SECTION_P
#define UNIQUE_SECTION_P(DECL) (TARGET_GNU_AS ? DECL_ONE_ONLY (DECL) : 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. */
#undef ASM_OUTPUT_LABELREF
#define ASM_OUTPUT_LABELREF(STREAM, NAME) \
do \
{ \
const char *real_name; \
STRIP_NAME_ENCODING (real_name, NAME); \
asm_fprintf (STREAM, "%U%s%s", real_name, \
(ia64_asm_output_label ? "" : "#")); \
} \
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 ".section\t.init,\"ax\",\"progbits\""
#undef FINI_SECTION_ASM_OP
#define FINI_SECTION_ASM_OP ".section\t.fini,\"ax\",\"progbits\""
#undef CTORS_SECTION_ASM_OP
#define CTORS_SECTION_ASM_OP ".section\t.ctors,\"aw\",\"progbits\""
#undef DTORS_SECTION_ASM_OP
#define DTORS_SECTION_ASM_OP ".section\t.dtors,\"aw\",\"progbits\""
/* A C statement (sans semicolon) to output an element in the table of
global constructors. */
/* Must override this to get @fptr relocation. */
#undef ASM_OUTPUT_CONSTRUCTOR
#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
do { \
ctors_section (); \
fputs ("\tdata8\t @fptr(", FILE); \
assemble_name (FILE, NAME); \
fputs (")\n", FILE); \
} while (0)
/* A C statement (sans semicolon) to output an element in the table of
global destructors. */
/* Must override this to get @fptr relocation. */
#undef ASM_OUTPUT_DESTRUCTOR
#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
do { \
dtors_section (); \
fputs ("\tdata8\t @fptr(", FILE); \
assemble_name (FILE, NAME); \
fputs (")\n", FILE); \
} while (0)
/* svr4.h undefines this, so we need to define it here. */
#define DBX_REGISTER_NUMBER(REGNO) \
(IN_REGNO_P (REGNO) ? (32 + (REGNO) - IN_REG (0)) \
: LOC_REGNO_P (REGNO) ? (32 + ia64_input_regs + \
(REGNO) - LOC_REG (0)) \
: OUT_REGNO_P (REGNO) ? (32 + ia64_input_regs + ia64_local_regs \
+ (REGNO) - OUT_REG (0)) \
: (REGNO) == FRAME_POINTER_REGNUM ? ia64_fp_regno \
: (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 don't want any symbol at the beginning of the file. This is defined in
dbxelf.h which is included from elfos.h, so we need to undef/define it
here. */
#undef ASM_IDENTIFY_GCC
#define ASM_IDENTIFY_GCC(FILE)
/* 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)
/* A C expression which outputs to the stdio stream STREAM some appropriate
text to go at the start of an assembler file. */
/* ??? Looks like almost every port, except for a few original ones, get this
wrong. Must emit #NO_APP as first line of file to turn of special assembler
preprocessing of files. */
/* ??? Even worse, it doesn't work, because gas does not accept the tab chars
that dwarf2out.c emits when #NO_APP. */
/* ??? Unrelated, but dwarf2out.c emits unnecessary newlines after strings,
may as well fix at the same time. */
#if 0
#undef ASM_FILE_START
#define ASM_FILE_START(STREAM) \
do { \
fputs (ASM_APP_OFF, STREAM); \
output_file_directive (STREAM, main_input_filename); \
} while (0)
#endif
/* Case label alignment is handled by ADDR_VEC_ALIGN now. */
#undef ASM_OUTPUT_BEFORE_CASE_LABEL
#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE)
/* We override svr4.h so that we can support the sdata section. */
#undef SELECT_SECTION
#define SELECT_SECTION(DECL,RELOC) \
{ \
if (TREE_CODE (DECL) == STRING_CST) \
{ \
if (! flag_writable_strings) \
const_section (); \
else \
data_section (); \
} \
else if (TREE_CODE (DECL) == VAR_DECL) \
{ \
if (XSTR (XEXP (DECL_RTL (DECL), 0), 0)[0] \
== SDATA_NAME_FLAG_CHAR) \
sdata_section (); \
/* ??? We need the extra ! RELOC check, because the default is to \
only check RELOC if flag_pic is set, and we don't set flag_pic \
(yet?). */ \
else if (DECL_READONLY_SECTION (DECL, RELOC) && ! (RELOC)) \
const_section (); \
else \
data_section (); \
} \
else \
const_section (); \
}
#undef EXTRA_SECTIONS
#define EXTRA_SECTIONS in_const, in_ctors, in_dtors, in_sdata, in_sbss
#undef EXTRA_SECTION_FUNCTIONS
#define EXTRA_SECTION_FUNCTIONS \
CONST_SECTION_FUNCTION \
CTORS_SECTION_FUNCTION \
DTORS_SECTION_FUNCTION \
SDATA_SECTION_FUNCTION \
SBSS_SECTION_FUNCTION
#define SDATA_SECTION_ASM_OP ".sdata"
#define SDATA_SECTION_FUNCTION \
void \
sdata_section () \
{ \
if (in_section != in_sdata) \
{ \
fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
in_section = in_sdata; \
} \
}
#define SBSS_SECTION_ASM_OP ".sbss"
#define SBSS_SECTION_FUNCTION \
void \
sbss_section () \
{ \
if (in_section != in_sbss) \
{ \
fprintf (asm_out_file, "%s\n", SBSS_SECTION_ASM_OP); \
in_section = in_sbss; \
} \
}
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