-/* Override definitions in elfos.h/svr4.h to be correct for IA64. */
+/* Override definitions in elfos.h to be correct for IA64.
+
+Copyright (C) 2000-2022 Free Software Foundation, Inc.
+
+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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#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 ASM_BYTE_OP
-#define ASM_BYTE_OP "\tdata1\t"
-
#undef STRING_ASM_OP
#define STRING_ASM_OP "\tstringz\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 ASM_GLOBALIZE_LABEL
- call at the beginning. */
+/* 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) \
- && XSTR (XEXP (DECL_RTL (DECL), 0), 0)[0] == SDATA_NAME_FLAG_CHAR) \
- sbss_section (); \
+ if ((DECL) && sdata_symbolic_operand (XEXP (DECL_RTL (DECL), 0), Pmode)) \
+ switch_to_section (sbss_section); \
else \
- bss_section (); \
+ switch_to_section (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. */
+ 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 *real_name; \
- STRIP_NAME_ENCODING (real_name, NAME); \
- asm_fprintf (STREAM, "%U%s%s", real_name, \
- (ia64_asm_output_label ? "" : "#")); \
- } \
-while (0)
+#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. */
#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\""
-#undef CTORS_SECTION_ASM_OP
-#define CTORS_SECTION_ASM_OP "\t.section\t.ctors,\"aw\",\"progbits\""
-#undef DTORS_SECTION_ASM_OP
-#define DTORS_SECTION_ASM_OP "\t.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 (); \
- if (TARGET_NO_PIC || TARGET_AUTO_PIC) \
- fputs ("\tdata8\t ", FILE); \
- else \
- fputs ("\tdata8\t @fptr(", FILE); \
- assemble_name (FILE, NAME); \
- if (TARGET_NO_PIC || TARGET_AUTO_PIC) \
- fputs ("\n", FILE); \
- else \
- 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 (); \
- if (TARGET_NO_PIC || TARGET_AUTO_PIC) \
- fputs ("\tdata8\t ", FILE); \
- else \
- fputs ("\tdata8\t @fptr(", FILE); \
- assemble_name (FILE, NAME); \
- if (TARGET_NO_PIC || TARGET_AUTO_PIC) \
- fputs ("\n", FILE); \
- else \
- fputs (")\n", FILE); \
- } while (0)
-
-/* 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 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)
+ ia64_start_function(FILE,NAME,DECL)
/* We redefine this to use the ia64 .endp pseudo-op. */
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. */
-
-#undef ASM_FILE_START
-#define ASM_FILE_START(STREAM) \
-do { \
- output_file_directive (STREAM, main_input_filename); \
- emit_safe_across_calls (STREAM); \
-} while (0)
-
-/* 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 (); \
- } \
- /* This could be a CONSTRUCTOR containing ADDR_EXPR of a VAR_DECL, \
- in which case we can't put it in a shared library rodata. */ \
- else if (flag_pic && (RELOC)) \
- data_section (); \
- else \
- const_section (); \
-}
-
-/* Similarly for constant pool data. */
-
-extern unsigned int ia64_section_threshold;
-#undef SELECT_RTX_SECTION
-#define SELECT_RTX_SECTION(MODE, RTX) \
-{ \
- if (GET_MODE_SIZE (MODE) > 0 \
- && GET_MODE_SIZE (MODE) <= ia64_section_threshold) \
- sdata_section (); \
- else if (flag_pic && symbolic_operand ((RTX), (MODE))) \
- 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
+/* Override default elf definition. */
+#undef TARGET_ASM_RELOC_RW_MASK
+#define TARGET_ASM_RELOC_RW_MASK ia64_reloc_rw_mask
+#undef TARGET_ASM_SELECT_RTX_SECTION
+#define TARGET_ASM_SELECT_RTX_SECTION ia64_select_rtx_section
#define SDATA_SECTION_ASM_OP "\t.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 "\t.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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