-/* Target definitions for GNU compiler for Sparc running System V.4
- Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+/* Target definitions for GNU compiler for SPARC running System V.4
+ Copyright (C) 1991, 1992, 1995, 1996, 1997, 1998, 2000, 2002, 2007
+ Free Software Foundation, Inc.
+ Contributed by Ron Guilmette (rfg@monkeys.com).
- Written by Ron Guilmette (rfg@ncd.com).
+This file is part of GCC.
-This file is part of GNU CC.
-
-GNU CC is free software; you can redistribute it and/or modify
+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 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
-GNU CC is distributed in the hope that it will be useful,
+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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
-#include "sparc/sparc.h"
+#ifndef TARGET_VERSION
+#define TARGET_VERSION fprintf (stderr, " (sparc ELF)");
+#endif
-/* Undefine some symbols which are defined in "sparc.h" but which are
- appropriate only for SunOS 4.x, and not for svr4. */
+/* ??? Put back the SIZE_TYPE/PTRDIFF_TYPE definitions set by sparc.h.
+ Why, exactly, is svr4.h messing with this? Seems like the chip
+ would know best. */
-#undef DBX_DEBUGGING_INFO
-#undef WORD_SWITCH_TAKES_ARG
-#undef SELECT_SECTION
-#undef ASM_DECLARE_FUNCTION_NAME
-#undef TEXT_SECTION_ASM_OP
-#undef DATA_SECTION_ASM_OP
+#undef SIZE_TYPE
+#define SIZE_TYPE (TARGET_ARCH64 ? "long unsigned int" : "unsigned int")
-#include "svr4.h"
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE (TARGET_ARCH64 ? "long int" : "int")
/* Undefined some symbols which are defined in "svr4.h" but which are
appropriate only for typical svr4 systems, but not for the specific
- case of svr4 running on a Sparc. */
+ case of svr4 running on a SPARC. */
-#undef CTORS_SECTION_ASM_OP
-#undef DTORS_SECTION_ASM_OP
#undef INIT_SECTION_ASM_OP
-#undef CONST_SECTION_ASM_OP
+#undef FINI_SECTION_ASM_OP
+#undef READONLY_DATA_SECTION_ASM_OP
#undef TYPE_OPERAND_FMT
#undef PUSHSECTION_FORMAT
#undef STRING_ASM_OP
#undef SKIP_ASM_OP
#undef SET_ASM_OP /* Has no equivalent. See ASM_OUTPUT_DEF below. */
-/* Provide a set of pre-definitions and pre-assertions appropriate for
- the Sparc running svr4. __svr4__ is our extension. */
-
-#define CPP_PREDEFINES \
- "-Dsparc -Dunix -D__svr4__ \
- -Asystem(unix) -Asystem(svr4) -Acpu(sparc) -Amachine(sparc) \
- -D__GCC_NEW_VARARGS__"
-
-/* The native assembler can't compute differences between symbols in different
- sections when generating pic code, so we must put jump tables in the
- text section. */
-#define JUMP_TABLES_IN_TEXT_SECTION 1
-
-/* The specialized code which needs to appear in the .init section prior
- to the prologue code for `__do_global_ctors' (see crtstuff.c).
-
- On Sparcs running svr4, the /usr/ccs/lib/crti.o file (with gets linked
- in prior to the crtbegin.o file) has a single `save' instruction in its
- .init section. That `save' instruction tries to setup a stack frame for
- the sake of any subsequent code in the .init section. Unfortunately,
- the size it uses for the stack frame is only a guess, and is not really
- adequate for our purposes. More importantly, we independently put our
- own standard function prologue (for __do_global_ctors) into the .init
- section and that function prologue includes its own `save' instruction!
- Thus, unless we do something to correct the situation, we'll get *two*
- stack frames allocated when crt0.o calls the code in the .init section,
- and havoc will ensue. The following macro definition prevents such woes.
-*/
-
-#define INIT_SECTION_PREAMBLE asm ("restore")
+/* Pass -K to the assembler when PIC. */
+#undef ASM_SPEC
+#define ASM_SPEC \
+ "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
+ %{fpic|fPIC|fpie|fPIE:-K PIC} %(asm_cpu)"
-/* This is the string used to begin an assembly language comment for the
- Sparc/svr4 assembler. */
-
-#define ASM_COMMENT_START "!"
-
-/* Define the names of various pseudo-op used by the Sparc/svr4 assembler.
+/* Define the names of various pseudo-op used by the SPARC/svr4 assembler.
Note that many of these are different from the typical pseudo-ops used
by most svr4 assemblers. That is probably due to a (misguided?) attempt
- to keep the Sparc/svr4 assembler somewhat compatible with the Sparc/SunOS
+ to keep the SPARC/svr4 assembler somewhat compatible with the SPARC/SunOS
assembler. */
-#define STRING_ASM_OP ".asciz"
-#define COMMON_ASM_OP ".common"
-#define SKIP_ASM_OP ".skip"
-#define UNALIGNED_INT_ASM_OP ".uaword"
-#define UNALIGNED_SHORT_ASM_OP ".uahalf"
-#define PUSHSECTION_ASM_OP ".pushsection"
-#define POPSECTION_ASM_OP ".popsection"
+#define STRING_ASM_OP "\t.asciz\t"
+#define COMMON_ASM_OP "\t.common\t"
+#define SKIP_ASM_OP "\t.skip\t"
+#define PUSHSECTION_ASM_OP "\t.pushsection\t"
+#define POPSECTION_ASM_OP "\t.popsection"
/* This is the format used to print the second operand of a .type pseudo-op
- for the Sparc/svr4 assembler. */
+ for the SPARC/svr4 assembler. */
#define TYPE_OPERAND_FMT "#%s"
/* This is the format used to print a .pushsection pseudo-op (and its operand)
- for the Sparc/svr4 assembler. */
+ for the SPARC/svr4 assembler. */
-#define PUSHSECTION_FORMAT "\t%s\t\"%s\"\n"
+#define PUSHSECTION_FORMAT "%s\"%s\"\n"
#undef ASM_OUTPUT_CASE_LABEL
#define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, JUMPTABLE) \
-do { ASM_OUTPUT_ALIGN ((FILE), 2); \
- ASM_OUTPUT_INTERNAL_LABEL ((FILE), PREFIX, NUM); \
+do { ASM_OUTPUT_ALIGN ((FILE), Pmode == SImode ? 2 : 3); \
+ (*targetm.asm_out.internal_label) ((FILE), PREFIX, NUM); \
} while (0)
/* This is how to equate one symbol to another symbol. The syntax used is
fprintf (FILE, "\n"); \
} while (0)
-/* Define how the Sparc registers should be numbered for Dwarf output.
- The numbering provided here should be compatible with the native
- svr4 SDB debugger in the Sparc/svr4 reference port. The numbering
- is as follows:
-
- Assembly name gcc internal regno Dwarf regno
- ----------------------------------------------------------
- g0-g7 0-7 0-7
- o0-o7 8-15 8-15
- l0-l7 16-23 16-23
- i0-i7 24-31 24-31
- f0-f31 32-63 40-71
-*/
-
-#define DBX_REGISTER_NUMBER(REGNO) \
- (((REGNO) < 32) ? (REGNO) \
- : ((REGNO) < 63) ? ((REGNO) + 8) \
- : (abort (), 0))
-
/* A set of symbol definitions for assembly pseudo-ops which will
get us switched to various sections of interest. These are used
in all places where we simply want to switch to a section, and
*not* to push the previous section name onto the assembler's
section names stack (as we do often in dwarfout.c). */
-#define TEXT_SECTION_ASM_OP ".section\t\".text\""
-#define DATA_SECTION_ASM_OP ".section\t\".data\""
-#define BSS_SECTION_ASM_OP ".section\t\".bss\""
-#define CONST_SECTION_ASM_OP ".section\t\".rodata\""
-#define INIT_SECTION_ASM_OP ".section\t\".init\",#alloc"
-#define CTORS_SECTION_ASM_OP ".section\t\".ctors\",#alloc"
-#define DTORS_SECTION_ASM_OP ".section\t\".dtors\",#alloc"
-
-/* Assemble generic sections.
- This is currently only used to support section attributes. */
-
-#define ASM_OUTPUT_SECTION_NAME(FILE, NAME) \
- fprintf (FILE, ".section\t\"%s\"\n", NAME)
-
-/* If the host and target formats match, output the floats as hex. */
-#if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT
-#if defined (HOST_WORDS_BIG_ENDIAN) == WORDS_BIG_ENDIAN
-
-/* This is how to output assembly code to define a `float' constant.
- We always have to use a .long pseudo-op to do this because the native
- SVR4 ELF assembler is buggy and it generates incorrect values when we
- try to use the .float pseudo-op instead. */
-
-#undef ASM_OUTPUT_FLOAT
-#define ASM_OUTPUT_FLOAT(FILE,VALUE) \
-do { long value; \
- REAL_VALUE_TO_TARGET_SINGLE ((VALUE), value); \
- fprintf((FILE), "\t.long\t0x%x\n", value); \
- } while (0)
+#define TEXT_SECTION_ASM_OP "\t.section\t\".text\""
+#define DATA_SECTION_ASM_OP "\t.section\t\".data\""
+#define BSS_SECTION_ASM_OP "\t.section\t\".bss\""
+#define READONLY_DATA_SECTION_ASM_OP "\t.section\t\".rodata\""
+#define INIT_SECTION_ASM_OP "\t.section\t\".init\""
+#define FINI_SECTION_ASM_OP "\t.section\t\".fini\""
+
+/* 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.) */
+
+#undef CTORS_SECTION_ASM_OP
+#define CTORS_SECTION_ASM_OP "\t.section\t\".ctors\",#alloc,#write"
+#undef DTORS_SECTION_ASM_OP
+#define DTORS_SECTION_ASM_OP "\t.section\t\".dtors\",#alloc,#write"
-/* This is how to output assembly code to define a `double' constant.
- We always have to use a pair of .long pseudo-ops to do this because
- the native SVR4 ELF assembler is buggy and it generates incorrect
- values when we try to use the the .double pseudo-op instead. */
-
-#undef ASM_OUTPUT_DOUBLE
-#define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
-do { long value[2]; \
- REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), value); \
- fprintf((FILE), "\t.long\t0x%x\n", value[0]); \
- fprintf((FILE), "\t.long\t0x%x\n", value[1]); \
- } while (0)
+/* Switch into a generic section. */
+#undef TARGET_ASM_NAMED_SECTION
+#define TARGET_ASM_NAMED_SECTION sparc_elf_asm_named_section
-#endif /* word order matches */
-#endif /* HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT */
+#undef ASM_OUTPUT_ALIGNED_BSS
+#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
+ asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
-/* This is how to output an assembler line defining a `long double'
- constant. */
+/* Override the name of the mcount profiling function. */
-#undef ASM_OUTPUT_LONG_DOUBLE
-#define ASM_OUTPUT_LONG_DOUBLE(FILE,VALUE) \
-do { long value[4]; \
- REAL_VALUE_TO_TARGET_LONG_DOUBLE ((VALUE), value); \
- fprintf((FILE), "\t.long\t0x%x\n", value[0]); \
- fprintf((FILE), "\t.long\t0x%x\n", value[1]); \
- fprintf((FILE), "\t.long\t0x%x\n", value[2]); \
- fprintf((FILE), "\t.long\t0x%x\n", value[3]); \
- } while (0)
+#undef MCOUNT_FUNCTION
+#define MCOUNT_FUNCTION "*_mcount"
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