Appleid arm-elf contribution from Philip Blundell and merged with Catherine

Moore's work.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@23364 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 166 insertions, 0 deletions

diff --git a/gcc/config/arm/unknown-elf.h b/gcc/config/arm/unknown-elf.h
new file mode 100644
index 00000000000..d23ba6f7f9a
--- /dev/null
+++ b/gcc/config/arm/unknown-elf.h
@@ -0,0 +1,166 @@
+/* Definitions for non-Linux based ARM systems using ELF
+   Copyright (C) 1998 Free Software Foundation, Inc.
+   Contributed by Catherine Moore <clm@cygnus.com>
+
+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 this program; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Run-time Target Specification.  */
+#define TARGET_VERSION	fputs (" (ARM non-Linux)", stderr);
+
+/* If you don't define HAVE_ATEXIT, and the object file format/OS/whatever 
+   does not support constructors/destructors, then gcc implements destructors
+   by defining its own exit function, which calls the destructors.  This gcc
+   exit function overrides the C library's exit function, and this can cause
+   all kinds of havoc if the C library has a non-trivial exit function.  You
+   really don't want to use the exit function in libgcc2.c.  */
+#define HAVE_ATEXIT
+
+/* Default to using APCS-32 and software floating point.  */
+#define TARGET_DEFAULT	(ARM_FLAG_SOFT_FLOAT | ARM_FLAG_APCS_32)
+
+/* Now we define the strings used to build the spec file.  */
+#define STARTFILE_SPEC	"crtbegin%O%s crt0%O%s"
+
+#define ENDFILE_SPEC	"crtend%O%s"
+
+#define USER_LABEL_PREFIX 	"_"	/* FIXME: This ought to be "" */
+#define LOCAL_LABEL_PREFIX 	"."
+
+#define TEXT_SECTION "		.text"
+
+#define INVOKE__main
+
+/* Debugging */
+#define DWARF_DEBUGGING_INFO
+#define DWARF2_DEBUGGING_INFO
+#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
+
+/* Support for Constructors and Destrcutors .  */
+#define READONLY_DATA_SECTION	rdata_section
+
+/* A list of other sections which the compiler might be "in" at any
+   given time.  */
+#define SUBTARGET_EXTRA_SECTIONS in_rdata,
+
+/* A list of extra section function definitions.  */
+#define SUBTARGET_EXTRA_SECTION_FUNCTIONS	RDATA_SECTION_FUNCTION
+  
+#define RDATA_SECTION_ASM_OP	"\t.section .rodata"
+
+#define RDATA_SECTION_FUNCTION 					\
+void								\
+rdata_section ()						\
+{								\
+  if (in_section != in_rdata)					\
+    {								\
+      fprintf (asm_out_file, "%s\n", RDATA_SECTION_ASM_OP);	\
+      in_section = in_rdata;					\
+    }								\
+}
+
+#define CTOR_LIST_BEGIN					\
+asm (CTORS_SECTION_ASM_OP);				\
+func_ptr __CTOR_LIST__[1] = { (func_ptr) (-1) }
+
+#define CTOR_LIST_END					\
+asm (CTORS_SECTION_ASM_OP);				\
+func_ptr __CTOR_END__[1] = { (func_ptr) 0 };
+
+#define DTOR_LIST_BEGIN					\
+asm (DTORS_SECTION_ASM_OP);				\
+func_ptr __DTOR_LIST__[1] = { (func_ptr) (-1) }
+
+#define DTOR_LIST_END					\
+asm (DTORS_SECTION_ASM_OP);				\
+func_ptr __DTOR_END__[1] = { (func_ptr) 0 };
+
+/* A C statement to output something to the assembler file to switch to section
+   NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
+   NULL_TREE.  Some target formats do not support arbitrary sections.  Do not
+   define this macro in such cases.  */
+#define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME, RELOC) \
+do {								\
+  if ((DECL) && TREE_CODE (DECL) == FUNCTION_DECL)		\
+    fprintf (STREAM, "\t.section %s,\"ax\",@progbits\n", (NAME));		\
+  else if ((DECL) && DECL_READONLY_SECTION (DECL, RELOC))	\
+    fprintf (STREAM, "\t.section %s,\"a\"\n", (NAME));		\
+  else								\
+    fprintf (STREAM, "\t.section %s,\"aw\"\n", (NAME));		\
+} while (0)
+
+/* Don't know how to order these.  UNALIGNED_WORD_ASM_OP is in
+   dwarf2.out. */ 
+#define UNALIGNED_WORD_ASM_OP ".4byte"
+
+#define ASM_OUTPUT_DWARF2_ADDR_CONST(FILE,ADDR)                  \
+     if (((ADDR)[0] == '.') && ((ADDR)[1] == 'L'))              \
+       fprintf ((FILE), "\t%s\t%s", UNALIGNED_WORD_ASM_OP, (ADDR));	\
+     else                  					\
+       fprintf ((FILE), "\t%s\t%s%s", 				\
+             UNALIGNED_WORD_ASM_OP, USER_LABEL_PREFIX, (ADDR))
+
+#define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,RTX)                   \
+do {								\
+  fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP);		\
+  output_addr_const ((FILE), (RTX));				\
+  fputc ('\n', (FILE));						\
+} while (0)
+
+
+/* The ARM development system defines __main.  */
+#define NAME__MAIN "__gccmain"
+#define SYMBOL__MAIN __gccmain
+
+#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
+#define UNIQUE_SECTION_P(DECL) (DECL_ONE_ONLY (DECL))
+#define UNIQUE_SECTION(DECL,RELOC)				\
+do {								\
+  int len;							\
+  char *name, *string, *prefix;					\
+								\
+  name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL));	\
+								\
+  if (! DECL_ONE_ONLY (DECL))					\
+    {								\
+      prefix = ".";                                             \
+      if (TREE_CODE (DECL) == FUNCTION_DECL)			\
+	prefix = ".text.";					\
+      else if (DECL_READONLY_SECTION (DECL, RELOC))		\
+	prefix = ".rodata.";					\
+      else							\
+	prefix = ".data.";					\
+    }								\
+  else if (TREE_CODE (DECL) == FUNCTION_DECL)			\
+    prefix = ".gnu.linkonce.t.";				\
+  else if (DECL_READONLY_SECTION (DECL, RELOC))			\
+    prefix = ".gnu.linkonce.r.";				\
+  else								\
+    prefix = ".gnu.linkonce.d.";				\
+								\
+  len = strlen (name) + strlen (prefix);			\
+  string = alloca (len + 1);					\
+  sprintf (string, "%s%s", prefix, name);			\
+								\
+  DECL_SECTION_NAME (DECL) = build_string (len, string);	\
+} while (0)
+
+#define CPP_APCS_PC_DEFAULT_SPEC	"-D__APCS_32__"
+#define SUBTARGET_CPU_DEFAULT 		TARGET_CPU_arm7tdmi
+     
+/* Now get the routine arm-elf definitions.  */
+#include "arm/elf.h"