Initial revision

From-SVN: r10679

4 files changed, 856 insertions, 0 deletions

diff --git a/gcc/config/arm/aof.h b/gcc/config/arm/aof.h
new file mode 100644
index 0000000..5af670b
--- /dev/null
+++ b/gcc/config/arm/aof.h
@@ -0,0 +1,480 @@
+/* Definitions of target machine for GNU compiler, for Advanced RISC Machines
+   ARM compilation, AOF Assembler.
+   Copyright (C) 1995 Free Software Foundation, Inc.
+   Contributed by Richard Earnshaw (rearnsha@armltd.co.uk)
+
+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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+   
+
+
+#define AOF_ASSEMBLER
+
+#define LINK_LIBGCC_SPECIAL 1
+
+#define LINK_SPEC "%{aof} %{bin} %{aif} %{ihf} %{shl,*} %{reent*} %{split} \
+		   %{ov*,*} %{reloc*} -nodebug"
+
+#define STARTFILE_SPEC "crtbegin.o%s"
+
+#define ENDFILE_SPEC "crtend.o%s"
+
+#ifndef ASM_SPEC
+#define ASM_SPEC "%{g -g} -arch 4 \
+-apcs 3%{mapcs-32:/32bit}%{mapcs-26:/26bit}%{!mapcs-26:%{!macps-32:/26bit}}"
+#endif
+
+#ifndef LIB_SPEC
+#define LIB_SPEC "%{Eb: armlib_h.32b%s}%{!Eb: armlib_h.32l%s}"
+#endif
+
+#define LIBGCC_SPEC "libgcc.a%s"
+
+/* Dividing the Output into Sections (Text, Data, ...) */
+/* AOF Assembler syntax is a nightmare when it comes to areas, since once
+   we change from one area to another, we can't go back again.  Instead,
+   we must create a new area with the same attributes and add the new output
+   to that.  Unfortunately, there is nothing we can do here to guarantee that
+   two areas with the same attributes will be linked adjacently in the
+   resulting executable, so we have to be careful not to do pc-relative 
+   addressing across such boundaries.  This isn't a major problem for thumb,
+   since the range of such addressing modes is so limited that it would
+   rarely be useful anyway. */
+char *aof_text_section ();
+#define TEXT_SECTION_ASM_OP \
+  aof_text_section (in_section == in_readonly_data)
+
+#define SELECT_RTX_SECTION(MODE,RTX) text_section ();
+
+char *aof_data_section ();
+#define DATA_SECTION_ASM_OP aof_data_section ()
+
+#define EXTRA_SECTIONS in_zero_init, in_readonly_data, in_ctor, in_dtor
+
+#define EXTRA_SECTION_FUNCTIONS	\
+ZERO_INIT_SECTION		\
+READONLYDATA_SECTION		\
+CTOR_SECTION			\
+DTOR_SECTION
+
+#define ZERO_INIT_SECTION					\
+void								\
+zero_init_section ()						\
+{								\
+  static int zero_init_count = 1;				\
+  if (in_section != in_zero_init)				\
+    {								\
+      fprintf (asm_out_file, "\tAREA |C$$zidata%d|,NOINIT\n",	\
+	       zero_init_count++);				\
+      in_section = in_zero_init;				\
+    }								\
+}
+
+#define READONLYDATA_SECTION						\
+void									\
+readonly_data ()							\
+{									\
+  extern int arm_text_section_count;					\
+  if (in_section != in_readonly_data)					\
+    {									\
+      if (in_section != in_text)					\
+	{								\
+	  fprintf (asm_out_file,					\
+		   "\tAREA |C$$code%d|, CODE, READONLY",		\
+		   arm_text_section_count++);				\
+	  if (flag_pic)							\
+	    fputs (", PIC, REENTRANT", asm_out_file);			\
+	  fputc ('\n', asm_out_file);		 			\
+	}	 							\
+      in_section = in_readonly_data;					\
+    }									\
+}									\
+									\
+int									\
+in_readonly_data_section ()						\
+{									\
+  return in_section == in_readonly_data;				\
+}
+
+#define CTOR_SECTION							\
+void									\
+ctor_section ()								\
+{									\
+  static int ctors_once = 0;						\
+  if (in_section != in_ctor)						\
+    {									\
+      if (ctors_once)							\
+	{								\
+	  fprintf (stderr,						\
+		   "Attempt to output more than one ctor section\n");	\
+	  abort ();							\
+	}								\
+      fprintf (asm_out_file, "\t%s\n", CTORS_SECTION_ASM_OP);		\
+      in_section = in_ctor;						\
+      ctors_once = 1;							\
+    }									\
+}
+
+#define DTOR_SECTION							\
+void									\
+dtor_section ()								\
+{									\
+  static int dtors_once = 0;						\
+  if (in_section != in_dtor)						\
+    {									\
+      if (dtors_once)							\
+	{								\
+	  fprintf (stderr,						\
+		   "Attempt to output more than one dtor section\n");	\
+	  abort ();							\
+	}								\
+      fprintf (asm_out_file, "\t%s\n", DTORS_SECTION_ASM_OP);		\
+      in_section = in_dtor;						\
+      dtors_once = 1;							\
+    }									\
+}
+
+#define CTOR_LIST_BEGIN					\
+asm (CTORS_SECTION_ASM_OP);				\
+extern func_ptr __CTOR_END__[1];			\
+func_ptr __CTOR_LIST__[1] = {__CTOR_END__};
+
+#define CTOR_LIST_END					\
+asm (CTORS_SECTION_ASM_OP);				\
+func_ptr __CTOR_END__[1] = { (func_ptr) 0 };
+
+#define DO_GLOBAL_CTORS_BODY		\
+do {					\
+  func_ptr *ptr = __CTOR_LIST__ + 1;	\
+  while (*ptr)				\
+    (*ptr++) ();			\
+} while (0)
+
+#define DTOR_LIST_BEGIN					\
+asm (DTORS_SECTION_ASM_OP);				\
+extern func_ptr __DTOR_END__[1];			\
+func_ptr __DTOR_LIST__[1] = {__DTOR_END__};
+
+#define DTOR_LIST_END					\
+asm (DTORS_SECTION_ASM_OP);				\
+func_ptr __DTOR_END__[1] = { (func_ptr) 0 };
+
+#define DO_GLOBAL_DTORS_BODY		\
+do {					\
+  func_ptr *ptr = __DTOR_LIST__ + 1;	\
+  while (*ptr)				\
+    (*ptr++) ();			\
+} while (0)
+#define READONLY_DATA_SECTION readonly_data
+
+#define JUMP_TABLES_IN_TEXT_SECTION 1
+
+#ifndef ARM_OS_NAME
+#define ARM_OS_NAME "(generic)"
+#endif
+
+/* For the AOF linker, we need to reference __main to force the standard
+   library to get linked in. */
+
+#define ASM_FILE_START(STREAM)					\
+{								\
+  extern char *version_string;					\
+  fprintf ((STREAM), "%s Generated by gcc %s for ARM/%s\n", 	\
+	   ASM_COMMENT_START, version_string, ARM_OS_NAME);	\
+  fprintf ((STREAM), "__a1\tRN\t0\n");				\
+  fprintf ((STREAM), "__a2\tRN\t1\n");				\
+  fprintf ((STREAM), "__a3\tRN\t2\n");				\
+  fprintf ((STREAM), "__a4\tRN\t3\n");				\
+  fprintf ((STREAM), "__v1\tRN\t4\n");				\
+  fprintf ((STREAM), "__v2\tRN\t5\n");				\
+  fprintf ((STREAM), "__v3\tRN\t6\n");				\
+  fprintf ((STREAM), "__v4\tRN\t7\n");				\
+  fprintf ((STREAM), "__v5\tRN\t8\n");				\
+  fprintf ((STREAM), "__v6\tRN\t9\n");				\
+  fprintf ((STREAM), "__sl\tRN\t10\n");				\
+  fprintf ((STREAM), "__fp\tRN\t11\n");				\
+  fprintf ((STREAM), "__ip\tRN\t12\n");				\
+  fprintf ((STREAM), "__sp\tRN\t13\n");				\
+  fprintf ((STREAM), "__lr\tRN\t14\n");				\
+  fprintf ((STREAM), "__pc\tRN\t15\n");				\
+  fprintf ((STREAM), "__f0\tFN\t0\n");				\
+  fprintf ((STREAM), "__f1\tFN\t1\n");				\
+  fprintf ((STREAM), "__f2\tFN\t2\n");				\
+  fprintf ((STREAM), "__f3\tFN\t3\n");				\
+  fprintf ((STREAM), "__f4\tFN\t4\n");				\
+  fprintf ((STREAM), "__f5\tFN\t5\n");				\
+  fprintf ((STREAM), "__f6\tFN\t6\n");				\
+  fprintf ((STREAM), "__f7\tFN\t7\n");				\
+  text_section ();						\
+}
+
+/* Some systems use __main in a way incompatible with its use in gcc, in these
+   cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
+   give the same symbol without quotes for an alternative entry point.  You
+   must define both, or niether. */
+#define NAME__MAIN "__gccmain"
+#define SYMBOL__MAIN __gccmain
+
+#define ASM_FILE_END(STREAM)		\
+do					\
+{					\
+  if (flag_pic)				\
+    aof_dump_pic_table (STREAM);	\
+  aof_dump_imports (STREAM);		\
+  fputs ("\tEND\n", (STREAM));		\
+} while (0);
+
+#define ASM_IDENTIFY_GCC(STREAM) fputs ("|gcc2_compiled.|\n", (STREAM))
+
+#define ASM_COMMENT_START ";"
+
+#define ASM_APP_ON ""
+
+#define ASM_APP_OFF ""
+
+#define ASM_OUTPUT_LONG_DOUBLE(STREAM,VALUE) \
+  ASM_OUTPUT_DOUBLE((STREAM),(VALUE))
+
+#define ASM_OUTPUT_DOUBLE(STREAM,VALUE)				\
+do {								\
+  char dstr[30];						\
+  long l[2];							\
+  REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), l);			\
+  REAL_VALUE_TO_DECIMAL ((VALUE), "%.14g", dstr);		\
+  fprintf ((STREAM), "\tDCD &%lx, &%lx\t%s double %s\n",	\
+	   l[0], l[1], ASM_COMMENT_START, dstr);		\
+} while (0)
+
+#define ASM_OUTPUT_FLOAT(STREAM,VALUE)			\
+do {							\
+  char dstr[30];					\
+  long l;						\
+  REAL_VALUE_TO_TARGET_SINGLE ((VALUE), l);		\
+  REAL_VALUE_TO_DECIMAL ((VALUE), "%.7g", dstr);	\
+  fprintf ((STREAM), "\tDCD &%lx\t%s double %s\n",	\
+	   l, ASM_COMMENT_START, dstr);			\
+} while (0)
+
+#define ASM_OUTPUT_INT(STREAM,VALUE)		\
+  (fprintf ((STREAM), "\tDCD\t"),		\
+   output_addr_const ((STREAM), (VALUE)),	\
+   fputc ('\n', (STREAM)))
+
+#define ASM_OUTPUT_SHORT(STREAM,VALUE)		\
+  (fprintf ((STREAM), "\tDCW\t"),		\
+   output_addr_const ((STREAM), (VALUE)),	\
+   fputc ('\n', (STREAM)))
+
+#define ASM_OUTPUT_CHAR(STREAM,VALUE)		\
+  (fprintf ((STREAM), "\tDCB\t"),		\
+   output_addr_const ((STREAM), (VALUE)),	\
+   fputc ('\n', (STREAM)))
+
+#define ASM_OUTPUT_BYTE(STREAM,VALUE)		\
+  fprintf ((STREAM), "\tDCB\t%d\n", (VALUE))
+
+#define ASM_OUTPUT_ASCII(STREAM,PTR,LEN)		\
+{							\
+  int i;						\
+  char *ptr = (PTR);					\
+  fprintf ((STREAM), "\tDCB");				\
+  for (i = 0; i < (LEN); i++)				\
+    fprintf ((STREAM), " &%02x%s", 			\
+	     (unsigned ) *(ptr++),			\
+	     (i + 1 < (LEN)				\
+	      ? ((i & 3) == 3 ? "\n\tDCB" : ",")	\
+	      : "\n"));					\
+}
+
+#define IS_ASM_LOGICAL_LINE_SEPARATOR(C) ((C) == '\n')
+
+#define ASM_OPEN_PAREN "("
+#define ASM_CLOSE_PAREN ")"
+
+/* Output of Uninitialized Variables */
+
+#define ASM_OUTPUT_COMMON(STREAM,NAME,SIZE,ROUNDED)		\
+  (fprintf ((STREAM), "\tAREA "),				\
+   assemble_name ((STREAM), (NAME)),				\
+   fprintf ((STREAM), ", DATA, COMMON\n\t%% %d\t%s size=%d\n",	\
+	    (ROUNDED), ASM_COMMENT_START, SIZE))
+
+#define ASM_OUTPUT_LOCAL(STREAM,NAME,SIZE,ROUNDED)	\
+   (zero_init_section (),				\
+    assemble_name ((STREAM), (NAME)),			\
+    fprintf ((STREAM), "\n"),				\
+    fprintf ((STREAM), "\t%% %d\t%s size=%d\n",		\
+	     (ROUNDED), ASM_COMMENT_START, SIZE))
+
+/* Output and Generation of Labels */
+
+extern int arm_main_function;
+
+#define ASM_GLOBALIZE_LABEL(STREAM,NAME)		\
+do {							\
+  fprintf ((STREAM), "\tEXPORT\t");			\
+  assemble_name ((STREAM), (NAME));			\
+  fputc ('\n', (STREAM));				\
+  if ((NAME)[0] == 'm' && ! strcmp ((NAME), "main"))	\
+    arm_main_function = 1;				\
+} while (0)
+
+#define ARM_OUTPUT_LABEL(STREAM,NAME)	\
+do {					\
+  assemble_name (STREAM,NAME);		\
+  fputs ("\n", STREAM);			\
+} while (0)
+
+#define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL)	\
+{							\
+  if (output_bytecode)					\
+    BC_OUTPUT_LABEL (STREAM, NAME);			\
+  else							\
+    {							\
+      ASM_OUTPUT_LABEL (STREAM, NAME);			\
+      if (! TREE_PUBLIC (DECL))				\
+	{						\
+	  fputs ("\tKEEP ", STREAM);			\
+	  ASM_OUTPUT_LABEL (STREAM, NAME);		\
+	}						\
+      aof_delete_import ((NAME));			\
+    }							\
+}
+
+#define ASM_DECLARE_OBJECT_NAME(STREAM,NAME,DECL) \
+{						\
+  if (output_bytecode)				\
+    BC_OUTPUT_LABEL (STREAM, NAME);		\
+  else						\
+    {						\
+      ASM_OUTPUT_LABEL (STREAM, NAME);		\
+      if (! TREE_PUBLIC (DECL))			\
+	{					\
+	  fputs ("\tKEEP ", STREAM);		\
+	  ASM_OUTPUT_LABEL (STREAM, NAME);	\
+	}					\
+      aof_delete_import ((NAME));		\
+    }						\
+}
+
+#define ASM_OUTPUT_EXTERNAL(STREAM,DECL,NAME)	\
+ aof_add_import ((NAME))
+
+#define ASM_OUTPUT_EXTERNAL_LIBCALL(STREAM,SYMREF)	\
+ (fprintf ((STREAM), "\tIMPORT\t"),			\
+  assemble_name ((STREAM), XSTR ((SYMREF), 0)),		\
+  fputc ('\n', (STREAM)))
+
+#define ASM_OUTPUT_LABELREF(STREAM,NAME)	\
+  fprintf ((STREAM), "|%s|", NAME)
+
+#define ASM_GENERATE_INTERNAL_LABEL(STRING,PREFIX,NUM)	\
+  sprintf ((STRING), "*|%s..%d|", (PREFIX), (NUM))
+
+#define ASM_FORMAT_PRIVATE_NAME(OUTVAR,NAME,NUMBER)	\
+ ((OUTVAR) = (char *) alloca (strlen ((NAME)) + 10),	\
+  sprintf ((OUTVAR), "%s.%d", (NAME), (NUMBER)))
+
+/* How initialization functions are handled */
+
+#define CTORS_SECTION_ASM_OP "AREA\t|C$$gnu_ctorsvec|, DATA, READONLY"
+#define DTORS_SECTION_ASM_OP "AREA\t|C$$gnu_dtorsvec|, DATA, READONLY"
+
+#define ASM_OUTPUT_CONSTRUCTOR(STREAM,NAME)	\
+do {						\
+  ctor_section ();				\
+  fprintf ((STREAM), "\tDCD\t");		\
+  assemble_name ((STREAM), (NAME));		\
+  fputc ('\n', (STREAM));			\
+} while (0);
+
+#define ASM_OUTPUT_DESTRUCTOR(STREAM,NAME)	\
+do {						\
+  dtor_section ();				\
+  fprintf ((STREAM), "\tDCD\t");		\
+  assemble_name ((STREAM), (NAME));		\
+  fputc ('\n', (STREAM));			\
+} while (0);
+
+/* Output of Assembler Instructions */
+
+#define REGISTER_NAMES			\
+{					\
+  "a1", "a2", "a3", "a4",	\
+  "v1", "v2", "v3", "v4",	\
+  "v5", "v6", "sl", "fp",	\
+  "ip", "sp", "lr", "pc",	\
+  "f0", "f1", "f2", "f3",	\
+  "f4", "f5", "f6", "f7",	\
+  "cc", "sfp", "afp"		\
+}
+
+#define ADDITIONAL_REGISTER_NAMES		\
+{						\
+  {"r0", 0}, {"a1", 0},				\
+  {"r1", 1}, {"a2", 1},				\
+  {"r2", 2}, {"a3", 2},				\
+  {"r3", 3}, {"a4", 3},		      		\
+  {"r4", 4}, {"v1", 4},				\
+  {"r5", 5}, {"v2", 5},				\
+  {"r6", 6}, {"v3", 6},				\
+  {"r7", 7}, {"wr", 7},				\
+  {"r8", 8}, {"v5", 8},				\
+  {"r9", 9}, {"v6", 9},				\
+  {"r10", 10}, {"sl", 10}, {"v7", 10},		\
+  {"r11", 11}, {"fp", 11},			\
+  {"r12", 12}, {"ip", 12}, 			\
+  {"r13", 13}, {"sp", 13}, 			\
+  {"r14", 14}, {"lr", 14},			\
+  {"r15", 15}, {"pc", 15}			\
+}
+
+#define REGISTER_PREFIX "__"
+#define USER_LABEL_PREFIX ""
+#define LOCAL_LABEL_PREFIX ""
+
+/* Output of Dispatch Tables */
+
+#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM,VALUE,REL)		\
+  fprintf ((STREAM), "\tb\t|L..%d|\n", (VALUE))
+
+#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM,VALUE)	\
+  fprintf ((STREAM), "\tDCD\t|L..%d|\n", (VALUE))
+
+/* A label marking the start of a jump table is a data label. */
+#define ASM_OUTPUT_CASE_LABEL(STREAM,PREFIX,NUM,TABLE)	\
+  fprintf ((STREAM), "\tALIGN\n|%s..%d|\n", (PREFIX), (NUM))
+
+/* Assembler Commands for Alignment */
+
+#define ASM_OUTPUT_SKIP(STREAM,NBYTES)		\
+ fprintf ((STREAM), "\t%%\t%d\n", (NBYTES))
+
+#define ASM_OUTPUT_ALIGN(STREAM,POWER)			\
+do {							\
+  register int amount = 1 << (POWER);			\
+  if (amount == 2)					\
+    fprintf ((STREAM), "\tALIGN 2\n");			\
+  else if (amount == 4)					\
+    fprintf ((STREAM), "\tALIGN\n");			\
+  else							\
+    fprintf ((STREAM), "\tALIGN %d\n", amount);		\
+} while (0)
+
+#include "arm/arm.h"
+
+#undef DBX_DEBUGGING_INFO
diff --git a/gcc/config/arm/aout.h b/gcc/config/arm/aout.h
new file mode 100644
index 0000000..7a4f29f
--- /dev/null
+++ b/gcc/config/arm/aout.h
@@ -0,0 +1,264 @@
+/* Definitions of target machine for GNU compiler, for ARM with a.out
+   Copyright (C) 1995 Free Software Foundation, Inc.
+   Contributed by Richard Earnshaw (rearnsha@armltd.co.uk)
+   
+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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#ifndef ARM_OS_NAME
+#define ARM_OS_NAME "(generic)"
+#endif
+
+/* The text to go at the start of the assembler file */
+#define ASM_FILE_START(STREAM)						  \
+{									  \
+  extern char *version_string;						  \
+  fprintf (STREAM,"%s Generated by gcc %s for ARM/%s\n",		  \
+	   ASM_COMMENT_START, version_string, ARM_OS_NAME);		  \
+  fprintf (STREAM,"%srfp\t.req\t%sr9\n", REGISTER_PREFIX, REGISTER_PREFIX); \
+  fprintf (STREAM,"%ssl\t.req\t%sr10\n", REGISTER_PREFIX, REGISTER_PREFIX); \
+  fprintf (STREAM,"%sfp\t.req\t%sr11\n", REGISTER_PREFIX, REGISTER_PREFIX); \
+  fprintf (STREAM,"%sip\t.req\t%sr12\n", REGISTER_PREFIX, REGISTER_PREFIX); \
+  fprintf (STREAM,"%ssp\t.req\t%sr13\n", REGISTER_PREFIX, REGISTER_PREFIX); \
+  fprintf (STREAM,"%slr\t.req\t%sr14\n", REGISTER_PREFIX, REGISTER_PREFIX); \
+  fprintf (STREAM,"%spc\t.req\t%sr15\n", REGISTER_PREFIX, REGISTER_PREFIX); \
+}
+
+#define ASM_APP_ON  ""
+#define ASM_APP_OFF  ""
+
+/* Switch to the text or data segment.  */
+#define TEXT_SECTION_ASM_OP  ".text"
+#define DATA_SECTION_ASM_OP  ".data"
+
+#define REGISTER_PREFIX ""
+#define USER_LABEL_PREFIX "_"
+#define LOCAL_LABEL_PREFIX ""
+
+/* The assembler's names for the registers.  */
+#ifndef REGISTER_NAMES
+#define REGISTER_NAMES  \
+{				                   \
+  "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",  \
+  "r8", "r9", "sl", "fp", "ip", "sp", "lr", "pc",  \
+  "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",  \
+  "cc", "sfp", "afp"				   \
+}
+#endif
+
+#ifndef ADDITIONAL_REGISTER_NAMES
+#define ADDITIONAL_REGISTER_NAMES		\
+{						\
+  {"a1", 0},					\
+  {"a2", 1},					\
+  {"a3", 2},					\
+  {"a4", 3},					\
+  {"v1", 4},					\
+  {"v2", 5},					\
+  {"v3", 6},					\
+  {"v4", 7},					\
+  {"v5", 8},					\
+  {"v6", 9},					\
+  {"rfp", 9}, /* Gcc used to call it this */	\
+  {"sb", 9},					\
+  {"v7", 10},					\
+  {"r10", 10},	/* sl */			\
+  {"r11", 11},	/* fp */			\
+  {"r12", 12},	/* ip */			\
+  {"r13", 13},	/* sp */			\
+  {"r14", 14},	/* lr */			\
+  {"r15", 15}	/* pc */			\
+}
+#endif
+
+/* Arm Assembler barfs on dollars */
+#define DOLLARS_IN_IDENTIFIERS 0
+
+#define NO_DOLLAR_IN_LABEL
+
+/* DBX register number for a given compiler register number */
+#define DBX_REGISTER_NUMBER(REGNO)  (REGNO)
+
+/* Generate DBX debugging information.  riscix.h will undefine this because
+   the native assembler does not support stabs. */
+#define DBX_DEBUGGING_INFO  1
+
+/* Acorn dbx moans about continuation chars, so don't use any.  */
+#ifndef DBX_CONTIN_LENGTH
+#define DBX_CONTIN_LENGTH  0
+#endif
+
+/* Output a source filename for the debugger. RISCiX dbx insists that the
+   ``desc'' field is set to compiler version number >= 315 (sic).  */
+#define DBX_OUTPUT_MAIN_SOURCE_FILENAME(STREAM,NAME) 			\
+do {									\
+  fprintf (STREAM, ".stabs \"%s\",%d,0,315,%s\n", (NAME), N_SO,		\
+	   &ltext_label_name[1]);					\
+  text_section ();							\
+  ASM_OUTPUT_INTERNAL_LABEL (STREAM, "Ltext", 0);			\
+} while (0)
+  
+/* Output a function label definition.  */
+#define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL) \
+    ASM_OUTPUT_LABEL(STREAM, NAME)
+
+#define ARM_OUTPUT_LABEL(STREAM,NAME)	\
+do {					\
+  assemble_name (STREAM,NAME);		\
+  fputs (":\n", STREAM);		\
+} while (0)
+
+/* Output a globalising directive for a label.  */
+#define ASM_GLOBALIZE_LABEL(STREAM,NAME)  \
+  (fprintf (STREAM, "\t.global\t"),	  \
+   assemble_name (STREAM, NAME),	  \
+   fputc ('\n',STREAM))                   \
+
+/* Output a reference to a label.  */
+#define ASM_OUTPUT_LABELREF(STREAM,NAME)  \
+  fprintf (STREAM, "%s%s", USER_LABEL_PREFIX, NAME)
+
+/* Make an internal label into a string.  */
+#define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)  \
+  sprintf (STRING, "*%s%d", PREFIX, NUM)
+
+/* Nothing special is done about jump tables */
+/* #define ASM_OUTPUT_CASE_LABEL(STREAM,PREFIX,NUM,TABLE)   */
+/* #define ASM_OUTPUT_CASE_END(STREAM,NUM,TABLE)	    */
+
+/* Construct a private name.  */
+#define ASM_FORMAT_PRIVATE_NAME(OUTVAR,NAME,NUMBER)  \
+  ((OUTVAR) = (char *) alloca (strlen (NAME) + 10),  \
+   sprintf ((OUTVAR), "%s.%d", (NAME), (NUMBER)))
+
+/* Output an element of a dispatch table.  */
+#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM,VALUE)  \
+   fprintf (STREAM, "\t.word\tL%d\n", VALUE)
+
+#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM,VALUE,REL)  \
+   fprintf (STREAM, "\tb\tL%d\n", (VALUE))
+
+/* Output various types of constants.  For real numbers we output hex, with
+   a comment containing the "human" value, this allows us to pass NaN's which
+   the riscix assembler doesn't understand (it also makes cross-assembling
+   less likely to fail). */
+
+#define ASM_OUTPUT_LONG_DOUBLE(STREAM,VALUE)				\
+do { char dstr[30];							\
+     long l[3];								\
+     arm_increase_location (12);					\
+     REAL_VALUE_TO_TARGET_LONG_DOUBLE (VALUE, l);			\
+     REAL_VALUE_TO_DECIMAL (VALUE, "%.20g", dstr);			\
+     fprintf (STREAM, "\t.long 0x%lx,0x%lx,0x%lx\t%s long double %s\n", \
+	      l[0], l[1], l[2], ASM_COMMENT_START, dstr);		\
+   } while (0)
+
+    
+#define ASM_OUTPUT_DOUBLE(STREAM, VALUE)  				\
+do { char dstr[30];							\
+     long l[2];								\
+     arm_increase_location (8);						\
+     REAL_VALUE_TO_TARGET_DOUBLE (VALUE, l);				\
+     REAL_VALUE_TO_DECIMAL (VALUE, "%.14g", dstr);			\
+     fprintf (STREAM, "\t.long 0x%lx, 0x%lx\t%s double %s\n", l[0],	\
+	      l[1], ASM_COMMENT_START, dstr);				\
+   } while (0)
+
+#define ASM_OUTPUT_FLOAT(STREAM, VALUE)					\
+do { char dstr[30];							\
+     long l;								\
+     arm_increase_location (4);						\
+     REAL_VALUE_TO_TARGET_SINGLE (VALUE, l);				\
+     REAL_VALUE_TO_DECIMAL (VALUE, "%.7g", dstr);			\
+     fprintf (STREAM, "\t.word 0x%lx\t%s float %s\n", l,		\
+	      ASM_COMMENT_START, dstr);					\
+   } while (0);
+
+#define ASM_OUTPUT_INT(STREAM, EXP)	\
+  (fprintf (STREAM, "\t.word\t"),	\
+   output_addr_const (STREAM, (EXP)),	\
+   arm_increase_location (4),		\
+   fputc ('\n', STREAM))
+
+#define ASM_OUTPUT_SHORT(STREAM, EXP)  \
+  (fprintf (STREAM, "\t.short\t"),     \
+   output_addr_const (STREAM, (EXP)),  \
+   arm_increase_location (2),          \
+   fputc ('\n', STREAM))
+
+#define ASM_OUTPUT_CHAR(STREAM, EXP)  \
+  (fprintf (STREAM, "\t.byte\t"),      \
+   output_addr_const (STREAM, (EXP)),  \
+   arm_increase_location (1),          \
+   fputc ('\n', STREAM))
+
+#define ASM_OUTPUT_BYTE(STREAM, VALUE)  \
+  (fprintf (STREAM, "\t.byte\t%d\n", VALUE),  \
+   arm_increase_location (1))
+
+#define ASM_OUTPUT_ASCII(STREAM, PTR, LEN)  \
+  output_ascii_pseudo_op ((STREAM), (unsigned char *)(PTR), (LEN))
+
+/* Output a gap.  In fact we fill it with nulls.  */
+#define ASM_OUTPUT_SKIP(STREAM, NBYTES)  \
+  (arm_increase_location (NBYTES),              \
+   fprintf (STREAM, "\t.space\t%d\n", NBYTES))
+
+/* Align output to a power of two.  Horrible /bin/as.  */
+#define ASM_OUTPUT_ALIGN(STREAM, POWER)  \
+  do                                                           \
+    {                                                          \
+      register int amount = 1 << (POWER);                      \
+      extern int arm_text_location;			       \
+                                                               \
+      if (amount == 2)                                         \
+	fprintf (STREAM, "\t.even\n");                         \
+      else                                                     \
+	fprintf (STREAM, "\t.align\t%d\n", amount - 4);        \
+                                                               \
+      if (in_text_section ())                                  \
+	arm_text_location = ((arm_text_location + amount - 1)  \
+			     & ~(amount - 1));                 \
+    } while (0)
+
+/* Output a common block */
+#define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)  		\
+  (fprintf (STREAM, "\t.comm\t"), 		     			\
+   assemble_name ((STREAM), (NAME)),		     			\
+   fprintf(STREAM, ", %d\t%s %d\n", ROUNDED, ASM_COMMENT_START, SIZE))
+
+/* Output a local common block.  /bin/as can't do this, so hack a `.space' into
+   the bss segment.  Note that this is *bad* practice.  */
+#define ASM_OUTPUT_LOCAL(STREAM,NAME,SIZE,ROUNDED)  \
+  output_lcomm_directive (STREAM, NAME, SIZE, ROUNDED)
+
+/* Output a source line for the debugger.  */
+/* #define ASM_OUTPUT_SOURCE_LINE(STREAM,LINE) */
+
+/* Output a #ident directive.  */
+#define ASM_OUTPUT_IDENT(STREAM,STRING)  \
+  fprintf (STREAM,"- - - ident %s\n",STRING)
+
+/* The assembler's parentheses characters.  */
+#define ASM_OPEN_PAREN "("
+#define ASM_CLOSE_PAREN ")"
+
+#ifndef ASM_COMMENT_START
+#define ASM_COMMENT_START "@"
+#endif
+
+#include "arm/arm.h"
diff --git a/gcc/config/arm/semiaof.h b/gcc/config/arm/semiaof.h
new file mode 100644
index 0000000..cb13a33
--- /dev/null
+++ b/gcc/config/arm/semiaof.h
@@ -0,0 +1,49 @@
+/* Definitions of target machine for GNU compiler.  ARM on semi-hosted platform
+   AOF Syntax assembler.
+   Copyright (C) 1995 Free Software Foundation, Inc.
+   Contributed by Richard Earnshaw (richard.earnshaw@armltd.co.uk)
+
+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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#define CPP_PREDEFINES \
+    "-Darm -Dsemi -Acpu(arm) -Amachine(arm)"
+
+#define CPP_SPEC "%{m6:-D__arm6__} \
+%{mcpu-*:-D__%*} \
+%{mcpu=*:-D__%*} \
+%{mapcs-32:-D__APCS_32__ -U__APCS_26__} \
+%{mapcs-26:-D__APCS_26__ -U__APCS_32__} \
+%{!mapcs-32: %{!mapcs-26:-D__APCS_32__}} \
+%{msoft-float:-D__SOFTFP__} \
+%{mhard-float:-U__SOFTFP__} \
+%{!mhard-float: %{!msoft-float:-U__SOFTFP__}} \
+"
+
+#define ASM_SPEC "%{g -g} -arch 4 \
+-apcs 3%{mapcs-32:/32bit}%{mapcs-26:/26bit}%{!mapcs-26:%{!macps-32:/32bit}}"
+
+#define LIB_SPEC "%{Eb: armlib_h.32b%s}%{!Eb: armlib_h.32l%s}"
+
+#define TARGET_VERSION fputs (" (ARM/semi-hosted)", stderr);
+
+#define TARGET_DEFAULT ARM_FLAG_APCS_32
+
+/* The Norcroft C library defines size_t as "unsigned int" */
+#define SIZE_TYPE "unsigned int"
+
+#include "arm/aof.h"
diff --git a/gcc/config/arm/t-semiaof b/gcc/config/arm/t-semiaof
new file mode 100644
index 0000000..6f1dfca
--- /dev/null
+++ b/gcc/config/arm/t-semiaof
@@ -0,0 +1,63 @@
+OLDCC = armcc -w
+# Don't build enquire
+ENQUIRE=
+CROSS_LIBGCC1 = libgcc1-aof.a
+LIBGCC2 = libgcc2-aof.a
+LIBGCC = libgcc-aof.a
+LIBGCC2_CFLAGS = -O2 -fomit-frame-pointer
+LIBGCC1_TEST = #libgcc1-atest
+EXTRA_PARTS = crtbegin.o crtend.o
+
+# Rule to build libgcc1.a and libgcc2.a and libgcc.a, since the librarian 
+# for the ARM tools is somewhat quirky, and needs a special rule to use it.
+libgcc1-aof.a: libgcc1.c $(CONFIG_H) config.status
+	-rm -rf tmplib libgcc1.a libgcc1-aof.a tmplibgcc1.a
+	mkdir tmplib
+	for name in $(LIB1FUNCS); \
+	do \
+	  echo $${name}; \
+	  rm -f $${name}$(objext); \
+	  $(OLDCC) $(CCLIBFLAGS) $(INCLUDES) -c -DL$${name} $(srcdir)/libgcc1.c; \
+	  if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
+	  mv libgcc1$(objext) tmplib/$${name}$(objext); \
+	done
+	(cd tmplib; \
+	 armlib -c tmplibgcc1.a *; \
+	 mv tmplibgcc1.a ..)
+	mv tmplibgcc1.a libgcc1-aof.a
+	rm -rf tmplib
+
+libgcc2-aof.a: libgcc2.c libgcc2.ready $(CONFIG_H) $(LIB2FUNCS_EXTRA) \
+   machmode.h longlong.h gbl-ctors.h config.status
+	-rm -f tmplibgcc2.a
+	-rm -rf tmplib
+	mkdir tmplib
+	for name in $(LIB2FUNCS); \
+	do \
+	  echo $${name}; \
+	  $(GCC_FOR_TARGET) $(LIBGCC2_CFLAGS) $(INCLUDES) -c -DL$${name} \
+	      $(srcdir)/libgcc2.c -o tmplib/$${name}$(objext); \
+	  if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
+	done
+	(cd tmplib; \
+	 armlib -c tmplibgcc2.a *; \
+	 mv tmplibgcc2.a ..)
+	mv tmplibgcc2.a libgcc2-aof.a
+	rm -rf tmplib
+
+# Combine the various libraries into a single library, libgcc.a.
+libgcc-aof.a: $(CROSS_LIBGCC1) $(LIBGCC2)
+	-rm -rf tmplibgcc.a libgcc.a tmpcopy libgcc-aof.a
+	mkdir tmpcopy
+	(cd tmpcopy; armlib -e ../$(LIBGCC1) \*)
+	-(cd tmpcopy; chmod +w * > /dev/null 2>&1)
+	(cd tmpcopy; armlib -e ../$(LIBGCC2) \*)
+	(cd tmpcopy; armlib -co ../tmplibgcc.a *$(objext))
+	rm -rf tmpcopy
+	mv tmplibgcc.a libgcc.a
+	ln libgcc.a libgcc-aof.a
+
+libgcc1-atest: libgcc1-test.o native $(GCC_PARTS) $(EXTRA_PARTS)
+	@echo "Testing libgcc1.  Ignore linker warning messages."
+	$(GCC_FOR_TARGET) $(GCC_CFLAGS) libgcc1-test.o -o libgcc1-test \
+	-v