config.gcc (tm_file): Add elfos.h and avr/elf.h for avr-*-* and avr-*-rtems* targets.
authorGeorg-Johann Lay <avr@gjlay.de>
Tue, 28 Jun 2011 07:26:09 +0000 (07:26 +0000)
committerGeorg-Johann Lay <gjl@gcc.gnu.org>
Tue, 28 Jun 2011 07:26:09 +0000 (07:26 +0000)
* config.gcc (tm_file): Add elfos.h and avr/elf.h for
avr-*-* and avr-*-rtems* targets.
* config/avr/elf.h: New file.
(ASM_OUTPUT_BEFORE_CASE_LABEL): Define.
(TARGET_ASM_SELECT_SECTION): Define.
(INIT_SECTION_ASM_OP): Undefine.
(FINI_SECTION_ASM_OP): Undefine.
(READONLY_DATA_SECTION_ASM_OP): Undefine.
(PCC_BITFIELD_TYPE_MATTERS): Undefine.
(TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): Undefine.
* config/avr/avr.h:
(PREFERRED_DEBUGGING_TYPE): Move to elf.h.
(TARGET_ASM_NAMED_SECTION): Move to elf.h.
(MAX_OFILE_ALIGNMENT): Move to elf.h.
(STRING_LIMIT): Move to elf.h.
(ASM_DECLARE_FUNCTION_NAME): Move to elf.h.
(ASM_DECLARE_OBJECT_NAME): Remove.
(ESCAPES): Remove.
(ASM_OUTPUT_SKIP): Remove.
(DWARF2_DEBUGGING_INFO): Remove.
(OBJECT_FORMAT_ELF): Remove.
(USER_LABEL_PREFIX): Remove.
(ASM_OUTPUT_EXTERNAL): Remove.
(ASM_OUTPUT_ASCII): Remove.
(TYPE_ASM_OP): Remove.
(SIZE_ASM_OP): Remove.
(WEAK_ASM_OP): Remove.
(STRING_ASM_OP): Remove.
(SET_ASM_OP): Remove.
(ASM_WEAKEN_LABEL): Remove.
(TYPE_OPERAND_FMT): Remove.
(ASM_DECLARE_FUNCTION_SIZE): Remove.
(ASM_FINISH_DECLARE_OBJECT): Remove.
(NO_DOLLAR_IN_LABEL): Remove.
(ASM_GENERATE_INTERNAL_LABEL): Remove.
(ASM_OUTPUT_CASE_LABEL): Remove.
* config/avr/avr.c (avr_asm_output_aligned_decl_common): Use
ASM_OUTPUT_ALIGNED_LOCAL, ASM_OUTPUT_ALIGNED_COMMON.
(gas_output_ascii): Remove.
(gas_output_limited_string): Remove.
(TARGET_ASM_FILE_START_FILE_DIRECTIVE): Remove.
* config/avr/avr-protos.h
(gas_output_ascii): Remove prototye.
(gas_output_limited_string): Remove prototype.

From-SVN: r175575

gcc/ChangeLog
gcc/config.gcc
gcc/config/avr/avr-protos.h
gcc/config/avr/avr.c
gcc/config/avr/avr.h
gcc/config/avr/elf.h [new file with mode: 0644]

index 6ebc1ce23928aeda8b86dcb6c98dcf7a5a4ff16b..dbe0762455f507089009aa89131f8eda7767c046 100644 (file)
@@ -1,3 +1,51 @@
+2011-06-28  Georg-Johann Lay  <avr@gjlay.de>
+
+       * config.gcc (tm_file): Add elfos.h and avr/elf.h for 
+       avr-*-* and avr-*-rtems* targets.
+       
+       * config/avr/elf.h: New file.
+       (ASM_OUTPUT_BEFORE_CASE_LABEL): Define.
+       (TARGET_ASM_SELECT_SECTION): Define.
+       (INIT_SECTION_ASM_OP): Undefine.
+       (FINI_SECTION_ASM_OP): Undefine.
+       (READONLY_DATA_SECTION_ASM_OP): Undefine.
+       (PCC_BITFIELD_TYPE_MATTERS): Undefine.
+       (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): Undefine.
+       * config/avr/avr.h:
+       (PREFERRED_DEBUGGING_TYPE): Move to elf.h.
+       (TARGET_ASM_NAMED_SECTION): Move to elf.h.
+       (MAX_OFILE_ALIGNMENT): Move to elf.h.
+       (STRING_LIMIT): Move to elf.h.
+       (ASM_DECLARE_FUNCTION_NAME): Move to elf.h.
+       (ASM_DECLARE_OBJECT_NAME): Remove.
+       (ESCAPES): Remove.
+       (ASM_OUTPUT_SKIP): Remove.
+       (DWARF2_DEBUGGING_INFO): Remove.
+       (OBJECT_FORMAT_ELF): Remove.
+       (USER_LABEL_PREFIX): Remove.
+       (ASM_OUTPUT_EXTERNAL): Remove.
+       (ASM_OUTPUT_ASCII): Remove.
+       (TYPE_ASM_OP): Remove.
+       (SIZE_ASM_OP): Remove.
+       (WEAK_ASM_OP): Remove.
+       (STRING_ASM_OP): Remove.
+       (SET_ASM_OP): Remove.
+       (ASM_WEAKEN_LABEL): Remove.
+       (TYPE_OPERAND_FMT): Remove.
+       (ASM_DECLARE_FUNCTION_SIZE): Remove.
+       (ASM_FINISH_DECLARE_OBJECT): Remove.
+       (NO_DOLLAR_IN_LABEL): Remove.
+       (ASM_GENERATE_INTERNAL_LABEL): Remove.
+       (ASM_OUTPUT_CASE_LABEL): Remove.
+       * config/avr/avr.c (avr_asm_output_aligned_decl_common): Use
+       ASM_OUTPUT_ALIGNED_LOCAL, ASM_OUTPUT_ALIGNED_COMMON.
+       (gas_output_ascii): Remove.
+       (gas_output_limited_string): Remove.
+       (TARGET_ASM_FILE_START_FILE_DIRECTIVE): Remove.
+       * config/avr/avr-protos.h
+       (gas_output_ascii): Remove prototye.
+       (gas_output_limited_string): Remove prototype.
+
 2011-06-27  Richard Earnshaw  <rearnsha@arm.com>
 
        PR target/48637
index 14c7a81f45ba8923c8dba72d00a38b97443968f1..37dd5cd705c7646f871bf654fb2989c03b35d57d 100644 (file)
@@ -936,13 +936,13 @@ arm*-wince-pe*)
        extra_objs="pe.o"
        ;;
 avr-*-rtems*)
-       tm_file="avr/avr.h dbxelf.h avr/rtems.h rtems.h newlib-stdint.h"
+       tm_file="elfos.h avr/elf.h avr/avr.h dbxelf.h avr/rtems.h rtems.h newlib-stdint.h"
        tmake_file="avr/t-avr t-rtems avr/t-rtems"
        extra_gcc_objs="driver-avr.o avr-devices.o"
        extra_objs="avr-devices.o"
        ;;
 avr-*-*)
-       tm_file="avr/avr.h dbxelf.h newlib-stdint.h"
+       tm_file="elfos.h avr/elf.h avr/avr.h dbxelf.h newlib-stdint.h"
        use_gcc_stdint=wrap
        extra_gcc_objs="driver-avr.o avr-devices.o"
        extra_objs="avr-devices.o"
index 2f3e93d883c01619261aa06880aaf3de65a2043d..6d06af8153ad5f11025f2ca9424878c4f00338f9 100644 (file)
@@ -30,8 +30,6 @@ extern void avr_asm_declare_function_name (FILE *, const char *, tree);
 extern void order_regs_for_local_alloc (void);
 extern int avr_initial_elimination_offset (int from, int to);
 extern int avr_simple_epilogue (void);
-extern void gas_output_limited_string (FILE *file, const char *str);
-extern void gas_output_ascii (FILE *file, const char *str, size_t length);
 extern int avr_hard_regno_rename_ok (unsigned int, unsigned int);
 extern rtx avr_return_addr_rtx (int count, rtx tem);
 
index 2b1aaf097465c275b9b6820de454a262737d10fd..efd9f7209cb24168e812fad5b8bb03847733d3a2 100644 (file)
@@ -169,8 +169,6 @@ static const struct attribute_spec avr_attribute_table[] =
 #define TARGET_ASM_INTEGER avr_assemble_integer
 #undef TARGET_ASM_FILE_START
 #define TARGET_ASM_FILE_START avr_file_start
-#undef TARGET_ASM_FILE_START_FILE_DIRECTIVE
-#define TARGET_ASM_FILE_START_FILE_DIRECTIVE true
 #undef TARGET_ASM_FILE_END
 #define TARGET_ASM_FILE_END avr_file_end
 
@@ -4897,99 +4895,6 @@ avr_asm_declare_function_name (FILE *file, const char *name, tree decl)
   ASM_OUTPUT_LABEL (file, name);
 }
 
-/* The routine used to output NUL terminated strings.  We use a special
-   version of this for most svr4 targets because doing so makes the
-   generated assembly code more compact (and thus faster to assemble)
-   as well as more readable, especially for targets like the i386
-   (where the only alternative is to output character sequences as
-   comma separated lists of numbers).  */
-
-void
-gas_output_limited_string(FILE *file, const char *str)
-{
-  const unsigned char *_limited_str = (const unsigned char *) str;
-  unsigned ch;
-  fprintf (file, "%s\"", STRING_ASM_OP);
-  for (; (ch = *_limited_str); _limited_str++)
-    {
-      int escape;
-      switch (escape = ESCAPES[ch])
-       {
-       case 0:
-         putc (ch, file);
-         break;
-       case 1:
-         fprintf (file, "\\%03o", ch);
-         break;
-       default:
-         putc ('\\', file);
-         putc (escape, file);
-         break;
-       }
-    }
-  fprintf (file, "\"\n");
-}
-
-/* The routine used to output sequences of byte values.  We use a special
-   version of this for most svr4 targets because doing so makes the
-   generated assembly code more compact (and thus faster to assemble)
-   as well as more readable.  Note that if we find subparts of the
-   character sequence which end with NUL (and which are shorter than
-   STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING.  */
-
-void
-gas_output_ascii(FILE *file, const char *str, size_t length)
-{
-  const unsigned char *_ascii_bytes = (const unsigned char *) str;
-  const unsigned char *limit = _ascii_bytes + length;
-  unsigned bytes_in_chunk = 0;
-  for (; _ascii_bytes < limit; _ascii_bytes++)
-    {
-      const unsigned char *p;
-      if (bytes_in_chunk >= 60)
-       {
-         fprintf (file, "\"\n");
-         bytes_in_chunk = 0;
-       }
-      for (p = _ascii_bytes; p < limit && *p != '\0'; p++)
-       continue;
-      if (p < limit && (p - _ascii_bytes) <= (signed)STRING_LIMIT)
-       {
-         if (bytes_in_chunk > 0)
-           {
-             fprintf (file, "\"\n");
-             bytes_in_chunk = 0;
-           }
-         gas_output_limited_string (file, (const char*)_ascii_bytes);
-         _ascii_bytes = p;
-       }
-      else
-       {
-         int escape;
-         unsigned ch;
-         if (bytes_in_chunk == 0)
-           fprintf (file, "\t.ascii\t\"");
-         switch (escape = ESCAPES[ch = *_ascii_bytes])
-           {
-           case 0:
-             putc (ch, file);
-             bytes_in_chunk++;
-             break;
-           case 1:
-             fprintf (file, "\\%03o", ch);
-             bytes_in_chunk += 4;
-             break;
-           default:
-             putc ('\\', file);
-             putc (escape, file);
-             bytes_in_chunk += 2;
-             break;
-           }
-       }
-    }
-  if (bytes_in_chunk > 0)
-    fprintf (file, "\"\n");
-}
 
 /* Return value is nonzero if pseudos that have been
    assigned to registers of class CLASS would likely be spilled
@@ -5169,17 +5074,9 @@ avr_asm_output_aligned_decl_common (FILE * stream, const_tree decl ATTRIBUTE_UNU
   avr_need_clear_bss_p = true;
 
   if (local_p)
-    {
-      fputs ("\t.local\t", stream);
-      assemble_name (stream, name);
-      fputs ("\n", stream);
-    }
-  
-  fputs ("\t.comm\t", stream);
-  assemble_name (stream, name);
-  fprintf (stream,
-           "," HOST_WIDE_INT_PRINT_UNSIGNED ",%u\n",
-           size, align / BITS_PER_UNIT);
+    ASM_OUTPUT_ALIGNED_LOCAL (stream, name, size, align);
+  else
+    ASM_OUTPUT_ALIGNED_COMMON (stream, name, size, align);
 }
 
 
index 5f4ceff021446134f1b05d5578653931074134af..9b27f703807c10ff5123544b63a589fcd6c6958f 100644 (file)
@@ -150,8 +150,6 @@ extern GTY(()) section *progmem_section;
 /* No data type wants to be aligned rounder than this.  */
 #define BIGGEST_ALIGNMENT 8
 
-#define MAX_OFILE_ALIGNMENT (32768 * 8)
-
 #define TARGET_VTABLE_ENTRY_ALIGN 8
 
 #define STRICT_ALIGNMENT 0
@@ -457,11 +455,6 @@ do {                                                                           \
 
 #define ASM_APP_OFF "/* #NOAPP */\n"
 
-/* Switch into a generic section.  */
-#define TARGET_ASM_NAMED_SECTION avr_asm_named_section
-
-#define ASM_OUTPUT_ASCII(FILE, P, SIZE)         gas_output_ascii (FILE,P,SIZE)
-
 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C, STR) ((C) == '\n' || ((C) == '$'))
 
 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(STREAM, DECL, NAME, SIZE, ALIGN) \
@@ -473,121 +466,11 @@ do {                                                                         \
 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(STREAM, DECL, NAME, SIZE, ALIGN)  \
   avr_asm_output_aligned_decl_common (STREAM, DECL, NAME, SIZE, ALIGN, true)
 
-#undef TYPE_ASM_OP
-#undef SIZE_ASM_OP
-#undef WEAK_ASM_OP
-#define TYPE_ASM_OP    "\t.type\t"
-#define SIZE_ASM_OP    "\t.size\t"
-#define WEAK_ASM_OP    "\t.weak\t"
-/* Define the strings used for the special svr4 .type and .size directives.
-   These strings generally do not vary from one system running svr4 to
-   another, but if a given system (e.g. m88k running svr) needs to use
-   different pseudo-op names for these, they may be overridden in the
-   file which includes this one.  */
-
-
-#undef TYPE_OPERAND_FMT
-#define TYPE_OPERAND_FMT       "@%s"
-/* The following macro defines the format used to output the second
-   operand of the .type assembler directive.  Different svr4 assemblers
-   expect various different forms for this operand.  The one given here
-   is just a default.  You may need to override it in your machine-
-   specific tm.h file (depending upon the particulars of your assembler).  */
-
-#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)            \
-avr_asm_declare_function_name ((FILE), (NAME), (DECL))
-
-#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)                   \
-  do {                                                                 \
-    if (!flag_inhibit_size_directive)                                  \
-      ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                          \
-  } while (0)
-
-#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                      \
-do {                                                                   \
-  ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");                    \
-  size_directive_output = 0;                                           \
-  if (!flag_inhibit_size_directive && DECL_SIZE (DECL))                        \
-    {                                                                  \
-      size_directive_output = 1;                                       \
-      ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME,                           \
-                                int_size_in_bytes (TREE_TYPE (DECL))); \
-    }                                                                  \
-  ASM_OUTPUT_LABEL(FILE, NAME);                                                \
-} while (0)
-
-#undef ASM_FINISH_DECLARE_OBJECT
-#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)        \
-do {                                                                    \
-     const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);            \
-     HOST_WIDE_INT size;                                                \
-     if (!flag_inhibit_size_directive && DECL_SIZE (DECL)               \
-         && ! AT_END && TOP_LEVEL                                       \
-        && DECL_INITIAL (DECL) == error_mark_node                       \
-        && !size_directive_output)                                      \
-       {                                                                \
-        size_directive_output = 1;                                      \
-        size = int_size_in_bytes (TREE_TYPE (DECL));                    \
-        ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size);                   \
-       }                                                                \
-   } while (0)
-
-
-#define ESCAPES \
-"\1\1\1\1\1\1\1\1btn\1fr\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
-\0\0\"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
-\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\\\0\0\0\
-\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\
-\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
-\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
-\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
-\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"
-/* A table of bytes codes used by the ASM_OUTPUT_ASCII and
-   ASM_OUTPUT_LIMITED_STRING macros.  Each byte in the table
-   corresponds to a particular byte value [0..255].  For any
-   given byte value, if the value in the corresponding table
-   position is zero, the given character can be output directly.
-   If the table value is 1, the byte must be output as a \ooo
-   octal escape.  If the tables value is anything else, then the
-   byte value should be output as a \ followed by the value
-   in the table.  Note that we can use standard UN*X escape
-   sequences for many control characters, but we don't use
-   \a to represent BEL because some svr4 assemblers (e.g. on
-   the i386) don't know about that.  Also, we don't use \v
-   since some versions of gas, such as 2.2 did not accept it.  */
-
-#define STRING_LIMIT   ((unsigned) 64)
-#define STRING_ASM_OP  "\t.string\t"
-/* Some svr4 assemblers have a limit on the number of characters which
-   can appear in the operand of a .string directive.  If your assembler
-   has such a limitation, you should define STRING_LIMIT to reflect that
-   limit.  Note that at least some svr4 assemblers have a limit on the
-   actual number of bytes in the double-quoted string, and that they
-   count each character in an escape sequence as one byte.  Thus, an
-   escape sequence like \377 would count as four bytes.
-
-   If your target assembler doesn't support the .string directive, you
-   should define this to zero.  */
-
 /* Globalizing directive for a label.  */
 #define GLOBAL_ASM_OP ".global\t"
 
-#define SET_ASM_OP     "\t.set\t"
-
-#define ASM_WEAKEN_LABEL(FILE, NAME)   \
-  do                                   \
-    {                                  \
-      fputs ("\t.weak\t", (FILE));     \
-      assemble_name ((FILE), (NAME));  \
-      fputc ('\n', (FILE));            \
-    }                                  \
-  while (0)
-
 #define SUPPORTS_WEAK 1
 
-#define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)       \
-sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
-
 #define HAS_INIT_SECTION 1
 
 #define REGISTER_NAMES {                               \
@@ -605,8 +488,6 @@ sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
 
 #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
 
-#define USER_LABEL_PREFIX ""
-
 #define ASSEMBLER_DIALECT AVR_HAVE_MOVW
 
 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO)     \
@@ -624,22 +505,12 @@ sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)         \
   avr_output_addr_vec_elt(STREAM, VALUE)
 
-#define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
-  (switch_to_section (progmem_section), \
-   (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM))
-
-#define ASM_OUTPUT_SKIP(STREAM, N)             \
-fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
-
 #define ASM_OUTPUT_ALIGN(STREAM, POWER)                        \
   do {                                                 \
       if ((POWER) > 1)                                 \
           fprintf (STREAM, "\t.p2align\t%d\n", POWER); \
   } while (0)
 
-#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
-  default_elf_asm_output_external (FILE, DECL, NAME)
-
 #define CASE_VECTOR_MODE HImode
 
 #undef WORD_REGISTER_OPERATIONS
@@ -654,8 +525,6 @@ fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
 
 #define DOLLARS_IN_IDENTIFIERS 0
 
-#define NO_DOLLAR_IN_LABEL 1
-
 #define TRAMPOLINE_SIZE 4
 
 /* Store in cc_status the expressions
@@ -757,14 +626,8 @@ mmcu=*:-mmcu=%*}"
 #define OUT_AS2(a,b,c) output_asm_insn (AS2(a,b,c), operands)
 #define CR_TAB "\n\t"
 
-#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
-
-#define DWARF2_DEBUGGING_INFO 1
-
 #define DWARF2_ADDR_SIZE 4
 
-#define OBJECT_FORMAT_ELF
-
 #define INCOMING_RETURN_ADDR_RTX   avr_incoming_return_addr_rtx ()
 #define INCOMING_FRAME_SP_OFFSET   (AVR_3_BYTE_PC ? 3 : 2)
 
diff --git a/gcc/config/avr/elf.h b/gcc/config/avr/elf.h
new file mode 100644 (file)
index 0000000..9bbd32f
--- /dev/null
@@ -0,0 +1,58 @@
+/* Copyright (C) 2011
+   Free Software Foundation, Inc.
+   Contributed by Georg-Johann Lay (avr@gjlay.de)
+
+   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.
+   
+   You should have received a copy of the GNU General Public License
+   along with GCC; see the file COPYING3.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+
+/* Overriding some definitions from elfos.h for AVR.  */
+
+#undef PCC_BITFIELD_TYPE_MATTERS
+
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
+
+#undef TARGET_ASM_NAMED_SECTION
+#define TARGET_ASM_NAMED_SECTION avr_asm_named_section
+
+/* Use lame default: no string merging, ...  */
+#undef TARGET_ASM_SELECT_SECTION
+#define TARGET_ASM_SELECT_SECTION default_select_section
+
+#undef MAX_OFILE_ALIGNMENT
+#define MAX_OFILE_ALIGNMENT (32768 * 8)
+
+#undef TARGET_HAVE_SWITCHABLE_BSS_SECTIONS
+
+#undef STRING_LIMIT
+#define STRING_LIMIT ((unsigned) 64)
+
+/* Setup `readonly_data_section' in `avr_asm_init_sections'.  */
+#undef READONLY_DATA_SECTION_ASM_OP
+
+/* Take care of `signal' and `interrupt' attributes.  */
+#undef ASM_DECLARE_FUNCTION_NAME
+#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)     \
+  avr_asm_declare_function_name ((FILE), (NAME), (DECL))
+
+#undef ASM_OUTPUT_BEFORE_CASE_LABEL
+#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE, PREFIX, NUM, TABLE) \
+  switch_to_section (progmem_section);
+
+/* Be conservative in crtstuff.c.  */
+#undef INIT_SECTION_ASM_OP
+#undef FINI_SECTION_ASM_OP