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Add m68k-elf port from Cygnus gcc sources.

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* configure.in (m68020-*-elf*, m68k-*-elf*): New targets.
	* configure: Rebuild.
	* config/elfos.h: New file.
	* config/m68k/m68020-elf.h, config/m68k/m68kelf.h,
	config/m68k/t-m68kelf: New file.

From-SVN: r23835
This commit is contained in:
Jim Wilson 1998-11-24 20:42:38 +00:00 committed by Jim Wilson
parent 23a79c6192
commit d1be3be367
7 changed files with 1115 additions and 3 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
Tue Nov 24 20:24:59 1998 Jim Wilson <wilson@cygnus.com>
* configure.in (m68020-*-elf*, m68k-*-elf*): New targets.
* configure: Rebuild.
* config/elfos.h: New file.
* config/m68k/m68020-elf.h, config/m68k/m68kelf.h,
config/m68k/t-m68kelf: New file.
Tue Nov 24 13:40:06 1998 Jeffrey A Law (law@cygnus.com)
* Makefile.in (HOST_AR): Define.

755
gcc/config/elfos.h Normal file
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@ -0,0 +1,755 @@
/* elfos.h -- operating system specific defines to be used when
targeting GCC for some generic ELF system
Copyright (C) 1991, 1994, 1995 Free Software Foundation, Inc.
Based on svr4.h contributed by Ron Guilmette (rfg@netcom.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 GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* For the sake of libgcc2.c, indicate target supports atexit. */
#define HAVE_ATEXIT
#undef ENDFILE_SPEC
#define ENDFILE_SPEC "crtend.o%s"
#undef STARTFILE_SPEC
#define STARTFILE_SPEC "%{!shared: \
%{!symbolic: \
%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}}\
crtbegin.o%s"
/* Attach a special .ident directive to the end of the file to identify
the version of GCC which compiled this code. The format of the
.ident string is patterned after the ones produced by native svr4
C compilers. */
#define IDENT_ASM_OP ".ident"
#define ASM_FILE_END(FILE) \
do { \
fprintf ((FILE), "\t%s\t\"GCC: (GNU) %s\"\n", \
IDENT_ASM_OP, version_string); \
} while (0)
/* Output #ident as a .ident. */
#define ASM_OUTPUT_IDENT(FILE, NAME) \
fprintf (FILE, "\t%s\t\"%s\"\n", IDENT_ASM_OP, NAME);
/* Use periods rather than dollar signs in special g++ assembler names. */
#define NO_DOLLAR_IN_LABEL
/* Writing `int' for a bitfield forces int alignment for the structure. */
#define PCC_BITFIELD_TYPE_MATTERS 1
/* Implicit library calls should use memcpy, not bcopy, etc. */
#define TARGET_MEM_FUNCTIONS
/* Handle #pragma weak and #pragma pack. */
#define HANDLE_SYSV_PRAGMA
/* System V Release 4 uses DWARF debugging info. */
#define DWARF_DEBUGGING_INFO
/* All ELF targets can support DWARF-2. */
#define DWARF2_DEBUGGING_INFO
/* gas on SVR4 supports the use of .stabs. Permit -gstabs to be used
in general, although it will only work when using gas. */
#define DBX_DEBUGGING_INFO
/* The GNU tools operate better with stabs. Since we don't have
any native tools to be compatible with, default to stabs. */
#ifndef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
#endif
/* Make LBRAC and RBRAC addresses relative to the start of the
function. The native Solaris stabs debugging format works this
way, gdb expects it, and it reduces the number of relocation
entries. */
#define DBX_BLOCKS_FUNCTION_RELATIVE 1
/* When using stabs, gcc2_compiled must be a stabs entry, not an
ordinary symbol, or gdb won't see it. Furthermore, since gdb reads
the input piecemeal, starting with each N_SO, it's a lot easier if
the gcc2 flag symbol is *after* the N_SO rather than before it. So
we emit an N_OPT stab there. */
#define ASM_IDENTIFY_GCC(FILE) \
do \
{ \
if (write_symbols != DBX_DEBUG) \
fputs ("gcc2_compiled.:\n", FILE); \
} \
while (0)
#define ASM_IDENTIFY_GCC_AFTER_SOURCE(FILE) \
do \
{ \
if (write_symbols == DBX_DEBUG) \
fputs ("\t.stabs\t\"gcc2_compiled.\", 0x3c, 0, 0, 0\n", FILE); \
} \
while (0)
/* Like block addresses, stabs line numbers are relative to the
current function. */
#undef ASM_OUTPUT_SOURCE_LINE
#define ASM_OUTPUT_SOURCE_LINE(file, line) \
do \
{ \
static int sym_lineno = 1; \
fprintf (file, "\t.stabn 68,0,%d,.LM%d-", \
line, sym_lineno); \
assemble_name (file, XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
fprintf (file, "\n.LM%d:\n", sym_lineno); \
sym_lineno += 1; \
} \
while (0)
/* In order for relative line numbers to work, we must output the
stabs entry for the function name first. */
#define DBX_FUNCTION_FIRST
#undef ASM_BYTE_OP
#define ASM_BYTE_OP ".byte"
#undef SET_ASM_OP
#define SET_ASM_OP ".set"
/* This is how to begin an assembly language file. Most svr4 assemblers want
at least a .file directive to come first, and some want to see a .version
directive come right after that. Here we just establish a default
which generates only the .file directive. If you need a .version
directive for any specific target, you should override this definition
in the target-specific file which includes this one. */
#undef ASM_FILE_START
#define ASM_FILE_START(FILE) \
output_file_directive ((FILE), main_input_filename)
/* This is how to allocate empty space in some section. The .zero
pseudo-op is used for this on most svr4 assemblers. */
#define SKIP_ASM_OP ".zero"
#undef ASM_OUTPUT_SKIP
#define ASM_OUTPUT_SKIP(FILE,SIZE) \
fprintf (FILE, "\t%s\t%u\n", SKIP_ASM_OP, (SIZE))
/* This is how to output a reference to a user-level label named NAME.
`assemble_name' uses this.
For System V Release 4 the convention is *not* to prepend a leading
underscore onto user-level symbol names. */
#undef ASM_OUTPUT_LABELREF
#define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "%s", NAME)
/* This is how to output an internal numbered label where
PREFIX is the class of label and NUM is the number within the class.
For most svr4 systems, the convention is that any symbol which begins
with a period is not put into the linker symbol table by the assembler. */
#undef ASM_OUTPUT_INTERNAL_LABEL
#define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \
do { \
fprintf (FILE, ".%s%d:\n", PREFIX, NUM); \
} while (0)
/* This is how to store into the string LABEL
the symbol_ref name of an internal numbered label where
PREFIX is the class of label and NUM is the number within the class.
This is suitable for output with `assemble_name'.
For most svr4 systems, the convention is that any symbol which begins
with a period is not put into the linker symbol table by the assembler. */
#undef ASM_GENERATE_INTERNAL_LABEL
#define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
do { \
sprintf (LABEL, "*.%s%d", PREFIX, NUM); \
} while (0)
/* Output the label which precedes a jumptable. Note that for all svr4
systems where we actually generate jumptables (which is to say every
svr4 target except i386, where we use casesi instead) we put the jump-
tables into the .rodata section and since other stuff could have been
put into the .rodata section prior to any given jumptable, we have to
make sure that the location counter for the .rodata section gets pro-
perly re-aligned prior to the actual beginning of the jump table. */
#define ALIGN_ASM_OP ".align"
#ifndef ASM_OUTPUT_BEFORE_CASE_LABEL
#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \
ASM_OUTPUT_ALIGN ((FILE), 2);
#endif
#undef ASM_OUTPUT_CASE_LABEL
#define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,JUMPTABLE) \
do { \
ASM_OUTPUT_BEFORE_CASE_LABEL (FILE, PREFIX, NUM, JUMPTABLE) \
ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \
} while (0)
/* The standard SVR4 assembler seems to require that certain builtin
library routines (e.g. .udiv) be explicitly declared as .globl
in each assembly file where they are referenced. */
#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
ASM_GLOBALIZE_LABEL (FILE, XSTR (FUN, 0))
/* This says how to output assembler code to declare an
uninitialized external linkage data object. Under SVR4,
the linker seems to want the alignment of data objects
to depend on their types. We do exactly that here. */
#define COMMON_ASM_OP ".comm"
#undef ASM_OUTPUT_ALIGNED_COMMON
#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
do { \
fprintf ((FILE), "\t%s\t", COMMON_ASM_OP); \
assemble_name ((FILE), (NAME)); \
fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \
} while (0)
/* This says how to output assembler code to declare an
uninitialized internal linkage data object. Under SVR4,
the linker seems to want the alignment of data objects
to depend on their types. We do exactly that here. */
#define LOCAL_ASM_OP ".local"
#undef ASM_OUTPUT_ALIGNED_LOCAL
#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
do { \
fprintf ((FILE), "\t%s\t", LOCAL_ASM_OP); \
assemble_name ((FILE), (NAME)); \
fprintf ((FILE), "\n"); \
ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \
} while (0)
/* This is the pseudo-op used to generate a 32-bit word of data with a
specific value in some section. This is the same for all known svr4
assemblers. */
#define INT_ASM_OP ".long"
/* This is the pseudo-op used to generate a contiguous sequence of byte
values from a double-quoted string WITHOUT HAVING A TERMINATING NUL
AUTOMATICALLY APPENDED. This is the same for most svr4 assemblers. */
#undef ASCII_DATA_ASM_OP
#define ASCII_DATA_ASM_OP ".ascii"
/* Support const sections and the ctors and dtors sections for g++.
Note that there appears to be two different ways to support const
sections at the moment. You can either #define the symbol
READONLY_DATA_SECTION (giving it some code which switches to the
readonly data section) or else you can #define the symbols
EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and
SELECT_RTX_SECTION. We do both here just to be on the safe side. */
#define USE_CONST_SECTION 1
#define CONST_SECTION_ASM_OP ".section\t.rodata"
/* 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.) */
#define CTORS_SECTION_ASM_OP ".section\t.ctors,\"aw\""
#define DTORS_SECTION_ASM_OP ".section\t.dtors,\"aw\""
/* On svr4, we *do* have support for the .init and .fini sections, and we
can put stuff in there to be executed before and after `main'. We let
crtstuff.c and other files know this by defining the following symbols.
The definitions say how to change sections to the .init and .fini
sections. This is the same for all known svr4 assemblers. */
#define INIT_SECTION_ASM_OP ".section\t.init"
#define FINI_SECTION_ASM_OP ".section\t.fini"
/* A default list of other sections which we might be "in" at any given
time. For targets that use additional sections (e.g. .tdesc) you
should override this definition in the target-specific file which
includes this file. */
#undef EXTRA_SECTIONS
#define EXTRA_SECTIONS in_const, in_ctors, in_dtors
/* A default list of extra section function definitions. For targets
that use additional sections (e.g. .tdesc) you should override this
definition in the target-specific file which includes this file. */
#undef EXTRA_SECTION_FUNCTIONS
#define EXTRA_SECTION_FUNCTIONS \
CONST_SECTION_FUNCTION \
CTORS_SECTION_FUNCTION \
DTORS_SECTION_FUNCTION
#define READONLY_DATA_SECTION() const_section ()
extern void text_section ();
#define CONST_SECTION_FUNCTION \
void \
const_section () \
{ \
if (!USE_CONST_SECTION) \
text_section(); \
else if (in_section != in_const) \
{ \
fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \
in_section = in_const; \
} \
}
#define CTORS_SECTION_FUNCTION \
void \
ctors_section () \
{ \
if (in_section != in_ctors) \
{ \
fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
in_section = in_ctors; \
} \
}
#define DTORS_SECTION_FUNCTION \
void \
dtors_section () \
{ \
if (in_section != in_dtors) \
{ \
fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
in_section = in_dtors; \
} \
}
/* Switch into a generic section.
This is currently only used to support section attributes. */
#define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME, RELOC) \
do { \
static struct section_info \
{ \
struct section_info *next; \
char *name; \
enum sect_enum {SECT_RW, SECT_RO, SECT_EXEC} type; \
} *sections; \
struct section_info *s; \
char *mode; \
enum sect_enum type; \
\
for (s = sections; s; s = s->next) \
if (!strcmp (NAME, s->name)) \
break; \
\
if (DECL && TREE_CODE (DECL) == FUNCTION_DECL) \
type = SECT_EXEC, mode = "ax"; \
else if (DECL && DECL_READONLY_SECTION (DECL, RELOC)) \
type = SECT_RO, mode = "a"; \
else \
type = SECT_RW, mode = "aw"; \
\
if (s == 0) \
{ \
s = (struct section_info *) xmalloc (sizeof (struct section_info)); \
s->name = xmalloc ((strlen (NAME) + 1) * sizeof (*NAME)); \
strcpy (s->name, NAME); \
s->type = type; \
s->next = sections; \
sections = s; \
fprintf (FILE, ".section\t%s,\"%s\",@progbits\n", NAME, mode); \
} \
else \
{ \
if (DECL && s->type != type) \
error_with_decl (DECL, "%s causes a section type conflict"); \
\
fprintf (FILE, ".section\t%s\n", NAME); \
} \
} while (0)
#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)) \
{ \
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)
/* A C statement (sans semicolon) to output an element in the table of
global constructors. */
#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
do { \
ctors_section (); \
fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
assemble_name (FILE, NAME); \
fprintf (FILE, "\n"); \
} while (0)
/* A C statement (sans semicolon) to output an element in the table of
global destructors. */
#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
do { \
dtors_section (); \
fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
assemble_name (FILE, NAME); \
fprintf (FILE, "\n"); \
} while (0)
/* A C statement or statements to switch to the appropriate
section for output of DECL. DECL is either a `VAR_DECL' node
or a constant of some sort. RELOC indicates whether forming
the initial value of DECL requires link-time relocations. */
#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 ((flag_pic && RELOC) \
|| !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
|| !DECL_INITIAL (DECL) \
|| (DECL_INITIAL (DECL) != error_mark_node \
&& !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
data_section (); \
else \
const_section (); \
} \
else \
const_section (); \
}
/* A C statement or statements to switch to the appropriate
section for output of RTX in mode MODE. RTX is some kind
of constant in RTL. The argument MODE is redundant except
in the case of a `const_int' rtx. Currently, these always
go into the const section. */
#undef SELECT_RTX_SECTION
#define SELECT_RTX_SECTION(MODE,RTX) const_section()
/* 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. */
#define TYPE_ASM_OP ".type"
#define SIZE_ASM_OP ".size"
/* This is how we tell the assembler that a symbol is weak. */
#define ASM_WEAKEN_LABEL(FILE,NAME) \
do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
fputc ('\n', FILE); } while (0)
/* 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 TYPE_OPERAND_FMT "@%s"
/* Write the extra assembler code needed to declare a function's result.
Most svr4 assemblers don't require any special declaration of the
result value, but there are exceptions. */
#ifndef ASM_DECLARE_RESULT
#define ASM_DECLARE_RESULT(FILE, RESULT)
#endif
/* These macros generate the special .type and .size directives which
are used to set the corresponding fields of the linker symbol table
entries in an ELF object file under SVR4. These macros also output
the starting labels for the relevant functions/objects. */
/* Write the extra assembler code needed to declare a function properly.
Some svr4 assemblers need to also have something extra said about the
function's return value. We allow for that here. */
#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
do { \
fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
assemble_name (FILE, NAME); \
putc (',', FILE); \
fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
putc ('\n', FILE); \
ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
ASM_OUTPUT_LABEL(FILE, NAME); \
} while (0)
/* Write the extra assembler code needed to declare an object properly. */
#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
do { \
fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
assemble_name (FILE, NAME); \
putc (',', FILE); \
fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
putc ('\n', FILE); \
size_directive_output = 0; \
if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
{ \
size_directive_output = 1; \
fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
assemble_name (FILE, NAME); \
fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
} \
ASM_OUTPUT_LABEL(FILE, NAME); \
} while (0)
/* Output the size directive for a decl in rest_of_decl_compilation
in the case where we did not do so before the initializer.
Once we find the error_mark_node, we know that the value of
size_directive_output was set
by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
do { \
char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
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; \
fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
assemble_name (FILE, name); \
fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
} \
} while (0)
/* This is how to declare the size of a function. */
#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
do { \
if (!flag_inhibit_size_directive) \
{ \
char label[256]; \
static int labelno; \
labelno++; \
ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
assemble_name (FILE, (FNAME)); \
fprintf (FILE, ","); \
assemble_name (FILE, label); \
fprintf (FILE, "-"); \
assemble_name (FILE, (FNAME)); \
putc ('\n', FILE); \
} \
} while (0)
/* 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 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"
/* 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.
*/
#define STRING_LIMIT ((unsigned) 256)
#define STRING_ASM_OP ".string"
/* 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). */
#define ASM_OUTPUT_LIMITED_STRING(FILE, STR) \
do \
{ \
register unsigned char *_limited_str = (unsigned char *) (STR); \
register unsigned ch; \
fprintf ((FILE), "\t%s\t\"", STRING_ASM_OP); \
for (; ch = *_limited_str; _limited_str++) \
{ \
register 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"); \
} \
while (0)
/* 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. */
#undef ASM_OUTPUT_ASCII
#define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \
do \
{ \
register unsigned char *_ascii_bytes = (unsigned char *) (STR); \
register unsigned char *limit = _ascii_bytes + (LENGTH); \
register unsigned bytes_in_chunk = 0; \
for (; _ascii_bytes < limit; _ascii_bytes++) \
{ \
register 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) <= STRING_LIMIT) \
{ \
if (bytes_in_chunk > 0) \
{ \
fprintf ((FILE), "\"\n"); \
bytes_in_chunk = 0; \
} \
ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \
_ascii_bytes = p; \
} \
else \
{ \
register int escape; \
register unsigned ch; \
if (bytes_in_chunk == 0) \
fprintf ((FILE), "\t%s\t\"", ASCII_DATA_ASM_OP); \
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"); \
} \
while (0)
/* All SVR4 targets use the ELF object file format. */
#define OBJECT_FORMAT_ELF

42
gcc/config/m68k/m68020-elf.h Normal file
View File

@ -0,0 +1,42 @@
/* Definitions of target machine for GNU compiler. "naked" 68020,
elf object files and debugging, version.
Copyright (C) 1987, 1988, 1992, 1995, 1996 Free Software Foundation, Inc.
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. */
/* This comment is here to see if it will keep Sun's cpp from dying. */
#include "m68k/m68k-none.h"
#include "m68k/m68kelf.h"
#include "elfos.h"
/* m68k/m68kemb.h sets some macros in ways that override the svr4 abi. */
#include "m68k/m68kemb.h"
/* We need to override the default specs from elfos.h. This suppresses the
loading of crt0.o by gcc's default linker spec. For embedded targets crt0
now comes from the linker script. */
#undef STARTFILE_SPEC
#define STARTFILE_SPEC "crtbegin.o%s"
#undef ENDFILE_SPEC
#define ENDFILE_SPEC "crtend.o%s"
#define LIB_SPEC "-lc"
/* end of m68020-elf.h */

266
gcc/config/m68k/m68kelf.h Normal file
View File

@ -0,0 +1,266 @@
/* m68kelf support, derived from m68kv4.h */
/* Target definitions for GNU compiler for mc680x0 running System V.4
Copyright (C) 1991, 1993 Free Software Foundation, Inc.
Written by Ron Guilmette (rfg@netcom.com) and Fred Fish (fnf@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 GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* #notinclude "m68k/sgs.h" /* The m68k/SVR4 assembler is SGS based */
/* These are necessary for -fpic/-fPIC to work correctly. */
#ifndef MOTOROLA
#define MOTOROLA /* Use MOTOROLA syntax. */
#endif
#ifdef USE_GAS /* when present, forces jsbr instead of jsr. */
#undef USE_GAS
#endif
#ifndef SWBEG_ASM_OP
#define SWBEG_ASM_OP ".swbeg"
#endif
/* Here are four prefixes that are used by asm_fprintf to
facilitate customization for alternate assembler syntaxes.
Machines with no likelihood of an alternate syntax need not
define these and need not use asm_fprintf. */
/* The prefix for register names. Note that REGISTER_NAMES
is supposed to include this prefix. Also note that this is NOT an
fprintf format string, it is a literal string */
#undef REGISTER_PREFIX
#define REGISTER_PREFIX "%"
/* The prefix for local (compiler generated) labels.
These labels will not appear in the symbol table. */
#undef LOCAL_LABEL_PREFIX
#define LOCAL_LABEL_PREFIX "."
/* The prefix to add to user-visible assembler symbols. */
#undef USER_LABEL_PREFIX
#define USER_LABEL_PREFIX ""
/* The prefix for immediate operands. */
#undef IMMEDIATE_PREFIX
#define IMMEDIATE_PREFIX "#"
/* In the machine description we can't use %R, because it will not be seen
by ASM_FPRINTF. (Isn't that a design bug?). */
#undef REGISTER_PREFIX_MD
#define REGISTER_PREFIX_MD "%%"
/* config/m68k.md has an explicit reference to the program counter,
prefix this by the register prefix. */
#define ASM_RETURN_CASE_JUMP return "jmp %%pc@(2,%0:w)"
/* How to refer to registers in assembler output.
This sequence is indexed by compiler's hard-register-number.
Motorola format uses different register names than defined
in m68k.h. */
#undef REGISTER_NAMES
#define REGISTER_NAMES \
{"%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7", \
"%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%a6", "%sp", \
"%fp0", "%fp1", "%fp2", "%fp3", "%fp4", "%fp5", "%fp6", "%fp7" }
/* This is how to output an assembler line that says to advance the
location counter to a multiple of 2**LOG bytes. */
#undef ASM_OUTPUT_ALIGN
#define ASM_OUTPUT_ALIGN(FILE,LOG) \
if ((LOG) > 0) \
fprintf ((FILE), "\t%s \t%u\n", ALIGN_ASM_OP, 1 << (LOG)); \
else if ((LOG) > 31) \
abort ();
/* Use proper assembler syntax for these macros. */
#undef ASM_OUTPUT_REG_PUSH
#define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \
asm_fprintf (FILE, "\t%Omove.l %s,-(%Rsp)\n", reg_names[REGNO])
#undef ASM_OUTPUT_REG_POP
#define ASM_OUTPUT_REG_POP(FILE,REGNO) \
asm_fprintf (FILE, "\t%Omove.l (%Rsp)+,%s\n", reg_names[REGNO])
/* Override the definition of NO_DOLLAR_IN_LABEL in svr4.h, for special
g++ assembler names. When this is defined, g++ uses embedded '.'
characters and some m68k assemblers have problems with this. The
chances are much greater that any particular assembler will permit
embedded '$' characters. */
#undef NO_DOLLAR_IN_LABEL
/* Define PCC_STATIC_STRUCT_RETURN if the convention on the target machine
is to use the nonreentrant technique for returning structure and union
values, as commonly implemented by the AT&T Portable C Compiler (PCC).
When defined, the gcc option -fpcc-struct-return can be used to cause
this form to be generated. When undefined, the option does nothing.
For m68k SVR4, the convention is to use a reentrant technique compatible
with the gcc default, so override the definition of this macro in m68k.h */
#undef PCC_STATIC_STRUCT_RETURN
/* Local common symbols are declared to the assembler with ".lcomm" rather
than ".bss", so override the definition in svr4.h */
#undef BSS_ASM_OP
#define BSS_ASM_OP ".lcomm"
/* Register in which address to store a structure value is passed to a
function. The default in m68k.h is a1. For m68k/SVR4 it is a0. */
#undef STRUCT_VALUE_REGNUM
#define STRUCT_VALUE_REGNUM 8
#define ASM_COMMENT_START "|"
#undef TYPE_OPERAND_FMT
#define TYPE_OPERAND_FMT "@%s"
/* Define how the m68k registers should be numbered for Dwarf output.
The numbering provided here should be compatible with the native
SVR4 SDB debugger in the m68k/SVR4 reference port, where d0-d7
are 0-7, a0-a8 are 8-15, and fp0-fp7 are 16-23. */
#undef DBX_REGISTER_NUMBER
#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
/* The ASM_OUTPUT_SKIP macro is first defined in m68k.h, using ".skip".
It is then overridden by m68k/sgs.h to use ".space", and again by svr4.h
to use ".zero". The m68k/SVR4 assembler uses ".space", so repeat the
definition from m68k/sgs.h here. Note that ASM_NO_SKIP_IN_TEXT is
defined in m68k/sgs.h, so we don't have to repeat it here. */
#undef ASM_OUTPUT_SKIP
#define ASM_OUTPUT_SKIP(FILE,SIZE) \
fprintf (FILE, "\t%s %u\n", SPACE_ASM_OP, (SIZE))
#if 0
/* SVR4 m68k assembler is bitching on the `comm i,1,1' which askes for
1 byte alignment. Don't generate alignment for COMMON seems to be
safer until we the assembler is fixed. */
#undef ASM_OUTPUT_ALIGNED_COMMON
/* Same problem with this one. */
#undef ASM_OUTPUT_ALIGNED_LOCAL
#endif
/* The `string' directive on m68k svr4 does not handle string with
escape char (ie., `\') right. Use normal way to output ASCII bytes
seems to be safer. */
#undef ASM_OUTPUT_ASCII
#define ASM_OUTPUT_ASCII(FILE,PTR,LEN) \
do { \
register int sp = 0, lp = 0, ch; \
fprintf ((FILE), "\t%s ", BYTE_ASM_OP); \
do { \
ch = (PTR)[sp]; \
if (ch > ' ' && ! (ch & 0x80) && ch != '\\') \
{ \
fprintf ((FILE), "'%c", ch); \
} \
else \
{ \
fprintf ((FILE), "0x%x", ch); \
} \
if (++sp < (LEN)) \
{ \
if ((sp % 10) == 0) \
{ \
fprintf ((FILE), "\n\t%s ", BYTE_ASM_OP); \
} \
else \
{ \
putc (',', (FILE)); \
} \
} \
} while (sp < (LEN)); \
putc ('\n', (FILE)); \
} while (0)
/* SVR4 m68k assembler is bitching on the syntax `2.b'.
So use the "LLDnnn-LLnnn" format. Define LLDnnn after the table. */
#undef ASM_OUTPUT_CASE_END
#define ASM_OUTPUT_CASE_END(FILE,NUM,TABLE) \
do { \
if (switch_table_difference_label_flag) \
asm_fprintf ((FILE), "\t%s %LLD%d,%LL%d\n", SET_ASM_OP, (NUM), (NUM));\
switch_table_difference_label_flag = 0; \
} while (0)
extern int switch_table_difference_label_flag;
#undef ASM_OUTPUT_COMMON
#undef ASM_OUTPUT_LOCAL
#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
( fputs (".comm ", (FILE)), \
assemble_name ((FILE), (NAME)), \
fprintf ((FILE), ",%u\n", (SIZE)))
#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
( fputs (".lcomm ", (FILE)), \
assemble_name ((FILE), (NAME)), \
fprintf ((FILE), ",%u\n", (SIZE)))
/* Currently, JUMP_TABLES_IN_TEXT_SECTION must be defined in order to
keep switch tables in the text section. */
#define JUMP_TABLES_IN_TEXT_SECTION 1
/* Override the definition in svr4.h. In m68k svr4, using swbeg is the
standard way to do switch table. */
#undef ASM_OUTPUT_BEFORE_CASE_LABEL
#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \
fprintf ((FILE), "\t%s &%d\n", SWBEG_ASM_OP, XVECLEN (PATTERN (TABLE), 1));
/* In m68k svr4, a symbol_ref rtx can be a valid PIC operand if it is an
operand of a function call. */
#undef LEGITIMATE_PIC_OPERAND_P
#define LEGITIMATE_PIC_OPERAND_P(X) \
(! symbolic_operand (X, VOIDmode) \
|| ((GET_CODE(X) == SYMBOL_REF) && SYMBOL_REF_FLAG(X)))
/* Turn off function cse if we are doing PIC. We always want function call
to be done as `bsr foo@PLTPC', so it will force the assembler to create
the PLT entry for `foo'. Doing function cse will cause the address of `foo'
to be loaded into a register, which is exactly what we want to avoid when
we are doing PIC on svr4 m68k. */
#undef OVERRIDE_OPTIONS
#define OVERRIDE_OPTIONS \
{ \
if (flag_pic) flag_no_function_cse = 1; \
if (! TARGET_68020 && flag_pic == 2) \
error("-fPIC is not currently supported on the 68000 or 68010\n"); \
}
/* end of stuff from m68kv4.h */
#undef SGS_CMP_ORDER
#undef ENDFILE_SPEC
#define ENDFILE_SPEC "crtend.o%s"
#undef STARTFILE_SPEC
#define STARTFILE_SPEC "crtbegin.o%s"

29
gcc/config/m68k/t-m68kelf Normal file
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@ -0,0 +1,29 @@
CROSS_LIBGCC1 = libgcc1-asm.a
LIB1ASMSRC = m68k/lb1sf68.asm
LIB1ASMFUNCS = _mulsi3 _udivsi3 _divsi3 _umodsi3 _modsi3 \
_double _float _floatex \
_eqdf2 _nedf2 _gtdf2 _gedf2 _ltdf2 _ledf2 \
_eqsf2 _nesf2 _gtsf2 _gesf2 _ltsf2 _lesf2
# These are really part of libgcc1, but this will cause them to be
# built correctly, so...
LIB2FUNCS_EXTRA = fpgnulib.c xfgnulib.c
fpgnulib.c: $(srcdir)/config/m68k/fpgnulib.c
cp $(srcdir)/config/m68k/fpgnulib.c fpgnulib.c
xfgnulib.c: $(srcdir)/config/m68k/fpgnulib.c
echo '#define EXTFLOAT' > xfgnulib.c
cat $(srcdir)/config/m68k/fpgnulib.c >> xfgnulib.c
MULTILIB_OPTIONS = m68000/m68020/m5200 m68881/msoft-float
MULTILIB_DIRNAMES =
MULTILIB_MATCHES = m68000=mc68000 m68000=m68302 m68000=m68332 m68020=mc68020 m68020=m68040
MULTILIB_EXCEPTIONS = *m5200/*m68881 *m5200/*msoft-float
LIBGCC = stmp-multilib
INSTALL_LIBGCC = install-multilib
# from ../t-svr4
EXTRA_PARTS=crtbegin.o crtend.o
# no pic for now
#CRTSTUFF_T_CFLAGS=-fpic

12
gcc/configure vendored
View File

@ -4189,6 +4189,12 @@ for machine in $build $host $target; do
extra_headers=math-68881.h
float_format=m68k
;;
m68020-*-elf* | m68k-*-elf*)
tm_file="m68k/m68020-elf.h libgloss.h"
xm_file=m68k/xm-m68kv.h
tmake_file=m68k/t-m68kelf
header_files=math-68881.h
;;
m68k-*-lynxos*)
if test x$gas = xyes
then
@ -5951,7 +5957,7 @@ fi
# Figure out what assembler alignment features are present.
echo $ac_n "checking assembler alignment features""... $ac_c" 1>&6
echo "configure:5955: checking assembler alignment features" >&5
echo "configure:5961: checking assembler alignment features" >&5
gcc_cv_as=
gcc_cv_as_alignment_features=
gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
@ -6024,7 +6030,7 @@ fi
echo "$ac_t""$gcc_cv_as_alignment_features" 1>&6
echo $ac_n "checking assembler subsection support""... $ac_c" 1>&6
echo "configure:6028: checking assembler subsection support" >&5
echo "configure:6034: checking assembler subsection support" >&5
gcc_cv_as_subsections=
if test x$gcc_cv_as != x; then
# Check if we have .subsection
@ -6260,7 +6266,7 @@ fi
# Warn if using init_priority.
echo $ac_n "checking whether to enable init_priority by default""... $ac_c" 1>&6
echo "configure:6264: checking whether to enable init_priority by default" >&5
echo "configure:6270: checking whether to enable init_priority by default" >&5
if test x$enable_init_priority != xyes; then
enable_init_priority=no
fi

6
gcc/configure.in
View File

@ -1936,6 +1936,12 @@ changequote([,])dnl
extra_headers=math-68881.h
float_format=m68k
;;
m68020-*-elf* | m68k-*-elf*)
tm_file="m68k/m68020-elf.h libgloss.h"
xm_file=m68k/xm-m68kv.h
tmake_file=m68k/t-m68kelf
header_files=math-68881.h
;;
m68k-*-lynxos*)
if test x$gas = xyes
then