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Initial revision
From-SVN: r13761
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169
gcc/config/m32r/initfini.c
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169
gcc/config/m32r/initfini.c
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/* .init/.fini section handling + C++ global constructor/destructor handling.
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This file is based on crtstuff.c, sol2-crti.asm, sol2-crtn.asm.
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Copyright (C) 1996, 1997 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* As a special exception, if you link this file with files
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compiled with GCC to produce an executable, this does not cause
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the resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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/* Declare a pointer to void function type. */
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typedef void (*func_ptr) (void);
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#ifdef CRT_INIT
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/* NOTE: In order to be able to support SVR4 shared libraries, we arrange
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to have one set of symbols { __CTOR_LIST__, __DTOR_LIST__, __CTOR_END__,
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__DTOR_END__ } per root executable and also one set of these symbols
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per shared library. So in any given whole process image, we may have
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multiple definitions of each of these symbols. In order to prevent
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these definitions from conflicting with one another, and in order to
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ensure that the proper lists are used for the initialization/finalization
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of each individual shared library (respectively), we give these symbols
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only internal (i.e. `static') linkage, and we also make it a point to
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refer to only the __CTOR_END__ symbol in crtfini.o and the __DTOR_LIST__
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symbol in crtinit.o, where they are defined. */
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static func_ptr __CTOR_LIST__[1]
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__attribute__ ((section (".ctors")))
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= { (func_ptr) (-1) };
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static func_ptr __DTOR_LIST__[1]
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__attribute__ ((section (".dtors")))
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= { (func_ptr) (-1) };
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/* Run all the global destructors on exit from the program. */
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/* Some systems place the number of pointers in the first word of the
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table. On SVR4 however, that word is -1. In all cases, the table is
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null-terminated. On SVR4, we start from the beginning of the list and
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invoke each per-compilation-unit destructor routine in order
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until we find that null.
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Note that this function MUST be static. There will be one of these
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functions in each root executable and one in each shared library, but
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although they all have the same code, each one is unique in that it
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refers to one particular associated `__DTOR_LIST__' which belongs to the
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same particular root executable or shared library file. */
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static void __do_global_dtors ()
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asm ("__do_global_dtors") __attribute__ ((section (".text")));
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static void
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__do_global_dtors ()
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{
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func_ptr *p;
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for (p = __DTOR_LIST__ + 1; *p; p++)
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(*p) ();
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}
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/* .init section start.
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This must appear at the start of the .init section. */
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asm ("
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.section .init,\"ax\",@progbits
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.balign 4
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.global __init
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__init:
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push fp
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push lr
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mv fp,sp
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ld24 r0,#__fini
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bl atexit
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.fillinsn
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");
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/* .fini section start.
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This must appear at the start of the .init section. */
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asm ("
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.section .fini,\"ax\",@progbits
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.balign 4
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.global __fini
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__fini:
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push fp
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push lr
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mv fp,sp
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bl __do_global_dtors
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.fillinsn
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");
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#endif /* CRT_INIT */
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#ifdef CRT_FINI
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/* Put a word containing zero at the end of each of our two lists of function
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addresses. Note that the words defined here go into the .ctors and .dtors
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sections of the crtend.o file, and since that file is always linked in
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last, these words naturally end up at the very ends of the two lists
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contained in these two sections. */
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static func_ptr __CTOR_END__[1]
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__attribute__ ((section (".ctors")))
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= { (func_ptr) 0 };
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static func_ptr __DTOR_END__[1]
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__attribute__ ((section (".dtors")))
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= { (func_ptr) 0 };
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/* Run all global constructors for the program.
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Note that they are run in reverse order. */
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static void __do_global_ctors ()
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asm ("__do_global_ctors") __attribute__ ((section (".text")));
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static void
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__do_global_ctors ()
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{
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func_ptr *p;
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for (p = __CTOR_END__ - 1; *p != (func_ptr) -1; p--)
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(*p) ();
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}
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/* .init section end.
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This must live at the end of the .init section. */
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asm ("
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.section .init,\"ax\",@progbits
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bl __do_global_ctors
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mv sp,fp
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pop lr
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pop fp
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jmp lr
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.fillinsn
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");
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/* .fini section end.
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This must live at the end of the .fini section. */
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asm ("
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.section .fini,\"ax\",@progbits
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mv sp,fp
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pop lr
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pop fp
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jmp lr
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.fillinsn
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");
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#endif /* CRT_FINI */
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1815
gcc/config/m32r/m32r.c
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1815
gcc/config/m32r/m32r.c
Normal file
File diff suppressed because it is too large
Load Diff
1871
gcc/config/m32r/m32r.h
Normal file
1871
gcc/config/m32r/m32r.h
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File diff suppressed because it is too large
Load Diff
1421
gcc/config/m32r/m32r.md
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1421
gcc/config/m32r/m32r.md
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File diff suppressed because it is too large
Load Diff
57
gcc/config/m32r/t-m32r
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57
gcc/config/m32r/t-m32r
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@ -0,0 +1,57 @@
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# lib1funcs.asm is currently empty.
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CROSS_LIBGCC1 =
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# These are really part of libgcc1, but this will cause them to be
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# built correctly, so...
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LIB2FUNCS_EXTRA = fp-bit.c dp-bit.c
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# Turn off the SDA while compiling libgcc2. There are no headers for it
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# and we want maximal upward compatibility here.
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TARGET_LIBGCC2_CFLAGS = -G 0
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fp-bit.c: $(srcdir)/config/fp-bit.c
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echo '#define FLOAT' > fp-bit.c
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cat $(srcdir)/config/fp-bit.c >> fp-bit.c
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dp-bit.c: $(srcdir)/config/fp-bit.c
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cat $(srcdir)/config/fp-bit.c > dp-bit.c
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# We need to use -fpic when we are using gcc to compile the routines in
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# initfini.c. This is only really needed when we are going to use gcc/g++
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# to produce a shared library, but since we don't know ahead of time when
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# we will be doing that, we just always use -fpic when compiling the
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# routines in initfini.c.
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# -fpic currently isn't supported for the m32r.
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CRTSTUFF_T_CFLAGS =
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# .init/.fini section routines
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crtinit.o: $(srcdir)/config/m32r/initfini.c $(GCC_PASSES) $(CONFIG_H)
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$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(CRTSTUFF_T_CFLAGS) \
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-DCRT_INIT -finhibit-size-directive -fno-inline-functions \
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-g0 -c $(srcdir)/config/m32r/initfini.c -o crtinit.o
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crtfini.o: $(srcdir)/config/m32r/initfini.c $(GCC_PASSES) $(CONFIG_H)
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$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(CRTSTUFF_T_CFLAGS) \
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-DCRT_FINI -finhibit-size-directive -fno-inline-functions \
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-g0 -c $(srcdir)/config/m32r/initfini.c -o crtfini.o
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# -mmodel={small,medium} requires separate libraries.
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# We don't build libraries for the large model, instead we use the medium
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# libraries. The only difference is that the large model can handle jumps
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# more than 26 signed bits away.
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MULTILIB_OPTIONS = mmodel=small/mmodel=medium
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MULTILIB_DIRNAMES = small medium
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MULTILIB_MATCHES = mmodel?medium=mmodel?large
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# Set MULTILIB_EXTRA_OPTS so shipped libraries have small data in .sdata and
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# SHN_M32R_SCOMMON.
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# This is important for objects referenced in system header files.
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MULTILIB_EXTRA_OPTS = msdata=sdata
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LIBGCC = stmp-multilib
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INSTALL_LIBGCC = install-multilib
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47
gcc/config/m32r/xm-m32r.h
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47
gcc/config/m32r/xm-m32r.h
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/* Configuration for GNU C-compiler for the M32R processor.
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Copyright (C) 1996 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* #defines that need visibility everywhere. */
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#define FALSE 0
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#define TRUE 1
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/* This describes the machine the compiler is hosted on. */
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#define HOST_BITS_PER_CHAR 8
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#define HOST_BITS_PER_SHORT 16
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#define HOST_BITS_PER_INT 32
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#define HOST_BITS_PER_LONG 32
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#define HOST_BITS_PER_LONGLONG 64
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/* Doubles are stored in memory with the high order word first. This
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matters when cross-compiling. */
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#define HOST_WORDS_BIG_ENDIAN 1
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/* target machine dependencies.
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tm.h is a symbolic link to the actual target specific file. */
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#include "tm.h"
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/* Arguments to use with `exit'. */
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#define SUCCESS_EXIT_CODE 0
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#define FATAL_EXIT_CODE 33
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/* If compiled with Sun CC, the use of alloca requires this #include. */
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#ifndef __GNUC__
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#include "alloca.h"
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#endif
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86
gcc/ginclude/va-m32r.h
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86
gcc/ginclude/va-m32r.h
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/* GNU C stdarg/varargs support for the M32R */
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/* Define __gnuc_va_list. */
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#ifndef __GNUC_VA_LIST
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#define __GNUC_VA_LIST
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typedef void *__gnuc_va_list;
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#endif /* not __GNUC_VA_LIST */
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/* If this is for internal libc use, don't define anything but
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__gnuc_va_list. */
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#if defined (_STDARG_H) || defined (_VARARGS_H)
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/* Common code for va_start for both varargs and stdarg. */
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#define __va_rounded_size(TYPE) \
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(((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
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#ifdef _STDARG_H /* stdarg.h support */
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/* Calling __builtin_next_arg gives the proper error message if LASTARG is
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not indeed the last argument. */
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#define va_start(AP, LASTARG) \
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(AP = ((__gnuc_va_list) __builtin_next_arg (LASTARG)))
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#else /* varargs.h support */
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#define va_alist __builtin_va_alist
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/* The ... causes current_function_varargs to be set in cc1. */
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#define va_dcl int __builtin_va_alist; ...
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#define va_start(AP) AP=(char *) &__builtin_va_alist
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#endif /* _STDARG_H */
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/* Nothing needs to be done to end varargs/stdarg processing */
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#define va_end(AP) ((void) 0)
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/* Values returned by __builtin_classify_type. */
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enum __type_class
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{
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__no_type_class = -1,
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__void_type_class,
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__integer_type_class,
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__char_type_class,
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__enumeral_type_class,
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__boolean_type_class,
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__pointer_type_class,
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__reference_type_class,
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__offset_type_class,
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__real_type_class,
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__complex_type_class,
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__function_type_class,
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__method_type_class,
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__record_type_class,
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__union_type_class,
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__array_type_class,
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__string_type_class,
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__set_type_class,
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__file_type_class,
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__lang_type_class
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};
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/* Return whether a type is passed by reference. */
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#define __va_by_reference_p(TYPE) (sizeof (TYPE) > 8)
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#define va_arg(AP,TYPE) \
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__extension__ (*({ \
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register TYPE *__ptr; \
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\
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if (__va_by_reference_p (TYPE)) \
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{ \
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__ptr = *(TYPE **)(void *) (AP); \
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(AP) = (__gnuc_va_list) ((char *) (AP) + sizeof (void *)); \
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} \
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else \
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{ \
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__ptr = (TYPE *)(void *) \
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((char *) (AP) + (sizeof (TYPE) < __va_rounded_size (char) \
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? __va_rounded_size (TYPE) - sizeof (TYPE) \
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: 0)); \
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(AP) = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)); \
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} \
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\
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__ptr; \
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}))
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#endif /* defined (_STDARG_H) || defined (_VARARGS_H) */
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