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Re: [PATCH v4 01/13] C-SKY: ABI related code
On Tue, Sep 11, 2018 at 7:56 PM, Mao Han <han_mao@c-sky.com> wrote:
> Codes in this patch contains lots of C-SKY ABI related code. They are
> written accroding to the registers assgnments, relocations, assemblly
> described in C-SKY CPU ABI Standards and C-SKY architercure user guide.
> Available from: https://github.com/c-sky/csky-doc
> This does not contain any linux related code.
>
> * sysdeps/csky/abiv2/__longjmp.S: New file.
> * sysdeps/csky/abiv2/crti.S: Likewise.
> * sysdeps/csky/abiv2/crtn.S: Likewise.
> * sysdeps/csky/abiv2/csky-mcount.S: Likewise.
> * sysdeps/csky/abiv2/dl-trampoline.S: Likewise.
> * sysdeps/csky/abiv2/memcmp.S: Likewise.
> * sysdeps/csky/abiv2/memcpy.S: Likewise.
> * sysdeps/csky/abiv2/memmove.S: Likewise.
> * sysdeps/csky/abiv2/memset.S: Likewise.
> * sysdeps/csky/abiv2/setjmp.S: Likewise.
> * sysdeps/csky/abiv2/start.S: Likewise.
> * sysdeps/csky/abiv2/strcmp.S: Likewise.
> * sysdeps/csky/abiv2/strcpy.S: Likewise.
> * sysdeps/csky/abiv2/strlen.S: Likewise.
> * sysdeps/csky/abort-instr.h: Likewise.
> * sysdeps/csky/bits/endian.h: Likewise.
> * sysdeps/csky/bits/link.h: Likewise.
> * sysdeps/csky/bits/setjmp.h: Likewise.
> * sysdeps/csky/bsd-_setjmp.S: Likewise.
> * sysdeps/csky/bsd-setjmp.S: Likewise.
> * sysdeps/csky/gccframe.h: Likewise.
> * sysdeps/csky/jmpbuf-unwind.h: Likewise.
> * sysdeps/csky/machine-gmon.h: Likewise.
> * sysdeps/csky/memusage.h: Likewise.
> * sysdeps/csky/stackinfo.h: Likewise.
> * sysdeps/csky/sysdep.h: Likewise.
> ---
> sysdeps/csky/abiv2/__longjmp.S | 61 ++++++++++
> sysdeps/csky/abiv2/crti.S | 99 ++++++++++++++++
> sysdeps/csky/abiv2/crtn.S | 50 +++++++++
> sysdeps/csky/abiv2/csky-mcount.S | 72 ++++++++++++
> sysdeps/csky/abiv2/dl-trampoline.S | 50 +++++++++
> sysdeps/csky/abiv2/memcmp.S | 142 +++++++++++++++++++++++
> sysdeps/csky/abiv2/memcpy.S | 224 +++++++++++++++++++++++++++++++++++++
> sysdeps/csky/abiv2/memmove.S | 1 +
> sysdeps/csky/abiv2/memset.S | 98 ++++++++++++++++
> sysdeps/csky/abiv2/setjmp.S | 77 +++++++++++++
> sysdeps/csky/abiv2/start.S | 109 ++++++++++++++++++
> sysdeps/csky/abiv2/strcmp.S | 156 ++++++++++++++++++++++++++
> sysdeps/csky/abiv2/strcpy.S | 127 +++++++++++++++++++++
> sysdeps/csky/abiv2/strlen.S | 102 +++++++++++++++++
> sysdeps/csky/abort-instr.h | 2 +
> sysdeps/csky/bits/endian.h | 6 +
> sysdeps/csky/bits/link.h | 55 +++++++++
> sysdeps/csky/bits/setjmp.h | 34 ++++++
> sysdeps/csky/bsd-_setjmp.S | 1 +
> sysdeps/csky/bsd-setjmp.S | 1 +
> sysdeps/csky/gccframe.h | 21 ++++
> sysdeps/csky/jmpbuf-unwind.h | 48 ++++++++
> sysdeps/csky/machine-gmon.h | 32 ++++++
> sysdeps/csky/memusage.h | 21 ++++
> sysdeps/csky/stackinfo.h | 29 +++++
> sysdeps/csky/sysdep.h | 88 +++++++++++++++
> 26 files changed, 1706 insertions(+)
> create mode 100644 sysdeps/csky/abiv2/__longjmp.S
> create mode 100644 sysdeps/csky/abiv2/crti.S
> create mode 100644 sysdeps/csky/abiv2/crtn.S
> create mode 100644 sysdeps/csky/abiv2/csky-mcount.S
> create mode 100644 sysdeps/csky/abiv2/dl-trampoline.S
> create mode 100644 sysdeps/csky/abiv2/memcmp.S
> create mode 100644 sysdeps/csky/abiv2/memcpy.S
> create mode 100644 sysdeps/csky/abiv2/memmove.S
> create mode 100644 sysdeps/csky/abiv2/memset.S
> create mode 100644 sysdeps/csky/abiv2/setjmp.S
> create mode 100644 sysdeps/csky/abiv2/start.S
> create mode 100644 sysdeps/csky/abiv2/strcmp.S
> create mode 100644 sysdeps/csky/abiv2/strcpy.S
> create mode 100644 sysdeps/csky/abiv2/strlen.S
> create mode 100644 sysdeps/csky/abort-instr.h
> create mode 100644 sysdeps/csky/bits/endian.h
> create mode 100644 sysdeps/csky/bits/link.h
> create mode 100644 sysdeps/csky/bits/setjmp.h
> create mode 100644 sysdeps/csky/bsd-_setjmp.S
> create mode 100644 sysdeps/csky/bsd-setjmp.S
> create mode 100644 sysdeps/csky/gccframe.h
> create mode 100644 sysdeps/csky/jmpbuf-unwind.h
> create mode 100644 sysdeps/csky/machine-gmon.h
> create mode 100644 sysdeps/csky/memusage.h
> create mode 100644 sysdeps/csky/stackinfo.h
> create mode 100644 sysdeps/csky/sysdep.h
>
> diff --git a/sysdeps/csky/abiv2/crti.S b/sysdeps/csky/abiv2/crti.S
> new file mode 100644
> index 0000000..4526a9e
> --- /dev/null
> +++ b/sysdeps/csky/abiv2/crti.S
> @@ -0,0 +1,99 @@
> +/* Special .init and .fini section support for C-SKY ABIV2.
> + Copyright (C) 2018 Free Software Foundation, Inc.
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + In addition to the permissions in the GNU Lesser General Public
> + License, the Free Software Foundation gives you unlimited
> + permission to link the compiled version of this file with other
> + programs, and to distribute those programs without any restriction
> + coming from the use of this file. (The GNU Lesser General Public
> + License restrictions do apply in other respects; for example, they
> + cover modification of the file, and distribution when not linked
> + into another program.)
> +
> + Note that people who make modified versions of this file are not
> + obligated to grant this special exception for their modified
> + versions; it is their choice whether to do so. The GNU Lesser
> + General Public License gives permission to release a modified
> + version without this exception; this exception also makes it
> + possible to release a modified version which carries forward this
> + exception.
> +
> + The GNU C Library 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
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library. If not, see
> + <http://www.gnu.org/licenses/>. */
> +
> +/* crti.S puts a function prologue at the beginning of the .init and
> + .fini sections and defines global symbols for those addresses, so
> + they can be called as functions. The symbols _init and _fini are
> + magic and cause the linker to emit DT_INIT and DT_FINI. */
> +
> +#include <libc-symbols.h>
> +#include <sysdep.h>
> +
> +#ifndef PREINIT_FUNCTION
> +# define PREINIT_FUNCTION __gmon_start__
> +#endif
> +
> +#ifndef PREINIT_FUNCTION_WEAK
> +# define PREINIT_FUNCTION_WEAK 1
> +#endif
> +
> +#if PREINIT_FUNCTION_WEAK
> + weak_extern (PREINIT_FUNCTION)
> +#else
> + .hidden PREINIT_FUNCTION
> +#endif
> +
> + .section .init,"ax",@progbits
> + .align 4
> + .globl _init
> + .hidden _init
Does C-SKY really need _init and _fini?
--
H.J.