mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-11 07:40:05 +00:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
115 lines
3.5 KiB
C
115 lines
3.5 KiB
C
/* Assembler macros for CRIS.
|
|
Copyright (C) 1999, 2000, 2001 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.
|
|
|
|
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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <sysdeps/generic/sysdep.h>
|
|
|
|
#ifndef HAVE_ELF
|
|
# error ELF is assumed. Generalize the code and retry.
|
|
#endif
|
|
|
|
#ifndef NO_UNDERSCORES
|
|
# error User-label prefix (underscore) assumed absent. Generalize the code and retry.
|
|
#endif
|
|
|
|
#ifdef __ASSEMBLER__
|
|
|
|
/* Syntactic details of assembly-code. */
|
|
|
|
/* It is *not* generally true that "ELF uses byte-counts for .align, most
|
|
others use log2 of count of bytes", like some neighboring configs say.
|
|
See "align" in gas/read.c which is not overridden by
|
|
gas/config/obj-elf.c. It takes a log2 argument. *Some* targets
|
|
override it to take a byte argument. People should read source instead
|
|
of relying on hearsay. */
|
|
# define ALIGNARG(log2) log2
|
|
|
|
# define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg
|
|
# define ASM_SIZE_DIRECTIVE(name) .size name,.-name
|
|
|
|
/* The non-PIC jump is preferred, since it does not stall, and does not
|
|
invoke generation of a PLT. These macros assume that $r0 is set up as
|
|
GOT register. */
|
|
# ifdef __PIC__
|
|
# define PLTJUMP(_x) \
|
|
add.d C_SYMBOL_NAME (_x):PLT,$pc
|
|
|
|
# define PLTCALL(_x) \
|
|
move.d C_SYMBOL_NAME (_x):PLTG,$r9 @ \
|
|
add.d $r0,$r9 @ \
|
|
jsr $r9
|
|
|
|
# define SETUP_PIC \
|
|
push $r0 @ \
|
|
move.d $pc,$r0 @ \
|
|
sub.d .:GOTOFF,$r0
|
|
|
|
# define TEARDOWN_PIC pop $r0
|
|
# else
|
|
# define PLTJUMP(_x) jump C_SYMBOL_NAME (_x)
|
|
# define PLTCALL(_x) jsr C_SYMBOL_NAME (_x)
|
|
# define SETUP_PIC
|
|
# define TEARDOWN_PIC
|
|
# endif
|
|
|
|
/* Define an entry point visible from C. */
|
|
# define ENTRY(name) \
|
|
.text @ \
|
|
ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (name) @ \
|
|
ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME (name), function) @ \
|
|
.align ALIGNARG (2) @ \
|
|
C_LABEL(name) @ \
|
|
CALL_MCOUNT
|
|
|
|
# undef END
|
|
# define END(name) \
|
|
ASM_SIZE_DIRECTIVE (C_SYMBOL_NAME (name))
|
|
|
|
/* If compiled for profiling, call `mcount' at the start of each function.
|
|
FIXME: Note that profiling is not actually implemented. This is just
|
|
example code which might not even compile, though it is believed to be
|
|
correct. */
|
|
# ifdef PROF
|
|
# define CALL_MCOUNT \
|
|
push $srp @ \
|
|
push $r9 @ \
|
|
push $r10 @ \
|
|
push $r11 @ \
|
|
push $r12 @ \
|
|
push $r13 @ \
|
|
SETUP_PIC @ \
|
|
PLTCALL (mcount) @ \
|
|
TEARDOWN_PIC @ \
|
|
pop $r13 @ \
|
|
pop $r12 @ \
|
|
pop $r11 @ \
|
|
pop $r10 @ \
|
|
pop $r9 @ \
|
|
pop $srp
|
|
# else
|
|
# define CALL_MCOUNT /* Do nothing. */
|
|
# endif
|
|
|
|
/* Since C identifiers are not normally prefixed with an underscore
|
|
on this system, the asm identifier `syscall_error' intrudes on the
|
|
C name space. Make sure we use an innocuous name. */
|
|
# define syscall_error __syscall_error
|
|
# define mcount _mcount
|
|
|
|
#endif /* __ASSEMBLER__ */
|