mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-02 01:40:07 +00:00
101 lines
3.1 KiB
C
101 lines
3.1 KiB
C
/* Assembler macros for m68k.
|
|
Copyright (C) 1998, 2003, 2010 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>
|
|
|
|
#ifdef __ASSEMBLER__
|
|
|
|
/* Syntactic details of assembler. */
|
|
|
|
# ifdef HAVE_ELF
|
|
|
|
/* ELF uses byte-counts for .align, most others use log2 of count of bytes. */
|
|
# define ALIGNARG(log2) 1<<log2
|
|
/* For ELF we need the `.type' directive to make shared libs work right. */
|
|
# define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg
|
|
# define ASM_SIZE_DIRECTIVE(name) .size name,.-name
|
|
|
|
/* In ELF C symbols are asm symbols. */
|
|
# undef NO_UNDERSCORES
|
|
# define NO_UNDERSCORES
|
|
|
|
# else
|
|
|
|
# define ALIGNARG(log2) log2
|
|
# define ASM_TYPE_DIRECTIVE(name,type) /* Nothing is specified. */
|
|
# define ASM_SIZE_DIRECTIVE(name) /* Nothing is specified. */
|
|
|
|
# endif
|
|
|
|
|
|
/* Define an entry point visible from C.
|
|
|
|
There is currently a bug in gdb which prevents us from specifying
|
|
incomplete stabs information. Fake some entries here which specify
|
|
the current source file. */
|
|
# define ENTRY(name) \
|
|
.globl 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(name)
|
|
|
|
|
|
/* If compiled for profiling, call `_mcount' at the start of each function. */
|
|
# ifdef PROF
|
|
/* The mcount code relies on a normal frame pointer being on the stack
|
|
to locate our caller, so push one just for its benefit. */
|
|
# define CALL_MCOUNT \
|
|
move.l %fp, -(%sp); move.l %sp, %fp; \
|
|
jbsr JUMPTARGET (mcount); \
|
|
move.l (%sp)+, %fp;
|
|
# else
|
|
# define CALL_MCOUNT /* Do nothing. */
|
|
# endif
|
|
|
|
# ifdef NO_UNDERSCORES
|
|
/* 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
|
|
|
|
# define PSEUDO(name, syscall_name, args) \
|
|
.globl syscall_error; \
|
|
ENTRY (name) \
|
|
DO_CALL (syscall_name, args); \
|
|
jcc JUMPTARGET(syscall_error)
|
|
|
|
# undef PSEUDO_END
|
|
# define PSEUDO_END(name) \
|
|
END (name)
|
|
|
|
# undef JUMPTARGET
|
|
# ifdef PIC
|
|
# define JUMPTARGET(name) name##@PLTPC
|
|
# else
|
|
# define JUMPTARGET(name) name
|
|
# endif
|
|
|
|
#endif /* __ASSEMBLER__ */
|