From 67eff66438688fddebe41f77fd252a3b2b135271 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Mon, 3 Mar 2003 20:58:42 +0000 Subject: Initial effort at adding profiling support. --- libc/sysdeps/linux/m68k/bits/atomicity.h | 64 +++++++++++++++++++++++++++ libc/sysdeps/linux/m68k/bits/sigcontextinfo.h | 26 +++++++++++ libc/sysdeps/linux/m68k/bits/stackinfo.h | 28 ++++++++++++ 3 files changed, 118 insertions(+) create mode 100644 libc/sysdeps/linux/m68k/bits/atomicity.h create mode 100644 libc/sysdeps/linux/m68k/bits/sigcontextinfo.h create mode 100644 libc/sysdeps/linux/m68k/bits/stackinfo.h (limited to 'libc/sysdeps/linux/m68k/bits') diff --git a/libc/sysdeps/linux/m68k/bits/atomicity.h b/libc/sysdeps/linux/m68k/bits/atomicity.h new file mode 100644 index 000000000..464948086 --- /dev/null +++ b/libc/sysdeps/linux/m68k/bits/atomicity.h @@ -0,0 +1,64 @@ +/* Low-level functions for atomic operations. m680x0 version, x >= 2. + Copyright (C) 1997 Free Software Foundation, Inc. + Contributed by Andreas Schwab . + 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. */ + +#ifndef _ATOMICITY_H +#define _ATOMICITY_H 1 + +#include + + +static inline int +__attribute__ ((unused)) +exchange_and_add (volatile uint32_t *mem, int val) +{ + register int result = *mem; + register int temp; + __asm__ __volatile__ ("1: move%.l %0,%1;" + " add%.l %2,%1;" + " cas%.l %0,%1,%3;" + " jbne 1b" + : "=d" (result), "=&d" (temp) + : "d" (val), "m" (*mem), "0" (result) : "memory"); + return result; +} + +static inline void +__attribute__ ((unused)) +atomic_add (volatile uint32_t *mem, int val) +{ + /* XXX Use cas here as well? */ + __asm__ __volatile__ ("add%.l %0,%1" + : : "id" (val), "m" (*mem) : "memory"); +} + +static inline int +__attribute__ ((unused)) +compare_and_swap (volatile long int *p, long int oldval, long int newval) +{ + char ret; + long int readval; + + __asm__ __volatile__ ("cas%.l %2,%3,%1; seq %0" + : "=dm" (ret), "=m" (*p), "=d" (readval) + : "d" (newval), "m" (*p), "2" (oldval)); + return ret; +} + +#endif /* atomicity.h */ diff --git a/libc/sysdeps/linux/m68k/bits/sigcontextinfo.h b/libc/sysdeps/linux/m68k/bits/sigcontextinfo.h new file mode 100644 index 000000000..b7e08cfc9 --- /dev/null +++ b/libc/sysdeps/linux/m68k/bits/sigcontextinfo.h @@ -0,0 +1,26 @@ +/* Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Schwab , 1998. + + 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. */ + +#define SIGCONTEXT int _code, struct sigcontext * +#define SIGCONTEXT_EXTRA_ARGS _code, +#define GET_PC(ctx) ((void *) (ctx)->sc_pc) +#define GET_FRAME(ctx) ((void *) __builtin_frame_address (1)) +#define GET_STACK(ctx) ((void *) (ctx)->sc_usp) +#define CALL_SIGHANDLER(handler, signo, ctx) \ + (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx)) diff --git a/libc/sysdeps/linux/m68k/bits/stackinfo.h b/libc/sysdeps/linux/m68k/bits/stackinfo.h new file mode 100644 index 000000000..66e5a17fb --- /dev/null +++ b/libc/sysdeps/linux/m68k/bits/stackinfo.h @@ -0,0 +1,28 @@ +/* Copyright (C) 1999 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. */ + +/* This file contains a bit of information about the stack allocation + of the processor. */ + +#ifndef _STACKINFO_H +#define _STACKINFO_H 1 + +/* On m68k the stack grows down. */ +#define _STACK_GROWS_DOWN 1 + +#endif /* stackinfo.h */ -- cgit v1.2.3