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/powerpc/bits/atomicity.h | 104 +++++++++++++++++++++++ libc/sysdeps/linux/powerpc/bits/machine-gmon.h | 31 +++++++ libc/sysdeps/linux/powerpc/bits/profil-counter.h | 28 ++++++ libc/sysdeps/linux/powerpc/bits/sigcontextinfo.h | 27 ++++++ libc/sysdeps/linux/powerpc/bits/stackinfo.h | 28 ++++++ 5 files changed, 218 insertions(+) create mode 100644 libc/sysdeps/linux/powerpc/bits/atomicity.h create mode 100644 libc/sysdeps/linux/powerpc/bits/machine-gmon.h create mode 100644 libc/sysdeps/linux/powerpc/bits/profil-counter.h create mode 100644 libc/sysdeps/linux/powerpc/bits/sigcontextinfo.h create mode 100644 libc/sysdeps/linux/powerpc/bits/stackinfo.h (limited to 'libc/sysdeps/linux/powerpc') diff --git a/libc/sysdeps/linux/powerpc/bits/atomicity.h b/libc/sysdeps/linux/powerpc/bits/atomicity.h new file mode 100644 index 000000000..a3f672e5e --- /dev/null +++ b/libc/sysdeps/linux/powerpc/bits/atomicity.h @@ -0,0 +1,104 @@ +/* Low-level functions for atomic operations. PowerPC version. + Copyright (C) 1997, 1998, 1999, 2000 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. */ + +#ifndef _ATOMICITY_H +#define _ATOMICITY_H 1 + +#include + +#if BROKEN_PPC_ASM_CR0 +# define __ATOMICITY_INLINE /* nothing */ +#else +# define __ATOMICITY_INLINE inline +#endif + +static __ATOMICITY_INLINE int +__attribute__ ((unused)) +exchange_and_add (volatile uint32_t *mem, int val) +{ + int tmp, result; + __asm__ ("\n\ +0: lwarx %0,0,%2 \n\ + add%I3 %1,%0,%3 \n\ + stwcx. %1,0,%2 \n\ + bne- 0b \n\ +" : "=&b"(result), "=&r"(tmp) : "r" (mem), "Ir"(val) : "cr0", "memory"); + return result; +} + +static __ATOMICITY_INLINE void +__attribute__ ((unused)) +atomic_add (volatile uint32_t *mem, int val) +{ + int tmp; + __asm__ ("\n\ +0: lwarx %0,0,%1 \n\ + add%I2 %0,%0,%2 \n\ + stwcx. %0,0,%1 \n\ + bne- 0b \n\ +" : "=&b"(tmp) : "r" (mem), "Ir"(val) : "cr0", "memory"); +} + +static __ATOMICITY_INLINE int +__attribute__ ((unused)) +compare_and_swap (volatile long int *p, long int oldval, long int newval) +{ + int result; + __asm__ ("\n\ +0: lwarx %0,0,%1 \n\ + sub%I2c. %0,%0,%2 \n\ + cntlzw %0,%0 \n\ + bne- 1f \n\ + stwcx. %3,0,%1 \n\ + bne- 0b \n\ +1: \n\ +" : "=&b"(result) : "r"(p), "Ir"(oldval), "r"(newval) : "cr0", "memory"); + return result >> 5; +} + +static __ATOMICITY_INLINE long int +__attribute__ ((unused)) +always_swap (volatile long int *p, long int newval) +{ + long int result; + __asm__ ("\n\ +0: lwarx %0,0,%1 \n\ + stwcx. %2,0,%1 \n\ + bne- 0b \n\ +" : "=&r"(result) : "r"(p), "r"(newval) : "cr0", "memory"); + return result; +} + +static __ATOMICITY_INLINE int +__attribute__ ((unused)) +test_and_set (volatile long int *p, long int newval) +{ + int result; + __asm__ ("\n\ +0: lwarx %0,0,%1 \n\ + cmpwi %0,0 \n\ + bne- 1f \n\ + stwcx. %2,0,%1 \n\ + bne- 0b \n\ +1: \n\ +" : "=&r"(result) : "r"(p), "r"(newval) : "cr0", "memory"); + return result; +} + +#endif /* atomicity.h */ diff --git a/libc/sysdeps/linux/powerpc/bits/machine-gmon.h b/libc/sysdeps/linux/powerpc/bits/machine-gmon.h new file mode 100644 index 000000000..b0f3d8130 --- /dev/null +++ b/libc/sysdeps/linux/powerpc/bits/machine-gmon.h @@ -0,0 +1,31 @@ +/* PowerPC-specific implementation of profiling support. + Copyright (C) 1997 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. */ + +/* We need a special version of the `mcount' function because it has + to preserve more registers than your usual function. */ + +void __mcount_internal (unsigned long frompc, unsigned long selfpc); + +#define _MCOUNT_DECL(frompc, selfpc) \ +void __mcount_internal (unsigned long frompc, unsigned long selfpc) + + +/* Define MCOUNT as empty since we have the implementation in another + file. */ +#define MCOUNT diff --git a/libc/sysdeps/linux/powerpc/bits/profil-counter.h b/libc/sysdeps/linux/powerpc/bits/profil-counter.h new file mode 100644 index 000000000..6ce7eab01 --- /dev/null +++ b/libc/sysdeps/linux/powerpc/bits/profil-counter.h @@ -0,0 +1,28 @@ +/* Low-level statistical profiling support function. Linux/ipowerpc version. + Copyright (C) 1996, 1997, 1998 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 +#include + +static void +profil_counter (int signo, SIGCONTEXT scp) +{ + profil_count ((void *) GET_PC (scp)); +} + diff --git a/libc/sysdeps/linux/powerpc/bits/sigcontextinfo.h b/libc/sysdeps/linux/powerpc/bits/sigcontextinfo.h new file mode 100644 index 000000000..138a15cfa --- /dev/null +++ b/libc/sysdeps/linux/powerpc/bits/sigcontextinfo.h @@ -0,0 +1,27 @@ +/* Copyright (C) 1998, 1999, 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 + +#define SIGCONTEXT struct sigcontext * +#define SIGCONTEXT_EXTRA_ARGS +#define GET_PC(ctx) ((void *)((ctx)->regs->nip)) +#define GET_FRAME(ctx) (*(void **)((ctx)->regs->gpr[1])) +#define GET_STACK(ctx) ((void *)((ctx)->regs->gpr[1])) +#define CALL_SIGHANDLER(handler, signo, ctx) \ + (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx)) diff --git a/libc/sysdeps/linux/powerpc/bits/stackinfo.h b/libc/sysdeps/linux/powerpc/bits/stackinfo.h new file mode 100644 index 000000000..839758a4e --- /dev/null +++ b/libc/sysdeps/linux/powerpc/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 PPC the stack grows down. */ +#define _STACK_GROWS_DOWN 1 + +#endif /* stackinfo.h */ -- cgit v1.2.3