diff options
Diffstat (limited to 'libc/sysdeps/linux/sparc/bits')
| -rw-r--r-- | libc/sysdeps/linux/sparc/bits/atomicity.h | 98 | ||||
| -rw-r--r-- | libc/sysdeps/linux/sparc/bits/profil-counter.h | 26 | ||||
| -rw-r--r-- | libc/sysdeps/linux/sparc/bits/sigcontextinfo.h | 29 | ||||
| -rw-r--r-- | libc/sysdeps/linux/sparc/bits/stackinfo.h | 28 |
4 files changed, 181 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/sparc/bits/atomicity.h b/libc/sysdeps/linux/sparc/bits/atomicity.h new file mode 100644 index 000000000..ec82541c2 --- /dev/null +++ b/libc/sysdeps/linux/sparc/bits/atomicity.h @@ -0,0 +1,98 @@ +/* Low-level functions for atomic operations. Sparc32 version. + 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. */ + +#ifndef _ATOMICITY_H +#define _ATOMICITY_H 1 + +#include <inttypes.h> + +static int +__attribute__ ((unused)) +exchange_and_add (volatile uint32_t *mem, int val) +{ + static unsigned char lock; + int result, tmp; + + __asm__ __volatile__("1: ldstub [%1], %0\n\t" + " cmp %0, 0\n\t" + " bne 1b\n\t" + " nop" + : "=&r" (tmp) + : "r" (&lock) + : "memory"); + result = *mem; + *mem += val; + __asm__ __volatile__("stb %%g0, [%0]" + : /* no outputs */ + : "r" (&lock) + : "memory"); + return result; +} + +static void +__attribute__ ((unused)) +atomic_add (volatile uint32_t *mem, int val) +{ + static unsigned char lock; + int tmp; + + __asm__ __volatile__("1: ldstub [%1], %0\n\t" + " cmp %0, 0\n\t" + " bne 1b\n\t" + " nop" + : "=&r" (tmp) + : "r" (&lock) + : "memory"); + *mem += val; + __asm__ __volatile__("stb %%g0, [%0]" + : /* no outputs */ + : "r" (&lock) + : "memory"); +} + +static int +__attribute__ ((unused)) +compare_and_swap (volatile long int *p, long int oldval, long int newval) +{ + static unsigned char lock; + int ret, tmp; + + __asm__ __volatile__("1: ldstub [%1], %0\n\t" + " cmp %0, 0\n\t" + " bne 1b\n\t" + " nop" + : "=&r" (tmp) + : "r" (&lock) + : "memory"); + if (*p != oldval) + ret = 0; + else + { + *p = newval; + ret = 1; + } + __asm__ __volatile__("stb %%g0, [%0]" + : /* no outputs */ + : "r" (&lock) + : "memory"); + + return ret; +} + +#endif /* atomicity.h */ diff --git a/libc/sysdeps/linux/sparc/bits/profil-counter.h b/libc/sysdeps/linux/sparc/bits/profil-counter.h new file mode 100644 index 000000000..1e22e8cce --- /dev/null +++ b/libc/sysdeps/linux/sparc/bits/profil-counter.h @@ -0,0 +1,26 @@ +/* Low-level statistical profiling support function. Linux/SPARC version. + Copyright (C) 1997, 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. */ + +#include <signal.h> + +void +profil_counter (int signo, struct sigcontext *si) +{ + profil_count ((void *) si->si_regs.pc); +} diff --git a/libc/sysdeps/linux/sparc/bits/sigcontextinfo.h b/libc/sysdeps/linux/sparc/bits/sigcontextinfo.h new file mode 100644 index 000000000..2c2770d07 --- /dev/null +++ b/libc/sysdeps/linux/sparc/bits/sigcontextinfo.h @@ -0,0 +1,29 @@ +/* Copyright (C) 1999, 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 1999. + + 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 struct sigcontext * +#define SIGCONTEXT_EXTRA_ARGS +#define GET_PC(__ctx) ((void *) ((__ctx)->si_regs.pc)) +#define ADVANCE_STACK_FRAME(__next) \ + ((void *) (((unsigned *)(__next))+14)) + +#define GET_STACK(__ctx) ((void *) (__ctx)->si_regs.u_regs[14]) +#define GET_FRAME(__ctx) ADVANCE_STACK_FRAME (GET_STACK(__ctx)) +#define CALL_SIGHANDLER(handler, signo, ctx) \ + (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx)) diff --git a/libc/sysdeps/linux/sparc/bits/stackinfo.h b/libc/sysdeps/linux/sparc/bits/stackinfo.h new file mode 100644 index 000000000..fd34e2deb --- /dev/null +++ b/libc/sysdeps/linux/sparc/bits/stackinfo.h @@ -0,0 +1,28 @@ +/* Copyright (C) 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. */ + +/* This file contains a bit of information about the stack allocation + of the processor. */ + +#ifndef _STACKINFO_H +#define _STACKINFO_H 1 + +/* On sparc the stack grows down. */ +#define _STACK_GROWS_DOWN 1 + +#endif /* stackinfo.h */ |