diff options
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/mips')
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/mips/pt-machine.h | 90 | ||||
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/mips/sigcontextinfo.h | 27 |
2 files changed, 117 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/sysdeps/mips/pt-machine.h b/libpthread/linuxthreads/sysdeps/mips/pt-machine.h new file mode 100644 index 000000000..527392308 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/mips/pt-machine.h @@ -0,0 +1,90 @@ +/* Machine-dependent pthreads configuration and inline functions. + + Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ralf Baechle <ralf@gnu.ai.mit.edu>. + Based on the Alpha version by Richard Henderson <rth@tamu.edu>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, write to the Free Software Foundation, Inc., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + TODO: This version makes use of MIPS ISA 2 features. It won't + work on ISA 1. These machines will have to take the overhead of + a sysmips(MIPS_ATOMIC_SET, ...) syscall which isn't implemented + yet correctly. There is however a better solution for R3000 + uniprocessor machines possible. */ + +#ifndef PT_EI +# define PT_EI extern inline +#endif + + +/* Spinlock implementation; required. */ +PT_EI long int +testandset (int *spinlock) +{ + long int ret, temp; + + __asm__ __volatile__( + "# Inline spinlock test & set\n\t" + ".set\tmips2\n" + "1:\tll\t%0,%3\n\t" + "bnez\t%0,2f\n\t" + ".set\tnoreorder\n\t" + "li\t%1,1\n\t" + ".set\treorder\n\t" + "sc\t%1,%2\n\t" + "beqz\t%1,1b\n" + "2:\t.set\tmips0\n\t" + "/* End spinlock test & set */" + : "=&r"(ret), "=&r" (temp), "=m"(*spinlock) + : "m"(*spinlock) + : "memory"); + + return ret; +} + + +/* Get some notion of the current stack. Need not be exactly the top + of the stack, just something somewhere in the current frame. */ +#define CURRENT_STACK_FRAME stack_pointer +register char * stack_pointer __asm__ ("$29"); + + +/* Compare-and-swap for semaphores. */ + +#define HAS_COMPARE_AND_SWAP +PT_EI int +__compare_and_swap (long int *p, long int oldval, long int newval) +{ + long ret; + + __asm__ __volatile__ ( + "/* Inline compare & swap */\n\t" + ".set\tmips2\n" + "1:\tll\t%0,%4\n\t" + ".set\tnoreorder\n\t" + "bne\t%0,%2,2f\n\t" + "move\t%0,%3\n\t" + ".set\treorder\n\t" + "sc\t%0,%1\n\t" + "beqz\t%0,1b\n" + "2:\t.set\tmips0\n\t" + "/* End compare & swap */" + : "=&r"(ret), "=m"(*p) + : "r"(oldval), "r"(newval), "m"(*p)); + + return ret; +} diff --git a/libpthread/linuxthreads/sysdeps/mips/sigcontextinfo.h b/libpthread/linuxthreads/sysdeps/mips/sigcontextinfo.h new file mode 100644 index 000000000..a51c6f043 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/mips/sigcontextinfo.h @@ -0,0 +1,27 @@ +/* Copyright (C) 2000, 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger <aj@suse.de>, 2000. + + 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 unsigned long _code, struct sigcontext * +#define SIGCONTEXT_EXTRA_ARGS _code, +#define GET_PC(ctx) ((void *) ctx->sc_pc) +#define GET_FRAME(ctx) ((void *) ctx->sc_regs[30]) +#define GET_STACK(ctx) ((void *) ctx->sc_regs[29]) +#define CALL_SIGHANDLER(handler, signo, ctx) \ + (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx)) |