diff options
Diffstat (limited to 'mit-pthreads/machdep/engine-m68000-netbsd.c')
| -rw-r--r-- | mit-pthreads/machdep/engine-m68000-netbsd.c | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/mit-pthreads/machdep/engine-m68000-netbsd.c b/mit-pthreads/machdep/engine-m68000-netbsd.c new file mode 100644 index 00000000000..6346c36ca7c --- /dev/null +++ b/mit-pthreads/machdep/engine-m68000-netbsd.c @@ -0,0 +1,256 @@ +/* ==== machdep.c ============================================================ + * Copyright (c) 1993, 1994 Chris Provenzano, proven@athena.mit.edu + * + * Copyright (c) 1993 by Chris Provenzano, proven@mit.edu + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Chris Provenzano. + * 4. The name of Chris Provenzano may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL CHRIS PROVENZANO BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * Description : Machine dependent functions for NetBSD on i386 + * + * 1.00 93/08/04 proven + * -Started coding this file. + * + * m68k work from David Leonard <david.leonard@it.uq.edu.au>. + * updated and NetBSD/m68k work from Andy Finnell <andyf@vei.net>. + * + */ + +#ifndef lint +static const char rcsid[] = "$Id$"; +#endif + +#include "pthread.h" +#include <sys/syscall.h> +#include <sys/stat.h> + +/* ========================================================================== + * machdep_save_state() + */ +int machdep_save_state(void) +{ + return( _setjmp(pthread_run->machdep_data.machdep_state) ); +} + +/* ========================================================================== + * machdep_restore_state() + */ +void machdep_restore_state(void) +{ + _longjmp(pthread_run->machdep_data.machdep_state, 1); +} + +/* ========================================================================== + * machdep_save_state() + */ +void machdep_save_float_state(struct pthread * pthread) +{ + char * fdata = pthread->machdep_data.machdep_fstate; + + __asm__ ( "fmovem fp0-fp7,%0"::"m" (*fdata) ); + __asm__ ( "fmovem fpcr/fpsr/fpi,%0"::"m" (fdata[80]) ); +} + +/* ========================================================================== + * machdep_restore_float_state() + */ +void machdep_restore_float_state(void) +{ + char * fdata = pthread_run->machdep_data.machdep_fstate; + + __asm__ ( "fmovem %0,fp0-fp7"::"m" (*fdata) ); + __asm__ ( "fmovem %0,fpcr/fpsr/fpi"::"m" (fdata[80]) ); + +} + +/* ========================================================================== + * machdep_set_thread_timer() + */ +void machdep_set_thread_timer(struct machdep_pthread *machdep_pthread) +{ + if (setitimer(ITIMER_VIRTUAL, &(machdep_pthread->machdep_timer), NULL)) { + PANIC(); + } +} + +/* ========================================================================== + * machdep_unset_thread_timer() + */ +void machdep_unset_thread_timer(struct machdep_pthread *machdep_pthread) +{ + struct itimerval zeroval = { { 0, 0 }, { 0, 0 } }; + + if (setitimer(ITIMER_VIRTUAL, &zeroval, NULL)) { + PANIC(); + } +} + +/* ========================================================================== + * __machdep_stack_free() + */ +void __machdep_stack_free(void * stack) +{ + free(stack); +} + +/* ========================================================================== + * __machdep_stack_alloc() + */ +void * __machdep_stack_alloc(size_t size) +{ + void * stack; + + return((void*)malloc(size)); +} + +/* ========================================================================== + * machdep_pthread_cleanup() + */ +void *machdep_pthread_cleanup(struct machdep_pthread *machdep_pthread) +{ + return(machdep_pthread->machdep_stack); +} + +/* ========================================================================== + * machdep_pthread_start() + */ +void machdep_pthread_start(void) +{ + context_switch_done(); + pthread_sched_resume(); + + /* Run current thread's start routine with argument */ + pthread_exit( + pthread_run->machdep_data.start_routine( + pthread_run->machdep_data.start_argument + ) + ); + + /* should never reach here */ + PANIC(); +} + +/* ========================================================================== + * __machdep_pthread_create() + */ +void __machdep_pthread_create(struct machdep_pthread *machdep_pthread, + void *(* start_routine)(), void *start_argument, + long stack_size, long nsec, long flags) +{ + machdep_pthread->start_routine = start_routine; + machdep_pthread->start_argument = start_argument; + + machdep_pthread->machdep_timer.it_value.tv_sec = 0; + machdep_pthread->machdep_timer.it_interval.tv_sec = 0; + machdep_pthread->machdep_timer.it_interval.tv_usec = 0; + machdep_pthread->machdep_timer.it_value.tv_usec = nsec / 1000; + + _setjmp(machdep_pthread->machdep_state); + /* + * Set up new stack frame so that it looks like it + * returned from a longjmp() to the beginning of + * machdep_pthread_start(). + * + * state is the set_jmp structure, which for m68k is: + * long onstack_flag; // [0] + * long sigmask; // [1] + * long sp; // [2] + * long fp; // [3] + * long ap; // [4] + * long pc; // [5] + * long ps; // [6] + * long regs[10]; // non scratch registers + */ + machdep_pthread->machdep_state[5] = (long)machdep_pthread_start; + + /* Stack starts high and builds down. */ + machdep_pthread->machdep_state[2] = + (int)machdep_pthread->machdep_stack + stack_size; +} + +/* ========================================================================== + * machdep_sys_wait3() + */ +machdep_sys_wait3(int * b, int c, int * d) +{ + return(machdep_sys_wait4(0, b, c, d)); +} + +/* ========================================================================== + * machdep_sys_waitpid() + */ +machdep_sys_waitpid(int a, int * b, int c) +{ + return(machdep_sys_wait4(a, b, c, NULL)); +} + +/* ========================================================================== + * machdep_sys_getdtablesize() + */ +machdep_sys_getdtablesize() +{ + return(sysconf(_SC_OPEN_MAX)); +} + +/* ========================================================================== + * machdep_sys_getdirentries() + */ +machdep_sys_getdirentries(int fd, char * buf, int len, int * seek) +{ + return(machdep_sys_getdents(fd, buf, len)); +} + +/* ========================================================================== + * machdep_sys_lseek() + */ +off_t machdep_sys_lseek(int fd, off_t offset, int whence) +{ + extern off_t __syscall(); + + return(__syscall((quad_t)SYS_lseek, fd, 0, offset, whence)); +} + +int machdep_sys_ftruncate( int fd, off_t length) +{ + quad_t q; + int rv; + + q = __syscall((quad_t)SYS_ftruncate, fd,0, length); + if( /* LINTED constant */ sizeof( quad_t ) == sizeof( register_t ) || + /* LINTED constant */ BYTE_ORDER == LITTLE_ENDIAN ) + rv = (int)q; + else + rv = (int)((u_quad_t)q >> 32); + + return rv; +} + +int machdep_sys_fstat( int f, struct stat* st ) +{ + return __fstat13(f,st); +} |