diff options
Diffstat (limited to 'mit-pthreads/machdep/engine-powerpc-netbsd.c')
| -rw-r--r-- | mit-pthreads/machdep/engine-powerpc-netbsd.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/mit-pthreads/machdep/engine-powerpc-netbsd.c b/mit-pthreads/machdep/engine-powerpc-netbsd.c new file mode 100644 index 00000000000..fc17e3de5d0 --- /dev/null +++ b/mit-pthreads/machdep/engine-powerpc-netbsd.c @@ -0,0 +1,227 @@ +/* ==== machdep.c ============================================================ + * Copyright (c) 1993, 1994 Chris Provenzano, proven@athena.mit.edu + * + * Description : Machine dependent functions for NetBSD/PowerPC (1.5+) + * + * 1.00 93/08/04 proven + * -Started coding this file. + * + * 2001/01/10 briggs + * -Modified to make it go with NetBSD/PowerPC + */ + +#ifndef lint +static const char rcsid[] = "engine-alpha-osf1.c,v 1.4.4.1 1995/12/13 05:41:37 proven Exp"; +#endif + +#include <pthread.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/syscall.h> +#include <stdlib.h> +#include <fcntl.h> +#include <stdio.h> + +/* ========================================================================== + * machdep_pthread_start() + */ +void machdep_pthread_start(void) +{ + context_switch_done(); + pthread_sched_resume (); + + /* XXXMLG + * This is EXTREMELY bogus, but it seems that this function is called + * with the pthread kernel locked. If this happens, __errno() will + * return the wrong address until after the first context switch. + * + * Clearly there is a leak of pthread_kernel somewhere, but until + * it is found, we force a context switch here, just before calling + * the thread start routine. When we return from pthread_yield + * the kernel will be unlocked. + */ + pthread_yield(); + + /* Run current threads 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 *), 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; + + /* Set up new stack frame so that it looks like it returned from a + longjmp() to the beginning of machdep_pthread_start(). */ + /* state is sigmask, then r8-r31 where r11 is the LR + * So, istate[3] is r10, which is the SP + * So, istate[4] is r11, which is the LR + * So, istate[5] is r12, which is the CR + */ + machdep_pthread->machdep_istate[4] = (long)machdep_pthread_start; + machdep_pthread->machdep_istate[5] = 0; + + /* PowerPC stack starts high and builds down, and needs to be 16-byte + aligned. */ + machdep_pthread->machdep_istate[3] = + ((long) machdep_pthread->machdep_stack + stack_size) & ~0xf; +} + +/* ========================================================================== + * machdep_save_state() + */ +int machdep_save_state(void) +{ + return( _setjmp(pthread_run->machdep_data.machdep_istate) ); +} + +void machdep_restore_state(void) +{ + _longjmp(pthread_run->machdep_data.machdep_istate, 1); +} + +void machdep_save_float_state (struct pthread *pthread) +{ + __machdep_save_fp_state(pthread->machdep_data.machdep_fstate); +} + +void machdep_restore_float_state (void) +{ + __machdep_restore_fp_state(pthread_run->machdep_data.machdep_fstate); +} + +/* ========================================================================== + * 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_pthread_cleanup() + */ +void *machdep_pthread_cleanup(struct machdep_pthread *machdep_pthread) +{ + return(machdep_pthread->machdep_stack); +} + +void *machdep_pthread_cleanup(struct machdep_pthread *machdep_pthread); +void machdep_pthread_start(void); + +/* ========================================================================== + * __machdep_stack_free() + */ +void +__machdep_stack_free(void * stack) +{ + free(stack); +} + +/* ========================================================================== + * __machdep_stack_alloc() + */ +void * +__machdep_stack_alloc(size_t size) +{ + return(malloc(size)); +} + +/* ========================================================================== + * machdep_sys_creat() + */ +int +machdep_sys_creat(char * path, int mode) +{ + return(machdep_sys_open(path, O_WRONLY | O_CREAT | O_TRUNC, mode)); +} + +/* ========================================================================== + * machdep_sys_wait3() + */ +int +machdep_sys_wait3(int * b, int c, int *d) +{ + return(machdep_sys_wait4(0, b, c, d)); +} + +/* ========================================================================== + * machdep_sys_waitpid() + */ +int +machdep_sys_waitpid(int a, int * b, int c) +{ + return(machdep_sys_wait4(a, b, c, NULL)); +} + +/* ========================================================================== + * machdep_sys_getdtablesize() + */ +int +machdep_sys_getdtablesize(void) +{ + return(sysconf(_SC_OPEN_MAX)); +} + +/* ========================================================================== + * machdep_sys_lseek() + */ +off_t +machdep_sys_lseek(int fd, off_t offset, int whence) +{ + 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; +} + + +/* ========================================================================== + * machdep_sys_getdirentries() + */ +int +machdep_sys_getdirentries(int fd, char * buf, int len, int * seek) +{ + return(machdep_sys_getdents(fd, buf, len)); +} |