diff options
Diffstat (limited to 'lib/libpthread/machdep/engine-sparc-sunos-5.3.c')
| -rw-r--r-- | lib/libpthread/machdep/engine-sparc-sunos-5.3.c | 308 |
1 files changed, 308 insertions, 0 deletions
diff --git a/lib/libpthread/machdep/engine-sparc-sunos-5.3.c b/lib/libpthread/machdep/engine-sparc-sunos-5.3.c new file mode 100644 index 00000000000..924f3279141 --- /dev/null +++ b/lib/libpthread/machdep/engine-sparc-sunos-5.3.c @@ -0,0 +1,308 @@ +/* ==== machdep.c ============================================================ + * Copyright (c) 1993, 1994 Chris Provenzano, proven@athena.mit.edu + * + * Description : Machine dependent functions for SunOS-4.1.3 on sparc + * + * 1.00 93/08/04 proven + * -Started coding this file. + */ + +#ifndef lint +static const char rcsid[] = "$Id: engine-sparc-sunos-5.3.c,v 1.1 1998/07/21 13:19:15 peter Exp $"; +#endif + +#include <pthread.h> +#include <errno.h> +#include <fcntl.h> +#include <stdlib.h> +#include <unistd.h> +#include <sys/socket.h> +#include <sys/procset.h> +#include <sys/systeminfo.h> +#include <poll.h> + +/* ========================================================================== + * machdep_save_state() + */ +int machdep_save_state(void) +{ + /* Save register windows onto stackframe */ + __asm__ ("ta 3"); + + 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_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); +} + +/* ========================================================================== + * machdep_pthread_start() + */ +void machdep_pthread_start(void) +{ + context_switch_done(); + pthread_sched_resume(); + + /* 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_stack_free() + */ +void __machdep_stack_free(void * stack) +{ + free(stack); +} + +/* ========================================================================== + * __machdep_stack_alloc() + */ +void * __machdep_stack_alloc(size_t size) +{ + void * stack; + + return(malloc(size)); +} + +/* ========================================================================== + * 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; + + /* Save register windows onto stackframe */ + __asm__ ("ta 3"); + + if (setjmp(machdep_pthread->machdep_state)) { + machdep_pthread_start(); + } + + /* + * Set up new stact frame so that it looks like it + * returned from a longjmp() to the beginning of + * machdep_pthread_start(). + */ + + /* Sparc stack starts high and builds down. */ + machdep_pthread->machdep_state[1] = + (int)machdep_pthread->machdep_stack + stack_size - 1024; + machdep_pthread->machdep_state[1] &= ~7; + +} + +/* ========================================================================== + * machdep_sys_getdirentries() + */ +int machdep_sys_getdirentries(int fd, char * buf, int len, int * seek) +{ + return(machdep_sys_getdents(fd, buf, len)); +} + +/* ========================================================================== + * machdep_sys_wait3() + */ +machdep_sys_wait3(int * b, int c, int * d) +{ + return(-ENOSYS); + /* return(machdep_sys_wait4(0, b, c, d)); */ +} + +/* ========================================================================== + * machdep_sys_waitpid() + */ +machdep_sys_waitpid(int a, int * b, int c) +{ + idtype_t id; + + switch (a) { + case -1: + id = P_ALL; + break; + case 0: + a = machdep_sys_pgrpsys(0); + id = P_PGID; + break; + default: + if (a < 0) { + id = P_PGID; + a = -a; + } else { + id = P_PID; + } + break; + } + + return(machdep_sys_waitsys(id, a, b, c)); +} + +/* ========================================================================== + * machdep_sys_dup2() + */ +machdep_sys_dup2(int a, int b) +{ + machdep_sys_close(b); + machdep_sys_fcntl(a, F_DUPFD, b); +} + +/* ========================================================================== + * machdep_sys_ftruncate() + */ +machdep_sys_ftruncate(int a, off_t b) +{ + flock_t c; + + c.l_len = 0; + c.l_start = b; + c.l_whence = 0; + return(machdep_sys_fcntl(a, F_FREESP, c)); +} + +/* ========================================================================== + * machdep_sys_select() + * Recoded to be quicker by Monty + */ +static fd_set bogus_fds; /* Always zero, never changed */ + +machdep_sys_select(int nfds, fd_set *readfds, fd_set *writefds, + fd_set *exceptfds, struct timeval *timeout) +{ + struct pollfd fds[64],*ptr; + int i, fds_count, time_out, found; + + /* Make sure each arg has a valid pointer */ + if ((readfds == NULL) || (writefds == NULL) || (exceptfds == NULL)) { + if (exceptfds == NULL) { + exceptfds = &bogus_fds; + } + if (writefds == NULL) { + writefds = &bogus_fds; + } + if (readfds == NULL) { + readfds = &bogus_fds; + } + } + + ptr=fds; + for (i = 0 ; i < nfds; i++) + { + if (FD_ISSET(i, readfds)) + { + if (FD_ISSET(i, writefds)) + ptr->events= POLLIN | POLLOUT; + else + ptr->events= POLLIN; + (ptr++)->fd=i; + } + else if (FD_ISSET(i, writefds)) + { + ptr->events=POLLOUT; + (ptr++)->fd=i; + } + } + FD_ZERO(readfds); + FD_ZERO(writefds); + FD_ZERO(exceptfds); + time_out = timeout->tv_usec / 1000 + timeout->tv_sec * 1000; + fds_count=(int) (ptr-fds); + while ((found = machdep_sys_poll(fds, fds_count, time_out)) <= 0) + { + if (found != -ERESTART) /* Try again if restartable */ + return(found); /* Usually 0 ; Cant read or write */ + } + + while (ptr-- != fds) + { + if (ptr->revents & POLLIN) + FD_SET(ptr->fd, readfds); + if (ptr->revents & POLLOUT) + FD_SET(ptr->fd,writefds); + } + return(found); +} + +/* ========================================================================== + * machdep_sys_getdtablesize() + */ +machdep_sys_getdtablesize() +{ + return(sysconf(_SC_OPEN_MAX)); +} + +/* ========================================================================== + * getpagesize() + */ +getpagesize() +{ + return(sysconf(_SC_PAGESIZE)); +} + +/* ========================================================================== + * gethostname() + */ +int gethostname(char * name, int namelen) +{ + if (sysinfo(SI_HOSTNAME, name, namelen) == NOTOK) { + return(NOTOK); + } else { + return(OK); + } +} + +/* ========================================================================== + * machdep_sys_sigaction() + * + * This is VERY temporary. + */ +int machdep_sys_sigaction(int a, void * b, void * c) +{ + return(sigaction(a, b, c)); +} |