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$NetBSD: patch-ah,v 1.5 2001/01/10 06:03:15 briggs Exp $
*** /dev/null Wed Dec 31 19:00:00 1969
--- mit-pthreads/machdep/engine-powerpc-netbsd.c Tue Jan 9 22:35:36 2001
***************
*** 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));
+ }
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