$NetBSD: patch-am,v 1.1 2001/01/09 16:14:21 briggs Exp $

--- /dev/null	Wed Dec 31 19:00:00 1969
+++ machdep/engine-powerpc-netbsd.h	Tue Jan  9 02:42:26 2001
@@ -0,0 +1,206 @@
+/* ==== machdep.h ============================================================
+ * Copyright (c) 1994 Chris Provenzano (proven@athena.mit.edu) and
+ * Ken Raeburn (raeburn@mit.edu).
+ *
+ * engine-alpha-osf1.h,v 1.4.4.1 1995/12/13 05:41:42 proven Exp
+ *
+ */
+
+#include <unistd.h>
+#include <setjmp.h>
+#include <sys/time.h>
+#include <sys/cdefs.h>
+#include <sys/signal.h>  /* for _NSIG */
+#include <sys/syscall.h>
+
+#include <unistd.h>
+#include <setjmp.h>
+#include <stdlib.h>
+#include <fcntl.h>
+
+#include <pthread/sysfunc.h>
+
+/*
+ * The first machine dependent functions are the SEMAPHORES
+ * needing the test and set instruction.
+ */
+#define SEMAPHORE_CLEAR 0
+#define SEMAPHORE_SET   0xffff
+
+#define SEMAPHORE_TEST_AND_SET(lock)            \
+({                                              \
+        volatile long t1, temp = SEMAPHORE_SET; \
+        __asm__ volatile(                       \
+	  "1: lwarx  %0,0,%1;			\
+	      cmpwi  %0, 0;                     \
+	      bne    2f;                        \
+	      stwcx. %2,0,%1;                   \
+	      bne-   1b;                        \
+	   2: "                                 \
+          :"=r" (t1)                            \
+          :"m" (lock), "r" (temp));             \
+        t1;                                     \
+})
+
+#define SEMAPHORE_RESET(lock)           *lock = SEMAPHORE_CLEAR
+
+/*
+ * New types
+ */
+typedef int semaphore;
+
+/*
+ * sigset_t macros
+ */
+#define        SIG_ANY(sig)            (sig)
+#define        SIGMAX                  (_NSIG-1)
+
+/*
+ * New Strutures
+ */
+struct machdep_pthread {
+    void                       *(*start_routine)(void *);
+    void                       *start_argument;
+    void                       *machdep_stack;
+    struct itimerval           machdep_timer;
+    jmp_buf	               machdep_istate;
+    unsigned long              machdep_fstate[66];
+				/* 64-bit fp regs 0-31 + fpscr */
+				/* We pretend the fpscr is 64 bits */
+};
+
+/*
+ * Static machdep_pthread initialization values.
+ * For initial thread only.
+ */
+#define MACHDEP_PTHREAD_INIT    \
+       { NULL, NULL, NULL, { { 0, 0 }, { 0, 100000 } }, { 0 }, { 0 } }
+
+/*
+ * Minimum stack size
+ */
+#define PTHREAD_STACK_MIN      2048
+
+/*
+ * Some fd flag defines that are necessary to distinguish between posix
+ * behavior and bsd4.3 behavior.
+ */
+#define __FD_NONBLOCK          O_NONBLOCK
+
+/*
+ * New functions
+ */
+
+__BEGIN_DECLS
+
+#if defined(PTHREAD_KERNEL)
+
+#define __machdep_stack_get(x)      (x)->machdep_stack
+#define __machdep_stack_set(x, y)   (x)->machdep_stack = y
+#define __machdep_stack_repl(x, y)                          \
+{                                                           \
+    if ((stack = __machdep_stack_get(x))) {                 \
+        __machdep_stack_free(stack);                        \
+    }                                                       \
+    __machdep_stack_set(x, y);                              \
+}
+
+int machdep_save_state(void);
+
+void __machdep_save_fp_state(unsigned long *);
+void __machdep_restore_fp_state(unsigned long *);
+
+void *machdep_pthread_cleanup(struct machdep_pthread *machdep_pthread);
+void machdep_pthread_start(void);
+
+/* ==========================================================================
+ * __machdep_stack_free()
+ */
+inline static
+void __machdep_stack_free(void * stack)
+{
+    free(stack);
+}
+
+/* ==========================================================================
+ * __machdep_stack_alloc()
+ */
+inline static
+void * __machdep_stack_alloc(size_t size)
+{
+    return(malloc(size));
+}
+
+/* ==========================================================================
+ * machdep_sys_creat()
+ */
+static inline int
+machdep_sys_creat(char * path, int mode)
+{  
+        return(machdep_sys_open(path, O_WRONLY | O_CREAT | O_TRUNC, mode));
+}  
+
+/* ==========================================================================
+ * machdep_sys_wait3()
+ */ 
+static inline int
+machdep_sys_wait3(int * b, int c, struct rusage *d)
+{   
+        return(machdep_sys_wait4(0, b, c, d));
+}  
+
+/* ==========================================================================
+ * machdep_sys_waitpid()
+ */  
+static inline int
+machdep_sys_waitpid(int a, int * b, int c)
+{
+        return(machdep_sys_wait4(a, b, c, NULL));
+}
+
+/* ==========================================================================
+ * machdep_sys_getdtablesize()
+ */
+static inline int
+machdep_sys_getdtablesize(void)
+{
+        return(sysconf(_SC_OPEN_MAX));
+}
+
+/* ==========================================================================
+ * machdep_sys_lseek()
+ */
+static inline
+off_t machdep_sys_lseek(int fd, off_t offset, int whence)
+{
+       return(__syscall((quad_t)SYS_lseek, fd, 0, offset, whence));
+}
+
+static inline
+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()
+ */
+static inline int
+machdep_sys_getdirentries(int fd, char * buf, int len, int * seek)
+{
+        return(machdep_sys_getdents(fd, buf, len));
+} 
+#endif
+
+__END_DECLS