sim-poll.patch

microwindows移植到S3C44B0的源码

sim/v850/ChangeLog:
2001-09-03  Miles Bader  <[e-mail]>

	* simops.c (OP_10007E0): Add handling of `poll' system call.
	* configure.in (AC_CHECK_FUNCS): Add `poll'.
	(AC_CHECK_HEADERS): Add `poll.h'.

libgloss/ChangeLog:
2001-09-03  Miles Bader  <[e-mail]>

	* v850/sys/syscall.h (SYS_poll): New syscall.

diff -up sim/v850/simops.c.\~3\~ sim/v850/simops.c
--- sim/v850/simops.c.~3~	Mon Aug 27 17:34:08 2001
+++ sim/v850/simops.c	Mon Sep  3 15:50:09 2001
@@ -22,6 +22,10 @@
 #endif
 #endif
 
+#ifdef HAVE_POLL_H
+#include <poll.h>
+#endif
+
 #include "targ-vals.h"
 
 #include "libiberty.h"
@@ -1773,6 +1777,44 @@ OP_10007E0 ()
 	    store_mem (buf + 20, 4, host_stat.st_atime);
 	    store_mem (buf + 28, 4, host_stat.st_mtime);
 	    store_mem (buf + 36, 4, host_stat.st_ctime);
+	  }
+	  break;
+#endif
+#endif
+
+#ifdef HAVE_POLL
+#ifdef TARGET_SYS_poll
+	case TARGET_SYS_poll:
+	  {
+	    reg_t sfds;
+	    int fd, nevents;
+	    int nfds = PARM2;
+	    int fds_len = nfds * sizeof (struct pollfd);
+	    struct pollfd *fds = zalloc (fds_len);
+
+	    /* Copy the fd structures from sim memory to real memory. */
+	    for (fd = 0, sfds = PARM1; fd < nfds; fd++, sfds += 8)
+	      {
+		fds[fd].fd = load_mem (sfds, 4);
+		fds[fd].events = load_mem (sfds + 4, 2);
+		fds[fd].revents = load_mem (sfds + 6, 2);
+	      }
+
+	    nevents = poll (fds, nfds, PARM3);
+	    RETVAL = nevents;
+
+	    for (fd = 0, sfds = PARM1;
+		 fd < nfds && nevents > 0;
+		 fd++, sfds += 8)
+	      {
+		if (fds[fd].revents)
+		  {
+		    store_mem (sfds + 6, 2, fds[fd].revents);
+		    nevents--;
+		  }
+	      }
+
+	    zfree (fds);
 	  }
 	  break;
 #endif
diff -up sim/v850/configure.in.\~1\~ sim/v850/configure.in
--- sim/v850/configure.in.~1~	Mon Mar 26 13:20:00 2001
+++ sim/v850/configure.in	Mon Sep  3 13:54:13 2001
@@ -12,7 +12,7 @@ SIM_AC_OPTION_WARNINGS
 SIM_AC_OPTION_RESERVED_BITS
 SIM_AC_OPTION_BITSIZE(32,31)
 
-AC_CHECK_FUNCS(time chmod utime fork execve execv chown)
-AC_CHECK_HEADERS(unistd.h stdlib.h string.h strings.h utime.h time.h)
+AC_CHECK_FUNCS(time chmod utime fork execve execv chown poll)
+AC_CHECK_HEADERS(unistd.h stdlib.h string.h strings.h utime.h time.h poll.h)
 
 SIM_AC_OUTPUT
diff -up libgloss/v850/sys/syscall.h.\~1\~ libgloss/v850/sys/syscall.h
--- libgloss/v850/sys/syscall.h.~1~	Thu Oct  5 19:59:59 2000
+++ libgloss/v850/sys/syscall.h	Mon Sep  3 16:05:02 2001
@@ -25,14 +25,14 @@
 #define SYS_fstat       22
 #define SYS_time        23
 
-
 #define SYS_ARG         24
-#define SYS_stat        38
 
+#define SYS_stat        38
+#define SYS_poll	29
 
 #define SYS_pipe        42
 #define SYS_execve      59
-#define   SYS_times       43
+#define SYS_times       43
 #define SYS_gettimeofday 116
 
 #define SYS_utime       201 /* not really a system call */