Add AIX5 procfs support.

gdb/ChangeLog

@@ -1,3 +1,50 @@
+2001-03-26  Kevin Buettner  <kevinb@redhat.com>
+
+	* proc-utils.h (procfs_ctl_t): New typedef.
+	* proc-api.c (write_with_trace): Change type of ``opcode'' from
+	long to procfs_ctl_t.  Don't assume that the target has defined
+	BREAKPOINT.  Handle case in which PCRESET is the same as PCUNSET.
+	* proc-events.c (sys/syscall.h, sys/fault.h): Include conditionally.
+	* procfs.c (sys/fault.h, sys/syscall.h): Include conditionally.
+	(gdb_sigset_t, gdb_sigaction_t, gdb_siginfo_t, gdb_premptysysset)
+	(gdb_praddsysset, gdb_prdelsysset, gdb_pr_issyssetmember):
+	Conditionally define as appropriate for AIX/non-AIX systems.  Use
+	these defines/typedefs as appropriate elsewhere in file.
+	(struct procinfo): Change type of saved_sigset and saved_sighold
+	from sigset_t to gdb_sigset_t.  Make saved_exitset and
+	saved_entryset pointer variables.  Add two new fields, num_syscalls
+	and syscall_names.
+	(DYNAMIC_SYSCALLS): Define when HAVE_PRSYSENT_T is defined.
+	(sysset_t_size, sysset_t_alloc): New functions.
+	(load_syscalls, free_syscalls, find_syscall): New functions for
+	platforms which define DYNAMIC_SYSCALLS.
+	(create_procinfo): Call load_syscalls.
+	(destroy_one_procinfo): Call free_syscalls.
+	(GDBRESET): Don't define twice.
+	(proc_modify_flag): Change type of operation code array `arg'
+	from long to procfs_ctl_t.
+	(proc_stop_process, proc_wait_for_stop, proc_run_process)
+	(proc_set_traced_signals, proc_set_traced_faults)
+	(proc_set_traced_sysentry, proc_set_traced_sysexit)
+	(proc_set_held_signals, proc_clear_current_fault)
+	(proc_set_current_signal, proc_clear_current_signal, proc_set_gregs)
+	(proc_set_fpregs, proc_kill, proc_set_watchpoint): Likewise for `cmd'.
+	(proc_set_traced_sysentry): Dynamically allocate variable sized
+	struct gdb_proc_ctl_pcsentry.  Also, free it at function exit.
+	(proc_set_traced_sysexit): Dynamically allocate variable
+	sized struct gdb_proc_ctl_pcsexit.  Also, free it at
+	function exit.
+	(proc_get_traced_sysentry, proc_get_traced_sysexit): Add new code
+	for reading the sysset_t struct on AIX5.
+	(procfs_debug_inferior): Don't assume that SYS_exit will be
+	defined.  Add new code for finding certain syscalls on AIX5.
+	(syscall_is_lwp_exit, syscall_is_exit, syscall_is_exec)
+	(syscall_is_lwp_create): New functions.
+	(procfs_wait): Restructured code which checks for certain
+	system calls to use the new syscall_is_... functions.
+	(procfs_notice_signals): Account for the fact that saved_entryset
+	and saved_exitset in struct procinfo are now pointers.
+
 2001-03-26  Kevin Buettner  <kevinb@redhat.com>
 
 	* symtab.c (find_pc_sect_line): Revise method used for finding

gdb/proc-api.c

@@ -446,12 +446,12 @@ write_with_trace (int fd, void *varg, size_t len, char *file, int line)
 {
   int  i;
   int ret;
-  long *arg = (long *) varg;
+  procfs_ctl_t *arg = (procfs_ctl_t *) varg;
 
   prepare_to_trace ();
   if (procfs_trace)
     {
-      long opcode = arg[0];
+      procfs_ctl_t opcode = arg[0];
       for (i = 0; rw_table[i].name != NULL; i++)
 	if (rw_table[i].value == opcode)
 	  break;
@@ -475,7 +475,9 @@ write_with_trace (int fd, void *varg, size_t len, char *file, int line)
       case PCUNSET:
 #endif
 #ifdef PCRESET
+#if PCRESET != PCUNSET
       case PCRESET:
+#endif
 #endif
 	fprintf (procfs_file ? procfs_file : stdout, 
 		 "write (PCRESET, %s) %s\n", 
@@ -551,6 +553,7 @@ write_with_trace (int fd, void *varg, size_t len, char *file, int line)
 	break;
       default:
 	{
+#ifdef BREAKPOINT
 	  static unsigned char break_insn[] = BREAKPOINT;
 
 	  if (len == sizeof (break_insn) &&
@@ -558,7 +561,9 @@ write_with_trace (int fd, void *varg, size_t len, char *file, int line)
 	    fprintf (procfs_file ? procfs_file : stdout, 
 		     "write (<breakpoint at 0x%08lx>) \n", 
 		     (unsigned long) lseek_offset);
-	  else if (rw_table[i].name)
+	  else 
+#endif
+	  if (rw_table[i].name)
 	    fprintf (procfs_file ? procfs_file : stdout, 
 		     "write (%s) %s\n", 
 		     rw_table[i].name, 

gdb/proc-events.c

@@ -40,8 +40,12 @@ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 #include <stdio.h>
 #include <sys/types.h>
 #include <sys/procfs.h>
+#ifdef HAVE_SYS_SYSCALL_H
 #include <sys/syscall.h>
+#endif
+#ifdef HAVE_SYS_FAULT_H
 #include <sys/fault.h>
+#endif
 
 /*  Much of the information used in the /proc interface, particularly for
     printing status information, is kept as tables of structures of the

gdb/proc-utils.h

@@ -92,3 +92,11 @@ extern  void  procfs_note      (char *, char *, int);
 #define PROCFS_NOTE(X) procfs_note      (X,       __FILE__, __LINE__)
 #define PROC_PRETTYFPRINT_STATUS(X,Y,Z,T) \
      proc_prettyfprint_status (X, Y, Z, T)
+
+/* Define the type (and more importantly the width) of the control
+   word used to write to the /proc/PID/ctl file. */
+#if defined (PROC_CTL_WORD_TYPE)
+typedef PROC_CTL_WORD_TYPE procfs_ctl_t;
+#else
+typedef long procfs_ctl_t;
+#endif