* procfs.c (child_resume): Work around Solaris (on Sparc) lossage

where there is no place for nPC in prrun struct.

2 files changed, 16 insertions, 1 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 5cf89e9..3b9aaae 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+Thu Jun 25 15:18:42 1992  Stu Grossman  (grossman at cygnus.com)
+
+	* procfs.c (child_resume):  Work around Solaris (on Sparc) lossage
+	where there is no place for nPC in prrun struct.
+
 Thu Jun 25 12:06:00 1992  Fred Fish  (fnf@cygnus.com)
 
 	* mipsread.c:  Pass NULL name pointer to init_type, not 0.
diff --git a/gdb/procfs.c b/gdb/procfs.c
index 251ddb4..b205c66 100644
--- a/gdb/procfs.c
+++ b/gdb/procfs.c
@@ -2039,8 +2039,18 @@ child_resume (step, signo)
      int signo;
 {
   errno = 0;
-  pi.prrun.pr_flags = PRSVADDR | PRSTRACE | PRSFAULT | PRCFAULT;
+  pi.prrun.pr_flags = PRSTRACE | PRSFAULT | PRCFAULT;
+
+#if !defined(sun) && !defined(sparc)
+/* Can't do this under Solaris running on a Sparc, as there seems to be no
+   place to put nPC.  In fact, if you use this, nPC seems to be set to some
+   random garbage.  We have to rely on the fact that PC and nPC have been
+   written previously via PIOCSREG during a register flush. */
+
   pi.prrun.pr_vaddr = (caddr_t) *(int *) &registers[REGISTER_BYTE (PC_REGNUM)];
+  pi.prrun.pr_flags != PRSVADDR;
+#endif
+
   if (signo && !(signo == SIGSTOP && pi.nopass_next_sigstop))
     {
       set_proc_siginfo (&pi, signo);