[parisc-linux-cvs] comment fixes for entry.S

[Richard Hirst]

+++ entry.S     2001/04/03 12:15:13
@@ -608,14 +608,20 @@
        copy    %r26, %r28
 
        /*
-        * Common rfi return path for interruptions, kernel execve, and some
-        * syscalls.  The sys_rt_sigreturn syscall will return via this path
-        * if the signal was received when the process was running; if the
-        * process was blocked on a syscall then the normal syscall_exit
-        * path is used.  All syscalls for traced proceses exit via
-        * intr_restore.
-        * Note that the following code uses a "relied upon translation". See
-        * the parisc ACD for details. The ssm is necessary due to a PCXT bug.
+        * Common rfi return path for interruptions, kernel execve, and
+        * sys_rt_sigreturn (sometimes).  The sys_rt_sigreturn syscall will
+        * return via this path if the signal was received when the process
+        * was running; if the process was blocked on a syscall then the
+        * normal syscall_exit path is used.  All syscalls for traced
+        * proceses exit via intr_restore.
+        *
+        * XXX If any syscalls that change a processes space id ever exit
+        * this way, then we will need to copy %sr3 in to PT_SR[3..7], and
+        * adjust IASQ[0..1].
+        *
+        * Note that the following code uses a "relied upon translation".
+        * See the parisc ACD for details. The ssm is necessary due to a
+        * PCXT bug.
         */
 
        .align 4096
@@ -635,7 +641,7 @@
        LDREG   PT_IAOQ1(%r16),%r19
        depi    3,31,2,%r19
        STREG   %r19,PT_IAOQ1(%r16)
-
+
 intr_return:
 
        /* Check for software interrupts */
@@ -2003,8 +2009,7 @@
           values. */
        /* NOTE: Not all syscalls exit this way.  rt_sigreturn will exit
         * via syscall_exit_rfi if the signal was received while the process
-        * was running.  All traced processes will probably exit via
-        * syscall_exit_rfi in the future.
+        * was running.
         */
 
        /* save return value now */