Changeset f02ffca in rtems

Timestamp:

02/06/98 13:47:09 (25 years ago)

Author:

Joel Sherrill <joel.sherrill@…>

Branches:

4.10, 4.11, 4.8, 4.9, 5, master

Children:

5599d6e

Parents:

02d19d8

Message:

Problem report from Brian Cuthie regarding incorrect calculation
of BSS size. The conversion from a count of u8's to a count of
u32's was shifting in the wrong direction. This error had been in
the start code a long time. It had not caused problems because
the BSS is typically much smaller than the C heap which typically
follows it in memory. Plus since this code was executed at start
time, all that really happened was an extra zeroing of some memory.

File:

• c/src/lib/libbsp/i386/pc386/start/start.s (modified) (1 diff)

c/src/lib/libbsp/i386/pc386/start/start.s

@@ -166 +166 @@
         movl    $ SYM (_bss_start), edi # edi = beginning of .bss
         subl    edi, ecx                # ecx = size of .bss in bytes
-        shll    ecx                     # size of .bss in longs
+        shrl    ecx                     # size of .bss in longs
+        shrl    ecx
         xorl    eax, eax                # value to clear out memory
         repne                           # while ecx != 0