23 Jul, 2013
1 commit
-
Signed-off-by: Dirk Eibach
Cc: Heiko Schocher
Cc: Stefan Roese
Tested-by: Stefan Roese
05 Jul, 2010
1 commit
-
The hush shell dynamically allocates (and re-allocates) memory for the
argument strings in the "char *argv[]" argument vector passed to
commands. Any code that modifies these pointers will cause serious
corruption of the malloc data structures and crash U-Boot, so make
sure the compiler can check that no such modifications are being done
by changing the code into "char * const argv[]".This modification is the result of debugging a strange crash caused
after adding a new command, which used the following argument
processing code which has been working perfectly fine in all Unix
systems since version 6 - but not so in U-Boot:int main (int argc, char **argv)
{
while (--argc > 0 && **++argv == '-') {
/* ====> */ while (*++*argv) {
switch (**argv) {
case 'd':
debug++;
break;
...
default:
usage ();
}
}
}
...
}The line marked "====>" will corrupt the malloc data structures and
usually cause U-Boot to crash when the next command gets executed by
the shell. With the modification, the compiler will prevent this with
an
error: increment of read-only location '*argv'N.B.: The code above can be trivially rewritten like this:
while (--argc > 0 && **++argv == '-') {
char *arg = *argv;
while (*++arg) {
switch (*arg) {
...Signed-off-by: Wolfgang Denk
Acked-by: Mike Frysinger
22 Apr, 2010
1 commit
-
As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.Signed-off-by: Stefan Roese
Acked-by: Wolfgang Denk
Acked-by: Detlev Zundel
Acked-by: Kim Phillips
Cc: Peter Tyser
Cc: Anatolij Gustschin
