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PR 2021 - mdump address problem with volatile

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This commit is contained in:
Ric Claus
2012-02-17 13:29:58 -08:00
committed by Joel Sherrill
parent 16a86162a2
commit 4648adea97
1 changed files with 16 additions and 9 deletions
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25
cpukit/libmisc/shell/main_mdump.c
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@@ -31,6 +31,7 @@ static int args_parse(int argc, char* argv[], void** addr, int* max, int* sz);
static void mdumpB(void* addr, int m);
static void mdumpW(void* addr, int m);
static void mdumpL(void* addr, int m);
static void mdumpC(void* addr, int m);
int rtems_mdump(void* addr, int max, int sz);
@@ -43,7 +44,7 @@ int rtems_shell_main_mdump(
int max;
int sz;
if (args_parse(argc, argv, &addr, &max, &sz))
if (args_parse(argc, argv, &addr, &max, &sz))
return -1;
return rtems_mdump(addr, max, sz);
}
@@ -114,11 +115,10 @@ int args_parse(int argc,
int rtems_mdump(void* addr, int max, int sz)
{
unsigned char n;
unsigned char m;
volatile unsigned char *pb;
int res;
int cnt;
unsigned char m;
unsigned char *pb;
int res;
int cnt;
if (!((sz == 1) || (sz == 2) || (sz == 4))) {
printf( "Size argument (%d) is not one of 1 (bytes), "
@@ -147,9 +147,7 @@ int rtems_mdump(void* addr, int max, int sz)
if (sz == 1) mdumpB(pb, cnt);
else if (sz == 2) mdumpW(pb, cnt);
else if (sz == 4) mdumpL(pb, cnt);
for (n=0;n<=cnt;n++) {
printf("%c", isprint(pb[n]) ? pb[n] : '.');
}
mdumpC(pb, cnt);
printf("\n");
pb += 16;
}
@@ -191,6 +189,15 @@ void mdumpL(void* addr, int m)
}
void mdumpC(void* addr, int m)
{
volatile unsigned char* pb = addr;
int n;
for (n=0;n<=m;n++)
printf("%c", isprint(pb[n]) ? pb[n] : '.');
}
rtems_shell_cmd_t rtems_shell_MDUMP_Command = {
"mdump", /* name */
"mdump [address [length [size]]]", /* usage */