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Add a utility hexdump() call we can use when we need it.

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This is mostly for debugging, so it's not a real problem if it's not
used right now.  I just like having it handy.

Signed-off-by: Peter Jones <pjones@redhat.com>
This commit is contained in:
Peter Jones 2015-11-17 11:39:28 -05:00
parent 0470d800d5
commit db90de78c0
1 changed files with 104 additions and 0 deletions
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hexdump.h Normal file
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#ifndef STATIC_HEXDUMP_H
#define STATIC_HEXDUMP_H
static int
__attribute__((__unused__))
isprint(char c)
{
if (c < 0x20)
return 0;
if (c > 0x7e)
return 0;
return 1;
}
static UINTN
__attribute__((__unused__))
format_hex(UINT8 *data, UINTN size, CHAR16 *buf)
{
UINTN sz = (UINTN)data % 16;
CHAR16 hexchars[] = L"0123456789abcdef";
int offset = 0;
UINTN i;
UINTN j;
for (i = 0; i < sz; i++) {
buf[offset++] = L' ';
buf[offset++] = L' ';
buf[offset++] = L' ';
if (i == 7)
buf[offset++] = L' ';
}
for (j = sz; j < 16 && j < size; j++) {
UINT8 d = data[j-sz];
buf[offset++] = hexchars[(d & 0xf0) >> 4];
buf[offset++] = hexchars[(d & 0x0f)];
if (j != 15)
buf[offset++] = L' ';
if (j == 7)
buf[offset++] = L' ';
}
for (i = j; i < 16; i++) {
buf[offset++] = L' ';
buf[offset++] = L' ';
if (i != 15)
buf[offset++] = L' ';
if (i == 7)
buf[offset++] = L' ';
}
buf[offset] = L'\0';
return j - sz;
}
static void
__attribute__((__unused__))
format_text(UINT8 *data, UINTN size, CHAR16 *buf)
{
UINTN sz = (UINTN)data % 16;
int offset = 0;
UINTN i;
UINTN j;
for (i = 0; i < sz; i++)
buf[offset++] = L' ';
buf[offset++] = L'|';
for (j = sz; j < 16 && j < size; j++) {
if (isprint(data[j-sz]))
buf[offset++] = data[j-sz];
else
buf[offset++] = L'.';
}
buf[offset++] = L'|';
for (i = j; i < 16; i++)
buf[offset++] = L' ';
buf[offset] = L'\0';
}
static void
__attribute__((__unused__))
hexdump(UINT8 *data, UINTN size)
{
UINTN display_offset = (UINTN)data & 0xffffffff;
UINTN offset = 0;
//Print(L"hexdump: data=0x%016x size=0x%x\n", data, size);
while (offset < size) {
CHAR16 hexbuf[49];
CHAR16 txtbuf[19];
UINTN sz;
sz = format_hex(data+offset, size-offset, hexbuf);
if (sz == 0)
return;
uefi_call_wrapper(BS->Stall, 1, 200000);
format_text(data+offset, size-offset, txtbuf);
Print(L"%08x %s %s\n", display_offset, hexbuf, txtbuf);
uefi_call_wrapper(BS->Stall, 1, 200000);
display_offset += sz;
offset += sz;
}
}
#endif