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SVF: fix checking bit pattern against length 

The code works like follow (N = bit_len):

	N	-1	%4	2<<	-1	~ (binary)
	--------------------------------------------------
	1	0	0	2	1	1111 1110
	2	1	1	4	3	1111 1100
	3	2	2	8	7	1111 1000
	4	3	3	16	15	1111 0000
	5	4	0	2	1	1111 1110
	6	5	1	4	3	1111 1100
	7	6	2	8	7	1111 1000
	8	7	3	16	15	1111 0000
	...	...	...	...	...	...

Addresses a bug reported by FangfangLi <ffli@syntest.com.cn>.

[dbrownell@users.sourceforge.net: fix spelling bug too]

Signed-off-by: Michael Roth <mroth@nessie.de>
Cc: FangfangLi <ffli@syntest.com.cn>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
__archive__
Michael Roth 2009-10-29 14:24:28 +01:00 committed by David Brownell
parent 517049dca5
commit a53c72cdab
1 changed files with 2 additions and 2 deletions
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4
src/svf/svf.c
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@ -685,9 +685,9 @@ static int svf_copy_hexstring_to_binary(char *str, uint8_t **bin, int orig_bit_l
str_len--; str_len--;
// check valid // check valid
if (str_len > 0 || (ch & ~((1 << (4 - (bit_len % 4))) - 1)) != 0) if (str_len > 0 || (ch & ~((2 << ((bit_len - 1) % 4)) - 1)) != 0)
{ {
LOG_ERROR("value execede length"); LOG_ERROR("value execeeds length");
return ERROR_FAIL; return ERROR_FAIL;
} }