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| author | Franklin Wei <me@fwei.tk> | 2017-07-27 00:00:51 -0400 |
|---|---|---|
| committer | Franklin Wei <me@fwei.tk> | 2017-07-27 00:03:09 -0400 |
| commit | 5a5bd0d6d1e77b1d94c18e3d4ce1a52b05dc2967 (patch) | |
| tree | 4da596c5a693e3043e3bcf6eabd1bcc1b4cf3236 | |
| parent | 56dd2eaaf2ccee6f682d30e29b3b6babe1dc49ef (diff) | |
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Fix arm memset() handling of negative arguments
This fixes the sgt-mines plugin. Same issue was present in an old
glibc as well:
https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=a7ed1adbecb6aac49af75aae3b3498798cf63abc
| -rw-r--r-- | firmware/asm/arm/memset.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/firmware/asm/arm/memset.S b/firmware/asm/arm/memset.S index 682da87..64cd95c 100644 --- a/firmware/asm/arm/memset.S +++ b/firmware/asm/arm/memset.S @@ -50,6 +50,7 @@ memset: /* * we know that the pointer in r0 is aligned to a word boundary. */ + and r1, r1, #255 @ clear sign bits orr r1, r1, r1, lsl #8 orr r1, r1, r1, lsl #16 mov r3, r1 |