Author: kaiw
Date: Sun Jun 30 21:06:47 2013
New Revision: 252430
URL: http://svnweb.freebsd.org/changeset/base/252430
Log:
When decoding SLEB128, make sure sign extension is performed for
64-bit integers.
MFC after: 3 days
Modified:
head/lib/libdwarf/dwarf_init.c
head/lib/libdwarf/dwarf_loc.c
Modified: head/lib/libdwarf/dwarf_init.c
==============================================================================
--- head/lib/libdwarf/dwarf_init.c Sun Jun 30 20:51:15 2013
(r252429)
+++ head/lib/libdwarf/dwarf_init.c Sun Jun 30 21:06:47 2013
(r252430)
@@ -192,7 +192,7 @@ dwarf_read_sleb128(Elf_Data **dp, uint64
shift += 7;
} while ((b & 0x80) != 0);
- if (shift < 32 && (b & 0x40) != 0)
+ if (shift < 64 && (b & 0x40) != 0)
ret |= (-1 << shift);
return ret;
Modified: head/lib/libdwarf/dwarf_loc.c
==============================================================================
--- head/lib/libdwarf/dwarf_loc.c Sun Jun 30 20:51:15 2013
(r252429)
+++ head/lib/libdwarf/dwarf_loc.c Sun Jun 30 21:06:47 2013
(r252430)
@@ -46,7 +46,7 @@ dwarf_decode_sleb128(uint8_t **dp)
shift += 7;
} while ((b & 0x80) != 0);
- if (shift < 32 && (b & 0x40) != 0)
+ if (shift < 64 && (b & 0x40) != 0)
ret |= (-1 << shift);
*dp = src;
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