diff options
Diffstat (limited to 'usr/src/lib/libdisasm/common/dis_sparc_fmt.c')
| -rw-r--r-- | usr/src/lib/libdisasm/common/dis_sparc_fmt.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/usr/src/lib/libdisasm/common/dis_sparc_fmt.c b/usr/src/lib/libdisasm/common/dis_sparc_fmt.c index 017c056477..ceaafa47fe 100644 --- a/usr/src/lib/libdisasm/common/dis_sparc_fmt.c +++ b/usr/src/lib/libdisasm/common/dis_sparc_fmt.c @@ -32,6 +32,7 @@ #include <sys/byteorder.h> +#include <sys/debug.h> #include <stdarg.h> #if !defined(DIS_STANDALONE) @@ -647,7 +648,7 @@ static const char *prefetch_str[32] = { static void prt_field(const char *, uint32_t, int); static const char *get_regname(dis_handle_t *, int, uint32_t); -static int32_t sign_extend(int32_t, int32_t); +static int32_t sign_extend(int32_t, uint32_t); static void prt_name(dis_handle_t *, const char *, int); @@ -2203,12 +2204,13 @@ prt_field(const char *field, uint32_t val, int len) * integer */ static int32_t -sign_extend(int32_t val, int32_t bits) +sign_extend(int32_t val, uint32_t bits) { - if ((val & (1L << (bits - 1))) == 0) - return (val); + uint32_t mask; - return ((-1L << bits) | val); + ASSERT(bits > 0); + mask = 1L << (bits - 1); /* 2**(bits - 1) */ + return (-(val & mask) + (val & ~mask)); } /* |