diff options
| -rw-r--r-- | sys/i386/i386/math_emulate.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/i386/i386/math_emulate.c b/sys/i386/i386/math_emulate.c index 743442b644ac..0e80743d1feb 100644 --- a/sys/i386/i386/math_emulate.c +++ b/sys/i386/i386/math_emulate.c @@ -6,7 +6,7 @@ * [expediant "port" of linux 8087 emulator to 386BSD, with apologies -wfj] * * from: 386BSD 0.1 - * $Id: math_emulate.c,v 1.28 1998/10/16 03:54:59 peter Exp $ + * $Id: math_emulate.c,v 1.29 1998/10/18 07:40:29 peter Exp $ */ /* @@ -117,7 +117,10 @@ math_emulate(struct trapframe * info) (u_long)oldeip); panic("?Math emulation needed in kernel?"); } - code = get_fs_word((unsigned short *) oldeip); + /* completely ignore an operand-size prefix */ + if (get_fs_byte((char *) info->tf_eip) == 0x66) + info->tf_eip++; + code = get_fs_word((unsigned short *) info->tf_eip); bswapw(code); code &= 0x7ff; I387.fip = oldeip; |