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Get things limping along again for the 80386 and friends. The

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ELF assembler emits a redundant operand-size prefix for the
fnstsw %ax instruction, and this stops the show for 3.0-RELEASE.
This commit is contained in:
Robert Nordier 1998-10-21 17:10:49 +00:00
parent 2c2a0cf191
commit cfe10d7fc6
1 changed files with 5 additions and 2 deletions
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7
sys/i386/i386/math_emulate.c
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@ -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;