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/* Definitions for AT&T assembler syntax for the Intel 80386.
Copyright (C) 1993 Free Software Foundation, Inc.
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Defines to be able to build libgcc.a with GCC. */
/* It might seem that these are not important, since gcc 2 will never
call libgcc for these functions. But programs might be linked with
code compiled by gcc 1, and then these will be used. */
/* The arg names used to be a and b, but `a' appears inside strings
and that confuses non-ANSI cpp. */
#define perform_udivsi3(arg0,arg1) \
{ \
register int dx asm("dx"); \
register int ax asm("ax"); \
\
dx = 0; \
ax = arg0; \
asm ("divl %3" : "=a" (ax), "=d" (dx) : "a" (ax), "g" (arg1), "d" (dx)); \
return ax; \
}
#define perform_divsi3(arg0,arg1) \
{ \
register int dx asm("dx"); \
register int ax asm("ax"); \
register int cx asm("cx"); \
\
ax = arg0; \
cx = arg1; \
asm ("cltd\n\tidivl %3" : "=a" (ax), "=&d" (dx) : "a" (ax), "c" (cx)); \
return ax; \
}
#define perform_umodsi3(arg0,arg1) \
{ \
register int dx asm("dx"); \
register int ax asm("ax"); \
\
dx = 0; \
ax = arg0; \
asm ("divl %3" : "=a" (ax), "=d" (dx) : "a" (ax), "g" (arg1), "d" (dx)); \
return dx; \
}
#define perform_modsi3(arg0,arg1) \
{ \
register int dx asm("dx"); \
register int ax asm("ax"); \
register int cx asm("cx"); \
\
ax = arg0; \
cx = arg1; \
asm ("cltd\n\tidivl %3" : "=a" (ax), "=&d" (dx) : "a" (ax), "c" (cx)); \
return dx; \
}
#define perform_fixdfsi(arg0) \
{ \
auto unsigned short ostatus; \
auto unsigned short nstatus; \
auto int ret; \
auto double tmp; \
\
&ostatus; /* guarantee these land in memory */ \
&nstatus; \
&ret; \
&tmp; \
\
asm volatile ("fnstcw %0" : "=m" (ostatus)); \
nstatus = ostatus | 0x0c00; \
asm volatile ("fldcw %0" : /* no outputs */ : "m" (nstatus)); \
tmp = arg0; \
asm volatile ("fldl %0" : /* no outputs */ : "m" (tmp)); \
asm volatile ("fistpl %0" : "=m" (ret)); \
asm volatile ("fldcw %0" : /* no outputs */ : "m" (ostatus)); \
\
return ret; \
}
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