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#ifdef __GNUC__
/* have assembler macros */
#define add_carry(x,y,h) \
({ ulong __res,__x =(x),__y=(y); \
asm volatile( \
"addcc %2,%3,%0
\taddx %1,%%g0,%1"\
: "=r" (__res),"=r" (h) \
: "r" (__x) , "rn" (__y),"1" (h) ); \
__res;})
/* SET_MACHINE_CARRY Set the machine carry flag
if overflow = 1 otherwise clear it.
*/
#define SET_MACHINE_CARRY(overflow) \
asm volatile("subcc %%g0,%0,%%g0" \
: :"r" (overflow))
/* SET_OVERFLOW Set the overflow = the current carry code
Note that machine loads and mov's should not affect
the carry code.
*/
#define SET_OVERFLOW \
asm volatile("addx %%g0,%%g0,%0" \
: "=r" (overflow))
#define ADDXCC(u,v) \
({ulong res; asm("addxcc %1,%2,%0" \
: "=r" (res): \
"r" (u),"r" (v)); res;})
#define SUBXCC(u,v) \
({ulong res; asm("subxcc %1,%2,%0" \
: "=r" (res): \
"r" (u),"r" (v)); res;})
/* get a copy of mulul3 included for when inlining not there */
#define NEED_MULUL3
#define mulul(a,b,__hi) \
({unsigned long __x=(a),__y=(b); \
asm("
or %0,%3,%%o4
mov %0,%%y
andncc %%o4,0xfff,%%g0
be 2f
andcc %%g0,%%g0,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%%g0,%%o4
tst %3
bl,a 1f
add %%o4,%0,%%o4
1: mov %%o4,%1
b 3f
rd %%y,%0
2: clr %1
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%3,%%o4
mulscc %%o4,%%g0,%%o4
rd %%y,%%o5
sll %%o4,12,%%o4
srl %%o5,20,%%o5
or %%o5,%%o4,%0
3:
" \
: "=r" (__x),"=&r" (__hi): \
"0" (__x),"r" (__y): \
"%o4","%o5"); __x;}) /* "y" should be hear in that it is munged */
/* the above '=&r' indicates that the register for _hi may NOT be the
same reg as used by __y.*/
#else /* no __GNUC__ */
#endif
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.