motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 15:53:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

target-i386: Use mulu2 and muls2

Browse source 
These correspond very closely to the insns that we're emulating.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Richard Henderson 2013-02-26 12:06:23 -08:00 • committed by Blue Swirl
parent ee24aaf356
commit a4bcea3d67
3 changed files with 56 additions and 155 deletions
Download patch file Download diff file Expand all files Collapse all files

40
target-i386/int_helper.c
View file

@ -374,46 +374,6 @@ static int idiv64(uint64_t *plow, uint64_t *phigh, int64_t b)
return 0;
}
void helper_mulq_EAX_T0(CPUX86State *env, target_ulong t0)
{
uint64_t r0, r1;
mulu64(&r0, &r1, EAX, t0);
EAX = r0;
EDX = r1;
CC_DST = r0;
CC_SRC = r1;
}
target_ulong helper_umulh(target_ulong t0, target_ulong t1)
{
uint64_t h, l;
mulu64(&l, &h, t0, t1);
return h;
}
void helper_imulq_EAX_T0(CPUX86State *env, target_ulong t0)
{
uint64_t r0, r1;
muls64(&r0, &r1, EAX, t0);
EAX = r0;
EDX = r1;
CC_DST = r0;
CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
}
target_ulong helper_imulq_T0_T1(CPUX86State *env, target_ulong t0,
target_ulong t1)
{
uint64_t r0, r1;
muls64(&r0, &r1, t0, t1);
CC_DST = r0;
CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
return r0;
}
void helper_divq_EAX(CPUX86State *env, target_ulong t0)
{
uint64_t r0, r1;