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target-mips: Fix some helper functions (VR54xx multiplication) 

Commits b5dc7732e1 and
be24bb4f30 optimized the code
and removed the correct setting of t0. Fix this.

gcc-4.7 detected this bug because parameter arg1 was unused
but set in set_HIT0_LO and set_HI_LOT0.

Cc: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
master
Stefan Weil 2012-03-04 08:21:39 +01:00 committed by Aurelien Jarno
parent 94159135cb
commit 6fc97fafce
1 changed files with 29 additions and 46 deletions
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75
target-mips/op_helper.c
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@ -192,115 +192,98 @@ static inline uint64_t get_HILO (void)
return ((uint64_t)(env->active_tc.HI[0]) << 32) | (uint32_t)env->active_tc.LO[0];
}
static inline void set_HIT0_LO (target_ulong arg1, uint64_t HILO)
static inline target_ulong set_HIT0_LO(uint64_t HILO)
{
target_ulong tmp;
env->active_tc.LO[0] = (int32_t)(HILO & 0xFFFFFFFF);
arg1 = env->active_tc.HI[0] = (int32_t)(HILO >> 32);
tmp = env->active_tc.HI[0] = (int32_t)(HILO >> 32);
return tmp;
}
static inline void set_HI_LOT0 (target_ulong arg1, uint64_t HILO)
static inline target_ulong set_HI_LOT0(uint64_t HILO)
{
arg1 = env->active_tc.LO[0] = (int32_t)(HILO & 0xFFFFFFFF);
target_ulong tmp = env->active_tc.LO[0] = (int32_t)(HILO & 0xFFFFFFFF);
env->active_tc.HI[0] = (int32_t)(HILO >> 32);
return tmp;
}
/* Multiplication variants of the vr54xx. */
target_ulong helper_muls (target_ulong arg1, target_ulong arg2)
{
set_HI_LOT0(arg1, 0 - ((int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2));
return arg1;
return set_HI_LOT0(0 - ((int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2));
}
target_ulong helper_mulsu (target_ulong arg1, target_ulong arg2)
{
set_HI_LOT0(arg1, 0 - ((uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2));
return arg1;
return set_HI_LOT0(0 - (uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2);
}
target_ulong helper_macc (target_ulong arg1, target_ulong arg2)
{
set_HI_LOT0(arg1, ((int64_t)get_HILO()) + ((int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2));
return arg1;
return set_HI_LOT0((int64_t)get_HILO() + (int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2);
}
target_ulong helper_macchi (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, ((int64_t)get_HILO()) + ((int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2));
return arg1;
return set_HIT0_LO((int64_t)get_HILO() + (int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2);
}
target_ulong helper_maccu (target_ulong arg1, target_ulong arg2)
{
set_HI_LOT0(arg1, ((uint64_t)get_HILO()) + ((uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2));
return arg1;
return set_HI_LOT0((uint64_t)get_HILO() + (uint64_t)(uint32_t)arg1 *
(uint64_t)(uint32_t)arg2);
}
target_ulong helper_macchiu (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, ((uint64_t)get_HILO()) + ((uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2));
return arg1;
return set_HIT0_LO((uint64_t)get_HILO() + (uint64_t)(uint32_t)arg1 *
(uint64_t)(uint32_t)arg2);
}
target_ulong helper_msac (target_ulong arg1, target_ulong arg2)
{
set_HI_LOT0(arg1, ((int64_t)get_HILO()) - ((int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2));
return arg1;
return set_HI_LOT0((int64_t)get_HILO() - (int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2);
}
target_ulong helper_msachi (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, ((int64_t)get_HILO()) - ((int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2));
return arg1;
return set_HIT0_LO((int64_t)get_HILO() - (int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2);
}
target_ulong helper_msacu (target_ulong arg1, target_ulong arg2)
{
set_HI_LOT0(arg1, ((uint64_t)get_HILO()) - ((uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2));
return arg1;
return set_HI_LOT0((uint64_t)get_HILO() - (uint64_t)(uint32_t)arg1 *
(uint64_t)(uint32_t)arg2);
}
target_ulong helper_msachiu (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, ((uint64_t)get_HILO()) - ((uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2));
return arg1;
return set_HIT0_LO((uint64_t)get_HILO() - (uint64_t)(uint32_t)arg1 *
(uint64_t)(uint32_t)arg2);
}
target_ulong helper_mulhi (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, (int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2);
return arg1;
return set_HIT0_LO((int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2);
}
target_ulong helper_mulhiu (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, (uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2);
return arg1;
return set_HIT0_LO((uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2);
}
target_ulong helper_mulshi (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, 0 - ((int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2));
return arg1;
return set_HIT0_LO(0 - (int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2);
}
target_ulong helper_mulshiu (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, 0 - ((uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2));
return arg1;
return set_HIT0_LO(0 - (uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2);
}
#ifdef TARGET_MIPS64