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authorStefan Weil <sw@weilnetz.de>2012-03-04 08:21:39 +0100
committerAurelien Jarno <aurelien@aurel32.net>2012-08-24 01:03:26 +0200
commit6fc97fafce05eee76479ca6d289241772d21b370 (patch)
treeff4f10570d6af12dd06dc73f6ecf5d8d08e562a5
parent94159135cb59684853dcd45ff70d6dbc54a29209 (diff)
downloadqemu-arm-6fc97fafce05eee76479ca6d289241772d21b370.tar.gz
target-mips: Fix some helper functions (VR54xx multiplication)
Commits b5dc7732e1cc2fb549e48b7b5d664f2c79628e2e and be24bb4f3007c3e07cbf1934f7e781493d876ab7 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>
-rw-r--r--target-mips/op_helper.c75
1 files changed, 29 insertions, 46 deletions
diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c
index 66037acec5..e5bc93e226 100644
--- a/target-mips/op_helper.c
+++ b/target-mips/op_helper.c
@@ -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