Fix usage of the -1 constant in the PowerPC target code:

fix invalid size casts and/or sign-extensions.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3626 c046a42c-6fe2-441c-8c8c-71466251a162

4 files changed, 54 insertions, 51 deletions

diff --git a/target-ppc/helper.c b/target-ppc/helper.c
index f7df19e..4937a75 100644
--- a/target-ppc/helper.c
+++ b/target-ppc/helper.c
@@ -199,7 +199,7 @@ static always_inline int _pte_check (mmu_ctx_t *ctx, int is_64b,
             pp = pte1 & 0x00000003;
         }
         if (ptem == ctx->ptem) {
-            if (ctx->raddr != (target_ulong)-1) {
+            if (ctx->raddr != (target_phys_addr_t)-1ULL) {
                 /* all matches should have equal RPN, WIMG & PP */
                 if ((ctx->raddr & mmask) != (pte1 & mmask)) {
                     if (loglevel != 0)
@@ -900,7 +900,7 @@ static always_inline target_phys_addr_t get_pgaddr (target_phys_addr_t sdr1,
                                                     target_phys_addr_t hash,
                                                     target_phys_addr_t mask)
 {
-    return (sdr1 & ((target_ulong)(-1ULL) << sdr_sh)) | (hash & mask);
+    return (sdr1 & ((target_phys_addr_t)(-1ULL) << sdr_sh)) | (hash & mask);
 }
 
 static always_inline int get_segment (CPUState *env, mmu_ctx_t *ctx,
@@ -1011,7 +1011,7 @@ static always_inline int get_segment (CPUState *env, mmu_ctx_t *ctx,
                 ctx->ptem = (vsid << 7) | (pgidx >> 10);
             }
             /* Initialize real address with an invalid value */
-            ctx->raddr = (target_ulong)-1;
+            ctx->raddr = (target_phys_addr_t)-1ULL;
             if (unlikely(env->mmu_model == POWERPC_MMU_SOFT_6xx ||
                          env->mmu_model == POWERPC_MMU_SOFT_74xx)) {
                 /* Software TLB search */
@@ -1223,7 +1223,7 @@ int mmu40x_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
     int i, ret, zsel, zpr, pr;
 
     ret = -1;
-    raddr = -1;
+    raddr = (target_phys_addr_t)-1ULL;
     pr = msr_pr;
     for (i = 0; i < env->nb_tlb; i++) {
         tlb = &env->tlb[i].tlbe;
@@ -1306,7 +1306,7 @@ int mmubooke_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
     int i, prot, ret;
 
     ret = -1;
-    raddr = -1;
+    raddr = (target_phys_addr_t)-1ULL;
     for (i = 0; i < env->nb_tlb; i++) {
         tlb = &env->tlb[i].tlbe;
         if (ppcemb_tlb_check(env, tlb, &raddr, address,
@@ -1975,7 +1975,7 @@ void ppc_tlb_invalidate_one (CPUPPCState *env, target_ulong addr)
     case POWERPC_MMU_32B:
     case POWERPC_MMU_601:
         /* tlbie invalidate TLBs for all segments */
-        addr &= ~((target_ulong)-1 << 28);
+        addr &= ~((target_ulong)-1ULL << 28);
         /* XXX: this case should be optimized,
          * giving a mask to tlb_flush_page
          */
@@ -2730,7 +2730,7 @@ static always_inline void powerpc_excp (CPUState *env,
         new_msr &= ~((target_ulong)1 << MSR_LE);
     /* Jump to handler */
     vector = env->excp_vectors[excp];
-    if (vector == (target_ulong)-1) {
+    if (vector == (target_ulong)-1ULL) {
         cpu_abort(env, "Raised an exception without defined vector %d\n",
                   excp);
     }
@@ -2961,7 +2961,7 @@ void cpu_ppc_reset (void *opaque)
 #endif
     env->msr = msr;
     hreg_compute_hflags(env);
-    env->reserve = -1;
+    env->reserve = (target_ulong)-1ULL;
     /* Be sure no exception or interrupt is pending */
     env->pending_interrupts = 0;
     env->exception_index = POWERPC_EXCP_NONE;
diff --git a/target-ppc/op.c b/target-ppc/op.c
index 81c426c..621b975 100644
--- a/target-ppc/op.c
+++ b/target-ppc/op.c
@@ -959,9 +959,9 @@ void OPPROTO op_add_ze (void)
 /* divide word */
 void OPPROTO op_divw (void)
 {
-    if (unlikely(((int32_t)T0 == INT32_MIN && (int32_t)T1 == -1) ||
+    if (unlikely(((int32_t)T0 == INT32_MIN && (int32_t)T1 == (int32_t)-1) ||
                  (int32_t)T1 == 0)) {
-        T0 = (int32_t)((-1) * ((uint32_t)T0 >> 31));
+        T0 = (int32_t)(UINT32_MAX * ((uint32_t)T0 >> 31));
     } else {
         T0 = (int32_t)T0 / (int32_t)T1;
     }
@@ -971,9 +971,9 @@ void OPPROTO op_divw (void)
 #if defined(TARGET_PPC64)
 void OPPROTO op_divd (void)
 {
-    if (unlikely(((int64_t)T0 == INT64_MIN && (int64_t)T1 == -1) ||
+    if (unlikely(((int64_t)T0 == INT64_MIN && (int64_t)T1 == (int64_t)-1LL) ||
                  (int64_t)T1 == 0)) {
-        T0 = (int64_t)((-1ULL) * ((uint64_t)T0 >> 63));
+        T0 = (int64_t)(UINT64_MAX * ((uint64_t)T0 >> 63));
     } else {
         T0 = (int64_t)T0 / (int64_t)T1;
     }
@@ -2006,7 +2006,7 @@ void OPPROTO op_check_reservation (void)
 void OPPROTO op_check_reservation_64 (void)
 {
     if ((uint64_t)env->reserve == (uint64_t)(T0 & ~0x00000003))
-        env->reserve = -1;
+        env->reserve = (target_ulong)-1ULL;
     RETURN();
 }
 #endif
@@ -2344,7 +2344,7 @@ void OPPROTO op_POWER_sleq (void)
 
 void OPPROTO op_POWER_sllq (void)
 {
-    uint32_t msk = -1;
+    uint32_t msk = UINT32_MAX;
 
     msk = msk << (T1 & 0x1FUL);
     if (T1 & 0x20UL)
@@ -2357,7 +2357,7 @@ void OPPROTO op_POWER_sllq (void)
 
 void OPPROTO op_POWER_slq (void)
 {
-    uint32_t msk = -1, tmp;
+    uint32_t msk = UINT32_MAX, tmp;
 
     msk = msk << (T1 & 0x1FUL);
     if (T1 & 0x20UL)
@@ -2373,7 +2373,7 @@ void OPPROTO op_POWER_sraq (void)
 {
     env->spr[SPR_MQ] = rotl32(T0, 32 - (T1 & 0x1FUL));
     if (T1 & 0x20UL)
-        T0 = -1L;
+        T0 = UINT32_MAX;
     else
         T0 = (int32_t)T0 >> T1;
     RETURN();
@@ -2529,7 +2529,7 @@ void OPPROTO op_405_check_satu (void)
 {
     if (unlikely(T0 < T2)) {
         /* Saturate result */
-        T0 = -1;
+        T0 = UINT32_MAX;
     }
     RETURN();
 }
@@ -2602,7 +2602,7 @@ void OPPROTO op_4xx_tlbsx_check (void)
     int tmp;
 
     tmp = xer_so;
-    if (T0 != -1)
+    if ((int)T0 != -1)
         tmp |= 0x02;
     env->crf[0] = tmp;
     RETURN();
diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c
index 2c6cef1..68e90ce 100644
--- a/target-ppc/op_helper.c
+++ b/target-ppc/op_helper.c
@@ -175,29 +175,29 @@ void do_addmeo_64 (void)
 
 void do_divwo (void)
 {
-    if (likely(!(((int32_t)T0 == INT32_MIN && (int32_t)T1 == -1) ||
+    if (likely(!(((int32_t)T0 == INT32_MIN && (int32_t)T1 == (int32_t)-1) ||
                  (int32_t)T1 == 0))) {
         xer_ov = 0;
         T0 = (int32_t)T0 / (int32_t)T1;
     } else {
         xer_ov = 1;
-        xer_so = 1;
-        T0 = (-1) * ((uint32_t)T0 >> 31);
+        T0 = UINT32_MAX * ((uint32_t)T0 >> 31);
     }
+    xer_so |= xer_ov;
 }
 
 #if defined(TARGET_PPC64)
 void do_divdo (void)
 {
-    if (likely(!(((int64_t)T0 == INT64_MIN && (int64_t)T1 == -1ULL) ||
+    if (likely(!(((int64_t)T0 == INT64_MIN && (int64_t)T1 == (int64_t)-1LL) ||
                  (int64_t)T1 == 0))) {
         xer_ov = 0;
         T0 = (int64_t)T0 / (int64_t)T1;
     } else {
         xer_ov = 1;
-        xer_so = 1;
-        T0 = (-1ULL) * ((uint64_t)T0 >> 63);
+        T0 = UINT64_MAX * ((uint64_t)T0 >> 63);
     }
+    xer_so |= xer_ov;
 }
 #endif
 
@@ -247,14 +247,14 @@ void do_mulldo (void)
     uint64_t tl;
 
     muls64(&tl, &th, T0, T1);
+    T0 = (int64_t)tl;
     /* If th != 0 && th != -1, then we had an overflow */
-    if (likely((th + 1) <= 1)) {
+    if (likely((uint64_t)(th + 1) <= 1)) {
         xer_ov = 0;
     } else {
         xer_ov = 1;
-        xer_so = 1;
     }
-    T0 = (int64_t)tl;
+    xer_so |= xer_ov;
 }
 #endif
 
@@ -392,7 +392,7 @@ void do_sraw (void)
             xer_ca = 0;
         }
     } else {
-        ret = (-1) * ((uint32_t)T0 >> 31);
+        ret = UINT32_MAX * ((uint32_t)T0 >> 31);
         if (likely(ret >= 0 || ((uint32_t)T0 & ~0x80000000UL) == 0)) {
             xer_ca = 0;
         } else {
@@ -420,7 +420,7 @@ void do_srad (void)
             xer_ca = 0;
         }
     } else {
-        ret = (-1) * ((uint64_t)T0 >> 63);
+        ret = UINT64_MAX * ((uint64_t)T0 >> 63);
         if (likely(ret >= 0 || ((uint64_t)T0 & ~0x8000000000000000ULL) == 0)) {
             xer_ca = 0;
         } else {
@@ -609,7 +609,7 @@ static always_inline void fload_invalid_op_excp (int op)
         env->fpscr &= ~((1 << FPSCR_FR) | (1 << FPSCR_FI));
         if (ve == 0) {
             /* Set the result to quiet NaN */
-            FT0 = (uint64_t)-1;
+            FT0 = UINT64_MAX;
             env->fpscr &= ~(0xF << FPSCR_FPCC);
             env->fpscr |= 0x11 << FPSCR_FPCC;
         }
@@ -620,7 +620,7 @@ static always_inline void fload_invalid_op_excp (int op)
         env->fpscr &= ~((1 << FPSCR_FR) | (1 << FPSCR_FI));
         if (ve == 0) {
             /* Set the result to quiet NaN */
-            FT0 = (uint64_t)-1;
+            FT0 = UINT64_MAX;
             env->fpscr &= ~(0xF << FPSCR_FPCC);
             env->fpscr |= 0x11 << FPSCR_FPCC;
         }
@@ -1555,8 +1555,9 @@ void do_POWER_div (void)
 {
     uint64_t tmp;
 
-    if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == -1) || (int32_t)T1 == 0) {
-        T0 = (long)((-1) * (T0 >> 31));
+    if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == (int32_t)-1) ||
+        (int32_t)T1 == 0) {
+        T0 = UINT32_MAX * ((uint32_t)T0 >> 31);
         env->spr[SPR_MQ] = 0;
     } else {
         tmp = ((uint64_t)T0 << 32) | env->spr[SPR_MQ];
@@ -1569,29 +1570,30 @@ void do_POWER_divo (void)
 {
     int64_t tmp;
 
-    if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == -1) || (int32_t)T1 == 0) {
-        T0 = (long)((-1) * (T0 >> 31));
+    if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == (int32_t)-1) ||
+        (int32_t)T1 == 0) {
+        T0 = UINT32_MAX * ((uint32_t)T0 >> 31);
         env->spr[SPR_MQ] = 0;
         xer_ov = 1;
-        xer_so = 1;
     } else {
         tmp = ((uint64_t)T0 << 32) | env->spr[SPR_MQ];
         env->spr[SPR_MQ] = tmp % T1;
         tmp /= (int32_t)T1;
         if (tmp > (int64_t)INT32_MAX || tmp < (int64_t)INT32_MIN) {
             xer_ov = 1;
-            xer_so = 1;
         } else {
             xer_ov = 0;
         }
         T0 = tmp;
     }
+    xer_so |= xer_ov;
 }
 
 void do_POWER_divs (void)
 {
-    if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == -1) || (int32_t)T1 == 0) {
-        T0 = (long)((-1) * (T0 >> 31));
+    if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == (int32_t)-1) ||
+        (int32_t)T1 == 0) {
+        T0 = UINT32_MAX * ((uint32_t)T0 >> 31);
         env->spr[SPR_MQ] = 0;
     } else {
         env->spr[SPR_MQ] = T0 % T1;
@@ -1601,16 +1603,17 @@ void do_POWER_divs (void)
 
 void do_POWER_divso (void)
 {
-    if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == -1) || (int32_t)T1 == 0) {
-        T0 = (long)((-1) * (T0 >> 31));
+    if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == (int32_t)-1) ||
+        (int32_t)T1 == 0) {
+        T0 = UINT32_MAX * ((uint32_t)T0 >> 31);
         env->spr[SPR_MQ] = 0;
         xer_ov = 1;
-        xer_so = 1;
     } else {
         T0 = (int32_t)T0 / (int32_t)T1;
         env->spr[SPR_MQ] = (int32_t)T0 % (int32_t)T1;
         xer_ov = 0;
     }
+    xer_so |= xer_ov;
 }
 
 void do_POWER_dozo (void)
@@ -1636,10 +1639,10 @@ void do_POWER_maskg (void)
     uint32_t ret;
 
     if ((uint32_t)T0 == (uint32_t)(T1 + 1)) {
-        ret = -1;
+        ret = UINT32_MAX;
     } else {
-        ret = (((uint32_t)(-1)) >> ((uint32_t)T0)) ^
-            (((uint32_t)(-1) >> ((uint32_t)T1)) >> 1);
+        ret = (UINT32_MAX >> ((uint32_t)T0)) ^
+            ((UINT32_MAX >> ((uint32_t)T1)) >> 1);
         if ((uint32_t)T0 > (uint32_t)T1)
             ret = ~ret;
     }
@@ -1874,7 +1877,7 @@ void do_brinc (void)
 {
     uint32_t a, b, d, mask;
 
-    mask = (uint32_t)(-1UL) >> MASKBITS;
+    mask = UINT32_MAX >> MASKBITS;
     b = T1_64 & mask;
     a = T0_64 & mask;
     d = word_reverse(1 + word_reverse(a | ~mask));
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 73b2e22..be4ac53 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -404,15 +404,15 @@ static always_inline target_ulong MASK (uint32_t start, uint32_t end)
 
 #if defined(TARGET_PPC64)
     if (likely(start == 0)) {
-        ret = (uint64_t)(-1ULL) << (63 - end);
+        ret = UINT64_MAX << (63 - end);
     } else if (likely(end == 63)) {
-        ret = (uint64_t)(-1ULL) >> start;
+        ret = UINT64_MAX >> start;
     }
 #else
     if (likely(start == 0)) {
-        ret = (uint32_t)(-1ULL) << (31  - end);
+        ret = UINT32_MAX << (31  - end);
     } else if (likely(end == 31)) {
-        ret = (uint32_t)(-1ULL) >> start;
+        ret = UINT32_MAX >> start;
     }
 #endif
     else {
@@ -3517,7 +3517,7 @@ GEN_HANDLER(mfmsr, 0x1F, 0x13, 0x02, 0x001FF801, PPC_MISC)
 }
 
 #if 1
-#define SPR_NOACCESS ((void *)(-1))
+#define SPR_NOACCESS ((void *)(-1UL))
 #else
 static void spr_noaccess (void *opaque, int sprn)
 {