All of lore.kernel.org
 help / color / mirror / Atom feed
From: Aleksandar Markovic <aleksandar.markovic@rt-rk.com>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, Yongbok Kim <yongbok.kim@mips.com>,
	amarkovic@wavecomp.com
Subject: [PULL 6/6] target/mips: Add implementation of GINVT instruction
Date: Wed, 29 Jan 2020 19:34:17 +0100	[thread overview]
Message-ID: <1580322857-14331-7-git-send-email-aleksandar.markovic@rt-rk.com> (raw)
In-Reply-To: <1580322857-14331-1-git-send-email-aleksandar.markovic@rt-rk.com>

From: Yongbok Kim <yongbok.kim@mips.com>

Implement emulation of GINVT instruction. As QEMU doesn't support
caches and virtualization, this implementation covers only one
instruction (GINVT - Global Invalidate TLB) among all TLB-related
MIPS instructions.

Reviewed-by: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
Signed-off-by: Yongbok Kim <yongbok.kim@mips.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579883929-1517-5-git-send-email-aleksandar.markovic@rt-rk.com>
---
 disas/mips.c            |  10 ++++
 target/mips/cpu.h       |   2 +-
 target/mips/helper.c    |  20 ++++++--
 target/mips/helper.h    |   2 +
 target/mips/internal.h  |   1 +
 target/mips/op_helper.c | 129 +++++++++++++++++++++++++++++++++++++++++-------
 target/mips/translate.c |  46 ++++++++++++++++-
 7 files changed, 184 insertions(+), 26 deletions(-)

diff --git a/disas/mips.c b/disas/mips.c
index dfefe5e..b9a5204 100644
--- a/disas/mips.c
+++ b/disas/mips.c
@@ -1409,6 +1409,16 @@ const struct mips_opcode mips_builtin_opcodes[] =
 {"dvp",        "t",     0x41600024, 0xffe0ffff, TRAP|WR_t,            0, I32R6},
 {"evp",        "",      0x41600004, 0xffffffff, TRAP,                 0, I32R6},
 {"evp",        "t",     0x41600004, 0xffe0ffff, TRAP|WR_t,            0, I32R6},
+{"ginvi",      "v",     0x7c00003d, 0xfc1ffcff, TRAP | INSN_TLB,      0, I32R6},
+{"ginvt",      "v",     0x7c0000bd, 0xfc1ffcff, TRAP | INSN_TLB,      0, I32R6},
+{"crc32b",     "t,v,t", 0x7c00000f, 0xfc00ff3f, WR_d | RD_s | RD_t,   0, I32R6},
+{"crc32h",     "t,v,t", 0x7c00004f, 0xfc00ff3f, WR_d | RD_s | RD_t,   0, I32R6},
+{"crc32w",     "t,v,t", 0x7c00008f, 0xfc00ff3f, WR_d | RD_s | RD_t,   0, I32R6},
+{"crc32d",     "t,v,t", 0x7c0000cf, 0xfc00ff3f, WR_d | RD_s | RD_t,   0, I64R6},
+{"crc32cb",    "t,v,t", 0x7c00010f, 0xfc00ff3f, WR_d | RD_s | RD_t,   0, I32R6},
+{"crc32ch",    "t,v,t", 0x7c00014f, 0xfc00ff3f, WR_d | RD_s | RD_t,   0, I32R6},
+{"crc32cw",    "t,v,t", 0x7c00018f, 0xfc00ff3f, WR_d | RD_s | RD_t,   0, I32R6},
+{"crc32cd",    "t,v,t", 0x7c0001cf, 0xfc00ff3f, WR_d | RD_s | RD_t,   0, I64R6},
 
 /* MSA */
 {"sll.b",   "+d,+e,+f", 0x7800000d, 0xffe0003f, WR_VD|RD_VS|RD_VT,  0, MSA},
diff --git a/target/mips/cpu.h b/target/mips/cpu.h
index 7cf1b49..94d01ea 100644
--- a/target/mips/cpu.h
+++ b/target/mips/cpu.h
@@ -309,7 +309,7 @@ typedef struct mips_def_t mips_def_t;
 #define CP0_REG04__USERLOCAL       2
 #define CP0_REG04__XCONTEXTCONFIG  3
 #define CP0_REG04__DBGCONTEXTID    4
-#define CP0_REG00__MMID            5
+#define CP0_REG04__MMID            5
 /* CP0 Register 05 */
 #define CP0_REG05__PAGEMASK        0
 #define CP0_REG05__PAGEGRAIN       1
diff --git a/target/mips/helper.c b/target/mips/helper.c
index 781930a..afd78b1 100644
--- a/target/mips/helper.c
+++ b/target/mips/helper.c
@@ -72,8 +72,13 @@ int r4k_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
                     target_ulong address, int rw, int access_type)
 {
     uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
+    uint32_t MMID = env->CP0_MemoryMapID;
+    bool mi = !!((env->CP0_Config5 >> CP0C5_MI) & 1);
+    uint32_t tlb_mmid;
     int i;
 
+    MMID = mi ? MMID : (uint32_t) ASID;
+
     for (i = 0; i < env->tlb->tlb_in_use; i++) {
         r4k_tlb_t *tlb = &env->tlb->mmu.r4k.tlb[i];
         /* 1k pages are not supported. */
@@ -84,8 +89,9 @@ int r4k_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
         tag &= env->SEGMask;
 #endif
 
-        /* Check ASID, virtual page number & size */
-        if ((tlb->G == 1 || tlb->ASID == ASID) && VPN == tag && !tlb->EHINV) {
+        /* Check ASID/MMID, virtual page number & size */
+        tlb_mmid = mi ? tlb->MMID : (uint32_t) tlb->ASID;
+        if ((tlb->G == 1 || tlb_mmid == MMID) && VPN == tag && !tlb->EHINV) {
             /* TLB match */
             int n = !!(address & mask & ~(mask >> 1));
             /* Check access rights */
@@ -1418,14 +1424,20 @@ void r4k_invalidate_tlb(CPUMIPSState *env, int idx, int use_extra)
     target_ulong addr;
     target_ulong end;
     uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
+    uint32_t MMID = env->CP0_MemoryMapID;
+    bool mi = !!((env->CP0_Config5 >> CP0C5_MI) & 1);
+    uint32_t tlb_mmid;
     target_ulong mask;
 
+    MMID = mi ? MMID : (uint32_t) ASID;
+
     tlb = &env->tlb->mmu.r4k.tlb[idx];
     /*
-     * The qemu TLB is flushed when the ASID changes, so no need to
+     * The qemu TLB is flushed when the ASID/MMID changes, so no need to
      * flush these entries again.
      */
-    if (tlb->G == 0 && tlb->ASID != ASID) {
+    tlb_mmid = mi ? tlb->MMID : (uint32_t) tlb->ASID;
+    if (tlb->G == 0 && tlb_mmid != MMID) {
         return;
     }
 
diff --git a/target/mips/helper.h b/target/mips/helper.h
index 5b1f8bb..84fdd9f 100644
--- a/target/mips/helper.h
+++ b/target/mips/helper.h
@@ -120,6 +120,7 @@ DEF_HELPER_2(mtc0_tcschefback, void, env, tl)
 DEF_HELPER_2(mttc0_tcschefback, void, env, tl)
 DEF_HELPER_2(mtc0_entrylo1, void, env, tl)
 DEF_HELPER_2(mtc0_context, void, env, tl)
+DEF_HELPER_2(mtc0_memorymapid, void, env, tl)
 DEF_HELPER_2(mtc0_pagemask, void, env, tl)
 DEF_HELPER_2(mtc0_pagegrain, void, env, tl)
 DEF_HELPER_2(mtc0_segctl0, void, env, tl)
@@ -376,6 +377,7 @@ DEF_HELPER_1(ei, tl, env)
 DEF_HELPER_1(eret, void, env)
 DEF_HELPER_1(eretnc, void, env)
 DEF_HELPER_1(deret, void, env)
+DEF_HELPER_3(ginvt, void, env, tl, i32)
 #endif /* !CONFIG_USER_ONLY */
 DEF_HELPER_1(rdhwr_cpunum, tl, env)
 DEF_HELPER_1(rdhwr_synci_step, tl, env)
diff --git a/target/mips/internal.h b/target/mips/internal.h
index 3f435b5..df55f84 100644
--- a/target/mips/internal.h
+++ b/target/mips/internal.h
@@ -95,6 +95,7 @@ struct r4k_tlb_t {
     target_ulong VPN;
     uint32_t PageMask;
     uint16_t ASID;
+    uint32_t MMID;
     unsigned int G:1;
     unsigned int C0:3;
     unsigned int C1:3;
diff --git a/target/mips/op_helper.c b/target/mips/op_helper.c
index 7425a88..15d05a5 100644
--- a/target/mips/op_helper.c
+++ b/target/mips/op_helper.c
@@ -1389,6 +1389,17 @@ void helper_mtc0_context(CPUMIPSState *env, target_ulong arg1)
     env->CP0_Context = (env->CP0_Context & 0x007FFFFF) | (arg1 & ~0x007FFFFF);
 }
 
+void helper_mtc0_memorymapid(CPUMIPSState *env, target_ulong arg1)
+{
+    int32_t old;
+    old = env->CP0_MemoryMapID;
+    env->CP0_MemoryMapID = (int32_t) arg1;
+    /* If the MemoryMapID changes, flush qemu's TLB.  */
+    if (old != env->CP0_MemoryMapID) {
+        cpu_mips_tlb_flush(env);
+    }
+}
+
 void update_pagemask(CPUMIPSState *env, target_ulong arg1, int32_t *pagemask)
 {
     uint64_t mask = arg1 >> (TARGET_PAGE_BITS + 1);
@@ -1825,6 +1836,8 @@ void helper_mtc0_config5(CPUMIPSState *env, target_ulong arg1)
 {
     env->CP0_Config5 = (env->CP0_Config5 & (~env->CP0_Config5_rw_bitmask)) |
                        (arg1 & env->CP0_Config5_rw_bitmask);
+    env->CP0_EntryHi_ASID_mask = (env->CP0_Config5 & (1 << CP0C5_MI)) ?
+            0x0 : (env->CP0_Config4 & (1 << CP0C4_AE)) ? 0x3ff : 0xff;
     compute_hflags(env);
 }
 
@@ -2268,6 +2281,7 @@ static void r4k_fill_tlb(CPUMIPSState *env, int idx)
     tlb->VPN &= env->SEGMask;
 #endif
     tlb->ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
+    tlb->MMID = env->CP0_MemoryMapID;
     tlb->PageMask = env->CP0_PageMask;
     tlb->G = env->CP0_EntryLo0 & env->CP0_EntryLo1 & 1;
     tlb->V0 = (env->CP0_EntryLo0 & 2) != 0;
@@ -2286,13 +2300,18 @@ static void r4k_fill_tlb(CPUMIPSState *env, int idx)
 
 void r4k_helper_tlbinv(CPUMIPSState *env)
 {
-    int idx;
-    r4k_tlb_t *tlb;
+    bool mi = !!((env->CP0_Config5 >> CP0C5_MI) & 1);
     uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
+    uint32_t MMID = env->CP0_MemoryMapID;
+    uint32_t tlb_mmid;
+    r4k_tlb_t *tlb;
+    int idx;
 
+    MMID = mi ? MMID : (uint32_t) ASID;
     for (idx = 0; idx < env->tlb->nb_tlb; idx++) {
         tlb = &env->tlb->mmu.r4k.tlb[idx];
-        if (!tlb->G && tlb->ASID == ASID) {
+        tlb_mmid = mi ? tlb->MMID : (uint32_t) tlb->ASID;
+        if (!tlb->G && tlb_mmid == MMID) {
             tlb->EHINV = 1;
         }
     }
@@ -2311,11 +2330,16 @@ void r4k_helper_tlbinvf(CPUMIPSState *env)
 
 void r4k_helper_tlbwi(CPUMIPSState *env)
 {
-    r4k_tlb_t *tlb;
-    int idx;
+    bool mi = !!((env->CP0_Config5 >> CP0C5_MI) & 1);
     target_ulong VPN;
-    uint16_t ASID;
+    uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
+    uint32_t MMID = env->CP0_MemoryMapID;
+    uint32_t tlb_mmid;
     bool EHINV, G, V0, D0, V1, D1, XI0, XI1, RI0, RI1;
+    r4k_tlb_t *tlb;
+    int idx;
+
+    MMID = mi ? MMID : (uint32_t) ASID;
 
     idx = (env->CP0_Index & ~0x80000000) % env->tlb->nb_tlb;
     tlb = &env->tlb->mmu.r4k.tlb[idx];
@@ -2323,7 +2347,6 @@ void r4k_helper_tlbwi(CPUMIPSState *env)
 #if defined(TARGET_MIPS64)
     VPN &= env->SEGMask;
 #endif
-    ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
     EHINV = (env->CP0_EntryHi & (1 << CP0EnHi_EHINV)) != 0;
     G = env->CP0_EntryLo0 & env->CP0_EntryLo1 & 1;
     V0 = (env->CP0_EntryLo0 & 2) != 0;
@@ -2335,11 +2358,12 @@ void r4k_helper_tlbwi(CPUMIPSState *env)
     XI1 = (env->CP0_EntryLo1 >> CP0EnLo_XI) &1;
     RI1 = (env->CP0_EntryLo1 >> CP0EnLo_RI) &1;
 
+    tlb_mmid = mi ? tlb->MMID : (uint32_t) tlb->ASID;
     /*
      * Discard cached TLB entries, unless tlbwi is just upgrading access
      * permissions on the current entry.
      */
-    if (tlb->VPN != VPN || tlb->ASID != ASID || tlb->G != G ||
+    if (tlb->VPN != VPN || tlb_mmid != MMID || tlb->G != G ||
         (!tlb->EHINV && EHINV) ||
         (tlb->V0 && !V0) || (tlb->D0 && !D0) ||
         (!tlb->XI0 && XI0) || (!tlb->RI0 && RI0) ||
@@ -2362,14 +2386,17 @@ void r4k_helper_tlbwr(CPUMIPSState *env)
 
 void r4k_helper_tlbp(CPUMIPSState *env)
 {
+    bool mi = !!((env->CP0_Config5 >> CP0C5_MI) & 1);
     r4k_tlb_t *tlb;
     target_ulong mask;
     target_ulong tag;
     target_ulong VPN;
-    uint16_t ASID;
+    uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
+    uint32_t MMID = env->CP0_MemoryMapID;
+    uint32_t tlb_mmid;
     int i;
 
-    ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
+    MMID = mi ? MMID : (uint32_t) ASID;
     for (i = 0; i < env->tlb->nb_tlb; i++) {
         tlb = &env->tlb->mmu.r4k.tlb[i];
         /* 1k pages are not supported. */
@@ -2379,8 +2406,9 @@ void r4k_helper_tlbp(CPUMIPSState *env)
 #if defined(TARGET_MIPS64)
         tag &= env->SEGMask;
 #endif
-        /* Check ASID, virtual page number & size */
-        if ((tlb->G == 1 || tlb->ASID == ASID) && VPN == tag && !tlb->EHINV) {
+        tlb_mmid = mi ? tlb->MMID : (uint32_t) tlb->ASID;
+        /* Check ASID/MMID, virtual page number & size */
+        if ((tlb->G == 1 || tlb_mmid == MMID) && VPN == tag && !tlb->EHINV) {
             /* TLB match */
             env->CP0_Index = i;
             break;
@@ -2397,8 +2425,9 @@ void r4k_helper_tlbp(CPUMIPSState *env)
 #if defined(TARGET_MIPS64)
             tag &= env->SEGMask;
 #endif
-            /* Check ASID, virtual page number & size */
-            if ((tlb->G == 1 || tlb->ASID == ASID) && VPN == tag) {
+            tlb_mmid = mi ? tlb->MMID : (uint32_t) tlb->ASID;
+            /* Check ASID/MMID, virtual page number & size */
+            if ((tlb->G == 1 || tlb_mmid == MMID) && VPN == tag) {
                 r4k_mips_tlb_flush_extra(env, i);
                 break;
             }
@@ -2420,16 +2449,20 @@ static inline uint64_t get_entrylo_pfn_from_tlb(uint64_t tlb_pfn)
 
 void r4k_helper_tlbr(CPUMIPSState *env)
 {
+    bool mi = !!((env->CP0_Config5 >> CP0C5_MI) & 1);
+    uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
+    uint32_t MMID = env->CP0_MemoryMapID;
+    uint32_t tlb_mmid;
     r4k_tlb_t *tlb;
-    uint16_t ASID;
     int idx;
 
-    ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
+    MMID = mi ? MMID : (uint32_t) ASID;
     idx = (env->CP0_Index & ~0x80000000) % env->tlb->nb_tlb;
     tlb = &env->tlb->mmu.r4k.tlb[idx];
 
-    /* If this will change the current ASID, flush qemu's TLB.  */
-    if (ASID != tlb->ASID) {
+    tlb_mmid = mi ? tlb->MMID : (uint32_t) tlb->ASID;
+    /* If this will change the current ASID/MMID, flush qemu's TLB.  */
+    if (MMID != tlb_mmid) {
         cpu_mips_tlb_flush(env);
     }
 
@@ -2441,7 +2474,8 @@ void r4k_helper_tlbr(CPUMIPSState *env)
         env->CP0_EntryLo0 = 0;
         env->CP0_EntryLo1 = 0;
     } else {
-        env->CP0_EntryHi = tlb->VPN | tlb->ASID;
+        env->CP0_EntryHi = mi ? tlb->VPN : tlb->VPN | tlb->ASID;
+        env->CP0_MemoryMapID = tlb->MMID;
         env->CP0_PageMask = tlb->PageMask;
         env->CP0_EntryLo0 = tlb->G | (tlb->V0 << 1) | (tlb->D0 << 2) |
                         ((uint64_t)tlb->RI0 << CP0EnLo_RI) |
@@ -2484,6 +2518,63 @@ void helper_tlbinvf(CPUMIPSState *env)
     env->tlb->helper_tlbinvf(env);
 }
 
+static void global_invalidate_tlb(CPUMIPSState *env,
+                           uint32_t invMsgVPN2,
+                           uint8_t invMsgR,
+                           uint32_t invMsgMMid,
+                           bool invAll,
+                           bool invVAMMid,
+                           bool invMMid,
+                           bool invVA)
+{
+
+    int idx;
+    r4k_tlb_t *tlb;
+    bool VAMatch;
+    bool MMidMatch;
+
+    for (idx = 0; idx < env->tlb->nb_tlb; idx++) {
+        tlb = &env->tlb->mmu.r4k.tlb[idx];
+        VAMatch =
+            (((tlb->VPN & ~tlb->PageMask) == (invMsgVPN2 & ~tlb->PageMask))
+#ifdef TARGET_MIPS64
+            &&
+            (extract64(env->CP0_EntryHi, 62, 2) == invMsgR)
+#endif
+            );
+        MMidMatch = tlb->MMID == invMsgMMid;
+        if ((invAll && (idx > env->CP0_Wired)) ||
+            (VAMatch && invVAMMid && (tlb->G || MMidMatch)) ||
+            (VAMatch && invVA) ||
+            (MMidMatch && !(tlb->G) && invMMid)) {
+            tlb->EHINV = 1;
+        }
+    }
+    cpu_mips_tlb_flush(env);
+}
+
+void helper_ginvt(CPUMIPSState *env, target_ulong arg, uint32_t type)
+{
+    bool invAll = type == 0;
+    bool invVA = type == 1;
+    bool invMMid = type == 2;
+    bool invVAMMid = type == 3;
+    uint32_t invMsgVPN2 = arg & (TARGET_PAGE_MASK << 1);
+    uint8_t invMsgR = 0;
+    uint32_t invMsgMMid = env->CP0_MemoryMapID;
+    CPUState *other_cs = first_cpu;
+
+#ifdef TARGET_MIPS64
+    invMsgR = extract64(arg, 62, 2);
+#endif
+
+    CPU_FOREACH(other_cs) {
+        MIPSCPU *other_cpu = MIPS_CPU(other_cs);
+        global_invalidate_tlb(&other_cpu->env, invMsgVPN2, invMsgR, invMsgMMid,
+                              invAll, invVAMMid, invMMid, invVA);
+    }
+}
+
 /* Specials */
 target_ulong helper_di(CPUMIPSState *env)
 {
diff --git a/target/mips/translate.c b/target/mips/translate.c
index d51330c..d745bd2 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -388,6 +388,7 @@ enum {
     OPC_BSHFL    = 0x20 | OPC_SPECIAL3,
     OPC_DBSHFL   = 0x24 | OPC_SPECIAL3,
     OPC_RDHWR    = 0x3B | OPC_SPECIAL3,
+    OPC_GINV     = 0x3D | OPC_SPECIAL3,
 
     /* Loongson 2E */
     OPC_MULT_G_2E   = 0x18 | OPC_SPECIAL3,
@@ -2548,6 +2549,7 @@ typedef struct DisasContext {
     bool abs2008;
     bool saar;
     bool mi;
+    int gi;
 } DisasContext;
 
 #define DISAS_STOP       DISAS_TARGET_0
@@ -7131,6 +7133,11 @@ static void gen_mfc0(DisasContext *ctx, TCGv arg, int reg, int sel)
             tcg_gen_ext32s_tl(arg, arg);
             register_name = "UserLocal";
             break;
+        case CP0_REG04__MMID:
+            CP0_CHECK(ctx->mi);
+            gen_helper_mtc0_memorymapid(cpu_env, arg);
+            register_name = "MMID";
+            break;
         default:
             goto cp0_unimplemented;
         }
@@ -7871,6 +7878,11 @@ static void gen_mtc0(DisasContext *ctx, TCGv arg, int reg, int sel)
                           offsetof(CPUMIPSState, active_tc.CP0_UserLocal));
             register_name = "UserLocal";
             break;
+        case CP0_REG04__MMID:
+            CP0_CHECK(ctx->mi);
+            gen_mfc0_load32(arg, offsetof(CPUMIPSState, CP0_MemoryMapID));
+            register_name = "MMID";
+            break;
         default:
             goto cp0_unimplemented;
         }
@@ -8629,6 +8641,11 @@ static void gen_dmfc0(DisasContext *ctx, TCGv arg, int reg, int sel)
                           offsetof(CPUMIPSState, active_tc.CP0_UserLocal));
             register_name = "UserLocal";
             break;
+        case CP0_REG04__MMID:
+            CP0_CHECK(ctx->mi);
+            gen_helper_mtc0_memorymapid(cpu_env, arg);
+            register_name = "MMID";
+            break;
         default:
             goto cp0_unimplemented;
         }
@@ -9351,6 +9368,11 @@ static void gen_dmtc0(DisasContext *ctx, TCGv arg, int reg, int sel)
                           offsetof(CPUMIPSState, active_tc.CP0_UserLocal));
             register_name = "UserLocal";
             break;
+        case CP0_REG04__MMID:
+            CP0_CHECK(ctx->mi);
+            gen_mfc0_load32(arg, offsetof(CPUMIPSState, CP0_MemoryMapID));
+            register_name = "MMID";
+            break;
         default:
             goto cp0_unimplemented;
         }
@@ -27209,6 +27231,25 @@ static void decode_opc_special3_r6(CPUMIPSState *env, DisasContext *ctx)
             }
         }
         break;
+#ifndef CONFIG_USER_ONLY
+    case OPC_GINV:
+        if (unlikely(ctx->gi <= 1)) {
+            generate_exception_end(ctx, EXCP_RI);
+        }
+        check_cp0_enabled(ctx);
+        switch ((ctx->opcode >> 6) & 3) {
+        case 0:    /* GINVI */
+            /* Treat as NOP. */
+            break;
+        case 2:    /* GINVT */
+            gen_helper_0e1i(ginvt, cpu_gpr[rs], extract32(ctx->opcode, 8, 2));
+            break;
+        default:
+            generate_exception_end(ctx, EXCP_RI);
+            break;
+        }
+        break;
+#endif
 #if defined(TARGET_MIPS64)
     case R6_OPC_SCD:
         gen_st_cond(ctx, rt, rs, imm, MO_TEQ, false);
@@ -30767,6 +30808,7 @@ static void mips_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
     ctx->nan2008 = (env->active_fpu.fcr31 >> FCR31_NAN2008) & 1;
     ctx->abs2008 = (env->active_fpu.fcr31 >> FCR31_ABS2008) & 1;
     ctx->mi = (env->CP0_Config5 >> CP0C5_MI) & 1;
+    ctx->gi = (env->CP0_Config5 >> CP0C5_GI) & 3;
     restore_cpu_state(env, ctx);
 #ifdef CONFIG_USER_ONLY
         ctx->mem_idx = MIPS_HFLAG_UM;
@@ -31227,8 +31269,8 @@ void cpu_state_reset(CPUMIPSState *env)
     if (env->CP0_Config3 & (1 << CP0C3_CMGCR)) {
         env->CP0_CMGCRBase = 0x1fbf8000 >> 4;
     }
-    env->CP0_EntryHi_ASID_mask = (env->CP0_Config4 & (1 << CP0C4_AE)) ?
-                                 0x3ff : 0xff;
+    env->CP0_EntryHi_ASID_mask = (env->CP0_Config5 & (1 << CP0C5_MI)) ?
+            0x0 : (env->CP0_Config4 & (1 << CP0C4_AE)) ? 0x3ff : 0xff;
     env->CP0_Status = (1 << CP0St_BEV) | (1 << CP0St_ERL);
     /*
      * Vectored interrupts not implemented, timer on int 7,
-- 
2.7.4



  parent reply	other threads:[~2020-01-29 18:36 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-29 18:34 [PULL 0/6] MIPS queue for January 29th, 2020 Aleksandar Markovic
2020-01-29 18:34 ` [PULL 1/6] target/mips: Rectify documentation on deprecating MIPS r4k machine Aleksandar Markovic
2020-01-29 18:34 ` [PULL 2/6] disas: Add a field for target-dependant data to disassemble_info Aleksandar Markovic
2020-01-29 18:34 ` [PULL 3/6] target/mips: semihosting: Remove 'uhi_done' label in helper_do_semihosting() Aleksandar Markovic
2020-01-29 18:34 ` [PULL 4/6] hw/core/loader: Let load_elf() populate a field with CPU-specific flags Aleksandar Markovic
2020-01-29 18:34 ` [PULL 5/6] target/mips: Amend CP0 WatchHi register implementation Aleksandar Markovic
2020-01-29 18:34 ` Aleksandar Markovic [this message]
2020-01-30 15:47 ` [PULL 0/6] MIPS queue for January 29th, 2020 Peter Maydell
  -- strict thread matches above, loose matches on Subject: below --
2020-01-28 20:09 [PULL 0/6] MIPS queue for January 28th, 2020 Aleksandar Markovic
2020-01-28 20:09 ` [PULL 6/6] target/mips: Add implementation of GINVT instruction Aleksandar Markovic

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1580322857-14331-7-git-send-email-aleksandar.markovic@rt-rk.com \
    --to=aleksandar.markovic@rt-rk.com \
    --cc=amarkovic@wavecomp.com \
    --cc=peter.maydell@linaro.org \
    --cc=qemu-devel@nongnu.org \
    --cc=yongbok.kim@mips.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.