target/microblaze: Split out MSR from env->sregs

Continue eliminating the sregs array in favor of individual members.
Does not correct the width of MSR, yet.

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 24 insertions, 25 deletions

diff --git a/target/microblaze/helper.c b/target/microblaze/helper.c
index 5c392de..a183145 100644
--- a/target/microblaze/helper.c
+++ b/target/microblaze/helper.c
@@ -117,7 +117,7 @@ void mb_cpu_do_interrupt(CPUState *cs)
     /* IMM flag cannot propagate across a branch and into the dslot.  */
     assert(!((env->iflags & D_FLAG) && (env->iflags & IMM_FLAG)));
     assert(!(env->iflags & (DRTI_FLAG | DRTE_FLAG | DRTB_FLAG)));
-/*    assert(env->sregs[SR_MSR] & (MSR_EE)); Only for HW exceptions.  */
+/*    assert(env->msr & (MSR_EE)); Only for HW exceptions.  */
     env->res_addr = RES_ADDR_NONE;
     switch (cs->exception_index) {
         case EXCP_HW_EXCP:
@@ -136,11 +136,11 @@ void mb_cpu_do_interrupt(CPUState *cs)
             }
 
             /* Disable the MMU.  */
-            t = (env->sregs[SR_MSR] & (MSR_VM | MSR_UM)) << 1;
-            env->sregs[SR_MSR] &= ~(MSR_VMS | MSR_UMS | MSR_VM | MSR_UM);
-            env->sregs[SR_MSR] |= t;
+            t = (env->msr & (MSR_VM | MSR_UM)) << 1;
+            env->msr &= ~(MSR_VMS | MSR_UMS | MSR_VM | MSR_UM);
+            env->msr |= t;
             /* Exception in progress.  */
-            env->sregs[SR_MSR] |= MSR_EIP;
+            env->msr |= MSR_EIP;
 
             qemu_log_mask(CPU_LOG_INT,
                           "hw exception at pc=%" PRIx64 " ear=%" PRIx64 " "
@@ -179,11 +179,11 @@ void mb_cpu_do_interrupt(CPUState *cs)
             }
 
             /* Disable the MMU.  */
-            t = (env->sregs[SR_MSR] & (MSR_VM | MSR_UM)) << 1;
-            env->sregs[SR_MSR] &= ~(MSR_VMS | MSR_UMS | MSR_VM | MSR_UM);
-            env->sregs[SR_MSR] |= t;
+            t = (env->msr & (MSR_VM | MSR_UM)) << 1;
+            env->msr &= ~(MSR_VMS | MSR_UMS | MSR_VM | MSR_UM);
+            env->msr |= t;
             /* Exception in progress.  */
-            env->sregs[SR_MSR] |= MSR_EIP;
+            env->msr |= MSR_EIP;
 
             qemu_log_mask(CPU_LOG_INT,
                           "exception at pc=%" PRIx64 " ear=%" PRIx64 " "
@@ -195,11 +195,11 @@ void mb_cpu_do_interrupt(CPUState *cs)
             break;
 
         case EXCP_IRQ:
-            assert(!(env->sregs[SR_MSR] & (MSR_EIP | MSR_BIP)));
-            assert(env->sregs[SR_MSR] & MSR_IE);
+            assert(!(env->msr & (MSR_EIP | MSR_BIP)));
+            assert(env->msr & MSR_IE);
             assert(!(env->iflags & D_FLAG));
 
-            t = (env->sregs[SR_MSR] & (MSR_VM | MSR_UM)) << 1;
+            t = (env->msr & (MSR_VM | MSR_UM)) << 1;
 
 #if 0
 #include "disas/disas.h"
@@ -216,7 +216,7 @@ void mb_cpu_do_interrupt(CPUState *cs)
 
                     qemu_log(
                          "interrupt at pc=%x msr=%x %x iflags=%x sym=%s\n",
-                         env->pc, env->sregs[SR_MSR], t, env->iflags,
+                         env->pc, env->msr, t, env->iflags,
                          sym);
 
                     log_cpu_state(cs, 0);
@@ -226,11 +226,10 @@ void mb_cpu_do_interrupt(CPUState *cs)
             qemu_log_mask(CPU_LOG_INT,
                          "interrupt at pc=%" PRIx64 " msr=%" PRIx64 " %x "
                          "iflags=%x\n",
-                         env->pc, env->sregs[SR_MSR], t, env->iflags);
+                         env->pc, env->msr, t, env->iflags);
 
-            env->sregs[SR_MSR] &= ~(MSR_VMS | MSR_UMS | MSR_VM \
-                                    | MSR_UM | MSR_IE);
-            env->sregs[SR_MSR] |= t;
+            env->msr &= ~(MSR_VMS | MSR_UMS | MSR_VM | MSR_UM | MSR_IE);
+            env->msr |= t;
 
             env->regs[14] = env->pc;
             env->pc = cpu->cfg.base_vectors + 0x10;
@@ -241,18 +240,18 @@ void mb_cpu_do_interrupt(CPUState *cs)
         case EXCP_HW_BREAK:
             assert(!(env->iflags & IMM_FLAG));
             assert(!(env->iflags & D_FLAG));
-            t = (env->sregs[SR_MSR] & (MSR_VM | MSR_UM)) << 1;
+            t = (env->msr & (MSR_VM | MSR_UM)) << 1;
             qemu_log_mask(CPU_LOG_INT,
                         "break at pc=%" PRIx64 " msr=%" PRIx64 " %x "
                         "iflags=%x\n",
-                        env->pc, env->sregs[SR_MSR], t, env->iflags);
+                        env->pc, env->msr, t, env->iflags);
             log_cpu_state_mask(CPU_LOG_INT, cs, 0);
-            env->sregs[SR_MSR] &= ~(MSR_VMS | MSR_UMS | MSR_VM | MSR_UM);
-            env->sregs[SR_MSR] |= t;
-            env->sregs[SR_MSR] |= MSR_BIP;
+            env->msr &= ~(MSR_VMS | MSR_UMS | MSR_VM | MSR_UM);
+            env->msr |= t;
+            env->msr |= MSR_BIP;
             if (cs->exception_index == EXCP_HW_BREAK) {
                 env->regs[16] = env->pc;
-                env->sregs[SR_MSR] |= MSR_BIP;
+                env->msr |= MSR_BIP;
                 env->pc = cpu->cfg.base_vectors + 0x18;
             } else
                 env->pc = env->btarget;
@@ -293,8 +292,8 @@ bool mb_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
     CPUMBState *env = &cpu->env;
 
     if ((interrupt_request & CPU_INTERRUPT_HARD)
-        && (env->sregs[SR_MSR] & MSR_IE)
-        && !(env->sregs[SR_MSR] & (MSR_EIP | MSR_BIP))
+        && (env->msr & MSR_IE)
+        && !(env->msr & (MSR_EIP | MSR_BIP))
         && !(env->iflags & (D_FLAG | IMM_FLAG))) {
         cs->exception_index = EXCP_IRQ;
         mb_cpu_do_interrupt(cs);