target/riscv: Convert MIP CSR to target_ulong

The MIP CSR is a xlen CSR, it was only 32-bits to allow atomic access.
Now that we don't use atomics for MIP we can change this back to a xlen
CSR.
Signed-off-by: NAlistair Francis <alistair.francis@wdc.com>
Reviewed-by: NPalmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: NPalmer Dabbelt <palmerdabbelt@google.com>

target/riscv/cpu.c

@@ -224,7 +224,7 @@ static void riscv_cpu_dump_state(CPUState *cs, FILE *f, int flags)
 #ifndef CONFIG_USER_ONLY
     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mhartid ", env->mhartid);
     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mstatus ", env->mstatus);
-    qemu_fprintf(f, " %s 0x%x\n", "mip     ", env->mip);
+    qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mip     ", env->mip);
     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mie     ", env->mie);
     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mideleg ", env->mideleg);
     qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "medeleg ", env->medeleg);

target/riscv/cpu.h

@@ -121,7 +121,7 @@ struct CPURISCVState {
     target_ulong mhartid;
     target_ulong mstatus;
 
-    uint32_t mip;
+    target_ulong mip;
     uint32_t miclaim;
 
     target_ulong mie;