Access to the PVR SPR is normally forbidden from userspace apps. The
Linux kernel, however, fixes up reads in the appropriate trap handler.
To permit applications that read PVR to run on QEMU, then, we need to
implement the same handling of PVR reads.
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: malc <av1474@comtv.ru>
/* Register SPR common to all PowerPC implementations */
gen_spr_generic(env);
spr_register(env, SPR_PVR, "PVR",
- SPR_NOACCESS, SPR_NOACCESS,
+ /* Linux permits userspace to read PVR */
+#if defined(CONFIG_LINUX_USER)
+ &spr_read_generic,
+#else
+ SPR_NOACCESS,
+#endif
+ SPR_NOACCESS,
&spr_read_generic, SPR_NOACCESS,
def->pvr);
/* Register SVR if it's defined to anything else than POWERPC_SVR_NONE */