[Qemu-devel] [PATCH v3 06/24] target-ppc: Enable writes to user-privileged PMU registers

[Alexey Kardashevskiy]

This adds spr_write_ureg() helper and uses it for UPMCx and MMCR0 SPRs.

Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
---
 target-ppc/translate_init.c | 25 +++++++++++++++----------
 1 file changed, 15 insertions(+), 10 deletions(-)

diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index 88acf70..595fd3f 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -175,6 +175,11 @@ static void spr_read_ureg (void *opaque, int gprn, int 
sprn)
     gen_load_spr(cpu_gpr[gprn], sprn + 0x10);
 }
 
+static void spr_write_ureg(void *opaque, int gprn, int sprn)
+{
+    gen_store_spr(sprn + 0x10, cpu_gpr[gprn]);
+}
+
 /* SPR common to all non-embedded PowerPC */
 /* DECR */
 #if !defined(CONFIG_USER_ONLY)
@@ -7379,28 +7384,28 @@ static void gen_spr_book3s_pmu(CPUPPCState *env)
                  &spr_read_generic, SPR_NOACCESS,
                  0x00000000);
     spr_register(env, SPR_POWER_UMMCR0, "UMMCR0",
-                 &spr_read_ureg, SPR_NOACCESS,
-                 &spr_read_ureg, SPR_NOACCESS,
+                 &spr_read_ureg, &spr_write_ureg,
+                 &spr_read_ureg, &spr_write_ureg,
                  0x00000000);
     spr_register(env, SPR_POWER_UMMCR1, "UMMCR1",
                  &spr_read_ureg, SPR_NOACCESS,
                  &spr_read_ureg, SPR_NOACCESS,
                  0x00000000);
     spr_register(env, SPR_POWER_UPMC1, "UPMC1",
-                 &spr_read_ureg, SPR_NOACCESS,
-                 &spr_read_ureg, SPR_NOACCESS,
+                 &spr_read_ureg, &spr_write_ureg,
+                 &spr_read_ureg, &spr_write_ureg,
                  0x00000000);
     spr_register(env, SPR_POWER_UPMC2, "UPMC2",
-                 &spr_read_ureg, SPR_NOACCESS,
-                 &spr_read_ureg, SPR_NOACCESS,
+                 &spr_read_ureg, &spr_write_ureg,
+                 &spr_read_ureg, &spr_write_ureg,
                  0x00000000);
     spr_register(env, SPR_POWER_UPMC3, "UPMC3",
-                 &spr_read_ureg, SPR_NOACCESS,
-                 &spr_read_ureg, SPR_NOACCESS,
+                 &spr_read_ureg, &spr_write_ureg,
+                 &spr_read_ureg, &spr_write_ureg,
                  0x00000000);
     spr_register(env, SPR_POWER_UPMC4, "UPMC4",
-                 &spr_read_ureg, SPR_NOACCESS,
-                 &spr_read_ureg, SPR_NOACCESS,
+                 &spr_read_ureg, &spr_write_ureg,
+                 &spr_read_ureg, &spr_write_ureg,
                  0x00000000);
     spr_register(env, SPR_POWER_USIAR, "USIAR",
                  &spr_read_ureg, SPR_NOACCESS,
-- 
1.8.4.rc4