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authorDavid Gibson <david@gibson.dropbear.id.au>2011-04-01 15:15:12 +1100
committerAlexander Graf <agraf@suse.de>2011-04-01 18:34:54 +0200
commit3a7f009abc010827815f10805e3558aa64c98e59 (patch)
tree9dba5eae0819290f47588d4f5a225ae681f04312
parentefdef95fee7e150ac065e7b33ffbebd09a5ac83c (diff)
Implement missing parts of the logic for the POWER PURR
The PURR (Processor Utilization Resource Register) is a register found on recent POWER CPUs. The guts of implementing it at least enough to get by are already present in qemu, however some of the helper functions needed to actually wire it up are missing. This patch adds the necessary glue, so that the PURR can be wired up when we implement newer POWER CPU targets which include it. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
-rw-r--r--target-ppc/helper.h1
-rw-r--r--target-ppc/op_helper.c7
-rw-r--r--target-ppc/translate_init.c8
3 files changed, 16 insertions, 0 deletions
diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index 1a69cf876c..2b4744d331 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -376,6 +376,7 @@ DEF_HELPER_0(load_601_rtcu, tl)
#if !defined(CONFIG_USER_ONLY)
#if defined(TARGET_PPC64)
DEF_HELPER_1(store_asr, void, tl)
+DEF_HELPER_0(load_purr, tl)
#endif
DEF_HELPER_1(store_sdr1, void, tl)
DEF_HELPER_1(store_tbl, void, tl)
diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c
index bdb1f1732a..aa2e8ba415 100644
--- a/target-ppc/op_helper.c
+++ b/target-ppc/op_helper.c
@@ -86,6 +86,13 @@ target_ulong helper_load_atbu (void)
return cpu_ppc_load_atbu(env);
}
+#if defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY)
+target_ulong helper_load_purr (void)
+{
+ return (target_ulong)cpu_ppc_load_purr(env);
+}
+#endif
+
target_ulong helper_load_601_rtcl (void)
{
return cpu_ppc601_load_rtcl(env);
diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index 7c08b1cb09..bca85d5073 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -251,6 +251,14 @@ static void spr_write_atbu (void *opaque, int sprn, int gprn)
{
gen_helper_store_atbu(cpu_gpr[gprn]);
}
+
+#if defined(TARGET_PPC64)
+__attribute__ (( unused ))
+static void spr_read_purr (void *opaque, int gprn, int sprn)
+{
+ gen_helper_load_purr(cpu_gpr[gprn]);
+}
+#endif
#endif
#if !defined(CONFIG_USER_ONLY)