From 20c9f095c4536e64e60432a5c72fce38e8306cbb Mon Sep 17 00:00:00 2001
From: blueswir1 <blueswir1@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Fri, 25 May 2007 18:50:28 +0000
Subject: Implement Sparc64 CPU timers using ptimers

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2860 c046a42c-6fe2-441c-8c8c-71466251a162
---
 target-sparc/cpu.h       |  5 +++++
 target-sparc/op.c        | 30 ++++++++++++++++++++++++++++--
 target-sparc/op_helper.c | 17 +++++++++++++++++
 target-sparc/translate.c | 13 ++++++++-----
 4 files changed, 58 insertions(+), 7 deletions(-)

(limited to 'target-sparc')

diff --git a/target-sparc/cpu.h b/target-sparc/cpu.h
index b067d7b9bd..c5ccd28a82 100644
--- a/target-sparc/cpu.h
+++ b/target-sparc/cpu.h
@@ -226,10 +226,12 @@ typedef struct CPUSPARCState {
     uint64_t mgregs[8]; /* mmu general registers */
     uint64_t fprs;
     uint64_t tick_cmpr, stick_cmpr;
+    void *tick, *stick;
     uint64_t gsr;
     uint32_t gl; // UA2005
     /* UA 2005 hyperprivileged registers */
     uint64_t hpstate, htstate[MAXTL], hintp, htba, hver, hstick_cmpr, ssr;
+    void *hstick; // UA 2005
 #endif
 #if !defined(TARGET_SPARC64) && !defined(reg_T2)
     target_ulong t2;
@@ -292,6 +294,9 @@ int cpu_sparc_signal_handler(int host_signum, void *pinfo, void *puc);
 void raise_exception(int tt);
 void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec,
                           int is_asi);
+void do_tick_set_count(void *opaque, uint64_t count);
+uint64_t do_tick_get_count(void *opaque);
+void do_tick_set_limit(void *opaque, uint64_t limit);
 
 #include "cpu-all.h"
 
diff --git a/target-sparc/op.c b/target-sparc/op.c
index 5fbbd6db0f..c0aee8f4ac 100644
--- a/target-sparc/op.c
+++ b/target-sparc/op.c
@@ -1096,12 +1096,38 @@ void OPPROTO op_wrccr(void)
 
 void OPPROTO op_rdtick(void)
 {
-    T0 = 0; // XXX read cycle counter and bit 31
+    T0 = do_tick_get_count(env->tick);
 }
 
 void OPPROTO op_wrtick(void)
 {
-    T0 = 0; // XXX write cycle counter and bit 31
+    do_tick_set_count(env->tick, T0);
+}
+
+void OPPROTO op_wrtick_cmpr(void)
+{
+    do_tick_set_limit(env->tick, T0);
+}
+
+void OPPROTO op_rdstick(void)
+{
+    T0 = do_tick_get_count(env->stick);
+}
+
+void OPPROTO op_wrstick(void)
+{
+    do_tick_set_count(env->stick, T0);
+    do_tick_set_count(env->hstick, T0);
+}
+
+void OPPROTO op_wrstick_cmpr(void)
+{
+    do_tick_set_limit(env->stick, T0);
+}
+
+void OPPROTO op_wrhstick_cmpr(void)
+{
+    do_tick_set_limit(env->hstick, T0);
 }
 
 void OPPROTO op_rdtpc(void)
diff --git a/target-sparc/op_helper.c b/target-sparc/op_helper.c
index 93f61a8025..b2f982f4ee 100644
--- a/target-sparc/op_helper.c
+++ b/target-sparc/op_helper.c
@@ -1133,3 +1133,20 @@ void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec,
     raise_exception(TT_DATA_ACCESS);
 }
 #endif
+
+#ifdef TARGET_SPARC64
+void do_tick_set_count(void *opaque, uint64_t count)
+{
+    ptimer_set_count(opaque, -count);
+}
+
+uint64_t do_tick_get_count(void *opaque)
+{
+    return -ptimer_get_count(opaque);
+}
+
+void do_tick_set_limit(void *opaque, uint64_t limit)
+{
+    ptimer_set_limit(opaque, -limit, 0);
+}
+#endif
diff --git a/target-sparc/translate.c b/target-sparc/translate.c
index 38d2a13195..8dbe3370fe 100644
--- a/target-sparc/translate.c
+++ b/target-sparc/translate.c
@@ -1202,7 +1202,7 @@ static void disas_sparc_insn(DisasContext * dc)
                     gen_movl_T0_reg(rd);
                     break;
 		case 0x18: /* System tick */
-                    gen_op_rdtick(); // XXX
+                    gen_op_rdstick();
                     gen_movl_T0_reg(rd);
                     break;
 		case 0x19: /* System tick compare */
@@ -1991,21 +1991,23 @@ static void disas_sparc_insn(DisasContext * dc)
 				if (!supervisor(dc))
 				    goto illegal_insn;
 #endif
-				gen_op_movtl_env_T0(offsetof(CPUSPARCState, tick_cmpr));
+                                gen_op_movtl_env_T0(offsetof(CPUSPARCState, tick_cmpr));
+                                gen_op_wrtick_cmpr();
 				break;
 			    case 0x18: /* System tick */
 #if !defined(CONFIG_USER_ONLY)
 				if (!supervisor(dc))
 				    goto illegal_insn;
 #endif
-				gen_op_movtl_env_T0(offsetof(CPUSPARCState, stick_cmpr));
+                                gen_op_wrstick();
 				break;
 			    case 0x19: /* System tick compare */
 #if !defined(CONFIG_USER_ONLY)
 				if (!supervisor(dc))
 				    goto illegal_insn;
 #endif
-				gen_op_movtl_env_T0(offsetof(CPUSPARCState, stick_cmpr));
+                                gen_op_movtl_env_T0(offsetof(CPUSPARCState, stick_cmpr));
+                                gen_op_wrstick_cmpr();
 				break;
 
 			    case 0x10: /* Performance Control */
@@ -2155,7 +2157,8 @@ static void disas_sparc_insn(DisasContext * dc)
                                 gen_op_movl_env_T0(offsetof(CPUSPARCState, htba));
                                 break;
                             case 31: // hstick_cmpr
-                                gen_op_movl_env_T0(offsetof(CPUSPARCState, hstick_cmpr));
+                                gen_op_movtl_env_T0(offsetof(CPUSPARCState, hstick_cmpr));
+                                gen_op_wrhstick_cmpr();
                                 break;
                             case 6: // hver readonly
                             default:
-- 
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