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authorRonald Hecht <ronald.hecht@gmx.de>2013-02-19 12:45:07 +0100
committerBlue Swirl <blauwirbel@gmail.com>2013-02-23 10:00:43 +0000
commitd1c36ba707637173b818652e51181370d51b6c58 (patch)
tree43480b6285574c951391d9557ce53debe409a441
parent7a0a9c2c64be242d5953d5ce6172976b05f6c14f (diff)
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SPARC LEON power-down support added
Signed-off-by: Ronald Hecht <address@hidden> Signed-off-by: Fabien Chouteau <chouteau@adacore.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
-rw-r--r--target-sparc/cpu.c2
-rw-r--r--target-sparc/cpu.h1
-rw-r--r--target-sparc/helper.c11
-rw-r--r--target-sparc/helper.h1
-rw-r--r--target-sparc/translate.c5
5 files changed, 19 insertions, 1 deletions
diff --git a/target-sparc/cpu.c b/target-sparc/cpu.c
index cc1453e..50def61 100644
--- a/target-sparc/cpu.c
+++ b/target-sparc/cpu.c
@@ -586,7 +586,7 @@ static const sparc_def_t sparc_defs[] = {
.mmu_trcr_mask = 0xffffffff,
.nwindows = 8,
.features = CPU_DEFAULT_FEATURES | CPU_FEATURE_TA0_SHUTDOWN |
- CPU_FEATURE_ASR17 | CPU_FEATURE_CACHE_CTRL,
+ CPU_FEATURE_ASR17 | CPU_FEATURE_CACHE_CTRL | CPU_FEATURE_POWERDOWN,
},
#endif
};
diff --git a/target-sparc/cpu.h b/target-sparc/cpu.h
index 7389b03..a2f2cc8 100644
--- a/target-sparc/cpu.h
+++ b/target-sparc/cpu.h
@@ -270,6 +270,7 @@ typedef struct sparc_def_t {
#define CPU_FEATURE_TA0_SHUTDOWN (1 << 14) /* Shutdown on "ta 0x0" */
#define CPU_FEATURE_ASR17 (1 << 15)
#define CPU_FEATURE_CACHE_CTRL (1 << 16)
+#define CPU_FEATURE_POWERDOWN (1 << 17)
#ifndef TARGET_SPARC64
#define CPU_DEFAULT_FEATURES (CPU_FEATURE_FLOAT | CPU_FEATURE_SWAP | \
diff --git a/target-sparc/helper.c b/target-sparc/helper.c
index 91ecfc7..58e7efe 100644
--- a/target-sparc/helper.c
+++ b/target-sparc/helper.c
@@ -225,3 +225,14 @@ target_ulong helper_tsubcctv(CPUSPARCState *env, target_ulong src1,
cpu_restore_state(env, GETPC());
helper_raise_exception(env, TT_TOVF);
}
+
+#ifndef TARGET_SPARC64
+void helper_power_down(CPUSPARCState *env)
+{
+ env->halted = 1;
+ env->exception_index = EXCP_HLT;
+ env->pc = env->npc;
+ env->npc = env->pc + 4;
+ cpu_loop_exit(env);
+}
+#endif
diff --git a/target-sparc/helper.h b/target-sparc/helper.h
index cfcdab1..15f7328 100644
--- a/target-sparc/helper.h
+++ b/target-sparc/helper.h
@@ -4,6 +4,7 @@
DEF_HELPER_1(rett, void, env)
DEF_HELPER_2(wrpsr, void, env, tl)
DEF_HELPER_1(rdpsr, tl, env)
+DEF_HELPER_1(power_down, void, env)
#else
DEF_HELPER_2(wrpil, void, env, tl)
DEF_HELPER_2(wrpstate, void, env, tl)
diff --git a/target-sparc/translate.c b/target-sparc/translate.c
index ca75e1a..26c2056 100644
--- a/target-sparc/translate.c
+++ b/target-sparc/translate.c
@@ -3642,6 +3642,11 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
in the SPARCv8
manual, nop on the
microSPARC II */
+ if ((rd == 0x13) && (dc->def->features &
+ CPU_FEATURE_POWERDOWN)) {
+ /* LEON3 power-down */
+ gen_helper_power_down(cpu_env);
+ }
break;
#else
case 0x2: /* V9 wrccr */