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[Qemu-devel] [PATCH] SPARC LEON power-down support added
From: |
Ronald Hecht |
Subject: |
[Qemu-devel] [PATCH] SPARC LEON power-down support added |
Date: |
Tue, 18 Sep 2012 14:58:54 +0200 |
Signed-off-by: Ronald Hecht <address@hidden>
---
target-sparc/cpu.c | 2 +-
target-sparc/cpu.h | 1 +
target-sparc/helper.h | 1 +
target-sparc/ldst_helper.c | 9 +++++++++
target-sparc/translate.c | 5 +++++
5 files changed, 17 insertions(+), 1 deletions(-)
diff --git a/target-sparc/cpu.c b/target-sparc/cpu.c
index 0d5abb8..10563c4 100644
--- a/target-sparc/cpu.c
+++ b/target-sparc/cpu.c
@@ -589,7 +589,7 @@ 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 e16b7b3..eadc445 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.h b/target-sparc/helper.h
index e3c7fdd..74ecad1 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/ldst_helper.c b/target-sparc/ldst_helper.c
index 684b73b..bb5016c 100644
--- a/target-sparc/ldst_helper.c
+++ b/target-sparc/ldst_helper.c
@@ -2317,6 +2317,15 @@ void helper_stqf(CPUSPARCState *env, target_ulong addr,
int mem_idx)
#endif
}
+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);
+}
+
#if !defined(CONFIG_USER_ONLY)
#ifndef TARGET_SPARC64
void cpu_unassigned_access(CPUSPARCState *env, target_phys_addr_t addr,
diff --git a/target-sparc/translate.c b/target-sparc/translate.c
index b95f91c..9babaa8 100644
--- a/target-sparc/translate.c
+++ b/target-sparc/translate.c
@@ -3671,6 +3671,11 @@ 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 */
--
1.7.2.5
- [Qemu-devel] [PATCH] SPARC LEON power-down support added,
Ronald Hecht <=