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[Qemu-devel] [PATCH v3 5/5] SPARC: Add asr17 register support
From: |
Fabien Chouteau |
Subject: |
[Qemu-devel] [PATCH v3 5/5] SPARC: Add asr17 register support |
Date: |
Fri, 21 Jan 2011 18:00:23 +0100 |
This register is activated by CPU_FEATURE_ASR17 in the feature field.
Signed-off-by: Fabien Chouteau <address@hidden>
---
target-sparc/cpu.h | 1 +
target-sparc/helper.c | 3 ++-
target-sparc/translate.c | 11 +++++++++++
3 files changed, 14 insertions(+), 1 deletions(-)
diff --git a/target-sparc/cpu.h b/target-sparc/cpu.h
index 5c50d9e..6f5990b 100644
--- a/target-sparc/cpu.h
+++ b/target-sparc/cpu.h
@@ -267,6 +267,7 @@ typedef struct sparc_def_t {
#define CPU_FEATURE_CMT (1 << 12)
#define CPU_FEATURE_GL (1 << 13)
#define CPU_FEATURE_TA0_SHUTDOWN (1 << 14) /* Shutdown on "ta 0x0" */
+#define CPU_FEATURE_ASR17 (1 << 15)
#ifndef TARGET_SPARC64
#define CPU_DEFAULT_FEATURES (CPU_FEATURE_FLOAT | CPU_FEATURE_SWAP | \
CPU_FEATURE_MUL | CPU_FEATURE_DIV | \
diff --git a/target-sparc/helper.c b/target-sparc/helper.c
index ec6ac27..2f3d1e6 100644
--- a/target-sparc/helper.c
+++ b/target-sparc/helper.c
@@ -1288,7 +1288,8 @@ static const sparc_def_t sparc_defs[] = {
.mmu_sfsr_mask = 0xffffffff,
.mmu_trcr_mask = 0xffffffff,
.nwindows = 8,
- .features = CPU_DEFAULT_FEATURES | CPU_FEATURE_TA0_SHUTDOWN,
+ .features = CPU_DEFAULT_FEATURES | CPU_FEATURE_TA0_SHUTDOWN |
+ CPU_FEATURE_ASR17,
},
#endif
};
diff --git a/target-sparc/translate.c b/target-sparc/translate.c
index dff0f19..e26462e 100644
--- a/target-sparc/translate.c
+++ b/target-sparc/translate.c
@@ -2067,6 +2067,17 @@ static void disas_sparc_insn(DisasContext * dc)
case 0x10 ... 0x1f: /* implementation-dependent in the
SPARCv8 manual, rdy on the
microSPARC II */
+ /* Read Asr17 */
+ if (rs1 == 0x11 && dc->def->features & CPU_FEATURE_ASR17) {
+ TCGv r_const;
+
+ /* Read Asr17 for a Leon3 monoprocessor */
+ r_const = tcg_const_tl((1 << 8)
+ | (dc->def->nwindows - 1));
+ gen_movl_TN_reg(rd, r_const);
+ tcg_temp_free(r_const);
+ break;
+ }
#endif
gen_movl_TN_reg(rd, cpu_y);
break;
--
1.7.1
Re: [Qemu-devel] [PATCH v3 0/5][RFC] New SPARC machine: Leon3, Blue Swirl, 2011/01/21