[Qemu-devel] [RFC 27/28] target-xtensa: implement CPENABLE and PRID SRs

[Max Filippov]

Signed-off-by: Max Filippov <address@hidden>
---
 hw/xtensa_sample.c        |    1 +
 target-xtensa/cpu.h       |    2 ++
 target-xtensa/translate.c |    7 +++++++
 3 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/hw/xtensa_sample.c b/hw/xtensa_sample.c
index b1da7e1..797a0c4 100644
--- a/hw/xtensa_sample.c
+++ b/hw/xtensa_sample.c
@@ -18,6 +18,7 @@ static void xtensa_init(ram_addr_t ram_size,
             fprintf(stderr, "Unable to find CPU definition\n");
             exit(1);
         }
+        env->sregs[PRID] = n;
     }
 
     ram_offset = qemu_ram_alloc(NULL, "xtensa.dram", 0x10000);
diff --git a/target-xtensa/cpu.h b/target-xtensa/cpu.h
index f3028a7..dbd3550 100644
--- a/target-xtensa/cpu.h
+++ b/target-xtensa/cpu.h
@@ -118,12 +118,14 @@ enum {
     DEPC = 192,
     EPS2 = 194,
     EXCSAVE1 = 209,
+    CPENABLE = 224,
     INTSET = 226,
     INTCLEAR = 227,
     INTENABLE = 228,
     PS = 230,
     EXCCAUSE = 232,
     CCOUNT = 234,
+    PRID = 235,
     EXCVADDR = 238,
     CCOMPARE = 240,
 };
diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c
index 4df1b57..b72f1cf 100644
--- a/target-xtensa/translate.c
+++ b/target-xtensa/translate.c
@@ -88,12 +88,14 @@ static const char * const sregnames[256] = {
     [EXCSAVE1 + 4] = "EXCSAVE5",
     [EXCSAVE1 + 5] = "EXCSAVE6",
     [EXCSAVE1 + 6] = "EXCSAVE7",
+    [CPENABLE] = "CPENABLE",
     [INTSET] = "INTSET",
     [INTCLEAR] = "INTCLEAR",
     [INTENABLE] = "INTENABLE",
     [PS] = "PS",
     [EXCCAUSE] = "EXCCAUSE",
     [CCOUNT] = "CCOUNT",
+    [PRID] = "PRID",
     [EXCVADDR] = "EXCVADDR",
     [CCOMPARE] = "CCOMPARE0",
     [CCOMPARE + 1] = "CCOMPARE1",
@@ -192,6 +194,10 @@ static void gen_wsr_ps(DisasContext *dc, uint32_t sr, 
TCGv_i32 v)
     gen_check_interrupts(dc);
 }
 
+static void gen_wsr_prid(DisasContext *dc, uint32_t sr, TCGv_i32 v)
+{
+}
+
 static void gen_wsr_ccompare(DisasContext *dc, uint32_t sr, TCGv_i32 v)
 {
     TCGv_i32 id = tcg_const_i32(sr - CCOMPARE);
@@ -210,6 +216,7 @@ static void gen_wsr(DisasContext *dc, uint32_t sr, TCGv_i32 
s)
         [WINDOW_BASE] = gen_wsr_windowbase,
         [WINDOW_START] = gen_wsr_windowstart,
         [PS] = gen_wsr_ps,
+        [PRID] = gen_wsr_prid,
         [CCOMPARE] = gen_wsr_ccompare,
         [CCOMPARE + 1] = gen_wsr_ccompare,
         [CCOMPARE + 2] = gen_wsr_ccompare,
-- 
1.7.3.4