[Qemu-devel] [PULL 07/10] target-tricore: add SYS_RESTORE instruction of the v1.6 ISA

[Bastian Koppelmann <kbastian@mail.uni-paderborn.de>]

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
---
 target-tricore/translate.c       | 10 ++++++++++
 target-tricore/tricore-opcodes.h |  1 +
 2 files changed, 11 insertions(+)

diff --git a/target-tricore/translate.c b/target-tricore/translate.c
index 52f474b..4aea0c6 100644
--- a/target-tricore/translate.c
+++ b/target-tricore/translate.c
@@ -7792,10 +7792,12 @@ static void decode_rrrw_extract_insert(CPUTriCoreState *env, DisasContext *ctx)
 static void decode_sys_interrupts(CPUTriCoreState *env, DisasContext *ctx)
 {
     uint32_t op2;
+    uint32_t r1;
     TCGLabel *l1;
     TCGv tmp;
 
     op2 = MASK_OP_SYS_OP2(ctx->opcode);
+    r1  = MASK_OP_SYS_S1D(ctx->opcode);
 
     switch (op2) {
     case OPC2_32_SYS_DEBUG:
@@ -7844,6 +7846,14 @@ static void decode_sys_interrupts(CPUTriCoreState *env, DisasContext *ctx)
     case OPC2_32_SYS_SVLCX:
         gen_helper_svlcx(cpu_env);
         break;
+    case OPC2_32_SYS_RESTORE:
+        if (tricore_feature(env, TRICORE_FEATURE_16)) {
+            if ((ctx->hflags & TRICORE_HFLAG_KUU) == TRICORE_HFLAG_SM ||
+                (ctx->hflags & TRICORE_HFLAG_KUU) == TRICORE_HFLAG_UM1) {
+                tcg_gen_deposit_tl(cpu_ICR, cpu_ICR, cpu_gpr_d[r1], 8, 1);
+            } /* else raise privilege trap */
+        } /* else raise illegal opcode trap */
+        break;
     case OPC2_32_SYS_TRAPSV:
         /* TODO: raise sticky overflow trap */
         break;
diff --git a/target-tricore/tricore-opcodes.h b/target-tricore/tricore-opcodes.h
index 440c7fe..d1506a9 100644
--- a/target-tricore/tricore-opcodes.h
+++ b/target-tricore/tricore-opcodes.h
@@ -1434,4 +1434,5 @@ enum {
     OPC2_32_SYS_SVLCX                            = 0x08,
     OPC2_32_SYS_TRAPSV                           = 0x15,
     OPC2_32_SYS_TRAPV                            = 0x14,
+    OPC2_32_SYS_RESTORE                          = 0x0e,
 };
-- 
2.4.1