target/ppc: add helper to write per-LPAR SPRs

An SPR can be either per-thread, per-core, or per-LPAR. Per-LPAR means
per-thread or per-core, depending on 1LPAR mode.

Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

diff --git a/target/ppc/spr_common.h b/target/ppc/spr_common.h
index 9e40b3b608f29cb67978d380fbbdebc11ae3df63..85f73b860bc5fee730ee94b98e7bf081bccf86c0 100644 (file)
--- a/target/ppc/spr_common.h
+++ b/target/ppc/spr_common.h
@@ -83,6 +83,8 @@ void spr_read_generic(DisasContext *ctx, int gprn, int sprn);
 void spr_write_generic(DisasContext *ctx, int sprn, int gprn);
 void spr_write_generic32(DisasContext *ctx, int sprn, int gprn);
 void spr_core_write_generic(DisasContext *ctx, int sprn, int gprn);
+void spr_core_write_generic32(DisasContext *ctx, int sprn, int gprn);
+void spr_core_lpar_write_generic(DisasContext *ctx, int sprn, int gprn);
 void spr_write_MMCR0(DisasContext *ctx, int sprn, int gprn);
 void spr_write_MMCR1(DisasContext *ctx, int sprn, int gprn);
 void spr_write_MMCRA(DisasContext *ctx, int sprn, int gprn);

diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index fb05047d95c2bc493e1b2b91666c88ade8fb7f91..7b525020ef7847a4372b6989405157017ef1c4c8 100644 (file)
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -473,6 +473,34 @@ void spr_core_write_generic(DisasContext *ctx, int sprn, int gprn)
     spr_store_dump_spr(sprn);
 }
 
+void spr_core_write_generic32(DisasContext *ctx, int sprn, int gprn)
+{
+    TCGv t0;
+
+    if (!(ctx->flags & POWERPC_FLAG_SMT)) {
+        spr_write_generic32(ctx, sprn, gprn);
+        return;
+    }
+
+    if (!gen_serialize(ctx)) {
+        return;
+    }
+
+    t0 = tcg_temp_new();
+    tcg_gen_ext32u_tl(t0, cpu_gpr[gprn]);
+    gen_helper_spr_core_write_generic(tcg_env, tcg_constant_i32(sprn), t0);
+    spr_store_dump_spr(sprn);
+}
+
+void spr_core_lpar_write_generic(DisasContext *ctx, int sprn, int gprn)
+{
+    if (ctx->flags & POWERPC_FLAG_SMT_1LPAR) {
+        spr_core_write_generic(ctx, sprn, gprn);
+    } else {
+        spr_write_generic(ctx, sprn, gprn);
+    }
+}
+
 static void spr_write_CTRL_ST(DisasContext *ctx, int sprn, int gprn)
 {
     /* This does not implement >1 thread */