From: Matheus Ferst <matheus.fe...@eldorado.org.br>
Implements the following PowerISA v3.1 instructions:
setbc: Set Boolean Condition
setbcr: Set Boolean Condition Reverse
setnbc: Set Negative Boolean Condition
setnbcr: Set Negative Boolean Condition Reverse
Signed-off-by: Matheus Ferst <matheus.fe...@eldorado.org.br>
---
target/ppc/insn32.decode | 10 ++++++++++
target/ppc/translate/fixedpoint-impl.c.inc | 21 +++++++++++++++++++++
2 files changed, 31 insertions(+)
diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode
index 8460100177..d69c0bc14c 100644
--- a/target/ppc/insn32.decode
+++ b/target/ppc/insn32.decode
@@ -26,6 +26,9 @@
&X rt ra rb
@X ...... rt:5 ra:5 rb:5 .......... . &X
+&X_bi rt bi
+@X_bi ...... rt:5 bi:5 ----- .......... - &X_bi
+
### Fixed-Point Load Instructions
LBZ 100010 ..... ..... ................ @D
@@ -83,3 +86,10 @@ STDUX 011111 ..... ..... ..... 0010110101 - @X
ADDI 001110 ..... ..... ................ @D
ADDIS 001111 ..... ..... ................ @D
+
+### Move To/From System Register Instructions
+
+SETBC 011111 ..... ..... ----- 0110000000 - @X_bi
+SETBCR 011111 ..... ..... ----- 0110100000 - @X_bi
+SETNBC 011111 ..... ..... ----- 0111000000 - @X_bi
+SETNBCR 011111 ..... ..... ----- 0111100000 - @X_bi
diff --git a/target/ppc/translate/fixedpoint-impl.c.inc
b/target/ppc/translate/fixedpoint-impl.c.inc
index 04a974214f..37dd25148c 100644
--- a/target/ppc/translate/fixedpoint-impl.c.inc
+++ b/target/ppc/translate/fixedpoint-impl.c.inc
@@ -201,3 +201,24 @@ static bool trans_PNOP(DisasContext *ctx, arg_PNOP *a)
}
return true;
}
+
+static bool do_set_bool_cond(DisasContext *ctx, arg_X_bi *a, bool neg, bool
rev)
+{
+ REQUIRE_INSNS_FLAGS2(ctx, ISA310);
+ uint32_t mask = 0x08 >> (a->bi & 0x03);
+ TCGv temp = tcg_temp_new();
+
+ tcg_gen_extu_i32_tl(temp, cpu_crf[a->bi >> 2]);
+ tcg_gen_andi_tl(temp, temp, mask);
+ tcg_gen_movcond_tl(a->r?TCG_COND_EQ:TCG_COND_NE, cpu_gpr[a->rt], temp,
+ tcg_constant_tl(0), tcg_constant_tl(a->n?-1:1),
+ tcg_constant_tl(0));
+ tcg_temp_free(temp);
+
+ return true;
+}
+
+TRANS(SETBC, do_set_bool_cond, false, false)
+TRANS(SETBCR, do_set_bool_cond, false, true)
+TRANS(SETNBC, do_set_bool_cond, true, false)
+TRANS(SETNBCR, do_set_bool_cond, true, true)
--
2.25.1
