Signed-off-by: Michael Rolnik <mrol...@gmail.com>
---
target-arc/translate-inst.c | 165 ++++++++++++++++++++++++++++++++++++++++++++
target-arc/translate-inst.h | 8 +++
2 files changed, 173 insertions(+)
diff --git a/target-arc/translate-inst.c b/target-arc/translate-inst.c
index 50119bf..7389e5c 100644
--- a/target-arc/translate-inst.c
+++ b/target-arc/translate-inst.c
@@ -66,6 +66,44 @@ static void gen_add_Vf(TCGv dest, TCGv src1, TCGv src2)
tcg_temp_free_i32(t1);
}
+static void gen_sub_Cf(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t1 = tcg_temp_new_i32();
+ TCGv t2 = tcg_temp_new_i32();
+ TCGv t3 = tcg_temp_new_i32();
+
+ tcg_gen_not_tl(t1, src1); /* t1 = ~src1 */
+ tcg_gen_and_tl(t2, t1, src2); /* t2 = ~src1 & src2 */
+ tcg_gen_or_tl(t3, t1, src2); /* t3 = (~src1 | src2) & dest */
+ tcg_gen_and_tl(t3, t3, dest);
+ tcg_gen_or_tl(t2, t2, t3); /* t2 = ~src1 & src2
+ | ~src1 & dest
+ | dest & src2 */
+ tcg_gen_shri_tl(cpu_Cf, t2, 31);/* Cf = t2(31) */
+
+ tcg_temp_free_i32(t3);
+ tcg_temp_free_i32(t2);
+ tcg_temp_free_i32(t1);
+}
+
+static void gen_sub_Vf(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t1 = tcg_temp_new_i32();
+ TCGv t2 = tcg_temp_new_i32();
+
+ /*
+ t1 = src1 & ~src2 & ~dest
+ | ~src1 & src2 & dest
+ = (src1 ^ dest) & (src1 ^ dest)*/
+ tcg_gen_xor_tl(t1, src1, dest);
+ tcg_gen_xor_tl(t2, src1, src2);
+ tcg_gen_and_tl(t1, t1, t2);
+ tcg_gen_shri_tl(cpu_Vf, t1, 31);/* Vf = t1(31) */
+
+ tcg_temp_free_i32(t2);
+ tcg_temp_free_i32(t1);
+}
+
/*
ADC
*/
@@ -168,3 +206,130 @@ int arc_gen_ADD3(DisasCtxt *ctx, TCGv dest, TCGv src1,
TCGv src2)
return BS_NONE;
}
+/*
+ SUB
+*/
+int arc_gen_SUB(DisasCtxt *ctx, TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv rslt = dest;
+
+ if (TCGV_EQUAL(dest, src1) || TCGV_EQUAL(dest, src2)) {
+ rslt = tcg_temp_new_i32();
+ }
+
+ tcg_gen_sub_tl(rslt, src1, src2);
+
+ if (ctx->opt.f) {
+ tcg_gen_setcond_tl(TCG_COND_EQ, cpu_Zf, rslt, ctx->zero);
+ tcg_gen_shri_tl(cpu_Nf, rslt, 31);
+ gen_sub_Cf(rslt, src1, src2);
+ gen_sub_Vf(rslt, src1, src2);
+ }
+
+ if (!TCGV_EQUAL(dest, rslt)) {
+ tcg_gen_mov_tl(dest, rslt);
+ tcg_temp_free_i32(rslt);
+ }
+
+ return BS_NONE;
+}
+
+/*
+ SBC
+*/
+int arc_gen_SBC(DisasCtxt *ctx, TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv rslt = dest;
+
+ if (TCGV_EQUAL(dest, src1) || TCGV_EQUAL(dest, src2)) {
+ rslt = tcg_temp_new_i32();
+ }
+
+ tcg_gen_sub_tl(rslt, src1, src2);
+ tcg_gen_sub_tl(rslt, rslt, cpu_Cf);
+
+ if (ctx->opt.f) {
+ tcg_gen_setcond_tl(TCG_COND_EQ, cpu_Zf, rslt, ctx->zero);
+ tcg_gen_shri_tl(cpu_Nf, rslt, 31);
+ gen_sub_Cf(rslt, src1, src2);
+ gen_sub_Vf(rslt, src1, src2);
+ }
+
+ if (!TCGV_EQUAL(dest, rslt)) {
+ tcg_gen_mov_tl(dest, rslt);
+ tcg_temp_free_i32(rslt);
+ }
+
+ return BS_NONE;
+}
+/*
+ SUB1
+*/
+int arc_gen_SUB1(DisasCtxt *ctx, TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new_i32();
+
+ tcg_gen_shli_tl(t0, src2, 1);
+ arc_gen_SUB(ctx, dest, src1, t0);
+
+ tcg_temp_free_i32(t0);
+
+ return BS_NONE;
+}
+
+/*
+ SUB2
+*/
+int arc_gen_SUB2(DisasCtxt *ctx, TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new_i32();
+
+ tcg_gen_shli_tl(t0, src2, 2);
+ arc_gen_SUB(ctx, dest, src1, t0);
+
+ tcg_temp_free_i32(t0);
+
+ return BS_NONE;
+}
+
+/*
+ SUB3
+*/
+int arc_gen_SUB3(DisasCtxt *ctx, TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new_i32();
+
+ tcg_gen_shli_tl(t0, src2, 3);
+ arc_gen_SUB(ctx, dest, src1, t0);
+
+ tcg_temp_free_i32(t0);
+
+ return BS_NONE;
+}
+
+/*
+ RSUB
+*/
+int arc_gen_RSUB(DisasCtxt *ctx, TCGv dest, TCGv src1, TCGv src2)
+{
+ return arc_gen_SUB(ctx, dest, src2, src1);
+}
+
+/*
+ CMP
+*/
+int arc_gen_CMP(DisasCtxt *ctx, TCGv src1, TCGv src2)
+{
+ TCGv rslt = tcg_temp_new_i32();
+
+ tcg_gen_sub_tl(rslt, src1, src2);
+
+ tcg_gen_setcond_tl(TCG_COND_EQ, cpu_Zf, rslt, ctx->zero);
+ tcg_gen_shri_tl(cpu_Nf, rslt, 31);
+ gen_sub_Cf(rslt, src1, src2);
+ gen_sub_Vf(rslt, src1, src2);
+
+ tcg_temp_free_i32(rslt);
+
+ return BS_NONE;
+}
diff --git a/target-arc/translate-inst.h b/target-arc/translate-inst.h
index 08e23c7..40ed8a0 100644
--- a/target-arc/translate-inst.h
+++ b/target-arc/translate-inst.h
@@ -28,3 +28,11 @@ int arc_gen_ADD1(DisasCtxt *c, TCGv dest, TCGv src1, TCGv
src2);
int arc_gen_ADD2(DisasCtxt *c, TCGv dest, TCGv src1, TCGv src2);
int arc_gen_ADD3(DisasCtxt *c, TCGv dest, TCGv src1, TCGv src2);
+int arc_gen_SUB(DisasCtxt *c, TCGv dest, TCGv src1, TCGv src2);
+int arc_gen_SUB1(DisasCtxt *c, TCGv dest, TCGv src1, TCGv src2);
+int arc_gen_SUB2(DisasCtxt *c, TCGv dest, TCGv src1, TCGv src2);
+int arc_gen_SUB3(DisasCtxt *c, TCGv dest, TCGv src1, TCGv src2);
+int arc_gen_SBC(DisasCtxt *c, TCGv dest, TCGv src1, TCGv src2);
+int arc_gen_RSUB(DisasCtxt *c, TCGv dest, TCGv src1, TCGv src2);
+int arc_gen_CMP(DisasCtxt *c, TCGv src1, TCGv src2);
+
--
2.4.9 (Apple Git-60)
