From bc725e65152c57d42f19eec134c99940114d6362 Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Tue, 9 Apr 2019 23:26:47 +0200 Subject: [PATCH] s390x/tcg: Implement VECTOR SUBTRACT WITH BORROW COMPUTE BORROW INDICATION Mostly courtesy of Richard H. Reviewed-by: Richard Henderson Signed-off-by: David Hildenbrand --- target/s390x/insn-data.def | 2 ++ target/s390x/translate_vx.inc.c | 34 +++++++++++++++++++++++++++++++++ 2 files changed, 36 insertions(+) diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def index a60d8531dc..a8d90517f6 100644 --- a/target/s390x/insn-data.def +++ b/target/s390x/insn-data.def @@ -1180,6 +1180,8 @@ F(0xe7f5, VSCBI, VRR_c, V, 0, 0, 0, 0, vscbi, 0, IF_VEC) /* VECTOR SUBTRACT WITH BORROW INDICATION */ F(0xe7bf, VSBI, VRR_d, V, 0, 0, 0, 0, vsbi, 0, IF_VEC) +/* VECTOR SUBTRACT WITH BORROW COMPUTE BORROW INDICATION */ + F(0xe7bd, VSBCBI, VRR_d, V, 0, 0, 0, 0, vsbcbi, 0, IF_VEC) #ifndef CONFIG_USER_ONLY /* COMPARE AND SWAP AND PURGE */ diff --git a/target/s390x/translate_vx.inc.c b/target/s390x/translate_vx.inc.c index 66a938a909..85cd5f03b3 100644 --- a/target/s390x/translate_vx.inc.c +++ b/target/s390x/translate_vx.inc.c @@ -2218,3 +2218,37 @@ static DisasJumpType op_vsbi(DisasContext *s, DisasOps *o) get_field(s->fields, v4)); return DISAS_NEXT; } + +static void gen_sbcbi2_i64(TCGv_i64 dl, TCGv_i64 dh, TCGv_i64 al, TCGv_i64 ah, + TCGv_i64 bl, TCGv_i64 bh, TCGv_i64 cl, TCGv_i64 ch) +{ + TCGv_i64 th = tcg_temp_new_i64(); + TCGv_i64 tl = tcg_temp_new_i64(); + TCGv_i64 zero = tcg_const_i64(0); + + tcg_gen_andi_i64(tl, cl, 1); + tcg_gen_sub2_i64(tl, th, al, zero, tl, zero); + tcg_gen_sub2_i64(tl, th, tl, th, bl, zero); + tcg_gen_andi_i64(th, th, 1); + tcg_gen_sub2_i64(tl, th, ah, zero, th, zero); + tcg_gen_sub2_i64(tl, th, tl, th, bh, zero); + tcg_gen_andi_i64(dl, th, 1); + tcg_gen_mov_i64(dh, zero); + + tcg_temp_free_i64(tl); + tcg_temp_free_i64(th); + tcg_temp_free_i64(zero); +} + +static DisasJumpType op_vsbcbi(DisasContext *s, DisasOps *o) +{ + if (get_field(s->fields, m5) != ES_128) { + gen_program_exception(s, PGM_SPECIFICATION); + return DISAS_NORETURN; + } + + gen_gvec128_4_i64(gen_sbcbi2_i64, get_field(s->fields, v1), + get_field(s->fields, v2), get_field(s->fields, v3), + get_field(s->fields, v4)); + return DISAS_NEXT; +}