From af9e5a04ea63b7ebbe7af2bb3553dc0e8a158d12 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Wed, 22 Aug 2012 11:43:06 -0700 Subject: [PATCH] target-s390: Convert MVC The code that was in gen_op_mvc was a bit confused wrt what lengths it wanted to handle. I also disbelieve that the inline memset is worthwhile. Signed-off-by: Richard Henderson --- target-s390x/insn-data.def | 1 + target-s390x/translate.c | 177 ++----------------------------------- 2 files changed, 10 insertions(+), 168 deletions(-) diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def index 4d7f862e29..a8056a87c9 100644 --- a/target-s390x/insn-data.def +++ b/target-s390x/insn-data.def @@ -286,6 +286,7 @@ C(0xeb9a, LAMY, RSY_a, LD, 0, a2, 0, 0, lam, 0) /* MOVE */ + C(0xd200, MVC, SS_a, Z, la1, a2, 0, 0, mvc, 0) C(0xe544, MVHHI, SIL, GIE, la1, i2, 0, m1_16, mov2, 0) C(0xe54c, MVHI, SIL, GIE, la1, i2, 0, m1_32, mov2, 0) C(0xe548, MVGHI, SIL, GIE, la1, i2, 0, m1_64, mov2, 0) diff --git a/target-s390x/translate.c b/target-s390x/translate.c index 38eeeadf7f..294cb92fe2 100644 --- a/target-s390x/translate.c +++ b/target-s390x/translate.c @@ -1012,170 +1012,6 @@ static void free_compare(DisasCompare *c) } } -static void gen_op_mvc(DisasContext *s, int l, TCGv_i64 s1, TCGv_i64 s2) -{ - TCGv_i64 tmp, tmp2; - int i; - int l_memset = gen_new_label(); - int l_out = gen_new_label(); - TCGv_i64 dest = tcg_temp_local_new_i64(); - TCGv_i64 src = tcg_temp_local_new_i64(); - TCGv_i32 vl; - - /* Find out if we should use the inline version of mvc */ - switch (l) { - case 0: - case 1: - case 2: - case 3: - case 4: - case 5: - case 6: - case 7: - case 11: - case 15: - /* use inline */ - break; - default: - /* Fall back to helper */ - vl = tcg_const_i32(l); - potential_page_fault(s); - gen_helper_mvc(cpu_env, vl, s1, s2); - tcg_temp_free_i32(vl); - return; - } - - tcg_gen_mov_i64(dest, s1); - tcg_gen_mov_i64(src, s2); - - if (!(s->tb->flags & FLAG_MASK_64)) { - /* XXX what if we overflow while moving? */ - tcg_gen_andi_i64(dest, dest, 0x7fffffffUL); - tcg_gen_andi_i64(src, src, 0x7fffffffUL); - } - - tmp = tcg_temp_new_i64(); - tcg_gen_addi_i64(tmp, src, 1); - tcg_gen_brcond_i64(TCG_COND_EQ, dest, tmp, l_memset); - tcg_temp_free_i64(tmp); - - switch (l) { - case 0: - tmp = tcg_temp_new_i64(); - - tcg_gen_qemu_ld8u(tmp, src, get_mem_index(s)); - tcg_gen_qemu_st8(tmp, dest, get_mem_index(s)); - - tcg_temp_free_i64(tmp); - break; - case 1: - tmp = tcg_temp_new_i64(); - - tcg_gen_qemu_ld16u(tmp, src, get_mem_index(s)); - tcg_gen_qemu_st16(tmp, dest, get_mem_index(s)); - - tcg_temp_free_i64(tmp); - break; - case 3: - tmp = tcg_temp_new_i64(); - - tcg_gen_qemu_ld32u(tmp, src, get_mem_index(s)); - tcg_gen_qemu_st32(tmp, dest, get_mem_index(s)); - - tcg_temp_free_i64(tmp); - break; - case 4: - tmp = tcg_temp_new_i64(); - tmp2 = tcg_temp_new_i64(); - - tcg_gen_qemu_ld32u(tmp, src, get_mem_index(s)); - tcg_gen_addi_i64(src, src, 4); - tcg_gen_qemu_ld8u(tmp2, src, get_mem_index(s)); - tcg_gen_qemu_st32(tmp, dest, get_mem_index(s)); - tcg_gen_addi_i64(dest, dest, 4); - tcg_gen_qemu_st8(tmp2, dest, get_mem_index(s)); - - tcg_temp_free_i64(tmp); - tcg_temp_free_i64(tmp2); - break; - case 7: - tmp = tcg_temp_new_i64(); - - tcg_gen_qemu_ld64(tmp, src, get_mem_index(s)); - tcg_gen_qemu_st64(tmp, dest, get_mem_index(s)); - - tcg_temp_free_i64(tmp); - break; - default: - /* The inline version can become too big for too uneven numbers, only - use it on known good lengths */ - tmp = tcg_temp_new_i64(); - tmp2 = tcg_const_i64(8); - for (i = 0; (i + 7) <= l; i += 8) { - tcg_gen_qemu_ld64(tmp, src, get_mem_index(s)); - tcg_gen_qemu_st64(tmp, dest, get_mem_index(s)); - - tcg_gen_add_i64(src, src, tmp2); - tcg_gen_add_i64(dest, dest, tmp2); - } - - tcg_temp_free_i64(tmp2); - tmp2 = tcg_const_i64(1); - - for (; i <= l; i++) { - tcg_gen_qemu_ld8u(tmp, src, get_mem_index(s)); - tcg_gen_qemu_st8(tmp, dest, get_mem_index(s)); - - tcg_gen_add_i64(src, src, tmp2); - tcg_gen_add_i64(dest, dest, tmp2); - } - - tcg_temp_free_i64(tmp2); - tcg_temp_free_i64(tmp); - break; - } - - tcg_gen_br(l_out); - - gen_set_label(l_memset); - /* memset case (dest == (src + 1)) */ - - tmp = tcg_temp_new_i64(); - tmp2 = tcg_temp_new_i64(); - /* fill tmp with the byte */ - tcg_gen_qemu_ld8u(tmp, src, get_mem_index(s)); - tcg_gen_shli_i64(tmp2, tmp, 8); - tcg_gen_or_i64(tmp, tmp, tmp2); - tcg_gen_shli_i64(tmp2, tmp, 16); - tcg_gen_or_i64(tmp, tmp, tmp2); - tcg_gen_shli_i64(tmp2, tmp, 32); - tcg_gen_or_i64(tmp, tmp, tmp2); - tcg_temp_free_i64(tmp2); - - tmp2 = tcg_const_i64(8); - - for (i = 0; (i + 7) <= l; i += 8) { - tcg_gen_qemu_st64(tmp, dest, get_mem_index(s)); - tcg_gen_addi_i64(dest, dest, 8); - } - - tcg_temp_free_i64(tmp2); - tmp2 = tcg_const_i64(1); - - for (; i <= l; i++) { - tcg_gen_qemu_st8(tmp, dest, get_mem_index(s)); - tcg_gen_addi_i64(dest, dest, 1); - } - - tcg_temp_free_i64(tmp2); - tcg_temp_free_i64(tmp); - - gen_set_label(l_out); - - tcg_temp_free(dest); - tcg_temp_free(src); -} - static void gen_op_clc(DisasContext *s, int l, TCGv_i64 s1, TCGv_i64 s2) { TCGv_i64 tmp; @@ -2365,7 +2201,6 @@ static void disas_s390_insn(CPUS390XState *env, DisasContext *s) tcg_temp_free_i32(tmp32_1); tcg_temp_free_i32(tmp32_2); break; - case 0xd2: /* MVC D1(L,B1),D2(B2) [SS] */ case 0xd4: /* NC D1(L,B1),D2(B2) [SS] */ case 0xd5: /* CLC D1(L,B1),D2(B2) [SS] */ case 0xd6: /* OC D1(L,B1),D2(B2) [SS] */ @@ -2381,9 +2216,6 @@ static void disas_s390_insn(CPUS390XState *env, DisasContext *s) tmp = get_address(s, 0, b1, d1); tmp2 = get_address(s, 0, b2, d2); switch (opc) { - case 0xd2: - gen_op_mvc(s, (insn >> 32) & 0xff, tmp, tmp2); - break; case 0xd4: potential_page_fault(s); gen_helper_nc(cc_op, cpu_env, vl, tmp, tmp2); @@ -3322,6 +3154,15 @@ static ExitStatus op_movx(DisasContext *s, DisasOps *o) return NO_EXIT; } +static ExitStatus op_mvc(DisasContext *s, DisasOps *o) +{ + TCGv_i32 l = tcg_const_i32(get_field(s->fields, l1)); + potential_page_fault(s); + gen_helper_mvc(cpu_env, l, o->addr1, o->in2); + tcg_temp_free_i32(l); + return NO_EXIT; +} + static ExitStatus op_mvcl(DisasContext *s, DisasOps *o) { TCGv_i32 r1 = tcg_const_i32(get_field(s->fields, r1)); -- GitLab