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target-mips: use the new rotr/rotri instructions 

Acked-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5622 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-11-04 19:13:47 +00:00
parent ea0f49a74d
commit e00fcff710
1 changed files with 5 additions and 43 deletions
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48
target-mips/translate.c
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@ -1455,17 +1455,11 @@ static void gen_arith_imm (CPUState *env, DisasContext *ctx, uint32_t opc,
if (env->insn_flags & ISA_MIPS32R2) {
if (uimm != 0) {
TCGv r_tmp1 = tcg_temp_new(TCG_TYPE_I32);
TCGv r_tmp2 = tcg_temp_new(TCG_TYPE_I32);
tcg_gen_trunc_tl_i32(r_tmp1, t0);
tcg_gen_movi_i32(r_tmp2, 0x20);
tcg_gen_subi_i32(r_tmp2, r_tmp2, uimm);
tcg_gen_shl_i32(r_tmp2, r_tmp1, r_tmp2);
tcg_gen_shri_i32(r_tmp1, r_tmp1, uimm);
tcg_gen_or_i32(r_tmp1, r_tmp1, r_tmp2);
tcg_gen_rotri_i32(r_tmp1, r_tmp1, uimm);
tcg_gen_ext_i32_tl(t0, r_tmp1);
tcg_temp_free(r_tmp1);
tcg_temp_free(r_tmp2);
}
opn = "rotr";
} else {
@ -1500,14 +1494,7 @@ static void gen_arith_imm (CPUState *env, DisasContext *ctx, uint32_t opc,
/* drotr is decoded as dsrl on non-R2 CPUs */
if (env->insn_flags & ISA_MIPS32R2) {
if (uimm != 0) {
TCGv r_tmp1 = tcg_temp_new(TCG_TYPE_TL);
tcg_gen_movi_tl(r_tmp1, 0x40);
tcg_gen_subi_tl(r_tmp1, r_tmp1, uimm);
tcg_gen_shl_tl(r_tmp1, t0, r_tmp1);
tcg_gen_shri_tl(t0, t0, uimm);
tcg_gen_or_tl(t0, t0, r_tmp1);
tcg_temp_free(r_tmp1);
tcg_gen_rotri_tl(t0, t0, uimm);
}
opn = "drotr";
} else {
@ -1538,18 +1525,7 @@ static void gen_arith_imm (CPUState *env, DisasContext *ctx, uint32_t opc,
case 1:
/* drotr32 is decoded as dsrl32 on non-R2 CPUs */
if (env->insn_flags & ISA_MIPS32R2) {
TCGv r_tmp1 = tcg_temp_new(TCG_TYPE_TL);
TCGv r_tmp2 = tcg_temp_new(TCG_TYPE_TL);
tcg_gen_movi_tl(r_tmp1, 0x40);
tcg_gen_movi_tl(r_tmp2, 32);
tcg_gen_addi_tl(r_tmp2, r_tmp2, uimm);
tcg_gen_sub_tl(r_tmp1, r_tmp1, r_tmp2);
tcg_gen_shl_tl(r_tmp1, t0, r_tmp1);
tcg_gen_shr_tl(t0, t0, r_tmp2);
tcg_gen_or_tl(t0, t0, r_tmp1);
tcg_temp_free(r_tmp1);
tcg_temp_free(r_tmp2);
tcg_gen_rotri_tl(t0, t0, uimm + 32);
opn = "drotr32";
} else {
tcg_gen_shri_tl(t0, t0, uimm + 32);
@ -1809,19 +1785,12 @@ static void gen_arith (CPUState *env, DisasContext *ctx, uint32_t opc,
{
TCGv r_tmp1 = tcg_temp_new(TCG_TYPE_I32);
TCGv r_tmp2 = tcg_temp_new(TCG_TYPE_I32);
TCGv r_tmp3 = tcg_temp_new(TCG_TYPE_I32);
tcg_gen_trunc_tl_i32(r_tmp1, t0);
tcg_gen_trunc_tl_i32(r_tmp2, t1);
tcg_gen_movi_i32(r_tmp3, 0x20);
tcg_gen_sub_i32(r_tmp3, r_tmp3, r_tmp1);
tcg_gen_shl_i32(r_tmp3, r_tmp2, r_tmp3);
tcg_gen_shr_i32(r_tmp1, r_tmp2, r_tmp1);
tcg_gen_or_i32(r_tmp1, r_tmp1, r_tmp3);
tcg_gen_ext_i32_tl(t0, r_tmp1);
tcg_gen_rotr_i32(r_tmp1, r_tmp1, r_tmp2);
tcg_temp_free(r_tmp1);
tcg_temp_free(r_tmp2);
tcg_temp_free(r_tmp3);
tcg_gen_br(l2);
}
gen_set_label(l1);
@ -1869,14 +1838,7 @@ static void gen_arith (CPUState *env, DisasContext *ctx, uint32_t opc,
tcg_gen_andi_tl(t0, t0, 0x3f);
tcg_gen_brcondi_tl(TCG_COND_EQ, t0, 0, l1);
{
TCGv r_tmp1 = tcg_temp_new(TCG_TYPE_TL);
tcg_gen_movi_tl(r_tmp1, 0x40);
tcg_gen_sub_tl(r_tmp1, r_tmp1, t0);
tcg_gen_shl_tl(r_tmp1, t1, r_tmp1);
tcg_gen_shr_tl(t0, t1, t0);
tcg_gen_or_tl(t0, t0, r_tmp1);
tcg_temp_free(r_tmp1);
tcg_gen_rotr_tl(t0, t1, t0);
tcg_gen_br(l2);
}
gen_set_label(l1);