haraldwolff/qemu-patch-raspberry4
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Convert udiv/sdiv

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Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Blue Swirl 2009-05-10 07:42:54 +00:00
parent 3b2d1e9286
commit 6c78ea32e1
2 changed files with 31 additions and 19 deletions
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25
target-sparc/op_helper.c
View file

@ -790,6 +790,29 @@ static inline uint32_t get_NZ_xcc(target_ulong dst)
}
#endif
static inline uint32_t get_V_div_icc(target_ulong src2)
{
uint32_t ret = 0;
if (src2 != 0)
ret |= PSR_OVF;
return ret;
}
static uint32_t compute_all_div(void)
{
uint32_t ret;
ret = get_NZ_icc(CC_DST);
ret |= get_V_div_icc(CC_SRC2);
return ret;
}
static uint32_t compute_C_div(void)
{
return 0;
}
static inline uint32_t get_C_add_icc(target_ulong dst, target_ulong src1)
{
uint32_t ret = 0;
@ -1108,6 +1131,7 @@ typedef struct CCTable {
static const CCTable icc_table[CC_OP_NB] = {
/* CC_OP_DYNAMIC should never happen */
[CC_OP_FLAGS] = { compute_all_flags, compute_C_flags },
[CC_OP_DIV] = { compute_all_div, compute_C_div },
[CC_OP_ADD] = { compute_all_add, compute_C_add },
[CC_OP_ADDX] = { compute_all_addx, compute_C_addx },
[CC_OP_TADD] = { compute_all_tadd, compute_C_tadd },
@ -1123,6 +1147,7 @@ static const CCTable icc_table[CC_OP_NB] = {
static const CCTable xcc_table[CC_OP_NB] = {
/* CC_OP_DYNAMIC should never happen */
[CC_OP_FLAGS] = { compute_all_flags_xcc, compute_C_flags_xcc },
[CC_OP_DIV] = { compute_all_logic_xcc, compute_C_logic },
[CC_OP_ADD] = { compute_all_add_xcc, compute_C_add_xcc },
[CC_OP_ADDX] = { compute_all_addx_xcc, compute_C_addx_xcc },
[CC_OP_TADD] = { compute_all_add_xcc, compute_C_add_xcc },

25
target-sparc/translate.c
View file

@ -701,19 +701,6 @@ static inline void gen_op_sdivx(TCGv dst, TCGv src1, TCGv src2)
}
#endif
static inline void gen_op_div_cc(TCGv dst)
{
int l1;
tcg_gen_mov_tl(cpu_cc_dst, dst);
gen_cc_clear_icc();
gen_cc_NZ_icc(cpu_cc_dst);
l1 = gen_new_label();
tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_cc_src2, 0, l1);
tcg_gen_ori_i32(cpu_psr, cpu_psr, PSR_OVF);
gen_set_label(l1);
}
// 1
static inline void gen_op_eval_ba(TCGv dst)
{
@ -3151,18 +3138,18 @@ static void disas_sparc_insn(DisasContext * dc)
CHECK_IU_FEATURE(dc, DIV);
gen_helper_udiv(cpu_dst, cpu_src1, cpu_src2);
if (xop & 0x10) {
gen_op_div_cc(cpu_dst);
tcg_gen_movi_i32(cpu_cc_op, CC_OP_FLAGS);
dc->cc_op = CC_OP_FLAGS;
tcg_gen_mov_tl(cpu_cc_dst, cpu_dst);
tcg_gen_movi_i32(cpu_cc_op, CC_OP_DIV);
dc->cc_op = CC_OP_DIV;
}
break;
case 0xf: /* sdiv */
CHECK_IU_FEATURE(dc, DIV);
gen_helper_sdiv(cpu_dst, cpu_src1, cpu_src2);
if (xop & 0x10) {
gen_op_div_cc(cpu_dst);
tcg_gen_movi_i32(cpu_cc_op, CC_OP_FLAGS);
dc->cc_op = CC_OP_FLAGS;
tcg_gen_mov_tl(cpu_cc_dst, cpu_dst);
tcg_gen_movi_i32(cpu_cc_op, CC_OP_DIV);
dc->cc_op = CC_OP_DIV;
}
break;
default: