R0078 specifies that base register, or base register plus immediate
offset, is unchecked when the base register is SP.
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
v2: Include writeback addresses as checked.
---
target/arm/translate-a64.c | 37 ++++++++++++++++++-------------------
1 file changed, 18 insertions(+), 19 deletions(-)
diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index 8e9f40f2a6..d0f8c314c9 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -340,12 +340,11 @@ static void gen_a64_set_pc(DisasContext *s, TCGv_i64 src)
* This is always a fresh temporary, as we need to be able to
* increment this independently of a dirty write-back address.
*/
-static TCGv_i64 clean_data_tbi(DisasContext *s, TCGv_i64 addr)
+static TCGv_i64 clean_data_tbi(DisasContext *s, TCGv_i64 addr, bool check)
{
TCGv_i64 clean = new_tmp_a64(s);
- /* FIXME: SP+OFS is always unchecked. */
- if (s->tbid && s->mte_active) {
+ if (check && s->mte_active) {
gen_helper_mte_check(clean, cpu_env, addr);
} else {
gen_top_byte_ignore(s, clean, addr, s->tbid);
@@ -2379,7 +2378,7 @@ static void gen_compare_and_swap(DisasContext *s, int rs,
int rt,
if (rn == 31) {
gen_check_sp_alignment(s);
}
- clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn));
+ clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn), rn != 31);
tcg_gen_atomic_cmpxchg_i64(tcg_rs, clean_addr, tcg_rs, tcg_rt, memidx,
size | MO_ALIGN | s->be_data);
}
@@ -2397,7 +2396,7 @@ static void gen_compare_and_swap_pair(DisasContext *s,
int rs, int rt,
if (rn == 31) {
gen_check_sp_alignment(s);
}
- clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn));
+ clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn), rn != 31);
if (size == 2) {
TCGv_i64 cmp = tcg_temp_new_i64();
@@ -2522,7 +2521,7 @@ static void disas_ldst_excl(DisasContext *s, uint32_t
insn)
if (is_lasr) {
tcg_gen_mb(TCG_MO_ALL | TCG_BAR_STRL);
}
- clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn));
+ clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn), rn != 31);
gen_store_exclusive(s, rs, rt, rt2, clean_addr, size, false);
return;
@@ -2531,7 +2530,7 @@ static void disas_ldst_excl(DisasContext *s, uint32_t
insn)
if (rn == 31) {
gen_check_sp_alignment(s);
}
- clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn));
+ clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn), rn != 31);
s->is_ldex = true;
gen_load_exclusive(s, rt, rt2, clean_addr, size, false);
if (is_lasr) {
@@ -2551,7 +2550,7 @@ static void disas_ldst_excl(DisasContext *s, uint32_t
insn)
gen_check_sp_alignment(s);
}
tcg_gen_mb(TCG_MO_ALL | TCG_BAR_STRL);
- clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn));
+ clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn), rn != 31);
do_gpr_st(s, cpu_reg(s, rt), clean_addr, size, true, rt,
disas_ldst_compute_iss_sf(size, false, 0), is_lasr);
return;
@@ -2567,7 +2566,7 @@ static void disas_ldst_excl(DisasContext *s, uint32_t
insn)
if (rn == 31) {
gen_check_sp_alignment(s);
}
- clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn));
+ clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn), rn != 31);
do_gpr_ld(s, cpu_reg(s, rt), clean_addr, size, false, false, true, rt,
disas_ldst_compute_iss_sf(size, false, 0), is_lasr);
tcg_gen_mb(TCG_MO_ALL | TCG_BAR_LDAQ);
@@ -2581,7 +2580,7 @@ static void disas_ldst_excl(DisasContext *s, uint32_t
insn)
if (is_lasr) {
tcg_gen_mb(TCG_MO_ALL | TCG_BAR_STRL);
}
- clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn));
+ clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn), rn != 31);
gen_store_exclusive(s, rs, rt, rt2, clean_addr, size, true);
return;
}
@@ -2599,7 +2598,7 @@ static void disas_ldst_excl(DisasContext *s, uint32_t
insn)
if (rn == 31) {
gen_check_sp_alignment(s);
}
- clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn));
+ clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn), rn != 31);
s->is_ldex = true;
gen_load_exclusive(s, rt, rt2, clean_addr, size, true);
if (is_lasr) {
@@ -2789,7 +2788,7 @@ static void disas_ldst_pair(DisasContext *s, uint32_t
insn)
if (!postindex) {
tcg_gen_addi_i64(dirty_addr, dirty_addr, offset);
}
- clean_addr = clean_data_tbi(s, dirty_addr);
+ clean_addr = clean_data_tbi(s, dirty_addr, wback || rn != 31);
if (is_vector) {
if (is_load) {
@@ -2927,7 +2926,7 @@ static void disas_ldst_reg_imm9(DisasContext *s, uint32_t
insn,
if (!post_index) {
tcg_gen_addi_i64(dirty_addr, dirty_addr, imm9);
}
- clean_addr = clean_data_tbi(s, dirty_addr);
+ clean_addr = clean_data_tbi(s, dirty_addr, writeback || rn != 31);
if (is_vector) {
if (is_store) {
@@ -3034,7 +3033,7 @@ static void disas_ldst_reg_roffset(DisasContext *s,
uint32_t insn,
ext_and_shift_reg(tcg_rm, tcg_rm, opt, shift ? size : 0);
tcg_gen_add_i64(dirty_addr, dirty_addr, tcg_rm);
- clean_addr = clean_data_tbi(s, dirty_addr);
+ clean_addr = clean_data_tbi(s, dirty_addr, true);
if (is_vector) {
if (is_store) {
@@ -3119,7 +3118,7 @@ static void disas_ldst_reg_unsigned_imm(DisasContext *s,
uint32_t insn,
dirty_addr = read_cpu_reg_sp(s, rn, 1);
offset = imm12 << size;
tcg_gen_addi_i64(dirty_addr, dirty_addr, offset);
- clean_addr = clean_data_tbi(s, dirty_addr);
+ clean_addr = clean_data_tbi(s, dirty_addr, rn != 31);
if (is_vector) {
if (is_store) {
@@ -3203,7 +3202,7 @@ static void disas_ldst_atomic(DisasContext *s, uint32_t
insn,
if (rn == 31) {
gen_check_sp_alignment(s);
}
- clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn));
+ clean_addr = clean_data_tbi(s, cpu_reg_sp(s, rn), rn != 31);
tcg_rs = read_cpu_reg(s, rs, true);
if (o3_opc == 1) { /* LDCLR */
@@ -3265,7 +3264,7 @@ static void disas_ldst_pac(DisasContext *s, uint32_t insn,
tcg_gen_addi_i64(dirty_addr, dirty_addr, offset);
/* Note that "clean" and "dirty" here refer to TBI not PAC. */
- clean_addr = clean_data_tbi(s, dirty_addr);
+ clean_addr = clean_data_tbi(s, dirty_addr, is_wback || rn != 31);
tcg_rt = cpu_reg(s, rt);
do_gpr_ld(s, tcg_rt, clean_addr, size, /* is_signed */ false,
@@ -3425,7 +3424,7 @@ static void disas_ldst_multiple_struct(DisasContext *s,
uint32_t insn)
elements = (is_q ? 16 : 8) / ebytes;
tcg_rn = cpu_reg_sp(s, rn);
- clean_addr = clean_data_tbi(s, tcg_rn);
+ clean_addr = clean_data_tbi(s, tcg_rn, is_postidx || rn != 31);
tcg_ebytes = tcg_const_i64(ebytes);
for (r = 0; r < rpt; r++) {
@@ -3568,7 +3567,7 @@ static void disas_ldst_single_struct(DisasContext *s,
uint32_t insn)
}
tcg_rn = cpu_reg_sp(s, rn);
- clean_addr = clean_data_tbi(s, tcg_rn);
+ clean_addr = clean_data_tbi(s, tcg_rn, is_postidx || rn != 31);
tcg_ebytes = tcg_const_i64(ebytes);
for (xs = 0; xs < selem; xs++) {
--
2.17.2
