OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

target/arm: Use mte_checkN for sve unpredicated stores

Browse Source 
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200626033144.790098-30-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2020-06-25 20:31:27 -07:00 committed by Peter Maydell
parent b2aa8879b8
commit bba87d0a0f
1 changed files with 33 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
target/arm/translate-sve.c
View File

@ -4432,10 +4432,12 @@ static void do_str(DisasContext *s, uint32_t vofs, int len, int rn, int imm)
int len_remain = len % 8;
int nparts = len / 8 + ctpop8(len_remain);
int midx = get_mem_index(s);
TCGv_i64 addr, t0;
TCGv_i64 dirty_addr, clean_addr, t0;
addr = tcg_temp_new_i64();
t0 = tcg_temp_new_i64();
dirty_addr = tcg_temp_new_i64();
tcg_gen_addi_i64(dirty_addr, cpu_reg_sp(s, rn), imm);
clean_addr = gen_mte_checkN(s, dirty_addr, false, rn != 31, len, MO_8);
tcg_temp_free_i64(dirty_addr);
/* Note that unpredicated load/store of vector/predicate registers
* are defined as a stream of bytes, which equates to little-endian
@ -4448,33 +4450,35 @@ static void do_str(DisasContext *s, uint32_t vofs, int len, int rn, int imm)
if (nparts <= 4) {
int i;
t0 = tcg_temp_new_i64();
for (i = 0; i < len_align; i += 8) {
tcg_gen_ld_i64(t0, cpu_env, vofs + i);
tcg_gen_addi_i64(addr, cpu_reg_sp(s, rn), imm + i);
tcg_gen_qemu_st_i64(t0, addr, midx, MO_LEQ);
tcg_gen_qemu_st_i64(t0, clean_addr, midx, MO_LEQ);
tcg_gen_addi_i64(clean_addr, cpu_reg_sp(s, rn), 8);
}
tcg_temp_free_i64(t0);
} else {
TCGLabel *loop = gen_new_label();
TCGv_ptr t2, i = tcg_const_local_ptr(0);
TCGv_ptr tp, i = tcg_const_local_ptr(0);
/* Copy the clean address into a local temp, live across the loop. */
t0 = clean_addr;
clean_addr = tcg_temp_local_new_i64();
tcg_gen_mov_i64(clean_addr, t0);
tcg_temp_free_i64(t0);
gen_set_label(loop);
t2 = tcg_temp_new_ptr();
tcg_gen_add_ptr(t2, cpu_env, i);
tcg_gen_ld_i64(t0, t2, vofs);
/* Minimize the number of local temps that must be re-read from
* the stack each iteration. Instead, re-compute values other
* than the loop counter.
*/
tcg_gen_addi_ptr(t2, i, imm);
tcg_gen_extu_ptr_i64(addr, t2);
tcg_gen_add_i64(addr, addr, cpu_reg_sp(s, rn));
tcg_temp_free_ptr(t2);
tcg_gen_qemu_st_i64(t0, addr, midx, MO_LEQ);
t0 = tcg_temp_new_i64();
tp = tcg_temp_new_ptr();
tcg_gen_add_ptr(tp, cpu_env, i);
tcg_gen_ld_i64(t0, tp, vofs);
tcg_gen_addi_ptr(i, i, 8);
tcg_temp_free_ptr(tp);
tcg_gen_qemu_st_i64(t0, clean_addr, midx, MO_LEQ);
tcg_gen_addi_i64(clean_addr, clean_addr, 8);
tcg_temp_free_i64(t0);
tcg_gen_brcondi_ptr(TCG_COND_LTU, i, len_align, loop);
tcg_temp_free_ptr(i);
@ -4482,29 +4486,30 @@ static void do_str(DisasContext *s, uint32_t vofs, int len, int rn, int imm)
/* Predicate register stores can be any multiple of 2. */
if (len_remain) {
t0 = tcg_temp_new_i64();
tcg_gen_ld_i64(t0, cpu_env, vofs + len_align);
tcg_gen_addi_i64(addr, cpu_reg_sp(s, rn), imm + len_align);
switch (len_remain) {
case 2:
case 4:
case 8:
tcg_gen_qemu_st_i64(t0, addr, midx, MO_LE | ctz32(len_remain));
tcg_gen_qemu_st_i64(t0, clean_addr, midx,
MO_LE | ctz32(len_remain));
break;
case 6:
tcg_gen_qemu_st_i64(t0, addr, midx, MO_LEUL);
tcg_gen_addi_i64(addr, addr, 4);
tcg_gen_qemu_st_i64(t0, clean_addr, midx, MO_LEUL);
tcg_gen_addi_i64(clean_addr, clean_addr, 4);
tcg_gen_shri_i64(t0, t0, 32);
tcg_gen_qemu_st_i64(t0, addr, midx, MO_LEUW);
tcg_gen_qemu_st_i64(t0, clean_addr, midx, MO_LEUW);
break;
default:
g_assert_not_reached();
}
}
tcg_temp_free_i64(addr);
tcg_temp_free_i64(t0);
}
tcg_temp_free_i64(clean_addr);
}
static bool trans_LDR_zri(DisasContext *s, arg_rri *a)