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target-sparc: Use overalignment flags for twinx and block asis 

This allows us to enforce 16 and 64-byte alignment
without any extra overhead.

Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1466744068-6615-1-git-send-email-rth@twiddle.net>
This commit is contained in:
Richard Henderson 2016-06-23 21:54:28 -07:00
parent 4178c782f8
commit 808832277a
1 changed files with 12 additions and 9 deletions
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21
target-sparc/translate.c
View File

@ -2385,20 +2385,23 @@ static void gen_ldf_asi(DisasContext *dc, TCGv addr,
case GET_ASI_BLOCK:
/* Valid for lddfa on aligned registers only. */
if (size == 8 && (rd & 7) == 0) {
TCGMemOp memop;
TCGv eight;
int i;
gen_check_align(addr, 0x3f);
gen_address_mask(dc, addr);
/* The first operation checks required alignment. */
memop = da.memop | MO_ALIGN_64;
eight = tcg_const_tl(8);
for (i = 0; ; ++i) {
tcg_gen_qemu_ld_i64(cpu_fpr[rd / 2 + i], addr,
da.mem_idx, da.memop);
da.mem_idx, memop);
if (i == 7) {
break;
}
tcg_gen_add_tl(addr, addr, eight);
memop = da.memop;
}
tcg_temp_free(eight);
} else {
@ -2488,20 +2491,23 @@ static void gen_stf_asi(DisasContext *dc, TCGv addr,
case GET_ASI_BLOCK:
/* Valid for stdfa on aligned registers only. */
if (size == 8 && (rd & 7) == 0) {
TCGMemOp memop;
TCGv eight;
int i;
gen_check_align(addr, 0x3f);
gen_address_mask(dc, addr);
/* The first operation checks required alignment. */
memop = da.memop | MO_ALIGN_64;
eight = tcg_const_tl(8);
for (i = 0; ; ++i) {
tcg_gen_qemu_st_i64(cpu_fpr[rd / 2 + i], addr,
da.mem_idx, da.memop);
da.mem_idx, memop);
if (i == 7) {
break;
}
tcg_gen_add_tl(addr, addr, eight);
memop = da.memop;
}
tcg_temp_free(eight);
} else {
@ -2539,9 +2545,8 @@ static void gen_ldda_asi(DisasContext *dc, TCGv addr, int insn, int rd)
return;
case GET_ASI_DTWINX:
gen_check_align(addr, 15);
gen_address_mask(dc, addr);
tcg_gen_qemu_ld_i64(hi, addr, da.mem_idx, da.memop);
tcg_gen_qemu_ld_i64(hi, addr, da.mem_idx, da.memop | MO_ALIGN_16);
tcg_gen_addi_tl(addr, addr, 8);
tcg_gen_qemu_ld_i64(lo, addr, da.mem_idx, da.memop);
break;
@ -2594,9 +2599,8 @@ static void gen_stda_asi(DisasContext *dc, TCGv hi, TCGv addr,
break;
case GET_ASI_DTWINX:
gen_check_align(addr, 15);
gen_address_mask(dc, addr);
tcg_gen_qemu_st_i64(hi, addr, da.mem_idx, da.memop);
tcg_gen_qemu_st_i64(hi, addr, da.mem_idx, da.memop | MO_ALIGN_16);
tcg_gen_addi_tl(addr, addr, 8);
tcg_gen_qemu_st_i64(lo, addr, da.mem_idx, da.memop);
break;
@ -5468,7 +5472,6 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
if (gen_trap_ifnofpu(dc)) {
goto jmp_insn;
}
gen_check_align(cpu_addr, 7);
gen_stf_asi(dc, cpu_addr, insn, 16, QFPREG(rd));
}
break;