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tcg-aarch64: Introduce tcg_out_insn_3507

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Cleaning up the implementation of REV and REV16 at the same time.

Reviewed-by: Claudio Fontana <claudio.fontana@huawei.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2014-03-03 16:21:27 -08:00 committed by Richard Henderson
parent e81864a109
commit edd8824cd4
1 changed files with 33 additions and 24 deletions
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57
tcg/aarch64/tcg-target.c
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@ -327,6 +327,11 @@ typedef enum {
I3506_CSEL = 0x1a800000,
I3506_CSINC = 0x1a800400,
/* Data-processing (1 source) instructions. */
I3507_REV16 = 0x5ac00400,
I3507_REV32 = 0x5ac00800,
I3507_REV64 = 0x5ac00c00,
/* Data-processing (2 source) instructions. */
I3508_LSLV = 0x1ac02000,
I3508_LSRV = 0x1ac02400,
@ -545,6 +550,12 @@ static void tcg_out_insn_3506(TCGContext *s, AArch64Insn insn, TCGType ext,
| tcg_cond_to_aarch64[c] << 12);
}
static void tcg_out_insn_3507(TCGContext *s, AArch64Insn insn, TCGType ext,
TCGReg rd, TCGReg rn)
{
tcg_out32(s, insn | ext << 31 | rn << 5 | rd);
}
static void tcg_out_insn_3509(TCGContext *s, AArch64Insn insn, TCGType ext,
TCGReg rd, TCGReg rn, TCGReg rm, TCGReg ra)
{
@ -960,20 +971,19 @@ static void tcg_out_brcond(TCGContext *s, TCGMemOp ext, TCGCond c, TCGArg a,
}
}
static inline void tcg_out_rev(TCGContext *s, TCGType ext,
TCGReg rd, TCGReg rm)
static inline void tcg_out_rev64(TCGContext *s, TCGReg rd, TCGReg rn)
{
/* using REV 0x5ac00800 */
unsigned int base = ext ? 0xdac00c00 : 0x5ac00800;
tcg_out32(s, base | rm << 5 | rd);
tcg_out_insn(s, 3507, REV64, TCG_TYPE_I64, rd, rn);
}
static inline void tcg_out_rev16(TCGContext *s, TCGType ext,
TCGReg rd, TCGReg rm)
static inline void tcg_out_rev32(TCGContext *s, TCGReg rd, TCGReg rn)
{
/* using REV16 0x5ac00400 */
unsigned int base = ext ? 0xdac00400 : 0x5ac00400;
tcg_out32(s, base | rm << 5 | rd);
tcg_out_insn(s, 3507, REV32, TCG_TYPE_I32, rd, rn);
}
static inline void tcg_out_rev16(TCGContext *s, TCGReg rd, TCGReg rn)
{
tcg_out_insn(s, 3507, REV16, TCG_TYPE_I32, rd, rn);
}
static inline void tcg_out_sxt(TCGContext *s, TCGType ext, TCGMemOp s_bits,
@ -1205,13 +1215,13 @@ static void tcg_out_qemu_ld_direct(TCGContext *s, TCGMemOp memop,
case MO_UW:
tcg_out_ldst_r(s, LDST_16, LDST_LD, data_r, addr_r, off_r);
if (bswap) {
tcg_out_rev16(s, TCG_TYPE_I32, data_r, data_r);
tcg_out_rev16(s, data_r, data_r);
}
break;
case MO_SW:
if (bswap) {
tcg_out_ldst_r(s, LDST_16, LDST_LD, data_r, addr_r, off_r);
tcg_out_rev16(s, TCG_TYPE_I32, data_r, data_r);
tcg_out_rev16(s, data_r, data_r);
tcg_out_sxt(s, TCG_TYPE_I64, MO_16, data_r, data_r);
} else {
tcg_out_ldst_r(s, LDST_16, LDST_LD_S_X, data_r, addr_r, off_r);
@ -1220,13 +1230,13 @@ static void tcg_out_qemu_ld_direct(TCGContext *s, TCGMemOp memop,
case MO_UL:
tcg_out_ldst_r(s, LDST_32, LDST_LD, data_r, addr_r, off_r);
if (bswap) {
tcg_out_rev(s, TCG_TYPE_I32, data_r, data_r);
tcg_out_rev32(s, data_r, data_r);
}
break;
case MO_SL:
if (bswap) {
tcg_out_ldst_r(s, LDST_32, LDST_LD, data_r, addr_r, off_r);
tcg_out_rev(s, TCG_TYPE_I32, data_r, data_r);
tcg_out_rev32(s, data_r, data_r);
tcg_out_sxt(s, TCG_TYPE_I64, MO_32, data_r, data_r);
} else {
tcg_out_ldst_r(s, LDST_32, LDST_LD_S_X, data_r, addr_r, off_r);
@ -1235,7 +1245,7 @@ static void tcg_out_qemu_ld_direct(TCGContext *s, TCGMemOp memop,
case MO_Q:
tcg_out_ldst_r(s, LDST_64, LDST_LD, data_r, addr_r, off_r);
if (bswap) {
tcg_out_rev(s, TCG_TYPE_I64, data_r, data_r);
tcg_out_rev64(s, data_r, data_r);
}
break;
default:
@ -1254,21 +1264,21 @@ static void tcg_out_qemu_st_direct(TCGContext *s, TCGMemOp memop,
break;
case MO_16:
if (bswap && data_r != TCG_REG_XZR) {
tcg_out_rev16(s, TCG_TYPE_I32, TCG_REG_TMP, data_r);
tcg_out_rev16(s, TCG_REG_TMP, data_r);
data_r = TCG_REG_TMP;
}
tcg_out_ldst_r(s, LDST_16, LDST_ST, data_r, addr_r, off_r);
break;
case MO_32:
if (bswap && data_r != TCG_REG_XZR) {
tcg_out_rev(s, TCG_TYPE_I32, TCG_REG_TMP, data_r);
tcg_out_rev32(s, TCG_REG_TMP, data_r);
data_r = TCG_REG_TMP;
}
tcg_out_ldst_r(s, LDST_32, LDST_ST, data_r, addr_r, off_r);
break;
case MO_64:
if (bswap && data_r != TCG_REG_XZR) {
tcg_out_rev(s, TCG_TYPE_I64, TCG_REG_TMP, data_r);
tcg_out_rev64(s, TCG_REG_TMP, data_r);
data_r = TCG_REG_TMP;
}
tcg_out_ldst_r(s, LDST_64, LDST_ST, data_r, addr_r, off_r);
@ -1591,17 +1601,16 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
tcg_out_qemu_st(s, REG0(0), a1, a2, args[3]);
break;
case INDEX_op_bswap32_i64:
/* Despite the _i64, this is a 32-bit bswap. */
ext = 0;
/* FALLTHRU */
case INDEX_op_bswap64_i64:
tcg_out_rev64(s, a0, a1);
break;
case INDEX_op_bswap32_i64:
case INDEX_op_bswap32_i32:
tcg_out_rev(s, ext, a0, a1);
tcg_out_rev32(s, a0, a1);
break;
case INDEX_op_bswap16_i64:
case INDEX_op_bswap16_i32:
tcg_out_rev16(s, TCG_TYPE_I32, a0, a1);
tcg_out_rev16(s, a0, a1);
break;
case INDEX_op_ext8s_i64: