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tcg-aarch64: Use TCGMemOp in qemu_ld/st

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Making the bswap conditional on the memop instead of a compile-time test.

Reviewed-by: Claudio Fontana <claudio.fontana@huawei.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2014-02-26 18:54:38 -05:00 committed by Richard Henderson
parent dc0c8aaf2c
commit 9e4177ad6d
1 changed files with 63 additions and 68 deletions
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131
tcg/aarch64/tcg-target.c
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@ -27,12 +27,6 @@ static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
};
#endif /* NDEBUG */
#ifdef TARGET_WORDS_BIGENDIAN
#define TCG_LDST_BSWAP 1
#else
#define TCG_LDST_BSWAP 0
#endif
static const int tcg_target_reg_alloc_order[] = {
TCG_REG_X20, TCG_REG_X21, TCG_REG_X22, TCG_REG_X23,
TCG_REG_X24, TCG_REG_X25, TCG_REG_X26, TCG_REG_X27,
@ -1113,7 +1107,7 @@ static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
tcg_out_goto(s, (intptr_t)lb->raddr);
}
static void add_qemu_ldst_label(TCGContext *s, int is_ld, int opc,
static void add_qemu_ldst_label(TCGContext *s, int is_ld, TCGMemOp opc,
TCGReg data_reg, TCGReg addr_reg,
int mem_index,
uint8_t *raddr, uint8_t *label_ptr)
@ -1133,7 +1127,7 @@ static void add_qemu_ldst_label(TCGContext *s, int is_ld, int opc,
slow path for the failure case, which will be patched later when finalizing
the slow path. Generated code returns the host addend in X1,
clobbers X0,X2,X3,TMP. */
static void tcg_out_tlb_read(TCGContext *s, TCGReg addr_reg, int s_bits,
static void tcg_out_tlb_read(TCGContext *s, TCGReg addr_reg, TCGMemOp s_bits,
uint8_t **label_ptr, int mem_index, bool is_read)
{
TCGReg base = TCG_AREG0;
@ -1189,24 +1183,26 @@ static void tcg_out_tlb_read(TCGContext *s, TCGReg addr_reg, int s_bits,
#endif /* CONFIG_SOFTMMU */
static void tcg_out_qemu_ld_direct(TCGContext *s, int opc, TCGReg data_r,
TCGReg addr_r, TCGReg off_r)
static void tcg_out_qemu_ld_direct(TCGContext *s, TCGMemOp memop,
TCGReg data_r, TCGReg addr_r, TCGReg off_r)
{
switch (opc) {
case 0:
const TCGMemOp bswap = memop & MO_BSWAP;
switch (memop & MO_SSIZE) {
case MO_UB:
tcg_out_ldst_r(s, LDST_8, LDST_LD, data_r, addr_r, off_r);
break;
case 0 | 4:
case MO_SB:
tcg_out_ldst_r(s, LDST_8, LDST_LD_S_X, data_r, addr_r, off_r);
break;
case 1:
case MO_UW:
tcg_out_ldst_r(s, LDST_16, LDST_LD, data_r, addr_r, off_r);
if (TCG_LDST_BSWAP) {
if (bswap) {
tcg_out_rev16(s, TCG_TYPE_I32, data_r, data_r);
}
break;
case 1 | 4:
if (TCG_LDST_BSWAP) {
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_sxt(s, TCG_TYPE_I64, MO_16, data_r, data_r);
@ -1214,14 +1210,14 @@ static void tcg_out_qemu_ld_direct(TCGContext *s, int opc, TCGReg data_r,
tcg_out_ldst_r(s, LDST_16, LDST_LD_S_X, data_r, addr_r, off_r);
}
break;
case 2:
case MO_UL:
tcg_out_ldst_r(s, LDST_32, LDST_LD, data_r, addr_r, off_r);
if (TCG_LDST_BSWAP) {
if (bswap) {
tcg_out_rev(s, TCG_TYPE_I32, data_r, data_r);
}
break;
case 2 | 4:
if (TCG_LDST_BSWAP) {
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_sxt(s, TCG_TYPE_I64, MO_32, data_r, data_r);
@ -1229,9 +1225,9 @@ static void tcg_out_qemu_ld_direct(TCGContext *s, int opc, TCGReg data_r,
tcg_out_ldst_r(s, LDST_32, LDST_LD_S_X, data_r, addr_r, off_r);
}
break;
case 3:
case MO_Q:
tcg_out_ldst_r(s, LDST_64, LDST_LD, data_r, addr_r, off_r);
if (TCG_LDST_BSWAP) {
if (bswap) {
tcg_out_rev(s, TCG_TYPE_I64, data_r, data_r);
}
break;
@ -1240,47 +1236,47 @@ static void tcg_out_qemu_ld_direct(TCGContext *s, int opc, TCGReg data_r,
}
}
static void tcg_out_qemu_st_direct(TCGContext *s, int opc, TCGReg data_r,
TCGReg addr_r, TCGReg off_r)
static void tcg_out_qemu_st_direct(TCGContext *s, TCGMemOp memop,
TCGReg data_r, TCGReg addr_r, TCGReg off_r)
{
switch (opc) {
case 0:
const TCGMemOp bswap = memop & MO_BSWAP;
switch (memop & MO_SIZE) {
case MO_8:
tcg_out_ldst_r(s, LDST_8, LDST_ST, data_r, addr_r, off_r);
break;
case 1:
if (TCG_LDST_BSWAP) {
case MO_16:
if (bswap) {
tcg_out_rev16(s, TCG_TYPE_I32, TCG_REG_TMP, data_r);
tcg_out_ldst_r(s, LDST_16, LDST_ST, TCG_REG_TMP, addr_r, off_r);
} else {
data_r = TCG_REG_TMP;
}
tcg_out_ldst_r(s, LDST_16, LDST_ST, data_r, addr_r, off_r);
}
break;
case 2:
if (TCG_LDST_BSWAP) {
case MO_32:
if (bswap) {
tcg_out_rev(s, TCG_TYPE_I32, TCG_REG_TMP, data_r);
tcg_out_ldst_r(s, LDST_32, LDST_ST, TCG_REG_TMP, addr_r, off_r);
} else {
data_r = TCG_REG_TMP;
}
tcg_out_ldst_r(s, LDST_32, LDST_ST, data_r, addr_r, off_r);
}
break;
case 3:
if (TCG_LDST_BSWAP) {
case MO_64:
if (bswap) {
tcg_out_rev(s, TCG_TYPE_I64, TCG_REG_TMP, data_r);
tcg_out_ldst_r(s, LDST_64, LDST_ST, TCG_REG_TMP, addr_r, off_r);
} else {
tcg_out_ldst_r(s, LDST_64, LDST_ST, data_r, addr_r, off_r);
data_r = TCG_REG_TMP;
}
tcg_out_ldst_r(s, LDST_64, LDST_ST, data_r, addr_r, off_r);
break;
default:
tcg_abort();
}
}
static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, int opc)
static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, TCGMemOp memop)
{
TCGReg addr_reg, data_reg;
#ifdef CONFIG_SOFTMMU
int mem_index, s_bits;
int mem_index;
TCGMemOp s_bits;
uint8_t *label_ptr;
#endif
data_reg = args[0];
@ -1288,22 +1284,23 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, int opc)
#ifdef CONFIG_SOFTMMU
mem_index = args[2];
s_bits = opc & 3;
s_bits = memop & MO_SIZE;
tcg_out_tlb_read(s, addr_reg, s_bits, &label_ptr, mem_index, 1);
tcg_out_qemu_ld_direct(s, opc, data_reg, addr_reg, TCG_REG_X1);
add_qemu_ldst_label(s, 1, opc, data_reg, addr_reg,
tcg_out_qemu_ld_direct(s, memop, data_reg, addr_reg, TCG_REG_X1);
add_qemu_ldst_label(s, 1, memop, data_reg, addr_reg,
mem_index, s->code_ptr, label_ptr);
#else /* !CONFIG_SOFTMMU */
tcg_out_qemu_ld_direct(s, opc, data_reg, addr_reg,
tcg_out_qemu_ld_direct(s, memop, data_reg, addr_reg,
GUEST_BASE ? TCG_REG_GUEST_BASE : TCG_REG_XZR);
#endif /* CONFIG_SOFTMMU */
}
static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int opc)
static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, TCGMemOp memop)
{
TCGReg addr_reg, data_reg;
#ifdef CONFIG_SOFTMMU
int mem_index, s_bits;
int mem_index;
TCGMemOp s_bits;
uint8_t *label_ptr;
#endif
data_reg = args[0];
@ -1311,14 +1308,14 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int opc)
#ifdef CONFIG_SOFTMMU
mem_index = args[2];
s_bits = opc & 3;
s_bits = memop & MO_SIZE;
tcg_out_tlb_read(s, addr_reg, s_bits, &label_ptr, mem_index, 0);
tcg_out_qemu_st_direct(s, opc, data_reg, addr_reg, TCG_REG_X1);
add_qemu_ldst_label(s, 0, opc, data_reg, addr_reg,
tcg_out_qemu_st_direct(s, memop, data_reg, addr_reg, TCG_REG_X1);
add_qemu_ldst_label(s, 0, memop, data_reg, addr_reg,
mem_index, s->code_ptr, label_ptr);
#else /* !CONFIG_SOFTMMU */
tcg_out_qemu_st_direct(s, opc, data_reg, addr_reg,
tcg_out_qemu_st_direct(s, memop, data_reg, addr_reg,
GUEST_BASE ? TCG_REG_GUEST_BASE : TCG_REG_XZR);
#endif /* CONFIG_SOFTMMU */
}
@ -1591,40 +1588,38 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
break;
case INDEX_op_qemu_ld8u:
tcg_out_qemu_ld(s, args, 0 | 0);
tcg_out_qemu_ld(s, args, MO_UB);
break;
case INDEX_op_qemu_ld8s:
tcg_out_qemu_ld(s, args, 4 | 0);
tcg_out_qemu_ld(s, args, MO_SB);
break;
case INDEX_op_qemu_ld16u:
tcg_out_qemu_ld(s, args, 0 | 1);
tcg_out_qemu_ld(s, args, MO_TEUW);
break;
case INDEX_op_qemu_ld16s:
tcg_out_qemu_ld(s, args, 4 | 1);
tcg_out_qemu_ld(s, args, MO_TESW);
break;
case INDEX_op_qemu_ld32u:
tcg_out_qemu_ld(s, args, 0 | 2);
case INDEX_op_qemu_ld32:
tcg_out_qemu_ld(s, args, MO_TEUL);
break;
case INDEX_op_qemu_ld32s:
tcg_out_qemu_ld(s, args, 4 | 2);
break;
case INDEX_op_qemu_ld32:
tcg_out_qemu_ld(s, args, 0 | 2);
tcg_out_qemu_ld(s, args, MO_TESL);
break;
case INDEX_op_qemu_ld64:
tcg_out_qemu_ld(s, args, 0 | 3);
tcg_out_qemu_ld(s, args, MO_TEQ);
break;
case INDEX_op_qemu_st8:
tcg_out_qemu_st(s, args, 0);
tcg_out_qemu_st(s, args, MO_UB);
break;
case INDEX_op_qemu_st16:
tcg_out_qemu_st(s, args, 1);
tcg_out_qemu_st(s, args, MO_TEUW);
break;
case INDEX_op_qemu_st32:
tcg_out_qemu_st(s, args, 2);
tcg_out_qemu_st(s, args, MO_TEUL);
break;
case INDEX_op_qemu_st64:
tcg_out_qemu_st(s, args, 3);
tcg_out_qemu_st(s, args, MO_TEQ);
break;
case INDEX_op_bswap32_i64: