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qemu/tcg/tci/tcg-target.c
Richard Henderson ee79c356ff tci: Make tcg temporaries local to tcg_qemu_tb_exec 
We're moving away from the temporaries stored in env.  Make sure we can
differentiate between temp stores and possibly bogus stores for extra
call arguments.  Move TCG_AREG0 and TCG_REG_CALL_STACK out of the way
of the parameter passing registers.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off by: Stefan Weil <sw@weilnetz.de>
2013-04-11 19:58:21 +02:00

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/*
* Tiny Code Generator for QEMU
*
* Copyright (c) 2009, 2011 Stefan Weil
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/* TODO list:
* - See TODO comments in code.
*/
/* Marker for missing code. */
#define TODO() \
do { \
fprintf(stderr, "TODO %s:%u: %s()\n", \
__FILE__, __LINE__, __func__); \
tcg_abort(); \
} while (0)
/* Single bit n. */
#define BIT(n) (1 << (n))
/* Bitfield n...m (in 32 bit value). */
#define BITS(n, m) (((0xffffffffU << (31 - n)) >> (31 - n + m)) << m)
/* Macros used in tcg_target_op_defs. */
#define R "r"
#define RI "ri"
#if TCG_TARGET_REG_BITS == 32
# define R64 "r", "r"
#else
# define R64 "r"
#endif
#if TARGET_LONG_BITS > TCG_TARGET_REG_BITS
# define L "L", "L"
# define S "S", "S"
#else
# define L "L"
# define S "S"
#endif
/* TODO: documentation. */
static const TCGTargetOpDef tcg_target_op_defs[] = {
{ INDEX_op_exit_tb, { NULL } },
{ INDEX_op_goto_tb, { NULL } },
{ INDEX_op_call, { RI } },
{ INDEX_op_br, { NULL } },
{ INDEX_op_mov_i32, { R, R } },
{ INDEX_op_movi_i32, { R } },
{ INDEX_op_ld8u_i32, { R, R } },
{ INDEX_op_ld8s_i32, { R, R } },
{ INDEX_op_ld16u_i32, { R, R } },
{ INDEX_op_ld16s_i32, { R, R } },
{ INDEX_op_ld_i32, { R, R } },
{ INDEX_op_st8_i32, { R, R } },
{ INDEX_op_st16_i32, { R, R } },
{ INDEX_op_st_i32, { R, R } },
{ INDEX_op_add_i32, { R, RI, RI } },
{ INDEX_op_sub_i32, { R, RI, RI } },
{ INDEX_op_mul_i32, { R, RI, RI } },
#if TCG_TARGET_HAS_div_i32
{ INDEX_op_div_i32, { R, R, R } },
{ INDEX_op_divu_i32, { R, R, R } },
{ INDEX_op_rem_i32, { R, R, R } },
{ INDEX_op_remu_i32, { R, R, R } },
#elif TCG_TARGET_HAS_div2_i32
{ INDEX_op_div2_i32, { R, R, "0", "1", R } },
{ INDEX_op_divu2_i32, { R, R, "0", "1", R } },
#endif
/* TODO: Does R, RI, RI result in faster code than R, R, RI?
If both operands are constants, we can optimize. */
{ INDEX_op_and_i32, { R, RI, RI } },
#if TCG_TARGET_HAS_andc_i32
{ INDEX_op_andc_i32, { R, RI, RI } },
#endif
#if TCG_TARGET_HAS_eqv_i32
{ INDEX_op_eqv_i32, { R, RI, RI } },
#endif
#if TCG_TARGET_HAS_nand_i32
{ INDEX_op_nand_i32, { R, RI, RI } },
#endif
#if TCG_TARGET_HAS_nor_i32
{ INDEX_op_nor_i32, { R, RI, RI } },
#endif
{ INDEX_op_or_i32, { R, RI, RI } },
#if TCG_TARGET_HAS_orc_i32
{ INDEX_op_orc_i32, { R, RI, RI } },
#endif
{ INDEX_op_xor_i32, { R, RI, RI } },
{ INDEX_op_shl_i32, { R, RI, RI } },
{ INDEX_op_shr_i32, { R, RI, RI } },
{ INDEX_op_sar_i32, { R, RI, RI } },
#if TCG_TARGET_HAS_rot_i32
{ INDEX_op_rotl_i32, { R, RI, RI } },
{ INDEX_op_rotr_i32, { R, RI, RI } },
#endif
#if TCG_TARGET_HAS_deposit_i32
{ INDEX_op_deposit_i32, { R, "0", R } },
#endif
{ INDEX_op_brcond_i32, { R, RI } },
{ INDEX_op_setcond_i32, { R, R, RI } },
#if TCG_TARGET_REG_BITS == 64
{ INDEX_op_setcond_i64, { R, R, RI } },
#endif /* TCG_TARGET_REG_BITS == 64 */
#if TCG_TARGET_REG_BITS == 32
/* TODO: Support R, R, R, R, RI, RI? Will it be faster? */
{ INDEX_op_add2_i32, { R, R, R, R, R, R } },
{ INDEX_op_sub2_i32, { R, R, R, R, R, R } },
{ INDEX_op_brcond2_i32, { R, R, RI, RI } },
{ INDEX_op_mulu2_i32, { R, R, R, R } },
{ INDEX_op_setcond2_i32, { R, R, R, RI, RI } },
#endif
#if TCG_TARGET_HAS_not_i32
{ INDEX_op_not_i32, { R, R } },
#endif
#if TCG_TARGET_HAS_neg_i32
{ INDEX_op_neg_i32, { R, R } },
#endif
#if TCG_TARGET_REG_BITS == 64
{ INDEX_op_mov_i64, { R, R } },
{ INDEX_op_movi_i64, { R } },
{ INDEX_op_ld8u_i64, { R, R } },
{ INDEX_op_ld8s_i64, { R, R } },
{ INDEX_op_ld16u_i64, { R, R } },
{ INDEX_op_ld16s_i64, { R, R } },
{ INDEX_op_ld32u_i64, { R, R } },
{ INDEX_op_ld32s_i64, { R, R } },
{ INDEX_op_ld_i64, { R, R } },
{ INDEX_op_st8_i64, { R, R } },
{ INDEX_op_st16_i64, { R, R } },
{ INDEX_op_st32_i64, { R, R } },
{ INDEX_op_st_i64, { R, R } },
{ INDEX_op_add_i64, { R, RI, RI } },
{ INDEX_op_sub_i64, { R, RI, RI } },
{ INDEX_op_mul_i64, { R, RI, RI } },
#if TCG_TARGET_HAS_div_i64
{ INDEX_op_div_i64, { R, R, R } },
{ INDEX_op_divu_i64, { R, R, R } },
{ INDEX_op_rem_i64, { R, R, R } },
{ INDEX_op_remu_i64, { R, R, R } },
#elif TCG_TARGET_HAS_div2_i64
{ INDEX_op_div2_i64, { R, R, "0", "1", R } },
{ INDEX_op_divu2_i64, { R, R, "0", "1", R } },
#endif
{ INDEX_op_and_i64, { R, RI, RI } },
#if TCG_TARGET_HAS_andc_i64
{ INDEX_op_andc_i64, { R, RI, RI } },
#endif
#if TCG_TARGET_HAS_eqv_i64
{ INDEX_op_eqv_i64, { R, RI, RI } },
#endif
#if TCG_TARGET_HAS_nand_i64
{ INDEX_op_nand_i64, { R, RI, RI } },
#endif
#if TCG_TARGET_HAS_nor_i64
{ INDEX_op_nor_i64, { R, RI, RI } },
#endif
{ INDEX_op_or_i64, { R, RI, RI } },
#if TCG_TARGET_HAS_orc_i64
{ INDEX_op_orc_i64, { R, RI, RI } },
#endif
{ INDEX_op_xor_i64, { R, RI, RI } },
{ INDEX_op_shl_i64, { R, RI, RI } },
{ INDEX_op_shr_i64, { R, RI, RI } },
{ INDEX_op_sar_i64, { R, RI, RI } },
#if TCG_TARGET_HAS_rot_i64
{ INDEX_op_rotl_i64, { R, RI, RI } },
{ INDEX_op_rotr_i64, { R, RI, RI } },
#endif
#if TCG_TARGET_HAS_deposit_i64
{ INDEX_op_deposit_i64, { R, "0", R } },
#endif
{ INDEX_op_brcond_i64, { R, RI } },
#if TCG_TARGET_HAS_ext8s_i64
{ INDEX_op_ext8s_i64, { R, R } },
#endif
#if TCG_TARGET_HAS_ext16s_i64
{ INDEX_op_ext16s_i64, { R, R } },
#endif
#if TCG_TARGET_HAS_ext32s_i64
{ INDEX_op_ext32s_i64, { R, R } },
#endif
#if TCG_TARGET_HAS_ext8u_i64
{ INDEX_op_ext8u_i64, { R, R } },
#endif
#if TCG_TARGET_HAS_ext16u_i64
{ INDEX_op_ext16u_i64, { R, R } },
#endif
#if TCG_TARGET_HAS_ext32u_i64
{ INDEX_op_ext32u_i64, { R, R } },
#endif
#if TCG_TARGET_HAS_bswap16_i64
{ INDEX_op_bswap16_i64, { R, R } },
#endif
#if TCG_TARGET_HAS_bswap32_i64
{ INDEX_op_bswap32_i64, { R, R } },
#endif
#if TCG_TARGET_HAS_bswap64_i64
{ INDEX_op_bswap64_i64, { R, R } },
#endif
#if TCG_TARGET_HAS_not_i64
{ INDEX_op_not_i64, { R, R } },
#endif
#if TCG_TARGET_HAS_neg_i64
{ INDEX_op_neg_i64, { R, R } },
#endif
#endif /* TCG_TARGET_REG_BITS == 64 */
{ INDEX_op_qemu_ld8u, { R, L } },
{ INDEX_op_qemu_ld8s, { R, L } },
{ INDEX_op_qemu_ld16u, { R, L } },
{ INDEX_op_qemu_ld16s, { R, L } },
{ INDEX_op_qemu_ld32, { R, L } },
#if TCG_TARGET_REG_BITS == 64
{ INDEX_op_qemu_ld32u, { R, L } },
{ INDEX_op_qemu_ld32s, { R, L } },
#endif
{ INDEX_op_qemu_ld64, { R64, L } },
{ INDEX_op_qemu_st8, { R, S } },
{ INDEX_op_qemu_st16, { R, S } },
{ INDEX_op_qemu_st32, { R, S } },
{ INDEX_op_qemu_st64, { R64, S } },
#if TCG_TARGET_HAS_ext8s_i32
{ INDEX_op_ext8s_i32, { R, R } },
#endif
#if TCG_TARGET_HAS_ext16s_i32
{ INDEX_op_ext16s_i32, { R, R } },
#endif
#if TCG_TARGET_HAS_ext8u_i32
{ INDEX_op_ext8u_i32, { R, R } },
#endif
#if TCG_TARGET_HAS_ext16u_i32
{ INDEX_op_ext16u_i32, { R, R } },
#endif
#if TCG_TARGET_HAS_bswap16_i32
{ INDEX_op_bswap16_i32, { R, R } },
#endif
#if TCG_TARGET_HAS_bswap32_i32
{ INDEX_op_bswap32_i32, { R, R } },
#endif
{ -1 },
};
static const int tcg_target_reg_alloc_order[] = {
TCG_REG_R0,
TCG_REG_R1,
TCG_REG_R2,
TCG_REG_R3,
#if 0 /* used for TCG_REG_CALL_STACK */
TCG_REG_R4,
#endif
TCG_REG_R5,
TCG_REG_R6,
TCG_REG_R7,
#if TCG_TARGET_NB_REGS >= 16
TCG_REG_R8,
TCG_REG_R9,
TCG_REG_R10,
TCG_REG_R11,
TCG_REG_R12,
TCG_REG_R13,
TCG_REG_R14,
TCG_REG_R15,
#endif
};
#if MAX_OPC_PARAM_IARGS != 5
# error Fix needed, number of supported input arguments changed!
#endif
static const int tcg_target_call_iarg_regs[] = {
TCG_REG_R0,
TCG_REG_R1,
TCG_REG_R2,
TCG_REG_R3,
#if 0 /* used for TCG_REG_CALL_STACK */
TCG_REG_R4,
#endif
TCG_REG_R5,
#if TCG_TARGET_REG_BITS == 32
/* 32 bit hosts need 2 * MAX_OPC_PARAM_IARGS registers. */
TCG_REG_R6,
TCG_REG_R7,
#if TCG_TARGET_NB_REGS >= 16
TCG_REG_R8,
TCG_REG_R9,
TCG_REG_R10,
#else
# error Too few input registers available
#endif
#endif
};
static const int tcg_target_call_oarg_regs[] = {
TCG_REG_R0,
#if TCG_TARGET_REG_BITS == 32
TCG_REG_R1
#endif
};
#ifndef NDEBUG
static const char *const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
"r00",
"r01",
"r02",
"r03",
"r04",
"r05",
"r06",
"r07",
#if TCG_TARGET_NB_REGS >= 16
"r08",
"r09",
"r10",
"r11",
"r12",
"r13",
"r14",
"r15",
#if TCG_TARGET_NB_REGS >= 32
"r16",
"r17",
"r18",
"r19",
"r20",
"r21",
"r22",
"r23",
"r24",
"r25",
"r26",
"r27",
"r28",
"r29",
"r30",
"r31"
#endif
#endif
};
#endif
static void patch_reloc(uint8_t *code_ptr, int type,
tcg_target_long value, tcg_target_long addend)
{
/* tcg_out_reloc always uses the same type, addend. */
assert(type == sizeof(tcg_target_long));
assert(addend == 0);
assert(value != 0);
*(tcg_target_long *)code_ptr = value;
}
/* Parse target specific constraints. */
static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
{
const char *ct_str = *pct_str;
switch (ct_str[0]) {
case 'r':
case 'L': /* qemu_ld constraint */
case 'S': /* qemu_st constraint */
ct->ct |= TCG_CT_REG;
tcg_regset_set32(ct->u.regs, 0, BIT(TCG_TARGET_NB_REGS) - 1);
break;
default:
return -1;
}
ct_str++;
*pct_str = ct_str;
return 0;
}
#if defined(CONFIG_DEBUG_TCG_INTERPRETER)
/* Show current bytecode. Used by tcg interpreter. */
void tci_disas(uint8_t opc)
{
const TCGOpDef *def = &tcg_op_defs[opc];
fprintf(stderr, "TCG %s %u, %u, %u\n",
def->name, def->nb_oargs, def->nb_iargs, def->nb_cargs);
}
#endif
/* Write value (native size). */
static void tcg_out_i(TCGContext *s, tcg_target_ulong v)
{
*(tcg_target_ulong *)s->code_ptr = v;
s->code_ptr += sizeof(tcg_target_ulong);
}
/* Write 64 bit value. */
static void tcg_out64(TCGContext *s, uint64_t v)
{
*(uint64_t *)s->code_ptr = v;
s->code_ptr += sizeof(v);
}
/* Write opcode. */
static void tcg_out_op_t(TCGContext *s, TCGOpcode op)
{
tcg_out8(s, op);
tcg_out8(s, 0);
}
/* Write register. */
static void tcg_out_r(TCGContext *s, TCGArg t0)
{
assert(t0 < TCG_TARGET_NB_REGS);
tcg_out8(s, t0);
}
/* Write register or constant (native size). */
static void tcg_out_ri(TCGContext *s, int const_arg, TCGArg arg)
{
if (const_arg) {
assert(const_arg == 1);
tcg_out8(s, TCG_CONST);
tcg_out_i(s, arg);
} else {
tcg_out_r(s, arg);
}
}
/* Write register or constant (32 bit). */
static void tcg_out_ri32(TCGContext *s, int const_arg, TCGArg arg)
{
if (const_arg) {
assert(const_arg == 1);
tcg_out8(s, TCG_CONST);
tcg_out32(s, arg);
} else {
tcg_out_r(s, arg);
}
}
#if TCG_TARGET_REG_BITS == 64
/* Write register or constant (64 bit). */
static void tcg_out_ri64(TCGContext *s, int const_arg, TCGArg arg)
{
if (const_arg) {
assert(const_arg == 1);
tcg_out8(s, TCG_CONST);
tcg_out64(s, arg);
} else {
tcg_out_r(s, arg);
}
}
#endif
/* Write label. */
static void tci_out_label(TCGContext *s, TCGArg arg)
{
TCGLabel *label = &s->labels[arg];
if (label->has_value) {
tcg_out_i(s, label->u.value);
assert(label->u.value);
} else {
tcg_out_reloc(s, s->code_ptr, sizeof(tcg_target_ulong), arg, 0);
s->code_ptr += sizeof(tcg_target_ulong);
}
}
static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg1,
tcg_target_long arg2)
{
uint8_t *old_code_ptr = s->code_ptr;
if (type == TCG_TYPE_I32) {
tcg_out_op_t(s, INDEX_op_ld_i32);
tcg_out_r(s, ret);
tcg_out_r(s, arg1);
tcg_out32(s, arg2);
} else {
assert(type == TCG_TYPE_I64);
#if TCG_TARGET_REG_BITS == 64
tcg_out_op_t(s, INDEX_op_ld_i64);
tcg_out_r(s, ret);
tcg_out_r(s, arg1);
assert(arg2 == (int32_t)arg2);
tcg_out32(s, arg2);
#else
TODO();
#endif
}
old_code_ptr[1] = s->code_ptr - old_code_ptr;
}
static void tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg)
{
uint8_t *old_code_ptr = s->code_ptr;
assert(ret != arg);
#if TCG_TARGET_REG_BITS == 32
tcg_out_op_t(s, INDEX_op_mov_i32);
#else
tcg_out_op_t(s, INDEX_op_mov_i64);
#endif
tcg_out_r(s, ret);
tcg_out_r(s, arg);
old_code_ptr[1] = s->code_ptr - old_code_ptr;
}
static void tcg_out_movi(TCGContext *s, TCGType type,
TCGReg t0, tcg_target_long arg)
{
uint8_t *old_code_ptr = s->code_ptr;
uint32_t arg32 = arg;
if (type == TCG_TYPE_I32 || arg == arg32) {
tcg_out_op_t(s, INDEX_op_movi_i32);
tcg_out_r(s, t0);
tcg_out32(s, arg32);
} else {
assert(type == TCG_TYPE_I64);
#if TCG_TARGET_REG_BITS == 64
tcg_out_op_t(s, INDEX_op_movi_i64);
tcg_out_r(s, t0);
tcg_out64(s, arg);
#else
TODO();
#endif
}
old_code_ptr[1] = s->code_ptr - old_code_ptr;
}
static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
const int *const_args)
{
uint8_t *old_code_ptr = s->code_ptr;
tcg_out_op_t(s, opc);
switch (opc) {
case INDEX_op_exit_tb:
tcg_out64(s, args[0]);
break;
case INDEX_op_goto_tb:
if (s->tb_jmp_offset) {
/* Direct jump method. */
assert(args[0] < ARRAY_SIZE(s->tb_jmp_offset));
s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
tcg_out32(s, 0);
} else {
/* Indirect jump method. */
TODO();
}
assert(args[0] < ARRAY_SIZE(s->tb_next_offset));
s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
break;
case INDEX_op_br:
tci_out_label(s, args[0]);
break;
case INDEX_op_call:
tcg_out_ri(s, const_args[0], args[0]);
break;
case INDEX_op_setcond_i32:
tcg_out_r(s, args[0]);
tcg_out_r(s, args[1]);
tcg_out_ri32(s, const_args[2], args[2]);
tcg_out8(s, args[3]); /* condition */
break;
#if TCG_TARGET_REG_BITS == 32
case INDEX_op_setcond2_i32:
/* setcond2_i32 cond, t0, t1_low, t1_high, t2_low, t2_high */
tcg_out_r(s, args[0]);
tcg_out_r(s, args[1]);
tcg_out_r(s, args[2]);
tcg_out_ri32(s, const_args[3], args[3]);
tcg_out_ri32(s, const_args[4], args[4]);
tcg_out8(s, args[5]); /* condition */
break;
#elif TCG_TARGET_REG_BITS == 64
case INDEX_op_setcond_i64:
tcg_out_r(s, args[0]);
tcg_out_r(s, args[1]);
tcg_out_ri64(s, const_args[2], args[2]);
tcg_out8(s, args[3]); /* condition */
break;
#endif
case INDEX_op_movi_i32:
TODO(); /* Handled by tcg_out_movi? */
break;
case INDEX_op_ld8u_i32:
case INDEX_op_ld8s_i32:
case INDEX_op_ld16u_i32:
case INDEX_op_ld16s_i32:
case INDEX_op_ld_i32:
case INDEX_op_st8_i32:
case INDEX_op_st16_i32:
case INDEX_op_st_i32:
case INDEX_op_ld8u_i64:
case INDEX_op_ld8s_i64:
case INDEX_op_ld16u_i64:
case INDEX_op_ld16s_i64:
case INDEX_op_ld32u_i64:
case INDEX_op_ld32s_i64:
case INDEX_op_ld_i64:
case INDEX_op_st8_i64:
case INDEX_op_st16_i64:
case INDEX_op_st32_i64:
case INDEX_op_st_i64:
tcg_out_r(s, args[0]);
tcg_out_r(s, args[1]);
assert(args[2] == (int32_t)args[2]);
tcg_out32(s, args[2]);
break;
case INDEX_op_add_i32:
case INDEX_op_sub_i32:
case INDEX_op_mul_i32:
case INDEX_op_and_i32:
case INDEX_op_andc_i32: /* Optional (TCG_TARGET_HAS_andc_i32). */
case INDEX_op_eqv_i32: /* Optional (TCG_TARGET_HAS_eqv_i32). */
case INDEX_op_nand_i32: /* Optional (TCG_TARGET_HAS_nand_i32). */
case INDEX_op_nor_i32: /* Optional (TCG_TARGET_HAS_nor_i32). */
case INDEX_op_or_i32:
case INDEX_op_orc_i32: /* Optional (TCG_TARGET_HAS_orc_i32). */
case INDEX_op_xor_i32:
case INDEX_op_shl_i32:
case INDEX_op_shr_i32:
case INDEX_op_sar_i32:
case INDEX_op_rotl_i32: /* Optional (TCG_TARGET_HAS_rot_i32). */
case INDEX_op_rotr_i32: /* Optional (TCG_TARGET_HAS_rot_i32). */
tcg_out_r(s, args[0]);
tcg_out_ri32(s, const_args[1], args[1]);
tcg_out_ri32(s, const_args[2], args[2]);
break;
case INDEX_op_deposit_i32: /* Optional (TCG_TARGET_HAS_deposit_i32). */
tcg_out_r(s, args[0]);
tcg_out_r(s, args[1]);
tcg_out_r(s, args[2]);
assert(args[3] <= UINT8_MAX);
tcg_out8(s, args[3]);
assert(args[4] <= UINT8_MAX);
tcg_out8(s, args[4]);
break;
#if TCG_TARGET_REG_BITS == 64
case INDEX_op_mov_i64:
case INDEX_op_movi_i64:
TODO();
break;
case INDEX_op_add_i64:
case INDEX_op_sub_i64:
case INDEX_op_mul_i64:
case INDEX_op_and_i64:
case INDEX_op_andc_i64: /* Optional (TCG_TARGET_HAS_andc_i64). */
case INDEX_op_eqv_i64: /* Optional (TCG_TARGET_HAS_eqv_i64). */
case INDEX_op_nand_i64: /* Optional (TCG_TARGET_HAS_nand_i64). */
case INDEX_op_nor_i64: /* Optional (TCG_TARGET_HAS_nor_i64). */
case INDEX_op_or_i64:
case INDEX_op_orc_i64: /* Optional (TCG_TARGET_HAS_orc_i64). */
case INDEX_op_xor_i64:
case INDEX_op_shl_i64:
case INDEX_op_shr_i64:
case INDEX_op_sar_i64:
/* TODO: Implementation of rotl_i64, rotr_i64 missing in tci.c. */
case INDEX_op_rotl_i64: /* Optional (TCG_TARGET_HAS_rot_i64). */
case INDEX_op_rotr_i64: /* Optional (TCG_TARGET_HAS_rot_i64). */
tcg_out_r(s, args[0]);
tcg_out_ri64(s, const_args[1], args[1]);
tcg_out_ri64(s, const_args[2], args[2]);
break;
case INDEX_op_deposit_i64: /* Optional (TCG_TARGET_HAS_deposit_i64). */
tcg_out_r(s, args[0]);
tcg_out_r(s, args[1]);
tcg_out_r(s, args[2]);
assert(args[3] <= UINT8_MAX);
tcg_out8(s, args[3]);
assert(args[4] <= UINT8_MAX);
tcg_out8(s, args[4]);
break;
case INDEX_op_div_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
case INDEX_op_divu_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
case INDEX_op_rem_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
case INDEX_op_remu_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
TODO();
break;
case INDEX_op_div2_i64: /* Optional (TCG_TARGET_HAS_div2_i64). */
case INDEX_op_divu2_i64: /* Optional (TCG_TARGET_HAS_div2_i64). */
TODO();
break;
case INDEX_op_brcond_i64:
tcg_out_r(s, args[0]);
tcg_out_ri64(s, const_args[1], args[1]);
tcg_out8(s, args[2]); /* condition */
tci_out_label(s, args[3]);
break;
case INDEX_op_bswap16_i64: /* Optional (TCG_TARGET_HAS_bswap16_i64). */
case INDEX_op_bswap32_i64: /* Optional (TCG_TARGET_HAS_bswap32_i64). */
case INDEX_op_bswap64_i64: /* Optional (TCG_TARGET_HAS_bswap64_i64). */
case INDEX_op_not_i64: /* Optional (TCG_TARGET_HAS_not_i64). */
case INDEX_op_neg_i64: /* Optional (TCG_TARGET_HAS_neg_i64). */
case INDEX_op_ext8s_i64: /* Optional (TCG_TARGET_HAS_ext8s_i64). */
case INDEX_op_ext8u_i64: /* Optional (TCG_TARGET_HAS_ext8u_i64). */
case INDEX_op_ext16s_i64: /* Optional (TCG_TARGET_HAS_ext16s_i64). */
case INDEX_op_ext16u_i64: /* Optional (TCG_TARGET_HAS_ext16u_i64). */
case INDEX_op_ext32s_i64: /* Optional (TCG_TARGET_HAS_ext32s_i64). */
case INDEX_op_ext32u_i64: /* Optional (TCG_TARGET_HAS_ext32u_i64). */
#endif /* TCG_TARGET_REG_BITS == 64 */
case INDEX_op_neg_i32: /* Optional (TCG_TARGET_HAS_neg_i32). */
case INDEX_op_not_i32: /* Optional (TCG_TARGET_HAS_not_i32). */
case INDEX_op_ext8s_i32: /* Optional (TCG_TARGET_HAS_ext8s_i32). */
case INDEX_op_ext16s_i32: /* Optional (TCG_TARGET_HAS_ext16s_i32). */
case INDEX_op_ext8u_i32: /* Optional (TCG_TARGET_HAS_ext8u_i32). */
case INDEX_op_ext16u_i32: /* Optional (TCG_TARGET_HAS_ext16u_i32). */
case INDEX_op_bswap16_i32: /* Optional (TCG_TARGET_HAS_bswap16_i32). */
case INDEX_op_bswap32_i32: /* Optional (TCG_TARGET_HAS_bswap32_i32). */
tcg_out_r(s, args[0]);
tcg_out_r(s, args[1]);
break;
case INDEX_op_div_i32: /* Optional (TCG_TARGET_HAS_div_i32). */
case INDEX_op_divu_i32: /* Optional (TCG_TARGET_HAS_div_i32). */
case INDEX_op_rem_i32: /* Optional (TCG_TARGET_HAS_div_i32). */
case INDEX_op_remu_i32: /* Optional (TCG_TARGET_HAS_div_i32). */
tcg_out_r(s, args[0]);
tcg_out_ri32(s, const_args[1], args[1]);
tcg_out_ri32(s, const_args[2], args[2]);
break;
case INDEX_op_div2_i32: /* Optional (TCG_TARGET_HAS_div2_i32). */
case INDEX_op_divu2_i32: /* Optional (TCG_TARGET_HAS_div2_i32). */
TODO();
break;
#if TCG_TARGET_REG_BITS == 32
case INDEX_op_add2_i32:
case INDEX_op_sub2_i32:
tcg_out_r(s, args[0]);
tcg_out_r(s, args[1]);
tcg_out_r(s, args[2]);
tcg_out_r(s, args[3]);
tcg_out_r(s, args[4]);
tcg_out_r(s, args[5]);
break;
case INDEX_op_brcond2_i32:
tcg_out_r(s, args[0]);
tcg_out_r(s, args[1]);
tcg_out_ri32(s, const_args[2], args[2]);
tcg_out_ri32(s, const_args[3], args[3]);
tcg_out8(s, args[4]); /* condition */
tci_out_label(s, args[5]);
break;
case INDEX_op_mulu2_i32:
tcg_out_r(s, args[0]);
tcg_out_r(s, args[1]);
tcg_out_r(s, args[2]);
tcg_out_r(s, args[3]);
break;
#endif
case INDEX_op_brcond_i32:
tcg_out_r(s, args[0]);
tcg_out_ri32(s, const_args[1], args[1]);
tcg_out8(s, args[2]); /* condition */
tci_out_label(s, args[3]);
break;
case INDEX_op_qemu_ld8u:
case INDEX_op_qemu_ld8s:
case INDEX_op_qemu_ld16u:
case INDEX_op_qemu_ld16s:
case INDEX_op_qemu_ld32:
#if TCG_TARGET_REG_BITS == 64
case INDEX_op_qemu_ld32s:
case INDEX_op_qemu_ld32u:
#endif
tcg_out_r(s, *args++);
tcg_out_r(s, *args++);
#if TARGET_LONG_BITS > TCG_TARGET_REG_BITS
tcg_out_r(s, *args++);
#endif
#ifdef CONFIG_SOFTMMU
tcg_out_i(s, *args);
#endif
break;
case INDEX_op_qemu_ld64:
tcg_out_r(s, *args++);
#if TCG_TARGET_REG_BITS == 32
tcg_out_r(s, *args++);
#endif
tcg_out_r(s, *args++);
#if TARGET_LONG_BITS > TCG_TARGET_REG_BITS
tcg_out_r(s, *args++);
#endif
#ifdef CONFIG_SOFTMMU
tcg_out_i(s, *args);
#endif
break;
case INDEX_op_qemu_st8:
case INDEX_op_qemu_st16:
case INDEX_op_qemu_st32:
tcg_out_r(s, *args++);
tcg_out_r(s, *args++);
#if TARGET_LONG_BITS > TCG_TARGET_REG_BITS
tcg_out_r(s, *args++);
#endif
#ifdef CONFIG_SOFTMMU
tcg_out_i(s, *args);
#endif
break;
case INDEX_op_qemu_st64:
tcg_out_r(s, *args++);
#if TCG_TARGET_REG_BITS == 32
tcg_out_r(s, *args++);
#endif
tcg_out_r(s, *args++);
#if TARGET_LONG_BITS > TCG_TARGET_REG_BITS
tcg_out_r(s, *args++);
#endif
#ifdef CONFIG_SOFTMMU
tcg_out_i(s, *args);
#endif
break;
case INDEX_op_end:
TODO();
break;
default:
fprintf(stderr, "Missing: %s\n", tcg_op_defs[opc].name);
tcg_abort();
}
old_code_ptr[1] = s->code_ptr - old_code_ptr;
}
static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg, TCGReg arg1,
tcg_target_long arg2)
{
uint8_t *old_code_ptr = s->code_ptr;
if (type == TCG_TYPE_I32) {
tcg_out_op_t(s, INDEX_op_st_i32);
tcg_out_r(s, arg);
tcg_out_r(s, arg1);
tcg_out32(s, arg2);
} else {
assert(type == TCG_TYPE_I64);
#if TCG_TARGET_REG_BITS == 64
tcg_out_op_t(s, INDEX_op_st_i64);
tcg_out_r(s, arg);
tcg_out_r(s, arg1);
tcg_out32(s, arg2);
#else
TODO();
#endif
}
old_code_ptr[1] = s->code_ptr - old_code_ptr;
}
/* Test if a constant matches the constraint. */
static int tcg_target_const_match(tcg_target_long val,
const TCGArgConstraint *arg_ct)
{
/* No need to return 0 or 1, 0 or != 0 is good enough. */
return arg_ct->ct & TCG_CT_CONST;
}
static void tcg_target_init(TCGContext *s)
{
#if defined(CONFIG_DEBUG_TCG_INTERPRETER)
const char *envval = getenv("DEBUG_TCG");
if (envval) {
qemu_set_log(strtol(envval, NULL, 0));
}
#endif
/* The current code uses uint8_t for tcg operations. */
assert(ARRAY_SIZE(tcg_op_defs) <= UINT8_MAX);
/* Registers available for 32 bit operations. */
tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0,
BIT(TCG_TARGET_NB_REGS) - 1);
/* Registers available for 64 bit operations. */
tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I64], 0,
BIT(TCG_TARGET_NB_REGS) - 1);
/* TODO: Which registers should be set here? */
tcg_regset_set32(tcg_target_call_clobber_regs, 0,
BIT(TCG_TARGET_NB_REGS) - 1);
tcg_regset_clear(s->reserved_regs);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK);
tcg_add_target_add_op_defs(tcg_target_op_defs);
/* We use negative offsets from "sp" so that we can distinguish
stores that might pretend to be call arguments. */
tcg_set_frame(s, TCG_REG_CALL_STACK,
-CPU_TEMP_BUF_NLONGS * sizeof(long),
CPU_TEMP_BUF_NLONGS * sizeof(long));
}
/* Generate global QEMU prologue and epilogue code. */
static inline void tcg_target_qemu_prologue(TCGContext *s)
{
}
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