832 lines
22 KiB
C++
832 lines
22 KiB
C++
/*
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* Tiny Code Generator for QEMU
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*
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* Copyright (c) 2009, 2011 Stefan Weil
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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/* TODO list:
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* - See TODO comments in code.
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*/
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/* Marker for missing code. */
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#define TODO() \
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do { \
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fprintf(stderr, "TODO %s:%u: %s()\n", \
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__FILE__, __LINE__, __func__); \
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tcg_abort(); \
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} while (0)
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/* Bitfield n...m (in 32 bit value). */
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#define BITS(n, m) (((0xffffffffU << (31 - n)) >> (31 - n + m)) << m)
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static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
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{
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switch (op) {
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case INDEX_op_ld8u_i32:
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case INDEX_op_ld8s_i32:
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case INDEX_op_ld16u_i32:
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case INDEX_op_ld16s_i32:
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case INDEX_op_ld_i32:
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case INDEX_op_ld8u_i64:
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case INDEX_op_ld8s_i64:
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case INDEX_op_ld16u_i64:
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case INDEX_op_ld16s_i64:
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case INDEX_op_ld32u_i64:
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case INDEX_op_ld32s_i64:
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case INDEX_op_ld_i64:
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case INDEX_op_not_i32:
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case INDEX_op_not_i64:
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case INDEX_op_neg_i32:
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case INDEX_op_neg_i64:
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case INDEX_op_ext8s_i32:
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case INDEX_op_ext8s_i64:
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case INDEX_op_ext16s_i32:
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case INDEX_op_ext16s_i64:
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case INDEX_op_ext8u_i32:
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case INDEX_op_ext8u_i64:
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case INDEX_op_ext16u_i32:
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case INDEX_op_ext16u_i64:
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case INDEX_op_ext32s_i64:
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case INDEX_op_ext32u_i64:
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case INDEX_op_ext_i32_i64:
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case INDEX_op_extu_i32_i64:
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case INDEX_op_bswap16_i32:
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case INDEX_op_bswap16_i64:
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case INDEX_op_bswap32_i32:
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case INDEX_op_bswap32_i64:
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case INDEX_op_bswap64_i64:
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return C_O1_I1(r, r);
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case INDEX_op_st8_i32:
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case INDEX_op_st16_i32:
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case INDEX_op_st_i32:
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case INDEX_op_st8_i64:
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case INDEX_op_st16_i64:
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case INDEX_op_st32_i64:
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case INDEX_op_st_i64:
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return C_O0_I2(r, r);
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case INDEX_op_div_i32:
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case INDEX_op_div_i64:
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case INDEX_op_divu_i32:
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case INDEX_op_divu_i64:
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case INDEX_op_rem_i32:
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case INDEX_op_rem_i64:
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case INDEX_op_remu_i32:
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case INDEX_op_remu_i64:
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case INDEX_op_add_i32:
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case INDEX_op_add_i64:
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case INDEX_op_sub_i32:
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case INDEX_op_sub_i64:
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case INDEX_op_mul_i32:
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case INDEX_op_mul_i64:
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case INDEX_op_and_i32:
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case INDEX_op_and_i64:
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case INDEX_op_andc_i32:
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case INDEX_op_andc_i64:
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case INDEX_op_eqv_i32:
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case INDEX_op_eqv_i64:
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case INDEX_op_nand_i32:
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case INDEX_op_nand_i64:
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case INDEX_op_nor_i32:
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case INDEX_op_nor_i64:
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case INDEX_op_or_i32:
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case INDEX_op_or_i64:
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case INDEX_op_orc_i32:
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case INDEX_op_orc_i64:
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case INDEX_op_xor_i32:
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case INDEX_op_xor_i64:
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case INDEX_op_shl_i32:
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case INDEX_op_shl_i64:
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case INDEX_op_shr_i32:
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case INDEX_op_shr_i64:
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case INDEX_op_sar_i32:
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case INDEX_op_sar_i64:
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case INDEX_op_rotl_i32:
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case INDEX_op_rotl_i64:
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case INDEX_op_rotr_i32:
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case INDEX_op_rotr_i64:
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case INDEX_op_setcond_i32:
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case INDEX_op_setcond_i64:
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case INDEX_op_deposit_i32:
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case INDEX_op_deposit_i64:
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return C_O1_I2(r, r, r);
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case INDEX_op_brcond_i32:
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case INDEX_op_brcond_i64:
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return C_O0_I2(r, r);
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#if TCG_TARGET_REG_BITS == 32
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/* TODO: Support R, R, R, R, RI, RI? Will it be faster? */
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case INDEX_op_add2_i32:
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case INDEX_op_sub2_i32:
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return C_O2_I4(r, r, r, r, r, r);
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case INDEX_op_brcond2_i32:
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return C_O0_I4(r, r, r, r);
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case INDEX_op_mulu2_i32:
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return C_O2_I2(r, r, r, r);
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case INDEX_op_setcond2_i32:
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return C_O1_I4(r, r, r, r, r);
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#endif
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case INDEX_op_qemu_ld_i32:
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return (TARGET_LONG_BITS <= TCG_TARGET_REG_BITS
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? C_O1_I1(r, r)
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: C_O1_I2(r, r, r));
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case INDEX_op_qemu_ld_i64:
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return (TCG_TARGET_REG_BITS == 64 ? C_O1_I1(r, r)
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: TARGET_LONG_BITS <= TCG_TARGET_REG_BITS ? C_O2_I1(r, r, r)
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: C_O2_I2(r, r, r, r));
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case INDEX_op_qemu_st_i32:
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return (TARGET_LONG_BITS <= TCG_TARGET_REG_BITS
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? C_O0_I2(r, r)
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: C_O0_I3(r, r, r));
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case INDEX_op_qemu_st_i64:
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return (TCG_TARGET_REG_BITS == 64 ? C_O0_I2(r, r)
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: TARGET_LONG_BITS <= TCG_TARGET_REG_BITS ? C_O0_I3(r, r, r)
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: C_O0_I4(r, r, r, r));
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default:
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g_assert_not_reached();
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}
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}
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static const int tcg_target_reg_alloc_order[] = {
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TCG_REG_R0,
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TCG_REG_R1,
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TCG_REG_R2,
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TCG_REG_R3,
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TCG_REG_R4,
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TCG_REG_R5,
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TCG_REG_R6,
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TCG_REG_R7,
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TCG_REG_R8,
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TCG_REG_R9,
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TCG_REG_R10,
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TCG_REG_R11,
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TCG_REG_R12,
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TCG_REG_R13,
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TCG_REG_R14,
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TCG_REG_R15,
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};
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#if MAX_OPC_PARAM_IARGS != 6
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# error Fix needed, number of supported input arguments changed!
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#endif
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static const int tcg_target_call_iarg_regs[] = {
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TCG_REG_R0,
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TCG_REG_R1,
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TCG_REG_R2,
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TCG_REG_R3,
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TCG_REG_R4,
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TCG_REG_R5,
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#if TCG_TARGET_REG_BITS == 32
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/* 32 bit hosts need 2 * MAX_OPC_PARAM_IARGS registers. */
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TCG_REG_R6,
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TCG_REG_R7,
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TCG_REG_R8,
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TCG_REG_R9,
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TCG_REG_R10,
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TCG_REG_R11,
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#endif
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};
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static const int tcg_target_call_oarg_regs[] = {
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TCG_REG_R0,
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#if TCG_TARGET_REG_BITS == 32
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TCG_REG_R1
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#endif
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};
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#ifdef CONFIG_DEBUG_TCG
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static const char *const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
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"r00",
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"r01",
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"r02",
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"r03",
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"r04",
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"r05",
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"r06",
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"r07",
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"r08",
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"r09",
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"r10",
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"r11",
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"r12",
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"r13",
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"r14",
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"r15",
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};
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#endif
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static bool patch_reloc(tcg_insn_unit *code_ptr, int type,
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intptr_t value, intptr_t addend)
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{
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/* tcg_out_reloc always uses the same type, addend. */
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tcg_debug_assert(type == sizeof(tcg_target_long));
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tcg_debug_assert(addend == 0);
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tcg_debug_assert(value != 0);
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if (TCG_TARGET_REG_BITS == 32) {
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tcg_patch32(code_ptr, value);
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} else {
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tcg_patch64(code_ptr, value);
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}
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return true;
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}
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/* Write value (native size). */
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static void tcg_out_i(TCGContext *s, tcg_target_ulong v)
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{
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if (TCG_TARGET_REG_BITS == 32) {
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tcg_out32(s, v);
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} else {
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tcg_out64(s, v);
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}
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}
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/* Write opcode. */
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static void tcg_out_op_t(TCGContext *s, TCGOpcode op)
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{
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tcg_out8(s, op);
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tcg_out8(s, 0);
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}
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/* Write register. */
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static void tcg_out_r(TCGContext *s, TCGArg t0)
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{
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tcg_debug_assert(t0 < TCG_TARGET_NB_REGS);
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tcg_out8(s, t0);
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}
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/* Write label. */
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static void tci_out_label(TCGContext *s, TCGLabel *label)
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{
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if (label->has_value) {
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tcg_out_i(s, label->u.value);
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tcg_debug_assert(label->u.value);
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} else {
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tcg_out_reloc(s, s->code_ptr, sizeof(tcg_target_ulong), label, 0);
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s->code_ptr += sizeof(tcg_target_ulong);
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}
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}
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static void stack_bounds_check(TCGReg base, target_long offset)
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{
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if (base == TCG_REG_CALL_STACK) {
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tcg_debug_assert(offset < 0);
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tcg_debug_assert(offset >= -(CPU_TEMP_BUF_NLONGS * sizeof(long)));
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}
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}
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static void tcg_out_op_l(TCGContext *s, TCGOpcode op, TCGLabel *l0)
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{
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uint8_t *old_code_ptr = s->code_ptr;
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tcg_out_op_t(s, op);
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tci_out_label(s, l0);
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old_code_ptr[1] = s->code_ptr - old_code_ptr;
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}
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static void tcg_out_op_p(TCGContext *s, TCGOpcode op, void *p0)
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{
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uint8_t *old_code_ptr = s->code_ptr;
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tcg_out_op_t(s, op);
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tcg_out_i(s, (uintptr_t)p0);
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old_code_ptr[1] = s->code_ptr - old_code_ptr;
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}
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static void tcg_out_op_v(TCGContext *s, TCGOpcode op)
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{
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uint8_t *old_code_ptr = s->code_ptr;
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tcg_out_op_t(s, op);
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old_code_ptr[1] = s->code_ptr - old_code_ptr;
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}
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static void tcg_out_op_ri(TCGContext *s, TCGOpcode op, TCGReg r0, int32_t i1)
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{
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uint8_t *old_code_ptr = s->code_ptr;
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tcg_out_op_t(s, op);
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tcg_out_r(s, r0);
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tcg_out32(s, i1);
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old_code_ptr[1] = s->code_ptr - old_code_ptr;
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}
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#if TCG_TARGET_REG_BITS == 64
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static void tcg_out_op_rI(TCGContext *s, TCGOpcode op,
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TCGReg r0, uint64_t i1)
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{
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uint8_t *old_code_ptr = s->code_ptr;
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tcg_out_op_t(s, op);
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tcg_out_r(s, r0);
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tcg_out64(s, i1);
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old_code_ptr[1] = s->code_ptr - old_code_ptr;
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}
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#endif
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static void tcg_out_op_rr(TCGContext *s, TCGOpcode op, TCGReg r0, TCGReg r1)
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{
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uint8_t *old_code_ptr = s->code_ptr;
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tcg_out_op_t(s, op);
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tcg_out_r(s, r0);
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tcg_out_r(s, r1);
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old_code_ptr[1] = s->code_ptr - old_code_ptr;
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}
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static void tcg_out_op_rrm(TCGContext *s, TCGOpcode op,
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TCGReg r0, TCGReg r1, TCGArg m2)
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{
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uint8_t *old_code_ptr = s->code_ptr;
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tcg_out_op_t(s, op);
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tcg_out_r(s, r0);
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tcg_out_r(s, r1);
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tcg_out32(s, m2);
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old_code_ptr[1] = s->code_ptr - old_code_ptr;
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}
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static void tcg_out_op_rrr(TCGContext *s, TCGOpcode op,
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TCGReg r0, TCGReg r1, TCGReg r2)
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{
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uint8_t *old_code_ptr = s->code_ptr;
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tcg_out_op_t(s, op);
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tcg_out_r(s, r0);
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tcg_out_r(s, r1);
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tcg_out_r(s, r2);
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old_code_ptr[1] = s->code_ptr - old_code_ptr;
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}
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static void tcg_out_op_rrs(TCGContext *s, TCGOpcode op,
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TCGReg r0, TCGReg r1, intptr_t i2)
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{
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uint8_t *old_code_ptr = s->code_ptr;
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tcg_out_op_t(s, op);
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tcg_out_r(s, r0);
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tcg_out_r(s, r1);
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tcg_debug_assert(i2 == (int32_t)i2);
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tcg_out32(s, i2);
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old_code_ptr[1] = s->code_ptr - old_code_ptr;
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}
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static void tcg_out_op_rrcl(TCGContext *s, TCGOpcode op,
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TCGReg r0, TCGReg r1, TCGCond c2, TCGLabel *l3)
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{
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uint8_t *old_code_ptr = s->code_ptr;
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tcg_out_op_t(s, op);
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tcg_out_r(s, r0);
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tcg_out_r(s, r1);
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tcg_out8(s, c2);
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tci_out_label(s, l3);
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old_code_ptr[1] = s->code_ptr - old_code_ptr;
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}
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static void tcg_out_op_rrrc(TCGContext *s, TCGOpcode op,
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TCGReg r0, TCGReg r1, TCGReg r2, TCGCond c3)
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{
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uint8_t *old_code_ptr = s->code_ptr;
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tcg_out_op_t(s, op);
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tcg_out_r(s, r0);
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tcg_out_r(s, r1);
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tcg_out_r(s, r2);
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tcg_out8(s, c3);
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old_code_ptr[1] = s->code_ptr - old_code_ptr;
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}
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static void tcg_out_op_rrrm(TCGContext *s, TCGOpcode op,
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TCGReg r0, TCGReg r1, TCGReg r2, TCGArg m3)
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{
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uint8_t *old_code_ptr = s->code_ptr;
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tcg_out_op_t(s, op);
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tcg_out_r(s, r0);
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tcg_out_r(s, r1);
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tcg_out_r(s, r2);
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tcg_out32(s, m3);
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old_code_ptr[1] = s->code_ptr - old_code_ptr;
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}
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static void tcg_out_op_rrrbb(TCGContext *s, TCGOpcode op, TCGReg r0,
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TCGReg r1, TCGReg r2, uint8_t b3, uint8_t b4)
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{
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uint8_t *old_code_ptr = s->code_ptr;
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tcg_out_op_t(s, op);
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tcg_out_r(s, r0);
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tcg_out_r(s, r1);
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tcg_out_r(s, r2);
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tcg_out8(s, b3);
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tcg_out8(s, b4);
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old_code_ptr[1] = s->code_ptr - old_code_ptr;
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}
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static void tcg_out_op_rrrrm(TCGContext *s, TCGOpcode op, TCGReg r0,
|
|
TCGReg r1, TCGReg r2, TCGReg r3, TCGArg m4)
|
|
{
|
|
uint8_t *old_code_ptr = s->code_ptr;
|
|
|
|
tcg_out_op_t(s, op);
|
|
tcg_out_r(s, r0);
|
|
tcg_out_r(s, r1);
|
|
tcg_out_r(s, r2);
|
|
tcg_out_r(s, r3);
|
|
tcg_out32(s, m4);
|
|
|
|
old_code_ptr[1] = s->code_ptr - old_code_ptr;
|
|
}
|
|
|
|
#if TCG_TARGET_REG_BITS == 32
|
|
static void tcg_out_op_rrrr(TCGContext *s, TCGOpcode op,
|
|
TCGReg r0, TCGReg r1, TCGReg r2, TCGReg r3)
|
|
{
|
|
uint8_t *old_code_ptr = s->code_ptr;
|
|
|
|
tcg_out_op_t(s, op);
|
|
tcg_out_r(s, r0);
|
|
tcg_out_r(s, r1);
|
|
tcg_out_r(s, r2);
|
|
tcg_out_r(s, r3);
|
|
|
|
old_code_ptr[1] = s->code_ptr - old_code_ptr;
|
|
}
|
|
|
|
static void tcg_out_op_rrrrcl(TCGContext *s, TCGOpcode op,
|
|
TCGReg r0, TCGReg r1, TCGReg r2, TCGReg r3,
|
|
TCGCond c4, TCGLabel *l5)
|
|
{
|
|
uint8_t *old_code_ptr = s->code_ptr;
|
|
|
|
tcg_out_op_t(s, op);
|
|
tcg_out_r(s, r0);
|
|
tcg_out_r(s, r1);
|
|
tcg_out_r(s, r2);
|
|
tcg_out_r(s, r3);
|
|
tcg_out8(s, c4);
|
|
tci_out_label(s, l5);
|
|
|
|
old_code_ptr[1] = s->code_ptr - old_code_ptr;
|
|
}
|
|
|
|
static void tcg_out_op_rrrrrc(TCGContext *s, TCGOpcode op,
|
|
TCGReg r0, TCGReg r1, TCGReg r2,
|
|
TCGReg r3, TCGReg r4, TCGCond c5)
|
|
{
|
|
uint8_t *old_code_ptr = s->code_ptr;
|
|
|
|
tcg_out_op_t(s, op);
|
|
tcg_out_r(s, r0);
|
|
tcg_out_r(s, r1);
|
|
tcg_out_r(s, r2);
|
|
tcg_out_r(s, r3);
|
|
tcg_out_r(s, r4);
|
|
tcg_out8(s, c5);
|
|
|
|
old_code_ptr[1] = s->code_ptr - old_code_ptr;
|
|
}
|
|
|
|
static void tcg_out_op_rrrrrr(TCGContext *s, TCGOpcode op,
|
|
TCGReg r0, TCGReg r1, TCGReg r2,
|
|
TCGReg r3, TCGReg r4, TCGReg r5)
|
|
{
|
|
uint8_t *old_code_ptr = s->code_ptr;
|
|
|
|
tcg_out_op_t(s, op);
|
|
tcg_out_r(s, r0);
|
|
tcg_out_r(s, r1);
|
|
tcg_out_r(s, r2);
|
|
tcg_out_r(s, r3);
|
|
tcg_out_r(s, r4);
|
|
tcg_out_r(s, r5);
|
|
|
|
old_code_ptr[1] = s->code_ptr - old_code_ptr;
|
|
}
|
|
#endif
|
|
|
|
static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg val, TCGReg base,
|
|
intptr_t offset)
|
|
{
|
|
stack_bounds_check(base, offset);
|
|
switch (type) {
|
|
case TCG_TYPE_I32:
|
|
tcg_out_op_rrs(s, INDEX_op_ld_i32, val, base, offset);
|
|
break;
|
|
#if TCG_TARGET_REG_BITS == 64
|
|
case TCG_TYPE_I64:
|
|
tcg_out_op_rrs(s, INDEX_op_ld_i64, val, base, offset);
|
|
break;
|
|
#endif
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
|
|
static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg)
|
|
{
|
|
switch (type) {
|
|
case TCG_TYPE_I32:
|
|
tcg_out_op_rr(s, INDEX_op_mov_i32, ret, arg);
|
|
break;
|
|
#if TCG_TARGET_REG_BITS == 64
|
|
case TCG_TYPE_I64:
|
|
tcg_out_op_rr(s, INDEX_op_mov_i64, ret, arg);
|
|
break;
|
|
#endif
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void tcg_out_movi(TCGContext *s, TCGType type,
|
|
TCGReg ret, tcg_target_long arg)
|
|
{
|
|
switch (type) {
|
|
case TCG_TYPE_I32:
|
|
tcg_out_op_ri(s, INDEX_op_tci_movi_i32, ret, arg);
|
|
break;
|
|
#if TCG_TARGET_REG_BITS == 64
|
|
case TCG_TYPE_I64:
|
|
tcg_out_op_rI(s, INDEX_op_tci_movi_i64, ret, arg);
|
|
break;
|
|
#endif
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
|
|
static inline void tcg_out_call(TCGContext *s, const tcg_insn_unit *arg)
|
|
{
|
|
uint8_t *old_code_ptr = s->code_ptr;
|
|
tcg_out_op_t(s, INDEX_op_call);
|
|
tcg_out_i(s, (uintptr_t)arg);
|
|
old_code_ptr[1] = s->code_ptr - old_code_ptr;
|
|
}
|
|
|
|
#if TCG_TARGET_REG_BITS == 64
|
|
# define CASE_32_64(x) \
|
|
case glue(glue(INDEX_op_, x), _i64): \
|
|
case glue(glue(INDEX_op_, x), _i32):
|
|
# define CASE_64(x) \
|
|
case glue(glue(INDEX_op_, x), _i64):
|
|
#else
|
|
# define CASE_32_64(x) \
|
|
case glue(glue(INDEX_op_, x), _i32):
|
|
# define CASE_64(x)
|
|
#endif
|
|
|
|
static void tcg_out_op(TCGContext *s, TCGOpcode opc,
|
|
const TCGArg args[TCG_MAX_OP_ARGS],
|
|
const int const_args[TCG_MAX_OP_ARGS])
|
|
{
|
|
switch (opc) {
|
|
case INDEX_op_exit_tb:
|
|
tcg_out_op_p(s, opc, (void *)args[0]);
|
|
break;
|
|
|
|
case INDEX_op_goto_tb:
|
|
tcg_debug_assert(s->tb_jmp_insn_offset == 0);
|
|
/* indirect jump method. */
|
|
tcg_out_op_p(s, opc, s->tb_jmp_target_addr + args[0]);
|
|
set_jmp_reset_offset(s, args[0]);
|
|
break;
|
|
|
|
case INDEX_op_br:
|
|
tcg_out_op_l(s, opc, arg_label(args[0]));
|
|
break;
|
|
|
|
CASE_32_64(setcond)
|
|
tcg_out_op_rrrc(s, opc, args[0], args[1], args[2], args[3]);
|
|
break;
|
|
|
|
#if TCG_TARGET_REG_BITS == 32
|
|
case INDEX_op_setcond2_i32:
|
|
tcg_out_op_rrrrrc(s, opc, args[0], args[1], args[2],
|
|
args[3], args[4], args[5]);
|
|
break;
|
|
#endif
|
|
|
|
CASE_32_64(ld8u)
|
|
CASE_32_64(ld8s)
|
|
CASE_32_64(ld16u)
|
|
CASE_32_64(ld16s)
|
|
case INDEX_op_ld_i32:
|
|
CASE_64(ld32u)
|
|
CASE_64(ld32s)
|
|
CASE_64(ld)
|
|
CASE_32_64(st8)
|
|
CASE_32_64(st16)
|
|
case INDEX_op_st_i32:
|
|
CASE_64(st32)
|
|
CASE_64(st)
|
|
stack_bounds_check(args[1], args[2]);
|
|
tcg_out_op_rrs(s, opc, args[0], args[1], args[2]);
|
|
break;
|
|
|
|
CASE_32_64(add)
|
|
CASE_32_64(sub)
|
|
CASE_32_64(mul)
|
|
CASE_32_64(and)
|
|
CASE_32_64(or)
|
|
CASE_32_64(xor)
|
|
CASE_32_64(andc) /* Optional (TCG_TARGET_HAS_andc_*). */
|
|
CASE_32_64(orc) /* Optional (TCG_TARGET_HAS_orc_*). */
|
|
CASE_32_64(eqv) /* Optional (TCG_TARGET_HAS_eqv_*). */
|
|
CASE_32_64(nand) /* Optional (TCG_TARGET_HAS_nand_*). */
|
|
CASE_32_64(nor) /* Optional (TCG_TARGET_HAS_nor_*). */
|
|
CASE_32_64(shl)
|
|
CASE_32_64(shr)
|
|
CASE_32_64(sar)
|
|
CASE_32_64(rotl) /* Optional (TCG_TARGET_HAS_rot_*). */
|
|
CASE_32_64(rotr) /* Optional (TCG_TARGET_HAS_rot_*). */
|
|
CASE_32_64(div) /* Optional (TCG_TARGET_HAS_div_*). */
|
|
CASE_32_64(divu) /* Optional (TCG_TARGET_HAS_div_*). */
|
|
CASE_32_64(rem) /* Optional (TCG_TARGET_HAS_div_*). */
|
|
CASE_32_64(remu) /* Optional (TCG_TARGET_HAS_div_*). */
|
|
tcg_out_op_rrr(s, opc, args[0], args[1], args[2]);
|
|
break;
|
|
|
|
CASE_32_64(deposit) /* Optional (TCG_TARGET_HAS_deposit_*). */
|
|
{
|
|
TCGArg pos = args[3], len = args[4];
|
|
TCGArg max = opc == INDEX_op_deposit_i32 ? 32 : 64;
|
|
|
|
tcg_debug_assert(pos < max);
|
|
tcg_debug_assert(pos + len <= max);
|
|
|
|
tcg_out_op_rrrbb(s, opc, args[0], args[1], args[2], pos, len);
|
|
}
|
|
break;
|
|
|
|
CASE_32_64(brcond)
|
|
tcg_out_op_rrcl(s, opc, args[0], args[1], args[2], arg_label(args[3]));
|
|
break;
|
|
|
|
CASE_32_64(neg) /* Optional (TCG_TARGET_HAS_neg_*). */
|
|
CASE_32_64(not) /* Optional (TCG_TARGET_HAS_not_*). */
|
|
CASE_32_64(ext8s) /* Optional (TCG_TARGET_HAS_ext8s_*). */
|
|
CASE_32_64(ext8u) /* Optional (TCG_TARGET_HAS_ext8u_*). */
|
|
CASE_32_64(ext16s) /* Optional (TCG_TARGET_HAS_ext16s_*). */
|
|
CASE_32_64(ext16u) /* Optional (TCG_TARGET_HAS_ext16u_*). */
|
|
CASE_64(ext32s) /* Optional (TCG_TARGET_HAS_ext32s_i64). */
|
|
CASE_64(ext32u) /* Optional (TCG_TARGET_HAS_ext32u_i64). */
|
|
CASE_64(ext_i32)
|
|
CASE_64(extu_i32)
|
|
CASE_32_64(bswap16) /* Optional (TCG_TARGET_HAS_bswap16_*). */
|
|
CASE_32_64(bswap32) /* Optional (TCG_TARGET_HAS_bswap32_*). */
|
|
CASE_64(bswap64) /* Optional (TCG_TARGET_HAS_bswap64_i64). */
|
|
tcg_out_op_rr(s, opc, args[0], args[1]);
|
|
break;
|
|
|
|
#if TCG_TARGET_REG_BITS == 32
|
|
case INDEX_op_add2_i32:
|
|
case INDEX_op_sub2_i32:
|
|
tcg_out_op_rrrrrr(s, opc, args[0], args[1], args[2],
|
|
args[3], args[4], args[5]);
|
|
break;
|
|
case INDEX_op_brcond2_i32:
|
|
tcg_out_op_rrrrcl(s, opc, args[0], args[1], args[2],
|
|
args[3], args[4], arg_label(args[5]));
|
|
break;
|
|
case INDEX_op_mulu2_i32:
|
|
tcg_out_op_rrrr(s, opc, args[0], args[1], args[2], args[3]);
|
|
break;
|
|
#endif
|
|
|
|
case INDEX_op_qemu_ld_i32:
|
|
case INDEX_op_qemu_st_i32:
|
|
if (TARGET_LONG_BITS <= TCG_TARGET_REG_BITS) {
|
|
tcg_out_op_rrm(s, opc, args[0], args[1], args[2]);
|
|
} else {
|
|
tcg_out_op_rrrm(s, opc, args[0], args[1], args[2], args[3]);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_qemu_ld_i64:
|
|
case INDEX_op_qemu_st_i64:
|
|
if (TCG_TARGET_REG_BITS == 64) {
|
|
tcg_out_op_rrm(s, opc, args[0], args[1], args[2]);
|
|
} else if (TARGET_LONG_BITS <= TCG_TARGET_REG_BITS) {
|
|
tcg_out_op_rrrm(s, opc, args[0], args[1], args[2], args[3]);
|
|
} else {
|
|
tcg_out_op_rrrrm(s, opc, args[0], args[1],
|
|
args[2], args[3], args[4]);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_mb:
|
|
tcg_out_op_v(s, opc);
|
|
break;
|
|
|
|
case INDEX_op_mov_i32: /* Always emitted via tcg_out_mov. */
|
|
case INDEX_op_mov_i64:
|
|
case INDEX_op_call: /* Always emitted via tcg_out_call. */
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
}
|
|
|
|
static void tcg_out_st(TCGContext *s, TCGType type, TCGReg val, TCGReg base,
|
|
intptr_t offset)
|
|
{
|
|
stack_bounds_check(base, offset);
|
|
switch (type) {
|
|
case TCG_TYPE_I32:
|
|
tcg_out_op_rrs(s, INDEX_op_st_i32, val, base, offset);
|
|
break;
|
|
#if TCG_TARGET_REG_BITS == 64
|
|
case TCG_TYPE_I64:
|
|
tcg_out_op_rrs(s, INDEX_op_st_i64, val, base, offset);
|
|
break;
|
|
#endif
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
|
|
static inline bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val,
|
|
TCGReg base, intptr_t ofs)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* Test if a constant matches the constraint. */
|
|
static int tcg_target_const_match(tcg_target_long val, TCGType type,
|
|
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. */
|
|
tcg_debug_assert(tcg_op_defs_max <= UINT8_MAX);
|
|
|
|
/* Registers available for 32 bit operations. */
|
|
tcg_target_available_regs[TCG_TYPE_I32] = BIT(TCG_TARGET_NB_REGS) - 1;
|
|
/* Registers available for 64 bit operations. */
|
|
tcg_target_available_regs[TCG_TYPE_I64] = BIT(TCG_TARGET_NB_REGS) - 1;
|
|
/* TODO: Which registers should be set here? */
|
|
tcg_target_call_clobber_regs = BIT(TCG_TARGET_NB_REGS) - 1;
|
|
|
|
s->reserved_regs = 0;
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK);
|
|
|
|
/* 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)
|
|
{
|
|
}
|