aeb6326ec5
The port currently does not support "oversize" guests, which means riscv32 can only target 32-bit guests. We will soon be building TCG once for all guests. This implies that we can only support riscv64. Since all Linux distributions target riscv64 not riscv32, this is not much of a restriction and simplifies the code. The brcond2 and setcond2 opcodes are exclusive to 32-bit hosts, so we can and should remove the stubs. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
174 lines
5.7 KiB
C
174 lines
5.7 KiB
C
/*
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* Tiny Code Generator for QEMU
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*
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* Copyright (c) 2018 SiFive, Inc
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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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#ifndef RISCV_TCG_TARGET_H
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#define RISCV_TCG_TARGET_H
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/*
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* We don't support oversize guests.
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* Since we will only build tcg once, this in turn requires a 64-bit host.
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*/
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#if __riscv_xlen != 64
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#error "unsupported code generation mode"
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#endif
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#define TCG_TARGET_REG_BITS 64
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#define TCG_TARGET_INSN_UNIT_SIZE 4
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#define TCG_TARGET_TLB_DISPLACEMENT_BITS 20
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#define TCG_TARGET_NB_REGS 32
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#define MAX_CODE_GEN_BUFFER_SIZE ((size_t)-1)
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typedef enum {
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TCG_REG_ZERO,
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TCG_REG_RA,
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TCG_REG_SP,
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TCG_REG_GP,
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TCG_REG_TP,
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TCG_REG_T0,
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TCG_REG_T1,
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TCG_REG_T2,
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TCG_REG_S0,
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TCG_REG_S1,
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TCG_REG_A0,
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TCG_REG_A1,
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TCG_REG_A2,
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TCG_REG_A3,
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TCG_REG_A4,
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TCG_REG_A5,
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TCG_REG_A6,
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TCG_REG_A7,
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TCG_REG_S2,
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TCG_REG_S3,
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TCG_REG_S4,
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TCG_REG_S5,
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TCG_REG_S6,
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TCG_REG_S7,
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TCG_REG_S8,
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TCG_REG_S9,
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TCG_REG_S10,
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TCG_REG_S11,
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TCG_REG_T3,
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TCG_REG_T4,
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TCG_REG_T5,
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TCG_REG_T6,
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/* aliases */
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TCG_AREG0 = TCG_REG_S0,
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TCG_GUEST_BASE_REG = TCG_REG_S1,
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TCG_REG_TMP0 = TCG_REG_T6,
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TCG_REG_TMP1 = TCG_REG_T5,
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TCG_REG_TMP2 = TCG_REG_T4,
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} TCGReg;
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/* used for function call generation */
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#define TCG_REG_CALL_STACK TCG_REG_SP
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#define TCG_TARGET_STACK_ALIGN 16
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#define TCG_TARGET_CALL_STACK_OFFSET 0
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#define TCG_TARGET_CALL_ARG_I32 TCG_CALL_ARG_NORMAL
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#define TCG_TARGET_CALL_ARG_I64 TCG_CALL_ARG_NORMAL
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#define TCG_TARGET_CALL_ARG_I128 TCG_CALL_ARG_NORMAL
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#define TCG_TARGET_CALL_RET_I128 TCG_CALL_RET_NORMAL
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/* optional instructions */
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#define TCG_TARGET_HAS_movcond_i32 0
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#define TCG_TARGET_HAS_div_i32 1
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#define TCG_TARGET_HAS_rem_i32 1
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#define TCG_TARGET_HAS_div2_i32 0
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#define TCG_TARGET_HAS_rot_i32 0
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#define TCG_TARGET_HAS_deposit_i32 0
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#define TCG_TARGET_HAS_extract_i32 0
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#define TCG_TARGET_HAS_sextract_i32 0
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#define TCG_TARGET_HAS_extract2_i32 0
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#define TCG_TARGET_HAS_add2_i32 1
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#define TCG_TARGET_HAS_sub2_i32 1
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#define TCG_TARGET_HAS_mulu2_i32 0
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#define TCG_TARGET_HAS_muls2_i32 0
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#define TCG_TARGET_HAS_muluh_i32 0
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#define TCG_TARGET_HAS_mulsh_i32 0
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#define TCG_TARGET_HAS_ext8s_i32 1
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#define TCG_TARGET_HAS_ext16s_i32 1
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#define TCG_TARGET_HAS_ext8u_i32 1
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#define TCG_TARGET_HAS_ext16u_i32 1
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#define TCG_TARGET_HAS_bswap16_i32 0
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#define TCG_TARGET_HAS_bswap32_i32 0
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#define TCG_TARGET_HAS_not_i32 1
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#define TCG_TARGET_HAS_neg_i32 1
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#define TCG_TARGET_HAS_andc_i32 0
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#define TCG_TARGET_HAS_orc_i32 0
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#define TCG_TARGET_HAS_eqv_i32 0
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#define TCG_TARGET_HAS_nand_i32 0
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#define TCG_TARGET_HAS_nor_i32 0
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#define TCG_TARGET_HAS_clz_i32 0
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#define TCG_TARGET_HAS_ctz_i32 0
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#define TCG_TARGET_HAS_ctpop_i32 0
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#define TCG_TARGET_HAS_brcond2 1
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#define TCG_TARGET_HAS_setcond2 1
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#define TCG_TARGET_HAS_qemu_st8_i32 0
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#define TCG_TARGET_HAS_movcond_i64 0
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#define TCG_TARGET_HAS_div_i64 1
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#define TCG_TARGET_HAS_rem_i64 1
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#define TCG_TARGET_HAS_div2_i64 0
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#define TCG_TARGET_HAS_rot_i64 0
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#define TCG_TARGET_HAS_deposit_i64 0
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#define TCG_TARGET_HAS_extract_i64 0
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#define TCG_TARGET_HAS_sextract_i64 0
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#define TCG_TARGET_HAS_extract2_i64 0
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#define TCG_TARGET_HAS_extrl_i64_i32 1
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#define TCG_TARGET_HAS_extrh_i64_i32 1
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#define TCG_TARGET_HAS_ext8s_i64 1
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#define TCG_TARGET_HAS_ext16s_i64 1
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#define TCG_TARGET_HAS_ext32s_i64 1
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#define TCG_TARGET_HAS_ext8u_i64 1
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#define TCG_TARGET_HAS_ext16u_i64 1
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#define TCG_TARGET_HAS_ext32u_i64 1
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#define TCG_TARGET_HAS_bswap16_i64 0
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#define TCG_TARGET_HAS_bswap32_i64 0
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#define TCG_TARGET_HAS_bswap64_i64 0
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#define TCG_TARGET_HAS_not_i64 1
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#define TCG_TARGET_HAS_neg_i64 1
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#define TCG_TARGET_HAS_andc_i64 0
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#define TCG_TARGET_HAS_orc_i64 0
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#define TCG_TARGET_HAS_eqv_i64 0
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#define TCG_TARGET_HAS_nand_i64 0
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#define TCG_TARGET_HAS_nor_i64 0
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#define TCG_TARGET_HAS_clz_i64 0
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#define TCG_TARGET_HAS_ctz_i64 0
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#define TCG_TARGET_HAS_ctpop_i64 0
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#define TCG_TARGET_HAS_add2_i64 1
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#define TCG_TARGET_HAS_sub2_i64 1
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#define TCG_TARGET_HAS_mulu2_i64 0
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#define TCG_TARGET_HAS_muls2_i64 0
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#define TCG_TARGET_HAS_muluh_i64 1
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#define TCG_TARGET_HAS_mulsh_i64 1
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#define TCG_TARGET_DEFAULT_MO (0)
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#define TCG_TARGET_NEED_LDST_LABELS
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#define TCG_TARGET_NEED_POOL_LABELS
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#define TCG_TARGET_HAS_MEMORY_BSWAP 0
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#endif
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