diff options
author | Alistair Francis <Alistair.Francis@wdc.com> | 2018-12-19 19:18:39 +0000 |
---|---|---|
committer | Richard Henderson <richard.henderson@linaro.org> | 2018-12-26 06:40:02 +1100 |
commit | 61535d49881a93b9c765eef0290a47f310eb9067 (patch) | |
tree | dde6297798ae955a4300c76009146d9f3d8b9f6d | |
parent | 27fd64144bebc34a815fd8a69af790b080e80c61 (diff) |
tcg/riscv: Add the out load and store instructions
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Michael Clark <mjc@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <d5d88ff29163788938368bbdbd18815d59cef6a0.1545246859.git.alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
-rw-r--r-- | tcg/riscv/tcg-target.inc.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/tcg/riscv/tcg-target.inc.c b/tcg/riscv/tcg-target.inc.c index 48399480b2..65718df7ad 100644 --- a/tcg/riscv/tcg-target.inc.c +++ b/tcg/riscv/tcg-target.inc.c @@ -630,3 +630,68 @@ static void tcg_out_ext32s(TCGContext *s, TCGReg ret, TCGReg arg) { tcg_out_opc_imm(s, OPC_ADDIW, ret, arg, 0); } + +static void tcg_out_ldst(TCGContext *s, RISCVInsn opc, TCGReg data, + TCGReg addr, intptr_t offset) +{ + intptr_t imm12 = sextreg(offset, 0, 12); + + if (offset != imm12) { + intptr_t diff = offset - (uintptr_t)s->code_ptr; + + if (addr == TCG_REG_ZERO && diff == (int32_t)diff) { + imm12 = sextreg(diff, 0, 12); + tcg_out_opc_upper(s, OPC_AUIPC, TCG_REG_TMP2, diff - imm12); + } else { + tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP2, offset - imm12); + if (addr != TCG_REG_ZERO) { + tcg_out_opc_reg(s, OPC_ADD, TCG_REG_TMP2, TCG_REG_TMP2, addr); + } + } + addr = TCG_REG_TMP2; + } + + switch (opc) { + case OPC_SB: + case OPC_SH: + case OPC_SW: + case OPC_SD: + tcg_out_opc_store(s, opc, addr, data, imm12); + break; + case OPC_LB: + case OPC_LBU: + case OPC_LH: + case OPC_LHU: + case OPC_LW: + case OPC_LWU: + case OPC_LD: + tcg_out_opc_imm(s, opc, data, addr, imm12); + break; + default: + g_assert_not_reached(); + } +} + +static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg arg, + TCGReg arg1, intptr_t arg2) +{ + bool is32bit = (TCG_TARGET_REG_BITS == 32 || type == TCG_TYPE_I32); + tcg_out_ldst(s, is32bit ? OPC_LW : OPC_LD, arg, arg1, arg2); +} + +static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg, + TCGReg arg1, intptr_t arg2) +{ + bool is32bit = (TCG_TARGET_REG_BITS == 32 || type == TCG_TYPE_I32); + tcg_out_ldst(s, is32bit ? OPC_SW : OPC_SD, arg, arg1, arg2); +} + +static bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val, + TCGReg base, intptr_t ofs) +{ + if (val == 0) { + tcg_out_st(s, type, TCG_REG_ZERO, base, ofs); + return true; + } + return false; +} |