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[v2,09/23] riscv: tcg-target: Add the instruction emitters

Message ID c740aca183675625bb9cf3ce7b9e8b9d431ca694.1545246859.git.alistair.francis@wdc.com (mailing list archive)
State New, archived
Headers show
Series Add RISC-V TCG backend support | expand

Commit Message

Alistair Francis Dec. 19, 2018, 7:17 p.m. UTC
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>
---
 tcg/riscv/tcg-target.inc.c | 48 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
diff mbox series

Patch

diff --git a/tcg/riscv/tcg-target.inc.c b/tcg/riscv/tcg-target.inc.c
index 08838027cd..d198cfd5f7 100644
--- a/tcg/riscv/tcg-target.inc.c
+++ b/tcg/riscv/tcg-target.inc.c
@@ -374,3 +374,51 @@  static int32_t encode_uj(RISCVInsn opc, TCGReg rd, uint32_t imm)
 {
     return opc | (rd & 0x1f) << 7 | encode_ujimm20(imm);
 }
+
+/*
+ * RISC-V instruction emitters
+ */
+
+static void tcg_out_opc_reg(TCGContext *s, RISCVInsn opc,
+                            TCGReg rd, TCGReg rs1, TCGReg rs2)
+{
+    tcg_out32(s, encode_r(opc, rd, rs1, rs2));
+}
+
+static void tcg_out_opc_imm(TCGContext *s, RISCVInsn opc,
+                            TCGReg rd, TCGReg rs1, TCGArg imm)
+{
+    tcg_out32(s, encode_i(opc, rd, rs1, imm));
+}
+
+static void tcg_out_opc_store(TCGContext *s, RISCVInsn opc,
+                              TCGReg rs1, TCGReg rs2, uint32_t imm)
+{
+    tcg_out32(s, encode_s(opc, rs1, rs2, imm));
+}
+
+static void tcg_out_opc_branch(TCGContext *s, RISCVInsn opc,
+                               TCGReg rs1, TCGReg rs2, uint32_t imm)
+{
+    tcg_out32(s, encode_sb(opc, rs1, rs2, imm));
+}
+
+static void tcg_out_opc_upper(TCGContext *s, RISCVInsn opc,
+                              TCGReg rd, uint32_t imm)
+{
+    tcg_out32(s, encode_u(opc, rd, imm));
+}
+
+static void tcg_out_opc_jump(TCGContext *s, RISCVInsn opc,
+                             TCGReg rd, uint32_t imm)
+{
+    tcg_out32(s, encode_uj(opc, rd, imm));
+}
+
+static void tcg_out_nop_fill(tcg_insn_unit *p, int count)
+{
+    int i;
+    for (i = 0; i < count; ++i) {
+        p[i] = encode_i(OPC_ADDI, TCG_REG_ZERO, TCG_REG_ZERO, 0);
+    }
+}