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[RFC,v3,21/24] riscv: tcg-target: Add the target init code

Message ID d129ecbccbf6830893380006b8cefe2bcee569ce.1544229872.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. 8, 2018, 12:49 a.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 | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
diff mbox series

Patch

diff --git a/tcg/riscv/tcg-target.inc.c b/tcg/riscv/tcg-target.inc.c
index e5a4642609..06e852d470 100644
--- a/tcg/riscv/tcg-target.inc.c
+++ b/tcg/riscv/tcg-target.inc.c
@@ -1850,6 +1850,37 @@  static void tcg_target_qemu_prologue(TCGContext *s)
     tcg_out_opc_imm(s, OPC_JALR, TCG_REG_ZERO, TCG_REG_RA, 0);
 }
 
+static void tcg_target_init(TCGContext *s)
+{
+    tcg_target_available_regs[TCG_TYPE_I32] = 0xffffffff;
+    if (TCG_TARGET_REG_BITS == 64) {
+        tcg_target_available_regs[TCG_TYPE_I64] = 0xffffffff;
+    }
+
+    tcg_target_call_clobber_regs = -1u;
+    tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S0);
+    tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S1);
+    tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S2);
+    tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S3);
+    tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S4);
+    tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S5);
+    tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S6);
+    tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S7);
+    tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S8);
+    tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S9);
+    tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S10);
+    tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S11);
+
+    s->reserved_regs = 0;
+    tcg_regset_set_reg(s->reserved_regs, TCG_REG_ZERO);
+    tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP0);
+    tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP1);
+    tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP2);
+    tcg_regset_set_reg(s->reserved_regs, TCG_REG_SP);
+    tcg_regset_set_reg(s->reserved_regs, TCG_REG_GP);
+    tcg_regset_set_reg(s->reserved_regs, TCG_REG_TP);
+}
+
 typedef struct {
     DebugFrameHeader h;
     uint8_t fde_def_cfa[4];