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| author | Richard Henderson <rth@twiddle.net> | 2014-03-23 17:15:21 +0000 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2014-05-24 08:45:09 -0700 |
| commit | 7dae901d2d0476945a2dc353bb685501fd365868 (patch) | |
| tree | 1526d88b4e595ae6d76a599c9f23a2d1258a0932 /tcg | |
| parent | f8c9eddb2bd3610cdafbdbc222e460c55c590b5c (diff) | |
| download | qemu-7dae901d2d0476945a2dc353bb685501fd365868.tar.gz qemu-7dae901d2d0476945a2dc353bb685501fd365868.tar.bz2 qemu-7dae901d2d0476945a2dc353bb685501fd365868.zip | |
tcg-mips: Fill the exit_tb delay slot
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/mips/tcg-target.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/tcg/mips/tcg-target.c b/tcg/mips/tcg-target.c index d4236c0828..2d2073f7e9 100644 --- a/tcg/mips/tcg-target.c +++ b/tcg/mips/tcg-target.c @@ -392,8 +392,10 @@ static inline void tcg_out_movi(TCGContext *s, TCGType type, } else if (arg == (uint16_t)arg) { tcg_out_opc_imm(s, OPC_ORI, reg, TCG_REG_ZERO, arg); } else { - tcg_out_opc_imm(s, OPC_LUI, reg, 0, arg >> 16); - tcg_out_opc_imm(s, OPC_ORI, reg, reg, arg & 0xffff); + tcg_out_opc_imm(s, OPC_LUI, reg, TCG_REG_ZERO, arg >> 16); + if (arg & 0xffff) { + tcg_out_opc_imm(s, OPC_ORI, reg, reg, arg & 0xffff); + } } } @@ -1291,12 +1293,21 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, { switch(opc) { case INDEX_op_exit_tb: - tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_V0, args[0]); - if (!tcg_out_opc_jmp(s, OPC_J, tb_ret_addr)) { - tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_AT, (uintptr_t)tb_ret_addr); - tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_AT, 0); + { + uintptr_t a0 = args[0]; + TCGReg b0 = TCG_REG_ZERO; + + if (a0 & ~0xffff) { + tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_V0, a0 & ~0xffff); + b0 = TCG_REG_V0; + } + if (!tcg_out_opc_jmp(s, OPC_J, tb_ret_addr)) { + tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_AT, + (uintptr_t)tb_ret_addr); + tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_AT, 0); + } + tcg_out_opc_imm(s, OPC_ORI, TCG_REG_V0, b0, a0 & 0xffff); } - tcg_out_nop(s); break; case INDEX_op_goto_tb: if (s->tb_jmp_offset) { |