From b55a8d9d0bb486c0ad7a34985ec43f22fae930c3 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Sat, 26 Nov 2022 12:42:06 -0800 Subject: tcg: Split out tcg_out_exit_tb MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The INDEX_op_exit_tb opcode needs no register allocation. Split out a dedicated helper function for it. Reviewed-by: Alex Bennée Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson --- tcg/sparc64/tcg-target.c.inc | 39 +++++++++++++++++++++------------------ 1 file changed, 21 insertions(+), 18 deletions(-) (limited to 'tcg/sparc64/tcg-target.c.inc') diff --git a/tcg/sparc64/tcg-target.c.inc b/tcg/sparc64/tcg-target.c.inc index eb913f33c8..d2d8b46815 100644 --- a/tcg/sparc64/tcg-target.c.inc +++ b/tcg/sparc64/tcg-target.c.inc @@ -1428,6 +1428,26 @@ static void tcg_out_qemu_st(TCGContext *s, TCGReg data, TCGReg addr, #endif /* CONFIG_SOFTMMU */ } +static void tcg_out_exit_tb(TCGContext *s, uintptr_t a0) +{ + if (check_fit_ptr(a0, 13)) { + tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN); + tcg_out_movi_imm13(s, TCG_REG_O0, a0); + return; + } else if (USE_REG_TB) { + intptr_t tb_diff = tcg_tbrel_diff(s, (void *)a0); + if (check_fit_ptr(tb_diff, 13)) { + tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN); + /* Note that TCG_REG_TB has been unwound to O1. */ + tcg_out_arithi(s, TCG_REG_O0, TCG_REG_O1, tb_diff, ARITH_ADD); + return; + } + } + tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_I0, a0 & ~0x3ff); + tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN); + tcg_out_arithi(s, TCG_REG_O0, TCG_REG_O0, a0 & 0x3ff, ARITH_OR); +} + static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg args[TCG_MAX_OP_ARGS], const int const_args[TCG_MAX_OP_ARGS]) @@ -1442,24 +1462,6 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, c2 = const_args[2]; switch (opc) { - case INDEX_op_exit_tb: - if (check_fit_ptr(a0, 13)) { - tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN); - tcg_out_movi_imm13(s, TCG_REG_O0, a0); - break; - } else if (USE_REG_TB) { - intptr_t tb_diff = tcg_tbrel_diff(s, (void *)a0); - if (check_fit_ptr(tb_diff, 13)) { - tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN); - /* Note that TCG_REG_TB has been unwound to O1. */ - tcg_out_arithi(s, TCG_REG_O0, TCG_REG_O1, tb_diff, ARITH_ADD); - break; - } - } - tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_I0, a0 & ~0x3ff); - tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN); - tcg_out_arithi(s, TCG_REG_O0, TCG_REG_O0, a0 & 0x3ff, ARITH_OR); - break; case INDEX_op_goto_tb: if (s->tb_jmp_insn_offset) { /* direct jump method */ @@ -1716,6 +1718,7 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, case INDEX_op_mov_i32: /* Always emitted via tcg_out_mov. */ case INDEX_op_mov_i64: case INDEX_op_call: /* Always emitted via tcg_out_call. */ + case INDEX_op_exit_tb: /* Always emitted via tcg_out_exit_tb. */ default: tcg_abort(); } -- cgit v1.2.3