From 6ade0ce972042a8e6d6a62373644cd1bd0f5ba4f Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Thu, 21 Apr 2022 13:46:20 -0700 Subject: [PATCH] target/xtensa: use tcg_constant_* for remaining opcodes - gen_jumpi passes target PC to the helper; - gen_callw_slot uses callinc (1..3); - gen_brcondi passes immediate field (less than 32 different possible values) to the helper; - disas_xtensa_insn passes PC to the helpers; - translate_entry passes PC, stack register number (0..15) and stack frame size to the helper; - gen_check_exclusive passes PC and boolean flag to the helper; - test_exceptions_retw passes PC to the helper; - gen_check_atomctl passes PC to the helper; - translate_ssai passes immediate shift amount (0..31) to the helper; - gen_waiti passes next PC and an immediate (0..15) to the helper; use tcg_constant_* for the constants listed above. Fold gen_waiti body into the translate_waiti as it's the only user. Reviewed-by: Richard Henderson Signed-off-by: Max Filippov --- target/xtensa/translate.c | 77 +++++++++++++-------------------------- 1 file changed, 25 insertions(+), 52 deletions(-) diff --git a/target/xtensa/translate.c b/target/xtensa/translate.c index 74272c0770d9..b0576d90fa09 100644 --- a/target/xtensa/translate.c +++ b/target/xtensa/translate.c @@ -396,19 +396,15 @@ static int adjust_jump_slot(DisasContext *dc, uint32_t dest, int slot) static void gen_jumpi(DisasContext *dc, uint32_t dest, int slot) { - TCGv_i32 tmp = tcg_const_i32(dest); - gen_jump_slot(dc, tmp, adjust_jump_slot(dc, dest, slot)); - tcg_temp_free(tmp); + gen_jump_slot(dc, tcg_constant_i32(dest), + adjust_jump_slot(dc, dest, slot)); } static void gen_callw_slot(DisasContext *dc, int callinc, TCGv_i32 dest, int slot) { - TCGv_i32 tcallinc = tcg_const_i32(callinc); - tcg_gen_deposit_i32(cpu_SR[PS], cpu_SR[PS], - tcallinc, PS_CALLINC_SHIFT, PS_CALLINC_LEN); - tcg_temp_free(tcallinc); + tcg_constant_i32(callinc), PS_CALLINC_SHIFT, PS_CALLINC_LEN); tcg_gen_movi_i32(cpu_R[callinc << 2], (callinc << 30) | (dc->base.pc_next & 0x3fffffff)); gen_jump_slot(dc, dest, slot); @@ -454,9 +450,7 @@ static void gen_brcond(DisasContext *dc, TCGCond cond, static void gen_brcondi(DisasContext *dc, TCGCond cond, TCGv_i32 t0, uint32_t t1, uint32_t addr) { - TCGv_i32 tmp = tcg_const_i32(t1); - gen_brcond(dc, cond, t0, tmp, addr); - tcg_temp_free(tmp); + gen_brcond(dc, cond, t0, tcg_constant_i32(t1), addr); } static uint32_t test_exceptions_sr(DisasContext *dc, const OpcodeArg arg[], @@ -541,21 +535,6 @@ static MemOp gen_load_store_alignment(DisasContext *dc, MemOp mop, return mop; } -#ifndef CONFIG_USER_ONLY -static void gen_waiti(DisasContext *dc, uint32_t imm4) -{ - TCGv_i32 pc = tcg_const_i32(dc->base.pc_next); - TCGv_i32 intlevel = tcg_const_i32(imm4); - - if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) { - gen_io_start(); - } - gen_helper_waiti(cpu_env, pc, intlevel); - tcg_temp_free(pc); - tcg_temp_free(intlevel); -} -#endif - static bool gen_window_check(DisasContext *dc, uint32_t mask) { unsigned r = 31 - clz32(mask); @@ -1070,17 +1049,15 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc) } if (op_flags & XTENSA_OP_UNDERFLOW) { - TCGv_i32 tmp = tcg_const_i32(dc->pc); + TCGv_i32 pc = tcg_constant_i32(dc->pc); - gen_helper_test_underflow_retw(cpu_env, tmp); - tcg_temp_free(tmp); + gen_helper_test_underflow_retw(cpu_env, pc); } if (op_flags & XTENSA_OP_ALLOCA) { - TCGv_i32 tmp = tcg_const_i32(dc->pc); + TCGv_i32 pc = tcg_constant_i32(dc->pc); - gen_helper_movsp(cpu_env, tmp); - tcg_temp_free(tmp); + gen_helper_movsp(cpu_env, pc); } if (coprocessor && !gen_check_cpenable(dc, coprocessor)) { @@ -1660,13 +1637,10 @@ static uint32_t test_overflow_entry(DisasContext *dc, const OpcodeArg arg[], static void translate_entry(DisasContext *dc, const OpcodeArg arg[], const uint32_t par[]) { - TCGv_i32 pc = tcg_const_i32(dc->pc); - TCGv_i32 s = tcg_const_i32(arg[0].imm); - TCGv_i32 imm = tcg_const_i32(arg[1].imm); + TCGv_i32 pc = tcg_constant_i32(dc->pc); + TCGv_i32 s = tcg_constant_i32(arg[0].imm); + TCGv_i32 imm = tcg_constant_i32(arg[1].imm); gen_helper_entry(cpu_env, pc, s, imm); - tcg_temp_free(imm); - tcg_temp_free(s); - tcg_temp_free(pc); } static void translate_extui(DisasContext *dc, const OpcodeArg arg[], @@ -1746,12 +1720,10 @@ static void gen_check_exclusive(DisasContext *dc, TCGv_i32 addr, bool is_write) static void gen_check_exclusive(DisasContext *dc, TCGv_i32 addr, bool is_write) { if (!option_enabled(dc, XTENSA_OPTION_MPU)) { - TCGv_i32 tpc = tcg_const_i32(dc->pc); - TCGv_i32 write = tcg_const_i32(is_write); + TCGv_i32 pc = tcg_constant_i32(dc->pc); - gen_helper_check_exclusive(cpu_env, tpc, addr, write); - tcg_temp_free(tpc); - tcg_temp_free(write); + gen_helper_check_exclusive(cpu_env, pc, addr, + tcg_constant_i32(is_write)); } } #endif @@ -2128,10 +2100,9 @@ static uint32_t test_exceptions_retw(DisasContext *dc, const OpcodeArg arg[], "Illegal retw instruction(pc = %08x)\n", dc->pc); return XTENSA_OP_ILL; } else { - TCGv_i32 tmp = tcg_const_i32(dc->pc); + TCGv_i32 pc = tcg_constant_i32(dc->pc); - gen_helper_test_ill_retw(cpu_env, tmp); - tcg_temp_free(tmp); + gen_helper_test_ill_retw(cpu_env, pc); return 0; } } @@ -2291,10 +2262,9 @@ static void gen_check_atomctl(DisasContext *dc, TCGv_i32 addr) #else static void gen_check_atomctl(DisasContext *dc, TCGv_i32 addr) { - TCGv_i32 tpc = tcg_const_i32(dc->pc); + TCGv_i32 pc = tcg_constant_i32(dc->pc); - gen_helper_check_atomctl(cpu_env, tpc, addr); - tcg_temp_free(tpc); + gen_helper_check_atomctl(cpu_env, pc, addr); } #endif @@ -2515,9 +2485,7 @@ static void translate_ssa8l(DisasContext *dc, const OpcodeArg arg[], static void translate_ssai(DisasContext *dc, const OpcodeArg arg[], const uint32_t par[]) { - TCGv_i32 tmp = tcg_const_i32(arg[0].imm); - gen_right_shift_sar(dc, tmp); - tcg_temp_free(tmp); + gen_right_shift_sar(dc, tcg_constant_i32(arg[0].imm)); } static void translate_ssl(DisasContext *dc, const OpcodeArg arg[], @@ -2551,7 +2519,12 @@ static void translate_waiti(DisasContext *dc, const OpcodeArg arg[], const uint32_t par[]) { #ifndef CONFIG_USER_ONLY - gen_waiti(dc, arg[0].imm); + TCGv_i32 pc = tcg_constant_i32(dc->base.pc_next); + + if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) { + gen_io_start(); + } + gen_helper_waiti(cpu_env, pc, tcg_constant_i32(arg[0].imm)); #endif }