diff options
Diffstat (limited to 'target/xtensa/translate.c')
| -rw-r--r-- | target/xtensa/translate.c | 53 |
1 files changed, 16 insertions, 37 deletions
diff --git a/target/xtensa/translate.c b/target/xtensa/translate.c index 46e1338448..a435d9c36c 100644 --- a/target/xtensa/translate.c +++ b/target/xtensa/translate.c @@ -53,7 +53,7 @@ struct DisasContext { uint32_t pc; int cring; int ring; - uint32_t lbeg; + uint32_t lbeg_off; uint32_t lend; bool sar_5bit; @@ -390,11 +390,9 @@ static void gen_jump(DisasContext *dc, TCGv dest) static void gen_jumpi(DisasContext *dc, uint32_t dest, int slot) { TCGv_i32 tmp = tcg_const_i32(dest); -#ifndef CONFIG_USER_ONLY if (((dc->base.pc_first ^ dest) & TARGET_PAGE_MASK) != 0) { slot = -1; } -#endif gen_jump_slot(dc, tmp, slot); tcg_temp_free(tmp); } @@ -420,25 +418,25 @@ static void gen_callw(DisasContext *dc, int callinc, TCGv_i32 dest) static void gen_callwi(DisasContext *dc, int callinc, uint32_t dest, int slot) { TCGv_i32 tmp = tcg_const_i32(dest); -#ifndef CONFIG_USER_ONLY if (((dc->base.pc_first ^ dest) & TARGET_PAGE_MASK) != 0) { slot = -1; } -#endif gen_callw_slot(dc, callinc, tmp, slot); tcg_temp_free(tmp); } static bool gen_check_loop_end(DisasContext *dc, int slot) { - if (option_enabled(dc, XTENSA_OPTION_LOOP) && - !(dc->base.tb->flags & XTENSA_TBFLAG_EXCM) && - dc->base.pc_next == dc->lend) { + if (dc->base.pc_next == dc->lend) { TCGLabel *label = gen_new_label(); tcg_gen_brcondi_i32(TCG_COND_EQ, cpu_SR[LCOUNT], 0, label); tcg_gen_subi_i32(cpu_SR[LCOUNT], cpu_SR[LCOUNT], 1); - gen_jumpi(dc, dc->lbeg, slot); + if (dc->lbeg_off) { + gen_jumpi(dc, dc->base.pc_next - dc->lbeg_off, slot); + } else { + gen_jump(dc, cpu_SR[LBEG]); + } gen_set_label(label); gen_jumpi(dc, dc->base.pc_next, -1); return true; @@ -534,16 +532,6 @@ static void gen_rsr(DisasContext *dc, TCGv_i32 d, uint32_t sr) } } -static void gen_wsr_lbeg(DisasContext *dc, uint32_t sr, TCGv_i32 s) -{ - gen_helper_wsr_lbeg(cpu_env, s); -} - -static void gen_wsr_lend(DisasContext *dc, uint32_t sr, TCGv_i32 s) -{ - gen_helper_wsr_lend(cpu_env, s); -} - static void gen_wsr_sar(DisasContext *dc, uint32_t sr, TCGv_i32 s) { tcg_gen_andi_i32(cpu_SR[sr], s, 0x3f); @@ -743,8 +731,6 @@ static void gen_wsr(DisasContext *dc, uint32_t sr, TCGv_i32 s) { static void (* const wsr_handler[256])(DisasContext *dc, uint32_t sr, TCGv_i32 v) = { - [LBEG] = gen_wsr_lbeg, - [LEND] = gen_wsr_lend, [SAR] = gen_wsr_sar, [BR] = gen_wsr_br, [LITBASE] = gen_wsr_litbase, @@ -906,13 +892,6 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc) } dc->base.pc_next = dc->pc + len; - if (xtensa_option_enabled(dc->config, XTENSA_OPTION_LOOP) && - dc->lbeg == dc->pc && - ((dc->pc ^ (dc->base.pc_next - 1)) & -dc->config->inst_fetch_width)) { - qemu_log_mask(LOG_GUEST_ERROR, - "unaligned first instruction of a loop (pc = %08x)\n", - dc->pc); - } for (i = 1; i < len; ++i) { b[i] = cpu_ldub_code(env, dc->pc + i); } @@ -1097,8 +1076,10 @@ static void xtensa_tr_init_disas_context(DisasContextBase *dcbase, dc->pc = dc->base.pc_first; dc->ring = tb_flags & XTENSA_TBFLAG_RING_MASK; dc->cring = (tb_flags & XTENSA_TBFLAG_EXCM) ? 0 : dc->ring; - dc->lbeg = env->sregs[LBEG]; - dc->lend = env->sregs[LEND]; + dc->lbeg_off = (dc->base.tb->cs_base & XTENSA_CSBASE_LBEG_OFF_MASK) >> + XTENSA_CSBASE_LBEG_OFF_SHIFT; + dc->lend = (dc->base.tb->cs_base & XTENSA_CSBASE_LEND_MASK) + + (dc->base.pc_first & TARGET_PAGE_MASK); dc->debug = tb_flags & XTENSA_TBFLAG_DEBUG; dc->icount = tb_flags & XTENSA_TBFLAG_ICOUNT; dc->cpenable = (tb_flags & XTENSA_TBFLAG_CPENABLE_MASK) >> @@ -1712,12 +1693,10 @@ static void translate_loop(DisasContext *dc, const uint32_t arg[], const uint32_t par[]) { uint32_t lend = arg[1]; - TCGv_i32 tmp = tcg_const_i32(lend); tcg_gen_subi_i32(cpu_SR[LCOUNT], cpu_R[arg[0]], 1); tcg_gen_movi_i32(cpu_SR[LBEG], dc->base.pc_next); - gen_helper_wsr_lend(cpu_env, tmp); - tcg_temp_free(tmp); + tcg_gen_movi_i32(cpu_SR[LEND], lend); if (par[0] != TCG_COND_NEVER) { TCGLabel *label = gen_new_label(); @@ -4609,7 +4588,7 @@ static const XtensaOpcodeOps core_ops[] = { .translate = translate_wsr, .test_ill = test_ill_wsr, .par = (const uint32_t[]){LBEG}, - .op_flags = XTENSA_OP_EXIT_TB_0, + .op_flags = XTENSA_OP_EXIT_TB_M1, .windowed_register_op = 0x1, }, { .name = "wsr.lcount", @@ -4622,7 +4601,7 @@ static const XtensaOpcodeOps core_ops[] = { .translate = translate_wsr, .test_ill = test_ill_wsr, .par = (const uint32_t[]){LEND}, - .op_flags = XTENSA_OP_EXIT_TB_0, + .op_flags = XTENSA_OP_EXIT_TB_M1, .windowed_register_op = 0x1, }, { .name = "wsr.litbase", @@ -5183,7 +5162,7 @@ static const XtensaOpcodeOps core_ops[] = { .translate = translate_xsr, .test_ill = test_ill_xsr, .par = (const uint32_t[]){LBEG}, - .op_flags = XTENSA_OP_EXIT_TB_0, + .op_flags = XTENSA_OP_EXIT_TB_M1, .windowed_register_op = 0x1, }, { .name = "xsr.lcount", @@ -5196,7 +5175,7 @@ static const XtensaOpcodeOps core_ops[] = { .translate = translate_xsr, .test_ill = test_ill_xsr, .par = (const uint32_t[]){LEND}, - .op_flags = XTENSA_OP_EXIT_TB_0, + .op_flags = XTENSA_OP_EXIT_TB_M1, .windowed_register_op = 0x1, }, { .name = "xsr.litbase", |