3028 lines
87 KiB
C
3028 lines
87 KiB
C
/*
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* Alpha emulation cpu translation for qemu.
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*
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* Copyright (c) 2007 Jocelyn Mayer
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "cpu.h"
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#include "disas/disas.h"
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#include "qemu/host-utils.h"
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#include "exec/exec-all.h"
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#include "tcg-op.h"
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#include "exec/cpu_ldst.h"
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#include "exec/helper-proto.h"
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#include "exec/helper-gen.h"
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#include "trace-tcg.h"
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#include "exec/log.h"
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#undef ALPHA_DEBUG_DISAS
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#define CONFIG_SOFTFLOAT_INLINE
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#ifdef ALPHA_DEBUG_DISAS
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# define LOG_DISAS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__)
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#else
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# define LOG_DISAS(...) do { } while (0)
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#endif
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typedef struct DisasContext DisasContext;
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struct DisasContext {
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struct TranslationBlock *tb;
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uint64_t pc;
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#ifndef CONFIG_USER_ONLY
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uint64_t palbr;
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#endif
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int mem_idx;
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/* Current rounding mode for this TB. */
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int tb_rm;
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/* Current flush-to-zero setting for this TB. */
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int tb_ftz;
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/* implver value for this CPU. */
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int implver;
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/* The set of registers active in the current context. */
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TCGv *ir;
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/* Temporaries for $31 and $f31 as source and destination. */
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TCGv zero;
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TCGv sink;
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/* Temporary for immediate constants. */
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TCGv lit;
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bool singlestep_enabled;
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};
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/* Return values from translate_one, indicating the state of the TB.
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Note that zero indicates that we are not exiting the TB. */
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typedef enum {
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NO_EXIT,
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/* We have emitted one or more goto_tb. No fixup required. */
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EXIT_GOTO_TB,
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/* We are not using a goto_tb (for whatever reason), but have updated
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the PC (for whatever reason), so there's no need to do it again on
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exiting the TB. */
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EXIT_PC_UPDATED,
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/* We are exiting the TB, but have neither emitted a goto_tb, nor
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updated the PC for the next instruction to be executed. */
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EXIT_PC_STALE,
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/* We are ending the TB with a noreturn function call, e.g. longjmp.
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No following code will be executed. */
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EXIT_NORETURN,
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} ExitStatus;
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/* global register indexes */
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static TCGv_env cpu_env;
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static TCGv cpu_std_ir[31];
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static TCGv cpu_fir[31];
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static TCGv cpu_pc;
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static TCGv cpu_lock_addr;
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static TCGv cpu_lock_value;
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#ifndef CONFIG_USER_ONLY
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static TCGv cpu_pal_ir[31];
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#endif
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#include "exec/gen-icount.h"
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void alpha_translate_init(void)
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{
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#define DEF_VAR(V) { &cpu_##V, #V, offsetof(CPUAlphaState, V) }
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typedef struct { TCGv *var; const char *name; int ofs; } GlobalVar;
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static const GlobalVar vars[] = {
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DEF_VAR(pc),
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DEF_VAR(lock_addr),
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DEF_VAR(lock_value),
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};
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#undef DEF_VAR
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/* Use the symbolic register names that match the disassembler. */
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static const char greg_names[31][4] = {
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"v0", "t0", "t1", "t2", "t3", "t4", "t5", "t6",
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"t7", "s0", "s1", "s2", "s3", "s4", "s5", "fp",
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"a0", "a1", "a2", "a3", "a4", "a5", "t8", "t9",
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"t10", "t11", "ra", "t12", "at", "gp", "sp"
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};
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static const char freg_names[31][4] = {
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"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
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"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
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"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
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"f24", "f25", "f26", "f27", "f28", "f29", "f30"
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};
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#ifndef CONFIG_USER_ONLY
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static const char shadow_names[8][8] = {
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"pal_t7", "pal_s0", "pal_s1", "pal_s2",
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"pal_s3", "pal_s4", "pal_s5", "pal_t11"
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};
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#endif
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static bool done_init = 0;
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int i;
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if (done_init) {
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return;
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}
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done_init = 1;
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cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
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tcg_ctx.tcg_env = cpu_env;
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for (i = 0; i < 31; i++) {
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cpu_std_ir[i] = tcg_global_mem_new_i64(cpu_env,
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offsetof(CPUAlphaState, ir[i]),
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greg_names[i]);
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}
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for (i = 0; i < 31; i++) {
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cpu_fir[i] = tcg_global_mem_new_i64(cpu_env,
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offsetof(CPUAlphaState, fir[i]),
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freg_names[i]);
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}
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#ifndef CONFIG_USER_ONLY
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memcpy(cpu_pal_ir, cpu_std_ir, sizeof(cpu_pal_ir));
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for (i = 0; i < 8; i++) {
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int r = (i == 7 ? 25 : i + 8);
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cpu_pal_ir[r] = tcg_global_mem_new_i64(cpu_env,
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offsetof(CPUAlphaState,
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shadow[i]),
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shadow_names[i]);
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}
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#endif
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for (i = 0; i < ARRAY_SIZE(vars); ++i) {
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const GlobalVar *v = &vars[i];
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*v->var = tcg_global_mem_new_i64(cpu_env, v->ofs, v->name);
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}
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}
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static TCGv load_zero(DisasContext *ctx)
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{
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if (TCGV_IS_UNUSED_I64(ctx->zero)) {
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ctx->zero = tcg_const_i64(0);
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}
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return ctx->zero;
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}
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static TCGv dest_sink(DisasContext *ctx)
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{
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if (TCGV_IS_UNUSED_I64(ctx->sink)) {
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ctx->sink = tcg_temp_new();
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}
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return ctx->sink;
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}
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static void free_context_temps(DisasContext *ctx)
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{
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if (!TCGV_IS_UNUSED_I64(ctx->sink)) {
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tcg_gen_discard_i64(ctx->sink);
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tcg_temp_free(ctx->sink);
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TCGV_UNUSED_I64(ctx->sink);
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}
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if (!TCGV_IS_UNUSED_I64(ctx->zero)) {
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tcg_temp_free(ctx->zero);
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TCGV_UNUSED_I64(ctx->zero);
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}
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if (!TCGV_IS_UNUSED_I64(ctx->lit)) {
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tcg_temp_free(ctx->lit);
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TCGV_UNUSED_I64(ctx->lit);
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}
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}
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static TCGv load_gpr(DisasContext *ctx, unsigned reg)
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{
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if (likely(reg < 31)) {
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return ctx->ir[reg];
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} else {
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return load_zero(ctx);
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}
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}
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static TCGv load_gpr_lit(DisasContext *ctx, unsigned reg,
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uint8_t lit, bool islit)
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{
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if (islit) {
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ctx->lit = tcg_const_i64(lit);
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return ctx->lit;
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} else if (likely(reg < 31)) {
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return ctx->ir[reg];
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} else {
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return load_zero(ctx);
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}
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}
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static TCGv dest_gpr(DisasContext *ctx, unsigned reg)
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{
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if (likely(reg < 31)) {
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return ctx->ir[reg];
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} else {
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return dest_sink(ctx);
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}
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}
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static TCGv load_fpr(DisasContext *ctx, unsigned reg)
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{
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if (likely(reg < 31)) {
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return cpu_fir[reg];
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} else {
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return load_zero(ctx);
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}
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}
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static TCGv dest_fpr(DisasContext *ctx, unsigned reg)
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{
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if (likely(reg < 31)) {
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return cpu_fir[reg];
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} else {
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return dest_sink(ctx);
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}
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}
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static void gen_excp_1(int exception, int error_code)
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{
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TCGv_i32 tmp1, tmp2;
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tmp1 = tcg_const_i32(exception);
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tmp2 = tcg_const_i32(error_code);
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gen_helper_excp(cpu_env, tmp1, tmp2);
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tcg_temp_free_i32(tmp2);
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tcg_temp_free_i32(tmp1);
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}
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static ExitStatus gen_excp(DisasContext *ctx, int exception, int error_code)
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{
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tcg_gen_movi_i64(cpu_pc, ctx->pc);
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gen_excp_1(exception, error_code);
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return EXIT_NORETURN;
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}
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static inline ExitStatus gen_invalid(DisasContext *ctx)
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{
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return gen_excp(ctx, EXCP_OPCDEC, 0);
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}
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static inline void gen_qemu_ldf(TCGv t0, TCGv t1, int flags)
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{
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TCGv_i32 tmp32 = tcg_temp_new_i32();
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tcg_gen_qemu_ld_i32(tmp32, t1, flags, MO_LEUL);
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gen_helper_memory_to_f(t0, tmp32);
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tcg_temp_free_i32(tmp32);
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}
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static inline void gen_qemu_ldg(TCGv t0, TCGv t1, int flags)
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{
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TCGv tmp = tcg_temp_new();
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tcg_gen_qemu_ld_i64(tmp, t1, flags, MO_LEQ);
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gen_helper_memory_to_g(t0, tmp);
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tcg_temp_free(tmp);
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}
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static inline void gen_qemu_lds(TCGv t0, TCGv t1, int flags)
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{
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TCGv_i32 tmp32 = tcg_temp_new_i32();
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tcg_gen_qemu_ld_i32(tmp32, t1, flags, MO_LEUL);
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gen_helper_memory_to_s(t0, tmp32);
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tcg_temp_free_i32(tmp32);
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}
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static inline void gen_qemu_ldl_l(TCGv t0, TCGv t1, int flags)
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{
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tcg_gen_qemu_ld_i64(t0, t1, flags, MO_LESL);
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tcg_gen_mov_i64(cpu_lock_addr, t1);
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tcg_gen_mov_i64(cpu_lock_value, t0);
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}
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static inline void gen_qemu_ldq_l(TCGv t0, TCGv t1, int flags)
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{
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tcg_gen_qemu_ld_i64(t0, t1, flags, MO_LEQ);
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tcg_gen_mov_i64(cpu_lock_addr, t1);
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tcg_gen_mov_i64(cpu_lock_value, t0);
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}
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static inline void gen_load_mem(DisasContext *ctx,
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void (*tcg_gen_qemu_load)(TCGv t0, TCGv t1,
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int flags),
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int ra, int rb, int32_t disp16, bool fp,
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bool clear)
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{
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TCGv tmp, addr, va;
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/* LDQ_U with ra $31 is UNOP. Other various loads are forms of
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prefetches, which we can treat as nops. No worries about
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missed exceptions here. */
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if (unlikely(ra == 31)) {
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return;
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}
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tmp = tcg_temp_new();
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addr = load_gpr(ctx, rb);
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if (disp16) {
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tcg_gen_addi_i64(tmp, addr, disp16);
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addr = tmp;
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}
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if (clear) {
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tcg_gen_andi_i64(tmp, addr, ~0x7);
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addr = tmp;
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}
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va = (fp ? cpu_fir[ra] : ctx->ir[ra]);
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tcg_gen_qemu_load(va, addr, ctx->mem_idx);
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tcg_temp_free(tmp);
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}
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static inline void gen_qemu_stf(TCGv t0, TCGv t1, int flags)
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{
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TCGv_i32 tmp32 = tcg_temp_new_i32();
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gen_helper_f_to_memory(tmp32, t0);
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tcg_gen_qemu_st_i32(tmp32, t1, flags, MO_LEUL);
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tcg_temp_free_i32(tmp32);
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}
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static inline void gen_qemu_stg(TCGv t0, TCGv t1, int flags)
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{
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TCGv tmp = tcg_temp_new();
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gen_helper_g_to_memory(tmp, t0);
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tcg_gen_qemu_st_i64(tmp, t1, flags, MO_LEQ);
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tcg_temp_free(tmp);
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}
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static inline void gen_qemu_sts(TCGv t0, TCGv t1, int flags)
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{
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TCGv_i32 tmp32 = tcg_temp_new_i32();
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gen_helper_s_to_memory(tmp32, t0);
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tcg_gen_qemu_st_i32(tmp32, t1, flags, MO_LEUL);
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tcg_temp_free_i32(tmp32);
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}
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static inline void gen_store_mem(DisasContext *ctx,
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void (*tcg_gen_qemu_store)(TCGv t0, TCGv t1,
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int flags),
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int ra, int rb, int32_t disp16, bool fp,
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bool clear)
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{
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TCGv tmp, addr, va;
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tmp = tcg_temp_new();
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addr = load_gpr(ctx, rb);
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if (disp16) {
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tcg_gen_addi_i64(tmp, addr, disp16);
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addr = tmp;
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}
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if (clear) {
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tcg_gen_andi_i64(tmp, addr, ~0x7);
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addr = tmp;
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}
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va = (fp ? load_fpr(ctx, ra) : load_gpr(ctx, ra));
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tcg_gen_qemu_store(va, addr, ctx->mem_idx);
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tcg_temp_free(tmp);
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}
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static ExitStatus gen_store_conditional(DisasContext *ctx, int ra, int rb,
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int32_t disp16, int mem_idx,
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TCGMemOp op)
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{
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TCGLabel *lab_fail, *lab_done;
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TCGv addr, val;
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addr = tcg_temp_new_i64();
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tcg_gen_addi_i64(addr, load_gpr(ctx, rb), disp16);
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free_context_temps(ctx);
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lab_fail = gen_new_label();
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lab_done = gen_new_label();
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tcg_gen_brcond_i64(TCG_COND_NE, addr, cpu_lock_addr, lab_fail);
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tcg_temp_free_i64(addr);
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val = tcg_temp_new_i64();
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tcg_gen_atomic_cmpxchg_i64(val, cpu_lock_addr, cpu_lock_value,
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load_gpr(ctx, ra), mem_idx, op);
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free_context_temps(ctx);
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if (ra != 31) {
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tcg_gen_setcond_i64(TCG_COND_EQ, ctx->ir[ra], val, cpu_lock_value);
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}
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tcg_temp_free_i64(val);
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tcg_gen_br(lab_done);
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gen_set_label(lab_fail);
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if (ra != 31) {
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tcg_gen_movi_i64(ctx->ir[ra], 0);
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}
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gen_set_label(lab_done);
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tcg_gen_movi_i64(cpu_lock_addr, -1);
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return NO_EXIT;
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}
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static bool in_superpage(DisasContext *ctx, int64_t addr)
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{
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#ifndef CONFIG_USER_ONLY
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return ((ctx->tb->flags & TB_FLAGS_USER_MODE) == 0
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&& addr >> TARGET_VIRT_ADDR_SPACE_BITS == -1
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&& ((addr >> 41) & 3) == 2);
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#else
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return false;
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#endif
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}
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static bool use_goto_tb(DisasContext *ctx, uint64_t dest)
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{
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/* Suppress goto_tb in the case of single-steping and IO. */
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if ((ctx->tb->cflags & CF_LAST_IO)
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|| ctx->singlestep_enabled || singlestep) {
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return false;
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}
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#ifndef CONFIG_USER_ONLY
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/* If the destination is in the superpage, the page perms can't change. */
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if (in_superpage(ctx, dest)) {
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return true;
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}
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/* Check for the dest on the same page as the start of the TB. */
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return ((ctx->tb->pc ^ dest) & TARGET_PAGE_MASK) == 0;
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#else
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return true;
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#endif
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}
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static ExitStatus gen_bdirect(DisasContext *ctx, int ra, int32_t disp)
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{
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uint64_t dest = ctx->pc + (disp << 2);
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if (ra != 31) {
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tcg_gen_movi_i64(ctx->ir[ra], ctx->pc);
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}
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/* Notice branch-to-next; used to initialize RA with the PC. */
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if (disp == 0) {
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return 0;
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} else if (use_goto_tb(ctx, dest)) {
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tcg_gen_goto_tb(0);
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tcg_gen_movi_i64(cpu_pc, dest);
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tcg_gen_exit_tb((uintptr_t)ctx->tb);
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return EXIT_GOTO_TB;
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} else {
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tcg_gen_movi_i64(cpu_pc, dest);
|
|
return EXIT_PC_UPDATED;
|
|
}
|
|
}
|
|
|
|
static ExitStatus gen_bcond_internal(DisasContext *ctx, TCGCond cond,
|
|
TCGv cmp, int32_t disp)
|
|
{
|
|
uint64_t dest = ctx->pc + (disp << 2);
|
|
TCGLabel *lab_true = gen_new_label();
|
|
|
|
if (use_goto_tb(ctx, dest)) {
|
|
tcg_gen_brcondi_i64(cond, cmp, 0, lab_true);
|
|
|
|
tcg_gen_goto_tb(0);
|
|
tcg_gen_movi_i64(cpu_pc, ctx->pc);
|
|
tcg_gen_exit_tb((uintptr_t)ctx->tb);
|
|
|
|
gen_set_label(lab_true);
|
|
tcg_gen_goto_tb(1);
|
|
tcg_gen_movi_i64(cpu_pc, dest);
|
|
tcg_gen_exit_tb((uintptr_t)ctx->tb + 1);
|
|
|
|
return EXIT_GOTO_TB;
|
|
} else {
|
|
TCGv_i64 z = tcg_const_i64(0);
|
|
TCGv_i64 d = tcg_const_i64(dest);
|
|
TCGv_i64 p = tcg_const_i64(ctx->pc);
|
|
|
|
tcg_gen_movcond_i64(cond, cpu_pc, cmp, z, d, p);
|
|
|
|
tcg_temp_free_i64(z);
|
|
tcg_temp_free_i64(d);
|
|
tcg_temp_free_i64(p);
|
|
return EXIT_PC_UPDATED;
|
|
}
|
|
}
|
|
|
|
static ExitStatus gen_bcond(DisasContext *ctx, TCGCond cond, int ra,
|
|
int32_t disp, int mask)
|
|
{
|
|
TCGv cmp_tmp;
|
|
|
|
if (mask) {
|
|
cmp_tmp = tcg_temp_new();
|
|
tcg_gen_andi_i64(cmp_tmp, load_gpr(ctx, ra), 1);
|
|
} else {
|
|
cmp_tmp = load_gpr(ctx, ra);
|
|
}
|
|
|
|
return gen_bcond_internal(ctx, cond, cmp_tmp, disp);
|
|
}
|
|
|
|
/* Fold -0.0 for comparison with COND. */
|
|
|
|
static void gen_fold_mzero(TCGCond cond, TCGv dest, TCGv src)
|
|
{
|
|
uint64_t mzero = 1ull << 63;
|
|
|
|
switch (cond) {
|
|
case TCG_COND_LE:
|
|
case TCG_COND_GT:
|
|
/* For <= or >, the -0.0 value directly compares the way we want. */
|
|
tcg_gen_mov_i64(dest, src);
|
|
break;
|
|
|
|
case TCG_COND_EQ:
|
|
case TCG_COND_NE:
|
|
/* For == or !=, we can simply mask off the sign bit and compare. */
|
|
tcg_gen_andi_i64(dest, src, mzero - 1);
|
|
break;
|
|
|
|
case TCG_COND_GE:
|
|
case TCG_COND_LT:
|
|
/* For >= or <, map -0.0 to +0.0 via comparison and mask. */
|
|
tcg_gen_setcondi_i64(TCG_COND_NE, dest, src, mzero);
|
|
tcg_gen_neg_i64(dest, dest);
|
|
tcg_gen_and_i64(dest, dest, src);
|
|
break;
|
|
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
static ExitStatus gen_fbcond(DisasContext *ctx, TCGCond cond, int ra,
|
|
int32_t disp)
|
|
{
|
|
TCGv cmp_tmp = tcg_temp_new();
|
|
gen_fold_mzero(cond, cmp_tmp, load_fpr(ctx, ra));
|
|
return gen_bcond_internal(ctx, cond, cmp_tmp, disp);
|
|
}
|
|
|
|
static void gen_fcmov(DisasContext *ctx, TCGCond cond, int ra, int rb, int rc)
|
|
{
|
|
TCGv_i64 va, vb, z;
|
|
|
|
z = load_zero(ctx);
|
|
vb = load_fpr(ctx, rb);
|
|
va = tcg_temp_new();
|
|
gen_fold_mzero(cond, va, load_fpr(ctx, ra));
|
|
|
|
tcg_gen_movcond_i64(cond, dest_fpr(ctx, rc), va, z, vb, load_fpr(ctx, rc));
|
|
|
|
tcg_temp_free(va);
|
|
}
|
|
|
|
#define QUAL_RM_N 0x080 /* Round mode nearest even */
|
|
#define QUAL_RM_C 0x000 /* Round mode chopped */
|
|
#define QUAL_RM_M 0x040 /* Round mode minus infinity */
|
|
#define QUAL_RM_D 0x0c0 /* Round mode dynamic */
|
|
#define QUAL_RM_MASK 0x0c0
|
|
|
|
#define QUAL_U 0x100 /* Underflow enable (fp output) */
|
|
#define QUAL_V 0x100 /* Overflow enable (int output) */
|
|
#define QUAL_S 0x400 /* Software completion enable */
|
|
#define QUAL_I 0x200 /* Inexact detection enable */
|
|
|
|
static void gen_qual_roundmode(DisasContext *ctx, int fn11)
|
|
{
|
|
TCGv_i32 tmp;
|
|
|
|
fn11 &= QUAL_RM_MASK;
|
|
if (fn11 == ctx->tb_rm) {
|
|
return;
|
|
}
|
|
ctx->tb_rm = fn11;
|
|
|
|
tmp = tcg_temp_new_i32();
|
|
switch (fn11) {
|
|
case QUAL_RM_N:
|
|
tcg_gen_movi_i32(tmp, float_round_nearest_even);
|
|
break;
|
|
case QUAL_RM_C:
|
|
tcg_gen_movi_i32(tmp, float_round_to_zero);
|
|
break;
|
|
case QUAL_RM_M:
|
|
tcg_gen_movi_i32(tmp, float_round_down);
|
|
break;
|
|
case QUAL_RM_D:
|
|
tcg_gen_ld8u_i32(tmp, cpu_env,
|
|
offsetof(CPUAlphaState, fpcr_dyn_round));
|
|
break;
|
|
}
|
|
|
|
#if defined(CONFIG_SOFTFLOAT_INLINE)
|
|
/* ??? The "fpu/softfloat.h" interface is to call set_float_rounding_mode.
|
|
With CONFIG_SOFTFLOAT that expands to an out-of-line call that just
|
|
sets the one field. */
|
|
tcg_gen_st8_i32(tmp, cpu_env,
|
|
offsetof(CPUAlphaState, fp_status.float_rounding_mode));
|
|
#else
|
|
gen_helper_setroundmode(tmp);
|
|
#endif
|
|
|
|
tcg_temp_free_i32(tmp);
|
|
}
|
|
|
|
static void gen_qual_flushzero(DisasContext *ctx, int fn11)
|
|
{
|
|
TCGv_i32 tmp;
|
|
|
|
fn11 &= QUAL_U;
|
|
if (fn11 == ctx->tb_ftz) {
|
|
return;
|
|
}
|
|
ctx->tb_ftz = fn11;
|
|
|
|
tmp = tcg_temp_new_i32();
|
|
if (fn11) {
|
|
/* Underflow is enabled, use the FPCR setting. */
|
|
tcg_gen_ld8u_i32(tmp, cpu_env,
|
|
offsetof(CPUAlphaState, fpcr_flush_to_zero));
|
|
} else {
|
|
/* Underflow is disabled, force flush-to-zero. */
|
|
tcg_gen_movi_i32(tmp, 1);
|
|
}
|
|
|
|
#if defined(CONFIG_SOFTFLOAT_INLINE)
|
|
tcg_gen_st8_i32(tmp, cpu_env,
|
|
offsetof(CPUAlphaState, fp_status.flush_to_zero));
|
|
#else
|
|
gen_helper_setflushzero(tmp);
|
|
#endif
|
|
|
|
tcg_temp_free_i32(tmp);
|
|
}
|
|
|
|
static TCGv gen_ieee_input(DisasContext *ctx, int reg, int fn11, int is_cmp)
|
|
{
|
|
TCGv val;
|
|
|
|
if (unlikely(reg == 31)) {
|
|
val = load_zero(ctx);
|
|
} else {
|
|
val = cpu_fir[reg];
|
|
if ((fn11 & QUAL_S) == 0) {
|
|
if (is_cmp) {
|
|
gen_helper_ieee_input_cmp(cpu_env, val);
|
|
} else {
|
|
gen_helper_ieee_input(cpu_env, val);
|
|
}
|
|
} else {
|
|
#ifndef CONFIG_USER_ONLY
|
|
/* In system mode, raise exceptions for denormals like real
|
|
hardware. In user mode, proceed as if the OS completion
|
|
handler is handling the denormal as per spec. */
|
|
gen_helper_ieee_input_s(cpu_env, val);
|
|
#endif
|
|
}
|
|
}
|
|
return val;
|
|
}
|
|
|
|
static void gen_fp_exc_raise(int rc, int fn11)
|
|
{
|
|
/* ??? We ought to be able to do something with imprecise exceptions.
|
|
E.g. notice we're still in the trap shadow of something within the
|
|
TB and do not generate the code to signal the exception; end the TB
|
|
when an exception is forced to arrive, either by consumption of a
|
|
register value or TRAPB or EXCB. */
|
|
TCGv_i32 reg, ign;
|
|
uint32_t ignore = 0;
|
|
|
|
if (!(fn11 & QUAL_U)) {
|
|
/* Note that QUAL_U == QUAL_V, so ignore either. */
|
|
ignore |= FPCR_UNF | FPCR_IOV;
|
|
}
|
|
if (!(fn11 & QUAL_I)) {
|
|
ignore |= FPCR_INE;
|
|
}
|
|
ign = tcg_const_i32(ignore);
|
|
|
|
/* ??? Pass in the regno of the destination so that the helper can
|
|
set EXC_MASK, which contains a bitmask of destination registers
|
|
that have caused arithmetic traps. A simple userspace emulation
|
|
does not require this. We do need it for a guest kernel's entArith,
|
|
or if we were to do something clever with imprecise exceptions. */
|
|
reg = tcg_const_i32(rc + 32);
|
|
if (fn11 & QUAL_S) {
|
|
gen_helper_fp_exc_raise_s(cpu_env, ign, reg);
|
|
} else {
|
|
gen_helper_fp_exc_raise(cpu_env, ign, reg);
|
|
}
|
|
|
|
tcg_temp_free_i32(reg);
|
|
tcg_temp_free_i32(ign);
|
|
}
|
|
|
|
static void gen_cvtlq(TCGv vc, TCGv vb)
|
|
{
|
|
TCGv tmp = tcg_temp_new();
|
|
|
|
/* The arithmetic right shift here, plus the sign-extended mask below
|
|
yields a sign-extended result without an explicit ext32s_i64. */
|
|
tcg_gen_sari_i64(tmp, vb, 32);
|
|
tcg_gen_shri_i64(vc, vb, 29);
|
|
tcg_gen_andi_i64(tmp, tmp, (int32_t)0xc0000000);
|
|
tcg_gen_andi_i64(vc, vc, 0x3fffffff);
|
|
tcg_gen_or_i64(vc, vc, tmp);
|
|
|
|
tcg_temp_free(tmp);
|
|
}
|
|
|
|
static void gen_ieee_arith2(DisasContext *ctx,
|
|
void (*helper)(TCGv, TCGv_ptr, TCGv),
|
|
int rb, int rc, int fn11)
|
|
{
|
|
TCGv vb;
|
|
|
|
gen_qual_roundmode(ctx, fn11);
|
|
gen_qual_flushzero(ctx, fn11);
|
|
|
|
vb = gen_ieee_input(ctx, rb, fn11, 0);
|
|
helper(dest_fpr(ctx, rc), cpu_env, vb);
|
|
|
|
gen_fp_exc_raise(rc, fn11);
|
|
}
|
|
|
|
#define IEEE_ARITH2(name) \
|
|
static inline void glue(gen_, name)(DisasContext *ctx, \
|
|
int rb, int rc, int fn11) \
|
|
{ \
|
|
gen_ieee_arith2(ctx, gen_helper_##name, rb, rc, fn11); \
|
|
}
|
|
IEEE_ARITH2(sqrts)
|
|
IEEE_ARITH2(sqrtt)
|
|
IEEE_ARITH2(cvtst)
|
|
IEEE_ARITH2(cvtts)
|
|
|
|
static void gen_cvttq(DisasContext *ctx, int rb, int rc, int fn11)
|
|
{
|
|
TCGv vb, vc;
|
|
|
|
/* No need to set flushzero, since we have an integer output. */
|
|
vb = gen_ieee_input(ctx, rb, fn11, 0);
|
|
vc = dest_fpr(ctx, rc);
|
|
|
|
/* Almost all integer conversions use cropped rounding;
|
|
special case that. */
|
|
if ((fn11 & QUAL_RM_MASK) == QUAL_RM_C) {
|
|
gen_helper_cvttq_c(vc, cpu_env, vb);
|
|
} else {
|
|
gen_qual_roundmode(ctx, fn11);
|
|
gen_helper_cvttq(vc, cpu_env, vb);
|
|
}
|
|
gen_fp_exc_raise(rc, fn11);
|
|
}
|
|
|
|
static void gen_ieee_intcvt(DisasContext *ctx,
|
|
void (*helper)(TCGv, TCGv_ptr, TCGv),
|
|
int rb, int rc, int fn11)
|
|
{
|
|
TCGv vb, vc;
|
|
|
|
gen_qual_roundmode(ctx, fn11);
|
|
vb = load_fpr(ctx, rb);
|
|
vc = dest_fpr(ctx, rc);
|
|
|
|
/* The only exception that can be raised by integer conversion
|
|
is inexact. Thus we only need to worry about exceptions when
|
|
inexact handling is requested. */
|
|
if (fn11 & QUAL_I) {
|
|
helper(vc, cpu_env, vb);
|
|
gen_fp_exc_raise(rc, fn11);
|
|
} else {
|
|
helper(vc, cpu_env, vb);
|
|
}
|
|
}
|
|
|
|
#define IEEE_INTCVT(name) \
|
|
static inline void glue(gen_, name)(DisasContext *ctx, \
|
|
int rb, int rc, int fn11) \
|
|
{ \
|
|
gen_ieee_intcvt(ctx, gen_helper_##name, rb, rc, fn11); \
|
|
}
|
|
IEEE_INTCVT(cvtqs)
|
|
IEEE_INTCVT(cvtqt)
|
|
|
|
static void gen_cpy_mask(TCGv vc, TCGv va, TCGv vb, bool inv_a, uint64_t mask)
|
|
{
|
|
TCGv vmask = tcg_const_i64(mask);
|
|
TCGv tmp = tcg_temp_new_i64();
|
|
|
|
if (inv_a) {
|
|
tcg_gen_andc_i64(tmp, vmask, va);
|
|
} else {
|
|
tcg_gen_and_i64(tmp, va, vmask);
|
|
}
|
|
|
|
tcg_gen_andc_i64(vc, vb, vmask);
|
|
tcg_gen_or_i64(vc, vc, tmp);
|
|
|
|
tcg_temp_free(vmask);
|
|
tcg_temp_free(tmp);
|
|
}
|
|
|
|
static void gen_ieee_arith3(DisasContext *ctx,
|
|
void (*helper)(TCGv, TCGv_ptr, TCGv, TCGv),
|
|
int ra, int rb, int rc, int fn11)
|
|
{
|
|
TCGv va, vb, vc;
|
|
|
|
gen_qual_roundmode(ctx, fn11);
|
|
gen_qual_flushzero(ctx, fn11);
|
|
|
|
va = gen_ieee_input(ctx, ra, fn11, 0);
|
|
vb = gen_ieee_input(ctx, rb, fn11, 0);
|
|
vc = dest_fpr(ctx, rc);
|
|
helper(vc, cpu_env, va, vb);
|
|
|
|
gen_fp_exc_raise(rc, fn11);
|
|
}
|
|
|
|
#define IEEE_ARITH3(name) \
|
|
static inline void glue(gen_, name)(DisasContext *ctx, \
|
|
int ra, int rb, int rc, int fn11) \
|
|
{ \
|
|
gen_ieee_arith3(ctx, gen_helper_##name, ra, rb, rc, fn11); \
|
|
}
|
|
IEEE_ARITH3(adds)
|
|
IEEE_ARITH3(subs)
|
|
IEEE_ARITH3(muls)
|
|
IEEE_ARITH3(divs)
|
|
IEEE_ARITH3(addt)
|
|
IEEE_ARITH3(subt)
|
|
IEEE_ARITH3(mult)
|
|
IEEE_ARITH3(divt)
|
|
|
|
static void gen_ieee_compare(DisasContext *ctx,
|
|
void (*helper)(TCGv, TCGv_ptr, TCGv, TCGv),
|
|
int ra, int rb, int rc, int fn11)
|
|
{
|
|
TCGv va, vb, vc;
|
|
|
|
va = gen_ieee_input(ctx, ra, fn11, 1);
|
|
vb = gen_ieee_input(ctx, rb, fn11, 1);
|
|
vc = dest_fpr(ctx, rc);
|
|
helper(vc, cpu_env, va, vb);
|
|
|
|
gen_fp_exc_raise(rc, fn11);
|
|
}
|
|
|
|
#define IEEE_CMP3(name) \
|
|
static inline void glue(gen_, name)(DisasContext *ctx, \
|
|
int ra, int rb, int rc, int fn11) \
|
|
{ \
|
|
gen_ieee_compare(ctx, gen_helper_##name, ra, rb, rc, fn11); \
|
|
}
|
|
IEEE_CMP3(cmptun)
|
|
IEEE_CMP3(cmpteq)
|
|
IEEE_CMP3(cmptlt)
|
|
IEEE_CMP3(cmptle)
|
|
|
|
static inline uint64_t zapnot_mask(uint8_t lit)
|
|
{
|
|
uint64_t mask = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < 8; ++i) {
|
|
if ((lit >> i) & 1) {
|
|
mask |= 0xffull << (i * 8);
|
|
}
|
|
}
|
|
return mask;
|
|
}
|
|
|
|
/* Implement zapnot with an immediate operand, which expands to some
|
|
form of immediate AND. This is a basic building block in the
|
|
definition of many of the other byte manipulation instructions. */
|
|
static void gen_zapnoti(TCGv dest, TCGv src, uint8_t lit)
|
|
{
|
|
switch (lit) {
|
|
case 0x00:
|
|
tcg_gen_movi_i64(dest, 0);
|
|
break;
|
|
case 0x01:
|
|
tcg_gen_ext8u_i64(dest, src);
|
|
break;
|
|
case 0x03:
|
|
tcg_gen_ext16u_i64(dest, src);
|
|
break;
|
|
case 0x0f:
|
|
tcg_gen_ext32u_i64(dest, src);
|
|
break;
|
|
case 0xff:
|
|
tcg_gen_mov_i64(dest, src);
|
|
break;
|
|
default:
|
|
tcg_gen_andi_i64(dest, src, zapnot_mask(lit));
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* EXTWH, EXTLH, EXTQH */
|
|
static void gen_ext_h(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit,
|
|
uint8_t lit, uint8_t byte_mask)
|
|
{
|
|
if (islit) {
|
|
int pos = (64 - lit * 8) & 0x3f;
|
|
int len = cto32(byte_mask) * 8;
|
|
if (pos < len) {
|
|
tcg_gen_deposit_z_i64(vc, va, pos, len - pos);
|
|
} else {
|
|
tcg_gen_movi_i64(vc, 0);
|
|
}
|
|
} else {
|
|
TCGv tmp = tcg_temp_new();
|
|
tcg_gen_shli_i64(tmp, load_gpr(ctx, rb), 3);
|
|
tcg_gen_neg_i64(tmp, tmp);
|
|
tcg_gen_andi_i64(tmp, tmp, 0x3f);
|
|
tcg_gen_shl_i64(vc, va, tmp);
|
|
tcg_temp_free(tmp);
|
|
}
|
|
gen_zapnoti(vc, vc, byte_mask);
|
|
}
|
|
|
|
/* EXTBL, EXTWL, EXTLL, EXTQL */
|
|
static void gen_ext_l(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit,
|
|
uint8_t lit, uint8_t byte_mask)
|
|
{
|
|
if (islit) {
|
|
int pos = (lit & 7) * 8;
|
|
int len = cto32(byte_mask) * 8;
|
|
if (pos + len >= 64) {
|
|
len = 64 - pos;
|
|
}
|
|
tcg_gen_extract_i64(vc, va, pos, len);
|
|
} else {
|
|
TCGv tmp = tcg_temp_new();
|
|
tcg_gen_andi_i64(tmp, load_gpr(ctx, rb), 7);
|
|
tcg_gen_shli_i64(tmp, tmp, 3);
|
|
tcg_gen_shr_i64(vc, va, tmp);
|
|
tcg_temp_free(tmp);
|
|
gen_zapnoti(vc, vc, byte_mask);
|
|
}
|
|
}
|
|
|
|
/* INSWH, INSLH, INSQH */
|
|
static void gen_ins_h(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit,
|
|
uint8_t lit, uint8_t byte_mask)
|
|
{
|
|
if (islit) {
|
|
int pos = 64 - (lit & 7) * 8;
|
|
int len = cto32(byte_mask) * 8;
|
|
if (pos < len) {
|
|
tcg_gen_extract_i64(vc, va, pos, len - pos);
|
|
} else {
|
|
tcg_gen_movi_i64(vc, 0);
|
|
}
|
|
} else {
|
|
TCGv tmp = tcg_temp_new();
|
|
TCGv shift = tcg_temp_new();
|
|
|
|
/* The instruction description has us left-shift the byte mask
|
|
and extract bits <15:8> and apply that zap at the end. This
|
|
is equivalent to simply performing the zap first and shifting
|
|
afterward. */
|
|
gen_zapnoti(tmp, va, byte_mask);
|
|
|
|
/* If (B & 7) == 0, we need to shift by 64 and leave a zero. Do this
|
|
portably by splitting the shift into two parts: shift_count-1 and 1.
|
|
Arrange for the -1 by using ones-complement instead of
|
|
twos-complement in the negation: ~(B * 8) & 63. */
|
|
|
|
tcg_gen_shli_i64(shift, load_gpr(ctx, rb), 3);
|
|
tcg_gen_not_i64(shift, shift);
|
|
tcg_gen_andi_i64(shift, shift, 0x3f);
|
|
|
|
tcg_gen_shr_i64(vc, tmp, shift);
|
|
tcg_gen_shri_i64(vc, vc, 1);
|
|
tcg_temp_free(shift);
|
|
tcg_temp_free(tmp);
|
|
}
|
|
}
|
|
|
|
/* INSBL, INSWL, INSLL, INSQL */
|
|
static void gen_ins_l(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit,
|
|
uint8_t lit, uint8_t byte_mask)
|
|
{
|
|
if (islit) {
|
|
int pos = (lit & 7) * 8;
|
|
int len = cto32(byte_mask) * 8;
|
|
if (pos + len > 64) {
|
|
len = 64 - pos;
|
|
}
|
|
tcg_gen_deposit_z_i64(vc, va, pos, len);
|
|
} else {
|
|
TCGv tmp = tcg_temp_new();
|
|
TCGv shift = tcg_temp_new();
|
|
|
|
/* The instruction description has us left-shift the byte mask
|
|
and extract bits <15:8> and apply that zap at the end. This
|
|
is equivalent to simply performing the zap first and shifting
|
|
afterward. */
|
|
gen_zapnoti(tmp, va, byte_mask);
|
|
|
|
tcg_gen_andi_i64(shift, load_gpr(ctx, rb), 7);
|
|
tcg_gen_shli_i64(shift, shift, 3);
|
|
tcg_gen_shl_i64(vc, tmp, shift);
|
|
tcg_temp_free(shift);
|
|
tcg_temp_free(tmp);
|
|
}
|
|
}
|
|
|
|
/* MSKWH, MSKLH, MSKQH */
|
|
static void gen_msk_h(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit,
|
|
uint8_t lit, uint8_t byte_mask)
|
|
{
|
|
if (islit) {
|
|
gen_zapnoti(vc, va, ~((byte_mask << (lit & 7)) >> 8));
|
|
} else {
|
|
TCGv shift = tcg_temp_new();
|
|
TCGv mask = tcg_temp_new();
|
|
|
|
/* The instruction description is as above, where the byte_mask
|
|
is shifted left, and then we extract bits <15:8>. This can be
|
|
emulated with a right-shift on the expanded byte mask. This
|
|
requires extra care because for an input <2:0> == 0 we need a
|
|
shift of 64 bits in order to generate a zero. This is done by
|
|
splitting the shift into two parts, the variable shift - 1
|
|
followed by a constant 1 shift. The code we expand below is
|
|
equivalent to ~(B * 8) & 63. */
|
|
|
|
tcg_gen_shli_i64(shift, load_gpr(ctx, rb), 3);
|
|
tcg_gen_not_i64(shift, shift);
|
|
tcg_gen_andi_i64(shift, shift, 0x3f);
|
|
tcg_gen_movi_i64(mask, zapnot_mask (byte_mask));
|
|
tcg_gen_shr_i64(mask, mask, shift);
|
|
tcg_gen_shri_i64(mask, mask, 1);
|
|
|
|
tcg_gen_andc_i64(vc, va, mask);
|
|
|
|
tcg_temp_free(mask);
|
|
tcg_temp_free(shift);
|
|
}
|
|
}
|
|
|
|
/* MSKBL, MSKWL, MSKLL, MSKQL */
|
|
static void gen_msk_l(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit,
|
|
uint8_t lit, uint8_t byte_mask)
|
|
{
|
|
if (islit) {
|
|
gen_zapnoti(vc, va, ~(byte_mask << (lit & 7)));
|
|
} else {
|
|
TCGv shift = tcg_temp_new();
|
|
TCGv mask = tcg_temp_new();
|
|
|
|
tcg_gen_andi_i64(shift, load_gpr(ctx, rb), 7);
|
|
tcg_gen_shli_i64(shift, shift, 3);
|
|
tcg_gen_movi_i64(mask, zapnot_mask(byte_mask));
|
|
tcg_gen_shl_i64(mask, mask, shift);
|
|
|
|
tcg_gen_andc_i64(vc, va, mask);
|
|
|
|
tcg_temp_free(mask);
|
|
tcg_temp_free(shift);
|
|
}
|
|
}
|
|
|
|
static void gen_rx(DisasContext *ctx, int ra, int set)
|
|
{
|
|
TCGv_i32 tmp;
|
|
|
|
if (ra != 31) {
|
|
tcg_gen_ld8u_i64(ctx->ir[ra], cpu_env,
|
|
offsetof(CPUAlphaState, intr_flag));
|
|
}
|
|
|
|
tmp = tcg_const_i32(set);
|
|
tcg_gen_st8_i32(tmp, cpu_env, offsetof(CPUAlphaState, intr_flag));
|
|
tcg_temp_free_i32(tmp);
|
|
}
|
|
|
|
static ExitStatus gen_call_pal(DisasContext *ctx, int palcode)
|
|
{
|
|
/* We're emulating OSF/1 PALcode. Many of these are trivial access
|
|
to internal cpu registers. */
|
|
|
|
/* Unprivileged PAL call */
|
|
if (palcode >= 0x80 && palcode < 0xC0) {
|
|
switch (palcode) {
|
|
case 0x86:
|
|
/* IMB */
|
|
/* No-op inside QEMU. */
|
|
break;
|
|
case 0x9E:
|
|
/* RDUNIQUE */
|
|
tcg_gen_ld_i64(ctx->ir[IR_V0], cpu_env,
|
|
offsetof(CPUAlphaState, unique));
|
|
break;
|
|
case 0x9F:
|
|
/* WRUNIQUE */
|
|
tcg_gen_st_i64(ctx->ir[IR_A0], cpu_env,
|
|
offsetof(CPUAlphaState, unique));
|
|
break;
|
|
default:
|
|
palcode &= 0xbf;
|
|
goto do_call_pal;
|
|
}
|
|
return NO_EXIT;
|
|
}
|
|
|
|
#ifndef CONFIG_USER_ONLY
|
|
/* Privileged PAL code */
|
|
if (palcode < 0x40 && (ctx->tb->flags & TB_FLAGS_USER_MODE) == 0) {
|
|
switch (palcode) {
|
|
case 0x01:
|
|
/* CFLUSH */
|
|
/* No-op inside QEMU. */
|
|
break;
|
|
case 0x02:
|
|
/* DRAINA */
|
|
/* No-op inside QEMU. */
|
|
break;
|
|
case 0x2D:
|
|
/* WRVPTPTR */
|
|
tcg_gen_st_i64(ctx->ir[IR_A0], cpu_env,
|
|
offsetof(CPUAlphaState, vptptr));
|
|
break;
|
|
case 0x31:
|
|
/* WRVAL */
|
|
tcg_gen_st_i64(ctx->ir[IR_A0], cpu_env,
|
|
offsetof(CPUAlphaState, sysval));
|
|
break;
|
|
case 0x32:
|
|
/* RDVAL */
|
|
tcg_gen_ld_i64(ctx->ir[IR_V0], cpu_env,
|
|
offsetof(CPUAlphaState, sysval));
|
|
break;
|
|
|
|
case 0x35: {
|
|
/* SWPIPL */
|
|
TCGv tmp;
|
|
|
|
/* Note that we already know we're in kernel mode, so we know
|
|
that PS only contains the 3 IPL bits. */
|
|
tcg_gen_ld8u_i64(ctx->ir[IR_V0], cpu_env,
|
|
offsetof(CPUAlphaState, ps));
|
|
|
|
/* But make sure and store only the 3 IPL bits from the user. */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_andi_i64(tmp, ctx->ir[IR_A0], PS_INT_MASK);
|
|
tcg_gen_st8_i64(tmp, cpu_env, offsetof(CPUAlphaState, ps));
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
}
|
|
|
|
case 0x36:
|
|
/* RDPS */
|
|
tcg_gen_ld8u_i64(ctx->ir[IR_V0], cpu_env,
|
|
offsetof(CPUAlphaState, ps));
|
|
break;
|
|
case 0x38:
|
|
/* WRUSP */
|
|
tcg_gen_st_i64(ctx->ir[IR_A0], cpu_env,
|
|
offsetof(CPUAlphaState, usp));
|
|
break;
|
|
case 0x3A:
|
|
/* RDUSP */
|
|
tcg_gen_ld_i64(ctx->ir[IR_V0], cpu_env,
|
|
offsetof(CPUAlphaState, usp));
|
|
break;
|
|
case 0x3C:
|
|
/* WHAMI */
|
|
tcg_gen_ld32s_i64(ctx->ir[IR_V0], cpu_env,
|
|
-offsetof(AlphaCPU, env) + offsetof(CPUState, cpu_index));
|
|
break;
|
|
|
|
default:
|
|
palcode &= 0x3f;
|
|
goto do_call_pal;
|
|
}
|
|
return NO_EXIT;
|
|
}
|
|
#endif
|
|
return gen_invalid(ctx);
|
|
|
|
do_call_pal:
|
|
#ifdef CONFIG_USER_ONLY
|
|
return gen_excp(ctx, EXCP_CALL_PAL, palcode);
|
|
#else
|
|
{
|
|
TCGv tmp = tcg_temp_new();
|
|
uint64_t exc_addr = ctx->pc;
|
|
uint64_t entry = ctx->palbr;
|
|
|
|
if (ctx->tb->flags & TB_FLAGS_PAL_MODE) {
|
|
exc_addr |= 1;
|
|
} else {
|
|
tcg_gen_movi_i64(tmp, 1);
|
|
tcg_gen_st8_i64(tmp, cpu_env, offsetof(CPUAlphaState, pal_mode));
|
|
}
|
|
|
|
tcg_gen_movi_i64(tmp, exc_addr);
|
|
tcg_gen_st_i64(tmp, cpu_env, offsetof(CPUAlphaState, exc_addr));
|
|
tcg_temp_free(tmp);
|
|
|
|
entry += (palcode & 0x80
|
|
? 0x2000 + (palcode - 0x80) * 64
|
|
: 0x1000 + palcode * 64);
|
|
|
|
/* Since the destination is running in PALmode, we don't really
|
|
need the page permissions check. We'll see the existence of
|
|
the page when we create the TB, and we'll flush all TBs if
|
|
we change the PAL base register. */
|
|
if (!ctx->singlestep_enabled && !(ctx->tb->cflags & CF_LAST_IO)) {
|
|
tcg_gen_goto_tb(0);
|
|
tcg_gen_movi_i64(cpu_pc, entry);
|
|
tcg_gen_exit_tb((uintptr_t)ctx->tb);
|
|
return EXIT_GOTO_TB;
|
|
} else {
|
|
tcg_gen_movi_i64(cpu_pc, entry);
|
|
return EXIT_PC_UPDATED;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#ifndef CONFIG_USER_ONLY
|
|
|
|
#define PR_BYTE 0x100000
|
|
#define PR_LONG 0x200000
|
|
|
|
static int cpu_pr_data(int pr)
|
|
{
|
|
switch (pr) {
|
|
case 0: return offsetof(CPUAlphaState, ps) | PR_BYTE;
|
|
case 1: return offsetof(CPUAlphaState, fen) | PR_BYTE;
|
|
case 2: return offsetof(CPUAlphaState, pcc_ofs) | PR_LONG;
|
|
case 3: return offsetof(CPUAlphaState, trap_arg0);
|
|
case 4: return offsetof(CPUAlphaState, trap_arg1);
|
|
case 5: return offsetof(CPUAlphaState, trap_arg2);
|
|
case 6: return offsetof(CPUAlphaState, exc_addr);
|
|
case 7: return offsetof(CPUAlphaState, palbr);
|
|
case 8: return offsetof(CPUAlphaState, ptbr);
|
|
case 9: return offsetof(CPUAlphaState, vptptr);
|
|
case 10: return offsetof(CPUAlphaState, unique);
|
|
case 11: return offsetof(CPUAlphaState, sysval);
|
|
case 12: return offsetof(CPUAlphaState, usp);
|
|
|
|
case 40 ... 63:
|
|
return offsetof(CPUAlphaState, scratch[pr - 40]);
|
|
|
|
case 251:
|
|
return offsetof(CPUAlphaState, alarm_expire);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static ExitStatus gen_mfpr(DisasContext *ctx, TCGv va, int regno)
|
|
{
|
|
void (*helper)(TCGv);
|
|
int data;
|
|
|
|
switch (regno) {
|
|
case 32 ... 39:
|
|
/* Accessing the "non-shadow" general registers. */
|
|
regno = regno == 39 ? 25 : regno - 32 + 8;
|
|
tcg_gen_mov_i64(va, cpu_std_ir[regno]);
|
|
break;
|
|
|
|
case 250: /* WALLTIME */
|
|
helper = gen_helper_get_walltime;
|
|
goto do_helper;
|
|
case 249: /* VMTIME */
|
|
helper = gen_helper_get_vmtime;
|
|
do_helper:
|
|
if (use_icount) {
|
|
gen_io_start();
|
|
helper(va);
|
|
gen_io_end();
|
|
return EXIT_PC_STALE;
|
|
} else {
|
|
helper(va);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
/* The basic registers are data only, and unknown registers
|
|
are read-zero, write-ignore. */
|
|
data = cpu_pr_data(regno);
|
|
if (data == 0) {
|
|
tcg_gen_movi_i64(va, 0);
|
|
} else if (data & PR_BYTE) {
|
|
tcg_gen_ld8u_i64(va, cpu_env, data & ~PR_BYTE);
|
|
} else if (data & PR_LONG) {
|
|
tcg_gen_ld32s_i64(va, cpu_env, data & ~PR_LONG);
|
|
} else {
|
|
tcg_gen_ld_i64(va, cpu_env, data);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return NO_EXIT;
|
|
}
|
|
|
|
static ExitStatus gen_mtpr(DisasContext *ctx, TCGv vb, int regno)
|
|
{
|
|
TCGv tmp;
|
|
int data;
|
|
|
|
switch (regno) {
|
|
case 255:
|
|
/* TBIA */
|
|
gen_helper_tbia(cpu_env);
|
|
break;
|
|
|
|
case 254:
|
|
/* TBIS */
|
|
gen_helper_tbis(cpu_env, vb);
|
|
break;
|
|
|
|
case 253:
|
|
/* WAIT */
|
|
tmp = tcg_const_i64(1);
|
|
tcg_gen_st32_i64(tmp, cpu_env, -offsetof(AlphaCPU, env) +
|
|
offsetof(CPUState, halted));
|
|
return gen_excp(ctx, EXCP_HLT, 0);
|
|
|
|
case 252:
|
|
/* HALT */
|
|
gen_helper_halt(vb);
|
|
return EXIT_PC_STALE;
|
|
|
|
case 251:
|
|
/* ALARM */
|
|
gen_helper_set_alarm(cpu_env, vb);
|
|
break;
|
|
|
|
case 7:
|
|
/* PALBR */
|
|
tcg_gen_st_i64(vb, cpu_env, offsetof(CPUAlphaState, palbr));
|
|
/* Changing the PAL base register implies un-chaining all of the TBs
|
|
that ended with a CALL_PAL. Since the base register usually only
|
|
changes during boot, flushing everything works well. */
|
|
gen_helper_tb_flush(cpu_env);
|
|
return EXIT_PC_STALE;
|
|
|
|
case 32 ... 39:
|
|
/* Accessing the "non-shadow" general registers. */
|
|
regno = regno == 39 ? 25 : regno - 32 + 8;
|
|
tcg_gen_mov_i64(cpu_std_ir[regno], vb);
|
|
break;
|
|
|
|
default:
|
|
/* The basic registers are data only, and unknown registers
|
|
are read-zero, write-ignore. */
|
|
data = cpu_pr_data(regno);
|
|
if (data != 0) {
|
|
if (data & PR_BYTE) {
|
|
tcg_gen_st8_i64(vb, cpu_env, data & ~PR_BYTE);
|
|
} else if (data & PR_LONG) {
|
|
tcg_gen_st32_i64(vb, cpu_env, data & ~PR_LONG);
|
|
} else {
|
|
tcg_gen_st_i64(vb, cpu_env, data);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
return NO_EXIT;
|
|
}
|
|
#endif /* !USER_ONLY*/
|
|
|
|
#define REQUIRE_NO_LIT \
|
|
do { \
|
|
if (real_islit) { \
|
|
goto invalid_opc; \
|
|
} \
|
|
} while (0)
|
|
|
|
#define REQUIRE_TB_FLAG(FLAG) \
|
|
do { \
|
|
if ((ctx->tb->flags & (FLAG)) == 0) { \
|
|
goto invalid_opc; \
|
|
} \
|
|
} while (0)
|
|
|
|
#define REQUIRE_REG_31(WHICH) \
|
|
do { \
|
|
if (WHICH != 31) { \
|
|
goto invalid_opc; \
|
|
} \
|
|
} while (0)
|
|
|
|
static ExitStatus translate_one(DisasContext *ctx, uint32_t insn)
|
|
{
|
|
int32_t disp21, disp16, disp12 __attribute__((unused));
|
|
uint16_t fn11;
|
|
uint8_t opc, ra, rb, rc, fpfn, fn7, lit;
|
|
bool islit, real_islit;
|
|
TCGv va, vb, vc, tmp, tmp2;
|
|
TCGv_i32 t32;
|
|
ExitStatus ret;
|
|
|
|
/* Decode all instruction fields */
|
|
opc = extract32(insn, 26, 6);
|
|
ra = extract32(insn, 21, 5);
|
|
rb = extract32(insn, 16, 5);
|
|
rc = extract32(insn, 0, 5);
|
|
real_islit = islit = extract32(insn, 12, 1);
|
|
lit = extract32(insn, 13, 8);
|
|
|
|
disp21 = sextract32(insn, 0, 21);
|
|
disp16 = sextract32(insn, 0, 16);
|
|
disp12 = sextract32(insn, 0, 12);
|
|
|
|
fn11 = extract32(insn, 5, 11);
|
|
fpfn = extract32(insn, 5, 6);
|
|
fn7 = extract32(insn, 5, 7);
|
|
|
|
if (rb == 31 && !islit) {
|
|
islit = true;
|
|
lit = 0;
|
|
}
|
|
|
|
ret = NO_EXIT;
|
|
switch (opc) {
|
|
case 0x00:
|
|
/* CALL_PAL */
|
|
ret = gen_call_pal(ctx, insn & 0x03ffffff);
|
|
break;
|
|
case 0x01:
|
|
/* OPC01 */
|
|
goto invalid_opc;
|
|
case 0x02:
|
|
/* OPC02 */
|
|
goto invalid_opc;
|
|
case 0x03:
|
|
/* OPC03 */
|
|
goto invalid_opc;
|
|
case 0x04:
|
|
/* OPC04 */
|
|
goto invalid_opc;
|
|
case 0x05:
|
|
/* OPC05 */
|
|
goto invalid_opc;
|
|
case 0x06:
|
|
/* OPC06 */
|
|
goto invalid_opc;
|
|
case 0x07:
|
|
/* OPC07 */
|
|
goto invalid_opc;
|
|
|
|
case 0x09:
|
|
/* LDAH */
|
|
disp16 = (uint32_t)disp16 << 16;
|
|
/* fall through */
|
|
case 0x08:
|
|
/* LDA */
|
|
va = dest_gpr(ctx, ra);
|
|
/* It's worth special-casing immediate loads. */
|
|
if (rb == 31) {
|
|
tcg_gen_movi_i64(va, disp16);
|
|
} else {
|
|
tcg_gen_addi_i64(va, load_gpr(ctx, rb), disp16);
|
|
}
|
|
break;
|
|
|
|
case 0x0A:
|
|
/* LDBU */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_BWX);
|
|
gen_load_mem(ctx, &tcg_gen_qemu_ld8u, ra, rb, disp16, 0, 0);
|
|
break;
|
|
case 0x0B:
|
|
/* LDQ_U */
|
|
gen_load_mem(ctx, &tcg_gen_qemu_ld64, ra, rb, disp16, 0, 1);
|
|
break;
|
|
case 0x0C:
|
|
/* LDWU */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_BWX);
|
|
gen_load_mem(ctx, &tcg_gen_qemu_ld16u, ra, rb, disp16, 0, 0);
|
|
break;
|
|
case 0x0D:
|
|
/* STW */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_BWX);
|
|
gen_store_mem(ctx, &tcg_gen_qemu_st16, ra, rb, disp16, 0, 0);
|
|
break;
|
|
case 0x0E:
|
|
/* STB */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_BWX);
|
|
gen_store_mem(ctx, &tcg_gen_qemu_st8, ra, rb, disp16, 0, 0);
|
|
break;
|
|
case 0x0F:
|
|
/* STQ_U */
|
|
gen_store_mem(ctx, &tcg_gen_qemu_st64, ra, rb, disp16, 0, 1);
|
|
break;
|
|
|
|
case 0x10:
|
|
vc = dest_gpr(ctx, rc);
|
|
vb = load_gpr_lit(ctx, rb, lit, islit);
|
|
|
|
if (ra == 31) {
|
|
if (fn7 == 0x00) {
|
|
/* Special case ADDL as SEXTL. */
|
|
tcg_gen_ext32s_i64(vc, vb);
|
|
break;
|
|
}
|
|
if (fn7 == 0x29) {
|
|
/* Special case SUBQ as NEGQ. */
|
|
tcg_gen_neg_i64(vc, vb);
|
|
break;
|
|
}
|
|
}
|
|
|
|
va = load_gpr(ctx, ra);
|
|
switch (fn7) {
|
|
case 0x00:
|
|
/* ADDL */
|
|
tcg_gen_add_i64(vc, va, vb);
|
|
tcg_gen_ext32s_i64(vc, vc);
|
|
break;
|
|
case 0x02:
|
|
/* S4ADDL */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_shli_i64(tmp, va, 2);
|
|
tcg_gen_add_i64(tmp, tmp, vb);
|
|
tcg_gen_ext32s_i64(vc, tmp);
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x09:
|
|
/* SUBL */
|
|
tcg_gen_sub_i64(vc, va, vb);
|
|
tcg_gen_ext32s_i64(vc, vc);
|
|
break;
|
|
case 0x0B:
|
|
/* S4SUBL */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_shli_i64(tmp, va, 2);
|
|
tcg_gen_sub_i64(tmp, tmp, vb);
|
|
tcg_gen_ext32s_i64(vc, tmp);
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x0F:
|
|
/* CMPBGE */
|
|
if (ra == 31) {
|
|
/* Special case 0 >= X as X == 0. */
|
|
gen_helper_cmpbe0(vc, vb);
|
|
} else {
|
|
gen_helper_cmpbge(vc, va, vb);
|
|
}
|
|
break;
|
|
case 0x12:
|
|
/* S8ADDL */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_shli_i64(tmp, va, 3);
|
|
tcg_gen_add_i64(tmp, tmp, vb);
|
|
tcg_gen_ext32s_i64(vc, tmp);
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x1B:
|
|
/* S8SUBL */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_shli_i64(tmp, va, 3);
|
|
tcg_gen_sub_i64(tmp, tmp, vb);
|
|
tcg_gen_ext32s_i64(vc, tmp);
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x1D:
|
|
/* CMPULT */
|
|
tcg_gen_setcond_i64(TCG_COND_LTU, vc, va, vb);
|
|
break;
|
|
case 0x20:
|
|
/* ADDQ */
|
|
tcg_gen_add_i64(vc, va, vb);
|
|
break;
|
|
case 0x22:
|
|
/* S4ADDQ */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_shli_i64(tmp, va, 2);
|
|
tcg_gen_add_i64(vc, tmp, vb);
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x29:
|
|
/* SUBQ */
|
|
tcg_gen_sub_i64(vc, va, vb);
|
|
break;
|
|
case 0x2B:
|
|
/* S4SUBQ */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_shli_i64(tmp, va, 2);
|
|
tcg_gen_sub_i64(vc, tmp, vb);
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x2D:
|
|
/* CMPEQ */
|
|
tcg_gen_setcond_i64(TCG_COND_EQ, vc, va, vb);
|
|
break;
|
|
case 0x32:
|
|
/* S8ADDQ */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_shli_i64(tmp, va, 3);
|
|
tcg_gen_add_i64(vc, tmp, vb);
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x3B:
|
|
/* S8SUBQ */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_shli_i64(tmp, va, 3);
|
|
tcg_gen_sub_i64(vc, tmp, vb);
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x3D:
|
|
/* CMPULE */
|
|
tcg_gen_setcond_i64(TCG_COND_LEU, vc, va, vb);
|
|
break;
|
|
case 0x40:
|
|
/* ADDL/V */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_ext32s_i64(tmp, va);
|
|
tcg_gen_ext32s_i64(vc, vb);
|
|
tcg_gen_add_i64(tmp, tmp, vc);
|
|
tcg_gen_ext32s_i64(vc, tmp);
|
|
gen_helper_check_overflow(cpu_env, vc, tmp);
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x49:
|
|
/* SUBL/V */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_ext32s_i64(tmp, va);
|
|
tcg_gen_ext32s_i64(vc, vb);
|
|
tcg_gen_sub_i64(tmp, tmp, vc);
|
|
tcg_gen_ext32s_i64(vc, tmp);
|
|
gen_helper_check_overflow(cpu_env, vc, tmp);
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x4D:
|
|
/* CMPLT */
|
|
tcg_gen_setcond_i64(TCG_COND_LT, vc, va, vb);
|
|
break;
|
|
case 0x60:
|
|
/* ADDQ/V */
|
|
tmp = tcg_temp_new();
|
|
tmp2 = tcg_temp_new();
|
|
tcg_gen_eqv_i64(tmp, va, vb);
|
|
tcg_gen_mov_i64(tmp2, va);
|
|
tcg_gen_add_i64(vc, va, vb);
|
|
tcg_gen_xor_i64(tmp2, tmp2, vc);
|
|
tcg_gen_and_i64(tmp, tmp, tmp2);
|
|
tcg_gen_shri_i64(tmp, tmp, 63);
|
|
tcg_gen_movi_i64(tmp2, 0);
|
|
gen_helper_check_overflow(cpu_env, tmp, tmp2);
|
|
tcg_temp_free(tmp);
|
|
tcg_temp_free(tmp2);
|
|
break;
|
|
case 0x69:
|
|
/* SUBQ/V */
|
|
tmp = tcg_temp_new();
|
|
tmp2 = tcg_temp_new();
|
|
tcg_gen_xor_i64(tmp, va, vb);
|
|
tcg_gen_mov_i64(tmp2, va);
|
|
tcg_gen_sub_i64(vc, va, vb);
|
|
tcg_gen_xor_i64(tmp2, tmp2, vc);
|
|
tcg_gen_and_i64(tmp, tmp, tmp2);
|
|
tcg_gen_shri_i64(tmp, tmp, 63);
|
|
tcg_gen_movi_i64(tmp2, 0);
|
|
gen_helper_check_overflow(cpu_env, tmp, tmp2);
|
|
tcg_temp_free(tmp);
|
|
tcg_temp_free(tmp2);
|
|
break;
|
|
case 0x6D:
|
|
/* CMPLE */
|
|
tcg_gen_setcond_i64(TCG_COND_LE, vc, va, vb);
|
|
break;
|
|
default:
|
|
goto invalid_opc;
|
|
}
|
|
break;
|
|
|
|
case 0x11:
|
|
if (fn7 == 0x20) {
|
|
if (rc == 31) {
|
|
/* Special case BIS as NOP. */
|
|
break;
|
|
}
|
|
if (ra == 31) {
|
|
/* Special case BIS as MOV. */
|
|
vc = dest_gpr(ctx, rc);
|
|
if (islit) {
|
|
tcg_gen_movi_i64(vc, lit);
|
|
} else {
|
|
tcg_gen_mov_i64(vc, load_gpr(ctx, rb));
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
vc = dest_gpr(ctx, rc);
|
|
vb = load_gpr_lit(ctx, rb, lit, islit);
|
|
|
|
if (fn7 == 0x28 && ra == 31) {
|
|
/* Special case ORNOT as NOT. */
|
|
tcg_gen_not_i64(vc, vb);
|
|
break;
|
|
}
|
|
|
|
va = load_gpr(ctx, ra);
|
|
switch (fn7) {
|
|
case 0x00:
|
|
/* AND */
|
|
tcg_gen_and_i64(vc, va, vb);
|
|
break;
|
|
case 0x08:
|
|
/* BIC */
|
|
tcg_gen_andc_i64(vc, va, vb);
|
|
break;
|
|
case 0x14:
|
|
/* CMOVLBS */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_andi_i64(tmp, va, 1);
|
|
tcg_gen_movcond_i64(TCG_COND_NE, vc, tmp, load_zero(ctx),
|
|
vb, load_gpr(ctx, rc));
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x16:
|
|
/* CMOVLBC */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_andi_i64(tmp, va, 1);
|
|
tcg_gen_movcond_i64(TCG_COND_EQ, vc, tmp, load_zero(ctx),
|
|
vb, load_gpr(ctx, rc));
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x20:
|
|
/* BIS */
|
|
tcg_gen_or_i64(vc, va, vb);
|
|
break;
|
|
case 0x24:
|
|
/* CMOVEQ */
|
|
tcg_gen_movcond_i64(TCG_COND_EQ, vc, va, load_zero(ctx),
|
|
vb, load_gpr(ctx, rc));
|
|
break;
|
|
case 0x26:
|
|
/* CMOVNE */
|
|
tcg_gen_movcond_i64(TCG_COND_NE, vc, va, load_zero(ctx),
|
|
vb, load_gpr(ctx, rc));
|
|
break;
|
|
case 0x28:
|
|
/* ORNOT */
|
|
tcg_gen_orc_i64(vc, va, vb);
|
|
break;
|
|
case 0x40:
|
|
/* XOR */
|
|
tcg_gen_xor_i64(vc, va, vb);
|
|
break;
|
|
case 0x44:
|
|
/* CMOVLT */
|
|
tcg_gen_movcond_i64(TCG_COND_LT, vc, va, load_zero(ctx),
|
|
vb, load_gpr(ctx, rc));
|
|
break;
|
|
case 0x46:
|
|
/* CMOVGE */
|
|
tcg_gen_movcond_i64(TCG_COND_GE, vc, va, load_zero(ctx),
|
|
vb, load_gpr(ctx, rc));
|
|
break;
|
|
case 0x48:
|
|
/* EQV */
|
|
tcg_gen_eqv_i64(vc, va, vb);
|
|
break;
|
|
case 0x61:
|
|
/* AMASK */
|
|
REQUIRE_REG_31(ra);
|
|
{
|
|
uint64_t amask = ctx->tb->flags >> TB_FLAGS_AMASK_SHIFT;
|
|
tcg_gen_andi_i64(vc, vb, ~amask);
|
|
}
|
|
break;
|
|
case 0x64:
|
|
/* CMOVLE */
|
|
tcg_gen_movcond_i64(TCG_COND_LE, vc, va, load_zero(ctx),
|
|
vb, load_gpr(ctx, rc));
|
|
break;
|
|
case 0x66:
|
|
/* CMOVGT */
|
|
tcg_gen_movcond_i64(TCG_COND_GT, vc, va, load_zero(ctx),
|
|
vb, load_gpr(ctx, rc));
|
|
break;
|
|
case 0x6C:
|
|
/* IMPLVER */
|
|
REQUIRE_REG_31(ra);
|
|
tcg_gen_movi_i64(vc, ctx->implver);
|
|
break;
|
|
default:
|
|
goto invalid_opc;
|
|
}
|
|
break;
|
|
|
|
case 0x12:
|
|
vc = dest_gpr(ctx, rc);
|
|
va = load_gpr(ctx, ra);
|
|
switch (fn7) {
|
|
case 0x02:
|
|
/* MSKBL */
|
|
gen_msk_l(ctx, vc, va, rb, islit, lit, 0x01);
|
|
break;
|
|
case 0x06:
|
|
/* EXTBL */
|
|
gen_ext_l(ctx, vc, va, rb, islit, lit, 0x01);
|
|
break;
|
|
case 0x0B:
|
|
/* INSBL */
|
|
gen_ins_l(ctx, vc, va, rb, islit, lit, 0x01);
|
|
break;
|
|
case 0x12:
|
|
/* MSKWL */
|
|
gen_msk_l(ctx, vc, va, rb, islit, lit, 0x03);
|
|
break;
|
|
case 0x16:
|
|
/* EXTWL */
|
|
gen_ext_l(ctx, vc, va, rb, islit, lit, 0x03);
|
|
break;
|
|
case 0x1B:
|
|
/* INSWL */
|
|
gen_ins_l(ctx, vc, va, rb, islit, lit, 0x03);
|
|
break;
|
|
case 0x22:
|
|
/* MSKLL */
|
|
gen_msk_l(ctx, vc, va, rb, islit, lit, 0x0f);
|
|
break;
|
|
case 0x26:
|
|
/* EXTLL */
|
|
gen_ext_l(ctx, vc, va, rb, islit, lit, 0x0f);
|
|
break;
|
|
case 0x2B:
|
|
/* INSLL */
|
|
gen_ins_l(ctx, vc, va, rb, islit, lit, 0x0f);
|
|
break;
|
|
case 0x30:
|
|
/* ZAP */
|
|
if (islit) {
|
|
gen_zapnoti(vc, va, ~lit);
|
|
} else {
|
|
gen_helper_zap(vc, va, load_gpr(ctx, rb));
|
|
}
|
|
break;
|
|
case 0x31:
|
|
/* ZAPNOT */
|
|
if (islit) {
|
|
gen_zapnoti(vc, va, lit);
|
|
} else {
|
|
gen_helper_zapnot(vc, va, load_gpr(ctx, rb));
|
|
}
|
|
break;
|
|
case 0x32:
|
|
/* MSKQL */
|
|
gen_msk_l(ctx, vc, va, rb, islit, lit, 0xff);
|
|
break;
|
|
case 0x34:
|
|
/* SRL */
|
|
if (islit) {
|
|
tcg_gen_shri_i64(vc, va, lit & 0x3f);
|
|
} else {
|
|
tmp = tcg_temp_new();
|
|
vb = load_gpr(ctx, rb);
|
|
tcg_gen_andi_i64(tmp, vb, 0x3f);
|
|
tcg_gen_shr_i64(vc, va, tmp);
|
|
tcg_temp_free(tmp);
|
|
}
|
|
break;
|
|
case 0x36:
|
|
/* EXTQL */
|
|
gen_ext_l(ctx, vc, va, rb, islit, lit, 0xff);
|
|
break;
|
|
case 0x39:
|
|
/* SLL */
|
|
if (islit) {
|
|
tcg_gen_shli_i64(vc, va, lit & 0x3f);
|
|
} else {
|
|
tmp = tcg_temp_new();
|
|
vb = load_gpr(ctx, rb);
|
|
tcg_gen_andi_i64(tmp, vb, 0x3f);
|
|
tcg_gen_shl_i64(vc, va, tmp);
|
|
tcg_temp_free(tmp);
|
|
}
|
|
break;
|
|
case 0x3B:
|
|
/* INSQL */
|
|
gen_ins_l(ctx, vc, va, rb, islit, lit, 0xff);
|
|
break;
|
|
case 0x3C:
|
|
/* SRA */
|
|
if (islit) {
|
|
tcg_gen_sari_i64(vc, va, lit & 0x3f);
|
|
} else {
|
|
tmp = tcg_temp_new();
|
|
vb = load_gpr(ctx, rb);
|
|
tcg_gen_andi_i64(tmp, vb, 0x3f);
|
|
tcg_gen_sar_i64(vc, va, tmp);
|
|
tcg_temp_free(tmp);
|
|
}
|
|
break;
|
|
case 0x52:
|
|
/* MSKWH */
|
|
gen_msk_h(ctx, vc, va, rb, islit, lit, 0x03);
|
|
break;
|
|
case 0x57:
|
|
/* INSWH */
|
|
gen_ins_h(ctx, vc, va, rb, islit, lit, 0x03);
|
|
break;
|
|
case 0x5A:
|
|
/* EXTWH */
|
|
gen_ext_h(ctx, vc, va, rb, islit, lit, 0x03);
|
|
break;
|
|
case 0x62:
|
|
/* MSKLH */
|
|
gen_msk_h(ctx, vc, va, rb, islit, lit, 0x0f);
|
|
break;
|
|
case 0x67:
|
|
/* INSLH */
|
|
gen_ins_h(ctx, vc, va, rb, islit, lit, 0x0f);
|
|
break;
|
|
case 0x6A:
|
|
/* EXTLH */
|
|
gen_ext_h(ctx, vc, va, rb, islit, lit, 0x0f);
|
|
break;
|
|
case 0x72:
|
|
/* MSKQH */
|
|
gen_msk_h(ctx, vc, va, rb, islit, lit, 0xff);
|
|
break;
|
|
case 0x77:
|
|
/* INSQH */
|
|
gen_ins_h(ctx, vc, va, rb, islit, lit, 0xff);
|
|
break;
|
|
case 0x7A:
|
|
/* EXTQH */
|
|
gen_ext_h(ctx, vc, va, rb, islit, lit, 0xff);
|
|
break;
|
|
default:
|
|
goto invalid_opc;
|
|
}
|
|
break;
|
|
|
|
case 0x13:
|
|
vc = dest_gpr(ctx, rc);
|
|
vb = load_gpr_lit(ctx, rb, lit, islit);
|
|
va = load_gpr(ctx, ra);
|
|
switch (fn7) {
|
|
case 0x00:
|
|
/* MULL */
|
|
tcg_gen_mul_i64(vc, va, vb);
|
|
tcg_gen_ext32s_i64(vc, vc);
|
|
break;
|
|
case 0x20:
|
|
/* MULQ */
|
|
tcg_gen_mul_i64(vc, va, vb);
|
|
break;
|
|
case 0x30:
|
|
/* UMULH */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_mulu2_i64(tmp, vc, va, vb);
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x40:
|
|
/* MULL/V */
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_ext32s_i64(tmp, va);
|
|
tcg_gen_ext32s_i64(vc, vb);
|
|
tcg_gen_mul_i64(tmp, tmp, vc);
|
|
tcg_gen_ext32s_i64(vc, tmp);
|
|
gen_helper_check_overflow(cpu_env, vc, tmp);
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x60:
|
|
/* MULQ/V */
|
|
tmp = tcg_temp_new();
|
|
tmp2 = tcg_temp_new();
|
|
tcg_gen_muls2_i64(vc, tmp, va, vb);
|
|
tcg_gen_sari_i64(tmp2, vc, 63);
|
|
gen_helper_check_overflow(cpu_env, tmp, tmp2);
|
|
tcg_temp_free(tmp);
|
|
tcg_temp_free(tmp2);
|
|
break;
|
|
default:
|
|
goto invalid_opc;
|
|
}
|
|
break;
|
|
|
|
case 0x14:
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_FIX);
|
|
vc = dest_fpr(ctx, rc);
|
|
switch (fpfn) { /* fn11 & 0x3F */
|
|
case 0x04:
|
|
/* ITOFS */
|
|
REQUIRE_REG_31(rb);
|
|
t32 = tcg_temp_new_i32();
|
|
va = load_gpr(ctx, ra);
|
|
tcg_gen_extrl_i64_i32(t32, va);
|
|
gen_helper_memory_to_s(vc, t32);
|
|
tcg_temp_free_i32(t32);
|
|
break;
|
|
case 0x0A:
|
|
/* SQRTF */
|
|
REQUIRE_REG_31(ra);
|
|
vb = load_fpr(ctx, rb);
|
|
gen_helper_sqrtf(vc, cpu_env, vb);
|
|
break;
|
|
case 0x0B:
|
|
/* SQRTS */
|
|
REQUIRE_REG_31(ra);
|
|
gen_sqrts(ctx, rb, rc, fn11);
|
|
break;
|
|
case 0x14:
|
|
/* ITOFF */
|
|
REQUIRE_REG_31(rb);
|
|
t32 = tcg_temp_new_i32();
|
|
va = load_gpr(ctx, ra);
|
|
tcg_gen_extrl_i64_i32(t32, va);
|
|
gen_helper_memory_to_f(vc, t32);
|
|
tcg_temp_free_i32(t32);
|
|
break;
|
|
case 0x24:
|
|
/* ITOFT */
|
|
REQUIRE_REG_31(rb);
|
|
va = load_gpr(ctx, ra);
|
|
tcg_gen_mov_i64(vc, va);
|
|
break;
|
|
case 0x2A:
|
|
/* SQRTG */
|
|
REQUIRE_REG_31(ra);
|
|
vb = load_fpr(ctx, rb);
|
|
gen_helper_sqrtg(vc, cpu_env, vb);
|
|
break;
|
|
case 0x02B:
|
|
/* SQRTT */
|
|
REQUIRE_REG_31(ra);
|
|
gen_sqrtt(ctx, rb, rc, fn11);
|
|
break;
|
|
default:
|
|
goto invalid_opc;
|
|
}
|
|
break;
|
|
|
|
case 0x15:
|
|
/* VAX floating point */
|
|
/* XXX: rounding mode and trap are ignored (!) */
|
|
vc = dest_fpr(ctx, rc);
|
|
vb = load_fpr(ctx, rb);
|
|
va = load_fpr(ctx, ra);
|
|
switch (fpfn) { /* fn11 & 0x3F */
|
|
case 0x00:
|
|
/* ADDF */
|
|
gen_helper_addf(vc, cpu_env, va, vb);
|
|
break;
|
|
case 0x01:
|
|
/* SUBF */
|
|
gen_helper_subf(vc, cpu_env, va, vb);
|
|
break;
|
|
case 0x02:
|
|
/* MULF */
|
|
gen_helper_mulf(vc, cpu_env, va, vb);
|
|
break;
|
|
case 0x03:
|
|
/* DIVF */
|
|
gen_helper_divf(vc, cpu_env, va, vb);
|
|
break;
|
|
case 0x1E:
|
|
/* CVTDG -- TODO */
|
|
REQUIRE_REG_31(ra);
|
|
goto invalid_opc;
|
|
case 0x20:
|
|
/* ADDG */
|
|
gen_helper_addg(vc, cpu_env, va, vb);
|
|
break;
|
|
case 0x21:
|
|
/* SUBG */
|
|
gen_helper_subg(vc, cpu_env, va, vb);
|
|
break;
|
|
case 0x22:
|
|
/* MULG */
|
|
gen_helper_mulg(vc, cpu_env, va, vb);
|
|
break;
|
|
case 0x23:
|
|
/* DIVG */
|
|
gen_helper_divg(vc, cpu_env, va, vb);
|
|
break;
|
|
case 0x25:
|
|
/* CMPGEQ */
|
|
gen_helper_cmpgeq(vc, cpu_env, va, vb);
|
|
break;
|
|
case 0x26:
|
|
/* CMPGLT */
|
|
gen_helper_cmpglt(vc, cpu_env, va, vb);
|
|
break;
|
|
case 0x27:
|
|
/* CMPGLE */
|
|
gen_helper_cmpgle(vc, cpu_env, va, vb);
|
|
break;
|
|
case 0x2C:
|
|
/* CVTGF */
|
|
REQUIRE_REG_31(ra);
|
|
gen_helper_cvtgf(vc, cpu_env, vb);
|
|
break;
|
|
case 0x2D:
|
|
/* CVTGD -- TODO */
|
|
REQUIRE_REG_31(ra);
|
|
goto invalid_opc;
|
|
case 0x2F:
|
|
/* CVTGQ */
|
|
REQUIRE_REG_31(ra);
|
|
gen_helper_cvtgq(vc, cpu_env, vb);
|
|
break;
|
|
case 0x3C:
|
|
/* CVTQF */
|
|
REQUIRE_REG_31(ra);
|
|
gen_helper_cvtqf(vc, cpu_env, vb);
|
|
break;
|
|
case 0x3E:
|
|
/* CVTQG */
|
|
REQUIRE_REG_31(ra);
|
|
gen_helper_cvtqg(vc, cpu_env, vb);
|
|
break;
|
|
default:
|
|
goto invalid_opc;
|
|
}
|
|
break;
|
|
|
|
case 0x16:
|
|
/* IEEE floating-point */
|
|
switch (fpfn) { /* fn11 & 0x3F */
|
|
case 0x00:
|
|
/* ADDS */
|
|
gen_adds(ctx, ra, rb, rc, fn11);
|
|
break;
|
|
case 0x01:
|
|
/* SUBS */
|
|
gen_subs(ctx, ra, rb, rc, fn11);
|
|
break;
|
|
case 0x02:
|
|
/* MULS */
|
|
gen_muls(ctx, ra, rb, rc, fn11);
|
|
break;
|
|
case 0x03:
|
|
/* DIVS */
|
|
gen_divs(ctx, ra, rb, rc, fn11);
|
|
break;
|
|
case 0x20:
|
|
/* ADDT */
|
|
gen_addt(ctx, ra, rb, rc, fn11);
|
|
break;
|
|
case 0x21:
|
|
/* SUBT */
|
|
gen_subt(ctx, ra, rb, rc, fn11);
|
|
break;
|
|
case 0x22:
|
|
/* MULT */
|
|
gen_mult(ctx, ra, rb, rc, fn11);
|
|
break;
|
|
case 0x23:
|
|
/* DIVT */
|
|
gen_divt(ctx, ra, rb, rc, fn11);
|
|
break;
|
|
case 0x24:
|
|
/* CMPTUN */
|
|
gen_cmptun(ctx, ra, rb, rc, fn11);
|
|
break;
|
|
case 0x25:
|
|
/* CMPTEQ */
|
|
gen_cmpteq(ctx, ra, rb, rc, fn11);
|
|
break;
|
|
case 0x26:
|
|
/* CMPTLT */
|
|
gen_cmptlt(ctx, ra, rb, rc, fn11);
|
|
break;
|
|
case 0x27:
|
|
/* CMPTLE */
|
|
gen_cmptle(ctx, ra, rb, rc, fn11);
|
|
break;
|
|
case 0x2C:
|
|
REQUIRE_REG_31(ra);
|
|
if (fn11 == 0x2AC || fn11 == 0x6AC) {
|
|
/* CVTST */
|
|
gen_cvtst(ctx, rb, rc, fn11);
|
|
} else {
|
|
/* CVTTS */
|
|
gen_cvtts(ctx, rb, rc, fn11);
|
|
}
|
|
break;
|
|
case 0x2F:
|
|
/* CVTTQ */
|
|
REQUIRE_REG_31(ra);
|
|
gen_cvttq(ctx, rb, rc, fn11);
|
|
break;
|
|
case 0x3C:
|
|
/* CVTQS */
|
|
REQUIRE_REG_31(ra);
|
|
gen_cvtqs(ctx, rb, rc, fn11);
|
|
break;
|
|
case 0x3E:
|
|
/* CVTQT */
|
|
REQUIRE_REG_31(ra);
|
|
gen_cvtqt(ctx, rb, rc, fn11);
|
|
break;
|
|
default:
|
|
goto invalid_opc;
|
|
}
|
|
break;
|
|
|
|
case 0x17:
|
|
switch (fn11) {
|
|
case 0x010:
|
|
/* CVTLQ */
|
|
REQUIRE_REG_31(ra);
|
|
vc = dest_fpr(ctx, rc);
|
|
vb = load_fpr(ctx, rb);
|
|
gen_cvtlq(vc, vb);
|
|
break;
|
|
case 0x020:
|
|
/* CPYS */
|
|
if (rc == 31) {
|
|
/* Special case CPYS as FNOP. */
|
|
} else {
|
|
vc = dest_fpr(ctx, rc);
|
|
va = load_fpr(ctx, ra);
|
|
if (ra == rb) {
|
|
/* Special case CPYS as FMOV. */
|
|
tcg_gen_mov_i64(vc, va);
|
|
} else {
|
|
vb = load_fpr(ctx, rb);
|
|
gen_cpy_mask(vc, va, vb, 0, 0x8000000000000000ULL);
|
|
}
|
|
}
|
|
break;
|
|
case 0x021:
|
|
/* CPYSN */
|
|
vc = dest_fpr(ctx, rc);
|
|
vb = load_fpr(ctx, rb);
|
|
va = load_fpr(ctx, ra);
|
|
gen_cpy_mask(vc, va, vb, 1, 0x8000000000000000ULL);
|
|
break;
|
|
case 0x022:
|
|
/* CPYSE */
|
|
vc = dest_fpr(ctx, rc);
|
|
vb = load_fpr(ctx, rb);
|
|
va = load_fpr(ctx, ra);
|
|
gen_cpy_mask(vc, va, vb, 0, 0xFFF0000000000000ULL);
|
|
break;
|
|
case 0x024:
|
|
/* MT_FPCR */
|
|
va = load_fpr(ctx, ra);
|
|
gen_helper_store_fpcr(cpu_env, va);
|
|
if (ctx->tb_rm == QUAL_RM_D) {
|
|
/* Re-do the copy of the rounding mode to fp_status
|
|
the next time we use dynamic rounding. */
|
|
ctx->tb_rm = -1;
|
|
}
|
|
break;
|
|
case 0x025:
|
|
/* MF_FPCR */
|
|
va = dest_fpr(ctx, ra);
|
|
gen_helper_load_fpcr(va, cpu_env);
|
|
break;
|
|
case 0x02A:
|
|
/* FCMOVEQ */
|
|
gen_fcmov(ctx, TCG_COND_EQ, ra, rb, rc);
|
|
break;
|
|
case 0x02B:
|
|
/* FCMOVNE */
|
|
gen_fcmov(ctx, TCG_COND_NE, ra, rb, rc);
|
|
break;
|
|
case 0x02C:
|
|
/* FCMOVLT */
|
|
gen_fcmov(ctx, TCG_COND_LT, ra, rb, rc);
|
|
break;
|
|
case 0x02D:
|
|
/* FCMOVGE */
|
|
gen_fcmov(ctx, TCG_COND_GE, ra, rb, rc);
|
|
break;
|
|
case 0x02E:
|
|
/* FCMOVLE */
|
|
gen_fcmov(ctx, TCG_COND_LE, ra, rb, rc);
|
|
break;
|
|
case 0x02F:
|
|
/* FCMOVGT */
|
|
gen_fcmov(ctx, TCG_COND_GT, ra, rb, rc);
|
|
break;
|
|
case 0x030: /* CVTQL */
|
|
case 0x130: /* CVTQL/V */
|
|
case 0x530: /* CVTQL/SV */
|
|
REQUIRE_REG_31(ra);
|
|
vc = dest_fpr(ctx, rc);
|
|
vb = load_fpr(ctx, rb);
|
|
gen_helper_cvtql(vc, cpu_env, vb);
|
|
gen_fp_exc_raise(rc, fn11);
|
|
break;
|
|
default:
|
|
goto invalid_opc;
|
|
}
|
|
break;
|
|
|
|
case 0x18:
|
|
switch ((uint16_t)disp16) {
|
|
case 0x0000:
|
|
/* TRAPB */
|
|
/* No-op. */
|
|
break;
|
|
case 0x0400:
|
|
/* EXCB */
|
|
/* No-op. */
|
|
break;
|
|
case 0x4000:
|
|
/* MB */
|
|
tcg_gen_mb(TCG_MO_ALL | TCG_BAR_SC);
|
|
break;
|
|
case 0x4400:
|
|
/* WMB */
|
|
tcg_gen_mb(TCG_MO_ST_ST | TCG_BAR_SC);
|
|
break;
|
|
case 0x8000:
|
|
/* FETCH */
|
|
/* No-op */
|
|
break;
|
|
case 0xA000:
|
|
/* FETCH_M */
|
|
/* No-op */
|
|
break;
|
|
case 0xC000:
|
|
/* RPCC */
|
|
va = dest_gpr(ctx, ra);
|
|
if (ctx->tb->cflags & CF_USE_ICOUNT) {
|
|
gen_io_start();
|
|
gen_helper_load_pcc(va, cpu_env);
|
|
gen_io_end();
|
|
ret = EXIT_PC_STALE;
|
|
} else {
|
|
gen_helper_load_pcc(va, cpu_env);
|
|
}
|
|
break;
|
|
case 0xE000:
|
|
/* RC */
|
|
gen_rx(ctx, ra, 0);
|
|
break;
|
|
case 0xE800:
|
|
/* ECB */
|
|
break;
|
|
case 0xF000:
|
|
/* RS */
|
|
gen_rx(ctx, ra, 1);
|
|
break;
|
|
case 0xF800:
|
|
/* WH64 */
|
|
/* No-op */
|
|
break;
|
|
case 0xFC00:
|
|
/* WH64EN */
|
|
/* No-op */
|
|
break;
|
|
default:
|
|
goto invalid_opc;
|
|
}
|
|
break;
|
|
|
|
case 0x19:
|
|
/* HW_MFPR (PALcode) */
|
|
#ifndef CONFIG_USER_ONLY
|
|
REQUIRE_TB_FLAG(TB_FLAGS_PAL_MODE);
|
|
va = dest_gpr(ctx, ra);
|
|
ret = gen_mfpr(ctx, va, insn & 0xffff);
|
|
break;
|
|
#else
|
|
goto invalid_opc;
|
|
#endif
|
|
|
|
case 0x1A:
|
|
/* JMP, JSR, RET, JSR_COROUTINE. These only differ by the branch
|
|
prediction stack action, which of course we don't implement. */
|
|
vb = load_gpr(ctx, rb);
|
|
tcg_gen_andi_i64(cpu_pc, vb, ~3);
|
|
if (ra != 31) {
|
|
tcg_gen_movi_i64(ctx->ir[ra], ctx->pc);
|
|
}
|
|
ret = EXIT_PC_UPDATED;
|
|
break;
|
|
|
|
case 0x1B:
|
|
/* HW_LD (PALcode) */
|
|
#ifndef CONFIG_USER_ONLY
|
|
REQUIRE_TB_FLAG(TB_FLAGS_PAL_MODE);
|
|
{
|
|
TCGv addr = tcg_temp_new();
|
|
vb = load_gpr(ctx, rb);
|
|
va = dest_gpr(ctx, ra);
|
|
|
|
tcg_gen_addi_i64(addr, vb, disp12);
|
|
switch ((insn >> 12) & 0xF) {
|
|
case 0x0:
|
|
/* Longword physical access (hw_ldl/p) */
|
|
tcg_gen_qemu_ld_i64(va, addr, MMU_PHYS_IDX, MO_LESL);
|
|
break;
|
|
case 0x1:
|
|
/* Quadword physical access (hw_ldq/p) */
|
|
tcg_gen_qemu_ld_i64(va, addr, MMU_PHYS_IDX, MO_LEQ);
|
|
break;
|
|
case 0x2:
|
|
/* Longword physical access with lock (hw_ldl_l/p) */
|
|
gen_qemu_ldl_l(va, addr, MMU_PHYS_IDX);
|
|
break;
|
|
case 0x3:
|
|
/* Quadword physical access with lock (hw_ldq_l/p) */
|
|
gen_qemu_ldq_l(va, addr, MMU_PHYS_IDX);
|
|
break;
|
|
case 0x4:
|
|
/* Longword virtual PTE fetch (hw_ldl/v) */
|
|
goto invalid_opc;
|
|
case 0x5:
|
|
/* Quadword virtual PTE fetch (hw_ldq/v) */
|
|
goto invalid_opc;
|
|
break;
|
|
case 0x6:
|
|
/* Invalid */
|
|
goto invalid_opc;
|
|
case 0x7:
|
|
/* Invaliid */
|
|
goto invalid_opc;
|
|
case 0x8:
|
|
/* Longword virtual access (hw_ldl) */
|
|
goto invalid_opc;
|
|
case 0x9:
|
|
/* Quadword virtual access (hw_ldq) */
|
|
goto invalid_opc;
|
|
case 0xA:
|
|
/* Longword virtual access with protection check (hw_ldl/w) */
|
|
tcg_gen_qemu_ld_i64(va, addr, MMU_KERNEL_IDX, MO_LESL);
|
|
break;
|
|
case 0xB:
|
|
/* Quadword virtual access with protection check (hw_ldq/w) */
|
|
tcg_gen_qemu_ld_i64(va, addr, MMU_KERNEL_IDX, MO_LEQ);
|
|
break;
|
|
case 0xC:
|
|
/* Longword virtual access with alt access mode (hw_ldl/a)*/
|
|
goto invalid_opc;
|
|
case 0xD:
|
|
/* Quadword virtual access with alt access mode (hw_ldq/a) */
|
|
goto invalid_opc;
|
|
case 0xE:
|
|
/* Longword virtual access with alternate access mode and
|
|
protection checks (hw_ldl/wa) */
|
|
tcg_gen_qemu_ld_i64(va, addr, MMU_USER_IDX, MO_LESL);
|
|
break;
|
|
case 0xF:
|
|
/* Quadword virtual access with alternate access mode and
|
|
protection checks (hw_ldq/wa) */
|
|
tcg_gen_qemu_ld_i64(va, addr, MMU_USER_IDX, MO_LEQ);
|
|
break;
|
|
}
|
|
tcg_temp_free(addr);
|
|
break;
|
|
}
|
|
#else
|
|
goto invalid_opc;
|
|
#endif
|
|
|
|
case 0x1C:
|
|
vc = dest_gpr(ctx, rc);
|
|
if (fn7 == 0x70) {
|
|
/* FTOIT */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_FIX);
|
|
REQUIRE_REG_31(rb);
|
|
va = load_fpr(ctx, ra);
|
|
tcg_gen_mov_i64(vc, va);
|
|
break;
|
|
} else if (fn7 == 0x78) {
|
|
/* FTOIS */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_FIX);
|
|
REQUIRE_REG_31(rb);
|
|
t32 = tcg_temp_new_i32();
|
|
va = load_fpr(ctx, ra);
|
|
gen_helper_s_to_memory(t32, va);
|
|
tcg_gen_ext_i32_i64(vc, t32);
|
|
tcg_temp_free_i32(t32);
|
|
break;
|
|
}
|
|
|
|
vb = load_gpr_lit(ctx, rb, lit, islit);
|
|
switch (fn7) {
|
|
case 0x00:
|
|
/* SEXTB */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_BWX);
|
|
REQUIRE_REG_31(ra);
|
|
tcg_gen_ext8s_i64(vc, vb);
|
|
break;
|
|
case 0x01:
|
|
/* SEXTW */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_BWX);
|
|
REQUIRE_REG_31(ra);
|
|
tcg_gen_ext16s_i64(vc, vb);
|
|
break;
|
|
case 0x30:
|
|
/* CTPOP */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_CIX);
|
|
REQUIRE_REG_31(ra);
|
|
REQUIRE_NO_LIT;
|
|
tcg_gen_ctpop_i64(vc, vb);
|
|
break;
|
|
case 0x31:
|
|
/* PERR */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_MVI);
|
|
REQUIRE_NO_LIT;
|
|
va = load_gpr(ctx, ra);
|
|
gen_helper_perr(vc, va, vb);
|
|
break;
|
|
case 0x32:
|
|
/* CTLZ */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_CIX);
|
|
REQUIRE_REG_31(ra);
|
|
REQUIRE_NO_LIT;
|
|
tcg_gen_clzi_i64(vc, vb, 64);
|
|
break;
|
|
case 0x33:
|
|
/* CTTZ */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_CIX);
|
|
REQUIRE_REG_31(ra);
|
|
REQUIRE_NO_LIT;
|
|
tcg_gen_ctzi_i64(vc, vb, 64);
|
|
break;
|
|
case 0x34:
|
|
/* UNPKBW */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_MVI);
|
|
REQUIRE_REG_31(ra);
|
|
REQUIRE_NO_LIT;
|
|
gen_helper_unpkbw(vc, vb);
|
|
break;
|
|
case 0x35:
|
|
/* UNPKBL */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_MVI);
|
|
REQUIRE_REG_31(ra);
|
|
REQUIRE_NO_LIT;
|
|
gen_helper_unpkbl(vc, vb);
|
|
break;
|
|
case 0x36:
|
|
/* PKWB */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_MVI);
|
|
REQUIRE_REG_31(ra);
|
|
REQUIRE_NO_LIT;
|
|
gen_helper_pkwb(vc, vb);
|
|
break;
|
|
case 0x37:
|
|
/* PKLB */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_MVI);
|
|
REQUIRE_REG_31(ra);
|
|
REQUIRE_NO_LIT;
|
|
gen_helper_pklb(vc, vb);
|
|
break;
|
|
case 0x38:
|
|
/* MINSB8 */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_MVI);
|
|
va = load_gpr(ctx, ra);
|
|
gen_helper_minsb8(vc, va, vb);
|
|
break;
|
|
case 0x39:
|
|
/* MINSW4 */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_MVI);
|
|
va = load_gpr(ctx, ra);
|
|
gen_helper_minsw4(vc, va, vb);
|
|
break;
|
|
case 0x3A:
|
|
/* MINUB8 */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_MVI);
|
|
va = load_gpr(ctx, ra);
|
|
gen_helper_minub8(vc, va, vb);
|
|
break;
|
|
case 0x3B:
|
|
/* MINUW4 */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_MVI);
|
|
va = load_gpr(ctx, ra);
|
|
gen_helper_minuw4(vc, va, vb);
|
|
break;
|
|
case 0x3C:
|
|
/* MAXUB8 */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_MVI);
|
|
va = load_gpr(ctx, ra);
|
|
gen_helper_maxub8(vc, va, vb);
|
|
break;
|
|
case 0x3D:
|
|
/* MAXUW4 */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_MVI);
|
|
va = load_gpr(ctx, ra);
|
|
gen_helper_maxuw4(vc, va, vb);
|
|
break;
|
|
case 0x3E:
|
|
/* MAXSB8 */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_MVI);
|
|
va = load_gpr(ctx, ra);
|
|
gen_helper_maxsb8(vc, va, vb);
|
|
break;
|
|
case 0x3F:
|
|
/* MAXSW4 */
|
|
REQUIRE_TB_FLAG(TB_FLAGS_AMASK_MVI);
|
|
va = load_gpr(ctx, ra);
|
|
gen_helper_maxsw4(vc, va, vb);
|
|
break;
|
|
default:
|
|
goto invalid_opc;
|
|
}
|
|
break;
|
|
|
|
case 0x1D:
|
|
/* HW_MTPR (PALcode) */
|
|
#ifndef CONFIG_USER_ONLY
|
|
REQUIRE_TB_FLAG(TB_FLAGS_PAL_MODE);
|
|
vb = load_gpr(ctx, rb);
|
|
ret = gen_mtpr(ctx, vb, insn & 0xffff);
|
|
break;
|
|
#else
|
|
goto invalid_opc;
|
|
#endif
|
|
|
|
case 0x1E:
|
|
/* HW_RET (PALcode) */
|
|
#ifndef CONFIG_USER_ONLY
|
|
REQUIRE_TB_FLAG(TB_FLAGS_PAL_MODE);
|
|
if (rb == 31) {
|
|
/* Pre-EV6 CPUs interpreted this as HW_REI, loading the return
|
|
address from EXC_ADDR. This turns out to be useful for our
|
|
emulation PALcode, so continue to accept it. */
|
|
ctx->lit = vb = tcg_temp_new();
|
|
tcg_gen_ld_i64(vb, cpu_env, offsetof(CPUAlphaState, exc_addr));
|
|
} else {
|
|
vb = load_gpr(ctx, rb);
|
|
}
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_movi_i64(tmp, 0);
|
|
tcg_gen_st8_i64(tmp, cpu_env, offsetof(CPUAlphaState, intr_flag));
|
|
tcg_gen_movi_i64(cpu_lock_addr, -1);
|
|
tcg_gen_andi_i64(tmp, vb, 1);
|
|
tcg_gen_st8_i64(tmp, cpu_env, offsetof(CPUAlphaState, pal_mode));
|
|
tcg_gen_andi_i64(cpu_pc, vb, ~3);
|
|
ret = EXIT_PC_UPDATED;
|
|
break;
|
|
#else
|
|
goto invalid_opc;
|
|
#endif
|
|
|
|
case 0x1F:
|
|
/* HW_ST (PALcode) */
|
|
#ifndef CONFIG_USER_ONLY
|
|
REQUIRE_TB_FLAG(TB_FLAGS_PAL_MODE);
|
|
{
|
|
switch ((insn >> 12) & 0xF) {
|
|
case 0x0:
|
|
/* Longword physical access */
|
|
va = load_gpr(ctx, ra);
|
|
vb = load_gpr(ctx, rb);
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_addi_i64(tmp, vb, disp12);
|
|
tcg_gen_qemu_st_i64(va, tmp, MMU_PHYS_IDX, MO_LESL);
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x1:
|
|
/* Quadword physical access */
|
|
va = load_gpr(ctx, ra);
|
|
vb = load_gpr(ctx, rb);
|
|
tmp = tcg_temp_new();
|
|
tcg_gen_addi_i64(tmp, vb, disp12);
|
|
tcg_gen_qemu_st_i64(va, tmp, MMU_PHYS_IDX, MO_LEQ);
|
|
tcg_temp_free(tmp);
|
|
break;
|
|
case 0x2:
|
|
/* Longword physical access with lock */
|
|
ret = gen_store_conditional(ctx, ra, rb, disp12,
|
|
MMU_PHYS_IDX, MO_LESL);
|
|
break;
|
|
case 0x3:
|
|
/* Quadword physical access with lock */
|
|
ret = gen_store_conditional(ctx, ra, rb, disp12,
|
|
MMU_PHYS_IDX, MO_LEQ);
|
|
break;
|
|
case 0x4:
|
|
/* Longword virtual access */
|
|
goto invalid_opc;
|
|
case 0x5:
|
|
/* Quadword virtual access */
|
|
goto invalid_opc;
|
|
case 0x6:
|
|
/* Invalid */
|
|
goto invalid_opc;
|
|
case 0x7:
|
|
/* Invalid */
|
|
goto invalid_opc;
|
|
case 0x8:
|
|
/* Invalid */
|
|
goto invalid_opc;
|
|
case 0x9:
|
|
/* Invalid */
|
|
goto invalid_opc;
|
|
case 0xA:
|
|
/* Invalid */
|
|
goto invalid_opc;
|
|
case 0xB:
|
|
/* Invalid */
|
|
goto invalid_opc;
|
|
case 0xC:
|
|
/* Longword virtual access with alternate access mode */
|
|
goto invalid_opc;
|
|
case 0xD:
|
|
/* Quadword virtual access with alternate access mode */
|
|
goto invalid_opc;
|
|
case 0xE:
|
|
/* Invalid */
|
|
goto invalid_opc;
|
|
case 0xF:
|
|
/* Invalid */
|
|
goto invalid_opc;
|
|
}
|
|
break;
|
|
}
|
|
#else
|
|
goto invalid_opc;
|
|
#endif
|
|
case 0x20:
|
|
/* LDF */
|
|
gen_load_mem(ctx, &gen_qemu_ldf, ra, rb, disp16, 1, 0);
|
|
break;
|
|
case 0x21:
|
|
/* LDG */
|
|
gen_load_mem(ctx, &gen_qemu_ldg, ra, rb, disp16, 1, 0);
|
|
break;
|
|
case 0x22:
|
|
/* LDS */
|
|
gen_load_mem(ctx, &gen_qemu_lds, ra, rb, disp16, 1, 0);
|
|
break;
|
|
case 0x23:
|
|
/* LDT */
|
|
gen_load_mem(ctx, &tcg_gen_qemu_ld64, ra, rb, disp16, 1, 0);
|
|
break;
|
|
case 0x24:
|
|
/* STF */
|
|
gen_store_mem(ctx, &gen_qemu_stf, ra, rb, disp16, 1, 0);
|
|
break;
|
|
case 0x25:
|
|
/* STG */
|
|
gen_store_mem(ctx, &gen_qemu_stg, ra, rb, disp16, 1, 0);
|
|
break;
|
|
case 0x26:
|
|
/* STS */
|
|
gen_store_mem(ctx, &gen_qemu_sts, ra, rb, disp16, 1, 0);
|
|
break;
|
|
case 0x27:
|
|
/* STT */
|
|
gen_store_mem(ctx, &tcg_gen_qemu_st64, ra, rb, disp16, 1, 0);
|
|
break;
|
|
case 0x28:
|
|
/* LDL */
|
|
gen_load_mem(ctx, &tcg_gen_qemu_ld32s, ra, rb, disp16, 0, 0);
|
|
break;
|
|
case 0x29:
|
|
/* LDQ */
|
|
gen_load_mem(ctx, &tcg_gen_qemu_ld64, ra, rb, disp16, 0, 0);
|
|
break;
|
|
case 0x2A:
|
|
/* LDL_L */
|
|
gen_load_mem(ctx, &gen_qemu_ldl_l, ra, rb, disp16, 0, 0);
|
|
break;
|
|
case 0x2B:
|
|
/* LDQ_L */
|
|
gen_load_mem(ctx, &gen_qemu_ldq_l, ra, rb, disp16, 0, 0);
|
|
break;
|
|
case 0x2C:
|
|
/* STL */
|
|
gen_store_mem(ctx, &tcg_gen_qemu_st32, ra, rb, disp16, 0, 0);
|
|
break;
|
|
case 0x2D:
|
|
/* STQ */
|
|
gen_store_mem(ctx, &tcg_gen_qemu_st64, ra, rb, disp16, 0, 0);
|
|
break;
|
|
case 0x2E:
|
|
/* STL_C */
|
|
ret = gen_store_conditional(ctx, ra, rb, disp16,
|
|
ctx->mem_idx, MO_LESL);
|
|
break;
|
|
case 0x2F:
|
|
/* STQ_C */
|
|
ret = gen_store_conditional(ctx, ra, rb, disp16,
|
|
ctx->mem_idx, MO_LEQ);
|
|
break;
|
|
case 0x30:
|
|
/* BR */
|
|
ret = gen_bdirect(ctx, ra, disp21);
|
|
break;
|
|
case 0x31: /* FBEQ */
|
|
ret = gen_fbcond(ctx, TCG_COND_EQ, ra, disp21);
|
|
break;
|
|
case 0x32: /* FBLT */
|
|
ret = gen_fbcond(ctx, TCG_COND_LT, ra, disp21);
|
|
break;
|
|
case 0x33: /* FBLE */
|
|
ret = gen_fbcond(ctx, TCG_COND_LE, ra, disp21);
|
|
break;
|
|
case 0x34:
|
|
/* BSR */
|
|
ret = gen_bdirect(ctx, ra, disp21);
|
|
break;
|
|
case 0x35: /* FBNE */
|
|
ret = gen_fbcond(ctx, TCG_COND_NE, ra, disp21);
|
|
break;
|
|
case 0x36: /* FBGE */
|
|
ret = gen_fbcond(ctx, TCG_COND_GE, ra, disp21);
|
|
break;
|
|
case 0x37: /* FBGT */
|
|
ret = gen_fbcond(ctx, TCG_COND_GT, ra, disp21);
|
|
break;
|
|
case 0x38:
|
|
/* BLBC */
|
|
ret = gen_bcond(ctx, TCG_COND_EQ, ra, disp21, 1);
|
|
break;
|
|
case 0x39:
|
|
/* BEQ */
|
|
ret = gen_bcond(ctx, TCG_COND_EQ, ra, disp21, 0);
|
|
break;
|
|
case 0x3A:
|
|
/* BLT */
|
|
ret = gen_bcond(ctx, TCG_COND_LT, ra, disp21, 0);
|
|
break;
|
|
case 0x3B:
|
|
/* BLE */
|
|
ret = gen_bcond(ctx, TCG_COND_LE, ra, disp21, 0);
|
|
break;
|
|
case 0x3C:
|
|
/* BLBS */
|
|
ret = gen_bcond(ctx, TCG_COND_NE, ra, disp21, 1);
|
|
break;
|
|
case 0x3D:
|
|
/* BNE */
|
|
ret = gen_bcond(ctx, TCG_COND_NE, ra, disp21, 0);
|
|
break;
|
|
case 0x3E:
|
|
/* BGE */
|
|
ret = gen_bcond(ctx, TCG_COND_GE, ra, disp21, 0);
|
|
break;
|
|
case 0x3F:
|
|
/* BGT */
|
|
ret = gen_bcond(ctx, TCG_COND_GT, ra, disp21, 0);
|
|
break;
|
|
invalid_opc:
|
|
ret = gen_invalid(ctx);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void gen_intermediate_code(CPUAlphaState *env, struct TranslationBlock *tb)
|
|
{
|
|
AlphaCPU *cpu = alpha_env_get_cpu(env);
|
|
CPUState *cs = CPU(cpu);
|
|
DisasContext ctx, *ctxp = &ctx;
|
|
target_ulong pc_start;
|
|
target_ulong pc_mask;
|
|
uint32_t insn;
|
|
ExitStatus ret;
|
|
int num_insns;
|
|
int max_insns;
|
|
|
|
pc_start = tb->pc;
|
|
|
|
ctx.tb = tb;
|
|
ctx.pc = pc_start;
|
|
ctx.mem_idx = cpu_mmu_index(env, false);
|
|
ctx.implver = env->implver;
|
|
ctx.singlestep_enabled = cs->singlestep_enabled;
|
|
|
|
#ifdef CONFIG_USER_ONLY
|
|
ctx.ir = cpu_std_ir;
|
|
#else
|
|
ctx.palbr = env->palbr;
|
|
ctx.ir = (tb->flags & TB_FLAGS_PAL_MODE ? cpu_pal_ir : cpu_std_ir);
|
|
#endif
|
|
|
|
/* ??? Every TB begins with unset rounding mode, to be initialized on
|
|
the first fp insn of the TB. Alternately we could define a proper
|
|
default for every TB (e.g. QUAL_RM_N or QUAL_RM_D) and make sure
|
|
to reset the FP_STATUS to that default at the end of any TB that
|
|
changes the default. We could even (gasp) dynamiclly figure out
|
|
what default would be most efficient given the running program. */
|
|
ctx.tb_rm = -1;
|
|
/* Similarly for flush-to-zero. */
|
|
ctx.tb_ftz = -1;
|
|
|
|
TCGV_UNUSED_I64(ctx.zero);
|
|
TCGV_UNUSED_I64(ctx.sink);
|
|
TCGV_UNUSED_I64(ctx.lit);
|
|
|
|
num_insns = 0;
|
|
max_insns = tb->cflags & CF_COUNT_MASK;
|
|
if (max_insns == 0) {
|
|
max_insns = CF_COUNT_MASK;
|
|
}
|
|
if (max_insns > TCG_MAX_INSNS) {
|
|
max_insns = TCG_MAX_INSNS;
|
|
}
|
|
|
|
if (in_superpage(&ctx, pc_start)) {
|
|
pc_mask = (1ULL << 41) - 1;
|
|
} else {
|
|
pc_mask = ~TARGET_PAGE_MASK;
|
|
}
|
|
|
|
gen_tb_start(tb);
|
|
do {
|
|
tcg_gen_insn_start(ctx.pc);
|
|
num_insns++;
|
|
|
|
if (unlikely(cpu_breakpoint_test(cs, ctx.pc, BP_ANY))) {
|
|
ret = gen_excp(&ctx, EXCP_DEBUG, 0);
|
|
/* The address covered by the breakpoint must be included in
|
|
[tb->pc, tb->pc + tb->size) in order to for it to be
|
|
properly cleared -- thus we increment the PC here so that
|
|
the logic setting tb->size below does the right thing. */
|
|
ctx.pc += 4;
|
|
break;
|
|
}
|
|
if (num_insns == max_insns && (tb->cflags & CF_LAST_IO)) {
|
|
gen_io_start();
|
|
}
|
|
insn = cpu_ldl_code(env, ctx.pc);
|
|
|
|
ctx.pc += 4;
|
|
ret = translate_one(ctxp, insn);
|
|
free_context_temps(ctxp);
|
|
|
|
/* If we reach a page boundary, are single stepping,
|
|
or exhaust instruction count, stop generation. */
|
|
if (ret == NO_EXIT
|
|
&& ((ctx.pc & pc_mask) == 0
|
|
|| tcg_op_buf_full()
|
|
|| num_insns >= max_insns
|
|
|| singlestep
|
|
|| ctx.singlestep_enabled)) {
|
|
ret = EXIT_PC_STALE;
|
|
}
|
|
} while (ret == NO_EXIT);
|
|
|
|
if (tb->cflags & CF_LAST_IO) {
|
|
gen_io_end();
|
|
}
|
|
|
|
switch (ret) {
|
|
case EXIT_GOTO_TB:
|
|
case EXIT_NORETURN:
|
|
break;
|
|
case EXIT_PC_STALE:
|
|
tcg_gen_movi_i64(cpu_pc, ctx.pc);
|
|
/* FALLTHRU */
|
|
case EXIT_PC_UPDATED:
|
|
if (ctx.singlestep_enabled) {
|
|
gen_excp_1(EXCP_DEBUG, 0);
|
|
} else {
|
|
tcg_gen_exit_tb(0);
|
|
}
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
|
|
gen_tb_end(tb, num_insns);
|
|
|
|
tb->size = ctx.pc - pc_start;
|
|
tb->icount = num_insns;
|
|
|
|
#ifdef DEBUG_DISAS
|
|
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
|
|
&& qemu_log_in_addr_range(pc_start)) {
|
|
qemu_log_lock();
|
|
qemu_log("IN: %s\n", lookup_symbol(pc_start));
|
|
log_target_disas(cs, pc_start, ctx.pc - pc_start, 1);
|
|
qemu_log("\n");
|
|
qemu_log_unlock();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void restore_state_to_opc(CPUAlphaState *env, TranslationBlock *tb,
|
|
target_ulong *data)
|
|
{
|
|
env->pc = data[0];
|
|
}
|