commit 19dc85dba23c0db1ca932c62e453c37e00761628
author Richard Henderson <rth@twiddle.net> Thu Jul 02 14:53:40 2015 +0100
committer Richard Henderson <rth@twiddle.net> Sat Feb 13 07:59:59 2016 +1100
tree 9ac16b50d5d1b11c9533c6a85e336c1274d1ba38
parent 121f3157887f92268a3d6169e2d4601f9292020b

target-i386: Add XSAVE extension

This includes XSAVE, XRSTOR, XGETBV, XSETBV, which are all related,
as well as the associate cpuid bits.

Signed-off-by: Richard Henderson <rth@twiddle.net>

target-i386/translate.c

diff --git a/target-i386/translate.c b/target-i386/translate.c
index 6477578..7571e85 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -7079,6 +7079,36 @@
             gen_op_st_v(s, CODE64(s) + MO_32, cpu_T0, cpu_A0);
             break;
 
+        case 0xd0: /* xgetbv */
+            if ((s->cpuid_ext_features & CPUID_EXT_XSAVE) == 0
+                || (s->prefix & (PREFIX_LOCK | PREFIX_DATA
+                                 | PREFIX_REPZ | PREFIX_REPNZ))) {
+                goto illegal_op;
+            }
+            tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_regs[R_ECX]);
+            gen_helper_xgetbv(cpu_tmp1_i64, cpu_env, cpu_tmp2_i32);
+            tcg_gen_extr_i64_tl(cpu_regs[R_EAX], cpu_regs[R_EDX], cpu_tmp1_i64);
+            break;
+
+        case 0xd1: /* xsetbv */
+            if ((s->cpuid_ext_features & CPUID_EXT_XSAVE) == 0
+                || (s->prefix & (PREFIX_LOCK | PREFIX_DATA
+                                 | PREFIX_REPZ | PREFIX_REPNZ))) {
+                goto illegal_op;
+            }
+            if (s->cpl != 0) {
+                gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
+                break;
+            }
+            tcg_gen_concat_tl_i64(cpu_tmp1_i64, cpu_regs[R_EAX],
+                                  cpu_regs[R_EDX]);
+            tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_regs[R_ECX]);
+            gen_helper_xsetbv(cpu_env, cpu_tmp2_i32, cpu_tmp1_i64);
+            /* End TB because translation flags may change.  */
+            gen_jmp_im(s->pc - pc_start);
+            gen_eob(s);
+            break;
+
         case 0xd8: /* VMRUN */
             if (!(s->flags & HF_SVME_MASK) || !s->pe) {
                 goto illegal_op;
@@ -7580,6 +7610,30 @@
             gen_op_st_v(s, MO_32, cpu_T0, cpu_A0);
             break;
 
+        CASE_MEM_OP(4): /* xsave */
+            if ((s->cpuid_ext_features & CPUID_EXT_XSAVE) == 0
+                || (prefixes & (PREFIX_LOCK | PREFIX_DATA
+                                | PREFIX_REPZ | PREFIX_REPNZ))) {
+                goto illegal_op;
+            }
+            gen_lea_modrm(env, s, modrm);
+            tcg_gen_concat_tl_i64(cpu_tmp1_i64, cpu_regs[R_EAX],
+                                  cpu_regs[R_EDX]);
+            gen_helper_xsave(cpu_env, cpu_A0, cpu_tmp1_i64);
+            break;
+
+        CASE_MEM_OP(5): /* xrstor */
+            if ((s->cpuid_ext_features & CPUID_EXT_XSAVE) == 0
+                || (prefixes & (PREFIX_LOCK | PREFIX_DATA
+                                | PREFIX_REPZ | PREFIX_REPNZ))) {
+                goto illegal_op;
+            }
+            gen_lea_modrm(env, s, modrm);
+            tcg_gen_concat_tl_i64(cpu_tmp1_i64, cpu_regs[R_EAX],
+                                  cpu_regs[R_EDX]);
+            gen_helper_xrstor(cpu_env, cpu_A0, cpu_tmp1_i64);
+            break;
+
         CASE_MEM_OP(6): /* clwb */
             if (prefixes & PREFIX_LOCK) {
                 goto illegal_op;