1 files changed, 138 insertions, 0 deletions
diff --git a/target/i386/tcg/misc_helper.c b/target/i386/tcg/misc_helper.c
new file mode 100644
index 000000000..5769db5ac
--- /dev/null
+++ b/target/i386/tcg/misc_helper.c
@@ -0,0 +1,138 @@
+/*
+ *  x86 misc helpers
+ *
+ *  Copyright (c) 2003 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "exec/helper-proto.h"
+#include "exec/exec-all.h"
+#include "helper-tcg.h"
+
+/*
+ * NOTE: the translator must set DisasContext.cc_op to CC_OP_EFLAGS
+ * after generating a call to a helper that uses this.
+ */
+void cpu_load_eflags(CPUX86State *env, int eflags, int update_mask)
+{
+    CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
+    CC_OP = CC_OP_EFLAGS;
+    env->df = 1 - (2 * ((eflags >> 10) & 1));
+    env->eflags = (env->eflags & ~update_mask) |
+        (eflags & update_mask) | 0x2;
+}
+
+void helper_into(CPUX86State *env, int next_eip_addend)
+{
+    int eflags;
+
+    eflags = cpu_cc_compute_all(env, CC_OP);
+    if (eflags & CC_O) {
+        raise_interrupt(env, EXCP04_INTO, 1, 0, next_eip_addend);
+    }
+}
+
+void helper_cpuid(CPUX86State *env)
+{
+    uint32_t eax, ebx, ecx, edx;
+
+    cpu_svm_check_intercept_param(env, SVM_EXIT_CPUID, 0, GETPC());
+
+    cpu_x86_cpuid(env, (uint32_t)env->regs[R_EAX], (uint32_t)env->regs[R_ECX],
+                  &eax, &ebx, &ecx, &edx);
+    env->regs[R_EAX] = eax;
+    env->regs[R_EBX] = ebx;
+    env->regs[R_ECX] = ecx;
+    env->regs[R_EDX] = edx;
+}
+
+void helper_rdtsc(CPUX86State *env)
+{
+    uint64_t val;
+
+    if ((env->cr[4] & CR4_TSD_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) {
+        raise_exception_ra(env, EXCP0D_GPF, GETPC());
+    }
+    cpu_svm_check_intercept_param(env, SVM_EXIT_RDTSC, 0, GETPC());
+
+    val = cpu_get_tsc(env) + env->tsc_offset;
+    env->regs[R_EAX] = (uint32_t)(val);
+    env->regs[R_EDX] = (uint32_t)(val >> 32);
+}
+
+void helper_rdtscp(CPUX86State *env)
+{
+    helper_rdtsc(env);
+    env->regs[R_ECX] = (uint32_t)(env->tsc_aux);
+}
+
+void QEMU_NORETURN helper_rdpmc(CPUX86State *env)
+{
+    if (((env->cr[4] & CR4_PCE_MASK) == 0 ) &&
+        ((env->hflags & HF_CPL_MASK) != 0)) {
+        raise_exception_ra(env, EXCP0D_GPF, GETPC());
+    }
+    cpu_svm_check_intercept_param(env, SVM_EXIT_RDPMC, 0, GETPC());
+
+    /* currently unimplemented */
+    qemu_log_mask(LOG_UNIMP, "x86: unimplemented rdpmc\n");
+    raise_exception_err(env, EXCP06_ILLOP, 0);
+}
+
+void QEMU_NORETURN do_pause(CPUX86State *env)
+{
+    CPUState *cs = env_cpu(env);
+
+    /* Just let another CPU run.  */
+    cs->exception_index = EXCP_INTERRUPT;
+    cpu_loop_exit(cs);
+}
+
+void QEMU_NORETURN helper_pause(CPUX86State *env, int next_eip_addend)
+{
+    cpu_svm_check_intercept_param(env, SVM_EXIT_PAUSE, 0, GETPC());
+    env->eip += next_eip_addend;
+
+    do_pause(env);
+}
+
+uint64_t helper_rdpkru(CPUX86State *env, uint32_t ecx)
+{
+    if ((env->cr[4] & CR4_PKE_MASK) == 0) {
+        raise_exception_err_ra(env, EXCP06_ILLOP, 0, GETPC());
+    }
+    if (ecx != 0) {
+        raise_exception_err_ra(env, EXCP0D_GPF, 0, GETPC());
+    }
+
+    return env->pkru;
+}
+
+void helper_wrpkru(CPUX86State *env, uint32_t ecx, uint64_t val)
+{
+    CPUState *cs = env_cpu(env);
+
+    if ((env->cr[4] & CR4_PKE_MASK) == 0) {
+        raise_exception_err_ra(env, EXCP06_ILLOP, 0, GETPC());
+    }
+    if (ecx != 0 || (val & 0xFFFFFFFF00000000ull)) {
+        raise_exception_err_ra(env, EXCP0D_GPF, 0, GETPC());
+    }
+
+    env->pkru = val;
+    tlb_flush(cs);
+}