i386: move TCG cpu class initialization to tcg/

to do this, we need to take code out of cpu.c and helper.c,
and also move some prototypes from cpu.h, for code that is
needed in tcg/xxx_helper.c, and which in turn is part of the
callbacks registered by the class initialization.

Therefore, do some shuffling of the parts of cpu.h that
are only relevant for tcg/, and put them in tcg/helper-tcg.h

For FT0 and similar macros, put them in tcg/fpu-helper.c
since they are used only there.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201212155530.23098-8-cfontana@suse.de>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

1 files changed, 106 insertions, 0 deletions

diff --git a/target/i386/tcg/helper-tcg.h b/target/i386/tcg/helper-tcg.h
new file mode 100644
index 0000000..148edf4
--- /dev/null
+++ b/target/i386/tcg/helper-tcg.h
@@ -0,0 +1,106 @@
+/*
+ * TCG specific prototypes for 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 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/>.
+ */
+
+#ifndef I386_HELPER_TCG_H
+#define I386_HELPER_TCG_H
+
+#include "exec/exec-all.h"
+
+/* Maximum instruction code size */
+#define TARGET_MAX_INSN_SIZE 16
+
+/*
+ * XXX: This value should match the one returned by CPUID
+ * and in exec.c
+ */
+# if defined(TARGET_X86_64)
+# define TCG_PHYS_ADDR_BITS 40
+# else
+# define TCG_PHYS_ADDR_BITS 36
+# endif
+
+#define PHYS_ADDR_MASK MAKE_64BIT_MASK(0, TCG_PHYS_ADDR_BITS)
+
+/**
+ * x86_cpu_do_interrupt:
+ * @cpu: vCPU the interrupt is to be handled by.
+ */
+void x86_cpu_do_interrupt(CPUState *cpu);
+bool x86_cpu_exec_interrupt(CPUState *cpu, int int_req);
+
+/* helper.c */
+bool x86_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
+                      MMUAccessType access_type, int mmu_idx,
+                      bool probe, uintptr_t retaddr);
+
+void breakpoint_handler(CPUState *cs);
+
+/* n must be a constant to be efficient */
+static inline target_long lshift(target_long x, int n)
+{
+    if (n >= 0) {
+        return x << n;
+    } else {
+        return x >> (-n);
+    }
+}
+
+/* translate.c */
+void tcg_x86_init(void);
+
+/* excp_helper.c */
+void QEMU_NORETURN raise_exception(CPUX86State *env, int exception_index);
+void QEMU_NORETURN raise_exception_ra(CPUX86State *env, int exception_index,
+                                      uintptr_t retaddr);
+void QEMU_NORETURN raise_exception_err(CPUX86State *env, int exception_index,
+                                       int error_code);
+void QEMU_NORETURN raise_exception_err_ra(CPUX86State *env, int exception_index,
+                                          int error_code, uintptr_t retaddr);
+void QEMU_NORETURN raise_interrupt(CPUX86State *nenv, int intno, int is_int,
+                                   int error_code, int next_eip_addend);
+
+/* cc_helper.c */
+extern const uint8_t parity_table[256];
+
+/*
+ * NOTE: the translator must set DisasContext.cc_op to CC_OP_EFLAGS
+ * after generating a call to a helper that uses this.
+ */
+static inline 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;
+}
+
+/* svm_helper.c */
+void QEMU_NORETURN cpu_vmexit(CPUX86State *nenv, uint32_t exit_code,
+                              uint64_t exit_info_1, uintptr_t retaddr);
+void do_vmexit(CPUX86State *env, uint32_t exit_code, uint64_t exit_info_1);
+
+/* seg_helper.c */
+void do_interrupt_x86_hardirq(CPUX86State *env, int intno, int is_hw);
+
+/* smm_helper.c */
+void do_smm_enter(X86CPU *cpu);
+
+#endif /* I386_HELPER_TCG_H */