@@ -4611,6 +4611,10 @@ for i in $ARCH $TARGET_BASE_ARCH ; do
arm)
echo "CONFIG_ARM_DIS=y" >> $config_target_mak
echo "CONFIG_ARM_DIS=y" >> config-all-disas.mak
+ if test -n "${cxx}"; then
+ echo "CONFIG_AARCH64_DIS=y" >> $config_target_mak
+ echo "CONFIG_AARCH64_DIS=y" >> config-all-disas.mak
+ fi
;;
cris)
echo "CONFIG_CRIS_DIS=y" >> $config_target_mak
@@ -190,7 +190,7 @@ static int print_insn_od_target(bfd_vma pc, disassemble_info *info)
/* Disassemble this for me please... (debugging). 'flags' has the following
values:
i386 - 1 means 16 bit code, 2 means 64 bit code
- arm - bit 0 = thumb, bit 1 = reverse endian
+ arm - bit 0 = thumb, bit 1 = reverse endian, bit 2 = AArch64
ppc - nonzero means little endian
other targets - unused
*/
@@ -225,7 +225,15 @@ void target_disas(FILE *out, CPUArchState *env, target_ulong code,
}
print_insn = print_insn_i386;
#elif defined(TARGET_ARM)
- if (flags & 1) {
+ if (flags & 4) {
+ /* We might not be compiled with the AArch64 disassembler
+ * because it needs a C++ compiler; in that case we will
+ * fall through to the default print_insn_od case.
+ */
+#if defined(TARGET_AARCH64) && defined(CONFIG_AARCH64_DIS)
+ print_insn = print_insn_aarch64;
+#endif
+ } else if (flags & 1) {
print_insn = print_insn_thumb1;
} else {
print_insn = print_insn_arm;
@@ -356,6 +364,8 @@ void disas(FILE *out, void *code, unsigned long size)
#elif defined(_ARCH_PPC)
s.info.disassembler_options = (char *)"any";
print_insn = print_insn_ppc;
+#elif defined(__aarch64__) && defined(CONFIG_AARCH64_DIS)
+ print_insn = print_insn_aarch64;
#elif defined(__alpha__)
print_insn = print_insn_alpha;
#elif defined(__sparc__)
@@ -1,3 +1,10 @@
+ifeq ($(CONFIG_AARCH64_DIS),y)
+libvixldir = $(SRC_PATH)/disas/libvixl/src
+QEMU_CFLAGS += -I$(libvixldir) -Wno-undef
+common-obj-$(CONFIG_AARCH64_DIS) += libvixl/
+common-obj-$(CONFIG_AARCH64_DIS) += aarch64.o aarch64-cxx.o
+endif
+
common-obj-$(CONFIG_ALPHA_DIS) += alpha.o
common-obj-$(CONFIG_ARM_DIS) += arm.o
common-obj-$(CONFIG_CRIS_DIS) += cris.o
new file mode 100644
@@ -0,0 +1,80 @@
+/*
+ * AArch64 disassembly output wrapper to libvixl - C++ part
+ * Copyright (c) 2013 Linaro Limited
+ * Written by Claudio Fontana
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* This is the C++ half of the interface between QEMU and libvixl;
+ * it's a separate file from aarch64.c so that we don't have to make
+ * the bfd.h header palatable to a C++ compiler.
+ */
+
+#include "a64/simulator-a64.h"
+#include "a64/macro-assembler-a64.h"
+
+extern "C" {
+ int vixl_decode_insn(FILE *stream, uint8_t *bytes);
+}
+
+using namespace vixl;
+
+static Decoder *vixl_decoder = NULL;
+static Disassembler *vixl_disasm = NULL;
+
+/* We don't use libvixl's PrintDisassembler because its output
+ * is a little unhelpful (trailing newlines, for example).
+ * Instead we use our own very similar variant so we have
+ * control over the format.
+ */
+class QEMUDisassembler : public Disassembler {
+public:
+ explicit QEMUDisassembler(FILE *stream) : stream_(stream) { }
+ ~QEMUDisassembler() { }
+
+protected:
+ void ProcessOutput(Instruction *instr) {
+ fprintf(stream_, "%08" PRIx32 " %s",
+ instr->InstructionBits(), GetOutput());
+ }
+
+private:
+ FILE *stream_;
+};
+
+static int vixl_is_initialized(void)
+{
+ return vixl_decoder != NULL;
+}
+
+static void vixl_init(FILE *f) {
+ vixl_decoder = new Decoder();
+ vixl_disasm = new QEMUDisassembler(f);
+ vixl_decoder->AppendVisitor(vixl_disasm);
+}
+
+/* This is our only entry point from QEMU's C code */
+int vixl_decode_insn(FILE *stream, uint8_t *bytes)
+{
+ Instr instr;
+
+ if (!vixl_is_initialized()) {
+ vixl_init(stream);
+ }
+
+ instr = bytes[0] | bytes[1] << 8 | bytes[2] << 16 | bytes[3] << 24;
+ vixl_decoder->Decode(reinterpret_cast<Instruction*>(&instr));
+ return 1;
+}
new file mode 100644
@@ -0,0 +1,39 @@
+/*
+ * AArch64 disassembly output wrapper to libvixl - C part
+ * Copyright (c) 2013 Linaro Limited
+ * Written by Claudio Fontana
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "disas/bfd.h"
+#define INSN_SIZE 4
+
+extern int vixl_decode_insn(FILE *stream, uint8_t *);
+
+/* Disassemble Aarch64 bytecode. */
+int print_insn_aarch64(uint64_t addr, disassemble_info *info)
+{
+ uint8_t bytes[INSN_SIZE];
+ int status;
+
+ status = info->read_memory_func(addr, bytes, INSN_SIZE, info);
+ if (status != 0) {
+ info->memory_error_func(status, addr, info);
+ return -1;
+ }
+
+ vixl_decode_insn(info->stream, bytes);
+ return INSN_SIZE;
+}
new file mode 100644
@@ -0,0 +1,6 @@
+libvixl_OBJS = src/utils.o \
+ src/a64/instructions-a64.o \
+ src/a64/decoder-a64.o \
+ src/a64/disasm-a64.o
+
+common-obj-$(CONFIG_AARCH64_DIS) += $(libvixl_OBJS)
@@ -379,6 +379,7 @@ int print_insn_h8300 (bfd_vma, disassemble_info*);
int print_insn_h8300h (bfd_vma, disassemble_info*);
int print_insn_h8300s (bfd_vma, disassemble_info*);
int print_insn_h8500 (bfd_vma, disassemble_info*);
+int print_insn_aarch64 (bfd_vma, disassemble_info*);
int print_insn_alpha (bfd_vma, disassemble_info*);
disassembler_ftype arc_get_disassembler (int, int);
int print_insn_arm (bfd_vma, disassemble_info*);
@@ -4029,7 +4029,7 @@ done_generating:
qemu_log("----------------\n");
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(env, pc_start, dc->pc - pc_start,
- dc->thumb | (dc->bswap_code << 1));
+ 4 | (dc->bswap_code << 1));
qemu_log("\n");
}
#endif