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authorStefan Weil <sw@weilnetz.de>2011-10-05 20:03:53 +0200
committerStefan Weil <weil@mail.berlios.de>2011-10-31 21:52:17 +0100
commit5826e51917525dac7704ba8f80d624578fdad3c8 (patch)
tree494a6033ce5f56109ce556eefe2e71dd30544d6a /tci-dis.c
parent7657f4bf68c829623074a60b64f7569532137488 (diff)
tcg: Add tci disassembler
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Diffstat (limited to 'tci-dis.c')
-rw-r--r--tci-dis.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/tci-dis.c b/tci-dis.c
new file mode 100644
index 000000000..10c411be8
--- /dev/null
+++ b/tci-dis.c
@@ -0,0 +1,59 @@
+/*
+ * Tiny Code Interpreter for QEMU - disassembler
+ *
+ * Copyright (c) 2011 Stefan Weil
+ *
+ * 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 "dis-asm.h"
+#include "tcg/tcg.h"
+
+/* Disassemble TCI bytecode. */
+int print_insn_tci(bfd_vma addr, disassemble_info *info)
+{
+ int length;
+ uint8_t byte;
+ int status;
+ TCGOpcode op;
+
+ status = info->read_memory_func(addr, &byte, 1, info);
+ if (status != 0) {
+ info->memory_error_func(status, addr, info);
+ return -1;
+ }
+ op = byte;
+
+ addr++;
+ status = info->read_memory_func(addr, &byte, 1, info);
+ if (status != 0) {
+ info->memory_error_func(status, addr, info);
+ return -1;
+ }
+ length = byte;
+
+ if (op >= tcg_op_defs_max) {
+ info->fprintf_func(info->stream, "illegal opcode %d", op);
+ } else {
+ const TCGOpDef *def = &tcg_op_defs[op];
+ int nb_oargs = def->nb_oargs;
+ int nb_iargs = def->nb_iargs;
+ int nb_cargs = def->nb_cargs;
+ /* TODO: Improve disassembler output. */
+ info->fprintf_func(info->stream, "%s\to=%d i=%d c=%d",
+ def->name, nb_oargs, nb_iargs, nb_cargs);
+ }
+
+ return length;
+}