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[Qemu-devel] [PATCH v2 5/6] tcg: Add tci disassembler
From: |
Stefan Weil |
Subject: |
[Qemu-devel] [PATCH v2 5/6] tcg: Add tci disassembler |
Date: |
Thu, 20 Oct 2011 23:11:24 +0200 |
Signed-off-by: Stefan Weil <address@hidden>
---
dis-asm.h | 1 +
disas.c | 4 +++-
tci-dis.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 63 insertions(+), 1 deletions(-)
create mode 100644 tci-dis.c
diff --git a/dis-asm.h b/dis-asm.h
index 5b07d7f..4f15fad 100644
--- a/dis-asm.h
+++ b/dis-asm.h
@@ -365,6 +365,7 @@ typedef struct disassemble_info {
target address. Return number of bytes processed. */
typedef int (*disassembler_ftype) (bfd_vma, disassemble_info *);
+int print_insn_tci(bfd_vma, disassemble_info*);
int print_insn_big_mips (bfd_vma, disassemble_info*);
int print_insn_little_mips (bfd_vma, disassemble_info*);
int print_insn_i386 (bfd_vma, disassemble_info*);
diff --git a/disas.c b/disas.c
index 611b30b..3b1fd97 100644
--- a/disas.c
+++ b/disas.c
@@ -273,7 +273,9 @@ void disas(FILE *out, void *code, unsigned long size)
#else
disasm_info.endian = BFD_ENDIAN_LITTLE;
#endif
-#if defined(__i386__)
+#if defined(CONFIG_TCG_INTERPRETER)
+ print_insn = print_insn_tci;
+#elif defined(__i386__)
disasm_info.mach = bfd_mach_i386_i386;
print_insn = print_insn_i386;
#elif defined(__x86_64__)
diff --git a/tci-dis.c b/tci-dis.c
new file mode 100644
index 0000000..10c411b
--- /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;
+}
--
1.7.2.5
- [Qemu-devel] [PATCH v2 0/6] tcg/interpreter: Add TCG + interpreter for bytecode, Stefan Weil, 2011/10/20
- [Qemu-devel] [PATCH v2 1/6] tcg: TCG targets may define tcg_qemu_tb_exec, Stefan Weil, 2011/10/20
- [Qemu-devel] [PATCH v2 2/6] tcg: Make ARRAY_SIZE(tcg_op_defs) globally available, Stefan Weil, 2011/10/20
- [Qemu-devel] [PATCH v2 3/6] tcg: Add bytecode generator for tcg interpreter, Stefan Weil, 2011/10/20
- [Qemu-devel] [PATCH v2 4/6] tcg: Add interpreter for bytecode, Stefan Weil, 2011/10/20
- [Qemu-devel] [PATCH v2 5/6] tcg: Add tci disassembler,
Stefan Weil <=
- [Qemu-devel] [PATCH v2 6/6] tcg: Add tcg interpreter to configure / make, Stefan Weil, 2011/10/20