sample for mips added

bindings/ruby/sample_mips.rb

@@ -0,0 +1,104 @@
+#!/usr/bin/env ruby
+# Sample code for MIPS of Unicorn. Nguyen Anh Quynh <aquynh@gmail.com>
+# Ruby sample ported by Sascha Schirra <sashs82@gmail.com>
+require 'unicorn'
+require 'unicorn/mips_const'
+
+include Unicorn
+
+# code to be emulated
+MIPS_CODE_EB = "\x34\x21\x34\x56" # ori $at, $at, 0x3456;
+MIPS_CODE_EL = "\x56\x34\x21\x34" # ori $at, $at, 0x3456;
+
+# memory address where emulation starts
+ADDRESS      = 0x10000
+
+
+# callback for tracing basic blocks
+$hook_block = Proc.new do |uc, address, size, user_data|
+    puts(">>> Tracing basic block at 0x%x, block size = 0x%x" % [address, size])
+end
+
+
+# callback for tracing instructions
+$hook_code = Proc.new do |uc, address, size, user_data|
+    puts(">>> Tracing instruction at 0x%x, instruction size = %u" % [address, size])
+end
+
+# Test MIPS EB
+def test_mips_eb()
+    puts("Emulate MIPS code (big-endian)")
+    begin
+        # Initialize emulator in MIPS32 + EB mode
+        mu = Uc.new UC_ARCH_MIPS, UC_MODE_MIPS32 + UC_MODE_BIG_ENDIAN
+
+        # map 2MB memory for this emulation
+        mu.mem_map(ADDRESS, 2 * 1024 * 1024)
+
+        # write machine code to be emulated to memory
+        mu.mem_write(ADDRESS, MIPS_CODE_EB)
+
+        # initialize machine registers
+        mu.reg_write(UC_MIPS_REG_1, 0x6789)
+
+        # tracing all basic blocks with customized callback
+        mu.hook_add(UC_HOOK_BLOCK, $hook_block)
+
+        # tracing all instructions with customized callback
+        mu.hook_add(UC_HOOK_CODE, $hook_code)
+
+        # emulate machine code in infinite time
+        mu.emu_start(ADDRESS, ADDRESS + MIPS_CODE_EB.bytesize)
+
+        # now puts out some registers
+        puts(">>> Emulation done. Below is the CPU context")
+
+        r1 = mu.reg_read(UC_MIPS_REG_1)
+        puts(">>> r1 = 0x%x" % r1)
+
+    rescue UcError => e
+        puts("ERROR: %s" % e)
+    end
+end
+
+
+# Test MIPS EL
+def test_mips_el()
+    puts("Emulate MIPS code (little-endian)")
+    begin
+        # Initialize emulator in MIPS32 + EL mode
+        mu = Uc.new UC_ARCH_MIPS, UC_MODE_MIPS32 + UC_MODE_LITTLE_ENDIAN
+
+        # map 2MB memory for this emulation
+        mu.mem_map(ADDRESS, 2 * 1024 * 1024)
+
+        # write machine code to be emulated to memory
+        mu.mem_write(ADDRESS, MIPS_CODE_EL)
+
+        # initialize machine registers
+        mu.reg_write(UC_MIPS_REG_1, 0x6789)
+
+        # tracing all basic blocks with customized callback
+        mu.hook_add(UC_HOOK_BLOCK, $hook_block)
+
+        # tracing all instructions with customized callback
+        mu.hook_add(UC_HOOK_CODE, $hook_code)
+
+        # emulate machine code in infinite time
+        mu.emu_start(ADDRESS, ADDRESS + MIPS_CODE_EL.bytesize)
+
+        # now puts out some registers
+        puts(">>> Emulation done. Below is the CPU context")
+
+        r1 = mu.reg_read(UC_MIPS_REG_1)
+        puts(">>> r1 = 0x%x" % r1)
+
+    rescue UcError => e
+        puts("ERROR: %s" % e)
+    end
+end
+
+
+test_mips_eb()
+puts("=" * 20)
+test_mips_el()