sample for arm added

bindings/ruby/sample_arm.rb

@@ -0,0 +1,106 @@
+#!/usr/bin/env ruby
+
+require 'unicorn'
+require 'unicorn/arm_const'
+
+include Unicorn
+
+# code to be emulated
+ARM_CODE   = "\x37\x00\xa0\xe3\x03\x10\x42\xe0" # mov r0, #0x37; sub r1, r2, r3
+THUMB_CODE = "\x83\xb0" # sub    sp, #0xc
+# 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 ARM
+def test_arm()
+    puts("Emulate ARM code")
+    begin
+        # Initialize emulator in ARM mode
+        mu = Uc.new UC_ARCH_ARM, UC_MODE_ARM
+
+        # 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, ARM_CODE)
+
+        # initialize machine registers
+        mu.reg_write(UC_ARM_REG_R0, 0x1234)
+        mu.reg_write(UC_ARM_REG_R2, 0x6789)
+        mu.reg_write(UC_ARM_REG_R3, 0x3333)
+
+        # 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 + ARM_CODE.bytesize)
+
+        # now print out some registers
+        puts(">>> Emulation done. Below is the CPU context")
+
+        r0 = mu.reg_read(UC_ARM_REG_R0)
+        r1 = mu.reg_read(UC_ARM_REG_R1)
+        puts(">>> R0 = 0x%x" % r0)
+        puts(">>> R1 = 0x%x" % r1)
+
+    rescue UcError => e
+        puts("ERROR: %s" % e)
+    end
+end
+
+
+def test_thumb()
+    puts("Emulate THUMB code")
+    begin
+        # Initialize emulator in thumb mode
+        mu = Uc.new UC_ARCH_ARM, UC_MODE_THUMB
+
+        # 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, THUMB_CODE)
+
+        # initialize machine registers
+        mu.reg_write(UC_ARM_REG_SP, 0x1234)
+
+        # 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 + THUMB_CODE.bytesize)
+
+        # now print out some registers
+        puts(">>> Emulation done. Below is the CPU context")
+
+        sp = mu.reg_read(UC_ARM_REG_SP)
+        puts(">>> SP = 0x%x" % sp)
+
+    rescue UcError => e
+        puts("ERROR: %s" % e)
+    end
+end
+
+
+test_arm()
+puts("=" * 20)
+test_thumb()