import Unicorn2

samples/sample_ppc.c

@@ -0,0 +1,88 @@
+/* Unicorn Emulator Engine */
+/* By simigo79, 2020 */
+
+/* Sample code to demonstrate how to emulate PPC code */
+
+#include <unicorn/unicorn.h>
+#include <string.h>
+
+
+// code to be emulated
+#define PPC_CODE "\x7F\x46\x1A\x14" //  add       r26, r6, r3
+
+// memory address where emulation starts
+#define ADDRESS 0x10000
+
+
+static void hook_block(uc_engine *uc, uint64_t address, uint32_t size, void *user_data)
+{
+    printf(">>> Tracing basic block at 0x%"PRIx64 ", block size = 0x%x\n", address, size);
+}
+
+static void hook_code(uc_engine *uc, uint64_t address, uint32_t size, void *user_data)
+{
+    printf(">>> Tracing instruction at 0x%"PRIx64 ", instruction size = 0x%x\n", address, size);
+}
+
+static void test_ppc(void)
+{
+    uc_engine *uc;
+    uc_err err;
+    uc_hook trace1, trace2;
+
+    int r3 = 0x1234;     // R3 register
+    int r6 = 0x6789;     // R6 register
+    int r26 = 0x8877;     // R26 register	(result)
+
+    printf("Emulate PPC code\n");
+
+    // Initialize emulator in PPC mode
+    err = uc_open(UC_ARCH_PPC, UC_MODE_PPC32 | UC_MODE_BIG_ENDIAN , &uc);
+    if (err) {
+        printf("Failed on uc_open() with error returned: %u (%s)\n",
+                err, uc_strerror(err));
+        return;
+    }
+
+    // map 2MB memory for this emulation
+    uc_mem_map(uc, ADDRESS, 2 * 1024 * 1024, UC_PROT_ALL);
+
+    // write machine code to be emulated to memory
+    uc_mem_write(uc, ADDRESS, PPC_CODE, sizeof(PPC_CODE) - 1);
+
+    // initialize machine registers
+    uc_reg_write(uc, UC_PPC_REG_3, &r3);
+    uc_reg_write(uc, UC_PPC_REG_6, &r6);
+    uc_reg_write(uc, UC_PPC_REG_26, &r26);
+
+    // tracing all basic blocks with customized callback
+    uc_hook_add(uc, &trace1, UC_HOOK_BLOCK, hook_block, NULL, 1, 0);
+
+    // tracing one instruction at ADDRESS with customized callback
+    uc_hook_add(uc, &trace2, UC_HOOK_CODE, hook_code, NULL, ADDRESS, ADDRESS);
+
+    // emulate machine code in infinite time (last param = 0), or when
+    // finishing all the code.
+    err = uc_emu_start(uc, ADDRESS, ADDRESS + sizeof(PPC_CODE) -1, 0, 0);
+    if (err) {
+        printf("Failed on uc_emu_start() with error returned: %u\n", err);
+        return;
+    }
+
+    // now print out some registers
+    printf(">>> Emulation done. Below is the CPU context\n");
+
+    uc_reg_read(uc, UC_PPC_REG_26, &r26);
+    printf(">>> r26 = 0x%x\n", r26);
+
+    // close engine when done
+    uc_close(uc);
+}
+
+
+int main(int argc, char **argv, char **envp)
+{
+    test_ppc();
+
+    return 0;
+}