Update Java samples to match C samples.

Also add all of the samples as Java tests, referencing the output of the C
samples.

samples/sample_arm64.c

@@ -293,9 +293,94 @@ static void test_arm64_hook_mrs()
     uc_close(uc);
 }
 
+
+#define CHECK(x) do {      \
+    if((x) != UC_ERR_OK) {              \
+        fprintf(stderr, "FAIL at %s:%d: %s\n", __FILE__, __LINE__, #x); \
+        exit(1);            \
+    }                       \
+} while(0)
+
+static void test_arm64_pac(void)
+{
+    uc_engine *uc;
+    uint64_t x1 = 0x0000aaaabbbbccccULL;
+
+    // paciza x1
+    #define ARM64_PAC_CODE "\xe1\x23\xc1\xda"
+
+    printf("Try ARM64 PAC\n");
+
+    // Initialize emulator in ARM mode
+    CHECK(uc_open(UC_ARCH_ARM64, UC_MODE_ARM, &uc));
+    CHECK(uc_ctl_set_cpu_model(uc, UC_CPU_ARM64_MAX));
+    CHECK(uc_mem_map(uc, ADDRESS, 2 * 1024 * 1024, UC_PROT_ALL));
+    CHECK(uc_mem_write(uc, ADDRESS, ARM64_PAC_CODE, sizeof(ARM64_PAC_CODE) - 1));
+    CHECK(uc_reg_write(uc, UC_ARM64_REG_X1, &x1));
+
+    /** Initialize PAC support **/
+    uc_arm64_cp_reg reg;
+
+    // SCR_EL3
+    reg.op0 = 0b11;
+    reg.op1 = 0b110;
+    reg.crn = 0b0001;
+    reg.crm = 0b0001;
+    reg.op2 = 0b000;
+
+    CHECK(uc_reg_read(uc, UC_ARM64_REG_CP_REG, &reg));
+
+    // NS && RW && API
+    reg.val |= (1 | (1<<10) | (1<<17));
+
+    CHECK(uc_reg_write(uc, UC_ARM64_REG_CP_REG, &reg));
+
+    // SCTLR_EL1
+    reg.op0 = 0b11;
+    reg.op1 = 0b000;
+    reg.crn = 0b0001;
+    reg.crm = 0b0000;
+    reg.op2 = 0b000;
+
+    CHECK(uc_reg_read(uc, UC_ARM64_REG_CP_REG, &reg));
+
+    // EnIA && EnIB
+    reg.val |= (1<<31) | (1<<30);
+
+    CHECK(uc_reg_write(uc, UC_ARM64_REG_CP_REG, &reg));
+    
+    // HCR_EL2
+    reg.op0 = 0b11;
+    reg.op1 = 0b100;
+    reg.crn = 0b0001;
+    reg.crm = 0b0001;
+    reg.op2 = 0b000;
+
+    // HCR.API
+    reg.val |= (1ULL<<41);
+
+    CHECK(uc_reg_write(uc, UC_ARM64_REG_CP_REG, &reg));
+
+    /** Check that PAC worked **/
+    CHECK(uc_emu_start(uc, ADDRESS, ADDRESS + sizeof(ARM64_PAC_CODE) - 1, 0, 0));
+    CHECK(uc_reg_read(uc, UC_ARM64_REG_X1, &x1));
+
+    printf("X1 = 0x%" PRIx64 "\n", x1);
+    if (x1 == 0x0000aaaabbbbccccULL) {
+        printf("FAIL: No PAC tag added!\n");
+    } else {
+        // Expect 0x1401aaaabbbbccccULL with the default key
+        printf("SUCCESS: PAC tag found.\n");
+    }
+
+    uc_close(uc);
+}
+
 int main(int argc, char **argv, char **envp)
 {
     test_arm64_mem_fetch();
+
+    printf("-------------------------\n");
     test_arm64();
 
     printf("-------------------------\n");
@@ -307,5 +392,8 @@ int main(int argc, char **argv, char **envp)
     printf("-------------------------\n");
     test_arm64_hook_mrs();
 
+    printf("-------------------------\n");
+    test_arm64_pac();
+
     return 0;
 }