--- /dev/null
+#include <linux/types.h>
+
+#include "debug.h"
+#include "tests/tests.h"
+#include "arch-tests.h"
+
+#include "intel-pt-decoder/insn.h"
+#include "intel-pt-decoder/intel-pt-insn-decoder.h"
+
+struct test_data {
+ u8 data[MAX_INSN_SIZE];
+ int expected_length;
+ int expected_rel;
+ const char *expected_op_str;
+ const char *expected_branch_str;
+ const char *asm_rep;
+};
+
+struct test_data test_data_32[] = {
+#include "insn-x86-dat-32.c"
+ {{0x0f, 0x01, 0xee}, 3, 0, NULL, NULL, "0f 01 ee \trdpkru"},
+ {{0x0f, 0x01, 0xef}, 3, 0, NULL, NULL, "0f 01 ef \twrpkru"},
+ {{0}, 0, 0, NULL, NULL, NULL},
+};
+
+struct test_data test_data_64[] = {
+#include "insn-x86-dat-64.c"
+ {{0x0f, 0x01, 0xee}, 3, 0, NULL, NULL, "0f 01 ee \trdpkru"},
+ {{0x0f, 0x01, 0xef}, 3, 0, NULL, NULL, "0f 01 ef \twrpkru"},
+ {{0}, 0, 0, NULL, NULL, NULL},
+};
+
+static int get_op(const char *op_str)
+{
+ struct val_data {
+ const char *name;
+ int val;
+ } vals[] = {
+ {"other", INTEL_PT_OP_OTHER},
+ {"call", INTEL_PT_OP_CALL},
+ {"ret", INTEL_PT_OP_RET},
+ {"jcc", INTEL_PT_OP_JCC},
+ {"jmp", INTEL_PT_OP_JMP},
+ {"loop", INTEL_PT_OP_LOOP},
+ {"iret", INTEL_PT_OP_IRET},
+ {"int", INTEL_PT_OP_INT},
+ {"syscall", INTEL_PT_OP_SYSCALL},
+ {"sysret", INTEL_PT_OP_SYSRET},
+ {NULL, 0},
+ };
+ struct val_data *val;
+
+ if (!op_str || !strlen(op_str))
+ return 0;
+
+ for (val = vals; val->name; val++) {
+ if (!strcmp(val->name, op_str))
+ return val->val;
+ }
+
+ pr_debug("Failed to get op\n");
+
+ return -1;
+}
+
+static int get_branch(const char *branch_str)
+{
+ struct val_data {
+ const char *name;
+ int val;
+ } vals[] = {
+ {"no_branch", INTEL_PT_BR_NO_BRANCH},
+ {"indirect", INTEL_PT_BR_INDIRECT},
+ {"conditional", INTEL_PT_BR_CONDITIONAL},
+ {"unconditional", INTEL_PT_BR_UNCONDITIONAL},
+ {NULL, 0},
+ };
+ struct val_data *val;
+
+ if (!branch_str || !strlen(branch_str))
+ return 0;
+
+ for (val = vals; val->name; val++) {
+ if (!strcmp(val->name, branch_str))
+ return val->val;
+ }
+
+ pr_debug("Failed to get branch\n");
+
+ return -1;
+}
+
+static int test_data_item(struct test_data *dat, int x86_64)
+{
+ struct intel_pt_insn intel_pt_insn;
+ struct insn insn;
+ int op, branch;
+
+ insn_init(&insn, dat->data, MAX_INSN_SIZE, x86_64);
+ insn_get_length(&insn);
+
+ if (!insn_complete(&insn)) {
+ pr_debug("Failed to decode: %s\n", dat->asm_rep);
+ return -1;
+ }
+
+ if (insn.length != dat->expected_length) {
+ pr_debug("Failed to decode length (%d vs expected %d): %s\n",
+ insn.length, dat->expected_length, dat->asm_rep);
+ return -1;
+ }
+
+ op = get_op(dat->expected_op_str);
+ branch = get_branch(dat->expected_branch_str);
+
+ if (intel_pt_get_insn(dat->data, MAX_INSN_SIZE, x86_64, &intel_pt_insn)) {
+ pr_debug("Intel PT failed to decode: %s\n", dat->asm_rep);
+ return -1;
+ }
+
+ if ((int)intel_pt_insn.op != op) {
+ pr_debug("Failed to decode 'op' value (%d vs expected %d): %s\n",
+ intel_pt_insn.op, op, dat->asm_rep);
+ return -1;
+ }
+
+ if ((int)intel_pt_insn.branch != branch) {
+ pr_debug("Failed to decode 'branch' value (%d vs expected %d): %s\n",
+ intel_pt_insn.branch, branch, dat->asm_rep);
+ return -1;
+ }
+
+ if (intel_pt_insn.rel != dat->expected_rel) {
+ pr_debug("Failed to decode 'rel' value (%#x vs expected %#x): %s\n",
+ intel_pt_insn.rel, dat->expected_rel, dat->asm_rep);
+ return -1;
+ }
+
+ pr_debug("Decoded ok: %s\n", dat->asm_rep);
+
+ return 0;
+}
+
+static int test_data_set(struct test_data *dat_set, int x86_64)
+{
+ struct test_data *dat;
+ int ret = 0;
+
+ for (dat = dat_set; dat->expected_length; dat++) {
+ if (test_data_item(dat, x86_64))
+ ret = -1;
+ }
+
+ return ret;
+}
+
+/**
+ * test__insn_x86 - test x86 instruction decoder - new instructions.
+ *
+ * This function implements a test that decodes a selection of instructions and
+ * checks the results. The Intel PT function that further categorizes
+ * instructions (i.e. intel_pt_get_insn()) is also checked.
+ *
+ * The instructions are originally in insn-x86-dat-src.c which has been
+ * processed by scripts gen-insn-x86-dat.sh and gen-insn-x86-dat.awk to produce
+ * insn-x86-dat-32.c and insn-x86-dat-64.c which are included into this program.
+ * i.e. to add new instructions to the test, edit insn-x86-dat-src.c, run the
+ * gen-insn-x86-dat.sh script, make perf, and then run the test.
+ *
+ * If the test passes %0 is returned, otherwise %-1 is returned. Use the
+ * verbose (-v) option to see all the instructions and whether or not they
+ * decoded successfuly.
+ */
+int test__insn_x86(void)
+{
+ int ret = 0;
+
+ if (test_data_set(test_data_32, 0))
+ ret = -1;
+
+ if (test_data_set(test_data_64, 1))
+ ret = -1;
+
+ return ret;
+}
Code Review / kvmfornfv.git / blobdiff