1 #include <linux/types.h>
6 #include "intel-pt-decoder/insn.h"
7 #include "intel-pt-decoder/intel-pt-insn-decoder.h"
10 u8 data[MAX_INSN_SIZE];
13 const char *expected_op_str;
14 const char *expected_branch_str;
18 struct test_data test_data_32[] = {
19 #include "insn-x86-dat-32.c"
20 {{0x0f, 0x01, 0xee}, 3, 0, NULL, NULL, "0f 01 ee \trdpkru"},
21 {{0x0f, 0x01, 0xef}, 3, 0, NULL, NULL, "0f 01 ef \twrpkru"},
22 {{0}, 0, 0, NULL, NULL, NULL},
25 struct test_data test_data_64[] = {
26 #include "insn-x86-dat-64.c"
27 {{0x0f, 0x01, 0xee}, 3, 0, NULL, NULL, "0f 01 ee \trdpkru"},
28 {{0x0f, 0x01, 0xef}, 3, 0, NULL, NULL, "0f 01 ef \twrpkru"},
29 {{0}, 0, 0, NULL, NULL, NULL},
32 static int get_op(const char *op_str)
38 {"other", INTEL_PT_OP_OTHER},
39 {"call", INTEL_PT_OP_CALL},
40 {"ret", INTEL_PT_OP_RET},
41 {"jcc", INTEL_PT_OP_JCC},
42 {"jmp", INTEL_PT_OP_JMP},
43 {"loop", INTEL_PT_OP_LOOP},
44 {"iret", INTEL_PT_OP_IRET},
45 {"int", INTEL_PT_OP_INT},
46 {"syscall", INTEL_PT_OP_SYSCALL},
47 {"sysret", INTEL_PT_OP_SYSRET},
52 if (!op_str || !strlen(op_str))
55 for (val = vals; val->name; val++) {
56 if (!strcmp(val->name, op_str))
60 pr_debug("Failed to get op\n");
65 static int get_branch(const char *branch_str)
71 {"no_branch", INTEL_PT_BR_NO_BRANCH},
72 {"indirect", INTEL_PT_BR_INDIRECT},
73 {"conditional", INTEL_PT_BR_CONDITIONAL},
74 {"unconditional", INTEL_PT_BR_UNCONDITIONAL},
79 if (!branch_str || !strlen(branch_str))
82 for (val = vals; val->name; val++) {
83 if (!strcmp(val->name, branch_str))
87 pr_debug("Failed to get branch\n");
92 static int test_data_item(struct test_data *dat, int x86_64)
94 struct intel_pt_insn intel_pt_insn;
98 insn_init(&insn, dat->data, MAX_INSN_SIZE, x86_64);
99 insn_get_length(&insn);
101 if (!insn_complete(&insn)) {
102 pr_debug("Failed to decode: %s\n", dat->asm_rep);
106 if (insn.length != dat->expected_length) {
107 pr_debug("Failed to decode length (%d vs expected %d): %s\n",
108 insn.length, dat->expected_length, dat->asm_rep);
112 op = get_op(dat->expected_op_str);
113 branch = get_branch(dat->expected_branch_str);
115 if (intel_pt_get_insn(dat->data, MAX_INSN_SIZE, x86_64, &intel_pt_insn)) {
116 pr_debug("Intel PT failed to decode: %s\n", dat->asm_rep);
120 if ((int)intel_pt_insn.op != op) {
121 pr_debug("Failed to decode 'op' value (%d vs expected %d): %s\n",
122 intel_pt_insn.op, op, dat->asm_rep);
126 if ((int)intel_pt_insn.branch != branch) {
127 pr_debug("Failed to decode 'branch' value (%d vs expected %d): %s\n",
128 intel_pt_insn.branch, branch, dat->asm_rep);
132 if (intel_pt_insn.rel != dat->expected_rel) {
133 pr_debug("Failed to decode 'rel' value (%#x vs expected %#x): %s\n",
134 intel_pt_insn.rel, dat->expected_rel, dat->asm_rep);
138 pr_debug("Decoded ok: %s\n", dat->asm_rep);
143 static int test_data_set(struct test_data *dat_set, int x86_64)
145 struct test_data *dat;
148 for (dat = dat_set; dat->expected_length; dat++) {
149 if (test_data_item(dat, x86_64))
157 * test__insn_x86 - test x86 instruction decoder - new instructions.
159 * This function implements a test that decodes a selection of instructions and
160 * checks the results. The Intel PT function that further categorizes
161 * instructions (i.e. intel_pt_get_insn()) is also checked.
163 * The instructions are originally in insn-x86-dat-src.c which has been
164 * processed by scripts gen-insn-x86-dat.sh and gen-insn-x86-dat.awk to produce
165 * insn-x86-dat-32.c and insn-x86-dat-64.c which are included into this program.
166 * i.e. to add new instructions to the test, edit insn-x86-dat-src.c, run the
167 * gen-insn-x86-dat.sh script, make perf, and then run the test.
169 * If the test passes %0 is returned, otherwise %-1 is returned. Use the
170 * verbose (-v) option to see all the instructions and whether or not they
171 * decoded successfuly.
173 int test__insn_x86(void)
177 if (test_data_set(test_data_32, 0))
180 if (test_data_set(test_data_64, 1))