1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/types.h>
6 #include "tests/tests.h"
7 #include "arch-tests.h"
8 #include "../../../../arch/x86/include/asm/insn.h"
10 #include "intel-pt-decoder/intel-pt-insn-decoder.h"
13 u8 data[MAX_INSN_SIZE];
16 const char *expected_op_str;
17 const char *expected_branch_str;
21 struct test_data test_data_32[] = {
22 #include "insn-x86-dat-32.c"
23 {{0x0f, 0x01, 0xee}, 3, 0, NULL, NULL, "0f 01 ee \trdpkru"},
24 {{0x0f, 0x01, 0xef}, 3, 0, NULL, NULL, "0f 01 ef \twrpkru"},
25 {{0}, 0, 0, NULL, NULL, NULL},
28 struct test_data test_data_64[] = {
29 #include "insn-x86-dat-64.c"
30 {{0x0f, 0x01, 0xee}, 3, 0, NULL, NULL, "0f 01 ee \trdpkru"},
31 {{0x0f, 0x01, 0xef}, 3, 0, NULL, NULL, "0f 01 ef \twrpkru"},
32 {{0}, 0, 0, NULL, NULL, NULL},
35 static int get_op(const char *op_str)
41 {"other", INTEL_PT_OP_OTHER},
42 {"call", INTEL_PT_OP_CALL},
43 {"ret", INTEL_PT_OP_RET},
44 {"jcc", INTEL_PT_OP_JCC},
45 {"jmp", INTEL_PT_OP_JMP},
46 {"loop", INTEL_PT_OP_LOOP},
47 {"iret", INTEL_PT_OP_IRET},
48 {"int", INTEL_PT_OP_INT},
49 {"syscall", INTEL_PT_OP_SYSCALL},
50 {"sysret", INTEL_PT_OP_SYSRET},
51 {"vmentry", INTEL_PT_OP_VMENTRY},
56 if (!op_str || !strlen(op_str))
59 for (val = vals; val->name; val++) {
60 if (!strcmp(val->name, op_str))
64 pr_debug("Failed to get op\n");
69 static int get_branch(const char *branch_str)
75 {"no_branch", INTEL_PT_BR_NO_BRANCH},
76 {"indirect", INTEL_PT_BR_INDIRECT},
77 {"conditional", INTEL_PT_BR_CONDITIONAL},
78 {"unconditional", INTEL_PT_BR_UNCONDITIONAL},
83 if (!branch_str || !strlen(branch_str))
86 for (val = vals; val->name; val++) {
87 if (!strcmp(val->name, branch_str))
91 pr_debug("Failed to get branch\n");
96 static int test_data_item(struct test_data *dat, int x86_64)
98 struct intel_pt_insn intel_pt_insn;
102 insn_init(&insn, dat->data, MAX_INSN_SIZE, x86_64);
103 insn_get_length(&insn);
105 if (!insn_complete(&insn)) {
106 pr_debug("Failed to decode: %s\n", dat->asm_rep);
110 if (insn.length != dat->expected_length) {
111 pr_debug("Failed to decode length (%d vs expected %d): %s\n",
112 insn.length, dat->expected_length, dat->asm_rep);
116 op = get_op(dat->expected_op_str);
117 branch = get_branch(dat->expected_branch_str);
119 if (intel_pt_get_insn(dat->data, MAX_INSN_SIZE, x86_64, &intel_pt_insn)) {
120 pr_debug("Intel PT failed to decode: %s\n", dat->asm_rep);
124 if ((int)intel_pt_insn.op != op) {
125 pr_debug("Failed to decode 'op' value (%d vs expected %d): %s\n",
126 intel_pt_insn.op, op, dat->asm_rep);
130 if ((int)intel_pt_insn.branch != branch) {
131 pr_debug("Failed to decode 'branch' value (%d vs expected %d): %s\n",
132 intel_pt_insn.branch, branch, dat->asm_rep);
136 if (intel_pt_insn.rel != dat->expected_rel) {
137 pr_debug("Failed to decode 'rel' value (%#x vs expected %#x): %s\n",
138 intel_pt_insn.rel, dat->expected_rel, dat->asm_rep);
142 pr_debug("Decoded ok: %s\n", dat->asm_rep);
147 static int test_data_set(struct test_data *dat_set, int x86_64)
149 struct test_data *dat;
152 for (dat = dat_set; dat->expected_length; dat++) {
153 if (test_data_item(dat, x86_64))
161 * test__insn_x86 - test x86 instruction decoder - new instructions.
163 * This function implements a test that decodes a selection of instructions and
164 * checks the results. The Intel PT function that further categorizes
165 * instructions (i.e. intel_pt_get_insn()) is also checked.
167 * The instructions are originally in insn-x86-dat-src.c which has been
168 * processed by scripts gen-insn-x86-dat.sh and gen-insn-x86-dat.awk to produce
169 * insn-x86-dat-32.c and insn-x86-dat-64.c which are included into this program.
170 * i.e. to add new instructions to the test, edit insn-x86-dat-src.c, run the
171 * gen-insn-x86-dat.sh script, make perf, and then run the test.
173 * If the test passes %0 is returned, otherwise %-1 is returned. Use the
174 * verbose (-v) option to see all the instructions and whether or not they
175 * decoded successfully.
177 int test__insn_x86(struct test *test __maybe_unused, int subtest __maybe_unused)
181 if (test_data_set(test_data_32, 0))
184 if (test_data_set(test_data_64, 1))