mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-10-31 08:08:51 +01:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
23
tools/testing/selftests/breakpoints/Makefile
Normal file
23
tools/testing/selftests/breakpoints/Makefile
Normal file
|
|
@ -0,0 +1,23 @@
|
|||
# Taken from perf makefile
|
||||
uname_M := $(shell uname -m 2>/dev/null || echo not)
|
||||
ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/i386/)
|
||||
ifeq ($(ARCH),i386)
|
||||
ARCH := x86
|
||||
endif
|
||||
ifeq ($(ARCH),x86_64)
|
||||
ARCH := x86
|
||||
endif
|
||||
|
||||
|
||||
all:
|
||||
ifeq ($(ARCH),x86)
|
||||
gcc breakpoint_test.c -o breakpoint_test
|
||||
else
|
||||
echo "Not an x86 target, can't build breakpoints selftests"
|
||||
endif
|
||||
|
||||
run_tests:
|
||||
@./breakpoint_test || echo "breakpoints selftests: [FAIL]"
|
||||
|
||||
clean:
|
||||
rm -fr breakpoint_test
|
||||
394
tools/testing/selftests/breakpoints/breakpoint_test.c
Normal file
394
tools/testing/selftests/breakpoints/breakpoint_test.c
Normal file
|
|
@ -0,0 +1,394 @@
|
|||
/*
|
||||
* Copyright (C) 2011 Red Hat, Inc., Frederic Weisbecker <fweisbec@redhat.com>
|
||||
*
|
||||
* Licensed under the terms of the GNU GPL License version 2
|
||||
*
|
||||
* Selftests for breakpoints (and more generally the do_debug() path) in x86.
|
||||
*/
|
||||
|
||||
|
||||
#include <sys/ptrace.h>
|
||||
#include <unistd.h>
|
||||
#include <stddef.h>
|
||||
#include <sys/user.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <signal.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/wait.h>
|
||||
|
||||
|
||||
/* Breakpoint access modes */
|
||||
enum {
|
||||
BP_X = 1,
|
||||
BP_RW = 2,
|
||||
BP_W = 4,
|
||||
};
|
||||
|
||||
static pid_t child_pid;
|
||||
|
||||
/*
|
||||
* Ensures the child and parent are always "talking" about
|
||||
* the same test sequence. (ie: that we haven't forgotten
|
||||
* to call check_trapped() somewhere).
|
||||
*/
|
||||
static int nr_tests;
|
||||
|
||||
static void set_breakpoint_addr(void *addr, int n)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = ptrace(PTRACE_POKEUSER, child_pid,
|
||||
offsetof(struct user, u_debugreg[n]), addr);
|
||||
if (ret) {
|
||||
perror("Can't set breakpoint addr\n");
|
||||
exit(-1);
|
||||
}
|
||||
}
|
||||
|
||||
static void toggle_breakpoint(int n, int type, int len,
|
||||
int local, int global, int set)
|
||||
{
|
||||
int ret;
|
||||
|
||||
int xtype, xlen;
|
||||
unsigned long vdr7, dr7;
|
||||
|
||||
switch (type) {
|
||||
case BP_X:
|
||||
xtype = 0;
|
||||
break;
|
||||
case BP_W:
|
||||
xtype = 1;
|
||||
break;
|
||||
case BP_RW:
|
||||
xtype = 3;
|
||||
break;
|
||||
}
|
||||
|
||||
switch (len) {
|
||||
case 1:
|
||||
xlen = 0;
|
||||
break;
|
||||
case 2:
|
||||
xlen = 4;
|
||||
break;
|
||||
case 4:
|
||||
xlen = 0xc;
|
||||
break;
|
||||
case 8:
|
||||
xlen = 8;
|
||||
break;
|
||||
}
|
||||
|
||||
dr7 = ptrace(PTRACE_PEEKUSER, child_pid,
|
||||
offsetof(struct user, u_debugreg[7]), 0);
|
||||
|
||||
vdr7 = (xlen | xtype) << 16;
|
||||
vdr7 <<= 4 * n;
|
||||
|
||||
if (local) {
|
||||
vdr7 |= 1 << (2 * n);
|
||||
vdr7 |= 1 << 8;
|
||||
}
|
||||
if (global) {
|
||||
vdr7 |= 2 << (2 * n);
|
||||
vdr7 |= 1 << 9;
|
||||
}
|
||||
|
||||
if (set)
|
||||
dr7 |= vdr7;
|
||||
else
|
||||
dr7 &= ~vdr7;
|
||||
|
||||
ret = ptrace(PTRACE_POKEUSER, child_pid,
|
||||
offsetof(struct user, u_debugreg[7]), dr7);
|
||||
if (ret) {
|
||||
perror("Can't set dr7");
|
||||
exit(-1);
|
||||
}
|
||||
}
|
||||
|
||||
/* Dummy variables to test read/write accesses */
|
||||
static unsigned long long dummy_var[4];
|
||||
|
||||
/* Dummy functions to test execution accesses */
|
||||
static void dummy_func(void) { }
|
||||
static void dummy_func1(void) { }
|
||||
static void dummy_func2(void) { }
|
||||
static void dummy_func3(void) { }
|
||||
|
||||
static void (*dummy_funcs[])(void) = {
|
||||
dummy_func,
|
||||
dummy_func1,
|
||||
dummy_func2,
|
||||
dummy_func3,
|
||||
};
|
||||
|
||||
static int trapped;
|
||||
|
||||
static void check_trapped(void)
|
||||
{
|
||||
/*
|
||||
* If we haven't trapped, wake up the parent
|
||||
* so that it notices the failure.
|
||||
*/
|
||||
if (!trapped)
|
||||
kill(getpid(), SIGUSR1);
|
||||
trapped = 0;
|
||||
|
||||
nr_tests++;
|
||||
}
|
||||
|
||||
static void write_var(int len)
|
||||
{
|
||||
char *pcval; short *psval; int *pival; long long *plval;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < 4; i++) {
|
||||
switch (len) {
|
||||
case 1:
|
||||
pcval = (char *)&dummy_var[i];
|
||||
*pcval = 0xff;
|
||||
break;
|
||||
case 2:
|
||||
psval = (short *)&dummy_var[i];
|
||||
*psval = 0xffff;
|
||||
break;
|
||||
case 4:
|
||||
pival = (int *)&dummy_var[i];
|
||||
*pival = 0xffffffff;
|
||||
break;
|
||||
case 8:
|
||||
plval = (long long *)&dummy_var[i];
|
||||
*plval = 0xffffffffffffffffLL;
|
||||
break;
|
||||
}
|
||||
check_trapped();
|
||||
}
|
||||
}
|
||||
|
||||
static void read_var(int len)
|
||||
{
|
||||
char cval; short sval; int ival; long long lval;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < 4; i++) {
|
||||
switch (len) {
|
||||
case 1:
|
||||
cval = *(char *)&dummy_var[i];
|
||||
break;
|
||||
case 2:
|
||||
sval = *(short *)&dummy_var[i];
|
||||
break;
|
||||
case 4:
|
||||
ival = *(int *)&dummy_var[i];
|
||||
break;
|
||||
case 8:
|
||||
lval = *(long long *)&dummy_var[i];
|
||||
break;
|
||||
}
|
||||
check_trapped();
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Do the r/w/x accesses to trigger the breakpoints. And run
|
||||
* the usual traps.
|
||||
*/
|
||||
static void trigger_tests(void)
|
||||
{
|
||||
int len, local, global, i;
|
||||
char val;
|
||||
int ret;
|
||||
|
||||
ret = ptrace(PTRACE_TRACEME, 0, NULL, 0);
|
||||
if (ret) {
|
||||
perror("Can't be traced?\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/* Wake up father so that it sets up the first test */
|
||||
kill(getpid(), SIGUSR1);
|
||||
|
||||
/* Test instruction breakpoints */
|
||||
for (local = 0; local < 2; local++) {
|
||||
for (global = 0; global < 2; global++) {
|
||||
if (!local && !global)
|
||||
continue;
|
||||
|
||||
for (i = 0; i < 4; i++) {
|
||||
dummy_funcs[i]();
|
||||
check_trapped();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Test write watchpoints */
|
||||
for (len = 1; len <= sizeof(long); len <<= 1) {
|
||||
for (local = 0; local < 2; local++) {
|
||||
for (global = 0; global < 2; global++) {
|
||||
if (!local && !global)
|
||||
continue;
|
||||
write_var(len);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Test read/write watchpoints (on read accesses) */
|
||||
for (len = 1; len <= sizeof(long); len <<= 1) {
|
||||
for (local = 0; local < 2; local++) {
|
||||
for (global = 0; global < 2; global++) {
|
||||
if (!local && !global)
|
||||
continue;
|
||||
read_var(len);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Icebp trap */
|
||||
asm(".byte 0xf1\n");
|
||||
check_trapped();
|
||||
|
||||
/* Int 3 trap */
|
||||
asm("int $3\n");
|
||||
check_trapped();
|
||||
|
||||
kill(getpid(), SIGUSR1);
|
||||
}
|
||||
|
||||
static void check_success(const char *msg)
|
||||
{
|
||||
const char *msg2;
|
||||
int child_nr_tests;
|
||||
int status;
|
||||
|
||||
/* Wait for the child to SIGTRAP */
|
||||
wait(&status);
|
||||
|
||||
msg2 = "Failed";
|
||||
|
||||
if (WSTOPSIG(status) == SIGTRAP) {
|
||||
child_nr_tests = ptrace(PTRACE_PEEKDATA, child_pid,
|
||||
&nr_tests, 0);
|
||||
if (child_nr_tests == nr_tests)
|
||||
msg2 = "Ok";
|
||||
if (ptrace(PTRACE_POKEDATA, child_pid, &trapped, 1)) {
|
||||
perror("Can't poke\n");
|
||||
exit(-1);
|
||||
}
|
||||
}
|
||||
|
||||
nr_tests++;
|
||||
|
||||
printf("%s [%s]\n", msg, msg2);
|
||||
}
|
||||
|
||||
static void launch_instruction_breakpoints(char *buf, int local, int global)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < 4; i++) {
|
||||
set_breakpoint_addr(dummy_funcs[i], i);
|
||||
toggle_breakpoint(i, BP_X, 1, local, global, 1);
|
||||
ptrace(PTRACE_CONT, child_pid, NULL, 0);
|
||||
sprintf(buf, "Test breakpoint %d with local: %d global: %d",
|
||||
i, local, global);
|
||||
check_success(buf);
|
||||
toggle_breakpoint(i, BP_X, 1, local, global, 0);
|
||||
}
|
||||
}
|
||||
|
||||
static void launch_watchpoints(char *buf, int mode, int len,
|
||||
int local, int global)
|
||||
{
|
||||
const char *mode_str;
|
||||
int i;
|
||||
|
||||
if (mode == BP_W)
|
||||
mode_str = "write";
|
||||
else
|
||||
mode_str = "read";
|
||||
|
||||
for (i = 0; i < 4; i++) {
|
||||
set_breakpoint_addr(&dummy_var[i], i);
|
||||
toggle_breakpoint(i, mode, len, local, global, 1);
|
||||
ptrace(PTRACE_CONT, child_pid, NULL, 0);
|
||||
sprintf(buf, "Test %s watchpoint %d with len: %d local: "
|
||||
"%d global: %d", mode_str, i, len, local, global);
|
||||
check_success(buf);
|
||||
toggle_breakpoint(i, mode, len, local, global, 0);
|
||||
}
|
||||
}
|
||||
|
||||
/* Set the breakpoints and check the child successfully trigger them */
|
||||
static void launch_tests(void)
|
||||
{
|
||||
char buf[1024];
|
||||
int len, local, global, i;
|
||||
|
||||
/* Instruction breakpoints */
|
||||
for (local = 0; local < 2; local++) {
|
||||
for (global = 0; global < 2; global++) {
|
||||
if (!local && !global)
|
||||
continue;
|
||||
launch_instruction_breakpoints(buf, local, global);
|
||||
}
|
||||
}
|
||||
|
||||
/* Write watchpoint */
|
||||
for (len = 1; len <= sizeof(long); len <<= 1) {
|
||||
for (local = 0; local < 2; local++) {
|
||||
for (global = 0; global < 2; global++) {
|
||||
if (!local && !global)
|
||||
continue;
|
||||
launch_watchpoints(buf, BP_W, len,
|
||||
local, global);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Read-Write watchpoint */
|
||||
for (len = 1; len <= sizeof(long); len <<= 1) {
|
||||
for (local = 0; local < 2; local++) {
|
||||
for (global = 0; global < 2; global++) {
|
||||
if (!local && !global)
|
||||
continue;
|
||||
launch_watchpoints(buf, BP_RW, len,
|
||||
local, global);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Icebp traps */
|
||||
ptrace(PTRACE_CONT, child_pid, NULL, 0);
|
||||
check_success("Test icebp");
|
||||
|
||||
/* Int 3 traps */
|
||||
ptrace(PTRACE_CONT, child_pid, NULL, 0);
|
||||
check_success("Test int 3 trap");
|
||||
|
||||
ptrace(PTRACE_CONT, child_pid, NULL, 0);
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
pid_t pid;
|
||||
int ret;
|
||||
|
||||
pid = fork();
|
||||
if (!pid) {
|
||||
trigger_tests();
|
||||
return 0;
|
||||
}
|
||||
|
||||
child_pid = pid;
|
||||
|
||||
wait(NULL);
|
||||
|
||||
launch_tests();
|
||||
|
||||
wait(NULL);
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue