int find_name(pid_t pid, const char *name, const char *libn,
unsigned long *addr) {
struct mm mm[1000] = { 0 };
unsigned long libcaddr;
int nmm;
char libc[1024] = { 0 };
symtab_t s;
if (0 > load_memmap(pid, mm, &nmm)) {
ALOGD("cannot read memory map\n");
return -1;
}
if (0
> find_libname((char *) libn, (char *) libc, sizeof(libc),
&libcaddr, mm, nmm)) {
ALOGD("cannot find lib: %s\n", libn);
return -1;
}
//ALOGD("lib: >%s<\n", libc)
s = load_symtab(libc);
if (!s) {
ALOGD("cannot read symbol table\n");
return -1;
}
if (0 > lookup_func_sym(s, (char *) name, addr)) {
ALOGD("cannot find function: %s\n", name);
return -1;
}
*addr += libcaddr;
return 0;
}
static int find_linker(pid_t pid, unsigned long *addr)
{
struct mm mm[1000];
unsigned long libcaddr;
int nmm;
char libc[256];
symtab_t s;
if (0 > load_memmap(pid, mm, &nmm)) {
#ifdef DEBUG
printf("cannot read memory map\n");
#endif
return -1;
}
if (0 > find_linker_mem(libc, sizeof(libc), &libcaddr, mm, nmm)) {
#ifdef DEBUG
printf("cannot find libc\n");
#endif
return -1;
}
*addr = libcaddr;
return 1;
}
static int
find_name(pid_t pid, char *name, unsigned long *addr)
{
struct mm mm[1000];
unsigned long libcaddr;
int nmm;
char libc[256];
symtab_t s;
if (0 > load_memmap(pid, mm, &nmm)) {
printf("cannot read memory map\n");
return -1;
}
if (0 > find_libc(libc, sizeof(libc), &libcaddr, mm, nmm)) {
printf("cannot find libc\n");
return -1;
}
s = load_symtab(libc);
if (!s) {
printf("cannot read symbol table\n");
return -1;
}
if (0 > lookup_func_sym(s, name, addr)) {
printf("cannot find %s\n", name);
return -1;
}
*addr += libcaddr;
return 0;
}
int find_name(pid_t pid, char *name, char *libn, unsigned long *addr)
{
struct mm mm[250];
unsigned long libcaddr;
int nmm;
char libc[256];
symtab_t s;
int load_memmap_return;
load_memmap_return = load_memmap(pid, mm, &nmm);
if (0 > load_memmap_return) {
//printf("cannot read memory map\n");
return load_memmap_return;
}
if (0 > find_libname(libn, libc, sizeof(libc), &libcaddr, mm, nmm)) {
log("cannot find libc\n");
return -2;
}
s = load_symtab(libc);
if (!s) {
//printf("cannot read symbol table\n");
return -3;
}
if (0 > lookup_func_sym(s, name, addr)) {
//printf("cannot find %s\n", name);
return -4;
}
*addr += libcaddr;
return 0;
}
int find_name(pid_t pid, char *name, char *libn, unsigned long *addr)
{
struct mm mm[250];
unsigned long libcaddr;
int nmm;
char libc[512];
symtab_t s;
int load_memmap_return;
int tmp;
load_memmap_return = load_memmap(pid, mm, &nmm);
if (0 > load_memmap_return) {
//printf("cannot read memory map\n");
return load_memmap_return;
}
if (0 > find_libname(libn, libc, sizeof(libc), &libcaddr, mm, nmm)) {
/* #ifdef DEBUG_UTIL */
/* log("cannot find %s\n", libn); */
/* #endif */
return -2;
}
s = load_symtab(libc);
if (!s) {
//printf("cannot read symbol table\n");
return -3;
}
/* #ifdef DEBUG_UTIL */
/* log("pid %d, name %s, libn %s\n", pid, name, libn); */
/* #endif */
if (0 > lookup_func_sym(s, name, addr)) {
/* #ifdef DEBUG_UTIL */
/* log("fail\n"); */
/* log("find_name: cannot find %s\n", name); */
/* #endif */
return -4;
}
/* #ifdef DEBUG_UTIL */
/* log("not fail %p %d\n", addr, *addr); */
/* #endif */
//tmp = 4;
*addr += libcaddr;
return 0;
}
int find_libbase(pid_t pid, const char *libn, unsigned long *addr) {
struct mm mm[1000] = { 0 };
unsigned long libcaddr;
int nmm;
char libc[1024] = { 0 };
symtab_t s;
if (0 > load_memmap(pid, mm, &nmm)) {
ALOGD("cannot read memory map\n");
return -1;
}
if (0 > find_libname(libn, libc, sizeof(libc), &libcaddr, mm, nmm)) {
ALOGD("cannot find lib\n");
return -1;
}
*addr = libcaddr;
return 0;
}
int main()
{
// system("echo out > /sys/class/gpio/gpio128/direction");
system("echo in > /sys/class/gpio/gpio129/direction");
printf("after init\n");
uint8_t* mmap_reg = load_memmap();
int pin= 129; //128;
printf("after mmap\n");
uint32_t mask=(uint32_t)(1 << (pin % 32));
uint8_t valoffsetOn = 0x34;
uint8_t valoffsetOff = 0x4c;
uint8_t* loc=(pin / 32) * sizeof(uint32_t)+ mmap_reg;
for (;;) {
//printf("inside for\n");
*(volatile uint32_t*) (loc + valoffsetOn) = mask;
*(volatile uint32_t*) (loc + valoffsetOff) = mask;
}
return MRAA_SUCCESS;
}