51dc0cc7a4
* Fix error in lldb-dap when the stack trace contains a frame without a module by simply showing the first 32 assembly instructions after the PC. * Adds a test with a simple example that triggers this case.
38 lines
1.0 KiB
C
38 lines
1.0 KiB
C
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/mman.h>
|
|
#include <unistd.h>
|
|
|
|
extern uint8_t __start_target_section[];
|
|
extern uint8_t __stop_target_section[];
|
|
|
|
__attribute__((used, section("target_section"))) int target_function(void) {
|
|
return 42;
|
|
}
|
|
|
|
typedef int (*target_function_t)(void);
|
|
|
|
int main(void) {
|
|
size_t target_function_size = __stop_target_section - __start_target_section;
|
|
size_t page_size = sysconf(_SC_PAGESIZE);
|
|
size_t page_aligned_size =
|
|
(target_function_size + page_size - 1) & ~(page_size - 1);
|
|
|
|
void *executable_memory =
|
|
mmap(NULL, page_aligned_size, PROT_READ | PROT_WRITE | PROT_EXEC,
|
|
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
|
|
if (executable_memory == MAP_FAILED) {
|
|
perror("mmap");
|
|
return 1;
|
|
}
|
|
|
|
memcpy(executable_memory, __start_target_section, target_function_size);
|
|
|
|
target_function_t func = (target_function_t)executable_memory;
|
|
int result = func(); // Break here
|
|
printf("Result from target function: %d\n", result);
|
|
|
|
return 0;
|
|
}
|