diff options
Diffstat (limited to 'gdb/nat/windows-nat.c')
-rw-r--r-- | gdb/nat/windows-nat.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/gdb/nat/windows-nat.c b/gdb/nat/windows-nat.c index 6c0218c..8217a98 100644 --- a/gdb/nat/windows-nat.c +++ b/gdb/nat/windows-nat.c @@ -69,4 +69,61 @@ windows_thread_info::resume () suspended = 0; } +const char * +get_image_name (HANDLE h, void *address, int unicode) +{ +#ifdef __CYGWIN__ + static char buf[MAX_PATH]; +#else + static char buf[(2 * MAX_PATH) + 1]; +#endif + DWORD size = unicode ? sizeof (WCHAR) : sizeof (char); + char *address_ptr; + int len = 0; + char b[2]; + SIZE_T done; + + /* Attempt to read the name of the dll that was detected. + This is documented to work only when actively debugging + a program. It will not work for attached processes. */ + if (address == NULL) + return NULL; + +#ifdef _WIN32_WCE + /* Windows CE reports the address of the image name, + instead of an address of a pointer into the image name. */ + address_ptr = address; +#else + /* See if we could read the address of a string, and that the + address isn't null. */ + if (!ReadProcessMemory (h, address, &address_ptr, + sizeof (address_ptr), &done) + || done != sizeof (address_ptr) + || !address_ptr) + return NULL; +#endif + + /* Find the length of the string. */ + while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) + && (b[0] != 0 || b[size - 1] != 0) && done == size) + continue; + + if (!unicode) + ReadProcessMemory (h, address_ptr, buf, len, &done); + else + { + WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR)); + ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR), + &done); +#ifdef __CYGWIN__ + wcstombs (buf, unicode_address, MAX_PATH); +#else + WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, sizeof buf, + 0, 0); +#endif + } + + return buf; +} + } |