ErrorCode PTrace::writeRegisterSet(ProcessThreadId const &ptid, int regSetCode,
void const *buffer, size_t length) {
struct iovec iov = {const_cast<void *>(buffer), length};
if (wrapPtrace(PTRACE_SETREGSET, ptid.validTid() ? ptid.tid : ptid.pid,
regSetCode, &iov) < 0)
return Platform::TranslateError();
return kSuccess;
}
ErrorCode PTrace::readRegisterSet(ProcessThreadId const &ptid, int regSetCode,
void *buffer, size_t length) {
struct iovec iov = {buffer, length};
if (wrapPtrace(PTRACE_GETREGSET, ptid.validTid() ? ptid.tid : ptid.pid,
regSetCode, &iov) < 0)
return Platform::TranslateError();
// On return, the kernel modifies iov.len to return the number of bytes read.
// This should be exactly equal to the number of bytes requested.
DS2ASSERT(iov.iov_len == length);
return kSuccess;
}
