bool codec_extra_data_common_impl::get_index_by_name(const std::string & _DataName, size_t & _DataIndex) const
{
const std::vector<StrAndArrayPair> & extraData = extra_data();
size_t index = 0;
BOOST_FOREACH(const StrAndArrayPair & elm, extraData)
{
if (_DataName == elm.first)
{
_DataIndex = index;
return true;
}
++index;
}
return false;
}
extern "C" int zehn_load(NUC_FILE *file, void **mem_ptr, int (**entry)(int,char*[]), bool *supports_hww)
{
Zehn_header header;
// The Zehn file may not begin at the file start
size_t file_start = nuc_ftell(file);
if(nuc_fread(&header, sizeof(header), 1, file) != 1)
return 1;
if(header.signature != ZEHN_SIGNATURE || header.version != ZEHN_VERSION || header.file_size > header.alloc_size)
{
puts("[Zehn] This Zehn file is not supported!");
return 1;
}
Storage<Zehn_reloc> relocs(header.reloc_count);
Storage<Zehn_flag> flags(header.flag_count);
Storage<uint8_t> extra_data(header.extra_size);
if(nuc_fread(reinterpret_cast<void*>(relocs.data), sizeof(Zehn_reloc), header.reloc_count, file) != header.reloc_count
|| nuc_fread(reinterpret_cast<void*>(flags.data), sizeof(Zehn_flag), header.flag_count, file) != header.flag_count
|| nuc_fread(reinterpret_cast<void*>(extra_data.data), 1, header.extra_size, file) != header.extra_size)
{
puts("[Zehn] File read failed!");
return 1;
}
size_t remaining_mem = header.alloc_size - nuc_ftell(file) + file_start, remaining_file = header.file_size - nuc_ftell(file) + file_start;
if(emu_debug_alloc_ptr)
{
if(emu_debug_alloc_size < remaining_mem)
{
puts("[Zehn] emu_debug_alloc_size too small!");
*mem_ptr = malloc(remaining_mem);
}
else
*mem_ptr = emu_debug_alloc_ptr;
}
else
*mem_ptr = malloc(remaining_mem);
uint8_t *base = reinterpret_cast<uint8_t*>(*mem_ptr);
if(!base)
{
puts("[Zehn] Memory allocation failed!");
return 1;
}
if(relocs.data[0].type == Zehn_reloc_type::FILE_COMPRESSED)
{
if(relocs.data[0].offset != static_cast<int>(Zehn_compress_type::ZLIB))
{
puts("[Zehn] Compression format not supported!");
return 1;
}
Storage<uint8_t> compressed(remaining_file);
if(nuc_fread(compressed.data, remaining_file, 1, file) != 1)
{
puts("[Zehn] File read failed!");
return 1;
}
uLongf dest_len = remaining_mem;
if(uncompress(base, &dest_len, compressed.data, remaining_file) != Z_OK)
{
puts("[Zehn] Decompression failed!");
return 1;
}
std::fill(base + dest_len, base + remaining_mem, 0);
}
else
{
if(nuc_fread(base, remaining_file, 1, file) != 1)
{
puts("[Zehn] File read failed!");
return 1;
}
// Fill rest with zeros (.bss and other NOBITS sections)
std::fill(base + remaining_file, base + remaining_mem, 0);
}
const char *application_name = "(unknown)", *application_author = "(unknown)", *application_notice = "(no notice)";
unsigned int application_version = 1, ndless_version_min = 0, ndless_version_max = UINT_MAX,
ndless_revision_min = 0, ndless_revision_max = UINT_MAX;
// Iterate through each flag
for(Zehn_flag &f : flags)
{
const char *ptr;
switch(f.type)
{
case Zehn_flag_type::EXECUTABLE_NAME:
if(!zehn_check_string(extra_data.begin(), f, 255, &application_name))
{
puts("[Zehn] Invalid application name!");
return 1;
}
break;
case Zehn_flag_type::EXECUTABLE_NOTICE:
if(zehn_check_string(extra_data.begin(), f, 1024, &ptr))
application_notice = ptr;
break;
case Zehn_flag_type::EXECUTABLE_AUTHOR:
if(zehn_check_string(extra_data.begin(), f, 128, &ptr))
application_author = ptr;
break;
case Zehn_flag_type::EXECUTABLE_VERSION:
application_version = f.data;
break;
case Zehn_flag_type::NDLESS_VERSION_MIN:
ndless_version_min = f.data;
break;
case Zehn_flag_type::NDLESS_REVISION_MIN:
ndless_revision_min = f.data;
break;
case Zehn_flag_type::NDLESS_VERSION_MAX:
ndless_version_max = f.data;
break;
case Zehn_flag_type::NDLESS_REVISION_MAX:
ndless_revision_max = f.data;
break;
case Zehn_flag_type::RUNS_ON_COLOR:
if(f.data == false && has_colors)
{
msgbox("Error", "The application %s doesn't support CX and CM calculators!", application_name);
return 2;
}
break;
case Zehn_flag_type::RUNS_ON_CLICKPAD:
if(f.data == false && !is_touchpad)
{
msgbox("Error", "The application %s doesn't support clickpads!", application_name);
return 2;
}
break;
case Zehn_flag_type::RUNS_ON_TOUCHPAD:
if(f.data == false && is_touchpad)
{
msgbox("Error", "The application %s doesn't support touchpads!", application_name);
return 2;
}
break;
case Zehn_flag_type::RUNS_ON_32MB:
if(f.data == false && (!has_colors || is_cm))
{
msgbox("Error", "The application %s requires more than 32MB of RAM!", application_name);
return 2;
}
break;
case Zehn_flag_type::RUNS_ON_HWW:
*supports_hww = f.data;
break;
default:
break;
}
}
// Show some information about the executable
if(isKeyPressed(KEY_NSPIRE_CAT))
{
char info[1536];
sprintf(info, "Name: %s Version: %u\nAuthor: %s\nNotice: %s", application_name, application_version, application_author, application_notice);
show_msgbox("Information about the executable", info);
return 2;
}
if(NDLESS_VERSION < ndless_version_min || (NDLESS_VERSION == ndless_version_min && NDLESS_REVISION < ndless_revision_min))
{
msgbox("Error", "The application %s requires at least ndless %d.%d.%d!", application_name, ndless_version_min / 10, ndless_version_min % 10, ndless_revision_min);
return 2;
}
if(NDLESS_VERSION > ndless_version_max || (NDLESS_VERSION == ndless_version_max && NDLESS_REVISION > ndless_revision_max))
{
if(ndless_revision_max != UINT_MAX)
msgbox("Error", "The application %s requires ndless %d.%d.%d or older!", application_name, ndless_version_max / 10, ndless_version_max % 10, ndless_revision_max);
else
msgbox("Error", "The application %s requires ndless %d.%d or older!", application_name, ndless_version_max / 10, ndless_version_max % 10);
return 2;
}
// Iterate through the reloc table
for(Zehn_reloc &r : relocs)
{
if(r.offset >= remaining_mem)
{
puts("[Zehn] Wrong reloc in Zehn file!");
return 1;
}
// No alignment guaranteed!
uint32_t *place = reinterpret_cast<uint32_t*>(base + r.offset);
switch(r.type)
{
//Handled above
case Zehn_reloc_type::FILE_COMPRESSED:
break;
case Zehn_reloc_type::UNALIGNED_RELOC:
if(r.offset != 0)
{
printf("[Zehn] Unexpected UNALIGNED_RELOC value %lu!\n", r.offset);
return 1;
}
break;
case Zehn_reloc_type::ADD_BASE:
wu32(place, ru32(place) + reinterpret_cast<uint32_t>(base));
break;
case Zehn_reloc_type::ADD_BASE_GOT:
{
uint32_t u32;
while((u32 = ru32(place)) != 0xFFFFFFFF)
wu32(place++, u32 + reinterpret_cast<uint32_t>(base));
break;
}
case Zehn_reloc_type::SET_ZERO:
wu32(place, 0);
break;
default:
printf("[Zehn] Unsupported reloc %d!\n", static_cast<int>(r.type));
return 1;
}
}
*entry = reinterpret_cast<int (*)(int,char*[])>(base + header.entry_offset);
return 0;
}
std::string codec_extra_data_common_impl::get_data_name(size_t _DataIndex) const
{
return extra_data().at(_DataIndex).first;
}
size_t codec_extra_data_common_impl::get_data_size(size_t _DataIndex) const
{
return extra_data().at(_DataIndex).second.second;
}
uint8_t * codec_extra_data_common_impl::get_data(size_t _DataIndex) const
{
return extra_data().at(_DataIndex).second.first.get();
}
size_t codec_extra_data_common_impl::get_data_count() const
{
return extra_data().size();
}