diff options
Diffstat (limited to 'kernel/src/test_support/page_mapper.cpp')
| -rw-r--r-- | kernel/src/test_support/page_mapper.cpp | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/kernel/src/test_support/page_mapper.cpp b/kernel/src/test_support/page_mapper.cpp index 5a1b747..805998b 100644 --- a/kernel/src/test_support/page_mapper.cpp +++ b/kernel/src/test_support/page_mapper.cpp @@ -7,6 +7,7 @@ #include <cstddef> #include <format> #include <stdexcept> +#include <sys/mman.h> namespace kernel::tests { @@ -20,10 +21,25 @@ namespace kernel::tests page_mappings.insert({page.number(), frame}); auto page_address = page.start_address(); + auto sandbox_start = memory.heap_base(); + auto sandbox_end = sandbox_start + memory.heap_size(); - if (page_address >= kapi::memory::mmio_base) + if (page_address >= sandbox_start && page_address < sandbox_end) { - throw std::invalid_argument{"MMIO mapping not yet supported in testing!"}; + auto virtual_target = static_cast<std::byte *>(page_address); + auto physical_offset = frame.number() * kapi::memory::frame::size; + auto mapped_ptr = mmap(virtual_target, kapi::memory::page::size.value, PROT_READ | PROT_WRITE, + MAP_SHARED | MAP_FIXED, memory.memory_descriptor(), physical_offset.value); + if (mapped_ptr == MAP_FAILED) + { + throw std::runtime_error("Failed to map page"); + } + + return static_cast<std::byte *>(mapped_ptr); + } + else if (page_address >= kapi::memory::mmio_base) + { + throw std::runtime_error("MMIO mapping not yet supported in testing!"); } else if (page_address >= kapi::memory::higher_half_direct_map_base) { |