diff options
Diffstat (limited to 'subx/010---vm.cc')
| -rw-r--r-- | subx/010---vm.cc | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/subx/010---vm.cc b/subx/010---vm.cc index c862ed99..388fb12b 100644 --- a/subx/010---vm.cc +++ b/subx/010---vm.cc @@ -94,8 +94,8 @@ const uint32_t INITIAL_SEGMENT_SIZE = 0x1000 - 1; // Subtract one just so we can start the first segment at address 1 without // overflowing the first segment. Other segments will learn to adjust. -// Like in real-world Linux, we'll allocate RAM for our programs in slabs -// called VMAs or Virtual Memory Areas. +// Like in real-world Linux, we'll allocate RAM for our programs in disjoint +// slabs called VMAs or Virtual Memory Areas. struct vma { uint32_t start; // inclusive uint32_t end; // exclusive @@ -126,6 +126,9 @@ struct vma { :(before "End Globals") // RAM is made of VMAs. +// +// We currently have zero tests for overlapping VMAs. Particularly after +// growing segments. vector<vma> Mem; :(code) // The first 3 VMAs are special. When loading ELF binaries in later layers, |