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memory: Dehardcode the use of fixed memory range constants

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The locations of these can actually vary depending on the address space
layout, so we shouldn't be using these when determining where to map
memory or be using them as offsets for calculations. This keeps all the
memory ranges flexible and malleable based off of the virtual memory
manager instance state.
This commit is contained in:
Lioncash 2018-09-24 20:01:45 -04:00
parent 7b36b7d08d
commit 577bde60b5
11 changed files with 60 additions and 75 deletions
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31
src/core/memory.h
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@ -93,11 +93,6 @@ struct PageTable {
/// Virtual user-space memory regions
enum : VAddr {
/// Where the application text, data and bss reside.
PROCESS_IMAGE_VADDR = 0x08000000,
PROCESS_IMAGE_MAX_SIZE = 0x08000000,
PROCESS_IMAGE_VADDR_END = PROCESS_IMAGE_VADDR + PROCESS_IMAGE_MAX_SIZE,
/// Read-only page containing kernel and system configuration values.
CONFIG_MEMORY_VADDR = 0x1FF80000,
CONFIG_MEMORY_SIZE = 0x00001000,
@ -108,36 +103,12 @@ enum : VAddr {
SHARED_PAGE_SIZE = 0x00001000,
SHARED_PAGE_VADDR_END = SHARED_PAGE_VADDR + SHARED_PAGE_SIZE,
/// Area where TLS (Thread-Local Storage) buffers are allocated.
TLS_AREA_VADDR = 0x40000000,
/// TLS (Thread-Local Storage) related.
TLS_ENTRY_SIZE = 0x200,
TLS_AREA_SIZE = 0x10000000,
TLS_AREA_VADDR_END = TLS_AREA_VADDR + TLS_AREA_SIZE,
/// Application stack
STACK_AREA_VADDR = TLS_AREA_VADDR_END,
STACK_AREA_SIZE = 0x10000000,
STACK_AREA_VADDR_END = STACK_AREA_VADDR + STACK_AREA_SIZE,
DEFAULT_STACK_SIZE = 0x100000,
/// Application heap
/// Size is confirmed to be a static value on fw 3.0.0
HEAP_VADDR = 0x108000000,
HEAP_SIZE = 0x180000000,
HEAP_VADDR_END = HEAP_VADDR + HEAP_SIZE,
/// New map region
/// Size is confirmed to be a static value on fw 3.0.0
NEW_MAP_REGION_VADDR = HEAP_VADDR_END,
NEW_MAP_REGION_SIZE = 0x80000000,
NEW_MAP_REGION_VADDR_END = NEW_MAP_REGION_VADDR + NEW_MAP_REGION_SIZE,
/// Map region
/// Size is confirmed to be a static value on fw 3.0.0
MAP_REGION_VADDR = NEW_MAP_REGION_VADDR_END,
MAP_REGION_SIZE = 0x1000000000,
MAP_REGION_VADDR_END = MAP_REGION_VADDR + MAP_REGION_SIZE,
/// Kernel Virtual Address Range
KERNEL_REGION_VADDR = 0xFFFFFF8000000000,
KERNEL_REGION_SIZE = 0x7FFFE00000,