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Allocating things in a physical heap. Super wasteful right now.

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This commit is contained in:
Ben Vanik
2013-10-21 00:57:48 -07:00
parent ea022c8dd3
commit aa3e8d0332
3 changed files with 215 additions and 133 deletions
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15
src/xenia/kernel/modules/xboxkrnl/xboxkrnl_memory.cc
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@@ -231,7 +231,7 @@ uint32_t xeMmAllocatePhysicalMemoryEx(
XEASSERT(max_addr_range == 0xFFFFFFFF);
// Allocate.
uint32_t flags = 0;
uint32_t flags = XE_MEMORY_FLAG_PHYSICAL;
uint32_t base_address = xe_memory_heap_alloc(
state->memory(), 0, adjusted_size, flags, alignment);
if (!base_address) {
@@ -239,8 +239,6 @@ uint32_t xeMmAllocatePhysicalMemoryEx(
return 0;
}
// TODO(benvanik): address should be in 0xA0000000+ range.
return base_address;
}
@@ -273,6 +271,9 @@ void xeMmFreePhysicalMemory(uint32_t type, uint32_t base_address) {
// base_address = result of MmAllocatePhysicalMemory.
// Strip off physical bits before passing down.
base_address &= ~0xE0000000;
// TODO(benvanik): free memory.
XELOGE("xeMmFreePhysicalMemory NOT IMPLEMENTED");
//uint32_t size = ?;
@@ -305,6 +306,14 @@ uint32_t xeMmGetPhysicalAddress(uint32_t base_address) {
// physical ones. We could munge up the address here to another mapped view
// of memory.
/*if (protect_bits & X_MEM_LARGE_PAGES) {
base_address |= 0xA0000000;
} else if (protect_bits & X_MEM_16MB_PAGES) {
base_address |= 0xC0000000;
} else {
base_address |= 0xE0000000;
}*/
return base_address;
}