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Use uintptr_t instead of addr_t

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They're never actually going to change independently, and it's also
brining in kutil headers more places than they should be.
This commit is contained in:
Justin C. Miller
2018-09-20 09:37:30 -07:00
parent a9d72b8102
commit cef0a71bce
20 changed files with 108 additions and 112 deletions
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41
src/kernel/page_manager.h
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@@ -5,7 +5,6 @@
#include <stddef.h>
#include <stdint.h>
#include "kutil/memory.h"
#include "kutil/enum_bitfields.h"
#include "kutil/linked_list.h"
#include "kutil/slab_allocator.h"
@@ -25,13 +24,13 @@ public:
static const size_t page_size = 0x1000;
/// Start of the higher half.
static const addr_t high_offset = 0xffffff0000000000;
static const uintptr_t high_offset = 0xffffff0000000000;
/// Offset from physical where page tables are mapped.
static const addr_t page_offset = 0xffffff8000000000;
static const uintptr_t page_offset = 0xffffff8000000000;
/// Initial process thread's stack address
static const addr_t initial_stack = 0x0000800000000000;
static const uintptr_t initial_stack = 0x0000800000000000;
/// Initial process thread's stack size, in pages
static const unsigned initial_stack_pages = 1;
@@ -50,7 +49,7 @@ public:
/// \returns A pointer to the current PML4 table.
static inline page_table * get_pml4()
{
addr_t pml4 = 0;
uintptr_t pml4 = 0;
__asm__ __volatile__ ( "mov %%cr3, %0" : "=r" (pml4) );
return reinterpret_cast<page_table *>((pml4 & ~0xfffull) + page_offset);
}
@@ -59,7 +58,7 @@ public:
/// \arg pml4 A pointer to the PML4 table to install.
static inline void set_pml4(page_table *pml4)
{
addr_t p = reinterpret_cast<addr_t>(pml4) - page_offset;
uintptr_t p = reinterpret_cast<uintptr_t>(pml4) - page_offset;
__asm__ __volatile__ ( "mov %0, %%cr3" :: "r" (p & ~0xfffull) );
}
@@ -77,7 +76,7 @@ public:
/// \arg user True is this memory is user-accessible
/// \arg pml4 The pml4 to map into - null for the current one
/// \returns A pointer to the start of the mapped region
void * map_pages(addr_t address, size_t count, bool user = false, page_table *pml4 = nullptr);
void * map_pages(uintptr_t address, size_t count, bool user = false, page_table *pml4 = nullptr);
/// Allocate and map contiguous pages into virtual memory, with
/// a constant offset from their physical address.
@@ -99,15 +98,15 @@ public:
/// Get the physical address of an offset-mapped pointer
/// \arg p Virtual address of memory that has been offset-mapped
/// \returns Physical address of the memory pointed to by p
inline addr_t offset_phys(void *p) const
inline uintptr_t offset_phys(void *p) const
{
return reinterpret_cast<addr_t>(kutil::offset_pointer(p, -page_offset));
return reinterpret_cast<uintptr_t>(kutil::offset_pointer(p, -page_offset));
}
/// Get the virtual address of an offset-mapped physical address
/// \arg a Physical address of memory that has been offset-mapped
/// \returns Virtual address of the memory at address a
inline void * offset_virt(addr_t a) const
inline void * offset_virt(uintptr_t a) const
{
return kutil::offset_pointer(reinterpret_cast<void *>(a), page_offset);
}
@@ -172,8 +171,8 @@ private:
/// \art user True if this is a userspace mapping
void page_in(
page_table *pml4,
addr_t phys_addr,
addr_t virt_addr,
uintptr_t phys_addr,
uintptr_t virt_addr,
size_t count,
bool user = false);
@@ -183,7 +182,7 @@ private:
/// \arg count The number of pages to unmap
void page_out(
page_table *pml4,
addr_t virt_addr,
uintptr_t virt_addr,
size_t count);
/// Get free pages from the free list. Only pages from the first free block
@@ -192,7 +191,7 @@ private:
/// \arg count The maximum number of pages to get
/// \arg address [out] The address of the first page
/// \returns The number of pages retrieved
size_t pop_pages(size_t count, addr_t *address);
size_t pop_pages(size_t count, uintptr_t *address);
page_table *m_kernel_pml4; ///< The PML4 of just kernel pages
@@ -235,17 +234,17 @@ IS_BITFIELD(page_block_flags);
/// linked list of such structures.
struct page_block
{
addr_t physical_address;
addr_t virtual_address;
uintptr_t physical_address;
uintptr_t virtual_address;
uint32_t count;
page_block_flags flags;
inline bool has_flag(page_block_flags f) const { return bitfield_has(flags, f); }
inline addr_t physical_end() const { return physical_address + (count * page_manager::page_size); }
inline addr_t virtual_end() const { return virtual_address + (count * page_manager::page_size); }
inline uintptr_t physical_end() const { return physical_address + (count * page_manager::page_size); }
inline uintptr_t virtual_end() const { return virtual_address + (count * page_manager::page_size); }
inline bool contains(addr_t vaddr) const { return vaddr >= virtual_address && vaddr < virtual_end(); }
inline bool contains_physical(addr_t addr) const { return addr >= physical_address && addr < physical_end(); }
inline bool contains(uintptr_t vaddr) const { return vaddr >= virtual_address && vaddr < virtual_end(); }
inline bool contains_physical(uintptr_t addr) const { return addr >= physical_address && addr < physical_end(); }
/// Helper to zero out a block and optionally set the next pointer.
void zero();
@@ -318,7 +317,7 @@ template <typename T> inline T
page_align(T p)
{
return reinterpret_cast<T>(
((reinterpret_cast<addr_t>(p) - 1) & ~(page_manager::page_size - 1))
((reinterpret_cast<uintptr_t>(p) - 1) & ~(page_manager::page_size - 1))
+ page_manager::page_size);
}