summaryrefslogtreecommitdiffstats
path: root/src/core/hle/kernel/svc.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/core/hle/kernel/svc.cpp')
-rw-r--r--src/core/hle/kernel/svc.cpp50
1 files changed, 20 insertions, 30 deletions
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp
index 250ef9042..4362508a3 100644
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -168,6 +168,9 @@ constexpr bool IsValidSetMemoryPermission(MemoryPermission perm) {
static ResultCode SetMemoryPermission(Core::System& system, VAddr address, u64 size,
MemoryPermission perm) {
+ LOG_DEBUG(Kernel_SVC, "called, address=0x{:016X}, size=0x{:X}, perm=0x{:08X", address, size,
+ perm);
+
// Validate address / size.
R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress);
R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
@@ -186,46 +189,33 @@ static ResultCode SetMemoryPermission(Core::System& system, VAddr address, u64 s
}
static ResultCode SetMemoryAttribute(Core::System& system, VAddr address, u64 size, u32 mask,
- u32 attribute) {
+ u32 attr) {
LOG_DEBUG(Kernel_SVC,
"called, address=0x{:016X}, size=0x{:X}, mask=0x{:08X}, attribute=0x{:08X}", address,
- size, mask, attribute);
-
- if (!Common::Is4KBAligned(address)) {
- LOG_ERROR(Kernel_SVC, "Address not page aligned (0x{:016X})", address);
- return ResultInvalidAddress;
- }
+ size, mask, attr);
- if (size == 0 || !Common::Is4KBAligned(size)) {
- LOG_ERROR(Kernel_SVC, "Invalid size (0x{:X}). Size must be non-zero and page aligned.",
- size);
- return ResultInvalidAddress;
- }
-
- if (!IsValidAddressRange(address, size)) {
- LOG_ERROR(Kernel_SVC, "Address range overflowed (Address: 0x{:016X}, Size: 0x{:016X})",
- address, size);
- return ResultInvalidCurrentMemory;
- }
+ // Validate address / size.
+ R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress);
+ R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
+ R_UNLESS(size > 0, ResultInvalidSize);
+ R_UNLESS((address < address + size), ResultInvalidCurrentMemory);
- const auto attributes{static_cast<MemoryAttribute>(mask | attribute)};
- if (attributes != static_cast<MemoryAttribute>(mask) ||
- (attributes | MemoryAttribute::Uncached) != MemoryAttribute::Uncached) {
- LOG_ERROR(Kernel_SVC,
- "Memory attribute doesn't match the given mask (Attribute: 0x{:X}, Mask: {:X}",
- attribute, mask);
- return ResultInvalidCombination;
- }
+ // Validate the attribute and mask.
+ constexpr u32 SupportedMask = static_cast<u32>(MemoryAttribute::Uncached);
+ R_UNLESS((mask | attr) == mask, ResultInvalidCombination);
+ R_UNLESS((mask | attr | SupportedMask) == SupportedMask, ResultInvalidCombination);
+ // Validate that the region is in range for the current process.
auto& page_table{system.Kernel().CurrentProcess()->PageTable()};
+ R_UNLESS(page_table.Contains(address, size), ResultInvalidCurrentMemory);
- return page_table.SetMemoryAttribute(address, size, static_cast<KMemoryAttribute>(mask),
- static_cast<KMemoryAttribute>(attribute));
+ // Set the memory attribute.
+ return page_table.SetMemoryAttribute(address, size, mask, attr);
}
static ResultCode SetMemoryAttribute32(Core::System& system, u32 address, u32 size, u32 mask,
- u32 attribute) {
- return SetMemoryAttribute(system, address, size, mask, attribute);
+ u32 attr) {
+ return SetMemoryAttribute(system, address, size, mask, attr);
}
/// Maps a memory range into a different range.