From 89ef3ef5752e42d0eb0bdfa23cc72d391db74216 Mon Sep 17 00:00:00 2001 From: Lioncash Date: Tue, 26 Nov 2019 16:06:49 -0500 Subject: core/memory: Migrate over ZeroBlock() and CopyBlock() to the Memory class These currently aren't used anywhere in the codebase, so these are very trivial to move over to the Memory class. --- src/core/memory.h | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 51 insertions(+), 2 deletions(-) (limited to 'src/core/memory.h') diff --git a/src/core/memory.h b/src/core/memory.h index 7cd348b49..fc0013a96 100644 --- a/src/core/memory.h +++ b/src/core/memory.h @@ -169,6 +169,57 @@ public: */ std::string ReadCString(VAddr vaddr, std::size_t max_length); + /** + * Fills the specified address range within a process' address space with zeroes. + * + * @param process The process that will have a portion of its memory zeroed out. + * @param dest_addr The starting virtual address of the range to zero out. + * @param size The size of the address range to zero out, in bytes. + * + * @post The range [dest_addr, size) within the process' address space is + * filled with zeroes. + */ + void ZeroBlock(const Kernel::Process& process, VAddr dest_addr, std::size_t size); + + /** + * Fills the specified address range within the current process' address space with zeroes. + * + * @param dest_addr The starting virtual address of the range to zero out. + * @param size The size of the address range to zero out, in bytes. + * + * @post The range [dest_addr, size) within the current process' address space is + * filled with zeroes. + */ + void ZeroBlock(VAddr dest_addr, std::size_t size); + + /** + * Copies data within a process' address space to another location within the + * same address space. + * + * @param process The process that will have data copied within its address space. + * @param dest_addr The destination virtual address to begin copying the data into. + * @param src_addr The source virtual address to begin copying the data from. + * @param size The size of the data to copy, in bytes. + * + * @post The range [dest_addr, size) within the process' address space contains the + * same data within the range [src_addr, size). + */ + void CopyBlock(const Kernel::Process& process, VAddr dest_addr, VAddr src_addr, + std::size_t size); + + /** + * Copies data within the current process' address space to another location within the + * same address space. + * + * @param dest_addr The destination virtual address to begin copying the data into. + * @param src_addr The source virtual address to begin copying the data from. + * @param size The size of the data to copy, in bytes. + * + * @post The range [dest_addr, size) within the current process' address space + * contains the same data within the range [src_addr, size). + */ + void CopyBlock(VAddr dest_addr, VAddr src_addr, std::size_t size); + /** * Marks each page within the specified address range as cached or uncached. * @@ -206,7 +257,5 @@ void ReadBlock(VAddr src_addr, void* dest_buffer, std::size_t size); void WriteBlock(const Kernel::Process& process, VAddr dest_addr, const void* src_buffer, std::size_t size); void WriteBlock(VAddr dest_addr, const void* src_buffer, std::size_t size); -void ZeroBlock(const Kernel::Process& process, VAddr dest_addr, std::size_t size); -void CopyBlock(VAddr dest_addr, VAddr src_addr, std::size_t size); } // namespace Memory -- cgit v1.2.3