forked from Lephenixnoir/fxos
70 lines
1.5 KiB
C++
70 lines
1.5 KiB
C++
//---
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// fxos.os: Operating system models and primitives
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//---
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#ifndef LIBFXOS_OS_H
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#define LIBFXOS_OS_H
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#include <fxos/target.h>
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#include <fxos/util.h>
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#include <vector>
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#include <map>
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namespace FxOS {
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class OS
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{
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public:
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/* Load an OS from a file. */
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OS(File &file);
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/* Get OS version */
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std::string version() const noexcept;
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/* Get number of syscalls */
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int syscall_count() const noexcept;
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/* Get a syscall entry */
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uint32_t syscall(int id) const;
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/* Find a syscall entry. Returns -1 if syscall is not found */
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int find_syscall(uint32_t entry) const noexcept;
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/* Get the footer address. Returns -1 if not found */
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uint32_t footer() const noexcept;
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private:
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/* Determine the OS version. This should be the first analysis function
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to be called, because it determines the type of model (ie. fx9860g
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versus fxcg50) thus the location of the syscall table and many more
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important parameters. */
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void parse_version();
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/* Locate and parse the syscall table. */
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void parse_syscall_table();
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/* Locate the footer */
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void parse_footer();
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/* Working target which is a simulated memory with just the OS */
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Target m_target;
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//---
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// OS information
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//---
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/* Version */
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std::string m_version;
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/* Syscall table, in order of syscall IDs */
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std::vector<uint32_t> m_syscall_table;
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/* Bimap converse, syscalls sorted by address */
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std::map<uint32_t,int> m_syscall_addresses;
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/* Footer address */
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uint32_t m_footer;
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};
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} /* namespace FxOS */
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#endif /* LIBFXOS_OS_H */
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