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| author | Dennis Brentjes <d.brentjes@gmail.com> | 2016-09-19 17:38:23 +0200 |
|---|---|---|
| committer | Dennis Brentjes <d.brentjes@gmail.com> | 2016-10-04 22:18:23 +0200 |
| commit | c29ae7a65c636b8d1fa37c6589278dcdee97658f (patch) | |
| tree | a0ad6583a1f954a179349e0b27d58d7c945c59b5 /emulate/cpustate.hpp | |
| parent | abd5cfdd4a6c8e9979b2deb3c48304fb3d63a44c (diff) | |
| download | openwar-c29ae7a65c636b8d1fa37c6589278dcdee97658f.tar.gz openwar-c29ae7a65c636b8d1fa37c6589278dcdee97658f.tar.bz2 openwar-c29ae7a65c636b8d1fa37c6589278dcdee97658f.zip | |
Started working on a x86 emulator.
Diffstat (limited to 'emulate/cpustate.hpp')
| -rw-r--r-- | emulate/cpustate.hpp | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/emulate/cpustate.hpp b/emulate/cpustate.hpp new file mode 100644 index 0000000..fb9c377 --- /dev/null +++ b/emulate/cpustate.hpp @@ -0,0 +1,77 @@ +#pragma once + +#include <iostream> +#include <array> +#include <bitset> + +#define REGISTER1( NAME ) \ +private: \ + alignas(4) std::array<uint8_t,4> NAME##_storage = {{0,0,0,0}}; \ +public: \ + uint32_t& e##NAME##x() { \ + return *reinterpret_cast<uint32_t*>(NAME##_storage.data()); \ + } \ + \ + uint16_t& NAME##x() { \ + return *reinterpret_cast<uint16_t*>(NAME##_storage.data()); \ + } \ + \ + uint8_t& NAME##h() { \ + return *reinterpret_cast<uint8_t*>(NAME##_storage.data()+1); \ + } \ + \ + uint8_t& NAME##l() { \ + return *reinterpret_cast<uint8_t*>(NAME##_storage.data()); \ + } \ + +#define REGISTER2( NAME ) \ +private: \ + alignas(4) std::array<uint8_t,4> NAME##_storage = {{0,0,0,0}}; \ +public: \ + uint32_t& e##NAME() { \ + return *reinterpret_cast<uint32_t*>(NAME##_storage.data()); \ + } \ + \ + uint16_t& NAME() { \ + return *reinterpret_cast<uint16_t*>(NAME##_storage.data()); \ + } \ + +#define EFLAGS \ +private: \ + alignas(8) std::bitset<32> storage = 2; \ +public: \ + using ref = std::bitset<32>::reference; \ + ref cf() { return storage[0]; } \ + ref pf() { return storage[2]; } \ + ref af() { return storage[4]; } \ + ref zf() { return storage[6]; } \ + ref sf() { return storage[7]; } \ + ref tf() { return storage[8]; } \ + ref intf() { return storage[9]; } \ + ref df() { return storage[10]; } \ + ref of() { return storage[11]; } \ + /*TODO: iopl*/ \ + ref nt() { return storage[14]; } \ + ref rf() { return storage[16]; } \ + ref vm() { return storage[17]; } \ + ref ac() { return storage[18]; } \ + ref vif() { return storage[19]; } \ + ref vip() { return storage[20]; } \ + ref id() { return storage[21]; } \ + +struct CpuState { + REGISTER2(ip) + REGISTER1(a) + REGISTER1(c) + REGISTER1(d) + REGISTER1(b) + REGISTER2(sp) + REGISTER2(bp) + REGISTER2(si) + REGISTER2(di) + EFLAGS +}; + +#undef REGISTER1 +#undef REGISTER2 +#undef EFLAGS
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