aarch64.hxx

#pragma once
 
// C++
#include <limits>
 
// clues
#include <clues/regs/RegisterData.hxx>
#include <clues/sysnrs/aarch64.hxx>
 
namespace clues {

struct RegisterDataAARCH64 :
                public RegisterData<uint64_t, 6> {
public: // constants
 
        static constexpr auto NUM_REGS = 34;
 
        SystemCallNrAARCH64 syscallNr() const {
                // w8 (32-bit wide register access) contains the system call
                // number, thus make sure the upper 4 bytes are ignored to be
                // on the safe side.
                return SystemCallNrAARCH64{regs[8] & std::numeric_limits<uint32_t>::max()};
        }
 
        auto syscallRes() const {
                return regs[0];
        }
 
        SystemCallPars syscallPars() const {
                return SystemCallPars{
                        regs[0], regs[1], regs[2], regs[3], regs[4], regs[5]
                };
        }
 
        void clear() {
                cosmos::zero_object(*this);
        }
 
        static auto registerNames() {
                return std::array<const char*, NUM_REGS>({
                        "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7", "x8", "x9", "x10",
                        "x11", "x12", "x13", "x14", "x15", "x16", "x17", "x18", "x19", "x20",
                        "x21", "x22", "x23", "x24", "x25", "x26", "x27", "x28", "x29", "x30",
                        "sp", "pc", "pstate"
                });
        }
 
        auto array() const {
                return std::array<register_t, NUM_REGS>({
                        regs[0], regs[1], regs[2], regs[3], regs[4], regs[5], regs[6], regs[7], regs[8],
                        regs[9], regs[10], regs[11], regs[12], regs[13], regs[14], regs[15], regs[16],
                        regs[17], regs[18], regs[19], regs[20], regs[21], regs[22], regs[23], regs[24],
                        regs[25], regs[26], regs[27], regs[28], regs[29], regs[30],
                        sp, pc, pstate
                });
        }
 
public: // functions
 
public: // data
 
        // this is based on `struct user_pt_regs` found in ptrace.h for arm64.
 
        uint64_t regs[31];
        uint64_t sp;
        uint64_t pc;
        uint64_t pstate;
};
 
} // end ns