mirror of
https://github.com/HIllya51/LunaHook.git
synced 2024-10-22 23:18:16 +08:00
164 lines
2.5 KiB
C++
164 lines
2.5 KiB
C++
#pragma once
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enum class regs
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{
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_flags,
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#ifndef _WIN64
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eax,
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ecx,
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edx,
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ebx,
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esp,
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ebp,
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esi,
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edi,
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flags,
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#else
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rax,
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rbx,
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rcx,
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rdx,
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rsp,
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rbp,
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rsi,
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rdi,
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r8,
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r9,
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r10,
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r11,
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r12,
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r13,
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r14,
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r15,
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#endif
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invalid
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};
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inline int get_stack(int s)
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{
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#ifdef _WIN64
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return s * 8;
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#else
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return s * 4;
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#endif
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}
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inline int get_reg(regs reg)
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{
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#ifdef _WIN64
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return -8 * (int)reg - 8;
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#else
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return -4 - (int)reg * 4;
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#endif
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}
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inline uintptr_t regof(regs reg, hook_stack *stack)
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{
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switch (reg)
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{
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#ifndef _WIN64
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case regs::eax:
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return stack->eax;
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case regs::ecx:
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return stack->ecx;
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case regs::edx:
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return stack->edx;
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case regs::ebx:
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return stack->ebx;
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case regs::esp:
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return stack->esp;
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case regs::ebp:
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return stack->ebp;
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case regs::esi:
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return stack->esi;
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case regs::edi:
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return stack->edi;
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#else
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case regs::rax:
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return stack->rax;
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case regs::rbx:
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return stack->rbx;
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case regs::rcx:
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return stack->rcx;
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case regs::rdx:
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return stack->rdx;
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case regs::rsp:
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return stack->rsp;
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case regs::rbp:
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return stack->rbp;
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case regs::rsi:
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return stack->rsi;
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case regs::rdi:
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return stack->rdi;
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case regs::r8:
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return stack->r8;
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case regs::r9:
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return stack->r9;
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case regs::r10:
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return stack->r10;
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case regs::r11:
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return stack->r11;
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case regs::r12:
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return stack->r12;
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case regs::r13:
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return stack->r13;
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case regs::r14:
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return stack->r14;
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case regs::r15:
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return stack->r15;
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#endif
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}
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return 0;
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}
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#ifndef _WIN64
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#define ARG1 stack[1]
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#define ARG2 stack[2]
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#define ARG3 stack[3]
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#define LASTRETVAL eax
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#define THISCALL __thiscall
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#define THISCALLTHIS ecx
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#define THISCALLARG1 stack[1]
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#define GETARG1 get_stack(1)
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#define GETARG2 get_stack(2)
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#define GETARG3 get_stack(3)
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#define GETARG4 get_stack(4)
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#else
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#define ARG1 rcx
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#define ARG2 rdx
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#define ARG3 r8
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#define LASTRETVAL rax
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#define THISCALLTHIS rcx
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#define THISCALLARG1 rdx
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#define THISCALL
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#define GETARG1 get_reg(regs::rcx)
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#define GETARG2 get_reg(regs::rdx)
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#define GETARG3 get_reg(regs::r8)
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#define GETARG4 get_reg(regs::r9)
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#endif
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inline uintptr_t *argidx(hook_stack *stack, int idx)
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{
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#ifdef _WIN64
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auto offset = 0;
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switch (idx)
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{
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case 1:
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offset = get_reg(regs::rcx);
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break;
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case 2:
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offset = get_reg(regs::rdx);
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break;
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case 3:
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offset = get_reg(regs::r8);
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break;
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case 4:
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offset = get_reg(regs::r9);
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break;
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default:
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offset = get_stack(idx);
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}
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return (uintptr_t *)((uintptr_t)stack + sizeof(hook_stack) - sizeof(uintptr_t) + offset);
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#else
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return (uintptr_t *)((uintptr_t)stack + sizeof(hook_stack) - sizeof(uintptr_t) + get_stack(idx));
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#endif
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} |