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49 lines
2.0 KiB
49 lines
2.0 KiB
#include <vminstrs.hpp>
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namespace vm::instrs {
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profiler_t svsp = {
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"SVSP",
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mnemonic_t::svsp,
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{{// MOV REG, VSP
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[](const zydis_reg_t vip, const zydis_reg_t vsp,
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const zydis_decoded_instr_t& instr) -> bool {
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return instr.mnemonic == ZYDIS_MNEMONIC_MOV &&
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instr.operands[0].type == ZYDIS_OPERAND_TYPE_REGISTER &&
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instr.operands[1].type == ZYDIS_OPERAND_TYPE_REGISTER &&
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instr.operands[1].reg.value == vsp;
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},
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// SUB VSP, OFFSET
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[](const zydis_reg_t vip, const zydis_reg_t vsp,
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const zydis_decoded_instr_t& instr) -> bool {
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return instr.mnemonic == ZYDIS_MNEMONIC_SUB &&
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instr.operands[0].type == ZYDIS_OPERAND_TYPE_REGISTER &&
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instr.operands[0].reg.value == vsp &&
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instr.operands[1].type == ZYDIS_OPERAND_TYPE_IMMEDIATE;
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},
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// MOV [VSP], REG
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[](const zydis_reg_t vip, const zydis_reg_t vsp,
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const zydis_decoded_instr_t& instr) -> bool {
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return instr.mnemonic == ZYDIS_MNEMONIC_MOV &&
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instr.operands[0].type == ZYDIS_OPERAND_TYPE_MEMORY &&
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instr.operands[0].mem.base == vsp &&
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instr.operands[0].mem.disp.has_displacement == false &&
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instr.operands[1].type == ZYDIS_OPERAND_TYPE_REGISTER;
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}}},
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[](zydis_reg_t& vip, zydis_reg_t& vsp,
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hndlr_trace_t& hndlr) -> std::optional<vinstr_t> {
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vinstr_t res{mnemonic_t::lvsp};
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const auto sub_vsp = std::find_if(
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hndlr.m_instrs.begin(), hndlr.m_instrs.end(),
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[&](emu_instr_t& instr) -> bool {
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const auto& i = instr.m_instr;
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return i.mnemonic == ZYDIS_MNEMONIC_SUB &&
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i.operands[0].type == ZYDIS_OPERAND_TYPE_REGISTER &&
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i.operands[0].reg.value == vsp &&
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i.operands[1].type == ZYDIS_OPERAND_TYPE_IMMEDIATE;
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});
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res.imm.has_imm = false;
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res.stack_size = sub_vsp->m_instr.operands[1].imm.value.u;
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return res;
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}};
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} |