diff --git a/CMakeLists.txt b/CMakeLists.txt
index 02857c0..f7b5290 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -62,6 +62,7 @@ list(APPEND vmprofiler_SOURCES
"src/vmprofiles/nand.cpp"
"src/vmprofiles/nor.cpp"
"src/vmprofiles/read.cpp"
+ "src/vmprofiles/shr.cpp"
"src/vmprofiles/sreg.cpp"
"src/vmprofiles/svsp.cpp"
"src/vmprofiles/write.cpp"
diff --git a/include/vminstrs.hpp b/include/vminstrs.hpp
index d55eda1..ef3c0c9 100644
--- a/include/vminstrs.hpp
+++ b/include/vminstrs.hpp
@@ -149,13 +149,14 @@ extern profiler_t nor;
extern profiler_t read;
extern profiler_t write;
extern profiler_t imul;
+extern profiler_t shr;
///
/// unsorted vector of profiles... they get sorted once at runtime...
///
-inline std::vector profiles = {&imul, &nor, &write, &svsp,
- &read, &nand, &lvsp, &add,
- &jmp, &sreg, &lreg, &lconst};
+inline std::vector profiles = {&shr, &imul, &nor, &write, &svsp,
+ &read, &nand, &lvsp, &add, &jmp,
+ &sreg, &lreg, &lconst};
///
/// no i did not make this by hand, you cannot clown upon me!
diff --git a/src/vmprofiles/shr.cpp b/src/vmprofiles/shr.cpp
new file mode 100644
index 0000000..330f48d
--- /dev/null
+++ b/src/vmprofiles/shr.cpp
@@ -0,0 +1,69 @@
+#include
+
+namespace vm::instrs {
+profiler_t shr = {
+ "SHR",
+ mnemonic_t::shr,
+ {{// MOV REG, [VSP]
+ LOAD_VALUE,
+ // MOV REG, [VSP+OFFSET]
+ [&](const zydis_reg_t vip,
+ const zydis_reg_t vsp,
+ const zydis_decoded_instr_t& instr) -> bool {
+ return instr.mnemonic == ZYDIS_MNEMONIC_MOV &&
+ instr.operands[0].type == ZYDIS_OPERAND_TYPE_REGISTER &&
+ instr.operands[1].type == ZYDIS_OPERAND_TYPE_MEMORY &&
+ instr.operands[1].mem.base == vsp &&
+ instr.operands[1].mem.disp.has_displacement;
+ },
+ // SHR REG, REG
+ [&](const zydis_reg_t vip,
+ const zydis_reg_t vsp,
+ const zydis_decoded_instr_t& instr) -> bool {
+ return instr.mnemonic == ZYDIS_MNEMONIC_SHR &&
+ instr.operands[0].type == ZYDIS_OPERAND_TYPE_REGISTER &&
+ instr.operands[1].type == ZYDIS_OPERAND_TYPE_REGISTER;
+ },
+ // MOV [VSP+OFFSET], REG
+ [&](const zydis_reg_t vip,
+ const zydis_reg_t vsp,
+ const zydis_decoded_instr_t& instr) -> bool {
+ return instr.mnemonic == ZYDIS_MNEMONIC_MOV &&
+ instr.operands[0].type == ZYDIS_OPERAND_TYPE_MEMORY &&
+ instr.operands[0].mem.base == vsp &&
+ instr.operands[0].mem.disp.has_displacement &&
+ instr.operands[1].type == ZYDIS_OPERAND_TYPE_REGISTER;
+ },
+ // PUSHFQ
+ [&](const zydis_reg_t vip,
+ const zydis_reg_t vsp,
+ const zydis_decoded_instr_t& instr) -> bool {
+ return instr.mnemonic == ZYDIS_MNEMONIC_PUSHFQ;
+ },
+ // POP [VSP]
+ [&](const zydis_reg_t vip,
+ const zydis_reg_t vsp,
+ const zydis_decoded_instr_t& instr) -> bool {
+ return instr.mnemonic == ZYDIS_MNEMONIC_POP &&
+ instr.operands[0].type == ZYDIS_OPERAND_TYPE_MEMORY &&
+ instr.operands[0].mem.base == vsp;
+ }}},
+ [&](zydis_reg_t& vip,
+ zydis_reg_t& vsp,
+ hndlr_trace_t& hndlr) -> std::optional {
+ vinstr_t res{mnemonic_t::shr};
+ res.imm.has_imm = false;
+
+ const auto shr_reg = std::find_if(
+ hndlr.m_instrs.begin(), hndlr.m_instrs.end(),
+ [&](emu_instr_t& instr) -> bool {
+ const auto& i = instr.m_instr;
+ return i.mnemonic == ZYDIS_MNEMONIC_SHR &&
+ i.operands[0].type == ZYDIS_OPERAND_TYPE_REGISTER &&
+ i.operands[1].type == ZYDIS_OPERAND_TYPE_REGISTER;
+ });
+
+ res.stack_size = shr_reg->m_instr.operands[0].size;
+ return res;
+ }};
+}
\ No newline at end of file