clang_pattern in smc LLVM IR

clang_pattern.txt

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Jmp to Data Memory. (PIE, NO-PIE 관계 없음.)

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Pattern 1.
clang_m64_smc10.ll

%6 = getelementptr inbounds [24 x i8], [24 x i8]* %2, i64 0, i64 0
%7 = bitcast i8* %6 to void (...)*
call void (...) %7()

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Pattern 2.
clang_m64_smc12.ll

call void (...) bitcast ([8 x i8]* @code to void (...)*)()

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Write Executable Memory. NO-PIE.

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Pattern 3.
clang_m64_smc14.ll

store i64 -8029759185026510704, i64* inttoptr (i64 4195612 to i64*), align 8

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Pattern 4.
clang_m64_smc15.ll

%2 = alloca i64*, align 8
store i64* inttoptr (i64 4195623 to i64*), i64** %2, align 8
%4 = load i64*, i64** %2, align 8
store i64 -8029759185026510704, i64* %4, align 8

================================================================================
Write Executable Memory. PIE

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Pattern 5.
clang_m64_smc16.ll

%2 = alloca i64*, align 8
store i64* bitcast (i8* getelementptr (i8, i8* bitcast (i64* @key to i8*), i64 -2099609) to i64*), i64** %2, align 8
%4 = load i64*, i64** %2, align 8
store i64 -8029759185026510704, i64* %4, align 8

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Pattern 6.
clang_m64_smc17.ll

%2 = alloca i8*, align 8
store i8* getelementptr inbounds (i8, i8* bitcast (i32 ()* @main to i8*), i64 107), i8** %2, align 8
%3 = load i8*, i8** %2, align 8
store i8 -112, i8* %3, align 1