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fuzz_arm: Add fuzzing for thumb instructions

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This commit is contained in:
MerryMage 2021-02-06 21:25:08 +00:00
parent 8b612edb75
commit 331a02e02e
3 changed files with 172 additions and 36 deletions
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12
tests/fuzz_util.cpp
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@ -35,10 +35,16 @@ u32 RandomFpcr() {
}
InstructionGenerator::InstructionGenerator(const char* format){
ASSERT(std::strlen(format) == 32);
const size_t format_len = std::strlen(format);
ASSERT(format_len == 16 || format_len == 32);
for (int i = 0; i < 32; i++) {
const u32 bit = 1u << (31 - i);
if (format_len == 16) {
// Begin with 16 zeros
mask |= 0xFFFF0000;
}
for (size_t i = 0; i < format_len; i++) {
const u32 bit = 1u << (format_len - i - 1);
switch (format[i]) {
case '0':
mask |= bit;