dbe8c2c316
Currently per-function metadata consists of: (start-pc, size, features) This adds a new UAR feature and if it's set an additional element: (start-pc, size, features, stack-args-size) Reviewed By: melver Differential Revision: https://reviews.llvm.org/D136078
76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
#include <assert.h>
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#include <stdint.h>
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#include <stdio.h>
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int main() { printf("main\n"); }
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typedef unsigned long uptr;
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#define FN(X) \
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if (pc == reinterpret_cast<uptr>(X)) \
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return #X
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const char *symbolize(uptr pc) {
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FUNCTIONS;
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return nullptr;
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}
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template <typename T> T consume(const char *&pos, const char *end) {
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T v = *reinterpret_cast<const T *>(pos);
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pos += sizeof(T);
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assert(pos <= end);
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return v;
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}
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uint32_t meta_version;
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const char *meta_start;
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const char *meta_end;
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extern "C" {
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void __sanitizer_metadata_covered_add(uint32_t version, const char *start,
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const char *end) {
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printf("metadata add version %u\n", version);
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for (const char *pos = start; pos < end;) {
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const uptr base = reinterpret_cast<uptr>(pos);
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const long offset = (version & (1 << 16)) ? consume<long>(pos, end)
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: consume<int>(pos, end);
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const uint32_t size = consume<uint32_t>(pos, end);
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const uint32_t features = consume<uint32_t>(pos, end);
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uint32_t stack_args = 0;
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if (features & (1 << 1))
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stack_args = consume<uint32_t>(pos, end);
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if (const char *name = symbolize(base + offset))
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printf("%s: features=%x stack_args=%u\n", name, features, stack_args);
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}
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meta_version = version;
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meta_start = start;
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meta_end = end;
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}
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void __sanitizer_metadata_covered_del(uint32_t version, const char *start,
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const char *end) {
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assert(version == meta_version);
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assert(start == meta_start);
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assert(end == meta_end);
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}
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const char *atomics_start;
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const char *atomics_end;
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void __sanitizer_metadata_atomics_add(uint32_t version, const char *start,
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const char *end) {
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assert(version == meta_version);
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assert(start);
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assert(end >= end);
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atomics_start = start;
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atomics_end = end;
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}
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void __sanitizer_metadata_atomics_del(uint32_t version, const char *start,
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const char *end) {
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assert(version == meta_version);
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assert(atomics_start == start);
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assert(atomics_end == end);
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}
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}
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