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70 lines
1.2 KiB
C++
70 lines
1.2 KiB
C++
// ABI-specific routines.
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#ifndef RUST_ABI_H
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#define RUST_ABI_H
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#include <cstdlib>
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#include <string>
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#include <vector>
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#include <stdint.h>
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#ifdef __WIN32__
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#include <windows.h>
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#else
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#include <dlfcn.h>
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#endif
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template<typename T>
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class weak_symbol {
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private:
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bool init;
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T *data;
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const char *name;
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void fill() {
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if (init)
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return;
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#ifdef __WIN32__
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data = (T *)GetProcAddress(GetModuleHandle(NULL), name);
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#else
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data = (T *)dlsym(RTLD_DEFAULT, name);
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#endif
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init = true;
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}
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public:
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weak_symbol(const char *in_name)
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: init(false), data(NULL), name(in_name) {}
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T *&operator*() { fill(); return data; }
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};
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namespace stack_walk {
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struct frame {
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uint8_t *bp; // The frame pointer.
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void (*ra)(); // The return address.
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frame(void *in_bp, void (*in_ra)()) : bp((uint8_t *)in_bp), ra(in_ra) {}
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inline void next() {
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ra = *(void (**)())(bp + sizeof(void *));
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bp = *(uint8_t **)bp;
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}
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std::string symbol() const;
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};
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std::vector<frame> backtrace();
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std::string symbolicate(const std::vector<frame> &frames);
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} // end namespace stack_walk
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uint32_t get_abi_version();
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#endif
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