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a6e4995963
Exiting boot services can't actually be done from inside `bootloader_uefi_main`, because there are objects in that scope that run code requiring boot services in their destructors. Also added `support.cpp` with `memcpy` because clang will emit references to `memcpy` even in freestanding mode. Added a `debug_break` function to allow for faking breakpoints when connecting to the bootloader with GDB. Tags: debug
28 lines
695 B
C++
28 lines
695 B
C++
#include <stdint.h>
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#include "error.h"
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extern "C" {
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/// Basic memcpy() implementation for clang. Clang requires freestanding code
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/// implement memcpy(), as it may emit references to it. This basic memcpy is
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/// not the most efficient, but will get linked if no other memcpy exists.
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__attribute__ ((__weak__))
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void *memcpy(void *dest, const void *src, size_t n)
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{
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uint8_t *cdest = reinterpret_cast<uint8_t*>(dest);
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const uint8_t *csrc = reinterpret_cast<const uint8_t*>(src);
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for (size_t i = 0; i < n; ++i)
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cdest[i] = csrc[i];
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return dest;
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}
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int _purecall()
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{
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::boot::error::raise(uefi::status::unsupported, L"Pure virtual call");
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}
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} // extern "C"
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void operator delete (void *) {}
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