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boot: Use uintptr_t when converting EFI_PHYSICAL_ADDRESS

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uintptr_t is the more appropriate type when casting to/from pointers.
This commit is contained in:
Jan Janssen 2022-07-12 09:43:13 +02:00
parent 12a233265d
commit 34938db5b3
1 changed files with 4 additions and 10 deletions
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14
src/boot/efi/util.h
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@ -144,22 +144,16 @@ EFI_STATUS open_directory(EFI_FILE *root_dir, const char16_t *path, EFI_FILE **r
/* Conversion between EFI_PHYSICAL_ADDRESS and pointers is not obvious. The former is always 64bit, even on
* 32bit archs. And gcc complains if we cast a pointer to an integer of a different size. Hence let's do the
* conversion indirectly: first into UINTN (which is defined by UEFI to have the same size as a pointer), and
* then extended to EFI_PHYSICAL_ADDRESS. */
* conversion indirectly: first into uintptr_t and then extended to EFI_PHYSICAL_ADDRESS. */
static inline EFI_PHYSICAL_ADDRESS POINTER_TO_PHYSICAL_ADDRESS(const void *p) {
return (EFI_PHYSICAL_ADDRESS) (UINTN) p;
return (EFI_PHYSICAL_ADDRESS) (uintptr_t) p;
}
static inline void *PHYSICAL_ADDRESS_TO_POINTER(EFI_PHYSICAL_ADDRESS addr) {
#if __SIZEOF_POINTER__ == 4
/* On 32bit systems the address might not be convertible (as pointers are 32bit but
* EFI_PHYSICAL_ADDRESS 64bit) */
assert(addr <= UINT32_MAX);
#elif __SIZEOF_POINTER__ != 8
#error "Unexpected pointer size"
#endif
return (void*) (UINTN) addr;
assert(addr <= UINTPTR_MAX);
return (void *) (uintptr_t) addr;
}
uint64_t get_os_indications_supported(void);