530d68ba19
Signed-off-by: Peter Jones <pjones@redhat.com> Signed-off-by: Nigel Croxon <nigel.croxon@hp.com>
146 lines
4.3 KiB
C
146 lines
4.3 KiB
C
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#include <stdint.h>
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/*
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* This prevents GCC from emitting GOT based relocations, and use R_ARM_REL32
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* relative relocations instead, which are more suitable for static binaries.
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*/
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#pragma GCC visibility push (hidden)
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//
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// Basic EFI types of various widths
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//
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#ifndef __WCHAR_TYPE__
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# define __WCHAR_TYPE__ short
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#endif
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typedef uint64_t UINT64;
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typedef int64_t INT64;
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typedef uint32_t UINT32;
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typedef int32_t INT32;
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typedef uint16_t UINT16;
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typedef int16_t INT16;
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typedef uint8_t UINT8;
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typedef int8_t INT8;
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typedef __WCHAR_TYPE__ WCHAR;
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#undef VOID
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#define VOID void
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typedef int32_t INTN;
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typedef uint32_t UINTN;
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#define EFIERR(a) (0x80000000 | a)
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#define EFI_ERROR_MASK 0x80000000
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#define EFIERR_OEM(a) (0xc0000000 | a)
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#define BAD_POINTER 0xFBFBFBFB
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#define MAX_ADDRESS 0xFFFFFFFF
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#define BREAKPOINT() while (TRUE);
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//
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// Pointers must be aligned to these address to function
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//
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#define MIN_ALIGNMENT_SIZE 4
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#define ALIGN_VARIABLE(Value ,Adjustment) \
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(UINTN)Adjustment = 0; \
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if((UINTN)Value % MIN_ALIGNMENT_SIZE) \
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(UINTN)Adjustment = MIN_ALIGNMENT_SIZE - ((UINTN)Value % MIN_ALIGNMENT_SIZE); \
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Value = (UINTN)Value + (UINTN)Adjustment
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//
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// Define macros to build data structure signatures from characters.
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//
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#define EFI_SIGNATURE_16(A,B) ((A) | (B<<8))
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#define EFI_SIGNATURE_32(A,B,C,D) (EFI_SIGNATURE_16(A,B) | (EFI_SIGNATURE_16(C,D) << 16))
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#define EFI_SIGNATURE_64(A,B,C,D,E,F,G,H) (EFI_SIGNATURE_32(A,B,C,D) | ((UINT64)(EFI_SIGNATURE_32(E,F,G,H)) << 32))
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//
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// EFIAPI - prototype calling convention for EFI function pointers
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// BOOTSERVICE - prototype for implementation of a boot service interface
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// RUNTIMESERVICE - prototype for implementation of a runtime service interface
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// RUNTIMEFUNCTION - prototype for implementation of a runtime function that is not a service
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// RUNTIME_CODE - pragma macro for declaring runtime code
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//
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#ifndef EFIAPI // Forces EFI calling conventions reguardless of compiler options
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#define EFIAPI // Substitute expresion to force C calling convention
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#endif
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#define BOOTSERVICE
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#define RUNTIMESERVICE
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#define RUNTIMEFUNCTION
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#define RUNTIME_CODE(a) alloc_text("rtcode", a)
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#define BEGIN_RUNTIME_DATA() data_seg("rtdata")
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#define END_RUNTIME_DATA() data_seg("")
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#define VOLATILE volatile
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#define MEMORY_FENCE __sync_synchronize
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//
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// When build similiar to FW, then link everything together as
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// one big module.
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//
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#define EFI_DRIVER_ENTRY_POINT(InitFunction) \
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UINTN \
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InitializeDriver ( \
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VOID *ImageHandle, \
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VOID *SystemTable \
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) \
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{ \
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return InitFunction(ImageHandle, \
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SystemTable); \
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} \
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\
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EFI_STATUS efi_main( \
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EFI_HANDLE image, \
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EFI_SYSTEM_TABLE *systab \
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) __attribute__((weak, \
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alias ("InitializeDriver")));
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#define LOAD_INTERNAL_DRIVER(_if, type, name, entry) \
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(_if)->LoadInternal(type, name, entry)
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//
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// Some compilers don't support the forward reference construct:
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// typedef struct XXXXX
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//
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// The following macro provide a workaround for such cases.
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#define INTERFACE_DECL(x) struct x
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#define uefi_call_wrapper(func, va_num, ...) func(__VA_ARGS__)
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#define EFI_FUNCTION
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extern UINT64 __DivU64x32(UINT64 Dividend, UINTN Divisor, UINTN *Remainder);
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static inline UINT64 DivU64x32(UINT64 Dividend, UINTN Divisor, UINTN *Remainder)
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{
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if (Dividend >> 32)
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return __DivU64x32(Dividend, Divisor, Remainder);
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/*
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* GCC turns a division into a multiplication and shift with precalculated
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* constants if the divisor is constant and the dividend fits into a 32 bit
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* variable. Otherwise, it will turn this into calls into the 32-bit div
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* library functions.
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*/
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if (Remainder)
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*Remainder = (UINTN)Dividend % Divisor;
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Dividend = (UINTN)Dividend / Divisor;
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return Dividend;
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}
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