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[x86_64] Add support for compilation as an x86_64 binary

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Currently the only supported platform for x86_64 is EFI.

Building an EFI64 gPXE requires a version of gcc that supports
__attribute__((ms_abi)).  This currently means a development build of
gcc; the feature should be present when gcc 4.4 is released.

In the meantime; you can grab a suitable gcc tree from

  git://git.etherboot.org/scm/people/mcb30/gcc/.git
This commit is contained in:
Michael Brown
2008-11-18 14:30:37 -08:00
parent b0d2c9a4d5
commit ce0a0ccf5c
34 changed files with 997 additions and 51 deletions
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35
src/include/byteswap.h
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@@ -4,6 +4,41 @@
#include "endian.h"
#include "bits/byteswap.h"
#define __bswap_constant_16(x) \
((uint16_t)((((uint16_t)(x) & 0x00ff) << 8) | \
(((uint16_t)(x) & 0xff00) >> 8)))
#define __bswap_constant_32(x) \
((uint32_t)((((uint32_t)(x) & 0x000000ffU) << 24) | \
(((uint32_t)(x) & 0x0000ff00U) << 8) | \
(((uint32_t)(x) & 0x00ff0000U) >> 8) | \
(((uint32_t)(x) & 0xff000000U) >> 24)))
#define __bswap_constant_64(x) \
((uint64_t)((((uint64_t)(x) & 0x00000000000000ffULL) << 56) | \
(((uint64_t)(x) & 0x000000000000ff00ULL) << 40) | \
(((uint64_t)(x) & 0x0000000000ff0000ULL) << 24) | \
(((uint64_t)(x) & 0x00000000ff000000ULL) << 8) | \
(((uint64_t)(x) & 0x000000ff00000000ULL) >> 8) | \
(((uint64_t)(x) & 0x0000ff0000000000ULL) >> 24) | \
(((uint64_t)(x) & 0x00ff000000000000ULL) >> 40) | \
(((uint64_t)(x) & 0xff00000000000000ULL) >> 56)))
#define __bswap_16(x) \
((uint16_t)(__builtin_constant_p(x) ? \
__bswap_constant_16(x) : \
__bswap_variable_16(x)))
#define __bswap_32(x) \
((uint32_t)(__builtin_constant_p(x) ? \
__bswap_constant_32(x) : \
__bswap_variable_32(x)))
#define __bswap_64(x) \
((uint64_t)(__builtin_constant_p(x) ? \
__bswap_constant_64(x) : \
__bswap_variable_64(x)))
#if __BYTE_ORDER == __LITTLE_ENDIAN
#include "little_bswap.h"
#endif