Add initial FatELF boot loader support.

Minor arch_elf API improvements

- Renamed arch_elf_score_abi_ident
- Added arch_elf_arch_compat for verifying architecture compatibility between two modules.

Clean up the multiple methods of describing an ELF binary arch.

Use CPUID to determine boot-time long-mode support

When running under an ia32 boot loader, the compile time constants can
not be used to determine x86-64 support. Once the kernel is loaded, we
can assume that 64-bit binaries require a 64-bit kernel -- although
that's not strictly necessary:

Mac OS X supports a 64-bit compatible syscall interface and userspace
execution mode from a 32-bit kernel. That was implemented in large part
to support a 32-bit to 64-bit transition, during which time many
3rd-party kernel extensions had not been updated.

Add _BOOT_MODE arch_elf_score_abi_ident() variant.

Add additional missing ABI compatibility checks.

Implement elf_find_best_fat_arch()

Uses the scoring ABI to find the preferred ELF data.

Fix incorrect declaration

Add arch_elf_score_abi_ident() arch-specific API

Provides scoring of binaries to select preferred binary type,
optionally based on CPU feature detection.

Added missing validity check on relocation address.

Support ELF64 in the kernel.

This has been done by adding typedefs in elf_common.h to the correct ELF
structures for the architecture, and changing all Elf32_* uses to those
types. I don't know whether image loading works as I cannot test it yet,
there may be some 64-bit safety issues around. However, symbol lookup for
the kernel is working correctly.

Moved ELF64 relocation functions to x86 arch_elf.cpp.

Added x86_64 ELF64 relocation functions for the bootloader. All that's left to do now is handle the 64-bit load address properly.

Added an ELF64 version of preloaded_image.

* There is now 2 structures, preloaded_elf32_image and preloaded_elf64_image,
which both inherit from preloaded_image.
* For now I've just hardcoded in use of preloaded_elf32_image, but the
bootloader ELF code will shortly be converted to use templates which use
the appropriate structure. The kernel will be changed later when I add
ELF64 support to it.
* All kernel_args data is now compatible between 32-bit and 64-bit kernels.

*.c -> *.cpp


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34417 a95241bf-73f2-0310-859d-f6bbb57e9c96

Add initial FatELF boot loader support.

Minor arch_elf API improvements

- Renamed arch_elf_score_abi_ident
- Added arch_elf_arch_compat for verifying architecture compatibility between two modules.

Clean up the multiple methods of describing an ELF binary arch.

Use CPUID to determine boot-time long-mode support

When running under an ia32 boot loader, the compile time constants can
not be used to determine x86-64 support. Once the kernel is loaded, we
can assume that 64-bit binaries require a 64-bit kernel -- although
that's not strictly necessary:

Mac OS X supports a 64-bit compatible syscall interface and userspace
execution mode from a 32-bit kernel. That was implemented in large part
to support a 32-bit to 64-bit transition, during which time many
3rd-party kernel extensions had not been updated.

Add _BOOT_MODE arch_elf_score_abi_ident() variant.

Add additional missing ABI compatibility checks.

Implement elf_find_best_fat_arch()

Uses the scoring ABI to find the preferred ELF data.

Fix incorrect declaration

Add arch_elf_score_abi_ident() arch-specific API

Provides scoring of binaries to select preferred binary type,
optionally based on CPU feature detection.

Added missing validity check on relocation address.

Support ELF64 in the kernel.

This has been done by adding typedefs in elf_common.h to the correct ELF
structures for the architecture, and changing all Elf32_* uses to those
types. I don't know whether image loading works as I cannot test it yet,
there may be some 64-bit safety issues around. However, symbol lookup for
the kernel is working correctly.

Moved ELF64 relocation functions to x86 arch_elf.cpp.

Added x86_64 ELF64 relocation functions for the bootloader. All that's left to do now is handle the 64-bit load address properly.

Added an ELF64 version of preloaded_image.

* There is now 2 structures, preloaded_elf32_image and preloaded_elf64_image,
which both inherit from preloaded_image.
* For now I've just hardcoded in use of preloaded_elf32_image, but the
bootloader ELF code will shortly be converted to use templates which use
the appropriate structure. The kernel will be changed later when I add
ELF64 support to it.
* All kernel_args data is now compatible between 32-bit and 64-bit kernels.

*.c -> *.cpp


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34417 a95241bf-73f2-0310-859d-f6bbb57e9c96