build: Define _BOOT_MODE once and for all in ArchitectureRules+BootRules.

Previously it was spread all around the tree, and was not defined
consistently for all boot objects (there were a number of boot modules
which did not define it, but did include headers which checked for it.)

Now, as it is handled in SetupBoot which is invoked for all boot objects,
it will be applied consistently throughout. We can thus drop the manual
additions of it from all Jamfiles.

m68k: add next_m68k boot platform

Since the boot ROM API structure is declared with a custom alignment, we
simulate it with padding bytes around, and use aligntest.prg to verify
using ARAnyM + TOS/MiNT as we know how to link simple PRG files.

It now prints something to the screen then panics when initializing the
heap.

For now one must insert the loader manually into an existing floppy
image:
dd if=generated-m68k/objects/haiku/m68k/release/system/boot/next_m68k/haiku_loader.next_m68k bs=$((0x8000)) seek=1 of=next_floppy.img conv=notrunc

Change-Id: I06d74e9d85a352aab68dedce545bbe5fe9e990d5
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2220
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

m68k: update build to support MultiBootSubDirSetup

Change-Id: Idbbbb089286ad7d76f61993670a20d240bfe773c

Setup -fno-pic or -fpic in Architecture Rules.

EFI boot needs -fpic but all boot code was built with -fno-pic.
This is now set accordingly in HAIKU_BOOT_CCFLAGS and
HAIKU_BOOT_C++FLAGS.

Also setup compile flags for EFI platform.

M68K: More gcc options fixes

Preparation for merge of x86 and x86_64 kernel sources.

Since x86 and x86_64 share a lot of common code, x86_64 kernel sources/headers
are going to reside under headers/private/kernel/arch/x86 and
src/system/kernel/arch/x86 along with the existing x86 code. This commit
changes the build system to handle this. A new variable, TARGET_KERNEL_ARCH,
has been added. This is the name of the kernel/boot architecture directory
name, set to x86 on both x86 and x86_64. This is now used in all places where
TARGET_ARCH was used to get to kernel arch sources/headers (I've changed
everything necessary as far as I can tell). Kernel won't build for x86_64
at the moment as the sources have not been merged, loader does.

Made it possible to build the bootloader when targetting x86_64.

* x86_64 is using the existing *_ia32 boot platforms.
* Special flags are required when compiling the loader to get GCC to compile
32-bit code. This adds a new set of rules for compiling boot code rather
than using the kernel rules, which compile using the necessary flags.
* Some x86_64 private headers have been stubbed by #include'ing the x86
versions. These will be replaced later.

Use cpu-specific mmu code from arch/m68k.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38911 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Implemented x86 assembly version of memset().
* memset() is now available through the commpage.
* CPU modules can provide a model-optimized memset().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27952 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Moved the arch specific stuff in src/system/kernel/lib into arch/...
subdirectories. Also moved the x86 kernel arch_string.S there.
* Moved memcpy.c from src/system/libroot/posix/string into the
arch/generic subdirectory.
* Dealt with the consequences of moving things around. Affected are also
the boot loader and runtime loader builds.

Adjust the m68k and ppc parts, too, but only the x86 build is tested.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27947 a95241bf-73f2-0310-859d-f6bbb57e9c96

forgotten -fno-pic makes arch_elf.cpp give the correct pointers to dprintf instead of garbage.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26560 a95241bf-73f2-0310-859d-f6bbb57e9c96

Seems the ppc way of reusing arch_string.o doesn't work for me.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23374 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged branch haiku/branches/developer/bonefish/optimization revision
23139 into trunk, with roughly the following changes (for details svn
log the branch):
* The int 99 syscall handler is now fully in assembly.
* Added a sysenter/sysexit handler and use it on Pentiums that support
it (via commpage).
* Got rid of i386_handle_trap(). A bit of functionality was moved into
the assembly handler which now uses a jump table to call C functions
handling the respective interrupt.
* Some optimizations to get user debugger support code out of the
interrupt handling path.
* Introduced a thread::flags fields which allows to skip handling of
rare events (signals, user debug enabling/disabling) on the
common interrupt handling path.
* Got rid of the explicit iframe stack. The iframes can still be
retrieved by iterating through the stack frames.
* Made the commpage an architecture independent feature. It's used for
the real time data stuff (instead of creating a separate area).
* The x86 CPU modules can now provide processor optimized versions for
common functions (currently memcpy() only). They are used in the
kernel and are provided to the userland via commpage entries.
* Introduced build system feature allowing easy use of C structure
member offsets in assembly code.

Changes after merging:
* Fixed merge conflict in src/system/kernel/arch/x86/arch_debug.cpp
(caused by refactoring and introduction of "call" debugger command).



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23370 a95241bf-73f2-0310-859d-f6bbb57e9c96

Make use of the kernel's elf loader code instead of duplicating it.
Add placeholder for m68k.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22748 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed "arch" directory, and "makeflop" & "bootmaker" - they are all no longer in use.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14587 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged changes from branch build_system_redesign at revision 14573.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14574 a95241bf-73f2-0310-859d-f6bbb57e9c96

This should fix the build after all the kernel/system renaming.
If anything is still broken (and was not before :)), please shout.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12361 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed src/kernel to src/system.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12359 a95241bf-73f2-0310-859d-f6bbb57e9c96

M68K: More gcc options fixes

Preparation for merge of x86 and x86_64 kernel sources.

Since x86 and x86_64 share a lot of common code, x86_64 kernel sources/headers
are going to reside under headers/private/kernel/arch/x86 and
src/system/kernel/arch/x86 along with the existing x86 code. This commit
changes the build system to handle this. A new variable, TARGET_KERNEL_ARCH,
has been added. This is the name of the kernel/boot architecture directory
name, set to x86 on both x86 and x86_64. This is now used in all places where
TARGET_ARCH was used to get to kernel arch sources/headers (I've changed
everything necessary as far as I can tell). Kernel won't build for x86_64
at the moment as the sources have not been merged, loader does.

Made it possible to build the bootloader when targetting x86_64.

* x86_64 is using the existing *_ia32 boot platforms.
* Special flags are required when compiling the loader to get GCC to compile
32-bit code. This adds a new set of rules for compiling boot code rather
than using the kernel rules, which compile using the necessary flags.
* Some x86_64 private headers have been stubbed by #include'ing the x86
versions. These will be replaced later.

Use cpu-specific mmu code from arch/m68k.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38911 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Implemented x86 assembly version of memset().
* memset() is now available through the commpage.
* CPU modules can provide a model-optimized memset().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27952 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Moved the arch specific stuff in src/system/kernel/lib into arch/...
subdirectories. Also moved the x86 kernel arch_string.S there.
* Moved memcpy.c from src/system/libroot/posix/string into the
arch/generic subdirectory.
* Dealt with the consequences of moving things around. Affected are also
the boot loader and runtime loader builds.

Adjust the m68k and ppc parts, too, but only the x86 build is tested.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27947 a95241bf-73f2-0310-859d-f6bbb57e9c96

forgotten -fno-pic makes arch_elf.cpp give the correct pointers to dprintf instead of garbage.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26560 a95241bf-73f2-0310-859d-f6bbb57e9c96

Seems the ppc way of reusing arch_string.o doesn't work for me.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23374 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged branch haiku/branches/developer/bonefish/optimization revision
23139 into trunk, with roughly the following changes (for details svn
log the branch):
* The int 99 syscall handler is now fully in assembly.
* Added a sysenter/sysexit handler and use it on Pentiums that support
it (via commpage).
* Got rid of i386_handle_trap(). A bit of functionality was moved into
the assembly handler which now uses a jump table to call C functions
handling the respective interrupt.
* Some optimizations to get user debugger support code out of the
interrupt handling path.
* Introduced a thread::flags fields which allows to skip handling of
rare events (signals, user debug enabling/disabling) on the
common interrupt handling path.
* Got rid of the explicit iframe stack. The iframes can still be
retrieved by iterating through the stack frames.
* Made the commpage an architecture independent feature. It's used for
the real time data stuff (instead of creating a separate area).
* The x86 CPU modules can now provide processor optimized versions for
common functions (currently memcpy() only). They are used in the
kernel and are provided to the userland via commpage entries.
* Introduced build system feature allowing easy use of C structure
member offsets in assembly code.

Changes after merging:
* Fixed merge conflict in src/system/kernel/arch/x86/arch_debug.cpp
(caused by refactoring and introduction of "call" debugger command).



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23370 a95241bf-73f2-0310-859d-f6bbb57e9c96

Make use of the kernel's elf loader code instead of duplicating it.
Add placeholder for m68k.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22748 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed "arch" directory, and "makeflop" & "bootmaker" - they are all no longer in use.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14587 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged changes from branch build_system_redesign at revision 14573.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14574 a95241bf-73f2-0310-859d-f6bbb57e9c96

This should fix the build after all the kernel/system renaming.
If anything is still broken (and was not before :)), please shout.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12361 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed src/kernel to src/system.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12359 a95241bf-73f2-0310-859d-f6bbb57e9c96