6f77685609
mainly in the kernel and headers. This split based on work by Ingmar Alting <iaalting@cs.vu.nl> done for his Minix PowerPC architecture port. . kernel does not program the interrupt controller directly, do any other architecture-dependent operations, or contain assembly any more, but uses architecture-dependent functions in arch/$(ARCH)/. . architecture-dependent constants and types defined in arch/$(ARCH)/include. . <ibm/portio.h> moved to <minix/portio.h>, as they have become, for now, architecture-independent functions. . int86, sdevio, readbios, and iopenable are now i386-specific kernel calls and live in arch/i386/do_* now. . i386 arch now supports even less 86 code; e.g. mpx86.s and klib86.s have gone, and 'machine.protected' is gone (and always taken to be 1 in i386). If 86 support is to return, it should be a new architecture. . prototypes for the architecture-dependent functions defined in kernel/arch/$(ARCH)/*.c but used in kernel/ are in kernel/proto.h . /etc/make.conf included in makefiles and shell scripts that need to know the building architecture; it defines ARCH=<arch>, currently only i386. . some basic per-architecture build support outside of the kernel (lib) . in clock.c, only dequeue a process if it was ready . fixes for new include files files deleted: . mpx/klib.s - only for choosing between mpx/klib86 and -386 . klib86.s - only for 86 i386-specific files files moved (or arch-dependent stuff moved) to arch/i386/: . mpx386.s (entry point) . klib386.s . sconst.h . exception.c . protect.c . protect.h . i8269.c
28 lines
710 B
C
Executable File
28 lines
710 B
C
Executable File
! Miscellaneous constants used in assembler code.
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W = _WORD_SIZE ! Machine word size.
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! Offsets in struct proc. They MUST match proc.h.
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P_STACKBASE = 0
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GSREG = P_STACKBASE
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FSREG = GSREG + 2 ! 386 introduces FS and GS segments
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ESREG = FSREG + 2
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DSREG = ESREG + 2
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DIREG = DSREG + 2
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SIREG = DIREG + W
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BPREG = SIREG + W
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STREG = BPREG + W ! hole for another SP
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BXREG = STREG + W
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DXREG = BXREG + W
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CXREG = DXREG + W
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AXREG = CXREG + W
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RETADR = AXREG + W ! return address for save() call
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PCREG = RETADR + W
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CSREG = PCREG + W
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PSWREG = CSREG + W
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SPREG = PSWREG + W
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SSREG = SPREG + W
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P_STACKTOP = SSREG + W
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P_LDT_SEL = P_STACKTOP
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P_LDT = P_LDT_SEL + W
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Msize = 9 ! size of a message in 32-bit words
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