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freebsd/sys/conf/files.ia64
Marcel Moolenaar f2c49dd248 Revamp of the syscall path, exception and context handling. The
prime objectives are:
o  Implement a syscall path based on the epc inststruction (see
   sys/ia64/ia64/syscall.s).
o  Revisit the places were we need to save and restore registers
   and define those contexts in terms of the register sets (see
   sys/ia64/include/_regset.h).

Secundairy objectives:
o  Remove the requirement to use contigmalloc for kernel stacks.
o  Better handling of the high FP registers for SMP systems.
o  Switch to the new cpu_switch() and cpu_throw() semantics.
o  Add a good unwinder to reconstruct contexts for the rare
   cases we need to (see sys/contrib/ia64/libuwx)

Many files are affected by this change. Functionally it boils
down to:
o  The EPC syscall doesn't preserve registers it does not need
   to preserve and places the arguments differently on the stack.
   This affects libc and truss.
o  The address of the kernel page directory (kptdir) had to
   be unstaticized for use by the nested TLB fault handler.
   The name has been changed to ia64_kptdir to avoid conflicts.
   The renaming affects libkvm.
o  The trapframe only contains the special registers and the
   scratch registers. For syscalls using the EPC syscall path
   no scratch registers are saved. This affects all places where
   the trapframe is accessed. Most notably the unaligned access
   handler, the signal delivery code and the debugger.
o  Context switching only partly saves the special registers
   and the preserved registers. This affects cpu_switch() and
   triggered the move to the new semantics, which additionally
   affects cpu_throw().
o  The high FP registers are either in the PCB or on some
   CPU. context switching for them is done lazily. This affects
   trap().
o  The mcontext has room for all registers, but not all of them
   have to be defined in all cases. This mostly affects signal
   delivery code now. The *context syscalls are as of yet still
   unimplemented.

Many details went into the removal of the requirement to use
contigmalloc for kernel stacks. The details are mostly CPU
specific and limited to exception_save() and exception_restore().
The few places where we create, destroy or switch stacks were
mostly simplified by not having to construct physical addresses
and additionally saving the virtual addresses for later use.

Besides more efficient context saving and restoring, which of
course yields a noticable speedup, this also fixes the dreaded
SMP bootup problem as a side-effect. The details of which are
still not fully understood.

This change includes all the necessary backward compatibility
code to have it handle older userland binaries that use the
break instruction for syscalls. Support for break-based syscalls
has been pessimized in favor of a clean implementation. Due to
the overall better performance of the kernel, this will still
be notived as an improvement if it's noticed at all.

Approved by: re@ (jhb)
2003-05-16 21:26:42 +00:00

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# This file tells config what files go into building a kernel,
# files marked standard are always included.
#
# $FreeBSD$
#
# The long compile-with and dependency lines are required because of
# limitations in config: backslash-newline doesn't work in strings, and
# dependency lines other than the first are silently ignored.
#
#
font8x16.o optional std8x16font \
compile-with "uudecode < /usr/share/syscons/fonts/${STD8X16FONT}-8x16.fnt && file2c 'unsigned char font_16[16*256] = {' '};' < ${STD8X16FONT}-8x16 > font8x16.c && ${CC} -c ${CFLAGS} font8x16.c" \
no-implicit-rule before-depend \
clean "${STD8X16FONT}-8x16 font8x16.c"
#
atkbdmap.h optional atkbd_dflt_keymap \
compile-with "/usr/sbin/kbdcontrol -L ${ATKBD_DFLT_KEYMAP} | sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /' > atkbdmap.h" \
no-obj no-implicit-rule before-depend \
clean "atkbdmap.h"
#
contrib/ia64/libuwx/src/uwx_bstream.c standard
contrib/ia64/libuwx/src/uwx_context.c standard
contrib/ia64/libuwx/src/uwx_env.c standard
contrib/ia64/libuwx/src/uwx_scoreboard.c standard
#contrib/ia64/libuwx/src/uwx_self.c standard
#contrib/ia64/libuwx/src/uwx_self_context.s standard
contrib/ia64/libuwx/src/uwx_step.c standard
contrib/ia64/libuwx/src/uwx_str.c standard
contrib/ia64/libuwx/src/uwx_swap.c standard
contrib/ia64/libuwx/src/uwx_trace.c standard
#contrib/ia64/libuwx/src/uwx_ttrace.c standard
contrib/ia64/libuwx/src/uwx_uinfo.c standard
contrib/ia64/libuwx/src/uwx_utable.c standard
crypto/blowfish/bf_enc.c optional crypto
crypto/blowfish/bf_enc.c optional ipsec ipsec_esp
crypto/des/des_enc.c optional crypto
crypto/des/des_enc.c optional ipsec ipsec_esp
dev/advansys/adv_isa.c optional adv isa
dev/aic/aic_isa.c optional aic isa
dev/fb/fb.c optional fb
dev/fb/fb.c optional vga
dev/fb/splash.c optional splash
dev/fb/vga.c optional vga
dev/kbd/atkbd.c optional atkbd
dev/kbd/atkbdc.c optional atkbdc
dev/kbd/kbd.c optional atkbd
dev/kbd/kbd.c optional kbd
dev/kbd/kbd.c optional sc
dev/kbd/kbd.c optional ukbd
dev/sio/sio.c optional sio
dev/sio/sio_isa.c optional sio isa
dev/syscons/schistory.c optional sc
dev/syscons/scmouse.c optional sc
dev/syscons/scterm-dumb.c optional sc
dev/syscons/scterm-sc.c optional sc
dev/syscons/scterm.c optional sc
dev/syscons/scvgarndr.c optional sc vga
dev/syscons/scvidctl.c optional sc
dev/syscons/scvtb.c optional sc
dev/syscons/syscons.c optional sc
dev/syscons/sysmouse.c optional sc
geom/geom_bsd.c standard
geom/geom_bsd_enc.c standard
geom/geom_gpt.c standard
geom/geom_mbr.c standard
geom/geom_mbr_enc.c standard
ia64/acpica/OsdEnvironment.c optional acpi
ia64/acpica/acpi_machdep.c optional acpi
ia64/acpica/acpi_wakeup.c optional acpi
ia64/acpica/madt.c optional acpi
ia64/ia32/ia32_misc.c optional ia32
ia64/ia32/ia32_sysent.c optional ia32
ia64/ia32/ia32_sysvec.c optional ia32
ia64/ia64/autoconf.c standard
ia64/ia64/busdma_machdep.c standard
ia64/ia64/clock.c standard
ia64/ia64/clock_if.m standard
ia64/ia64/context.s standard
ia64/ia64/critical.c standard
ia64/ia64/db_disasm.c optional ddb
ia64/ia64/db_interface.c optional ddb
ia64/ia64/db_trace.c optional ddb
ia64/ia64/dump_machdep.c standard
ia64/ia64/efi.c standard
ia64/ia64/eficlock.c standard
ia64/ia64/elf_machdep.c standard
ia64/ia64/exception.s standard
ia64/ia64/ia64-gdbstub.c optional ddb
ia64/ia64/in_cksum.c optional inet
ia64/ia64/interrupt.c standard
ia64/ia64/locore.s standard no-obj
ia64/ia64/machdep.c standard
ia64/ia64/mca.c standard
ia64/ia64/mem.c standard
ia64/ia64/mp_machdep.c optional smp
ia64/ia64/nexus.c standard
ia64/ia64/pal.s standard
ia64/ia64/pmap.c standard
ia64/ia64/sal.c standard
ia64/ia64/sapic.c standard
ia64/ia64/setjmp.s standard
ia64/ia64/ssc.c optional ski
ia64/ia64/sscdisk.c optional ski
ia64/ia64/support.s standard
ia64/ia64/sys_machdep.c standard
ia64/ia64/syscall.s standard
ia64/ia64/trap.c standard
ia64/ia64/unaligned.c standard
ia64/ia64/unwind.c standard
ia64/ia64/vm_machdep.c standard
ia64/isa/isa.c optional isa
ia64/isa/isa_dma.c optional isa
ia64/pci/pci_cfgreg.c optional pci
isa/atkbd_isa.c optional atkbd
isa/atkbdc_isa.c optional atkbdc
isa/fd.c optional fdc
isa/ppc.c optional ppc
isa/psm.c optional psm
isa/syscons_isa.c optional sc
isa/vga_isa.c optional vga
kern/imgact_elf32.c optional ia32
libkern/bcmp.c standard
libkern/ffs.c standard
libkern/ia64/__divdi3.S standard
libkern/ia64/__divsi3.S standard
libkern/ia64/__moddi3.S standard
libkern/ia64/__modsi3.S standard
libkern/ia64/__udivdi3.S standard
libkern/ia64/__udivsi3.S standard
libkern/ia64/__umoddi3.S standard
libkern/ia64/__umodsi3.S standard
libkern/ia64/bswap16.S standard
libkern/ia64/bswap32.S standard