Expose fpu_get_fault_code() even if !PPC_HAVE_FPU, and
adjust it to systems without FPU.

Drop unused opt_multiprocessor.h includes.

Style and cosmetic changes. No binary changes intended.

s/static inline/static __inline/g for consistency.

branches: 1.21.12;
allow pcu_save() and pcu_discard() to be called on other threads,
ptrace needs to use it that way.

branches: 1.20.6; 1.20.10; 1.20.14;
-extend the pcu(9) API by a function which saves all context on the
current CPU, and use it if a CPU is taken offline
-add a bool argument to pcu_discard which tells whether the internal
"LWP has used the coprocessor" flag should be set or reset. The flag
is reported by pcu_used_p(). If set, future accesses should use the
state stored in the PCB. If reset, it should be reset to default.
The former case is useful for setmcontext().
With that, it should not be necessary anymore to manage the "FPU used"
state by an additional MD variable.

approved by matt

branches: 1.19.4; 1.19.14; 1.19.18;
Remove unnecessary Tab.

Move powerpc to use pcu to manage FPU/AltiVec/SPE.

Add support for BookE Freescale MPC85xx (e500 core) processors.
Add fast softint support for PowerPC (though only booke uses it).
Redo FPU/VEC support and add e500 SPE support.
Rework trap/intrs to use a common trapframe format.
Support SOFTFLOAT (no hardfloat or fpu emulation) for BookE.

branches: 1.16.42; 1.16.46; 1.16.48;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.15.14; 1.15.22; 1.15.32; 1.15.34; 1.15.36; 1.15.38;
1st cut of Powermac G5 support (uses bridge mode).

branches: 1.14.4; 1.14.8;
merge ktrace-lwp.

branches: 1.13.12;
Add a SAVE/DISCARD flag to save_{fpu,vec}_lwp. Use it appropriately.
Nuke struct fpu and use struct fpreg instead (except for the names, they
were identical). On MP machines, this will avoid an unneeded IPI to save
the register contents that are about to discarded.

Add int get_fpu_fault_code(void).

branches: 1.11.2;
Make sure to include opt_foo.h if a defflag option FOO is used.

Rename PPC_MPC6XX to PPC_OEA (and any mpc6xx reference to oea).

Merge the nathanw_sa branch.

Change _MACHINE_foo_H_ to _POWERPC_foo_H_

restructure the FPU and AltiVEC code so that it works for MP.

make usable in LKM context (use #if defined(_KERNEL_OPT))

branches: 1.5.8;
fix macppc MULTIPROCESSOR compilation.

branches: 1.4.2; 1.4.8;
Add a port to IBM's PPC405GP Reference Board (the "walnut")
by Eduardo Horvath and Simon Burge of Wasabi Systems.

IBM 4xx series CPU features:
- New pmap and revised trap handler.
- Support on-chip timers, PCI controller, UARTs
- Framework for on-chip ethernet and watchdog timer.
General PowerPC features:
- Add in-kernel PPC floating point emulation
- New in{,4}_cksum that is between 1.5 and 5 times faster than the
old version depending on CPU type.
General changes:
- Kernel support for generic dbsym-style symbols.

branches: 1.3.2;
Build with -Wall -Wetc.

Fix "FPCSR" to "FPSCR". ("Floating Point Status and Control Register")

branches: 1.1.28; 1.1.34;
PowerPC port

Drop unused opt_multiprocessor.h includes.

Style and cosmetic changes. No binary changes intended.

s/static inline/static __inline/g for consistency.

branches: 1.21.12;
allow pcu_save() and pcu_discard() to be called on other threads,
ptrace needs to use it that way.

branches: 1.20.6; 1.20.10; 1.20.14;
-extend the pcu(9) API by a function which saves all context on the
current CPU, and use it if a CPU is taken offline
-add a bool argument to pcu_discard which tells whether the internal
"LWP has used the coprocessor" flag should be set or reset. The flag
is reported by pcu_used_p(). If set, future accesses should use the
state stored in the PCB. If reset, it should be reset to default.
The former case is useful for setmcontext().
With that, it should not be necessary anymore to manage the "FPU used"
state by an additional MD variable.

approved by matt

branches: 1.19.4; 1.19.14; 1.19.18;
Remove unnecessary Tab.

Move powerpc to use pcu to manage FPU/AltiVec/SPE.

Add support for BookE Freescale MPC85xx (e500 core) processors.
Add fast softint support for PowerPC (though only booke uses it).
Redo FPU/VEC support and add e500 SPE support.
Rework trap/intrs to use a common trapframe format.
Support SOFTFLOAT (no hardfloat or fpu emulation) for BookE.

branches: 1.16.42; 1.16.46; 1.16.48;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.15.14; 1.15.22; 1.15.32; 1.15.34; 1.15.36; 1.15.38;
1st cut of Powermac G5 support (uses bridge mode).

branches: 1.14.4; 1.14.8;
merge ktrace-lwp.

branches: 1.13.12;
Add a SAVE/DISCARD flag to save_{fpu,vec}_lwp. Use it appropriately.
Nuke struct fpu and use struct fpreg instead (except for the names, they
were identical). On MP machines, this will avoid an unneeded IPI to save
the register contents that are about to discarded.

Add int get_fpu_fault_code(void).

branches: 1.11.2;
Make sure to include opt_foo.h if a defflag option FOO is used.

Rename PPC_MPC6XX to PPC_OEA (and any mpc6xx reference to oea).

Merge the nathanw_sa branch.

Change _MACHINE_foo_H_ to _POWERPC_foo_H_

restructure the FPU and AltiVEC code so that it works for MP.

make usable in LKM context (use #if defined(_KERNEL_OPT))

branches: 1.5.8;
fix macppc MULTIPROCESSOR compilation.

branches: 1.4.2; 1.4.8;
Add a port to IBM's PPC405GP Reference Board (the "walnut")
by Eduardo Horvath and Simon Burge of Wasabi Systems.

IBM 4xx series CPU features:
- New pmap and revised trap handler.
- Support on-chip timers, PCI controller, UARTs
- Framework for on-chip ethernet and watchdog timer.
General PowerPC features:
- Add in-kernel PPC floating point emulation
- New in{,4}_cksum that is between 1.5 and 5 times faster than the
old version depending on CPU type.
General changes:
- Kernel support for generic dbsym-style symbols.

branches: 1.3.2;
Build with -Wall -Wetc.

Fix "FPCSR" to "FPSCR". ("Floating Point Status and Control Register")

branches: 1.1.28; 1.1.34;
PowerPC port

s/static inline/static __inline/g for consistency.

branches: 1.21.12;
allow pcu_save() and pcu_discard() to be called on other threads,
ptrace needs to use it that way.

branches: 1.20.6; 1.20.10; 1.20.14;
-extend the pcu(9) API by a function which saves all context on the
current CPU, and use it if a CPU is taken offline
-add a bool argument to pcu_discard which tells whether the internal
"LWP has used the coprocessor" flag should be set or reset. The flag
is reported by pcu_used_p(). If set, future accesses should use the
state stored in the PCB. If reset, it should be reset to default.
The former case is useful for setmcontext().
With that, it should not be necessary anymore to manage the "FPU used"
state by an additional MD variable.

approved by matt

branches: 1.19.4; 1.19.14; 1.19.18;
Remove unnecessary Tab.

Move powerpc to use pcu to manage FPU/AltiVec/SPE.

Add support for BookE Freescale MPC85xx (e500 core) processors.
Add fast softint support for PowerPC (though only booke uses it).
Redo FPU/VEC support and add e500 SPE support.
Rework trap/intrs to use a common trapframe format.
Support SOFTFLOAT (no hardfloat or fpu emulation) for BookE.

branches: 1.16.42; 1.16.46; 1.16.48;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.15.14; 1.15.22; 1.15.32; 1.15.34; 1.15.36; 1.15.38;
1st cut of Powermac G5 support (uses bridge mode).

branches: 1.14.4; 1.14.8;
merge ktrace-lwp.

branches: 1.13.12;
Add a SAVE/DISCARD flag to save_{fpu,vec}_lwp. Use it appropriately.
Nuke struct fpu and use struct fpreg instead (except for the names, they
were identical). On MP machines, this will avoid an unneeded IPI to save
the register contents that are about to discarded.

Add int get_fpu_fault_code(void).

branches: 1.11.2;
Make sure to include opt_foo.h if a defflag option FOO is used.

Rename PPC_MPC6XX to PPC_OEA (and any mpc6xx reference to oea).

Merge the nathanw_sa branch.

Change _MACHINE_foo_H_ to _POWERPC_foo_H_

restructure the FPU and AltiVEC code so that it works for MP.

make usable in LKM context (use #if defined(_KERNEL_OPT))

branches: 1.5.8;
fix macppc MULTIPROCESSOR compilation.

branches: 1.4.2; 1.4.8;
Add a port to IBM's PPC405GP Reference Board (the "walnut")
by Eduardo Horvath and Simon Burge of Wasabi Systems.

IBM 4xx series CPU features:
- New pmap and revised trap handler.
- Support on-chip timers, PCI controller, UARTs
- Framework for on-chip ethernet and watchdog timer.
General PowerPC features:
- Add in-kernel PPC floating point emulation
- New in{,4}_cksum that is between 1.5 and 5 times faster than the
old version depending on CPU type.
General changes:
- Kernel support for generic dbsym-style symbols.

branches: 1.3.2;
Build with -Wall -Wetc.

Fix "FPCSR" to "FPSCR". ("Floating Point Status and Control Register")

branches: 1.1.28; 1.1.34;
PowerPC port

allow pcu_save() and pcu_discard() to be called on other threads,
ptrace needs to use it that way.

branches: 1.20.10; 1.20.14;
-extend the pcu(9) API by a function which saves all context on the
current CPU, and use it if a CPU is taken offline
-add a bool argument to pcu_discard which tells whether the internal
"LWP has used the coprocessor" flag should be set or reset. The flag
is reported by pcu_used_p(). If set, future accesses should use the
state stored in the PCB. If reset, it should be reset to default.
The former case is useful for setmcontext().
With that, it should not be necessary anymore to manage the "FPU used"
state by an additional MD variable.

approved by matt

branches: 1.19.4; 1.19.14; 1.19.18;
Remove unnecessary Tab.

Move powerpc to use pcu to manage FPU/AltiVec/SPE.

Add support for BookE Freescale MPC85xx (e500 core) processors.
Add fast softint support for PowerPC (though only booke uses it).
Redo FPU/VEC support and add e500 SPE support.
Rework trap/intrs to use a common trapframe format.
Support SOFTFLOAT (no hardfloat or fpu emulation) for BookE.

branches: 1.16.42; 1.16.46; 1.16.48;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.15.14; 1.15.22; 1.15.32; 1.15.34; 1.15.36; 1.15.38;
1st cut of Powermac G5 support (uses bridge mode).

branches: 1.14.4; 1.14.8;
merge ktrace-lwp.

branches: 1.13.12;
Add a SAVE/DISCARD flag to save_{fpu,vec}_lwp. Use it appropriately.
Nuke struct fpu and use struct fpreg instead (except for the names, they
were identical). On MP machines, this will avoid an unneeded IPI to save
the register contents that are about to discarded.

Add int get_fpu_fault_code(void).

branches: 1.11.2;
Make sure to include opt_foo.h if a defflag option FOO is used.

Rename PPC_MPC6XX to PPC_OEA (and any mpc6xx reference to oea).

Merge the nathanw_sa branch.

Change _MACHINE_foo_H_ to _POWERPC_foo_H_

restructure the FPU and AltiVEC code so that it works for MP.

make usable in LKM context (use #if defined(_KERNEL_OPT))

branches: 1.5.8;
fix macppc MULTIPROCESSOR compilation.

branches: 1.4.2; 1.4.8;
Add a port to IBM's PPC405GP Reference Board (the "walnut")
by Eduardo Horvath and Simon Burge of Wasabi Systems.

IBM 4xx series CPU features:
- New pmap and revised trap handler.
- Support on-chip timers, PCI controller, UARTs
- Framework for on-chip ethernet and watchdog timer.
General PowerPC features:
- Add in-kernel PPC floating point emulation
- New in{,4}_cksum that is between 1.5 and 5 times faster than the
old version depending on CPU type.
General changes:
- Kernel support for generic dbsym-style symbols.

branches: 1.3.2;
Build with -Wall -Wetc.

Fix "FPCSR" to "FPSCR". ("Floating Point Status and Control Register")

branches: 1.1.28; 1.1.34;
PowerPC port