powerpc/ddb: Fix one more load to use db_read_bytes.

Fix some typos in crash(8) comments too.

XXX pullup-8
XXX pullup-9
XXX pullup-10

powerpc/ddb: Use db_read_bytes, not direct pointer access.

Mark some powerpc-variant ifdefs with XXX crash(8), not sure yet what
to do about them.

XXX pullup-8
XXX pullup-9
XXX pullup-10

crash(8): Add powerpc support.

XXX pullup-8
XXX pullup-9
XXX pullup-10

Style and cosmetic changes. No binary changes intended.

db_stack_trace_print():
For ibm4xx, show fault address in dear register also for EXC_DTMISS.

switch an assert in backtrace to an error return.

Remove white-spaces.

branches: 1.56.2; 1.56.6;
cleanup includes (explicit inclusion of <powerpc/psl.h> or <powerpc/userret.h>)

Now that the generic fixup code exists, there's no to patch the interrupts
directly since the stub fixup will do that automatically. Just need to add
stubs for the interrupt vectors and they get fixed automagically.

branches: 1.54.4;
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: 1.53.2;
Retire struct user, remove sys/user.h inclusions. Note sys/user.h header
as obsolete. Remove USER_TO_UAREA/UAREA_TO_USER macros.

Various #include fixes and review by matt@.

Remove pfind() and pgfind(), fix locking in various broken uses of these.
Rename real routines to proc_find() and pgrp_find(), remove PFIND_* flags
and have consistent behaviour. Provide proc_find_raw() for special cases.
Fix memory leak in sysctl_proc_corename().

COMPAT_LINUX: rework ptrace() locking, minimise differences between
different versions per-arch.

Note: while this change adds some formal cosmetics for COMPAT_DARWIN and
COMPAT_IRIX - locking there is utterly broken (for ages).

Fixes PR/43176.

branches: 1.51.2;
Adapt to spr.h breakup.

branches: 1.50.2;
Use lwp_getpcb() on mips, powerpc and sh3, clean from struct user usage.

Remove uarea swap-out functionality:

- Addresses the issue described in PR/38828.
- Some simplification in threading and sleepq subsystems.
- Eliminates pmap_collect() and, as a side note, allows pmap optimisations.
- Eliminates XS_CTL_DATA_ONSTACK in scsipi code.
- Avoids few scans on LWP list and thus potentially long holds of proc_lock.
- Cuts ~1.5k lines of code. Reduces amd64 kernel size by ~4k.
- Removes __SWAP_BROKEN cases.

Tested on x86, mips, acorn32 (thanks <mpumford>) and partly tested on
acorn26 (thanks to <bjh21>).

Discussed on <tech-kern>, reviewed by <ad>.

branches: 1.48.18;
Remove proc_representative_lwp(), use a simple LIST_FIRST() instead.
OK by <ad>.

branches: 1.47.6; 1.47.10; 1.47.12; 1.47.14;
Ifdef out all the MPC601 code with PPC_OEA601. Now only arches that have the
possibility of running on an MPC601, are infected with all the extra code
and nops that it added.

Also, fix compilation that I broke with the pmap code, by adding
oeacpufeat to the locores of various ppc arches. Noted by mlelstv.

branches: 1.46.22; 1.46.28;
TRUE -> true, FALSE -> false

More boolean_t -> bool lossage.

Pick up some additional files that were missed before due to conflicts
with newlock2 merge:

Replace the Mach-derived boolean_t type with the C99 bool type. A
future commit will replace use of TRUE and FALSE with true and false.

- Add /a modifier to trace that allows a specific LWP to be selected.
- When doing trace/t, always note which pid/lid combination is being traced.

Change the process/lwp flags seen by userland via sysctl back to the
P_*/L_* naming convention, and rename the in-kernel flags to avoid
conflict. (P_ -> PK_, L_ -> LW_ ). Add back the (now unused) LSDEAD
constant.

Restores source compatibility with pre-newlock2 tools like ps or top.

Reviewed by Andrew Doran.

branches: 1.41.2;
Merge newlock2 to head.

Make these files compile with -Wextra -Wno-unused.

branches: 1.39.2; 1.39.4;
Use p_find(addr, PFIND_LOCKED) in case the proclist_lock is held.

branches: 1.38.4; 1.38.8;
merge ktrace-lwp.

branches: 1.37.2;
adapt to const changes.

branches: 1.36.2;
Use "%#x" instead of "%x" so it's obvious the printed number is in hex.

Nuke register prefix for local variables, clean up indentation a little.

ANSIfy.

remove bogus code that terminates stack trace too early on OEA.

Cleanup/rework cpu_switch*, switch_exit, Idle routine. Remove pcb_psl
since it was write-only. When setting up a process, make sure the fake
callframes are properly linked together.

Only lower SPL when in Idle loop. Raise spl to previous level (which would
be IPL_SCHED) when exiting Idle loop. Never lower SPL anyplace else.

__KERNEL_RCSID()

Don't do vtophys on instruction addresses. This would cause problems for
user addresses (think trap from user mode) or lkms).

Enhance db_trace to understand syscalls and print the syscall number
that the user requested. For example:

0xd5c56f40: SC trap #240 by 0x15668c60: srr1=0xd032
r1=0xffffe470 cr=0x44000045 xer=0 ctr=0xeff27ab8

branches: 1.28.2;
Use PAGE_SIZE rather than NBPG.

Make ALI trap print DSISR.

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

Perform a rototill of the powerpc code. Mandate use of SPRG0 to store
a pointer to current cpu's cpu_info structure. Use cpu_info for
intstk,intr_depth,still_stk,idle_pcb,curpcb,curlwp,etal even on
non-MULTIPROCESSOR machines. Add common macros GET_CPUINFO and
INIT_CPUINFO to get and initialize the cpu_info struct on startup. Make
ibm4xx use the standard <powerpc/frame.h>. Use IFRAME_xx in ibm4xx
trap_subr.S instead of explicit magic offsets. Move INTSTK and SPILLSTK
to std.<platform>. Change faultbuf to a struct instead of an array.

On MPC6XX cpus, stop using the vector page for temporary space and use
reserved space in cpu_info.

MPC601 support bits:
* install 601-specific DSI and RUNMODETRC trap handlers
* save/restore MQ in trapframe, add MQ hooks to DDB
* extend battable to 512 entries to hold the 601's 8M translations
* instead of adding I/O to BAT starvation, set up segment registers
for Memory-Forced I/O Controller Interface Access
* sync after tlbie

Merge the nathanw_sa branch.

Avoid a trigraph.

Peform a rototill over the powerpc-based ports.

Move the trap/vector initialization for MPC6xx ports to mpc6xx_machdep.c
Also move softnet, install_extintr, mapiodev, kvtop. Add common BAT
initialization code.

Add user Altivec support.

Fix calls to OF_call_method in macppc/macppc/machdep.c.

Use ci_fpuproc in cpu_info instead of separate fpuproc.

Add separate syscall.c and defined __HAVE_SYSCALL_INTERN.

branches: 1.20.2;
Nuke local extern label_t *db_recover; it's now in <ddb/db_extern.h>

Fixup distinguishing between user and kernel addresses for IBM 4xx CPUs.

Handle the 601's Run Mode/Trace Exception.

Support
t/t PID
on the powerpc. (remember to use 0tPID if pid is in decimal...)

handle have_address=TRUE

allow ddb access to lr, ctr, cr and xer registers when not on PPC_IBM4XX

branches: 1.14.6;
Teach db_trace that some low addresses are ok to trace.

branches: 1.13.2;
Make this compile and work for the IBM 4xx series CPUs.

Replace printf with (*pr)

Globalize trapexit. Improve db_trace.c so that you can trace thru traps!
Rework the output so that is also prints the frame address by default.

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.

Introduce a new & faster pmap for the MPC6xx (60x, 7xx, 7xxx) PPC CPUs.
Move MPC6xx dependent header files to powerpc/include/mpc6xx/

Make `trace' useful even w/o symbols and add /f option to dump parameters.

branches: 1.7.2;
Build with -Wall -Wetc.

make db_[e]regs[] const

remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h>

Rename the machine-specific stack trace printing functions
from db_stack_trace_cmd() to db_stack_trace_print(),
and add an additional argument, a function pointer for an
output routine (i.e. printf() or db_printf()).

Add db_stack_trace_cmd() in db_command.[ch], calling
db_stack_trace_print() with db_printf() as the printer.

Move count==-1 special handling from db_stack_trace_print() [nee
db_stack_trace_cmd()] to db_stack_trace_cmd() [nascent here].

Again, I'm unable to test compilation on all affected platforms,
so advance apologies for potential brokenness.

branches: 1.3.8;
Add RSS accounting.

Fix layout of powerpc_saved_state; copy in saved MSR.

Import DDB from OpenBSD/powerpc.

Style and cosmetic changes. No binary changes intended.

db_stack_trace_print():
For ibm4xx, show fault address in dear register also for EXC_DTMISS.

switch an assert in backtrace to an error return.

Remove white-spaces.

branches: 1.56.2; 1.56.6;
cleanup includes (explicit inclusion of <powerpc/psl.h> or <powerpc/userret.h>)

Now that the generic fixup code exists, there's no to patch the interrupts
directly since the stub fixup will do that automatically. Just need to add
stubs for the interrupt vectors and they get fixed automagically.

branches: 1.54.4;
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: 1.53.2;
Retire struct user, remove sys/user.h inclusions. Note sys/user.h header
as obsolete. Remove USER_TO_UAREA/UAREA_TO_USER macros.

Various #include fixes and review by matt@.

Remove pfind() and pgfind(), fix locking in various broken uses of these.
Rename real routines to proc_find() and pgrp_find(), remove PFIND_* flags
and have consistent behaviour. Provide proc_find_raw() for special cases.
Fix memory leak in sysctl_proc_corename().

COMPAT_LINUX: rework ptrace() locking, minimise differences between
different versions per-arch.

Note: while this change adds some formal cosmetics for COMPAT_DARWIN and
COMPAT_IRIX - locking there is utterly broken (for ages).

Fixes PR/43176.

branches: 1.51.2;
Adapt to spr.h breakup.

branches: 1.50.2;
Use lwp_getpcb() on mips, powerpc and sh3, clean from struct user usage.

Remove uarea swap-out functionality:

- Addresses the issue described in PR/38828.
- Some simplification in threading and sleepq subsystems.
- Eliminates pmap_collect() and, as a side note, allows pmap optimisations.
- Eliminates XS_CTL_DATA_ONSTACK in scsipi code.
- Avoids few scans on LWP list and thus potentially long holds of proc_lock.
- Cuts ~1.5k lines of code. Reduces amd64 kernel size by ~4k.
- Removes __SWAP_BROKEN cases.

Tested on x86, mips, acorn32 (thanks <mpumford>) and partly tested on
acorn26 (thanks to <bjh21>).

Discussed on <tech-kern>, reviewed by <ad>.

branches: 1.48.18;
Remove proc_representative_lwp(), use a simple LIST_FIRST() instead.
OK by <ad>.

branches: 1.47.6; 1.47.10; 1.47.12; 1.47.14;
Ifdef out all the MPC601 code with PPC_OEA601. Now only arches that have the
possibility of running on an MPC601, are infected with all the extra code
and nops that it added.

Also, fix compilation that I broke with the pmap code, by adding
oeacpufeat to the locores of various ppc arches. Noted by mlelstv.

branches: 1.46.22; 1.46.28;
TRUE -> true, FALSE -> false

More boolean_t -> bool lossage.

Pick up some additional files that were missed before due to conflicts
with newlock2 merge:

Replace the Mach-derived boolean_t type with the C99 bool type. A
future commit will replace use of TRUE and FALSE with true and false.

- Add /a modifier to trace that allows a specific LWP to be selected.
- When doing trace/t, always note which pid/lid combination is being traced.

Change the process/lwp flags seen by userland via sysctl back to the
P_*/L_* naming convention, and rename the in-kernel flags to avoid
conflict. (P_ -> PK_, L_ -> LW_ ). Add back the (now unused) LSDEAD
constant.

Restores source compatibility with pre-newlock2 tools like ps or top.

Reviewed by Andrew Doran.

branches: 1.41.2;
Merge newlock2 to head.

Make these files compile with -Wextra -Wno-unused.

branches: 1.39.2; 1.39.4;
Use p_find(addr, PFIND_LOCKED) in case the proclist_lock is held.

branches: 1.38.4; 1.38.8;
merge ktrace-lwp.

branches: 1.37.2;
adapt to const changes.

branches: 1.36.2;
Use "%#x" instead of "%x" so it's obvious the printed number is in hex.

Nuke register prefix for local variables, clean up indentation a little.

ANSIfy.

remove bogus code that terminates stack trace too early on OEA.

Cleanup/rework cpu_switch*, switch_exit, Idle routine. Remove pcb_psl
since it was write-only. When setting up a process, make sure the fake
callframes are properly linked together.

Only lower SPL when in Idle loop. Raise spl to previous level (which would
be IPL_SCHED) when exiting Idle loop. Never lower SPL anyplace else.

__KERNEL_RCSID()

Don't do vtophys on instruction addresses. This would cause problems for
user addresses (think trap from user mode) or lkms).

Enhance db_trace to understand syscalls and print the syscall number
that the user requested. For example:

0xd5c56f40: SC trap #240 by 0x15668c60: srr1=0xd032
r1=0xffffe470 cr=0x44000045 xer=0 ctr=0xeff27ab8

branches: 1.28.2;
Use PAGE_SIZE rather than NBPG.

Make ALI trap print DSISR.

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

Perform a rototill of the powerpc code. Mandate use of SPRG0 to store
a pointer to current cpu's cpu_info structure. Use cpu_info for
intstk,intr_depth,still_stk,idle_pcb,curpcb,curlwp,etal even on
non-MULTIPROCESSOR machines. Add common macros GET_CPUINFO and
INIT_CPUINFO to get and initialize the cpu_info struct on startup. Make
ibm4xx use the standard <powerpc/frame.h>. Use IFRAME_xx in ibm4xx
trap_subr.S instead of explicit magic offsets. Move INTSTK and SPILLSTK
to std.<platform>. Change faultbuf to a struct instead of an array.

On MPC6XX cpus, stop using the vector page for temporary space and use
reserved space in cpu_info.

MPC601 support bits:
* install 601-specific DSI and RUNMODETRC trap handlers
* save/restore MQ in trapframe, add MQ hooks to DDB
* extend battable to 512 entries to hold the 601's 8M translations
* instead of adding I/O to BAT starvation, set up segment registers
for Memory-Forced I/O Controller Interface Access
* sync after tlbie

Merge the nathanw_sa branch.

Avoid a trigraph.

Peform a rototill over the powerpc-based ports.

Move the trap/vector initialization for MPC6xx ports to mpc6xx_machdep.c
Also move softnet, install_extintr, mapiodev, kvtop. Add common BAT
initialization code.

Add user Altivec support.

Fix calls to OF_call_method in macppc/macppc/machdep.c.

Use ci_fpuproc in cpu_info instead of separate fpuproc.

Add separate syscall.c and defined __HAVE_SYSCALL_INTERN.

branches: 1.20.2;
Nuke local extern label_t *db_recover; it's now in <ddb/db_extern.h>

Fixup distinguishing between user and kernel addresses for IBM 4xx CPUs.

Handle the 601's Run Mode/Trace Exception.

Support
t/t PID
on the powerpc. (remember to use 0tPID if pid is in decimal...)

handle have_address=TRUE

allow ddb access to lr, ctr, cr and xer registers when not on PPC_IBM4XX

branches: 1.14.6;
Teach db_trace that some low addresses are ok to trace.

branches: 1.13.2;
Make this compile and work for the IBM 4xx series CPUs.

Replace printf with (*pr)

Globalize trapexit. Improve db_trace.c so that you can trace thru traps!
Rework the output so that is also prints the frame address by default.

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.

Introduce a new & faster pmap for the MPC6xx (60x, 7xx, 7xxx) PPC CPUs.
Move MPC6xx dependent header files to powerpc/include/mpc6xx/

Make `trace' useful even w/o symbols and add /f option to dump parameters.

branches: 1.7.2;
Build with -Wall -Wetc.

make db_[e]regs[] const

remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h>

Rename the machine-specific stack trace printing functions
from db_stack_trace_cmd() to db_stack_trace_print(),
and add an additional argument, a function pointer for an
output routine (i.e. printf() or db_printf()).

Add db_stack_trace_cmd() in db_command.[ch], calling
db_stack_trace_print() with db_printf() as the printer.

Move count==-1 special handling from db_stack_trace_print() [nee
db_stack_trace_cmd()] to db_stack_trace_cmd() [nascent here].

Again, I'm unable to test compilation on all affected platforms,
so advance apologies for potential brokenness.

branches: 1.3.8;
Add RSS accounting.

Fix layout of powerpc_saved_state; copy in saved MSR.

Import DDB from OpenBSD/powerpc.

switch an assert in backtrace to an error return.

Remove white-spaces.

branches: 1.56.2; 1.56.6;
cleanup includes (explicit inclusion of <powerpc/psl.h> or <powerpc/userret.h>)

Now that the generic fixup code exists, there's no to patch the interrupts
directly since the stub fixup will do that automatically. Just need to add
stubs for the interrupt vectors and they get fixed automagically.

branches: 1.54.4;
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: 1.53.2;
Retire struct user, remove sys/user.h inclusions. Note sys/user.h header
as obsolete. Remove USER_TO_UAREA/UAREA_TO_USER macros.

Various #include fixes and review by matt@.

Remove pfind() and pgfind(), fix locking in various broken uses of these.
Rename real routines to proc_find() and pgrp_find(), remove PFIND_* flags
and have consistent behaviour. Provide proc_find_raw() for special cases.
Fix memory leak in sysctl_proc_corename().

COMPAT_LINUX: rework ptrace() locking, minimise differences between
different versions per-arch.

Note: while this change adds some formal cosmetics for COMPAT_DARWIN and
COMPAT_IRIX - locking there is utterly broken (for ages).

Fixes PR/43176.

branches: 1.51.2;
Adapt to spr.h breakup.

branches: 1.50.2;
Use lwp_getpcb() on mips, powerpc and sh3, clean from struct user usage.

Remove uarea swap-out functionality:

- Addresses the issue described in PR/38828.
- Some simplification in threading and sleepq subsystems.
- Eliminates pmap_collect() and, as a side note, allows pmap optimisations.
- Eliminates XS_CTL_DATA_ONSTACK in scsipi code.
- Avoids few scans on LWP list and thus potentially long holds of proc_lock.
- Cuts ~1.5k lines of code. Reduces amd64 kernel size by ~4k.
- Removes __SWAP_BROKEN cases.

Tested on x86, mips, acorn32 (thanks <mpumford>) and partly tested on
acorn26 (thanks to <bjh21>).

Discussed on <tech-kern>, reviewed by <ad>.

branches: 1.48.18;
Remove proc_representative_lwp(), use a simple LIST_FIRST() instead.
OK by <ad>.

branches: 1.47.6; 1.47.10; 1.47.12; 1.47.14;
Ifdef out all the MPC601 code with PPC_OEA601. Now only arches that have the
possibility of running on an MPC601, are infected with all the extra code
and nops that it added.

Also, fix compilation that I broke with the pmap code, by adding
oeacpufeat to the locores of various ppc arches. Noted by mlelstv.

branches: 1.46.22; 1.46.28;
TRUE -> true, FALSE -> false

More boolean_t -> bool lossage.

Pick up some additional files that were missed before due to conflicts
with newlock2 merge:

Replace the Mach-derived boolean_t type with the C99 bool type. A
future commit will replace use of TRUE and FALSE with true and false.

- Add /a modifier to trace that allows a specific LWP to be selected.
- When doing trace/t, always note which pid/lid combination is being traced.

Change the process/lwp flags seen by userland via sysctl back to the
P_*/L_* naming convention, and rename the in-kernel flags to avoid
conflict. (P_ -> PK_, L_ -> LW_ ). Add back the (now unused) LSDEAD
constant.

Restores source compatibility with pre-newlock2 tools like ps or top.

Reviewed by Andrew Doran.

branches: 1.41.2;
Merge newlock2 to head.

Make these files compile with -Wextra -Wno-unused.

branches: 1.39.2; 1.39.4;
Use p_find(addr, PFIND_LOCKED) in case the proclist_lock is held.

branches: 1.38.4; 1.38.8;
merge ktrace-lwp.

branches: 1.37.2;
adapt to const changes.

branches: 1.36.2;
Use "%#x" instead of "%x" so it's obvious the printed number is in hex.

Nuke register prefix for local variables, clean up indentation a little.

ANSIfy.

remove bogus code that terminates stack trace too early on OEA.

Cleanup/rework cpu_switch*, switch_exit, Idle routine. Remove pcb_psl
since it was write-only. When setting up a process, make sure the fake
callframes are properly linked together.

Only lower SPL when in Idle loop. Raise spl to previous level (which would
be IPL_SCHED) when exiting Idle loop. Never lower SPL anyplace else.

__KERNEL_RCSID()

Don't do vtophys on instruction addresses. This would cause problems for
user addresses (think trap from user mode) or lkms).

Enhance db_trace to understand syscalls and print the syscall number
that the user requested. For example:

0xd5c56f40: SC trap #240 by 0x15668c60: srr1=0xd032
r1=0xffffe470 cr=0x44000045 xer=0 ctr=0xeff27ab8

branches: 1.28.2;
Use PAGE_SIZE rather than NBPG.

Make ALI trap print DSISR.

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

Perform a rototill of the powerpc code. Mandate use of SPRG0 to store
a pointer to current cpu's cpu_info structure. Use cpu_info for
intstk,intr_depth,still_stk,idle_pcb,curpcb,curlwp,etal even on
non-MULTIPROCESSOR machines. Add common macros GET_CPUINFO and
INIT_CPUINFO to get and initialize the cpu_info struct on startup. Make
ibm4xx use the standard <powerpc/frame.h>. Use IFRAME_xx in ibm4xx
trap_subr.S instead of explicit magic offsets. Move INTSTK and SPILLSTK
to std.<platform>. Change faultbuf to a struct instead of an array.

On MPC6XX cpus, stop using the vector page for temporary space and use
reserved space in cpu_info.

MPC601 support bits:
* install 601-specific DSI and RUNMODETRC trap handlers
* save/restore MQ in trapframe, add MQ hooks to DDB
* extend battable to 512 entries to hold the 601's 8M translations
* instead of adding I/O to BAT starvation, set up segment registers
for Memory-Forced I/O Controller Interface Access
* sync after tlbie

Merge the nathanw_sa branch.

Avoid a trigraph.

Peform a rototill over the powerpc-based ports.

Move the trap/vector initialization for MPC6xx ports to mpc6xx_machdep.c
Also move softnet, install_extintr, mapiodev, kvtop. Add common BAT
initialization code.

Add user Altivec support.

Fix calls to OF_call_method in macppc/macppc/machdep.c.

Use ci_fpuproc in cpu_info instead of separate fpuproc.

Add separate syscall.c and defined __HAVE_SYSCALL_INTERN.

branches: 1.20.2;
Nuke local extern label_t *db_recover; it's now in <ddb/db_extern.h>

Fixup distinguishing between user and kernel addresses for IBM 4xx CPUs.

Handle the 601's Run Mode/Trace Exception.

Support
t/t PID
on the powerpc. (remember to use 0tPID if pid is in decimal...)

handle have_address=TRUE

allow ddb access to lr, ctr, cr and xer registers when not on PPC_IBM4XX

branches: 1.14.6;
Teach db_trace that some low addresses are ok to trace.

branches: 1.13.2;
Make this compile and work for the IBM 4xx series CPUs.

Replace printf with (*pr)

Globalize trapexit. Improve db_trace.c so that you can trace thru traps!
Rework the output so that is also prints the frame address by default.

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.

Introduce a new & faster pmap for the MPC6xx (60x, 7xx, 7xxx) PPC CPUs.
Move MPC6xx dependent header files to powerpc/include/mpc6xx/

Make `trace' useful even w/o symbols and add /f option to dump parameters.

branches: 1.7.2;
Build with -Wall -Wetc.

make db_[e]regs[] const

remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h>

Rename the machine-specific stack trace printing functions
from db_stack_trace_cmd() to db_stack_trace_print(),
and add an additional argument, a function pointer for an
output routine (i.e. printf() or db_printf()).

Add db_stack_trace_cmd() in db_command.[ch], calling
db_stack_trace_print() with db_printf() as the printer.

Move count==-1 special handling from db_stack_trace_print() [nee
db_stack_trace_cmd()] to db_stack_trace_cmd() [nascent here].

Again, I'm unable to test compilation on all affected platforms,
so advance apologies for potential brokenness.

branches: 1.3.8;
Add RSS accounting.

Fix layout of powerpc_saved_state; copy in saved MSR.

Import DDB from OpenBSD/powerpc.