In order to prevent _mcount() from being recursively called when built with COPTS=-O0,
sprinkle `__always_inline' to make _mcount() be generated as a single function.

sys/arch/amd64: remove trailing whitespace

We reorganise definitions for XEN source support as follows:

XEN - common sources required for baseline XEN support.
XENPV - sources required for support of XEN in PV mode.
XENPVHVM - sources required for support for XEN in HVM mode.
XENPVH - sources required for support for XEN in PVH mode.

branches: 1.18.18;
x86_lfence() calls mcount(), so inline lfence instructions in mcount
helper functions

__mcount_lock is moved to MI from MD.
because it is needed for all MULTIPROCESSOR arch, but it is exists only in i386 and amd64.

ok christos@, on tech-kern@

branches: 1.16.6;
Pass PICFLAGS down to cc-as-as and use __PIC__ to decide if it is small
vs big PIC mode. Retire -DPIC and -DBIGPIC.

branches: 1.15.28; 1.15.38; 1.15.44;
put the contents of these header files around #ifdef __x86_64__, and
#include the <i386/foo.h> in the #else clause, making these files
largely bit-size independant.

branches: 1.14.4;
fix profiling compilation.

branches: 1.13.2; 1.13.4;
Access Xen's vcpu info structure per-CPU.
Tested on i386 and amd64 (both dom0 and domU) by me.
Xen2 tested (both dom0 and domU) by bouyer.
OK bouyer

branches: 1.12.6; 1.12.8;
- Make __cpu_simple_lock and similar real functions and patch at runtime.
- Remove old x86 atomic ops.
- Drop text alignment back to 16 on i386 (really, this time).
- Minor cleanup.

branches: 1.11.2; 1.11.6;
Make Xen profiling kernels work.
XXX assembly still needs to be fixed for non-Xen kernels.

branches: 1.10.2;
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.

Sync with i386.

Fix profiling kernels:

read_psl -> x86_read_psl
write_psl -> x86_write_psl
disable_intr -> x86_disable_intr

branches: 1.7.6; 1.7.12; 1.7.14; 1.7.22; 1.7.24; 1.7.26;
Merge newlock2 to head.

branches: 1.6.16;
Make sure we generate the right call with -fPIC.

branches: 1.5.2; 1.5.4;
merge ktrace-lwp.

pull in changes from i386 profile.h:
- allow profiling of MP kernels, add a spinlock around the body of mcount().
fixes PR 31360.
- save and restore eflags instead of just doing cli/sti.

branches: 1.3.14; 1.3.16;
Define the mcount function in assembler, and have it save all registers
used for argument passing, plus %rax (used to pass the number of float
arguments to varargs functions), to avoid having it clobber caller-saved
registers. mcount is emitted "under the radar", so the compiler doesn't
know it should do this.

Change the kernel mcount entry/exit macros to use plain cli/sti, like on i386.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.1.2;
Rename the x86_64 port to amd64, as this is the actual name used for
the processor family now. x86_64 is kept as the MACHINE_ARCH value,
since it's already widely used (by e.g. the toolchain, etc), and
by other operating systems.

sys/arch/amd64: remove trailing whitespace

We reorganise definitions for XEN source support as follows:

XEN - common sources required for baseline XEN support.
XENPV - sources required for support of XEN in PV mode.
XENPVHVM - sources required for support for XEN in HVM mode.
XENPVH - sources required for support for XEN in PVH mode.

branches: 1.18.18;
x86_lfence() calls mcount(), so inline lfence instructions in mcount
helper functions

__mcount_lock is moved to MI from MD.
because it is needed for all MULTIPROCESSOR arch, but it is exists only in i386 and amd64.

ok christos@, on tech-kern@

branches: 1.16.6;
Pass PICFLAGS down to cc-as-as and use __PIC__ to decide if it is small
vs big PIC mode. Retire -DPIC and -DBIGPIC.

branches: 1.15.28; 1.15.38; 1.15.44;
put the contents of these header files around #ifdef __x86_64__, and
#include the <i386/foo.h> in the #else clause, making these files
largely bit-size independant.

branches: 1.14.4;
fix profiling compilation.

branches: 1.13.2; 1.13.4;
Access Xen's vcpu info structure per-CPU.
Tested on i386 and amd64 (both dom0 and domU) by me.
Xen2 tested (both dom0 and domU) by bouyer.
OK bouyer

branches: 1.12.6; 1.12.8;
- Make __cpu_simple_lock and similar real functions and patch at runtime.
- Remove old x86 atomic ops.
- Drop text alignment back to 16 on i386 (really, this time).
- Minor cleanup.

branches: 1.11.2; 1.11.6;
Make Xen profiling kernels work.
XXX assembly still needs to be fixed for non-Xen kernels.

branches: 1.10.2;
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.

Sync with i386.

Fix profiling kernels:

read_psl -> x86_read_psl
write_psl -> x86_write_psl
disable_intr -> x86_disable_intr

branches: 1.7.6; 1.7.12; 1.7.14; 1.7.22; 1.7.24; 1.7.26;
Merge newlock2 to head.

branches: 1.6.16;
Make sure we generate the right call with -fPIC.

branches: 1.5.2; 1.5.4;
merge ktrace-lwp.

pull in changes from i386 profile.h:
- allow profiling of MP kernels, add a spinlock around the body of mcount().
fixes PR 31360.
- save and restore eflags instead of just doing cli/sti.

branches: 1.3.14; 1.3.16;
Define the mcount function in assembler, and have it save all registers
used for argument passing, plus %rax (used to pass the number of float
arguments to varargs functions), to avoid having it clobber caller-saved
registers. mcount is emitted "under the radar", so the compiler doesn't
know it should do this.

Change the kernel mcount entry/exit macros to use plain cli/sti, like on i386.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.1.2;
Rename the x86_64 port to amd64, as this is the actual name used for
the processor family now. x86_64 is kept as the MACHINE_ARCH value,
since it's already widely used (by e.g. the toolchain, etc), and
by other operating systems.

We reorganise definitions for XEN source support as follows:

XEN - common sources required for baseline XEN support.
XENPV - sources required for support of XEN in PV mode.
XENPVHVM - sources required for support for XEN in HVM mode.
XENPVH - sources required for support for XEN in PVH mode.

x86_lfence() calls mcount(), so inline lfence instructions in mcount
helper functions

__mcount_lock is moved to MI from MD.
because it is needed for all MULTIPROCESSOR arch, but it is exists only in i386 and amd64.

ok christos@, on tech-kern@

branches: 1.16.6;
Pass PICFLAGS down to cc-as-as and use __PIC__ to decide if it is small
vs big PIC mode. Retire -DPIC and -DBIGPIC.

branches: 1.15.28; 1.15.38; 1.15.44;
put the contents of these header files around #ifdef __x86_64__, and
#include the <i386/foo.h> in the #else clause, making these files
largely bit-size independant.

branches: 1.14.4;
fix profiling compilation.

branches: 1.13.2; 1.13.4;
Access Xen's vcpu info structure per-CPU.
Tested on i386 and amd64 (both dom0 and domU) by me.
Xen2 tested (both dom0 and domU) by bouyer.
OK bouyer

branches: 1.12.6; 1.12.8;
- Make __cpu_simple_lock and similar real functions and patch at runtime.
- Remove old x86 atomic ops.
- Drop text alignment back to 16 on i386 (really, this time).
- Minor cleanup.

branches: 1.11.2; 1.11.6;
Make Xen profiling kernels work.
XXX assembly still needs to be fixed for non-Xen kernels.

branches: 1.10.2;
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.

Sync with i386.

Fix profiling kernels:

read_psl -> x86_read_psl
write_psl -> x86_write_psl
disable_intr -> x86_disable_intr

branches: 1.7.6; 1.7.12; 1.7.14; 1.7.22; 1.7.24; 1.7.26;
Merge newlock2 to head.

branches: 1.6.16;
Make sure we generate the right call with -fPIC.

branches: 1.5.2; 1.5.4;
merge ktrace-lwp.

pull in changes from i386 profile.h:
- allow profiling of MP kernels, add a spinlock around the body of mcount().
fixes PR 31360.
- save and restore eflags instead of just doing cli/sti.

branches: 1.3.14; 1.3.16;
Define the mcount function in assembler, and have it save all registers
used for argument passing, plus %rax (used to pass the number of float
arguments to varargs functions), to avoid having it clobber caller-saved
registers. mcount is emitted "under the radar", so the compiler doesn't
know it should do this.

Change the kernel mcount entry/exit macros to use plain cli/sti, like on i386.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.1.2;
Rename the x86_64 port to amd64, as this is the actual name used for
the processor family now. x86_64 is kept as the MACHINE_ARCH value,
since it's already widely used (by e.g. the toolchain, etc), and
by other operating systems.

x86_lfence() calls mcount(), so inline lfence instructions in mcount
helper functions

__mcount_lock is moved to MI from MD.
because it is needed for all MULTIPROCESSOR arch, but it is exists only in i386 and amd64.

ok christos@, on tech-kern@

branches: 1.16.6;
Pass PICFLAGS down to cc-as-as and use __PIC__ to decide if it is small
vs big PIC mode. Retire -DPIC and -DBIGPIC.

branches: 1.15.28; 1.15.38; 1.15.44;
put the contents of these header files around #ifdef __x86_64__, and
#include the <i386/foo.h> in the #else clause, making these files
largely bit-size independant.

branches: 1.14.4;
fix profiling compilation.

branches: 1.13.2; 1.13.4;
Access Xen's vcpu info structure per-CPU.
Tested on i386 and amd64 (both dom0 and domU) by me.
Xen2 tested (both dom0 and domU) by bouyer.
OK bouyer

branches: 1.12.6; 1.12.8;
- Make __cpu_simple_lock and similar real functions and patch at runtime.
- Remove old x86 atomic ops.
- Drop text alignment back to 16 on i386 (really, this time).
- Minor cleanup.

branches: 1.11.2; 1.11.6;
Make Xen profiling kernels work.
XXX assembly still needs to be fixed for non-Xen kernels.

branches: 1.10.2;
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.

Sync with i386.

Fix profiling kernels:

read_psl -> x86_read_psl
write_psl -> x86_write_psl
disable_intr -> x86_disable_intr

branches: 1.7.6; 1.7.12; 1.7.14; 1.7.22; 1.7.24; 1.7.26;
Merge newlock2 to head.

branches: 1.6.16;
Make sure we generate the right call with -fPIC.

branches: 1.5.2; 1.5.4;
merge ktrace-lwp.

pull in changes from i386 profile.h:
- allow profiling of MP kernels, add a spinlock around the body of mcount().
fixes PR 31360.
- save and restore eflags instead of just doing cli/sti.

branches: 1.3.14; 1.3.16;
Define the mcount function in assembler, and have it save all registers
used for argument passing, plus %rax (used to pass the number of float
arguments to varargs functions), to avoid having it clobber caller-saved
registers. mcount is emitted "under the radar", so the compiler doesn't
know it should do this.

Change the kernel mcount entry/exit macros to use plain cli/sti, like on i386.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.1.2;
Rename the x86_64 port to amd64, as this is the actual name used for
the processor family now. x86_64 is kept as the MACHINE_ARCH value,
since it's already widely used (by e.g. the toolchain, etc), and
by other operating systems.