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freebsd-dev/sys/arm/include
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Ian Lepore 45cd4c8cef Revert the recent armv6 changes to ALIGNED_POINTER(), restoring the 
fully-pessimized implementation that requires a type to be aligned to
its natural size.

On armv6+ the compiler might generate load-/store-multiple instructions
which require 4-byte alignment even though the source code is only
accessing individual uint32_t values in a way that doesn't require any
particular alignment at all.  The compiler apparently feels free to
combine multiple accesses into a single instruction that requires a
more-strict alignment, and no set of compiler flags seems to disable
this behavior (at least in clang 3.8).

This fixes alignment faults on arm systems using wifi adapters.  The
wifi code uses ALIGNED_POINTER(p, uint32_t) to decide whether it needs
to copy-align tcp headers.  Because clang is combining several uint32_t
accesses into a single ldm instruction, we need to say that accessing a
uint32_t requires 4-byte alignment.

Approved by:	re(gjb)
2016-06-21 17:53:42 +00:00
..
_align.h Disable alignment faults on armv6, adjust various alignment-related macros 2016-05-26 00:03:23 +00:00
_bus.h
_inttypes.h
_limits.h
_stdint.h ARM: Remove trailing whitespace from sys/arm/include 2015-11-10 12:02:41 +00:00
_types.h Do not define __NO_STRICT_ALIGNMENT for armv6. While the requirements 2016-06-13 16:48:27 +00:00
acle-compat.h
armreg.h Start to clean MIDR values using the CPUID scheme. We don't need to know 2016-06-07 18:50:36 +00:00
asm.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
asmacros.h
at91_gpio.h
atags.h ARM: Fix ATAG handling in LINUX_BOOT_API: 2016-03-26 06:57:36 +00:00
atomic-v4.h Implement atomic_cmpset_acq_64 and atomic_cmpset_rel_64 on arm and armeb. 2016-05-18 13:09:52 +00:00
atomic-v6.h ARM: Implement atomic_swap_int(9). It's used in DRM2 code. 2015-11-28 12:12:28 +00:00
atomic.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
blockio.h
board.h ARM: Remove trailing whitespace from sys/arm/include 2015-11-10 12:02:41 +00:00
bus_dma.h Eliminate the last dregs of the old global arm_root_dma_tag. 2015-11-02 22:49:39 +00:00
bus.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
clock.h
counter.h
cpu-v4.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
cpu-v6.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
cpu.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
cpuconf.h ARM: Remove support for xscale i80219 and i80321 CPUs. We haven't single 2016-02-03 09:15:44 +00:00
cpufunc.h ARM: Use new ARMv6 naming conventions for cache and TLB functions 2016-02-05 14:57:41 +00:00
cpuinfo.h Set the correct values in the arm aux control register, based on chip type. 2015-10-19 19:18:02 +00:00
db_machdep.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
debug_monitor.h Improve ARM debug_monitor for SMP machines 2016-05-29 17:35:38 +00:00
disassem.h ARM: Remove trailing whitespace from sys/arm/include 2015-11-10 12:02:41 +00:00
dump.h
elf.h
endian.h ARM: Remove trailing whitespace from sys/arm/include 2015-11-10 12:02:41 +00:00
exec.h
fdt.h Import ARM_INTRNG, the "next generation" interrupt architecture for arm 2015-10-18 18:26:19 +00:00
fiq.h
float.h Rationalize BSD license on sys/*/include/float.h 2015-08-05 17:05:35 +00:00
floatingpoint.h
fp.h
frame.h
gdb_machdep.h
ieee.h
ieeefp.h
in_cksum.h
intr.h Rename ARM_INTRNG and MIPS_INTRNG to INTRNG. This will help with machine 2016-04-15 16:05:41 +00:00
kdb.h ARM: Use new ARMv6 naming conventions for cache and TLB functions 2016-02-05 14:57:41 +00:00
limits.h
machdep.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
md_var.h Add support for usermode (vdso-like) gettimeofday(2) and 2015-12-07 12:20:26 +00:00
memdev.h
metadata.h
minidump.h Add mmu format info into ARM vmcore. 2016-01-15 18:53:06 +00:00
ofw_machdep.h Allow us to be told about memory past the first 4GB point, but ignore it. 2016-01-25 23:04:40 +00:00
param.h Revert the recent armv6 changes to ALIGNED_POINTER(), restoring the 2016-06-21 17:53:42 +00:00
pcb.h Make PCB structure binary compatible for old and new PMAP on ARM 2015-11-17 13:09:51 +00:00
pcpu.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
physmem.h Allow us to be told about memory past the first 4GB point, but ignore it. 2016-01-25 23:04:40 +00:00
pl310.h Make pl310_print_config static, it's not called out of pl310.c 2015-11-17 11:26:35 +00:00
platform.h
platformvar.h Add a MULTIDELAY option to allow the ARM kernel to have multiple DELAY 2016-04-30 17:27:33 +00:00
pmap_var.h Don't use atomic operations for page table entries and handle access 2016-04-22 06:32:27 +00:00
pmap-v4.h Rename pte.h to pte-v4.h and start including directly either pte-v4.h 2016-02-19 09:23:32 +00:00
pmap-v6.h Remove not used definitions and fix some style nits. 2016-02-19 10:32:17 +00:00
pmap.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
pmc_mdep.h
proc.h Remove the ARMv4/ARMv5 userland atomic support from struct proc on armv6. 2016-06-08 22:29:30 +00:00
profile.h
psl.h
pte-v4.h Rename pte.h to pte-v4.h and start including directly either pte-v4.h 2016-02-19 09:23:32 +00:00
pte-v6.h Remove AP_KRW definition not needed after r295801. 2016-02-19 09:52:11 +00:00
ptrace.h
reg.h SMP support for ARMv6/v7 HW watchpoints 2016-01-28 12:43:58 +00:00
reloc.h
resource.h ARM: Define PCI_RES_BUS resource for platforms having NEW_PCIB enabled. 2015-12-02 14:24:14 +00:00
runq.h
sc_machdep.h
setjmp.h
sf_buf.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
sigframe.h
signal.h
smp.h Rename ARM_INTRNG and MIPS_INTRNG to INTRNG. This will help with machine 2016-04-15 16:05:41 +00:00
stack.h
stdarg.h
swi.h
sysarch.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
sysreg.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
trap.h Move the check to see if we are tracing a function with the DTrace Function 2015-12-05 09:32:36 +00:00
ucontext.h
undefined.h
utrap.h
vdso.h Add support for usermode (vdso-like) gettimeofday(2) and 2015-12-07 12:20:26 +00:00
vfp.h Treat synchronous VFP exception just like aynchronous: as an FP exception, 2015-11-01 21:59:56 +00:00
vm.h Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't 2016-05-25 19:44:26 +00:00
vmparam.h Move arm's devmap to some generic place, so it can be used 2016-04-26 11:53:37 +00:00