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f434f3515b
freebsd-dev/sys/i386/include
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Bruce Evans f434f3515b Fix printing of negative offsets (typically from frame pointers) again. 
I fixed this in 1997, but the fix was over-engineered and fragile and
was broken in 2003 if not before.  i386 parameters were copied to 8
other arches verbatim, mostly after they stopped working on i386, and
mostly without the large comment saying how the values were chosen on
i386.  powerpc has a non-verbatim copy which just changes the uncritical
parameter and seems to add a sign extension bug to it.

Just treat negative offsets as offsets if they are no more negative than
-db_offset_max (default -64K), and remove all the broken parameters.

-64K is not very negative, but it is enough for frame and stack pointer
offsets since kernel stacks are small.

The over-engineering was mainly to go more negative than -64K for the
negative offset format, without affecting printing for more than a
single address.

Addresses in the top 64K of a (full 32-bit or 64-bit) address space
are now printed less well, but there aren't many interesting ones.
For arches that have many interesting ones very near the top (e.g.,
68k has interrupt vectors there), there would be no good limit for
the negative offset format and -64K is a good as anything.
2017-03-26 18:46:35 +00:00
..
pc Add more UEFI/e820 memory types from latest specifications. 2016-07-24 09:15:11 +00:00
xen xen/i386: enable the platform hypercall for i386 2016-05-03 08:05:14 +00:00
_align.h
_bus.h
_inttypes.h
_limits.h
_stdint.h
_types.h
acpica_machdep.h Merge acpica_machdep.h for amd64 and i386 and move to x86. In fact, these 2013-08-13 22:05:10 +00:00
apm_bios.h
apm_segments.h
asm.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
asmacros.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
atomic.h Add support for 8- and 16-bit atomic_(f)cmpset to x86. 2017-03-22 17:29:04 +00:00
bootinfo.h
bus_dma.h
bus.h
clock.h xen: implement an early timer for Xen PVH 2014-03-11 10:20:42 +00:00
counter.h Replace a number of conflations of mp_ncpus and mp_maxid with either 2016-07-06 14:09:49 +00:00
cpu.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
cpufunc.h Don't access the reserved registers %dr4 and %dr5 on i386. 2017-03-17 13:49:05 +00:00
cputypes.h Remove 'cpu' and 'cpu_class' on amd64. 2016-09-15 17:05:54 +00:00
cserial.h Fix improper use of "its". 2016-11-08 23:59:41 +00:00
db_machdep.h Fix printing of negative offsets (typically from frame pointers) again. 2017-03-26 18:46:35 +00:00
dump.h Factor out duplicated code from dumpsys() on each architecture into generic 2015-01-07 01:01:39 +00:00
efi.h Fix building on i386 and arm. But 'public domain' headers on the files 2016-10-13 06:56:23 +00:00
elan_mmcr.h
elf.h Convert machine/elf.h, machine/frame.h, machine/sigframe.h, 2013-02-20 17:39:52 +00:00
endian.h
exec.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
fdt.h Add basic support for FDT to i386 & amd64. This change includes: 2013-05-21 03:05:49 +00:00
float.h
floatingpoint.h
frame.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
gdb_machdep.h Report the values of x86 segment registers to remote debuggers. 2015-06-12 15:14:08 +00:00
ieeefp.h
if_wl_wavelan.h
in_cksum.h Rationalize BSD license on sys/*/include/in_cksum.h 2015-08-05 19:05:12 +00:00
intr_machdep.h Fix build for !SMP kernels after the Xen MSIX workaround. 2016-08-22 21:23:17 +00:00
ioctl_bt848.h
ioctl_meteor.h
iodev.h
kdb.h
limits.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
md_var.h Remove 'cpu' and 'cpu_class' on amd64. 2016-09-15 17:05:54 +00:00
memdev.h
metadata.h Move amd64 metadata.h to x86 and share with i386 2016-01-07 19:47:26 +00:00
minidump.h
mp_watchdog.h
nexusvar.h
npx.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
ofw_machdep.h Add basic support for FDT to i386 & amd64. This change includes: 2013-05-21 03:05:49 +00:00
param.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
pcaudioio.h
pcb_ext.h
pcb.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
pci_cfgreg.h
pcpu.h Implement get_pcpu() for i386 and use it to replace pcpu_find(curcpu) 2017-01-29 16:54:55 +00:00
perfmon.h
pmap.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
pmc_mdep.h Use single instance of the identical INKERNEL() and PMC_IN_KERNEL() 2015-07-02 14:37:21 +00:00
ppireg.h
proc.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
profile.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
psl.h
ptrace.h
pvclock.h Generalized parts of the XEN timer code into a generic pvclock 2015-02-04 08:26:43 +00:00
reg.h
reloc.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
resource.h Add support for managing PCI bus numbers. As with BARs and PCI-PCI bridge 2014-02-12 04:30:37 +00:00
runq.h
segments.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
setjmp.h
sf_buf.h Merge all MD sf_buf allocators into one MI, residing in kern/subr_sfbuf.c 2014-08-05 09:44:10 +00:00
sigframe.h Convert machine/elf.h, machine/frame.h, machine/sigframe.h, 2013-02-20 17:39:52 +00:00
signal.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
smapi.h
smp.h Merge common parts of i386 and amd64 md_var.h and smp.h into 2015-12-07 17:41:20 +00:00
speaker.h
specialreg.h
stack.h Merge stack(9) implementations for i386 and amd64 under x86/. 2015-09-11 03:24:07 +00:00
stdarg.h
sysarch.h
timerreg.h
trap.h
tss.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
ucontext.h Convert machine/elf.h, machine/frame.h, machine/sigframe.h, 2013-02-20 17:39:52 +00:00
varargs.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
vdso.h
vm86.h x86: Allow users to change PSL_RF via ptrace(PT_SETREGS...) 2013-11-14 15:37:20 +00:00
vm.h Reassign copyright statements on several files from Advanced 2015-04-23 14:22:20 +00:00
vmparam.h Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
xbox.h