Marcel Moolenaar 290245ea4c Don't call malloc() and free() while in the debugger and unwinding ... to get a stacktrace. This does not work even with M_NOWAIT when we have WITNESS and is generally a bad idea (pointed out by bde@). We allocate an 8K heap for use by the unwinder when ddb is active. A stack trace roughly takes up half of that in any case, so we have some room for complex unwind situations. We don't want to waste too much space though. Due to the nature of unwinding, we don't worry too much about fragmentation or performance of unwinding while in the debugger. For now we have our own heap management, but we may be able to leverage from existing code at some later time. While here: o Make sure we actually free the unwind environment after unwinding. This fixes a memory leak. o Replace Doug's license with mine in unwind.c and unwind.h. Both files don't have much, if any, of Doug's code left since the EPC syscall overhaul and the import of the unwinder. o Remove dead code. o Replace M_NOWAIT with M_WAITOK for all remaining malloc() calls.		2003-07-05 23:21:58 +00:00
..
pc	use __packed.	2002-09-23 18:54:32 +00:00
_inttypes.h	Since printf(3) now supports the `j' conversion specifier, use that	2002-06-30 05:48:03 +00:00
_limits.h	sys/sys/limits.h:	2003-05-19 20:29:07 +00:00
_regset.h	Make the regset pointers const pointers for the context restore functions.	2003-05-31 21:02:18 +00:00
_stdint.h	Create a new header <machine/_stdint.h> for storing MD parts of	2002-07-29 17:41:23 +00:00
_types.h	- Add vm_paddr_t, a physical address type. This is required for systems	2003-03-25 00:07:06 +00:00
acpica_machdep.h	Resolve conflicts arising from the ACPI CA 20020725 import.	2002-07-30 19:35:32 +00:00
asm.h	Revamp of the syscall path, exception and context handling. The	2003-05-16 21:26:42 +00:00
atomic.h	Simplify IA64_CMPXCHG to avoid having braced-groups in expressions.	2002-05-19 20:19:07 +00:00
bootinfo.h	Use one of the bi_spare entries for the DIG64 HCDP table address.	2002-12-08 20:32:56 +00:00
bus_memio.h
bus_pio.h
bus.h	Mega busdma API commit.	2003-07-01 15:52:06 +00:00
clock.h	Replace the hardcoding of 255 as the clock interrupt vector with	2003-01-06 01:39:25 +00:00
clockvar.h
cpu.h	Have TRAPF_USERMODE() take into account that the gateway page is not	2003-06-06 23:27:18 +00:00
cpufunc.h	Be more careful how we restore interrupts. Don't rewrite most of the	2003-05-24 21:44:24 +00:00
critical.h	Stage-2 commit of the critical*() code. This re-inlines cpu_critical_enter()	2002-04-01 23:51:23 +00:00
db_machdep.h	Revamp of the syscall path, exception and context handling. The	2003-05-16 21:26:42 +00:00
dig64.h	More MFp4: DIG64 structures.	2002-12-18 18:52:20 +00:00
efi.h
elf.h	Add TLS related relocation.	2003-06-19 06:51:43 +00:00
endian.h	Be careful not to define GCC-specific optimizations in the non-GCC	2002-09-23 04:32:17 +00:00
exec.h
float.h	Correct LDBL_* constants based on values from i386.	2003-03-27 20:38:22 +00:00
floatingpoint.h
fpu.h
frame.h	Revamp of the syscall path, exception and context handling. The	2003-05-16 21:26:42 +00:00
ia64_cpu.h	o Remove namespace pollution from param.h:	2002-05-19 04:42:19 +00:00
ieee.h
ieeefp.h	s/_ALPHA_/_MACHINE_/	2002-05-13 05:01:05 +00:00
in_cksum.h
inst.h
intr.h	Don't hardcode the address of the local (S)APIC (aka processor	2003-01-05 22:14:30 +00:00
intrcnt.h	Bump the number of interrupts from 65 to 257. This is a waste of	2003-01-05 22:00:19 +00:00
ioctl_bt848.h
ioctl_meteor.h
kse.h	Add a copy of the sparc64 machine/kse.h to satisfy depencies..	2002-06-29 18:07:50 +00:00
limits.h	sys/sys/limits.h:	2003-05-19 20:29:07 +00:00
mca.h	Remove the definition of struct mca_guid and use the generic	2002-05-29 05:19:07 +00:00
md_var.h	Remove special casing for running in the simulator from the kernel	2003-02-01 22:50:09 +00:00
mutex.h	Modify the critical section API as follows:	2001-12-18 00:27:18 +00:00
nexusvar.h	Convert NEXUS_ACCESSOR to use the __BUS_ACCESSOR	2002-08-22 19:47:10 +00:00
pal.h
param.h	Migrate the thread stack management functions from the machine-dependent	2003-06-14 23:23:55 +00:00
pcb.h	Revamp of the syscall path, exception and context handling. The	2003-05-16 21:26:42 +00:00
pci_cfgreg.h
pcpu.h	Remove unused MD fields (pc_pending_ipis, pc_next_asn and	2001-12-30 09:39:41 +00:00
pmap.h	pmap_install() needs to be atomic WRT to context switching. Protect	2003-05-19 04:16:30 +00:00
proc.h	Revamp of the syscall path, exception and context handling. The	2003-05-16 21:26:42 +00:00
profile.h	Change critical_t to register_t for intr_disable/restore.	2002-03-21 09:50:11 +00:00
pte.h
ptrace.h	Move the definition of PT_[GS]ET{,DB,FP}REGS from the MD ptrace.h to the	2002-03-16 00:25:53 +00:00
reg.h	Revamp of the syscall path, exception and context handling. The	2003-05-16 21:26:42 +00:00
reloc.h
resource.h
runq.h	Move the "- 1" into the RQB_FFS(mask) macro itself so that	2002-06-20 06:21:20 +00:00
sal.h	Remove special casing for running in the simulator from the kernel	2003-02-01 22:50:09 +00:00
sapicreg.h
sapicvar.h	List the IO SAPIC delivery mode definitions.	2002-10-04 01:33:30 +00:00
setjmp.h	Fix threaded applications on ia64 that are linked dynamicly. We did	2003-03-05 04:39:24 +00:00
sigframe.h	Split 4.x and 5.x signal handling so that we can keep 4.x signal	2002-10-25 19:10:58 +00:00
signal.h	Revamp of the syscall path, exception and context handling. The	2003-05-16 21:26:42 +00:00
smp.h	Revamp of the syscall path, exception and context handling. The	2003-05-16 21:26:42 +00:00
stdarg.h	o Add conditionals to allow va_list to be defined in other headers.	2002-10-06 22:01:07 +00:00
sysarch.h
ucontext.h	Revamp of the syscall path, exception and context handling. The	2003-05-16 21:26:42 +00:00
unwind.h	Don't call malloc() and free() while in the debugger and unwinding	2003-07-05 23:21:58 +00:00
varargs.h	Add conditionals to allow va_list to be defined in other headers.	2002-10-06 22:02:06 +00:00
vmparam.h	Revamp of the syscall path, exception and context handling. The	2003-05-16 21:26:42 +00:00