Commit Graph

13 Commits

Author SHA1 Message Date
Jake Burkholder
82436f1067 Rename some fields in struct frame to be compatible with NetBSD/OpenBSD,
and add some compatibility defines.  Add fields for ins and locals to
struct reg also for the same reason; these aren't filled in yet because
getting at those registers sucks and I'd rather not save them in the
trapframe just for this.  Reorder struct reg to be ABI compatible as
well.  Add needed include of machine/emul.h.

This gets pmdb (poor man's debugger) from OpenBSD mostly compiling but it
doesn't work yet :(
2002-04-09 00:57:23 +00:00
Jake Burkholder
5d60dc233a Add a macro for shift of an integer (1 << shift == sizeof). Move the pointer
define to live alongside it.  For kicks assert at compile time that they are
correct.  Use these instead of magic numbers.
2002-02-27 00:21:04 +00:00
Jake Burkholder
8c3d8ad946 Add definitions for magic numbers used in asm.
Bloat trapframe with many extra fields so we don't need extra structures.
Use small data types where possible.
Remove second copy of TF_DONE.
Remove mmuframe.
2001-12-29 06:56:11 +00:00
Jake Burkholder
d5a7911f4a 1. Remove kdbframe. Bad idea.
2. Add a TF_DONE macro, which fiddles a trapframe to make the retry on
   return from traps act like a done (advance past the trapping
   instruction instead of re-executing).
3. Flush the windows before entering the debugger, since it is no
   longer done in the breakpoint trap vector.
4. Print a warning if trace <pid> is attempted, it is not yet implemented.
5. Print traps better and decode system calls in traces.

Submitted by:	rwatson (4)
2001-11-18 03:41:12 +00:00
Thomas Moestl
9b3b51bcab Add code to emulate unimplemented (non-fp) instructions and to fixup
unaligned accesses, and instr.h, which contrains definitions for the
sparc64 instruction set (partly from NetBSD).
Make use of some definitions from instr.h in db_disasm.c.
2001-11-06 20:13:44 +00:00
Julian Elischer
b40ce4165d KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00
David E. O'Brien
68b0bc4fa3 style(9) the structure names 2001-09-04 09:23:23 +00:00
Jake Burkholder
880a354a4a Implement a slightly different window spill/fill algorithm for dealing
with user windows in kernel mode.  We split the windows using %otherwin,
but instead of spilling user window directly to the pcb, we attempt to
spill to user space.  If this fails because a stack page is not resident
(or the stack is smashed), the fault handler at tl 2 will detect the
situation and resume at tl 1 again where recovery code can spill to the
pcb.  Any windows that have been saved to the pcb will be copied out to
the user stack on return from kernel mode.

Add a first stab at 32 bit window handling.  This uses much of the same
recovery code as above because the alignment of the stack pointer is used
to detect 32 bit code.  Attempting to spill a 32 bit window to a 64 bit
stack, or vice versa, will cause an alignment fault.  The recovery code
then changes the window state to vector to a 32 bit spill/fill handler
and retries the faulting instruction.

Add ktr traces in useful places during trap processing.

Adjust comments to reflect new code and add many more.
2001-09-03 23:10:45 +00:00
Jake Burkholder
e2aceedd5a Add support for splitting the register windows on entry to the
kernel from usermode.  The remaining user windows are spilled
to the pcb as necessary.  The user land window fault handlers
fill directly from the pcb on return.
Add system call entry points.

Submitted by:	tmm
2001-08-20 23:40:31 +00:00
Jake Burkholder
db6c479810 Add a field to trapframe for saving the pil. 2001-08-10 04:18:13 +00:00
David E. O'Brien
73a4930297 The author isn't a [UC] Regents. Correct the copyright language. 2001-08-09 02:09:34 +00:00
Jake Burkholder
89bf8575ee Flesh out the sparc64 port considerably. This contains:
- mostly complete kernel pmap support, and tested but currently turned
  off userland pmap support
- low level assembly language trap, context switching and support code
- fully implemented atomic.h and supporting cpufunc.h
- some support for kernel debugging with ddb
- various header tweaks and filling out of machine dependent structures
2001-07-31 06:05:05 +00:00
Jake Burkholder
98bb5304e1 Add skeleton machine dependent headers and c files for a port of freebsd
to a new architecture.  This is the base of the sparc64 port, but contains
limited machine dependent code, and can be used a base for ports.  Included
are:
- standard machine dependent headers, tweaked for a 64 bit, big endian
  architecture, including empty versions of all the machine dependent
  structures
- a machine independent atomic.h, which can be used until a port has
  support for interrupts and the operations really need to be atomic
- stub versions of all the machine dependent functions, which panic
  when called and print out the name of the function that needs to
  be implemented.  functions which are normally in assembly files are
  not included, but this should reduce the number of different undefined
  references on the first few compiles from hundreds to 5 or 6
Given minimal startup code and console support it should be trivial to
make this compile and run the first few sysinits on almost any architecture.

Requested by:   alfred, imp, jhb
2001-07-31 05:45:16 +00:00