Fixes profiling for non-underscore-prepending toolchains
(elf, e.g., shared libs), and breaks a.out/ecoff toolchains.
May break mips kernel profiling too. Needs more thought, since the
original intent of __mcount vs ___mcount on mips date back to pre-1.0 days.
* handle interpreters with nonzero virtual address of entry-point:
subtract p_vaddr from computed entrypoint, as the mips elf exec did.
* Add #ifdef ELF_INTERP_NON_RELOCATABLE/#endif around the code
that tries to choose a `good' address at which to load an interpreter,
if none was set by the emul probe function.
(the address chosen could be improved to avoid fragmenting the
process virtual address space).
* define ELF_INTERP_NON_RELOCATABLE in machine/elf_machdep.h for mips CPUs,
which currently use a GNU-derived ld.so.
ELF_INTERP_NON_RELOCATABLE is not necessary for native NetBSD/alpha ELF
binaries. It may be required for GNU-derived ELF dynamic loaders (Linux/i386?)
mips_r2000_, mips_R2000_ -> mips1_
mips_r4000_, mips_R4000_ -> mips3_
(which are also, for mnemonic reasons, consistent with gcc flag usage,
rather than using mipsI_ and mipsIII_).
* Move mips-I pte (TLBlo) definitions from pmax/include/pte.h
to mips/include/mips1_pte.h
* Move mips-III pte (TLBlo) definitions from pica/include/pte.h
to mips/include/mips3_pte.h
* Add new mips/include/pte.h, which includes exactly one of
mips1_pte.h or mips3_pte.h (which still have namespace collisions),
depending on "options MIPS1" or "options MIPS3". (hack).
Move soft kvtopte(), ptetovk() definitions to mips/include/pte.h
* Add macro PTE_TO_PADDR() to hide the different hardware TLB formats
when mapping from pte to physical address.
* Add macro PTE_READONLY() to hide lack of SW read-only bit in mips-III
tlb. (mips1 pmap uses a sw bit in the PTE, mips3 looks up RO bit in
the kernel pmap.)
* Use macros (not direct TLB frobbing) in mips/trap.c, to make it
mips-1/mips-III indepenndet.
* Change {pmax,pica}/include/pte.h to just do #include <mips/pte.h>.
jump-table) locore entrypoints, so the stack traceback code can use
the end marker to handle entry points specially when doing tracebacks,
even if it doesn't know about them explicitly.
add catch-all case, with distinct mips1 and mips3 ranges for locore
entry points, cases to catch othewise-unknown locore entrypoints and
vector code (which have special entry sequences and require special
support to trace through). The relevant mips1 and mips3 functions are
of course now distinct.
* Create arch/mips/Makefile.inc with source list of generic MIPS-cpu
files for tags
* Use mips/Makefile.inc and updated tag list in pmax/Makefile
* Try building bootblocks in arch/pmax/stand.
consistency with the way machdep headers for other things are done.
(the creation of the ecoff_machdep.h files was done on the CVS server, to
keep the RCS logs intact.)
macros to use to remove #ifdefs from the machine ID case check.
Eventually, these headers will contain other information, e.g.
machine-dependent relocation information, etc.
in the branch-emulation code was uninitialized, due to a misplaced #endif.
Remove the relevant #ifdef (macro version of GetBranchDest), and move the
XXX note about r4000 branch targets to the function definition.
definitions.
* Include <mips/cpuregs.h> in <cpu.h> so kern_clock.c has user/kernel
status bits in scope. Still needs work; r2k/r4k previous-mode bits
are different.
* Include <mips/mips_param.h> in pica/include/param.h, for locore declarations,
and definitions of vm and other constants that should be shared across
NetBSD/mips systems to esnsure user-level binary compatibility.
which was taken from OpenBSD/pica.
The previous revision of elf.c replaced Ted Lemon's elf exec machinery
with something closer to Christos' MI elf machinery. It turns out
that old NetBSD/pmax elf binaries have three segments, and the newer
elf exec machinery cannot exec them.
The old elf exec machinery is folded back into cpu_exec.c, which falls
back onto using the old machinery if the new machinery fails. The
old-style binaries will be deprecated at the 1.2 release.
* Update arch/mips/mips/cpu_exec.c to include MI exec_elf.h header,
and to use the MI interface exec_elf_makecmds().
* Replace arch/mips/mips/elf.c (Ted Lemon's elf code) with
a version of Christos's MI elf exec code, munged to support demand paging
and mips shared libraries.
it into three pieces:
* locore.S, which contains generic mips locore code,
applicable for both r2000/r3000 and r4000s (in 32-bit mode).
* locore_r2000.S, which contains r2000/r3000 (MIPS-I) versions
of the locore functions that need mips-generation-specific
instructions or handling.
* locore_r4000.S, which contains r4000/r4400/r4600 (MIPS-III?) versions
of the locore functions that need mips-generation-specific
instructions or handling.
Much of the code in locore_r4000.S is derived from Per Fogelstrom's Pica port.
locore.S still contains some pmax-specific DMA-buffer copy functions.
to the mips tree.
* Add declarations of functions used by vm_machdep.c.
* Add declarations of functions printed by name in stack tracebacks.
* Add declarations of functions used by the model-independnet mips machdep.c
code.
symbolic lookup of the CPU-level specific locore entry points to use the
r2k, not the r4k, labels.
Include header files to get prototyped declarations of ipintr() and arpintr().
Remove unused variables and parenthesize assignments in if () expressions.
Gcc warns of a possible && vs || operator-precedence bug in the network
softint dispatch code, which needs more thought.
locore calls to go via a locore-entry jumptable.
Cast the (int) arguments to MachTLBUpdateEntry() to avoid
warnings. Variables TLB entries are still type-punned as either structs
or ints, without any regard, when the pmax-specific VM code passes
them as arguments to functions.
