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Commit Graph

116 Commits

Author SHA1 Message Date
Joerg Wunsch
a5f50ef9e4 netchild's mega-patch to isolate compiler dependencies into a central
place.

This moves the dependency on GCC's and other compiler's features into
the central sys/cdefs.h file, while the individual source files can
then refer to #ifdef __COMPILER_FEATURE_FOO where they by now used to
refer to #if __GNUC__ > 3.1415 && __BARC__ <= 42.

By now, GCC and ICC (the Intel compiler) have been actively tested on
IA32 platforms by netchild.  Extension to other compilers is supposed
to be possible, of course.

Submitted by:	netchild
Reviewed by:	various developers on arch@, some time ago
2005-03-02 21:33:29 +00:00
Olivier Houchard
f4c01f1508 Instead of using sysarch() to store-retrieve the tp, add a magic address,
ARM_TP_ADDRESS, where the tp will be stored. On CPUs that support it, a cache
line will be allocated and locked for this address, so that it will never go
to RAM. On CPUs that does not, a page is allocated for it (it will be a bit
slower, and is wrong for SMP, but should be fine for UP).
The tp is still stored in the mdthread struct, and at each context switch,
ARM_TP_ADDRESS gets updated.

Suggested by:   davidxu
2005-02-26 18:59:01 +00:00
Olivier Houchard
b6e4194946 Add the field in the md part of the struct thread required by ARM_[GET|SET]_TP. 2005-02-26 00:02:14 +00:00
Olivier Houchard
a74985cdd4 Implement two new sysarch for arm, ARM_GET_TP and ARM_SET_TP, to work around
the lack of tls on arm.
2005-02-25 22:56:16 +00:00
Ruslan Ermilov
3971d2cf5e Use a common multi-inclusion protection, and add such a
protection to alpha/include/exec.h.
2005-02-19 21:16:48 +00:00
Olivier Houchard
31d0686d2d Define NIRQ to 64 for CPU_ARM9, because Cirrus Logic EP93XX cores provides
64 irqs.
This should be re-thought later.
2005-02-13 18:26:31 +00:00
Nate Lawson
3d7d8f614b Sort functions. 2005-02-01 06:36:27 +00:00
Olivier Houchard
12a58da422 Start to support the big endian case as well. 2005-01-18 15:51:50 +00:00
Olivier Houchard
34c8913825 Add the prototype for bus_dmamap_load_mbuf_sg().
Spotted out by:	scottl
2005-01-15 19:31:08 +00:00
Olivier Houchard
9026d36c6e Add support for ptrace() and gdb breakpoints. 2005-01-10 22:43:16 +00:00
Warner Losh
d8315c79d9 Start all license statements with /*- 2005-01-05 21:58:49 +00:00
Olivier Houchard
31e3e209b1 Make sure gcc doesn't generate something such as swp r3, r4, [r3] for __swp,
as it has unpredictable results.
2004-12-18 17:43:01 +00:00
Olivier Houchard
b62e66eb1f Remove an unused field from the struct pv_entry.
While I'm there, fix style.
2004-12-05 22:46:30 +00:00
Olivier Houchard
9ebe15a1d7 Implement breakpoints and single stepping on arm.
Obtained from:	NetBSD
2004-11-21 18:11:39 +00:00
Olivier Houchard
3488a2f7d9 Implement enough to be able to enter and leave DDB. 2004-11-20 16:52:10 +00:00
Olivier Houchard
579d53f4cf Get the kernel stack right now that the u-area is gone. 2004-11-20 16:51:32 +00:00
David Schultz
d305a6da98 Remove UAREA_PAGES and USPACE definitions. The definitions of
USPACE_SVC_STACK_TOP, USPACE_SVC_STACK_BOTTOM, USPACE_UNDEF_STACK_TOP,
and USPACE_UNDEF_STACK_BOTTOM look wrong to me, so I'm leaving them
alone.

Reviewed by:	arch@
2004-11-20 02:31:37 +00:00
Olivier Houchard
5f2c6402db Import a RET macro, that will use bx if the arch supports it.
Obtained from:	NetBSD
2004-11-09 16:45:55 +00:00
Olivier Houchard
e099742e25 Import md bits for mem(4) on arm.
While I'm there, cleanup a bit pmap.h.
2004-11-07 23:01:36 +00:00
Olivier Houchard
432f5e3ab9 Disable interrupts for atomic_cmpset_32, this one is just not atomic.
Don't export it to userland.
2004-11-05 23:48:12 +00:00
Olivier Houchard
6e91e74e11 Protect the function declarations with #ifdef _KERNEL. 2004-11-04 19:20:54 +00:00
Olivier Houchard
56c6c84155 Directly use __pcpu for PCPU_* instead of pcpup. 2004-11-04 19:19:44 +00:00
Olivier Houchard
27d97a6c49 Decrease KSTACK_PAGES and UAREA_PAGES. 2004-11-04 19:19:21 +00:00
Olivier Houchard
24e01b0c59 Use interrupts_disable() and interrupts_restore() as intr_disable() and
intr_restore() instead of re-implement it.
2004-11-04 19:18:50 +00:00
Olivier Houchard
dba13dd1d3 Don't barf if no CPU type is defined while compiling kernel modules. 2004-11-04 19:16:31 +00:00
Olivier Houchard
3ce6572f9f Implement get_cyclecount(). 2004-11-04 19:15:43 +00:00
Olivier Houchard
a61369085e Try to implement atomic operations using swp, instead of disabling interrupts. 2004-11-04 19:14:50 +00:00
Olivier Houchard
eeaa69102a Use casts to enforce the return type of bswap16() and bswap32(). 2004-11-04 19:07:28 +00:00
Olivier Houchard
74e9b5ed3b Add optimized version of the bswap macroes for constants if __OPTIMIZED__ is
defined.
2004-10-01 16:55:59 +00:00
Olivier Houchard
1f5f31b4ec Remove the empty definition of struct osigcontext, as it will never be used. 2004-09-23 22:31:49 +00:00
Olivier Houchard
7ea7271711 Remove the pcb32_cstate field of struct pcb. 2004-09-23 22:31:08 +00:00
Olivier Houchard
f04d49ad11 Declare sigcode and szsigcode. 2004-09-23 22:30:05 +00:00
Olivier Houchard
9f0f6bf453 Define VM_PROT_READ_IS_EXEC. 2004-09-23 22:29:43 +00:00
Olivier Houchard
ffa589bf15 Implement _mcount().
Obtained from:	NetBSD
2004-09-23 22:29:18 +00:00
Olivier Houchard
c038ee8196 Define STACKALIGNBYTES and STACKALIGN. 2004-09-23 22:27:42 +00:00
Olivier Houchard
a40d2bb653 We are using _mcount, not __mcount.
Remove the !__ELF__ case.
2004-09-23 22:26:29 +00:00
Olivier Houchard
7c320e5bfb Add new functions to know which irqs are pending, and to mask and unmask
interrupts, as these are CPU specific.
If the interrupt handler is not marked as INTR_FAST, don't unmask the
interrupt until it as been serviced.
2004-09-23 22:09:57 +00:00
Olivier Houchard
1e82631893 Rename macroes, as we don't need to mess with alignment faults.
Call ast() if TDF_NEEDRESCHED is set too, not just TDF_ASTPENDING.
2004-09-23 22:05:40 +00:00
Olivier Houchard
a5bb1c8501 Remove bus_space_vaddr(), it does not exists in FreeBSD. 2004-09-23 21:59:14 +00:00
Olivier Houchard
371853e562 Add MD syscalls to sync the icache and to drain the write buffer.
Obtained from:	NetBSD
2004-09-23 21:56:01 +00:00
Olivier Houchard
8e90166a08 Implement pmap_growkernel() and pmap_extract_and_hold().
Remove the cache state logic : right now, it provides more problems than it
helps.
Add helper functions for mapping devices while bootstrapping.
Reorganize the code a bit, and remove dead code.

Obtained from:	NetBSD (partially)
2004-09-23 21:54:25 +00:00
Marcel Moolenaar
0f2fe153bc Move the kernel-specific logic to adjust frompc from MI to MD. For
these two reasons:
1. On ia64 a function pointer does not hold the address of the first
   instruction of a functions implementation. It holds the address
   of a function descriptor. Hence the user(), btrap(), eintr() and
   bintr() prototypes are wrong for getting the actual code address.
2. The logic forces interrupt, trap and exception entry points to
   be layed-out contiguously. This can not be achieved on ia64 and is
   generally just bad programming.

The MCOUNT_FROMPC_USER macro is used to set the frompc argument to
some kernel address which represents any frompc that falls outside
the kernel text range. The macro can expand to ~0U to bail out in
that case.
The MCOUNT_FROMPC_INTR macro is used to set the frompc argument to
some kernel address to represent a call to a trap or interrupt
handler. This to avoid that the trap or interrupt handler appear to
be called from everywhere in the call graph. The macro can expand
to ~0U to prevent adjusting frompc. Note that the argument is selfpc,
not frompc.

This commit defines the macros on all architectures equivalently to
the original code in sys/libkern/mcount.c. People can take it from
here...

Compile-tested on: alpha, amd64, i386, ia64 and sparc64
Boot-tested on: i386
2004-08-27 19:42:35 +00:00
Maxime Henrion
9f1b87f106 Instead of calling ia32_pause() conditionally on __i386__ or __amd64__
being defined, define and use a new MD macro, cpu_spinwait().  It only
expands to something on i386 and amd64, so the compiled code should be
identical.

Name of the macro found by:	jhb
Reviewed by:	jhb
2004-08-03 18:44:27 +00:00
Olivier Houchard
9b60f79d2a *blush*
Fix htonl and htons.
2004-08-02 12:24:18 +00:00
Olivier Houchard
5b17d1f95a Fix comments.
Spotted out by:	mux
2004-08-02 12:23:53 +00:00
Robert Watson
76e8a01fc9 Correct typo in prior commit: s/cd/td/ 2004-07-27 19:44:08 +00:00
Robert Watson
1a8cfbc450 Pass a thread argument into cpu_critical_{enter,exit}() rather than
dereference curthread.  It is called only from critical_{enter,exit}(),
which already dereferences curthread.  This doesn't seem to affect SMP
performance in my benchmarks, but improves MySQL transaction throughput
by about 1% on UP on my Xeon.

Head nodding:	jhb, bmilekic
2004-07-27 16:41:01 +00:00
Olivier Houchard
c5f7772fe7 Do not declare curpcb. 2004-07-21 22:04:32 +00:00
Olivier Houchard
6933f3a5ca Define pmap_page_is_mapped(). 2004-07-21 22:02:48 +00:00
Olivier Houchard
be687a0dda Nuke disable_intr() and enable_intr(), as it already exists elsewhere. 2004-07-20 22:38:46 +00:00