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272461 |
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02-Oct-2014 |
gjb |
Copy stable/10@r272459 to releng/10.1 as part of the 10.1-RELEASE process.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation |
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256281 |
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10-Oct-2013 |
gjb |
Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation
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209617 |
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30-Jun-2010 |
marcel |
While functions are ideally aligned to a 32-byte boundary, don't assume this to be the case.
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139790 |
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06-Jan-2005 |
imp |
/* -> /*- for copyright notices, minor format tweaks as necessary
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134398 |
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27-Aug-2004 |
marcel |
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
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134289 |
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25-Aug-2004 |
marcel |
Get a step closer to profiling the kernel by fixing the definitions of the MCOUNT_ENTER, MCOUNT_EXIT and MCOUNT_DECL defines. Also make sure there's a prototype of _MCOUNT_DECL(). This allows us to build a kernel. There are still unresolved symbols, so linking fails.
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134287 |
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25-Aug-2004 |
marcel |
Make profiling actually work. The gcc compiler emits a call to the _mcount() stub when profiling is enabled. Emit this code sequence for assembly routines as welli (MCOUNT definition in <machine/asm.h>. We do not pass the GOT entry however as the 4th argument, because it's not used. The _mcount() stub calls __mcount(), which does the actual work. Define _MCOUNT_DECL to define __mcount. We do not have an implementation of mcount(), so we define MCOUNT as empty, but have a weak alias to _mcount() in _mcount.S. Note that the _mcount() stub in the kernel is slightly different from the stub in userland. This is because we do not have to worry about nested routines in the kernel.
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129444 |
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19-May-2004 |
bde |
Moved most of the "MI" definitions and declarations from <machine/profile.h> to <sys/gmon.h>. Cleaned them up a little by not attempting to ifdef for incomplete and out of date support for GUPROF in userland, as in the sparc64 version.
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92870 |
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21-Mar-2002 |
dfr |
Change critical_t to register_t for intr_disable/restore.
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92869 |
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21-Mar-2002 |
dfr |
Change cpu_critical_enter/exit to intr_disable/restore.
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92843 |
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20-Mar-2002 |
alfred |
Remove __P.
Reviewd by: peter
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88088 |
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17-Dec-2001 |
jhb |
Modify the critical section API as follows: - The MD functions critical_enter/exit are renamed to start with a cpu_ prefix. - MI wrapper functions critical_enter/exit maintain a per-thread nesting count and a per-thread critical section saved state set when entering a critical section while at nesting level 0 and restored when exiting to nesting level 0. This moves the saved state out of spin mutexes so that interlocking spin mutexes works properly. - Most low-level MD code that used critical_enter/exit now use cpu_critical_enter/exit. MI code such as device drivers and spin mutexes use the MI wrappers. Note that since the MI wrappers store the state in the current thread, they do not have any return values or arguments. - mtx_intr_enable() is replaced with a constant CRITICAL_FORK which is assigned to curthread->td_savecrit during fork_exit().
Tested on: i386, alpha
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84800 |
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11-Oct-2001 |
dfr |
Implement mcount trampoline (untested).
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66633 |
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04-Oct-2000 |
dfr |
Next round of fixes to the ia64 code. This includes simulated clock and disk drivers along with a load of fixes to context switching, fork handling and a load of other stuff I can't remember now. This takes us as far as start_init() before it dies. I guess now I will have to finish off the VM system and syscall handling :-).
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66458 |
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29-Sep-2000 |
dfr |
This is the first snapshot of the FreeBSD/ia64 kernel. This kernel will not work on any real hardware (or fully work on any simulator). Much more needs to happen before this is actually functional but its nice to see the FreeBSD copyright message appear in the ia64 simulator.
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