libhurd-mm/

2008-06-16  Neal H. Walfield  <neal@gnu.org>

	* map.h: New file.
	* map.c: New file.
	* Makefile.am (libhurd_mm_a_SOURCES): Add map.h and map.c.
	* headers.m4: Link map.h to sysroot/include/hurd/map.h.
	* pager.h: Rewrite.
	* pager.c: Likewise.
	* anonymous.h (ANONYMOUS_STAGING_AREA): New define.
	(anonymous_pager_fill_t): Don't pass the base of the region.  Pass
	the location of the storage corresponding to the pages on which
	the faults were raised and the offset into the region.  Update
	users.
	(struct anonymous_pager): Add fields map_area, map_area_count and
	lock.  Remove field alloced_region.
	(anonymous_pager_alloc): Replace size parameter with length
	parameter.  Take access parameter indicating the desired access.
	Update users.
	* anonymous.c (offset_compare): Compare the values, not the
	pointers.
	(fault): Update signature to be consistent with new API.  Lock
	ANON->LOCK.  Always look up the storage descriptor corresponding
	to the faulted page.  Copy the storage to the faulted address as
	required.  Update how we call ANON->FILL to be consistent with the
	new API.
	(destroy): Free ANON->STAGING_AREA.
	(anonymous_pager_alloc): Update signature to be consistent with
	new API.  Allocate the staging area if ANONYMOUS_STAGING_AREA is
	set.  Allocate it separately from the main map.  Create a map
	corresponding to the region.
	(anonymous_pager_destroy): Just lock ANON->LOCK.  Don't call
	destroy, call pager_deinit.
	* mmap.c: Include <hurd/map.h>.
	(mmap): Add support for protection other than read/write.
	(munmap): Rewrite to use new API.  Use map_split to support
	splitting of memory maps.
	* exceptions.c: Don't include "pager.h", include "map.h".
	(exception_handler_normal): Don't call pager_fault but map_fault.
	(exception_handler_activated): Likewise.

ruth/

2008-06-16  Neal H. Walfield  <neal@gnu.org>

	* ruth.c (main): Improve mmap test.  Update use of
	anonymous_pager_alloc to be consistent with new API.  Update fill
	functions to be consistent with new API.  Remove redundant test.

benchmarks/

2008-06-16  Neal H. Walfield  <neal@gnu.org>

	* activity-distribution.c (main): Update use of
	anonymous_pager_alloc to be consistent with new API.  Update fill
	functions to be consistent with new API.

1 files changed, 19 insertions, 5 deletions

diff --git a/libhurd-mm/exceptions.c b/libhurd-mm/exceptions.c
index afdd10e..2eede5f 100644
--- a/libhurd-mm/exceptions.c
+++ b/libhurd-mm/exceptions.c
@@ -29,7 +29,7 @@
 #include <signal.h>
 #include <string.h>
 
-#include "pager.h"
+#include "map.h"
 #include "as.h"
 
 extern struct hurd_startup_data *__hurd_startup_data;
@@ -190,11 +190,25 @@ exception_handler_normal (struct exception_frame *exception_frame)
 	if (err)
 	  panic ("Failed to unmarshal exception: %d", err);
 
-	bool r = pager_fault (fault, ip, info);
+	bool r = map_fault (fault, ip, info);
 	if (! r)
 	  {
-	    debug (0, "Fault at " ADDR_FMT " (ip: %p)",
-		   ADDR_PRINTF (fault), ip);
+	    debug (0, "SIGSEGV at " ADDR_FMT " (ip: %p, sp: %p, eax: %p, ecx: %p, edx: %p, eflags: %p)",
+		   ADDR_PRINTF (fault), ip, sp,
+		   exception_frame->regs[0],
+		   exception_frame->regs[1],
+		   exception_frame->regs[2],
+		   exception_frame->regs[3]);
+
+	    extern int backtrace (void **array, int size);
+
+	    void *a[20];
+	    int count = backtrace (a, sizeof (a) / sizeof (a[0]));
+	    int i;
+	    s_printf ("Backtrace: ");
+	    for (i = 0; i < count; i ++)
+	      s_printf ("%p ", a[i]);
+	    s_printf ("\n");
 
 	    siginfo_t si;
 	    memset (&si, 0, sizeof (si));
@@ -279,7 +293,7 @@ exception_handler_activated (struct exception_page *exception_page)
 		   "(ip: %x, sp: %x).",
 		   ADDR_PRINTF (fault), ip, sp);
 
-	    bool r = pager_fault (fault, ip, info);
+	    bool r = map_fault (fault, ip, info);
 	    if (! r)
 	      {
 		debug (0, "Fault at " ADDR_FMT " (ip: %p)",