d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Allocate a frame on our initial stack so that it doesn't run off into

Browse Source 
random memory.  Disable interrupts while loading the tlb.

Submitted by:	tmm
This commit is contained in:
Jake Burkholder 2002-02-23 03:38:18 +00:00
parent acfdfd647b
commit 20dc3b11c5
2 changed files with 24 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
sys/boot/sparc64/loader/locore.S
View File

@ -11,7 +11,9 @@
#include <machine/asi.h>
#include <machine/asm.h>
#include <machine/pstate.h>
#include <machine/param.h>
#define PAGE_SIZE 8192
#define PAGE_SHIFT 13
#define SPOFF 2047
#define STACK_SIZE (2 * PAGE_SIZE)
@ -27,7 +29,7 @@ ENTRY(_start)
wrpr %g0, PSTATE_PRIV|PSTATE_IE|PSTATE_PEF, %pstate
wr %g0, 0x4, %fprs
setx stack + STACK_SIZE - SPOFF, %l7, %l6
setx stack + STACK_SIZE - SPOFF - CCFSZ, %l7, %l6
mov %l6, %sp
call main
mov %o4, %o0
@ -85,23 +87,27 @@ ENTRY(dtlb_va_to_pa)
* %o3 = flags
*/
ENTRY(itlb_enter)
rdpr %pstate, %o4
wrpr %o4, PSTATE_IE, %pstate
sllx %o0, 3, %o0
or %o1, %o3, %o1
mov AA_IMMU_TAR, %o3
stxa %o2, [%o3] ASI_IMMU
membar #Sync
stxa %o1, [%o0] ASI_ITLB_DATA_ACCESS_REG
membar #Sync
retl
nop
wrpr %o4, 0, %pstate
ENTRY(dtlb_enter)
rdpr %pstate, %o4
wrpr %o4, PSTATE_IE, %pstate
sllx %o0, 3, %o0
or %o1, %o3, %o1
mov AA_DMMU_TAR, %o3
stxa %o2, [%o3] ASI_DMMU
membar #Sync
stxa %o1, [%o0] ASI_DTLB_DATA_ACCESS_REG
membar #Sync
retl
nop
wrpr %o4, 0, %pstate
.comm stack, STACK_SIZE, 32

18
sys/boot/sparc64/loader/locore.s
View File

@ -11,7 +11,9 @@
#include <machine/asi.h>
#include <machine/asm.h>
#include <machine/pstate.h>
#include <machine/param.h>
#define PAGE_SIZE 8192
#define PAGE_SHIFT 13
#define SPOFF 2047
#define STACK_SIZE (2 * PAGE_SIZE)
@ -27,7 +29,7 @@ ENTRY(_start)
wrpr %g0, PSTATE_PRIV|PSTATE_IE|PSTATE_PEF, %pstate
wr %g0, 0x4, %fprs
setx stack + STACK_SIZE - SPOFF, %l7, %l6
setx stack + STACK_SIZE - SPOFF - CCFSZ, %l7, %l6
mov %l6, %sp
call main
mov %o4, %o0
@ -85,23 +87,27 @@ ENTRY(dtlb_va_to_pa)
* %o3 = flags
*/
ENTRY(itlb_enter)
rdpr %pstate, %o4
wrpr %o4, PSTATE_IE, %pstate
sllx %o0, 3, %o0
or %o1, %o3, %o1
mov AA_IMMU_TAR, %o3
stxa %o2, [%o3] ASI_IMMU
membar #Sync
stxa %o1, [%o0] ASI_ITLB_DATA_ACCESS_REG
membar #Sync
retl
nop
wrpr %o4, 0, %pstate
ENTRY(dtlb_enter)
rdpr %pstate, %o4
wrpr %o4, PSTATE_IE, %pstate
sllx %o0, 3, %o0
or %o1, %o3, %o1
mov AA_DMMU_TAR, %o3
stxa %o2, [%o3] ASI_DMMU
membar #Sync
stxa %o1, [%o0] ASI_DTLB_DATA_ACCESS_REG
membar #Sync
retl
nop
wrpr %o4, 0, %pstate
.comm stack, STACK_SIZE, 32