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Invoke trap() for the alt. ITLB and alt. DTLB interrrupts when

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the region is not 6 or 7. This changes the behaviour from
inserting a bogus region 6 mapping to a kernel panic.
This commit is contained in:
marcel 2001-11-12 07:08:45 +00:00
parent ccaaa4c491
commit bf46dc27d6
2 changed files with 16 additions and 2 deletions
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9
sys/ia64/ia64/exception.S
View File

@ -234,12 +234,13 @@ interruption_Data_TLB:
.org ia64_vector_table + 0x0c00 // Alternate ITLB vector
interruption_Alternate_Instruction_TLB:
mov r16=cr.ifa // where did it happen
;;
mov r18=pr // save predicates
;;
extr.u r17=r16,61,3 // get region number
;;
cmp.ge p3,p0=5,r17 // RR0-RR5?
cmp.eq p1,p2=7,r17 // RR7->p1, RR6->p2
(p3) br.spnt 9f
;;
(p1) movl r17=PTE_P+PTE_MA_WB+PTE_A+PTE_D+PTE_PL_KERN+PTE_AR_RX
(p2) movl r17=PTE_P+PTE_MA_UC+PTE_A+PTE_D+PTE_PL_KERN+PTE_AR_RX
@ -252,6 +253,8 @@ interruption_Alternate_Instruction_TLB:
mov pr=r18,0x1ffff // restore predicates
;;
rfi
9: mov pr=r18,0x1ffff // restore predicates
TRAP(3)
.org ia64_vector_table + 0x1000 // Alternate DTLB vector
interruption_Alternate_Data_TLB:
@ -260,7 +263,9 @@ interruption_Alternate_Data_TLB:
;;
extr.u r17=r16,61,3 // get region number
;;
cmp.ge p3,p0=5,r17 // RR0-RR5?
cmp.eq p1,p2=7,r17 // RR7->p1, RR6->p2
(p3) br.spnt 9f
;;
(p1) movl r17=PTE_P+PTE_MA_WB+PTE_A+PTE_D+PTE_PL_KERN+PTE_AR_RW
(p2) movl r17=PTE_P+PTE_MA_UC+PTE_A+PTE_D+PTE_PL_KERN+PTE_AR_RW
@ -273,6 +278,8 @@ interruption_Alternate_Data_TLB:
mov pr=r18,0x1ffff // restore predicates
;;
rfi
9: mov pr=r18,0x1ffff // restore predicates
TRAP(4)
.org ia64_vector_table + 0x1400 // Data Nested TLB vector
interruption_Data_Nested_TLB:

9
sys/ia64/ia64/exception.s
View File

@ -234,12 +234,13 @@ interruption_Data_TLB:
.org ia64_vector_table + 0x0c00 // Alternate ITLB vector
interruption_Alternate_Instruction_TLB:
mov r16=cr.ifa // where did it happen
;;
mov r18=pr // save predicates
;;
extr.u r17=r16,61,3 // get region number
;;
cmp.ge p3,p0=5,r17 // RR0-RR5?
cmp.eq p1,p2=7,r17 // RR7->p1, RR6->p2
(p3) br.spnt 9f
;;
(p1) movl r17=PTE_P+PTE_MA_WB+PTE_A+PTE_D+PTE_PL_KERN+PTE_AR_RX
(p2) movl r17=PTE_P+PTE_MA_UC+PTE_A+PTE_D+PTE_PL_KERN+PTE_AR_RX
@ -252,6 +253,8 @@ interruption_Alternate_Instruction_TLB:
mov pr=r18,0x1ffff // restore predicates
;;
rfi
9: mov pr=r18,0x1ffff // restore predicates
TRAP(3)
.org ia64_vector_table + 0x1000 // Alternate DTLB vector
interruption_Alternate_Data_TLB:
@ -260,7 +263,9 @@ interruption_Alternate_Data_TLB:
;;
extr.u r17=r16,61,3 // get region number
;;
cmp.ge p3,p0=5,r17 // RR0-RR5?
cmp.eq p1,p2=7,r17 // RR7->p1, RR6->p2
(p3) br.spnt 9f
;;
(p1) movl r17=PTE_P+PTE_MA_WB+PTE_A+PTE_D+PTE_PL_KERN+PTE_AR_RW
(p2) movl r17=PTE_P+PTE_MA_UC+PTE_A+PTE_D+PTE_PL_KERN+PTE_AR_RW
@ -273,6 +278,8 @@ interruption_Alternate_Data_TLB:
mov pr=r18,0x1ffff // restore predicates
;;
rfi
9: mov pr=r18,0x1ffff // restore predicates
TRAP(4)
.org ia64_vector_table + 0x1400 // Data Nested TLB vector
interruption_Data_Nested_TLB: