Fix OS_ReadSysInfo 7 to record prefetch abort details

OS_ReadSysInfo 7 is meant to record the details of the last data or
prefetch abort that was passed to the environment handlers. This was
implemented in Ursula, but the code for recording the prefetch abort
details got lost somewhere during the 32 bit conversion process. Restore
it.

s/Exceptions

@@ -18,11 +18,11 @@
 ;
 ;       Exception veneers
 
- [ AMB_LazyMapIn
-;  Instruction fetch abort pre-veneer, just to field possible lazy AMB aborts
+;  Instruction fetch abort pre-veneer
 ;
 PAbPreVeneer    ROUT
         Push    "r0-r7, lr"               ; wahey, we have an abort stack
+ [ AMB_LazyMapIn
         SUB     r0, lr_abort, #4          ; aborting address
         MOV     r2, #1
         BL      AMB_LazyFixUp             ; can trash r0-r7, returns NE status if claimed and fixed up
@@ -31,11 +31,18 @@ PAbPreVeneer    ROUT
         SUBNES  pc, lr_abort, #4          ; restart aborting instruction if fixed up
         BL      AMB_MakeFullyHonest       ; PAbHan might not support recursive aborts
         LDR     lr, [sp, #8*4]            ; (not a lazy abort) restore lr
+ ]
+        ; Remember the details of this abort, for OS_ReadSysInfo 7
+        LDR     r4, =ZeroPage+Abort32_dumparea
+        MSR     SPSR_cxsf, r1
+        STR     lr, [r4]                  ; dump 32-bit PC
+        STR     r1, [r4, #4]              ; dump 32-bit PSR
+        STR     lr, [r4, #2*4]            ; fault address is PC (yes, PC, not PC-4)
+
         LDR     r0, =ZeroPage+PAbHan      ; we want to jump to PAb handler, in abort mode
         LDR     r0, [r0]
         STR     r0, [sp, #8*4]
         Pull    "r0-r7, pc"
- ]
 
 
 DAbPreVeneer    ROUT

s/Kernel

@@ -376,12 +376,7 @@ DefaultProcVecs
 DefaultPreVeneers
 UndPreVeneer    *       ZeroPage+ProcVecPreVeneers+(.-DefaultPreVeneers)
         LDR     PC, DefaultPreVeneers-ProcVecPreVeneers+UndHan
-   [ AMB_LazyMapIn
         DCD     0
-   |
-PAbPreVeneer    *       ZeroPage+ProcVecPreVeneers+(.-DefaultPreVeneers)
-        LDR     PC, DefaultPreVeneers-ProcVecPreVeneers+PAbHan
-   ]
         DCD     0
 AdXPreVeneer    *       ZeroPage+ProcVecPreVeneers+(.-DefaultPreVeneers)
         LDR     PC, DefaultPreVeneers-ProcVecPreVeneers+AdXHan