| 33 |
|
XDEF _Execute68kTrap |
| 34 |
|
XDEF _TrapHandlerAsm |
| 35 |
|
XDEF _ExceptionHandlerAsm |
| 36 |
– |
XDEF _Scod060Patch1 |
| 37 |
– |
XDEF _Scod060Patch2 |
| 38 |
– |
XDEF _ThInitFPUPatch |
| 36 |
|
XDEF _AsmTriggerNMI |
| 37 |
|
|
| 38 |
|
XREF _OldTrapHandler |
| 241 |
|
rts |
| 242 |
|
|
| 243 |
|
* |
| 247 |
– |
* Process Manager 68060 FPU patches |
| 248 |
– |
* |
| 249 |
– |
|
| 250 |
– |
_Scod060Patch1 fsave -(sp) ;Save FPU state |
| 251 |
– |
tst.b 2(sp) ;Null? |
| 252 |
– |
beq.s 1$ |
| 253 |
– |
fmovem.x fp0-fp7,-(sp) ;No, save FPU registers |
| 254 |
– |
fmove.l fpiar,-(sp) |
| 255 |
– |
fmove.l fpsr,-(sp) |
| 256 |
– |
fmove.l fpcr,-(sp) |
| 257 |
– |
pea -1 ;Push "FPU state saved" flag |
| 258 |
– |
1$ move.l d1,-(sp) |
| 259 |
– |
move.l d0,-(sp) |
| 260 |
– |
bsr.s 3$ ;Switch integer registers and stack |
| 261 |
– |
addq.l #8,sp |
| 262 |
– |
tst.b 2(sp) ;New FPU state null or "FPU state saved" flag set? |
| 263 |
– |
beq.s 2$ |
| 264 |
– |
addq.l #4,sp ;Flag set, skip it |
| 265 |
– |
fmove.l (sp)+,fpcr ;Restore FPU registers and state |
| 266 |
– |
fmove.l (sp)+,fpsr |
| 267 |
– |
fmove.l (sp)+,fpiar |
| 268 |
– |
fmovem.x (sp)+,fp0-fp7 |
| 269 |
– |
2$ frestore (sp)+ |
| 270 |
– |
movem.l (sp)+,d0-d1 |
| 271 |
– |
rts |
| 272 |
– |
|
| 273 |
– |
3$ move.l 4(sp),a0 ;Switch integer registers and stack |
| 274 |
– |
move sr,-(sp) |
| 275 |
– |
movem.l d2-d7/a2-a6,-(sp) |
| 276 |
– |
cmp.w #0,a0 |
| 277 |
– |
beq.s 4$ |
| 278 |
– |
move.l sp,(a0) |
| 279 |
– |
4$ move.l $36(sp),a0 |
| 280 |
– |
movem.l (a0)+,d2-d7/a2-a6 |
| 281 |
– |
move (a0)+,sr |
| 282 |
– |
move.l a0,sp |
| 283 |
– |
rts |
| 284 |
– |
|
| 285 |
– |
_Scod060Patch2 move.l d0,-(sp) ;Create 68060 null frame on stack |
| 286 |
– |
move.l d0,-(sp) |
| 287 |
– |
move.l d0,-(sp) |
| 288 |
– |
frestore (sp)+ ;and load it |
| 289 |
– |
rts |
| 290 |
– |
|
| 291 |
– |
* |
| 292 |
– |
* Thread Manager 68060 FPU patches |
| 293 |
– |
* |
| 294 |
– |
|
| 295 |
– |
_ThInitFPUPatch tst.b $40(a4) |
| 296 |
– |
bne.s 1$ |
| 297 |
– |
moveq #0,d0 ;Create 68060 null frame on stack |
| 298 |
– |
move.l d0,-(a3) |
| 299 |
– |
move.l d0,-(a3) |
| 300 |
– |
move.l d0,-(a3) |
| 301 |
– |
1$ rts |
| 302 |
– |
|
| 303 |
– |
* |
| 244 |
|
* Trap handler of main task |
| 245 |
|
* |
| 246 |
|
|
| 635 |
|
fsavepush move.l (sp),d0 ;Restore d0 |
| 636 |
|
move.l a0,(sp) ;Save a0 |
| 637 |
|
move.l usp,a0 ;Get user stack pointer |
| 638 |
< |
fsave -(a0) ;Push FP state |
| 638 |
> |
move.l #$41000000,-(a0) ;Push idle frame |
| 639 |
|
move.l a0,usp ;Update USP |
| 640 |
|
move.l (sp)+,a0 ;Restore a0 |
| 641 |
|
addq.l #2,2(sp) ;Skip instruction |
| 642 |
|
rte |
| 643 |
|
|
| 644 |
+ |
; fsave xxx(a5) |
| 645 |
+ |
fsavea5 move.l (sp),d0 ;Restore d0 |
| 646 |
+ |
move.l a0,(sp) ;Save a0 |
| 647 |
+ |
move.l a5,a0 ;Get base register |
| 648 |
+ |
add.w ([6,sp],2),a0 ;Add offset to base register |
| 649 |
+ |
move.l #$41000000,(a0) ;Push idle frame |
| 650 |
+ |
move.l (sp)+,a0 ;Restore a0 |
| 651 |
+ |
addq.l #4,2(sp) ;Skip instruction |
| 652 |
+ |
rte |
| 653 |
+ |
|
| 654 |
|
; frestore (sp)+ |
| 655 |
|
frestorepop move.l (sp),d0 ;Restore d0 |
| 656 |
|
move.l a0,(sp) ;Save a0 |
| 657 |
|
move.l usp,a0 ;Get user stack pointer |
| 658 |
< |
frestore (a0)+ ;Restore FP state |
| 658 |
> |
addq.l #4,a0 ;Nothing to do... |
| 659 |
|
move.l a0,usp ;Update USP |
| 660 |
|
move.l (sp)+,a0 ;Restore a0 |
| 661 |
|
addq.l #2,2(sp) ;Skip instruction |
| 662 |
|
rte |
| 663 |
|
|
| 664 |
< |
; frestore xxx(a5) +jl+ |
| 664 |
> |
; frestore xxx(a5) |
| 665 |
|
frestorea5 move.l (sp),d0 ;Restore d0 |
| 666 |
|
move.l a0,(sp) ;Save a0 |
| 717 |
– |
move.l a5,a0 ;Get base register |
| 718 |
– |
add.w ([6,sp],2),a0 ;Add offset to base register |
| 719 |
– |
frestore (a0) ;Restore FP state from (a0) |
| 720 |
– |
move.l (sp)+,a0 ;Restore a0 |
| 721 |
– |
addq.l #4,2(sp) ;Skip instruction |
| 722 |
– |
rte |
| 723 |
– |
|
| 724 |
– |
; fsave xxx(a5) +jl+ |
| 725 |
– |
fsavea5 move.l (sp),d0 ;Restore d0 |
| 726 |
– |
move.l a0,(sp) ;Save a0 |
| 727 |
– |
move.l a5,a0 ;Get base register |
| 728 |
– |
add.w ([6,sp],2),a0 ;Add offset to base register |
| 729 |
– |
fsave (a0) ;Push FP state to (a0) |
| 667 |
|
move.l (sp)+,a0 ;Restore a0 |
| 668 |
|
addq.l #4,2(sp) ;Skip instruction |
| 669 |
|
rte |
