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This commit is contained in:
Markus Fröschle
2013-05-11 21:22:06 +00:00
parent a862b1e140
commit 5f66035f8b
3 changed files with 62 additions and 56 deletions
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52
BaS_gcc/sources/exceptions.S
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@@ -132,31 +132,31 @@
move.w #0x2700,sr // disable interrupt
subq.l #8,a7
movem.l d0/a5,(a7) // register sichern
movem.l d0/a5,(a7) // save registers
lea MCF_EPORT_EPFR,a5
move.b #\clr_int,(a5) // clear int pending
// test auf protect mode ---------------------
move.b DIP_SWITCHa,d0
btst #7,d0
bne irq_protect // ja->
bne irq_protect // ja->
// -------------------------------------------
movem.l (a7),d0/a5 // register zurück
movem.l (a7),d0/a5 // restore registers
addq.l #8,a7
move.l \vector,-(a7)
move #0x2\int_mask\()00,sr
rts
irq_protect:
move.l usp,a5 // usp holen
tst.b _rt_mod // supervisor?
bne sev_supint // ja ->
mov3q.l #-1,_rt_mod // auf supervisor setzen
move.l a5,_rt_usp // rt_usp speichern
move.l _rt_ssp,a5 // rt_ssp holen
move.l usp,a5 // get usp
tst.b _rt_mod // supervisor mode active?
bne sev_supint // yes ->
mov3q.l #-1,_rt_mod // enable supervisor mode
move.l a5,_rt_usp // save rt_usp
move.l _rt_ssp,a5 // get rt_ssp
#ifdef cf_stack
move.l 12(a7),-(a5) // pc transferieren
move.l 12(a7),-(a5) // transfer pc
move.l 8(a7),-(a5) // sr,vec
#else
move.w 8(a7),-(a5) // vector nr.
move.w 8(a7),-(a5) // vector no
move.l 12(a7),-(a5) // pc verschieben
move.w 10(a7),-(a5) // sr verschieben
#endif
@@ -210,15 +210,15 @@ _vec_init:
clr.l _rt_ssp
clr.l _rt_usp
clr.l _rt_vbr
move.l #__RAMBAR0,d0 // sind in rambar0
move.l #__RAMBAR0,d0 // exception vectors reside in rambar0
movec d0,VBR
move.l d0,a0
move.l a0,a2
init_vec:
move.l #256,d0
lea std_exc_vec(pc),a1 // standard vector
lea std_exc_vec(pc),a1 // standard vector
init_vec_loop:
move.l a1,(a2)+ // mal standard vector f<EFBFBD>r alle setzen
move.l a1,(a2)+ // set standard vector for all exceptions
subq.l #1,d0
bne init_vec_loop
@@ -266,6 +266,8 @@ init_vec_loop:
move.l a1,0xdc(a0)
no_protect_vectors:
// trap #0 (without any parameters for now) is used to provide BaS' XHDI
// routine address to EmuTOS.
lea _xhdi_sd_install,a1
move.l a1,0x80(a0) // trap #0 exception vector
@@ -363,14 +365,14 @@ sev_sup:
add.l _rt_vbr,d0 // + basis
move.l d0,a5
move.l (a5),12(a7) // hier geht's weiter
movem.l (a7),d0/a5 // register zur<EFBFBD>ck
movem.l (a7),d0/a5 // register zurück
addq.l #8,a7
rte // und weg
//*******************************************
reset_vector:
move.w #0x2700,sr // disable interrupt
move.l #0x31415926,d0
cmp.l 0x426,d0 // reset vector g<EFBFBD>ltg?
cmp.l 0x426,d0 // reset vector gültg?
beq std_exc_vec // ja->
jmp _rom_entry // sonst kaltstart
acess:
@@ -470,7 +472,7 @@ irq6: // mfp
// test auf timeout screen adr change -------------------------------------------------------
move.l _video_sbt,d0
beq irq6_non_sca // wenn 0 nichts zu tun
sub.l #0x70000000,d0 // 14 sec abz<EFBFBD>hlen
sub.l #0x70000000,d0 // 14 sec abzählen
lea MCF_SLT0_SCNT,a5
cmp.l (a5),d0 // aktuelle zeit weg
ble irq6_non_sca // noch nicht abgelaufen
@@ -490,13 +492,13 @@ irq6: // mfp
swap d4
move.l d4,MCF_MMU_MMUAR
mvz.w #0x10e,d4
move.l d4,MCF_MMU_MMUOR // eintr<EFBFBD>ge holen aus mmu
move.l d4,MCF_MMU_MMUOR // einträge holen aus mmu
nop
move.l MCF_MMU_MMUTR,d4 // ID holen
lsr.l #2,d4 // bit 9 bis 2
cmp.w #sca_page_ID,d4 // ist screen change ID?
bne irq6_sca_pn // nein -> page keine screen area next
// eintrag <EFBFBD>ndern
// eintrag <EFBFBD>ndern
add.l #std_mmutr,d0
move.l d3,d1 // page 0?
beq irq6_sca_pn0 // ja ->
@@ -530,9 +532,9 @@ irq6_sca_pn:
move.l #0x2000,d0
move.l d0,_video_tlb // anfangszustand wieder herstellen
clr.l _video_sbt // zeit l<EFBFBD>schen
clr.l _video_sbt // zeit löschen
movem.l (a7),d0-d4/a0-a1 // register zur<EFBFBD>ck
movem.l (a7),d0-d4/a0-a1 // register zurück
lea 28(a7),a7
irq6_non_sca:
// test auf acsi dma -----------------------------------------------------------------
@@ -569,9 +571,9 @@ irq6_2:
move.l 0xF0020000,a5 // vector holen
add.l _rt_vbr,a5 // basis
move.l (a5),d0 // vector holen
move.l 4(a7),a5 // a5 zur<EFBFBD>ck
move.l 4(a7),a5 // a5 zurück
move.l d0,4(a7) // vector eintragen
move.l (a7)+,d0 // d0 zur<EFBFBD>ck
move.l (a7)+,d0 // d0 zurück
move #0x2600,sr
rts
irq6_3:
@@ -593,7 +595,7 @@ irq6_3:
move.l 0xF0020000,a5 // vector holen: intack routine
add.l _rt_vbr,a5 // virtuelle VBR des Systems
move.l (a5),12(a7) // hier gehts weiter
movem.l (a7),d0/a5 // register zur<EFBFBD>ck
movem.l (a7),d0/a5 // register zurück
addq.l #8,a7
move.b #6,2(a7) // intmaske setzen
rte // und weg
@@ -612,7 +614,7 @@ sev_sup6:
move.l 0xF0020000,a5 // vector holen: intack routine
add.l _rt_vbr,a5 // virtuelle VBR des Systems
move.l (a5),12(a7) // hier gehts weiter
movem.l (a7),d0/a5 // register zur<EFBFBD>ck
movem.l (a7),d0/a5 // register zurück
rts
.data