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added (very ugly) mchar macro

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This commit is contained in:
Markus Fröschle
2012-10-13 05:42:48 +00:00
parent 44b4495c01
commit 953681fd21
1 changed files with 51 additions and 20 deletions
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65
sources/exceptions.S
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@@ -44,7 +44,7 @@
#define MCF_PSC3_PSCRB_8BIT ___MBAR+0x890C
#define MCF_PSC3_PSCTB_8BIT ___MBAR+0x890C
.public _vec_init
.global _vec_init
//mmu ---------------------------------------------------
/* Register read/write macros */
@@ -124,7 +124,12 @@
/**********************************************************/
// macros
/**********************************************************/
irq: .macro vector,int_mask,clr_int
.altmacro
.macro irq vector,int_mask,clr_int
local irq_protect
local sev_supint
local irq_end
move.w #0x2700,sr // disable interrupt
subq.l #8,a7
movem.l d0/a5,(a7) // register sichern
@@ -133,17 +138,17 @@ irq: .macro vector,int_mask,clr_int
// 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 zur<EFBFBD>ck
addq.l #8,a7
move.l vector,-(a7)
move #0x2\200,sr
move.l \vector,-(a7)
move #0x2200,sr
rts
@irq_protect:
irq_protect:
move.l usp,a5 // usp holen
tst.b _rt_mod // supervisor?
bne @sev_supint // ja ->
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
@@ -155,8 +160,8 @@ irq: .macro vector,int_mask,clr_int
move.l 12(a7),-(a5) // pc verschieben
move.w 10(a7),-(a5) // sr verschieben
#endif
bra @irq_end
@sev_supint:
bra irq_end
sev_supint:
#ifdef cf_stack
move.l 12(a7),-(a5) // pc transferieren
move.l 8(a7),-(a5) // sr,vec
@@ -167,17 +172,37 @@ irq: .macro vector,int_mask,clr_int
move.w 10(a7),-(a5) // sr verschieben
bset #5,(a5) // auf super
#endif
@irq_end:
irq_end:
move.l a5,usp // usp setzen
lea vector,a5
adda.l _rt_vbr,a5
move.l (a5),12(a7) // vectoradresse eintragen
move.b #int_mask,10(a7) // intmaske setzen
move.b #\int_mask,10(a7) // intmaske setzen
movem.l (a7),d0/a5 // register zur<EFBFBD>ck
addq.l #8,a7
rte // und weg
.endm
/*********************************************************/
/*
* FIXME: ugly, but I just can't come up with any smarter solution
*
* GNU as does not support multi-character constants. At least I don't know of any way it would.
* The following might look more than strange, but I considered the statement
*
* mchar move.l, 'T,'E,'S,'T,-(SP)
*
* somewhat more readable than
*
* move.l #1413829460,-(SP)
*
* If anybody knows of any better way on how to do this - please do!
*
*/
.macro mchar st,a,b,c,d,tgt
\st #\a << 24|\b<<16|\c<<8|\d,\tgt
.endm
.text
_vec_init:
mov3q.l #-1,_rt_mod // rt_mod auf super
@@ -593,8 +618,10 @@ acsi_dma: // atari dma
move.l d1,-(a7)
lea MCF_PSC0_PSCTB_8BIT,a1 // ++ vr
move.l #'DMA ',(a1)
move.l #'INT!',(a1)
mchar move.l, 'D,'M','A,'\ ,(a1)
//move.l #"DMA ",(a1)
mchar move.l,'I,'N,'T,'!,(a1)
// move.l #'INT!',(a1)
lea 0xf0020110,a5 // fifo daten
acsi_dma_start:
@@ -683,10 +710,14 @@ psc3:
bne psc3_fertig
lea MCF_PSC0_PSCTB_8BIT,a0 // ++ vr
move.l #'PIC ',(a0)
move.l #'INT ',(a0)
move.l #'RTC!',(a0)
move.l #0x0d0a,(a0)
mchar move.l,'\P,'\I,'C,' ,(a0)
// move.l #'PIC ',(a0)
mchar move.l,'I,'N,'T,'\ ,(a0)
// move.l #'INT ',(a0)
mchar move.l,'R,'T,'C,'!,(a0)
// move.l #'RTC!',(a0)
mchar move.l,0x0d,0x0a,0,0,(a0)
//move.l #0x0d0a,(a0)
lea 0xffff8961,a0
lea MCF_PSC3_PSCTB_8BIT,a3