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fixed call stack for MCD_start_DMA()

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This commit is contained in:
Markus Fröschle
2013-08-10 05:31:49 +00:00
parent 84477cc4d6
commit 982aeea2f9
1 changed files with 982 additions and 980 deletions
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16
BaS_gcc/sources/exceptions.S
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@@ -610,18 +610,18 @@ irq6_sca_pn1c:
// experiment: do video page copy using Coldfire DMA
clr.l -(sp) // no special functions
move.l MCD_SINGLE_DMA|MCD_TT_FLAGS_CW|MCD_TT_FLAGS_RL|MCD_TT_FLAGS_SP,-(sp)
move.l #MCD_SINGLE_DMA|MCD_TT_FLAGS_CW|MCD_TT_FLAGS_RL|MCD_TT_FLAGS_SP,-(sp)
mov3q #7,-(sp) // highest DMA priority
move.l #DMA_ALWAYS,-(sp) // do memory to memory DMA
move.l #4,-(sp) // copy 4 bytes at a time
move.l #0x100000,-(sp) // copy 1 Megabyte
move.w #4,-(sp) // destination increment
mov3q #4,-(sp) // destination increment
move.l a1,-(sp) // destination adress
move.w #4,-(sp) // source increment
mov3q #4,-(sp) // source increment
move.l a0,-(sp) // source adress
mov3q #1,-(sp) // channel 1
jsr _MCD_startDma
lea 10 * 4(sp),sp // adjust stack
lea 11 * 4(sp),sp // adjust stack
// intentionally no wait for the DMA to finish
#else
@@ -910,19 +910,21 @@ video_copy_data:
// experiment: do video page copy using Coldfire DMA
move.l d0,-(sp) // save d0
clr.l -(sp) // no special functions
move.l MCD_SINGLE_DMA|MCD_TT_FLAGS_CW|MCD_TT_FLAGS_RL|MCD_TT_FLAGS_SP,-(sp)
mov3q #7,-(sp) // highest DMA priority
move.l #DMA_ALWAYS,-(sp) // do memory to memory DMA
move.l #4,-(sp) // copy 4 bytes at a time
move.l #0x100000,-(sp) // copy 1 Megabyte
move.w #4,-(sp) // destination increment
mov3q #4,-(sp) // destination increment
move.l a1,-(sp) // destination adress
move.w #4,-(sp) // source increment
mov3q #4,-(sp) // source increment
move.l a0,-(sp) // source adress
mov3q #1,-(sp) // channel 1
jsr _MCD_startDma
lea 10 * 4(sp),sp // adjust stack
lea 11 * 4(sp),sp // adjust stack
move.l (sp)+,d0 // restore d0
#else
video_copy_data_loop: