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idle loops adjusted

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@549 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-07-15 17:04:43 +00:00
parent 1413b9a118
commit 5ed2a20eaa
5 changed files with 89 additions and 52 deletions
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45
cpu/Cyclone/tools/idle.s
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@ -22,8 +22,8 @@ patch_desc_table:
.word (0x75f8<<16) | 0x67f8, idle_detector_bcc8, idle_beq, Op6701 @ beq.s
.word (0x75f6<<16) | 0x67f6, idle_detector_bcc8, idle_beq, Op6701 @ beq.s
.word (0x75f2<<16) | 0x67f2, idle_detector_bcc8, idle_beq, Op6701 @ beq.s
.word (0x7dfe<<16) | 0x60fe, idle_detector_dead, idle_bra, Op6001 @ bra.s
.word (0x7dfc<<16) | 0x60fc, idle_detector_dead, idle_bra, Op6001 @ bra.s
.word (0x7dfe<<16) | 0x60fe, idle_detector_bcc8, idle_bra, Op6001 @ bra.s
.word (0x7dfc<<16) | 0x60fc, idle_detector_bcc8, idle_bra, Op6001 @ bra.s
.text
@ -90,10 +90,12 @@ cfi_loop:
.macro inc_counter cond
@ ldr r0, =idle_hit_counter
@ ldr r1, [r0]
@ add r1, r1, #1
@ str\cond r1, [r0]
@ ldr\cond r0, [r7, #0x60]
@ mov r11,lr
@ sub r0, r4, r0
@ sub r0, r0, #2
@ bl\cond SekRegisterIdleHit
@ mov lr, r11
.endm
idle_bra:
@ -139,43 +141,36 @@ idle_detector_bcc8:
and r2, r8, #0x00ff
orr r2, r2, #0x7100
orreq r2, r2, #0x0200
tst r8, #0x0100 @ 67xx (beq)?
orrne r2, r2, #0x0400
mov r0, r8, lsr #8
cmp r0, #0x66
orrgt r2, r2, #0x0400 @ 67xx (beq)
orrlt r2, r2, #0x0c00 @ 60xx (bra)
@ r2 = patch_opcode
sub r0, r4, #2
ldrh r1, [r0]
mov r11,r2
mov r3, r7
bl SekRegisterIdlePatch
cmp r0, #1 @ 0 - ok to patch, 1 - no patch, 2 - remove detector
strlth r11,[r4, #-2]
ble exit_detector
@ remove detector from Cyclone
tst r8, #0x0100 @ 67xx (beq)?
mov r0, r8, lsr #8
cmp r0, #0x66
ldrlt r1, =Op6001
ldreq r1, =Op6601
ldrne r1, =Op6701
ldrgt r1, =Op6701
ldr r3, =CycloneJumpTab
str r1, [r3, r8, lsl #2]
bx r1
exit_detector:
tst r8, #0x0100 @ 67xx (beq)?
mov r0, r8, lsr #8
cmp r0, #0x66
blt Op6001
beq Op6601
b Op6701
idle_detector_dead:
@ patch without further questions
and r2, r8, #0x00ff
orr r2, r2, #0x7d00
sub r0, r4, #2
ldrh r1, [r0]
mov r11,r2
bl SekRegisterIdlePatch
strh r11,[r4, #-2]
b Op6001
.pool