/* Overlay manager for SPU.
- Copyright 2006, 2007 Free Software Foundation, Inc.
+ Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
This file is part of the GNU Binutils.
#define cgbits reserved2
#define off3 reserved2
#define off4 reserved2
+#define addr4 reserved2
#define off5 reserved2
#define tagstat reserved2
#define reserved3 $77
-#define buf1 reserved3
-#define buf2 reserved3
+#define size1 reserved3
+#define size2 reserved3
#define rv3 reserved3
#define ealo reserved3
#define cmd reserved3
#define rv5 reserved4
#define cgshuf reserved4
#define newovl reserved4
+#define irqtmp1 reserved4
+#define irqtmp2 reserved4
#define reserved5 $79
#define target reserved5
-#define save1 $72
+#define save1 $74
#define rv4 save1
#define rv7 save1
#define tagid save1
#define oldovl save2
#define newvma save2
-#define save3 $74
+#define save3 $72
#define rv1 save3
#define ea64 save3
#define buf3 save3
#define newmap save3
#define oldmask save3
+#define save4 $71
+#define irq_stat save4
.text
.align 4
#nop; lnop
#nop
lqx vma, tab1, off1 # 1,6 8
+#ifdef OVLY_IRQ_SAVE
+ nop
+ stqd save4, -64($sp) # 1,6 9
+#else
#nop; lnop
+#endif
#nop; lnop
#nop; lnop
#nop; lnop
#nop; lnop
#nop
- rotqbyi buf1, vma, 12 # 1,4 14
+ rotqbyi size1, vma, 4 # 1,4 14
#nop
stqd save3, -48($sp) # 1,6 15
#nop
stqd save2, -32($sp) # 1,6 16
#nop
stqd save1, -16($sp) # 1,6 17
- andi present1, buf1, 1 # 0,2 18
- stqd ovl, (__ovly_current - __ovly_return)($lr) # 1,6 18
+ andi present1, size1, 1 # 0,2 18
+ stqr ovl, __ovly_current # 1,6 18
#nop; lnop
#nop
- brz present1, __ovly_load_event # 1,4 20
+ brz present1, do_load # 1,4 20
ovly_ret9:
#nop
bi target # 1,4 21
* On entry $75 points to a word consisting of the overlay index in
* the top 14 bits, and the target address in the bottom 18 bits.
*
- * Sets up $lr to return via __ovly_return.
+ * Sets up $lr to return via __ovly_return. If $lr is already set
+ * to return via __ovly_return, don't change it. In that case we
+ * have a tail call from one overlay function to another.
* Updates __ovly_current.
*/
.align 3
#lnop
#nop; lnop
#nop
- lqd cur, (__ovly_current - __ovly_return)(rv1) # 1,6 2
+ lqr cur, __ovly_current # 1,6 2
shli off2, ovl, 4 # 0,4 3
- stqd ovl, (__ovly_current - __ovly_return)(rv1) # 1,6 3
+ stqr ovl, __ovly_current # 1,6 3
ceq rv2, $lr, rv1 # 0,2 4
- lqd rv3, (__rv_pattern - __ovly_return)(rv1) # 1,6 4
+ lqr rv3, __rv_pattern # 1,6 4
#nop; lnop
#nop; lnop
#nop
ila rv1, __ovly_return # 0,2 1
stqd save2, -32($sp) # 1,6 1
shli off2, ovl, 4 # 0,4 2
- lqa cur, __ovly_current # 1,6 2
+ lqr cur, __ovly_current # 1,6 2
nop
- stqa ovl, __ovly_current # 1,6 3
+ stqr ovl, __ovly_current # 1,6 3
ceq rv2, $lr, rv1 # 0,2 4
- lqd rv3, (__rv_pattern - __ovly_return)(rv1) # 1,6 4
+ lqr rv3, __rv_pattern # 1,6 4
#nop
hbr ovly_load9, target # 1,15 5
#nop
#nop
rotqmbyi rv6, $lr, -8 # 1,4 12
#nop
- rotqbyi buf2, vma, 12 # 1,4 13
+ rotqbyi size2, vma, 4 # 1,4 13
#nop
lqd save3, -48($sp) # 1,6 14
#nop; lnop
or rv7, rv4, rv6 # 0,2 16
lqd save2, -32($sp) # 1,6 16
- andi present2, buf2, 1 # 0,2 17
+ andi present2, size2, 1 # 0,2 17
+#ifdef OVLY_IRQ_SAVE
+ stqd save4, -64($sp) # 1,6 17
+#else
lnop # 1,0 17
+#endif
selb $lr, rv7, $lr, rv5 # 0,2 18
lqd save1, -16($sp) # 1,6 18
#nop
- brz present2, __ovly_load_event # 1,4 19
+ brz present2, do_load # 1,4 19
ovly_load9:
#nop
bi target # 1,4 20
.global __ovly_load_event
.type __ovly_load_event, @function
__ovly_load_event:
+do_load:
+#ifdef OVLY_IRQ_SAVE
+ ila irqtmp1, do_load10 # 0,2 -5
+ rotqbyi sz, vma, 8 # 1,4 -5
#nop
- rotqbyi sz, vma, 8 # 1,4 0
+ rdch irq_stat, $SPU_RdMachStat # 1,6 -4
+#nop
+ bid irqtmp1 # 1,4 -3
+do_load10:
+ nop
+#else
#nop
+ rotqbyi sz, vma, 8 # 1,4 0
+#endif
rotqbyi osize, vma, 4 # 1,4 1
#nop
lqa ea64, _EAR_ # 1,6 2
#nop
- lqd cgshuf, (__cg_pattern - __ovly_return)($lr) # 1,6 3
+ lqr cgshuf, __cg_pattern # 1,6 3
/* We could predict the branch at the end of this loop by adding a few
instructions, and there are plenty of free cycles to do so without
brnz osize, __ovly_xfer_loop # 1,4 24
/* Now update our data structions while waiting for DMA to complete.
- Low bit of .buf needs to be cleared on the _ovly_table entry
+ Low bit of .size needs to be cleared on the _ovly_table entry
corresponding to the evicted overlay, and set on the entry for the
newly loaded overlay. Note that no overlay may in fact be evicted
- as _ovly_buf_table[] starts with all zeros. Don't zap .buf entry
+ as _ovly_buf_table[] starts with all zeros. Don't zap .size entry
for zero index! Also of course update the _ovly_buf_table entry. */
#nop
- lqd newovl, (__ovly_current - __ovly_return)($lr) # 1,6 25
+ lqr newovl, __ovly_current # 1,6 25
#nop; lnop
#nop; lnop
#nop; lnop
ila tab3, _ovly_table - 16 # 0,2 32
#lnop
#nop
- fsmbi pbyte, 1 # 1,4 33
+ fsmbi pbyte, 0x100 # 1,4 33
#nop; lnop
#nop
lqx vma, tab3, off3 # 1,6 35
#nop; lnop
shli off4, buf3, 2 # 1,4 45
#lnop
- ila tab4, _ovly_buf_table # 0,2 46
+ ila tab4, _ovly_buf_table - 4 # 0,2 46
#lnop
#nop; lnop
#nop; lnop
lqx map, tab4, off4 # 1,6 49
#nop
cwx genwi, tab4, off4 # 1,4 50
-#nop; lnop
+ a addr4, tab4, off4 # 0,2 51
+#lnop
#nop; lnop
#nop; lnop
#nop; lnop
#nop
- rotqby oldovl, map, off4 # 1,4 55
- nop
+ rotqby oldovl, map, addr4 # 1,4 55
+#nop
shufb newmap, newovl, map, genwi # 0,4 56
#if MFC_TAG_ID < 16
ila newmask, 1 << MFC_TAG_ID # 0,2 57
#lnop
#nop; lnop
#nop; lnop
- stqx newmap, tab4, off4 # 1,6 60
+ stqd newmap, 0(addr4) # 1,6 60
/* Save app's tagmask, wait for DMA complete, restore mask. */
ila tagstat, MFC_TAG_UPDATE_ALL # 0,2 61
#nop; lnop
andc pbit, pbit, zovl # 0,2 74
lqd save2, -32($sp) # 1,6 74
+#ifdef OVLY_IRQ_SAVE
+ ila irqtmp2, do_load90 # 0,2 75
+#lnop
+ andi irq_stat, irq_stat, 1 # 0,2 76
+#lnop
+#else
#nop; lnop
#nop; lnop
+#endif
andc oldvma, oldvma, pbit # 0,2 77
lqd save1, -16($sp) # 1,6 77
-#nop; lnop
- nop
+ nop # 0,0 78
+#lnop
+#nop
stqx oldvma, tab5, off5 # 1,6 79
+#nop
+#ifdef OVLY_IRQ_SAVE
+ binze irq_stat, irqtmp2 # 1,4 80
+do_load90:
+#nop
+ lqd save4, -64($sp) # 1,6 84
+#else
#nop; lnop
+#endif
.global _ovly_debug_event
.type _ovly_debug_event, @function
nop
/* Branch to target address. */
do_load99:
- bi target # 1,4 81
+ bi target # 1,4 81/85
.size __ovly_load, . - __ovly_load
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