Add support to the MSP430 linker for the automatic placement of code and data into...

[deliverable/binutils-gdb.git] / ld / emultempl / spu_ovl.S

diff --git a/ld/emultempl/spu_ovl.S b/ld/emultempl/spu_ovl.S
index 92304b219e1675159c709d7d9e86d43dfc4f07d1..6640e1ea61a9a5469d648d66a423f1a063dde8ed 100644 (file)
--- a/ld/emultempl/spu_ovl.S
+++ b/ld/emultempl/spu_ovl.S
@@ -1,6 +1,6 @@
 /* Overlay manager for SPU.
 
-   Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2006-2015 Free Software Foundation, Inc.
 
    This file is part of the GNU Binutils.
 
@@ -67,11 +67,13 @@
 #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
@@ -87,7 +89,7 @@
 #define oldovl         save2
 #define newvma         save2
 
-#define save3          $74
+#define save3          $72
 #define rv1            save3
 #define ea64           save3
 #define buf3           save3
@@ -95,6 +97,8 @@
 #define newmap         save3
 #define oldmask                save3
 
+#define save4          $71
+#define irq_stat       save4
 
        .text
        .align  4
@@ -140,7 +144,12 @@ __ovly_return:
 #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
@@ -168,7 +177,9 @@ ovly_ret9:
  * 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 $lr is already set
+ * to return via __ovly_return, don't change it.  In that case we
+ * have a tail call from one overlay function to another.
  * Updates __ovly_current.
  */
        .align  3
@@ -245,7 +256,11 @@ __ovly_load:
        or      rv7, rv4, rv6                                   # 0,2   16
        lqd     save2, -32($sp)                                 # 1,6   16
        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
@@ -268,9 +283,19 @@ ovly_load9:
        .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, $SPU_RdMachStat                       # 1,6   -4
 #nop
+       bid     irqtmp1                                         # 1,4   -3
+do_load10:
+       nop
+#else
+#nop
+       rotqbyi sz, vma, 8                                      # 1,4   0
+#endif
        rotqbyi osize, vma, 4                                   # 1,4   1
 #nop
        lqa     ea64, _EAR_                                     # 1,6   2
@@ -410,14 +435,30 @@ __ovly_xfer_loop:
 #nop; lnop
        andc    pbit, pbit, zovl                                # 0,2   74
        lqd     save2, -32($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
@@ -425,6 +466,6 @@ _ovly_debug_event:
        nop
 /* Branch to target address. */
 do_load99:
-       bi      target                                          # 1,4   81
+       bi      target                                          # 1,4   81/85
 
        .size   __ovly_load, . - __ovly_load