boehm-gc/powerpc_darwin_mach_dep.s

   1 #if defined(__ppc64__)
   2 #define MODE_CHOICE(x, y) y
   3 #else
   4 #define MODE_CHOICE(x, y) x
   5 #endif
   6
   7 #define lgu     MODE_CHOICE(lwzu, ldu)
   8
   9 #define g_long  MODE_CHOICE(long, quad)         /* usage is ".g_long" */
  10
  11 #define LOG2_GPR_BYTES  MODE_CHOICE(2,3)        /* log2(GPR_BYTES) */
  12
  13 ; GC_push_regs function. Under some optimization levels GCC will clobber
  14 ; some of the non-volatile registers before we get a chance to save them
  15 ; therefore, this can't be inline asm.
  16
  17 .text
  18         .align LOG2_GPR_BYTES
  19         .globl _GC_push_regs
  20 _GC_push_regs:
  21
  22     ; Prolog
  23         mflr r0
  24         stw r0,8(r1)
  25         stwu r1,-80(r1)
  26
  27         ; Push r13-r31
  28         mr r3,r13
  29         bl L_GC_push_one$stub
  30         mr r3,r14
  31         bl L_GC_push_one$stub
  32         mr r3,r15
  33         bl L_GC_push_one$stub
  34         mr r3,r16
  35         bl L_GC_push_one$stub
  36         mr r3,r17
  37         bl L_GC_push_one$stub
  38         mr r3,r18
  39         bl L_GC_push_one$stub
  40         mr r3,r19
  41         bl L_GC_push_one$stub
  42         mr r3,r20
  43         bl L_GC_push_one$stub
  44         mr r3,r21
  45         bl L_GC_push_one$stub
  46         mr r3,r22
  47         bl L_GC_push_one$stub
  48         mr r3,r23
  49         bl L_GC_push_one$stub
  50         mr r3,r24
  51         bl L_GC_push_one$stub
  52         mr r3,r25
  53         bl L_GC_push_one$stub
  54         mr r3,r26
  55         bl L_GC_push_one$stub
  56         mr r3,r27
  57         bl L_GC_push_one$stub
  58         mr r3,r28
  59         bl L_GC_push_one$stub
  60         mr r3,r29
  61         bl L_GC_push_one$stub
  62         mr r3,r30
  63         bl L_GC_push_one$stub
  64         mr r3,r31
  65         bl L_GC_push_one$stub
  66
  67     ;
  68     lwz r0,88(r1)
  69     addi r1,r1,80
  70         mtlr r0
  71
  72         ; Return
  73         blr
  74
  75 ; PIC stuff, generated by GCC
  76
  77 .data
  78 .section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
  79         .align LOG2_GPR_BYTES
  80 L_GC_push_one$stub:
  81         .indirect_symbol _GC_push_one
  82         mflr r0
  83         bcl 20,31,L0$_GC_push_one
  84 L0$_GC_push_one:
  85         mflr r11
  86         addis r11,r11,ha16(L_GC_push_one$lazy_ptr-L0$_GC_push_one)
  87         mtlr r0
  88         lgu r12,lo16(L_GC_push_one$lazy_ptr-L0$_GC_push_one)(r11)
  89         mtctr r12
  90         bctr
  91 .data
  92 .lazy_symbol_pointer
  93 L_GC_push_one$lazy_ptr:
  94         .indirect_symbol _GC_push_one
  95         .g_long dyld_stub_binding_helper