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Viewing changes to src/threads/ATL_DecAtomicCount_ppc.S

  • Committer: Package Import Robot
  • Author(s): Sébastien Villemot
  • Date: 2013-06-11 15:58:16 UTC
  • mfrom: (1.1.3 upstream)
  • mto: (2.2.21 experimental)
  • mto: This revision was merged to the branch mainline in revision 26.
  • Revision ID: package-import@ubuntu.com-20130611155816-b72z8f621tuhbzn0
Tags: upstream-3.10.1
Import upstream version 3.10.1

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src/threads/ATL_DecAtomicCount_ppc.S
 
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#include "atlas_asm.h"
 
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.text
 
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#ifdef ATL_AS_OSX_PPC
 
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   .globl _ATL_DecAtomicCount
 
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   _ATL_DecAtomicCount:
 
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#else
 
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   #if defined(ATL_USE64BITS)
 
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/*
 
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 *      Official Program Descripter section, seg fault w/o it on Linux/PPC64
 
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 */
 
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        .section        ".opd","aw"
 
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        .align 2
 
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        .globl  ATL_USERMM
 
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        .align  3
 
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ATL_DecAtomicCount:
 
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        .quad   Mjoin(.,ATL_DecAtomicCount),.TOC.@tocbase,0
 
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        .previous
 
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        .type   Mjoin(.,ATL_DecAtomicCount),@function
 
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        .text
 
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        .globl  Mjoin(.,ATL_DecAtomicCount)
 
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.ATL_DecAtomicCount:
 
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   #else
 
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        .globl  ATL_DecAtomicCount
 
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ATL_DecAtomicCount:
 
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   #endif
 
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#endif
 
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#error "Code is not reliable on PPC, don't know why"
 
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/* r3                           r3  */
 
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/* int ATL_DecAtomicCount(void *vp) */
 
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RETRY:
 
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   lwarx r5, 0, r3    /* Read int from mem, place reservation */
 
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   addi  r5, r5, -1   /* decrement value */
 
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   stwcx. r5, 0, r3   /* attempt to store decremented value back to mem */
 
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   bne-  RETRY        /* If store failed, retry */
 
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   mr r3, r5
 
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   blr