mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-11-25 08:37:38 +01:00
aed6c8b994
Fixup commit 39b83981 ("Flush icache with __builtin___clear_cache() in
tests when compiling with GCC") to fix compilation with older GCC
versions that do not provide __builtin___clear_cache().
90 lines
1.7 KiB
ArmAsm
90 lines
1.7 KiB
ArmAsm
#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifndef HAVE__BUILTIN___CLEAR_CACHE
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#if defined(__ia64__)
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.global flush_cache
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.proc flush_cache
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flush_cache:
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.prologue
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alloc r2=ar.pfs,2,0,0,0
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add r8=31,in1 // round up to 32 byte-boundary
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;;
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shr.u r8=r8,5 // we flush 32 bytes per iteration
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;;
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add r8=-1,r8
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.save ar.lc, r3
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mov r3=ar.lc // save ar.lc
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;;
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.body
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mov ar.lc=r8
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;;
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.loop: fc in0 // issuable on M0 only
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add in0=32,in0
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br.cloop.sptk.few .loop
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;;
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sync.i
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;;
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srlz.i
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;;
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mov ar.lc=r3 // restore ar.lc
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br.ret.sptk.many rp
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.endp flush_cache
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#elif defined(__i386__) || defined (__x86_64__)
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.globl flush_cache
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flush_cache:
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ret
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#elif defined(__hppa__)
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# warning FIX ME!!
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.globl flush_cache
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flush_cache:
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.proc
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.callinfo
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bv %r0(%rp)
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.procend
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#elif defined(__powerpc64__)
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# warning IMPLEMENT ME FOR PPC64!!
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.globl flush_cache
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flush_cache:
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lwz 11, 0(1) ;
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lwz 0, 4(11) ;
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mtlr 0 ;
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lwz 31, -4(11) ;
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mr 1, 11 ;
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blr
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#elif defined(__powerpc__)
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# warning IMPLEMENT ME FOR PPC32!!
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.globl flush_cache
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flush_cache:
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lwz 11, 0(1) ;
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lwz 0, 4(11) ;
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mtlr 0 ;
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lwz 31, -4(11) ;
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mr 1, 11 ;
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blr
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#elif defined(__arm__)
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.text
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.globl flush_cache
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flush_cache:
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bx lr
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#else
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# error Need flush_cache code for this architecture.
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#endif
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#if defined ( __linux__) && !defined (__arm__)
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/* We do not need executable stack. */
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.section .note.GNU-stack,"",@progbits
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#endif
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#endif
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