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Add cache line size detection on arm

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veejay
2023-09-06 22:03:17 +02:00
parent 4e2035b24e
commit a706023bbf
1 changed files with 15 additions and 0 deletions
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15
veejay-current/veejay-core/libvjmem/vj-x86.c
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@@ -71,6 +71,17 @@ static int has_cpuid(void)
return 0;
}
#ifdef HAVE_ARM
static int get_cache_line_size() {
int cache_line_size;
asm volatile("mrs %0, ctr_el0" : "=r"(cache_line_size));
cache_line_size &= 0xFF;
return cache_line_size;
}
#endif
#if defined(ARCH_X86_64) || defined(ARCH_X86)
// copied from Mplayer (want to have cache line size detection ;) )
static void do_cpuid(unsigned int ax, unsigned int *p)
{
@@ -110,6 +121,7 @@ static int get_cache_line_size()
}
return ret;
}
#endif
int cpu_cache_size()
{
@@ -128,6 +140,9 @@ void vj_mem_init(void)
#endif
#ifdef ARCH_X86_64
CACHE_LINE_SIZE = get_cache_line_size();
#endif
#if defined (HAVE_ARM)
CACHE_LINE_SIZE = get_cache_line_size();
#endif
if(MEM_ALIGNMENT_SIZE == 0)
MEM_ALIGNMENT_SIZE = getpagesize();