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Support HW_PHYSMEM64

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This commit is contained in:
Lasse Collin 2009-06-24 20:14:10 +03:00
parent ae82dde5d9
commit b317b218e2
1 changed files with 19 additions and 11 deletions
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30
src/common/physmem.h
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@ -59,19 +59,27 @@ physmem(void)
ret = (uint64_t)(pagesize) * (uint64_t)(pages);
#elif defined(HAVE_PHYSMEM_SYSCTL)
int name[2] = { CTL_HW, HW_PHYSMEM };
int name[2] = {
CTL_HW,
#ifdef HW_PHYSMEM64
HW_PHYSMEM64
#else
HW_PHYSMEM
#endif
};
union {
unsigned long ul;
unsigned int ui;
uint32_t u32;
uint64_t u64;
} mem;
size_t mem_ptr_size = sizeof(mem.ul);
if (!sysctl(name, 2, &mem.ul, &mem_ptr_size, NULL, NULL)) {
// Some systems use unsigned int as the "return value".
// This makes a difference on 64-bit boxes.
if (mem_ptr_size == sizeof(mem.ul))
ret = mem.ul;
else if (mem_ptr_size == sizeof(mem.ui))
ret = mem.ui;
size_t mem_ptr_size = sizeof(mem.u64);
if (!sysctl(name, 2, &mem.u64, &mem_ptr_size, NULL, NULL)) {
// IIRC, 64-bit "return value" is possible on some 64-bit
// BSD systems even with HW_PHYSMEM (instead of HW_PHYSMEM64),
// so support both.
if (mem_ptr_size == sizeof(mem.u64))
ret = mem.u64;
else if (mem_ptr_size == sizeof(mem.u32))
ret = mem.u32;
}
#elif defined(HAVE_PHYSMEM_SYSINFO)