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Viewing changes to linux-user/mmap.c

  • Committer: Steve Langasek
  • Date: 2012-03-15 21:13:19 UTC
  • mfrom: (0.1.15)
  • Revision ID: steve.langasek@canonical.com-20120315211319-f1j3ot1ihx30b2s9
New upstream release

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Lines of Context:
linux-user/mmap.c
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#else
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# define TASK_UNMAPPED_BASE  0x40000000
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#endif
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static abi_ulong mmap_next_start = TASK_UNMAPPED_BASE;
 
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abi_ulong mmap_next_start = TASK_UNMAPPED_BASE;
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unsigned long last_brk;
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static abi_ulong mmap_find_vma_reserved(abi_ulong start, abi_ulong size)
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{
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    abi_ulong addr;
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    abi_ulong last_addr;
 
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    abi_ulong end_addr;
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    int prot;
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    int looped = 0;
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        return (abi_ulong)-1;
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    }
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    last_addr = start;
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    for (addr = start; last_addr + size != addr; addr += qemu_host_page_size) {
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        if (last_addr + size >= RESERVED_VA
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            || (abi_ulong)(last_addr + size) < last_addr) {
 
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    size = HOST_PAGE_ALIGN(size);
 
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    end_addr = start + size;
 
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    if (end_addr > RESERVED_VA) {
 
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        end_addr = RESERVED_VA;
 
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    }
 
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    addr = end_addr - qemu_host_page_size;
 
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    while (1) {
 
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        if (addr > end_addr) {
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            if (looped) {
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                return (abi_ulong)-1;
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            }
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            last_addr = qemu_host_page_size;
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            addr = 0;
 
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            end_addr = RESERVED_VA;
 
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            addr = end_addr - qemu_host_page_size;
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            looped = 1;
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            continue;
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        }
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        prot = page_get_flags(addr);
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        if (prot) {
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            last_addr = addr + qemu_host_page_size;
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        }
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    }
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    mmap_next_start = addr;
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    return last_addr;
 
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            end_addr = addr;
 
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        }
 
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        if (addr + size == end_addr) {
 
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            break;
 
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        }
 
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        addr -= qemu_host_page_size;
 
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    }
 
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    if (start == mmap_next_start) {
 
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        mmap_next_start = addr;
 
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    }
 
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    return addr;
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}
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#endif
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