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Bug 824715 - Correctly calculate next page offset in custom linker; r=glandium

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This commit is contained in:
Jim Chen 2013-01-01 21:44:04 -05:00
parent 63fcf6e2e8
commit 1011f7060d
1 changed files with 1 additions and 1 deletions
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2
mozglue/linker/CustomElf.cpp
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@ -439,7 +439,7 @@ CustomElf::LoadSegment(const Phdr *pt_load) const
if (pt_load->p_memsz > pt_load->p_filesz) {
Addr file_end = pt_load->p_vaddr + pt_load->p_filesz;
Addr mem_end = pt_load->p_vaddr + pt_load->p_memsz;
Addr next_page = (file_end & ~(PAGE_SIZE - 1)) + PAGE_SIZE;
Addr next_page = (file_end + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);
if (mem_end > next_page) {
if (mprotect(GetPtr(next_page), mem_end - next_page, prot) < 0) {
log("%s: Failed to mprotect", GetPath());