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syscall_emul: fix bug in aux vector initialization

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Writing 16 bytes from an 8-byte source value is a bad idea.
This doesn't appear to have broken anything, but showed up
as spurious differences when tracediffing runs.
This commit is contained in:
Steve Reinhardt 2016-02-06 17:21:20 -08:00
parent f6b828d068
commit 92b750d5ef
1 changed files with 4 additions and 2 deletions
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6
src/arch/x86/process.cc
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@ -983,8 +983,10 @@ X86LiveProcess::argsInit(int pageSize,
}
//Write out the terminating zeroed auxilliary vector
const uint64_t zero = 0;
initVirtMem.writeBlob(auxv_array_base + 2 * intSize * auxv.size(),
(uint8_t*)&zero, 2 * intSize);
initVirtMem.writeBlob(auxv_array_base + auxv.size() * 2 * intSize,
(uint8_t*)&zero, intSize);
initVirtMem.writeBlob(auxv_array_base + (auxv.size() * 2 + 1) * intSize,
(uint8_t*)&zero, intSize);
initVirtMem.writeString(aux_data_base, platform.c_str());