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cputlb: use uint64_t for interim values for unaligned load

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When running on 32 bit TCG backends a wide unaligned load ends up
truncating data before returning to the guest. We specifically have
the return type as uint64_t to avoid any premature truncation so we
should use the same for the interim types.

Fixes: https://bugs.launchpad.net/qemu/+bug/1830872
Fixes: eed5664238e

Backports commit 8c79b288513587e960b6b7257a9d955d5592f209 from qemu
This commit is contained in:
Alex Bennée 2019-06-13 16:06:11 -04:00 committed by Lioncash
parent d7ea41c3a3
commit 9aef73f5fb
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1 changed files with 1 additions and 1 deletions
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2
qemu/accel/tcg/cputlb.c
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@ -1085,7 +1085,7 @@ load_helper(CPUArchState *env, target_ulong addr, TCGMemOpIdx oi,
&& unlikely((addr & ~TARGET_PAGE_MASK) + size - 1
>= TARGET_PAGE_SIZE)) {
target_ulong addr1, addr2;
tcg_target_ulong r1, r2;
uint64_t r1, r2;
unsigned shift;
do_unaligned_access:
addr1 = addr & ~(size - 1);