8000 [RV64_DYNAREC] Clear high 32bits when write back as single by ksco · Pull Request #1684 · ptitSeb/box64 · GitHub
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[RV64_DYNAREC] Clear high 32bits when write back as single #1684

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Merged
merged 1 commit into from
Jul 16, 2024
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[RV64_DYNAREC] Clear high 32bits when write back as single #1684

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7 changes: 5 additions & 2 deletions src/dynarec/rv64/dynarec_rv64_helper.c
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@
#include "dynarec.h"
#include "emu/x64emu_private.h"
#include "emu/x64run_private.h"
#include "rv64_emitter.h"
#include "x64run.h"
#include "x64emu.h"
#include "box64stack.h"
Expand Down Expand Up @@ -1611,8 +1612,10 @@ int sse_get_reg_empty(dynarec_rv64_t* dyn, int ninst, int s1, int a, int single)

if (dyn->e.ssecache[a].single != single) {
if (single) {
// writing back the double, to clear upper 32 bit.
FSD(dyn->e.ssecache[a].reg, xEmu, offsetof(x64emu_t, xmm[a]));
// writing back the float
FSW(dyn->e.ssecache[a].reg, xEmu, offsetof(x64emu_t, xmm[a]));
// clear upper 32 bit
SW(xZR, xEmu, offsetof(x64emu_t, xmm[a]) + 4);
}
dyn->e.olds[a].changed = 1;
dyn->e.olds[a].purged = 0;
Expand Down
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