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8351158: Incorrect APX EGPR register save ordering

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Reviewed-by: kvn, sviswanathan
This commit is contained in:
Jatin Bhateja 2025-03-05 01:34:15 +00:00
parent 20ea218ce5
commit 62fa33a870
1 changed files with 17 additions and 18 deletions
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35
src/hotspot/cpu/x86/sharedRuntime_x86_64.cpp
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@ -101,24 +101,23 @@ class RegisterSaver {
ymm_off = xmm_off + (XSAVE_AREA_YMM_BEGIN - XSAVE_AREA_BEGIN)/BytesPerInt,
DEF_YMM_OFFS(0),
DEF_YMM_OFFS(1),
// 2..15 are implied in range usage
r31_off = xmm_off + (XSAVE_AREA_EGPRS - XSAVE_AREA_BEGIN)/BytesPerInt,
r31H_off,
r30_off, r30H_off,
r29_off, r29H_off,
r28_off, r28H_off,
r27_off, r27H_off,
r26_off, r26H_off,
r25_off, r25H_off,
r24_off, r24H_off,
r23_off, r23H_off,
r22_off, r22H_off,
r21_off, r21H_off,
r20_off, r20H_off,
r19_off, r19H_off,
r18_off, r18H_off,
r16_off = xmm_off + (XSAVE_AREA_EGPRS - XSAVE_AREA_BEGIN)/BytesPerInt,
r16H_off,
r17_off, r17H_off,
r16_off, r16H_off,
r18_off, r18H_off,
r19_off, r19H_off,
r20_off, r20H_off,
r21_off, r21H_off,
r22_off, r22H_off,
r23_off, r23H_off,
r24_off, r24H_off,
r25_off, r25H_off,
r26_off, r26H_off,
r27_off, r27H_off,
r28_off, r28H_off,
r29_off, r29H_off,
r30_off, r30H_off,
r31_off, r31H_off,
opmask_off = xmm_off + (XSAVE_AREA_OPMASK_BEGIN - XSAVE_AREA_BEGIN)/BytesPerInt,
DEF_OPMASK_OFFS(0),
DEF_OPMASK_OFFS(1),
@ -265,7 +264,7 @@ OopMap* RegisterSaver::save_live_registers(MacroAssembler* masm, int additional_
if (UseAPX) {
int base_addr = XSAVE_AREA_EGPRS;
off = 0;
for(int n = 16; n < Register::number_of_registers; n++) {
for (int n = 16; n < Register::number_of_registers; n++) {
__ movq(Address(rsp, base_addr+(off++*8)), as_Register(n));
}
}