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Issue #3049 - Preserve loongarch64 callee-save JIT entry regs

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Basilisk-Dev 2026-04-23 20:53:40 -04:00 • committed by wuggy
commit fe3689392f
1 changed files with 6 additions and 0 deletions
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6
js/src/jit/loongarch64/Trampoline-loongarch64.cpp
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@ -45,6 +45,8 @@ struct EnterJITRegs
// non-volatile registers. // non-volatile registers.
uint64_t ra; uint64_t ra;
uint64_t fp;
uint64_t s8;
uint64_t s7; uint64_t s7;
uint64_t s6; uint64_t s6;
uint64_t s5; uint64_t s5;
@ -71,6 +73,8 @@ GenerateReturn(MacroAssembler& masm, int returnCode)
masm.loadPtr(Address(StackPointer, offsetof(EnterJITRegs, s5)), s5); masm.loadPtr(Address(StackPointer, offsetof(EnterJITRegs, s5)), s5);
masm.loadPtr(Address(StackPointer, offsetof(EnterJITRegs, s6)), s6); masm.loadPtr(Address(StackPointer, offsetof(EnterJITRegs, s6)), s6);
masm.loadPtr(Address(StackPointer, offsetof(EnterJITRegs, s7)), s7); masm.loadPtr(Address(StackPointer, offsetof(EnterJITRegs, s7)), s7);
masm.loadPtr(Address(StackPointer, offsetof(EnterJITRegs, s8)), s8);
masm.loadPtr(Address(StackPointer, offsetof(EnterJITRegs, fp)), fp);
masm.loadPtr(Address(StackPointer, offsetof(EnterJITRegs, ra)), ra); masm.loadPtr(Address(StackPointer, offsetof(EnterJITRegs, ra)), ra);
// Restore non-volatile floating point registers. // Restore non-volatile floating point registers.
@ -101,6 +105,8 @@ GeneratePrologue(MacroAssembler& masm)
masm.storePtr(s5, Address(StackPointer, offsetof(EnterJITRegs, s5))); masm.storePtr(s5, Address(StackPointer, offsetof(EnterJITRegs, s5)));
masm.storePtr(s6, Address(StackPointer, offsetof(EnterJITRegs, s6))); masm.storePtr(s6, Address(StackPointer, offsetof(EnterJITRegs, s6)));
masm.storePtr(s7, Address(StackPointer, offsetof(EnterJITRegs, s7))); masm.storePtr(s7, Address(StackPointer, offsetof(EnterJITRegs, s7)));
masm.storePtr(s8, Address(StackPointer, offsetof(EnterJITRegs, s8)));
masm.storePtr(fp, Address(StackPointer, offsetof(EnterJITRegs, fp)));
masm.storePtr(ra, Address(StackPointer, offsetof(EnterJITRegs, ra))); masm.storePtr(ra, Address(StackPointer, offsetof(EnterJITRegs, ra)));
masm.storePtr(a7, Address(StackPointer, offsetof(EnterJITRegs, a7))); masm.storePtr(a7, Address(StackPointer, offsetof(EnterJITRegs, a7)));