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[ARM64_DYNAREC] Added more aligned optim cases for REP MOVSB (#2326)

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Yang Liu 2025-02-08 16:04:50 +08:00 committed by GitHub
parent 997140f500
commit 592af6db3b
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GPG Key ID: B5690EEEBB952194
5 changed files with 19 additions and 2 deletions
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2
.clang-format
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@ -12,7 +12,7 @@ MaxEmptyLinesToKeep: 2
IndentCaseLabels: true
AlignConsecutiveMacros: true
WhitespaceSensitiveMacros: ['QUOTE']
IfMacros: ['IFX', 'IFXORNAT', 'IFX2', 'IFXA', 'IFX_PENDOR0', 'IFXX', 'IFX2X', 'IFXN', 'UFLAG_IF', 'PASS2IF']
IfMacros: ['IFX', 'IFXORNAT', 'IFX2', 'IFXA', 'IFX_PENDOR0', 'IFXX', 'IFX2X', 'IFXN', 'UFLAG_IF', 'PASS2IF', 'IF_UNALIGNED', 'IF_ALIGNED']
UseTab: Never
IndentPPDirectives: None
---

2
src/dynarec/arm64/dynarec_arm64_00.c
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@ -1675,7 +1675,7 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
INST_NAME("REP MOVSB");
CBZx_NEXT(xRCX);
TBNZ_MARK2(xFlags, F_DF);
IF_UNALIGNED(ip) {} else {
IF_ALIGNED(ip) {
// special optim for large RCX value on forward case only
MARK3;
CMPSx_U12(xRCX, 8);

12
src/dynarec/arm64/dynarec_arm64_66.c
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@ -779,6 +779,17 @@ uintptr_t dynarec64_66(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
INST_NAME("REP MOVSB");
CBZx_NEXT(xRCX);
TBNZ_MARK2(xFlags, F_DF);
IF_ALIGNED (ip) {
// special optim for large RCX value on forward case only
MARK3;
CMPSx_U12(xRCX, 8);
B_MARK(cCC);
LDRx_S9_postindex(x1, xRSI, 8);
STRx_S9_postindex(x1, xRDI, 8);
SUBx_U12(xRCX, xRCX, 8);
CBNZx_MARK3(xRCX);
CBZx_MARKLOCK(xRCX);
}
MARK; // Part with DF==0
LDRB_S9_postindex(x1, xRSI, 1);
STRB_S9_postindex(x1, xRDI, 1);
@ -790,6 +801,7 @@ uintptr_t dynarec64_66(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
STRB_S9_postindex(x1, xRDI, -1);
SUBx_U12(xRCX, xRCX, 1);
CBNZx_MARK2(xRCX);
MARKLOCK;
// done
} else {
INST_NAME("MOVSB");

4
src/dynarec/arm64/dynarec_arm64_helper.h
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@ -973,6 +973,10 @@
#define IF_UNALIGNED(A) if(is_addr_unaligned(A))
#endif
#ifndef IF_ALIGNED
#define IF_ALIGNED(A) if (!is_addr_unaligned(A))
#endif
#define STORE_REG(A) STRx_U12(x##A, xEmu, offsetof(x64emu_t, regs[_##A]))
#define STP_REGS(A, B) STPx_S7_offset(x##A, x##B, xEmu, offsetof(x64emu_t, regs[_##A]))
#define LDP_REGS(A, B) LDPx_S7_offset(x##A, x##B, xEmu, offsetof(x64emu_t, regs[_##A]))

1
src/dynarec/arm64/dynarec_arm64_pass0.h
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@ -69,3 +69,4 @@
#define INVERT_CARRY_BEFORE(A) dyn->insts[ninst].invert_carry_before = 1
// mark opcode as "unaligned" possible only if the current address is not marked as already unaligned
#define IF_UNALIGNED(A) if((dyn->insts[ninst].unaligned=(is_addr_unaligned(A)?0:1)))
#define IF_ALIGNED(A) if((dyn->insts[ninst].unaligned=(is_addr_unaligned(A)?1:0)))