backend/x64: Move check_bit from JitState to stack
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a1950d1d2f
commit
030ff82ba8
5 changed files with 8 additions and 6 deletions
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@ -22,6 +22,7 @@
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#include "backend/x64/emit_x64.h"
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#include "backend/x64/nzcv_util.h"
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#include "backend/x64/perf_map.h"
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#include "backend/x64/stack_layout.h"
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#include "common/assert.h"
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#include "common/bit_util.h"
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#include "common/common_types.h"
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@ -324,7 +325,7 @@ void A32EmitX64::GenTerminalHandlers() {
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void A32EmitX64::EmitA32SetCheckBit(A32EmitContext& ctx, IR::Inst* inst) {
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auto args = ctx.reg_alloc.GetArgumentInfo(inst);
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const Xbyak::Reg8 to_store = ctx.reg_alloc.UseGpr(args[0]).cvt8();
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code.mov(code.byte[r15 + offsetof(A32JitState, check_bit)], to_store);
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code.mov(code.byte[rsp + ABI_SHADOW_SPACE + offsetof(StackLayout, check_bit)], to_store);
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}
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void A32EmitX64::EmitA32GetRegister(A32EmitContext& ctx, IR::Inst* inst) {
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@ -1601,7 +1602,7 @@ void A32EmitX64::EmitTerminalImpl(IR::Term::If terminal, IR::LocationDescriptor
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void A32EmitX64::EmitTerminalImpl(IR::Term::CheckBit terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
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Xbyak::Label fail;
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code.cmp(code.byte[r15 + offsetof(A32JitState, check_bit)], u8(0));
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code.cmp(code.byte[rsp + ABI_SHADOW_SPACE + offsetof(StackLayout, check_bit)], u8(0));
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code.jz(fail);
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EmitTerminal(terminal.then_, initial_location, is_single_step);
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code.L(fail);
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@ -45,7 +45,6 @@ struct A32JitState {
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s64 cycles_to_run = 0;
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s64 cycles_remaining = 0;
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bool halt_requested = false;
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bool check_bit = false;
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// Exclusive state
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u32 exclusive_state = 0;
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@ -19,6 +19,7 @@
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#include "backend/x64/emit_x64.h"
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#include "backend/x64/nzcv_util.h"
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#include "backend/x64/perf_map.h"
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#include "backend/x64/stack_layout.h"
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#include "common/assert.h"
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#include "common/bit_util.h"
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#include "common/common_types.h"
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@ -376,7 +377,7 @@ void A64EmitX64::EmitPushRSB(EmitContext& ctx, IR::Inst* inst) {
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void A64EmitX64::EmitA64SetCheckBit(A64EmitContext& ctx, IR::Inst* inst) {
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auto args = ctx.reg_alloc.GetArgumentInfo(inst);
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const Xbyak::Reg8 to_store = ctx.reg_alloc.UseGpr(args[0]).cvt8();
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code.mov(code.byte[r15 + offsetof(A64JitState, check_bit)], to_store);
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code.mov(code.byte[rsp + ABI_SHADOW_SPACE + offsetof(StackLayout, check_bit)], to_store);
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}
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void A64EmitX64::EmitA64GetCFlag(A64EmitContext& ctx, IR::Inst* inst) {
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@ -1299,7 +1300,7 @@ void A64EmitX64::EmitTerminalImpl(IR::Term::If terminal, IR::LocationDescriptor
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void A64EmitX64::EmitTerminalImpl(IR::Term::CheckBit terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
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Xbyak::Label fail;
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code.cmp(code.byte[r15 + offsetof(A64JitState, check_bit)], u8(0));
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code.cmp(code.byte[rsp + ABI_SHADOW_SPACE + offsetof(StackLayout, check_bit)], u8(0));
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code.jz(fail);
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EmitTerminal(terminal.then_, initial_location, is_single_step);
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code.L(fail);
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@ -48,7 +48,6 @@ struct A64JitState {
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s64 cycles_to_run = 0;
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s64 cycles_remaining = 0;
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bool halt_requested = false;
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bool check_bit = false;
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// Exclusive state
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static constexpr u64 RESERVATION_GRANULE_MASK = 0xFFFF'FFFF'FFFF'FFF0ull;
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@ -17,6 +17,8 @@ struct alignas(16) StackLayout {
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std::array<std::array<u64, 2>, SpillCount> spill;
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u32 save_host_MXCSR;
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bool check_bit;
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};
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static_assert(sizeof(StackLayout) % 16 == 0);
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