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[dynarmic] flatten terminal variants to not use recursive pointers 

Signed-off-by: lizzie <lizzie@eden-emu.dev>
lizzie/dynarmic-terminal-leafs
lizzie 3 weeks ago
parent
89004124a5
commit
2121f8e3d5
13 changed files with 287 additions and 196 deletions
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  1. 27
      src/dynarmic/src/dynarmic/backend/arm64/emit_arm64_a32.cpp
  2. 37
      src/dynarmic/src/dynarmic/backend/arm64/emit_arm64_a64.cpp
  3. 35
      src/dynarmic/src/dynarmic/backend/riscv64/emit_riscv64_a32.cpp
  4. 67
      src/dynarmic/src/dynarmic/backend/x64/a32_emit_x64.cpp
  5. 3
      src/dynarmic/src/dynarmic/backend/x64/a32_emit_x64.h
  6. 68
      src/dynarmic/src/dynarmic/backend/x64/a64_emit_x64.cpp
  7. 3
      src/dynarmic/src/dynarmic/backend/x64/a64_emit_x64.h
  8. 3
      src/dynarmic/src/dynarmic/backend/x64/emit_x64.h
  9. 65
      src/dynarmic/src/dynarmic/ir/basic_block.cpp
  10. 10
      src/dynarmic/src/dynarmic/ir/basic_block.h
  11. 2
      src/dynarmic/src/dynarmic/ir/ir_emitter.h
  12. 123
      src/dynarmic/src/dynarmic/ir/terminal.h
  13. 40
      src/dynarmic/tests/A32/fuzz_arm.cpp

27
src/dynarmic/src/dynarmic/backend/arm64/emit_arm64_a32.cpp
View File

@ -34,7 +34,8 @@ oaknut::Label EmitA32Cond(oaknut::CodeGenerator& code, EmitContext&, IR::Cond co
return pass;
}
void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Terminal terminal, IR::LocationDescriptor initial_location, bool is_single_step);
void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::LeafTerminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step);
void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Terminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step);
void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::ReturnToDispatch, IR::LocationDescriptor, bool) {
EmitRelocation(code, ctx, LinkTarget::ReturnToDispatcher);
@ -148,8 +149,28 @@ void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Ch
EmitRelocation(code, ctx, LinkTarget::ReturnToDispatcher);
}
void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Terminal terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
boost::apply_visitor([&](const auto& t) { EmitA32Terminal(code, ctx, t, initial_location, is_single_step); }, terminal);
void EmitA32LeafTerminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::LeafTerminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
if (auto const x = std::get_if<IR::Term::LeafTerminal>(&terminal))
return EmitA32Terminal(code, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::If>(&terminal))
return EmitA32Terminal(code, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::CheckBit>(&terminal))
return EmitA32Terminal(code, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::CheckHalt>(&terminal))
return EmitA32Terminal(code, ctx, *x, initial_location, is_single_step);
UNREACHABLE();
}
void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Terminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
if (auto const x = std::get_if<IR::Term::LeafTerminal>(&terminal))
return EmitA32LeafTerminal(code, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::If>(&terminal))
return EmitA32Terminal(code, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::CheckBit>(&terminal))
return EmitA32Terminal(code, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::CheckHalt>(&terminal))
return EmitA32Terminal(code, ctx, *x, initial_location, is_single_step);
UNREACHABLE();
}
void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx) {

37
src/dynarmic/src/dynarmic/backend/arm64/emit_arm64_a64.cpp
View File

@ -33,7 +33,8 @@ oaknut::Label EmitA64Cond(oaknut::CodeGenerator& code, EmitContext&, IR::Cond co
return pass;
}
void EmitA64Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Terminal terminal, IR::LocationDescriptor initial_location, bool is_single_step);
void EmitA64LeafTerminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::LeafTerminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step);
void EmitA64Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Terminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step);
void EmitA64Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::ReturnToDispatch, IR::LocationDescriptor, bool) {
EmitRelocation(code, ctx, LinkTarget::ReturnToDispatcher);
@ -108,31 +109,51 @@ void EmitA64Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Fa
void EmitA64Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::If terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
oaknut::Label pass = EmitA64Cond(code, ctx, terminal.if_);
EmitA64Terminal(code, ctx, terminal.else_, initial_location, is_single_step);
EmitA64LeafTerminal(code, ctx, terminal.else_, initial_location, is_single_step);
code.l(pass);
EmitA64Terminal(code, ctx, terminal.then_, initial_location, is_single_step);
EmitA64LeafTerminal(code, ctx, terminal.then_, initial_location, is_single_step);
}
void EmitA64Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::CheckBit terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
oaknut::Label fail;
code.LDRB(Wscratch0, SP, offsetof(StackLayout, check_bit));
code.CBZ(Wscratch0, fail);
EmitA64Terminal(code, ctx, terminal.then_, initial_location, is_single_step);
EmitA64LeafTerminal(code, ctx, terminal.then_, initial_location, is_single_step);
code.l(fail);
EmitA64Terminal(code, ctx, terminal.else_, initial_location, is_single_step);
EmitA64LeafTerminal(code, ctx, terminal.else_, initial_location, is_single_step);
}
void EmitA64Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::CheckHalt terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
oaknut::Label fail;
code.LDAR(Wscratch0, Xhalt);
code.CBNZ(Wscratch0, fail);
EmitA64Terminal(code, ctx, terminal.else_, initial_location, is_single_step);
EmitA64LeafTerminal(code, ctx, terminal.else_, initial_location, is_single_step);
code.l(fail);
EmitRelocation(code, ctx, LinkTarget::ReturnToDispatcher);
}
void EmitA64Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Terminal terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
boost::apply_visitor([&](const auto& t) { EmitA64Terminal(code, ctx, t, initial_location, is_single_step); }, terminal);
void EmitA64LeafTerminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::LeafTerminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
if (auto const x = std::get_if<IR::Term::LeafTerminal>(&terminal))
return EmitA64Terminal(code, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::If>(&terminal))
return EmitA64Terminal(code, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::CheckBit>(&terminal))
return EmitA64Terminal(code, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::CheckHalt>(&terminal))
return EmitA64Terminal(code, ctx, *x, initial_location, is_single_step);
UNREACHABLE();
}
void EmitA64Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Terminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
if (auto const x = std::get_if<IR::Term::LeafTerminal>(&terminal))
return EmitA64LeafTerminal(code, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::If>(&terminal))
return EmitA64Terminal(code, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::CheckBit>(&terminal))
return EmitA64Terminal(code, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::CheckHalt>(&terminal))
return EmitA64Terminal(code, ctx, *x, initial_location, is_single_step);
UNREACHABLE();
}
void EmitA64Terminal(oaknut::CodeGenerator& code, EmitContext& ctx) {

35
src/dynarmic/src/dynarmic/backend/riscv64/emit_riscv64_a32.cpp
View File

@ -112,6 +112,7 @@ void EmitA32Cond(biscuit::Assembler& as, EmitContext&, IR::Cond cond, biscuit::L
}
}
void EmitA32LeafTerminal(biscuit::Assembler& as, EmitContext& ctx, IR::Term::LeafTerminal terminal, IR::LocationDescriptor initial_location, bool is_single_step);
void EmitA32Terminal(biscuit::Assembler& as, EmitContext& ctx, IR::Term::Terminal terminal, IR::LocationDescriptor initial_location, bool is_single_step);
void EmitA32Terminal(biscuit::Assembler& as, EmitContext& ctx, IR::Term::ReturnToDispatch, IR::LocationDescriptor, bool) {
@ -170,18 +171,18 @@ void EmitA32Terminal(biscuit::Assembler& as, EmitContext& ctx, IR::Term::FastDis
void EmitA32Terminal(biscuit::Assembler& as, EmitContext& ctx, IR::Term::If terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
biscuit::Label pass;
EmitA32Cond(as, ctx, terminal.if_, &pass);
EmitA32Terminal(as, ctx, terminal.else_, initial_location, is_single_step);
EmitA32LeafTerminal(as, ctx, terminal.else_, initial_location, is_single_step);
as.Bind(&pass);
EmitA32Terminal(as, ctx, terminal.then_, initial_location, is_single_step);
EmitA32LeafTerminal(as, ctx, terminal.then_, initial_location, is_single_step);
}
void EmitA32Terminal(biscuit::Assembler& as, EmitContext& ctx, IR::Term::CheckBit terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
biscuit::Label fail;
as.LBU(Xscratch0, offsetof(StackLayout, check_bit), Xstate);
as.BEQZ(Xscratch0, &fail);
EmitA32Terminal(as, ctx, terminal.then_, initial_location, is_single_step);
EmitA32LeafTerminal(as, ctx, terminal.then_, initial_location, is_single_step);
as.Bind(&fail);
EmitA32Terminal(as, ctx, terminal.else_, initial_location, is_single_step);
EmitA32LeafTerminal(as, ctx, terminal.else_, initial_location, is_single_step);
}
void EmitA32Terminal(biscuit::Assembler& as, EmitContext& ctx, IR::Term::CheckHalt terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
@ -189,13 +190,35 @@ void EmitA32Terminal(biscuit::Assembler& as, EmitContext& ctx, IR::Term::CheckHa
as.LWU(Xscratch0, 0, Xhalt);
as.FENCE(biscuit::FenceOrder::RW, biscuit::FenceOrder::RW);
as.BNEZ(Xscratch0, &fail);
EmitA32Terminal(as, ctx, terminal.else_, initial_location, is_single_step);
EmitA32LeafTerminal(as, ctx, terminal.else_, initial_location, is_single_step);
as.Bind(&fail);
EmitRelocation(as, ctx, LinkTarget::ReturnFromRunCode);
}
void EmitA32LeafTerminal(biscuit::Assembler& as, EmitContext& ctx, IR::Term::LeafTerminal terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
if (auto const x = std::get_if<IR::Term::ReturnToDispatch>(&terminal))
return EmitA32LeafTerminal(as, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::LinkBlock>(&terminal))
return EmitA32LeafTerminal(as, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::LinkBlockFast>(&terminal))
return EmitA32LeafTerminal(as, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::PopRSBHint>(&terminal))
return EmitA32LeafTerminal(as, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::FastDispatchHint>(&terminal))
return EmitA32LeafTerminal(as, ctx, *x, initial_location, is_single_step);
UNREACHABLE();
}
void EmitA32Terminal(biscuit::Assembler& as, EmitContext& ctx, IR::Term::Terminal terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
boost::apply_visitor([&](const auto& t) { EmitA32Terminal(as, ctx, t, initial_location, is_single_step); }, terminal);
if (auto const x = std::get_if<IR::Term::LeafTerminal>(&terminal))
return EmitA32LeafTerminal(as, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::If>(&terminal))
return EmitA32Terminal(as, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::CheckBit>(&terminal))
return EmitA32Terminal(as, ctx, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::CheckHalt>(&terminal))
return EmitA32Terminal(as, ctx, *x, initial_location, is_single_step);
UNREACHABLE();
}
void EmitA32Terminal(biscuit::Assembler& as, EmitContext& ctx) {

67
src/dynarmic/src/dynarmic/backend/x64/a32_emit_x64.cpp
View File

@ -175,7 +175,7 @@ finish_this_inst:
if (conf.enable_cycle_counting)
EmitAddCycles(block.CycleCount());
code.mov(rbp, code.qword[rsp + ABI_SHADOW_SPACE + offsetof(StackLayout, abi_base_pointer)]);
EmitTerminal(block.GetTerminal(), ctx.Location().SetSingleStepping(false), ctx.IsSingleStep());
EmitTerminal(block.terminal, ctx.Location().SetSingleStepping(false), ctx.IsSingleStep());
code.int3();
for (auto& deferred_emit : ctx.deferred_emits)
@ -219,7 +219,7 @@ void A32EmitX64::EmitCondPrelude(const A32EmitContext& ctx) {
if (conf.enable_cycle_counting) {
EmitAddCycles(ctx.block.ConditionFailedCycleCount());
}
EmitTerminal(IR::Term::LinkBlock{ctx.block.ConditionFailedLocation()}, ctx.Location().SetSingleStepping(false), ctx.IsSingleStep());
EmitLeafTerminal(IR::Term::LinkBlock{ctx.block.ConditionFailedLocation()}, ctx.Location().SetSingleStepping(false), ctx.IsSingleStep());
code.L(pass);
}
@ -1155,11 +1155,12 @@ void A32EmitX64::EmitSetUpperLocationDescriptor(IR::LocationDescriptor new_locat
}
namespace {
void EmitTerminalImpl(A32EmitX64& e, IR::Term::ReturnToDispatch, IR::LocationDescriptor, bool) {
bool EmitTerminalImpl(A32EmitX64& e, IR::Term::ReturnToDispatch, IR::LocationDescriptor, bool) {
e.code.ReturnFromRunCode();
return true;
}
void EmitTerminalImpl(A32EmitX64& e, IR::Term::LinkBlock terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
bool EmitTerminalImpl(A32EmitX64& e, IR::Term::LinkBlock terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
e.EmitSetUpperLocationDescriptor(terminal.next, initial_location);
if (!e.conf.HasOptimization(OptimizationFlag::BlockLinking) || is_single_step) {
e.code.mov(MJitStateReg(A32::Reg::PC), A32::LocationDescriptor{terminal.next}.PC());
@ -1186,9 +1187,10 @@ void EmitTerminalImpl(A32EmitX64& e, IR::Term::LinkBlock terminal, IR::LocationD
e.PushRSBHelper(rax, rbx, terminal.next);
e.code.ForceReturnFromRunCode();
}
return true;
}
void EmitTerminalImpl(A32EmitX64& e, IR::Term::LinkBlockFast terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
bool EmitTerminalImpl(A32EmitX64& e, IR::Term::LinkBlockFast terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
e.EmitSetUpperLocationDescriptor(terminal.next, initial_location);
if (!e.conf.HasOptimization(OptimizationFlag::BlockLinking) || is_single_step) {
e.code.mov(MJitStateReg(A32::Reg::PC), A32::LocationDescriptor{terminal.next}.PC());
@ -1201,55 +1203,78 @@ void EmitTerminalImpl(A32EmitX64& e, IR::Term::LinkBlockFast terminal, IR::Locat
e.EmitPatchJmp(terminal.next);
}
}
return true;
}
void EmitTerminalImpl(A32EmitX64& e, IR::Term::PopRSBHint, IR::LocationDescriptor, bool is_single_step) {
bool EmitTerminalImpl(A32EmitX64& e, IR::Term::PopRSBHint, IR::LocationDescriptor, bool is_single_step) {
if (!e.conf.HasOptimization(OptimizationFlag::ReturnStackBuffer) || is_single_step) {
e.code.ReturnFromRunCode();
} else {
e.code.jmp(e.terminal_handler_pop_rsb_hint);
}
return true;
}
void EmitTerminalImpl(A32EmitX64& e, IR::Term::FastDispatchHint, IR::LocationDescriptor, bool is_single_step) {
bool EmitTerminalImpl(A32EmitX64& e, IR::Term::FastDispatchHint, IR::LocationDescriptor, bool is_single_step) {
if (!e.conf.HasOptimization(OptimizationFlag::FastDispatch) || is_single_step) {
e.code.ReturnFromRunCode();
} else {
e.code.jmp(e.terminal_handler_fast_dispatch_hint);
}
return true;
}
void EmitTerminalImpl(A32EmitX64& e, IR::Term::If terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
bool EmitTerminalImpl(A32EmitX64& e, IR::Term::If terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
Xbyak::Label pass = e.EmitCond(terminal.if_);
e.EmitTerminal(terminal.else_, initial_location, is_single_step);
e.EmitLeafTerminal(terminal.else_, initial_location, is_single_step);
e.code.L(pass);
e.EmitTerminal(terminal.then_, initial_location, is_single_step);
e.EmitLeafTerminal(terminal.then_, initial_location, is_single_step);
return true;
}
void EmitTerminalImpl(A32EmitX64& e, IR::Term::CheckBit terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
bool EmitTerminalImpl(A32EmitX64& e, IR::Term::CheckBit terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
Xbyak::Label fail;
e.code.cmp(e.code.byte[rsp + ABI_SHADOW_SPACE + offsetof(StackLayout, check_bit)], u8(0));
e.code.jz(fail);
e.EmitTerminal(terminal.then_, initial_location, is_single_step);
e.EmitLeafTerminal(terminal.then_, initial_location, is_single_step);
e.code.L(fail);
e.EmitTerminal(terminal.else_, initial_location, is_single_step);
e.EmitLeafTerminal(terminal.else_, initial_location, is_single_step);
return true;
}
void EmitTerminalImpl(A32EmitX64& e, IR::Term::CheckHalt terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
bool EmitTerminalImpl(A32EmitX64& e, IR::Term::CheckHalt terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
e.code.cmp(dword[e.code.ABI_JIT_PTR + offsetof(A32JitState, halt_reason)], 0);
e.code.jne(e.code.GetForceReturnFromRunCodeAddress());
e.EmitTerminal(terminal.else_, initial_location, is_single_step);
e.EmitLeafTerminal(terminal.else_, initial_location, is_single_step);
return true;
}
void EmitTerminalImpl(A32EmitX64&, IR::Term::Invalid, IR::LocationDescriptor, bool) {
UNREACHABLE();
}
bool A32EmitX64::EmitLeafTerminal(IR::Term::LeafTerminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept {
if (auto const x = std::get_if<IR::Term::ReturnToDispatch>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::LinkBlock>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::LinkBlockFast>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::PopRSBHint>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::FastDispatchHint>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
UNREACHABLE();
}
void A32EmitX64::EmitTerminal(IR::Terminal terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept {
boost::apply_visitor([this, initial_location, is_single_step](auto x) {
EmitTerminalImpl(*this, x, initial_location, is_single_step);
}, terminal);
bool A32EmitX64::EmitTerminal(IR::Term::Terminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept {
if (auto const e = std::get_if<IR::Term::LeafTerminal>(&terminal))
return EmitLeafTerminal(*e, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::If>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::CheckBit>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::CheckHalt>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
UNREACHABLE();
}
void A32EmitX64::EmitPatchJg(const IR::LocationDescriptor& target_desc, CodePtr target_code_ptr) {

3
src/dynarmic/src/dynarmic/backend/x64/a32_emit_x64.h
View File

@ -112,7 +112,8 @@ public:
// Terminal instruction emitters
void EmitSetUpperLocationDescriptor(IR::LocationDescriptor new_location, IR::LocationDescriptor old_location);
void EmitTerminal(IR::Terminal terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept override;
bool EmitLeafTerminal(IR::Term::LeafTerminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept override;
bool EmitTerminal(IR::Term::Terminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept override;
// Patching
void Unpatch(const IR::LocationDescriptor& target_desc) override;

68
src/dynarmic/src/dynarmic/backend/x64/a64_emit_x64.cpp
View File

@ -12,6 +12,7 @@
#include <fmt/ostream.h>
#include "common/assert.h"
#include "common/common_types.h"
#include "dynarmic/ir/terminal.h"
#include "dynarmic/mcl/integer_of_size.hpp"
#include <boost/container/static_vector.hpp>
@ -147,7 +148,7 @@ finish_this_inst:
if (conf.enable_cycle_counting)
EmitAddCycles(block.CycleCount());
code.mov(rbp, code.qword[rsp + ABI_SHADOW_SPACE + offsetof(StackLayout, abi_base_pointer)]);
EmitTerminal(block.GetTerminal(), ctx.Location().SetSingleStepping(false), ctx.IsSingleStep());
EmitTerminal(block.terminal, ctx.Location().SetSingleStepping(false), ctx.IsSingleStep());
code.int3();
for (auto& deferred_emit : ctx.deferred_emits)
deferred_emit();
@ -617,11 +618,12 @@ std::string A64EmitX64::LocationDescriptorToFriendlyName(const IR::LocationDescr
}
namespace {
void EmitTerminalImpl(A64EmitX64& e, IR::Term::ReturnToDispatch, IR::LocationDescriptor, bool) {
bool EmitTerminalImpl(A64EmitX64& e, IR::Term::ReturnToDispatch, IR::LocationDescriptor, bool) {
e.code.ReturnFromRunCode();
return true;
}
void EmitTerminalImpl(A64EmitX64& e, IR::Term::LinkBlock terminal, IR::LocationDescriptor, bool is_single_step) {
bool EmitTerminalImpl(A64EmitX64& e, IR::Term::LinkBlock terminal, IR::LocationDescriptor, bool is_single_step) {
// Used for patches and linking
if (e.conf.HasOptimization(OptimizationFlag::BlockLinking) && !is_single_step) {
if (e.conf.enable_cycle_counting) {
@ -649,9 +651,10 @@ void EmitTerminalImpl(A64EmitX64& e, IR::Term::LinkBlock terminal, IR::LocationD
e.code.mov(qword[e.code.ABI_JIT_PTR + offsetof(A64JitState, pc)], rax);
e.code.ReturnFromRunCode();
}
return true;
}
void EmitTerminalImpl(A64EmitX64& e, IR::Term::LinkBlockFast terminal, IR::LocationDescriptor, bool is_single_step) {
bool EmitTerminalImpl(A64EmitX64& e, IR::Term::LinkBlockFast terminal, IR::LocationDescriptor, bool is_single_step) {
if (e.conf.HasOptimization(OptimizationFlag::BlockLinking) && !is_single_step) {
e.patch_information[terminal.next].jmp.push_back(e.code.getCurr());
if (auto next_bb = e.GetBasicBlock(terminal.next)) {
@ -664,63 +667,86 @@ void EmitTerminalImpl(A64EmitX64& e, IR::Term::LinkBlockFast terminal, IR::Locat
e.code.mov(qword[e.code.ABI_JIT_PTR + offsetof(A64JitState, pc)], rax);
e.code.ReturnFromRunCode();
}
return true;
}
void EmitTerminalImpl(A64EmitX64& e, IR::Term::PopRSBHint, IR::LocationDescriptor, bool is_single_step) {
bool EmitTerminalImpl(A64EmitX64& e, IR::Term::PopRSBHint, IR::LocationDescriptor, bool is_single_step) {
if (e.conf.HasOptimization(OptimizationFlag::ReturnStackBuffer) && !is_single_step) {
e.code.jmp(e.terminal_handler_pop_rsb_hint);
} else {
e.code.ReturnFromRunCode();
}
return true;
}
void EmitTerminalImpl(A64EmitX64& e, IR::Term::FastDispatchHint, IR::LocationDescriptor, bool is_single_step) {
bool EmitTerminalImpl(A64EmitX64& e, IR::Term::FastDispatchHint, IR::LocationDescriptor, bool is_single_step) {
if (!e.conf.HasOptimization(OptimizationFlag::FastDispatch) || is_single_step) {
e.code.ReturnFromRunCode();
} else {
e.code.jmp(e.terminal_handler_fast_dispatch_hint);
}
return true;
}
void EmitTerminalImpl(A64EmitX64& e, IR::Term::If terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
bool EmitTerminalImpl(A64EmitX64& e, IR::Term::If terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
switch (terminal.if_) {
case IR::Cond::AL:
case IR::Cond::NV:
e.EmitTerminal(terminal.then_, initial_location, is_single_step);
e.EmitLeafTerminal(terminal.then_, initial_location, is_single_step);
break;
default:
Xbyak::Label pass = e.EmitCond(terminal.if_);
e.EmitTerminal(terminal.else_, initial_location, is_single_step);
e.EmitLeafTerminal(terminal.else_, initial_location, is_single_step);
e.code.L(pass);
e.EmitTerminal(terminal.then_, initial_location, is_single_step);
e.EmitLeafTerminal(terminal.then_, initial_location, is_single_step);
break;
}
return true;
}
void EmitTerminalImpl(A64EmitX64& e, IR::Term::CheckBit terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
bool EmitTerminalImpl(A64EmitX64& e, IR::Term::CheckBit terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
Xbyak::Label fail;
e.code.cmp(e.code.byte[rsp + ABI_SHADOW_SPACE + offsetof(StackLayout, check_bit)], u8(0));
e.code.jz(fail);
e.EmitTerminal(terminal.then_, initial_location, is_single_step);
e.EmitLeafTerminal(terminal.then_, initial_location, is_single_step);
e.code.L(fail);
e.EmitTerminal(terminal.else_, initial_location, is_single_step);
e.EmitLeafTerminal(terminal.else_, initial_location, is_single_step);
return true;
}
void EmitTerminalImpl(A64EmitX64& e, IR::Term::CheckHalt terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
bool EmitTerminalImpl(A64EmitX64& e, IR::Term::CheckHalt terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
e.code.cmp(dword[e.code.ABI_JIT_PTR + offsetof(A64JitState, halt_reason)], 0);
e.code.jne(e.code.GetForceReturnFromRunCodeAddress());
e.EmitTerminal(terminal.else_, initial_location, is_single_step);
e.EmitLeafTerminal(terminal.else_, initial_location, is_single_step);
return true;
}
void EmitTerminalImpl(A64EmitX64&, IR::Term::Invalid, IR::LocationDescriptor, bool) {
UNREACHABLE();
}
bool A64EmitX64::EmitLeafTerminal(IR::Term::LeafTerminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept {
if (auto const x = std::get_if<IR::Term::ReturnToDispatch>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::LinkBlock>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::LinkBlockFast>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::PopRSBHint>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::FastDispatchHint>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
UNREACHABLE();
}
void A64EmitX64::EmitTerminal(IR::Terminal terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept {
boost::apply_visitor([this, initial_location, is_single_step](auto x) {
EmitTerminalImpl(*this, x, initial_location, is_single_step);
}, terminal);
bool A64EmitX64::EmitTerminal(IR::Term::Terminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept {
if (auto const x = std::get_if<IR::Term::LeafTerminal>(&terminal))
return EmitLeafTerminal(*x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::If>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::CheckBit>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
if (auto const x = std::get_if<IR::Term::CheckHalt>(&terminal))
return EmitTerminalImpl(*this, *x, initial_location, is_single_step);
UNREACHABLE();
}
void A64EmitX64::EmitPatchJg(const IR::LocationDescriptor& target_desc, CodePtr target_code_ptr) {

3
src/dynarmic/src/dynarmic/backend/x64/a64_emit_x64.h
View File

@ -107,7 +107,8 @@ public:
void EmitExclusiveWriteMemoryInline(A64EmitContext& ctx, IR::Inst* inst);
// Terminal instruction emitters
void EmitTerminal(IR::Terminal terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept override;
bool EmitLeafTerminal(IR::Term::LeafTerminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept override;
bool EmitTerminal(IR::Term::Terminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept override;
// Patching
void Unpatch(const IR::LocationDescriptor& target_desc) override;

3
src/dynarmic/src/dynarmic/backend/x64/emit_x64.h
View File

@ -111,7 +111,8 @@ public:
#ifndef NDEBUG
void EmitVerboseDebuggingOutput(RegAlloc& reg_alloc);
#endif
virtual void EmitTerminal(IR::Terminal terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept = 0;
virtual bool EmitLeafTerminal(IR::Term::LeafTerminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept = 0;
virtual bool EmitTerminal(IR::Term::Terminal const& terminal, IR::LocationDescriptor initial_location, bool is_single_step) noexcept = 0;
// Patching
struct PatchInformation {

65
src/dynarmic/src/dynarmic/ir/basic_block.cpp
View File

@ -66,43 +66,44 @@ void Block::Reset(LocationDescriptor location_) noexcept {
location = location_;
end_location = location_;
cond = Cond::AL;
terminal = Term::Invalid{};
terminal = std::monostate{};
cond_failed_cycle_count = 0;
cycle_count = 0;
ASSERT(instructions.size() == 0);
}
static std::string TerminalToString(const Terminal& terminal_variant) noexcept {
struct : boost::static_visitor<std::string> {
std::string operator()(const Term::Invalid&) const {
return "<invalid terminal>";
}
std::string operator()(const Term::ReturnToDispatch&) const {
return "ReturnToDispatch{}";
}
std::string operator()(const Term::LinkBlock& terminal) const {
return fmt::format("LinkBlock{{{}}}", terminal.next);
}
std::string operator()(const Term::LinkBlockFast& terminal) const {
return fmt::format("LinkBlockFast{{{}}}", terminal.next);
}
std::string operator()(const Term::PopRSBHint&) const {
return "PopRSBHint{}";
}
std::string operator()(const Term::FastDispatchHint&) const {
return "FastDispatchHint{}";
}
std::string operator()(const Term::If& terminal) const {
return fmt::format("If{{{}, {}, {}}}", A64::CondToString(terminal.if_), TerminalToString(terminal.then_), TerminalToString(terminal.else_));
}
std::string operator()(const Term::CheckBit& terminal) const {
return fmt::format("CheckBit{{{}, {}}}", TerminalToString(terminal.then_), TerminalToString(terminal.else_));
}
std::string operator()(const Term::CheckHalt& terminal) const {
return fmt::format("CheckHalt{{{}}}", TerminalToString(terminal.else_));
}
} visitor;
return boost::apply_visitor(visitor, terminal_variant);
static std::string TerminalToString(const Term::Terminal& terminal_variant) noexcept {
// struct : boost::static_visitor<std::string> {
// std::string operator()(const std::monostate&) const {
// return "<invalid>";
// }
// std::string operator()(const Term::ReturnToDispatch&) const {
// return "ReturnToDispatch{}";
// }
// std::string operator()(const Term::LinkBlock& terminal) const {
// return fmt::format("LinkBlock{{{}}}", terminal.next);
// }
// std::string operator()(const Term::LinkBlockFast& terminal) const {
// return fmt::format("LinkBlockFast{{{}}}", terminal.next);
// }
// std::string operator()(const Term::PopRSBHint&) const {
// return "PopRSBHint{}";
// }
// std::string operator()(const Term::FastDispatchHint&) const {
// return "FastDispatchHint{}";
// }
// std::string operator()(const Term::If& terminal) const {
// return fmt::format("If{{{}, {}, {}}}", A64::CondToString(terminal.if_), TerminalToString(terminal.then_), TerminalToString(terminal.else_));
// }
// std::string operator()(const Term::CheckBit& terminal) const {
// return fmt::format("CheckBit{{{}, {}}}", TerminalToString(terminal.then_), TerminalToString(terminal.else_));
// }
// std::string operator()(const Term::CheckHalt& terminal) const {
// return fmt::format("CheckHalt{{{}}}", TerminalToString(terminal.else_));
// }
// } visitor;
// return boost::apply_visitor(visitor, terminal_variant);
return "";
}
std::string DumpBlock(const IR::Block& block) noexcept {

10
src/dynarmic/src/dynarmic/ir/basic_block.h
View File

@ -114,22 +114,22 @@ public:
}
/// Gets the terminal instruction for this basic block.
inline Terminal GetTerminal() const noexcept {
inline Term::Terminal GetTerminal() const noexcept {
return terminal;
}
/// Sets the terminal instruction for this basic block.
inline void SetTerminal(Terminal term) noexcept {
inline void SetTerminal(Term::Terminal term) noexcept {
ASSERT(!HasTerminal() && "Terminal has already been set.");
terminal = std::move(term);
}
/// Replaces the terminal instruction for this basic block.
inline void ReplaceTerminal(Terminal term) noexcept {
inline void ReplaceTerminal(Term::Terminal term) noexcept {
ASSERT(HasTerminal() && "Terminal has not been set.");
terminal = std::move(term);
}
/// Determines whether or not this basic block has a terminal instruction.
inline bool HasTerminal() const noexcept {
return terminal.which() != 0;
return !std::holds_alternative<std::monostate>(terminal);
}
/// Gets a mutable reference to the cycle count for this basic block.
@ -156,7 +156,7 @@ public:
/// Conditional to pass in order to execute this block
Cond cond = Cond::AL;
/// Terminal instruction of this block.
Terminal terminal = Term::Invalid{};
Term::Terminal terminal = std::monostate{};
/// Number of cycles this block takes to execute if the conditional fails.
size_t cond_failed_cycle_count = 0;
/// Number of cycles this block takes to execute.

2
src/dynarmic/src/dynarmic/ir/ir_emitter.h
View File

@ -2943,7 +2943,7 @@ public:
Inst(Opcode::CallHostFunction, Imm64(std::bit_cast<u64>(fn)), arg1, arg2, arg3);
}
void SetTerm(const Terminal& terminal) {
void SetTerm(const Term::Terminal& terminal) {
block.SetTerminal(terminal);
}

123
src/dynarmic/src/dynarmic/ir/terminal.h
View File

@ -8,7 +8,7 @@
#pragma once
#include <boost/variant.hpp>
#include <variant>
#include "common/common_types.h"
#include "dynarmic/ir/cond.h"
@ -17,106 +17,89 @@
namespace Dynarmic::IR {
namespace Term {
struct Invalid {};
/**
* This terminal instruction returns control to the dispatcher.
* The dispatcher will use the current cpu state to determine what comes next.
*/
/// This terminal instruction returns control to the dispatcher.
/// The dispatcher will use the current cpu state to determine what comes next.
struct ReturnToDispatch {};
/**
* This terminal instruction jumps to the basic block described by `next` if we have enough
* cycles remaining. If we do not have enough cycles remaining, we return to the
* dispatcher, which will return control to the host.
*/
/// This terminal instruction jumps to the basic block described by `next` if we have enough
/// cycles remaining. If we do not have enough cycles remaining, we return to the
/// dispatcher, which will return control to the host.
struct LinkBlock {
explicit LinkBlock(const LocationDescriptor& next_)
: next(next_) {}
explicit LinkBlock(const LocationDescriptor& next_) : next(next_) {}
LocationDescriptor next; ///< Location descriptor for next block.
};
/**
* This terminal instruction jumps to the basic block described by `next` unconditionally.
* This is an optimization and MUST only be emitted when this is guaranteed not to result
* in hanging, even in the face of other optimizations. (In practice, this means that only
* forward jumps to short-ish blocks would use this instruction.)
* A backend that doesn't support this optimization may choose to implement this exactly
* as LinkBlock.
*/
/// This terminal instruction jumps to the basic block described by `next` unconditionally.
/// This is an optimization and MUST only be emitted when this is guaranteed not to result
/// in hanging, even in the face of other optimizations. (In practice, this means that only
/// forward jumps to short-ish blocks would use this instruction.)
/// A backend that doesn't support this optimization may choose to implement this exactly
/// as LinkBlock.
struct LinkBlockFast {
explicit LinkBlockFast(const LocationDescriptor& next_)
: next(next_) {}
explicit LinkBlockFast(const LocationDescriptor& next_) : next(next_) {}
LocationDescriptor next; ///< Location descriptor for next block.
};
/**
* This terminal instruction checks the top of the Return Stack Buffer against the current
* location descriptor. If RSB lookup fails, control is returned to the dispatcher.
* This is an optimization for faster function calls. A backend that doesn't support
* this optimization or doesn't have a RSB may choose to implement this exactly as
* ReturnToDispatch.
*/
/// This terminal instruction checks the top of the Return Stack Buffer against the current
/// location descriptor. If RSB lookup fails, control is returned to the dispatcher.
/// This is an optimization for faster function calls. A backend that doesn't support
/// this optimization or doesn't have a RSB may choose to implement this exactly as
/// ReturnToDispatch.
struct PopRSBHint {};
/**
* This terminal instruction performs a lookup of the current location descriptor in the
* fast dispatch lookup table. A backend that doesn't support this optimization may choose
* to implement this exactly as ReturnToDispatch.
*/
/// This terminal instruction performs a lookup of the current location descriptor in the
/// fast dispatch lookup table. A backend that doesn't support this optimization may choose
/// to implement this exactly as ReturnToDispatch.
struct FastDispatchHint {};
struct If;
struct CheckBit;
struct CheckHalt;
/// A Terminal is the terminal instruction in a MicroBlock.
using Terminal = boost::variant<
Invalid,
/// Non recursive kind of terminal
using LeafTerminal = std::variant<
std::monostate,
ReturnToDispatch,
LinkBlock,
LinkBlockFast,
PopRSBHint,
FastDispatchHint,
boost::recursive_wrapper<If>,
boost::recursive_wrapper<CheckBit>,
boost::recursive_wrapper<CheckHalt>>;
/**
* This terminal instruction conditionally executes one terminal or another depending
* on the run-time state of the ARM flags.
*/
FastDispatchHint
>;
/// A Terminal is the terminal instruction in a MicroBlock.
using Terminal = std::variant<
std::monostate,
LeafTerminal,
If,
CheckBit,
CheckHalt
>;
/// This terminal instruction conditionally executes one terminal or another depending
/// on the run-time state of the ARM flags.
struct If {
If(Cond if_, Terminal then_, Terminal else_)
: if_(if_), then_(std::move(then_)), else_(std::move(else_)) {}
explicit If(Cond if_, LeafTerminal then_, LeafTerminal else_) : if_(if_), then_(std::move(then_)), else_(std::move(else_)) {}
Cond if_;
Terminal then_;
Terminal else_;
LeafTerminal then_;
LeafTerminal else_;
};
/**
* This terminal instruction conditionally executes one terminal or another depending
* on the run-time state of the check bit.
* then_ is executed if the check bit is non-zero, otherwise else_ is executed.
*/
/// This terminal instruction conditionally executes one terminal or another depending
/// on the run-time state of the check bit.
/// then_ is executed if the check bit is non-zero, otherwise else_ is executed.
struct CheckBit {
CheckBit(Terminal then_, Terminal else_)
: then_(std::move(then_)), else_(std::move(else_)) {}
Terminal then_;
Terminal else_;
explicit CheckBit(LeafTerminal then_, LeafTerminal else_) : then_(std::move(then_)), else_(std::move(else_)) {}
LeafTerminal then_;
LeafTerminal else_;
};
/**
* This terminal instruction checks if a halt was requested. If it wasn't, else_ is
* executed.
*/
/// This terminal instruction checks if a halt was requested. If it wasn't, else_ is
/// executed.
struct CheckHalt {
explicit CheckHalt(Terminal else_)
: else_(std::move(else_)) {}
Terminal else_;
explicit CheckHalt(LeafTerminal else_) : else_(std::move(else_)) {}
LeafTerminal else_;
};
} // namespace Term
using Term::Terminal;
} // namespace Dynarmic::IR

40
src/dynarmic/tests/A32/fuzz_arm.cpp
View File

@ -43,32 +43,20 @@ namespace {
using namespace Dynarmic;
template<typename Fn>
bool AnyLocationDescriptorForTerminalHas(IR::Terminal terminal, Fn fn) {
return boost::apply_visitor([&](auto t) -> bool {
using T = std::decay_t<decltype(t)>;
if constexpr (std::is_same_v<T, IR::Term::Invalid>) {
return false;
} else if constexpr (std::is_same_v<T, IR::Term::ReturnToDispatch>) {
return false;
} else if constexpr (std::is_same_v<T, IR::Term::LinkBlock>) {
return fn(t.next);
} else if constexpr (std::is_same_v<T, IR::Term::LinkBlockFast>) {
return fn(t.next);
} else if constexpr (std::is_same_v<T, IR::Term::PopRSBHint>) {
return false;
} else if constexpr (std::is_same_v<T, IR::Term::FastDispatchHint>) {
return false;
} else if constexpr (std::is_same_v<T, IR::Term::If>) {
return AnyLocationDescriptorForTerminalHas(t.then_, fn) || AnyLocationDescriptorForTerminalHas(t.else_, fn);
} else if constexpr (std::is_same_v<T, IR::Term::CheckBit>) {
return AnyLocationDescriptorForTerminalHas(t.then_, fn) || AnyLocationDescriptorForTerminalHas(t.else_, fn);
} else if constexpr (std::is_same_v<T, IR::Term::CheckHalt>) {
return AnyLocationDescriptorForTerminalHas(t.else_, fn);
} else {
ASSERT(false && "Invalid terminal type");
return false;
}
}, terminal);
bool AnyLocationDescriptorForTerminalHas(IR::Term::Terminal terminal, Fn fn) {
if (auto const e = std::get_if<IR::Term::LeafTerminal>(&terminal)) {
if (auto const x = std::get_if<IR::Term::LinkBlock>(e))
return fn(x->next);
if (auto const x = std::get_if<IR::Term::LinkBlockFast>(e))
return fn(x->next);
}
if (auto const x = std::get_if<IR::Term::If>(&terminal))
return AnyLocationDescriptorForTerminalHas(x->then_, fn) || AnyLocationDescriptorForTerminalHas(x->else_, fn);
if (auto const x = std::get_if<IR::Term::CheckBit>(&terminal))
return AnyLocationDescriptorForTerminalHas(x->then_, fn) || AnyLocationDescriptorForTerminalHas(x->else_, fn);
if (auto const x = std::get_if<IR::Term::CheckHalt>(&terminal))
return AnyLocationDescriptorForTerminalHas(x->else_, fn);
return false;
}
bool ShouldTestInst(u32 instruction, u32 pc, bool is_thumb, bool is_last_inst, A32::ITState it_state = {}) {

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