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emit_arm64: Fix 1MB block link limit

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This commit is contained in:
Merry 2022-11-11 23:56:52 +00:00
parent 424fdb5c50
commit 9d6758b4ae
4 changed files with 16 additions and 38 deletions
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30
src/dynarmic/backend/arm64/a32_address_space.cpp
View file

@ -329,33 +329,13 @@ static void LinkBlockLinks(const CodePtr entry_point, const CodePtr target_ptr,
using namespace oaknut;
using namespace oaknut::util;
for (auto [ptr_offset, type] : block_relocations_list) {
for (auto [ptr_offset] : block_relocations_list) {
CodeGenerator c{reinterpret_cast<u32*>(entry_point + ptr_offset)};
switch (type) {
case BlockLinkType::LinkBlockUnconditionally:
if (target_ptr) {
c.B((void*)target_ptr);
} else {
c.NOP();
}
break;
case BlockLinkType::LinkBlockIfGreater:
if (target_ptr) {
c.B(GE, (void*)target_ptr);
} else {
c.NOP();
}
break;
case BlockLinkType::LinkBlockIfWscratch0IsZero:
if (target_ptr) {
c.CBZ(Wscratch0, (void*)target_ptr);
} else {
c.NOP();
}
break;
default:
ASSERT_FALSE("Invalid block relocation type");
if (target_ptr) {
c.B((void*)target_ptr);
} else {
c.NOP();
}
}
}

4
src/dynarmic/backend/arm64/emit_arm64.cpp
View file

@ -216,8 +216,8 @@ void EmitRelocation(oaknut::CodeGenerator& code, EmitContext& ctx, LinkTarget li
code.NOP();
}
void EmitRelocation(oaknut::CodeGenerator& code, EmitContext& ctx, BlockLinkType link_type, const IR::LocationDescriptor& descriptor) {
ctx.ebi.block_relocations[descriptor].emplace_back(BlockRelocation{code.ptr<CodePtr>() - ctx.ebi.entry_point, link_type});
void EmitBlockLinkRelocation(oaknut::CodeGenerator& code, EmitContext& ctx, const IR::LocationDescriptor& descriptor) {
ctx.ebi.block_relocations[descriptor].emplace_back(BlockRelocation{code.ptr<CodePtr>() - ctx.ebi.entry_point});
code.NOP();
}

9
src/dynarmic/backend/arm64/emit_arm64.h
View file

@ -66,12 +66,6 @@ enum class LinkTarget {
GetTicksRemaining,
};
enum class BlockLinkType {
LinkBlockUnconditionally,
LinkBlockIfGreater,
LinkBlockIfWscratch0IsZero,
};
struct Relocation {
std::ptrdiff_t code_offset;
LinkTarget target;
@ -79,7 +73,6 @@ struct Relocation {
struct BlockRelocation {
std::ptrdiff_t code_offset;
BlockLinkType type;
};
struct EmittedBlockInfo {
@ -113,7 +106,7 @@ EmittedBlockInfo EmitArm64(oaknut::CodeGenerator& code, IR::Block block, const E
template<IR::Opcode op>
void EmitIR(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst);
void EmitRelocation(oaknut::CodeGenerator& code, EmitContext& ctx, LinkTarget link_target);
void EmitRelocation(oaknut::CodeGenerator& code, EmitContext& ctx, BlockLinkType type, const IR::LocationDescriptor& descriptor);
void EmitBlockLinkRelocation(oaknut::CodeGenerator& code, EmitContext& ctx, const IR::LocationDescriptor& descriptor);
oaknut::Label EmitA32Cond(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Cond cond);
void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx);
void EmitA32ConditionFailedTerminal(oaknut::CodeGenerator& code, EmitContext& ctx);

11
src/dynarmic/backend/arm64/emit_arm64_a32.cpp
View file

@ -61,16 +61,21 @@ void EmitSetUpperLocationDescriptor(oaknut::CodeGenerator& code, EmitContext& ct
void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::LinkBlock terminal, IR::LocationDescriptor initial_location, bool is_single_step) {
EmitSetUpperLocationDescriptor(code, ctx, terminal.next, initial_location);
oaknut::Label fail;
if (ctx.conf.HasOptimization(OptimizationFlag::BlockLinking) && !is_single_step) {
if (ctx.conf.enable_cycle_counting) {
code.CMP(Xticks, 0);
EmitRelocation(code, ctx, BlockLinkType::LinkBlockIfGreater, terminal.next);
code.B(LE, fail);
EmitBlockLinkRelocation(code, ctx, terminal.next);
} else {
code.LDAR(Wscratch0, Xhalt);
EmitRelocation(code, ctx, BlockLinkType::LinkBlockIfWscratch0IsZero, terminal.next);
code.CBNZ(Wscratch0, fail);
EmitBlockLinkRelocation(code, ctx, terminal.next);
}
}
code.l(fail);
code.MOV(Wscratch0, A32::LocationDescriptor{terminal.next}.PC());
code.STR(Wscratch0, Xstate, offsetof(A32JitState, regs) + sizeof(u32) * 15);
EmitRelocation(code, ctx, LinkTarget::ReturnToDispatcher);
@ -80,7 +85,7 @@ void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Li
EmitSetUpperLocationDescriptor(code, ctx, terminal.next, initial_location);
if (ctx.conf.HasOptimization(OptimizationFlag::BlockLinking) && !is_single_step) {
EmitRelocation(code, ctx, BlockLinkType::LinkBlockUnconditionally, terminal.next);
EmitBlockLinkRelocation(code, ctx, terminal.next);
}
code.MOV(Wscratch0, A32::LocationDescriptor{terminal.next}.PC());