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emit_arm64: Add BlockRelocationType::MoveToScratch0

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This commit is contained in:
Merry 2023-02-15 11:42:22 +00:00
parent a179e2f2bb
commit 15e889fbe3
5 changed files with 45 additions and 15 deletions
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16
src/dynarmic/backend/arm64/address_space.cpp
View file

@ -124,14 +124,28 @@ static void LinkBlockLinks(const CodePtr entry_point, const CodePtr target_ptr,
using namespace oaknut;
using namespace oaknut::util;
for (auto [ptr_offset] : block_relocations_list) {
for (auto [ptr_offset, type] : block_relocations_list) {
CodeGenerator c{reinterpret_cast<u32*>(entry_point + ptr_offset)};
switch (type) {
case BlockRelocationType::Branch:
if (target_ptr) {
c.B((void*)target_ptr);
} else {
c.NOP();
}
break;
case BlockRelocationType::MoveToScratch0:
if (target_ptr) {
c.ADRL(Xscratch0, (void*)target_ptr);
} else {
c.NOP();
c.NOP();
}
break;
default:
ASSERT_FALSE("Invalid BlockRelocationType");
}
}
}

14
src/dynarmic/backend/arm64/emit_arm64.cpp
View file

@ -256,9 +256,19 @@ void EmitRelocation(oaknut::CodeGenerator& code, EmitContext& ctx, LinkTarget li
code.NOP();
}
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});
void EmitBlockLinkRelocation(oaknut::CodeGenerator& code, EmitContext& ctx, const IR::LocationDescriptor& descriptor, BlockRelocationType type) {
ctx.ebi.block_relocations[descriptor].emplace_back(BlockRelocation{code.ptr<CodePtr>() - ctx.ebi.entry_point, type});
switch (type) {
case BlockRelocationType::Branch:
code.NOP();
break;
case BlockRelocationType::MoveToScratch0:
code.NOP();
code.NOP();
break;
default:
UNREACHABLE();
}
}
} // namespace Dynarmic::Backend::Arm64

8
src/dynarmic/backend/arm64/emit_arm64.h
View file

@ -91,8 +91,14 @@ struct Relocation {
LinkTarget target;
};
enum class BlockRelocationType {
Branch,
MoveToScratch0,
};
struct BlockRelocation {
std::ptrdiff_t code_offset;
BlockRelocationType type;
};
struct EmittedBlockInfo {
@ -165,7 +171,7 @@ 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 EmitBlockLinkRelocation(oaknut::CodeGenerator& code, EmitContext& ctx, const IR::LocationDescriptor& descriptor);
void EmitBlockLinkRelocation(oaknut::CodeGenerator& code, EmitContext& ctx, const IR::LocationDescriptor& descriptor, BlockRelocationType type);
oaknut::Label EmitA32Cond(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Cond cond);
oaknut::Label EmitA64Cond(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Cond cond);
void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx);

6
src/dynarmic/backend/arm64/emit_arm64_a32.cpp
View file

@ -67,11 +67,11 @@ void EmitA32Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Li
if (ctx.conf.enable_cycle_counting) {
code.CMP(Xticks, 0);
code.B(LE, fail);
EmitBlockLinkRelocation(code, ctx, terminal.next);
EmitBlockLinkRelocation(code, ctx, terminal.next, BlockRelocationType::Branch);
} else {
code.LDAR(Wscratch0, Xhalt);
code.CBNZ(Wscratch0, fail);
EmitBlockLinkRelocation(code, ctx, terminal.next);
EmitBlockLinkRelocation(code, ctx, terminal.next, BlockRelocationType::Branch);
}
}
@ -85,7 +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) {
EmitBlockLinkRelocation(code, ctx, terminal.next);
EmitBlockLinkRelocation(code, ctx, terminal.next, BlockRelocationType::Branch);
}
code.MOV(Wscratch0, A32::LocationDescriptor{terminal.next}.PC());

6
src/dynarmic/backend/arm64/emit_arm64_a64.cpp
View file

@ -46,11 +46,11 @@ void EmitA64Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Li
if (ctx.conf.enable_cycle_counting) {
code.CMP(Xticks, 0);
code.B(LE, fail);
EmitBlockLinkRelocation(code, ctx, terminal.next);
EmitBlockLinkRelocation(code, ctx, terminal.next, BlockRelocationType::Branch);
} else {
code.LDAR(Wscratch0, Xhalt);
code.CBNZ(Wscratch0, fail);
EmitBlockLinkRelocation(code, ctx, terminal.next);
EmitBlockLinkRelocation(code, ctx, terminal.next, BlockRelocationType::Branch);
}
}
@ -62,7 +62,7 @@ void EmitA64Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::Li
void EmitA64Terminal(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Term::LinkBlockFast terminal, IR::LocationDescriptor, bool is_single_step) {
if (ctx.conf.HasOptimization(OptimizationFlag::BlockLinking) && !is_single_step) {
EmitBlockLinkRelocation(code, ctx, terminal.next);
EmitBlockLinkRelocation(code, ctx, terminal.next, BlockRelocationType::Branch);
}
code.MOV(Xscratch0, A64::LocationDescriptor{terminal.next}.PC());