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N64Recomp/include/generator.h

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Modding Support PR 1 (Instruction tables, modding support, mod symbol format, library conversion) (#89) * Initial implementation of binary operation table * Initial implementation of unary operation table * More binary op types, moved binary expression string generation into separate function * Added and implemented conditional branch instruction table * Fixed likely swap on bgezal, fixed extra indent branch close and missing indent on branch statement * Add operands for other uses of float registers * Added CHECK_FR generation to binary operation processing, moved float comparison instructions to binary op table * Finished moving float arithmetic instructions to operation tables * Added store instruction operation table * Created Generator interface, separated operation types and tables and C generation code into new files * Fix mov.d using the wrong input operand * Move recompiler core logic into a core library and make the existing CLI consume the core library * Removed unnecessary config input to recompilation functions * Moved parts of recomp_port.h into new internal headers in src folder * Changed recomp port naming to N64Recomp * Remove some unused code and document which Context fields are actually required for recompilation * Implement mod symbol parsing * Restructure mod symbols to make replacements global instead of per-section * Refactor elf parsing into static Context method for reusability * Move elf parsing into a separate library * WIP elf to mod tool, currently working without relocations or API exports/imports * Make mod tool emit relocs and patch binary for non-relocatable symbol references as needed * Implemented writing import and exports in the mod tool * Add dependencies to the mod symbol format, finish exporting and importing of mod symbols * Add first pass offline mod recompiler (generates C from mods that can be compiled and linked into a dynamic library) * Add strict mode and ability to generate exports for normal recompilation (for patches) * Move mod context fields into base context, move import symbols into separate vector, misc cleanup * Some cleanup by making some Context members private * Add events (from dependencies and exported) and callbacks to the mod symbol format and add support to them in elf parsing * Add runtime-driven fields to offline mod recompiler, fix event symbol relocs using the wrong section in the mod tool * Move file header writing outside of function recompilation * Allow cross-section relocations, encode exact target section in mod relocations, add way to tag reference symbol relocations * Add local symbol addresses array to offline mod recompiler output and rename original one to reference section addresses * Add more comments to the offline mod recompiler's output * Fix handling of section load addresses to match objcopy behavior, added event parsing to dependency tomls, minor cleanup * Fixed incorrect size used for finding section segments * Add missing includes for libstdc++ * Rework callbacks and imports to use the section name for identifying the dependency instead of relying on per-dependency tomls
2024-08-27 03:06:34 +00:00
#ifndef __GENERATOR_H__
#define __GENERATOR_H__
#include "n64recomp.h"
#include "operations.h"
namespace N64Recomp {
struct InstructionContext {
int rd;
int rs;
int rt;
int sa;
int fd;
int fs;
int ft;
int cop1_cs;
uint16_t imm16;
bool reloc_tag_as_reference;
RelocType reloc_type;
uint32_t reloc_section_index;
uint32_t reloc_target_section_offset;
};
class Generator {
public:
virtual void process_binary_op(std::ostream& output_file, const BinaryOp& op, const InstructionContext& ctx) const = 0;
virtual void process_unary_op(std::ostream& output_file, const UnaryOp& op, const InstructionContext& ctx) const = 0;
virtual void process_store_op(std::ostream& output_file, const StoreOp& op, const InstructionContext& ctx) const = 0;
virtual void emit_branch_condition(std::ostream& output_file, const ConditionalBranchOp& op, const InstructionContext& ctx) const = 0;
virtual void emit_branch_close(std::ostream& output_file) const = 0;
virtual void emit_check_fr(std::ostream& output_file, int fpr) const = 0;
virtual void emit_check_nan(std::ostream& output_file, int fpr, bool is_double) const = 0;
};
class CGenerator final : Generator {
public:
CGenerator() = default;
void process_binary_op(std::ostream& output_file, const BinaryOp& op, const InstructionContext& ctx) const final;
void process_unary_op(std::ostream& output_file, const UnaryOp& op, const InstructionContext& ctx) const final;
void process_store_op(std::ostream& output_file, const StoreOp& op, const InstructionContext& ctx) const final;
void emit_branch_condition(std::ostream& output_file, const ConditionalBranchOp& op, const InstructionContext& ctx) const final;
void emit_branch_close(std::ostream& output_file) const final;
void emit_check_fr(std::ostream& output_file, int fpr) const final;
void emit_check_nan(std::ostream& output_file, int fpr, bool is_double) const final;
private:
void get_operand_string(Operand operand, UnaryOpType operation, const InstructionContext& context, std::string& operand_string) const;
void get_binary_expr_string(BinaryOpType type, const BinaryOperands& operands, const InstructionContext& ctx, const std::string& output, std::string& expr_string) const;
void get_notation(BinaryOpType op_type, std::string& func_string, std::string& infix_string) const;
};
}
#endif
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