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Add a mechanism to provide original section indices for jump table regeneration (#130)

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Wiseguy 2025-02-11 22:36:33 -05:00 • committed by GitHub
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commit 8781eb44ac
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2 changed files with 10 additions and 1 deletions
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8
LiveRecomp/live_generator.cpp
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@ -1563,8 +1563,14 @@ void N64Recomp::LiveGenerator::emit_switch(const Context& recompiler_context, co
// Get the relocated address of the jump table.
uint32_t section_offset = jtbl.vram - jtbl_section.ram_addr;
// Get the section index to use for relocation at runtime.
uint16_t reloc_section_index = jtbl.section_index;
if (!inputs.original_section_indices.empty()) {
reloc_section_index = inputs.original_section_indices[reloc_section_index];
}
// Populate the necessary fields of the dummy context and load the relocated address into temp2.
dummy_context.reloc_section_index = jtbl.section_index;
dummy_context.reloc_section_index = reloc_section_index;
dummy_context.reloc_target_section_offset = section_offset;
load_relocated_address(dummy_context, Registers::arithmetic_temp2);

3
include/recompiler/live_recompiler.h
View file

@ -83,6 +83,9 @@ namespace N64Recomp {
std::unordered_map<size_t, size_t> entry_func_hooks;
// Maps function index in recompiler context to function's return hook slot.
std::unordered_map<size_t, size_t> return_func_hooks;
// Maps section index in the generated code to original section index. Used by regenerated
// code to relocate using the corresponding original section's address.
std::vector<size_t> original_section_indices;
};
class LiveGenerator final : public Generator {
public: