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Use a vector of RPN values (#1820)

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This is instead of byte-encoding them in a different way than the actual object output's RPN buffer
This commit is contained in:
Rangi
2025-09-03 14:42:37 -04:00
committed by GitHub
parent ee1db0a582
commit 590d113e94
3 changed files with 74 additions and 168 deletions
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14
include/asm/rpn.hpp
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@@ -12,15 +12,18 @@
struct Symbol;
struct RPNValue {
RPNCommand command;
std::variant<std::monostate, uint8_t, uint32_t, std::string> data;
};
struct Expression {
std::variant<
int32_t, // If the expression's value is known, it's here
std::string // Why the expression is not known, if it isn't
>
data = 0;
bool isSymbol = false; // Whether the expression represents a symbol suitable for const diffing
std::vector<uint8_t> rpn{}; // Bytes serializing the RPN expression
uint32_t rpnPatchSize = 0; // Size the expression will take in the object file
std::vector<RPNValue> rpn{}; // Values to be serialized into the RPN expression
bool isKnown() const { return std::holds_alternative<int32_t>(data); }
int32_t value() const { return std::get<int32_t>(data); }
@@ -45,11 +48,6 @@ struct Expression {
void makeCheckBitIndex(uint8_t mask);
void checkNBit(uint8_t n) const;
private:
void clear();
uint8_t *reserveSpace(uint32_t size);
uint8_t *reserveSpace(uint32_t size, uint32_t patchSize);
};
bool checkNBit(int32_t v, uint8_t n, char const *name);