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Implement unionized sections in RGBASM

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This touched a lot more code than initially expected, for two reasons.

First, this broke a big RGBASM assumption: that sections are always being
written to at their end. This plus other problems required touching
basically the entirety of `section.c`.

Second, I tried different solutions to solve the above problem, and along
the way I cleaned up many things around. (I believe that keeping this to
"cleanup" commits yields subpar results, and since it's boring they get
postponed anyways.)

RGBLINK support still needs to be added, but this will come next.
This commit is contained in:
ISSOtm
2020-03-20 21:02:32 +01:00
parent 46a402f7d7
commit cb52ae0f26
13 changed files with 314 additions and 162 deletions
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7
include/asm/symbol.h
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@@ -13,6 +13,8 @@
#include <stdint.h>
#include <string.h>
#include "asm/section.h"
#include "types.h"
#define HASHSIZE (1 << 16)
@@ -30,7 +32,6 @@ enum SymbolType {
struct sSymbol {
char tzName[MAXSYMLEN + 1];
enum SymbolType type;
bool isConstant; /* Whether the symbol's value is currently known */
bool isExported; /* Whether the symbol is to be exported */
bool isBuiltin; /* Whether the symbol is a built-in */
bool isReferenced; /* Whether the symbol is referenced in a RPN expr */
@@ -52,7 +53,9 @@ static inline bool sym_IsDefined(struct sSymbol const *sym)
static inline bool sym_IsConstant(struct sSymbol const *sym)
{
return sym->isConstant;
return sym->type == SYM_EQU || sym->type == SYM_SET
|| (sym->type == SYM_LABEL && sym->pSection
&& sym->pSection->nOrg != -1);
}
static inline bool sym_IsNumeric(struct sSymbol const *sym)