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PUSHS and POPS also affect the symbol scope

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Now, when POPS is executed, it restores the symbol scope of the
corresponding PUSHS. That way, the local symbols previously available
can be used again after the POPS.

This is useful in cases like this one:

```
    SECTION "Section 1", ROMX

BigFunction:

    ...

.loop:

    ...

    PUSHS

    SECTION "Section 2", ROMX

DataForBigFunction:
    DB 1, 2, 3, 4, 5

    POPS

    ld  a,BANK(DataForBigFunction)
    ld  hl,DataForBigFunction

    ...

    jr  .loop
```

Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
This commit is contained in:
Antonio Niño Díaz
2018-01-07 23:05:04 +00:00
parent f5164325d2
commit de32e245c9
3 changed files with 18 additions and 1 deletions
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4
include/asm/symbol.h
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@@ -80,4 +80,8 @@ void sym_Purge(char *tzName);
uint32_t sym_isConstDefined(char *tzName);
int32_t sym_IsRelocDiffDefined(char *tzSym1, char *tzSym2);
/* Functions to save and restore the current symbol scope. */
struct sSymbol *sym_GetCurrentSymbolScope(void);
void sym_SetCurrentSymbolScope(struct sSymbol *pNewScope);
#endif /* RGBDS_SYMBOL_H */