gbdev/rgbds
1
0
Fork 0
mirror of https://github.com/gbdev/rgbds.git synced 2025-11-22 19:22:05 +00:00
Code Issues Packages Projects Releases Wiki Activity

Make writing patches not affect the expression

Browse Source 
This also removes one int member from the struct that shouldn't be there
This commit is contained in:
ISSOtm
2020-02-23 22:27:33 +01:00
parent ef2bfe4ea0
commit cfe21876e5
4 changed files with 14 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
src/asm/output.c
View File

@@ -310,10 +310,9 @@ struct Patch *allocpatch(void)
/*
* Create a new patch (includes the rpn expr)
*/
void out_CreatePatch(uint32_t type, struct Expression *expr)
void out_CreatePatch(uint32_t type, struct Expression const *expr)
{
struct Patch *pPatch;
uint16_t rpndata;
uint8_t *rpnexpr;
char tzSym[512];
uint32_t rpnptr = 0, symptr;
@@ -328,19 +327,22 @@ void out_CreatePatch(uint32_t type, struct Expression *expr)
fstk_DumpToStr(pPatch->tzFilename, sizeof(pPatch->tzFilename));
pPatch->nOffset = pCurrentSection->nPC;
while ((rpndata = rpn_PopByte(expr)) != 0xDEAD) {
for (size_t offset = 0; offset < expr->nRPNLength; ) {
#define popbyte(expr) (expr)->tRPN[offset++]
uint8_t rpndata = popbyte(expr);
switch (rpndata) {
case RPN_CONST:
rpnexpr[rpnptr++] = RPN_CONST;
rpnexpr[rpnptr++] = rpn_PopByte(expr);
rpnexpr[rpnptr++] = rpn_PopByte(expr);
rpnexpr[rpnptr++] = rpn_PopByte(expr);
rpnexpr[rpnptr++] = rpn_PopByte(expr);
rpnexpr[rpnptr++] = popbyte(expr);
rpnexpr[rpnptr++] = popbyte(expr);
rpnexpr[rpnptr++] = popbyte(expr);
rpnexpr[rpnptr++] = popbyte(expr);
break;
case RPN_SYM:
{
symptr = 0;
while ((tzSym[symptr++] = rpn_PopByte(expr)) != 0)
while ((tzSym[symptr++] = popbyte(expr)) != 0)
;
struct sSymbol const *sym = sym_FindSymbol(tzSym);
@@ -371,7 +373,7 @@ void out_CreatePatch(uint32_t type, struct Expression *expr)
struct sSymbol *sym;
symptr = 0;
while ((tzSym[symptr++] = rpn_PopByte(expr)) != 0)
while ((tzSym[symptr++] = popbyte(expr)) != 0)
;
sym = sym_FindSymbol(tzSym);
@@ -393,7 +395,7 @@ void out_CreatePatch(uint32_t type, struct Expression *expr)
rpnexpr[rpnptr++] = RPN_BANK_SECT;
do {
b = rpn_PopByte(expr);
b = popbyte(expr);
rpnexpr[rpnptr++] = b & 0xFF;
} while (b != 0);
break;
@@ -402,6 +404,7 @@ void out_CreatePatch(uint32_t type, struct Expression *expr)
rpnexpr[rpnptr++] = rpndata;
break;
}
#undef popbyte
}
assert(rpnptr == expr->nRPNPatchSize);

12
src/asm/rpn.c
View File

@@ -81,7 +81,6 @@ void rpn_Init(struct Expression *expr)
expr->nRPNCapacity = 0;
expr->nRPNLength = 0;
expr->nRPNPatchSize = 0;
expr->nRPNOut = 0;
}
/*
@@ -94,17 +93,6 @@ void rpn_Free(struct Expression *expr)
rpn_Init(expr);
}
/*
* Returns the next rpn byte in expression
*/
uint16_t rpn_PopByte(struct Expression *expr)
{
if (expr->nRPNOut == expr->nRPNLength)
return 0xDEAD;
return expr->tRPN[expr->nRPNOut++];
}
/*
* Determine if the current expression is known at assembly time
*/