Use automatic allocation for sections

include/asm/output.hpp

@@ -12,7 +12,7 @@ struct Expression;
 struct FileStackNode;
 
 extern const char *objectName;
-extern std::deque<struct Section *> sectionList;
+extern std::deque<struct Section> sectionList;
 
 void out_RegisterNode(struct FileStackNode *node);
 void out_ReplaceNode(struct FileStackNode *node);

src/asm/output.cpp

@@ -46,7 +46,7 @@ struct Assertion {
 
 const char *objectName;
 
-std::deque<struct Section *> sectionList;
+std::deque<struct Section> sectionList;
 
 // List of symbols to put in the object file
 static std::vector<struct Symbol *> objectSymbols;
@@ -102,20 +102,18 @@ This is code intended to replace a node, which is pretty useless until ref count
 #endif
 }
 
-// Return a section's ID
-static uint32_t getsectid(struct Section const *sect)
+// Return a section's ID, or -1 if the section is not in the list
+static uint32_t getSectIDIfAny(struct Section *sect)
 {
-	auto search = std::find(RANGE(sectionList), sect);
+	if (!sect)
+		return (uint32_t)-1;
 
-	if (search == sectionList.end())
-		fatalerror("Unknown section '%s'\n", sect->name);
+	for (auto it = sectionList.begin(); it != sectionList.end(); it++) {
+		if (&*it == sect)
+			return it - sectionList.begin();
+	}
 
-	return search - sectionList.begin();
-}
-
-static uint32_t getSectIDIfAny(struct Section const *sect)
-{
-	return sect ? getsectid(sect) : (uint32_t)-1;
+	fatalerror("Unknown section '%s'\n", sect->name);
 }
 
 // Write a patch to a file
@@ -133,39 +131,39 @@ static void writepatch(struct Patch const *patch, FILE *f)
 }
 
 // Write a section to a file
-static void writesection(struct Section const *sect, FILE *f)
+static void writesection(struct Section const &sect, FILE *f)
 {
-	putstring(sect->name, f);
+	putstring(sect.name, f);
 
-	putlong(sect->size, f);
+	putlong(sect.size, f);
 
-	bool isUnion = sect->modifier == SECTION_UNION;
-	bool isFragment = sect->modifier == SECTION_FRAGMENT;
+	bool isUnion = sect.modifier == SECTION_UNION;
+	bool isFragment = sect.modifier == SECTION_FRAGMENT;
 
-	putc(sect->type | isUnion << 7 | isFragment << 6, f);
+	putc(sect.type | isUnion << 7 | isFragment << 6, f);
 
-	putlong(sect->org, f);
-	putlong(sect->bank, f);
-	putc(sect->align, f);
-	putlong(sect->alignOfs, f);
+	putlong(sect.org, f);
+	putlong(sect.bank, f);
+	putc(sect.align, f);
+	putlong(sect.alignOfs, f);
 
-	if (sect_HasData(sect->type)) {
-		fwrite(sect->data, 1, sect->size, f);
-		putlong(sect->patches->size(), f);
+	if (sect_HasData(sect.type)) {
+		fwrite(sect.data, 1, sect.size, f);
+		putlong(sect.patches->size(), f);
 
-		for (struct Patch const *patch : *sect->patches)
+		for (struct Patch const *patch : *sect.patches)
 			writepatch(patch, f);
 	}
 }
 
-static void freesection(struct Section const *sect)
+static void freesection(struct Section const &sect)
 {
-	if (sect_HasData(sect->type)) {
-		for (struct Patch *patch : *sect->patches) {
+	if (sect_HasData(sect.type)) {
+		for (struct Patch *patch : *sect.patches) {
 			free(patch->rpn);
 			free(patch);
 		}
-		delete sect->patches;
+		delete sect.patches;
 	}
 }
 
@@ -439,7 +437,7 @@ void out_WriteObject(void)
 	for (struct Symbol const *sym : objectSymbols)
 		writesymbol(sym, f);
 
-	for (struct Section *sect : sectionList) {
+	for (struct Section &sect : sectionList) {
 		writesection(sect, f);
 		freesection(sect);
 	}

src/asm/section.cpp

@@ -110,9 +110,9 @@ attr_(warn_unused_result) static bool reserveSpace(uint32_t delta_size)
 
 struct Section *sect_FindSectionByName(char const *name)
 {
-	for (struct Section *sect : sectionList) {
-		if (strcmp(name, sect->name) == 0)
-			return sect;
+	for (struct Section &sect : sectionList) {
+		if (strcmp(name, sect.name) == 0)
+			return §
 	}
 	return NULL;
 }
@@ -267,38 +267,36 @@ static struct Section *createSection(char const *name, enum SectionType type,
 				     uint32_t org, uint32_t bank, uint8_t alignment,
 				     uint16_t alignOffset, enum SectionModifier mod)
 {
-	struct Section *sect = (struct Section *)malloc(sizeof(*sect));
+	// Add the new section to the list (order doesn't matter)
+	struct Section &sect = sectionList.emplace_front();
 
-	if (sect == NULL)
-		fatalerror("Not enough memory for section: %s\n", strerror(errno));
-
-	sect->name = strdup(name);
-	if (sect->name == NULL)
+	sect.name = strdup(name);
+	if (sect.name == NULL)
 		fatalerror("Not enough memory for section name: %s\n", strerror(errno));
 
-	sect->type = type;
-	sect->modifier = mod;
-	sect->src = fstk_GetFileStack();
-	sect->fileLine = lexer_GetLineNo();
-	sect->size = 0;
-	sect->org = org;
-	sect->bank = bank;
-	sect->align = alignment;
-	sect->alignOfs = alignOffset;
-	sect->patches = new(std::nothrow) std::deque<struct Patch *>();
-	if (sect->patches == NULL)
+	sect.type = type;
+	sect.modifier = mod;
+	sect.src = fstk_GetFileStack();
+	sect.fileLine = lexer_GetLineNo();
+	sect.size = 0;
+	sect.org = org;
+	sect.bank = bank;
+	sect.align = alignment;
+	sect.alignOfs = alignOffset;
+	sect.patches = new(std::nothrow) std::deque<struct Patch *>();
+	if (sect.patches == NULL)
 		fatalerror("Not enough memory for section patches: %s\n", strerror(errno));
 
 	// It is only needed to allocate memory for ROM sections.
 	if (sect_HasData(type)) {
-		sect->data = (uint8_t *)malloc(sectionTypeInfo[type].size);
-		if (sect->data == NULL)
+		sect.data = (uint8_t *)malloc(sectionTypeInfo[type].size);
+		if (sect.data == NULL)
 			fatalerror("Not enough memory for section: %s\n", strerror(errno));
 	} else {
-		sect->data = NULL;
+		sect.data = NULL;
 	}
 
-	return sect;
+	return &sect;
 }
 
 // Find a section by name and type. If it doesn't exist, create it.
@@ -371,8 +369,6 @@ static struct Section *getSection(char const *name, enum SectionType type, uint3
 		mergeSections(sect, type, org, bank, alignment, alignOffset, mod);
 	} else {
 		sect = createSection(name, type, org, bank, alignment, alignOffset, mod);
-		// Add the new section to the list (order doesn't matter)
-		sectionList.push_front(sect);
 	}
 
 	return sect;