Build everything as C++ (#1176)

include/linkdefs.hpp

@@ -0,0 +1,146 @@
+/* SPDX-License-Identifier: MIT */
+
+#ifndef RGBDS_LINKDEFS_H
+#define RGBDS_LINKDEFS_H
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+#define RGBDS_OBJECT_VERSION_STRING "RGB9"
+#define RGBDS_OBJECT_REV 9U
+
+enum AssertionType {
+	ASSERT_WARN,
+	ASSERT_ERROR,
+	ASSERT_FATAL
+};
+
+enum RPNCommand {
+	RPN_ADD			= 0x00,
+	RPN_SUB			= 0x01,
+	RPN_MUL			= 0x02,
+	RPN_DIV			= 0x03,
+	RPN_MOD			= 0x04,
+	RPN_UNSUB		= 0x05, // FIXME: should be renamed to "NEG" for consistency
+	RPN_EXP			= 0x06,
+
+	RPN_OR			= 0x10,
+	RPN_AND			= 0x11,
+	RPN_XOR			= 0x12,
+	RPN_UNNOT		= 0x13, // FIXME: should be renamed to "NOT" for consistency
+
+	RPN_LOGAND		= 0x21,
+	RPN_LOGOR		= 0x22,
+	RPN_LOGUNNOT		= 0x23, // FIXME: should be renamed to "LOGNOT" for consistency
+
+	RPN_LOGEQ		= 0x30,
+	RPN_LOGNE		= 0x31,
+	RPN_LOGGT		= 0x32,
+	RPN_LOGLT		= 0x33,
+	RPN_LOGGE		= 0x34,
+	RPN_LOGLE		= 0x35,
+
+	RPN_SHL			= 0x40,
+	RPN_SHR			= 0x41,
+	RPN_USHR		= 0x42,
+
+	RPN_BANK_SYM		= 0x50,
+	RPN_BANK_SECT		= 0x51,
+	RPN_BANK_SELF		= 0x52,
+	RPN_SIZEOF_SECT		= 0x53,
+	RPN_STARTOF_SECT	= 0x54,
+	RPN_SIZEOF_SECTTYPE     = 0x55,
+	RPN_STARTOF_SECTTYPE    = 0x56,
+
+	RPN_HRAM		= 0x60,
+	RPN_RST			= 0x61,
+
+	RPN_CONST		= 0x80,
+	RPN_SYM			= 0x81
+};
+
+enum SectionType {
+	SECTTYPE_WRAM0,
+	SECTTYPE_VRAM,
+	SECTTYPE_ROMX,
+	SECTTYPE_ROM0,
+	SECTTYPE_HRAM,
+	SECTTYPE_WRAMX,
+	SECTTYPE_SRAM,
+	SECTTYPE_OAM,
+
+	// In RGBLINK, this is used for "indeterminate" sections; this is primarily for SDCC
+	// areas, which do not carry any section type info and must be told from the linker script
+	SECTTYPE_INVALID
+};
+
+enum FileStackNodeType {
+	NODE_REPT,
+	NODE_FILE,
+	NODE_MACRO,
+};
+
+// Nont-`const` members may be patched in RGBLINK depending on CLI flags
+extern struct SectionTypeInfo {
+	char const *const name;
+	uint16_t const startAddr;
+	uint16_t size;
+	uint32_t const firstBank;
+	uint32_t lastBank;
+} sectionTypeInfo[SECTTYPE_INVALID];
+
+/*
+ * Tells whether a section has data in its object file definition,
+ * depending on type.
+ * @param type The section's type
+ * @return `true` if the section's definition includes data
+ */
+static inline bool sect_HasData(enum SectionType type)
+{
+	assert(type != SECTTYPE_INVALID);
+	return type == SECTTYPE_ROM0 || type == SECTTYPE_ROMX;
+}
+
+/*
+ * Computes a memory region's end address (last byte), eg. 0x7FFF
+ * @return The address of the last byte in that memory region
+ */
+static inline uint16_t endaddr(enum SectionType type)
+{
+	return sectionTypeInfo[type].startAddr + sectionTypeInfo[type].size - 1;
+}
+
+/*
+ * Computes a memory region's number of banks
+ * @return The number of banks, 1 for regions without banking
+ */
+static inline uint32_t nbbanks(enum SectionType type)
+{
+	return sectionTypeInfo[type].lastBank - sectionTypeInfo[type].firstBank + 1;
+}
+
+enum SectionModifier {
+	SECTION_NORMAL,
+	SECTION_UNION,
+	SECTION_FRAGMENT
+};
+
+extern char const * const sectionModNames[];
+
+enum ExportLevel {
+	SYMTYPE_LOCAL,
+	SYMTYPE_IMPORT,
+	SYMTYPE_EXPORT
+};
+
+enum PatchType {
+	PATCHTYPE_BYTE,
+	PATCHTYPE_WORD,
+	PATCHTYPE_LONG,
+	PATCHTYPE_JR,
+
+	PATCHTYPE_INVALID
+};
+
+#endif // RGBDS_LINKDEFS_H