support data loading in ILRAM, XRAM and YRAM

This change adds support for three sections .ilram, .xram and .yram,
along with three macros GILRAM, GXRAM and GYRAM, that can be used to
statically load data to on-chip memory.

fx9860g.ld

@@ -22,6 +22,11 @@ MEMORY
 	vbr   (rwx):  o = 0x8800e000, l = 5k
 	/* Some RAM region from P1 area; gint's data will reside here */
 	rram  (rwx):  o = 0x8800f400, l = 3k
+	/* On-chip IL memory */
+	ilram (rwx):  o = 0xe5200000, l = 4k
+	/* On-chip X and Y memory */
+	xram  (rwx):  o = 0xe5007000, l = 8k
+	yram  (rwx):  o = 0xe5017000, l = 8k
 }
 
 SECTIONS
@@ -94,6 +99,9 @@ SECTIONS
 	   - Resources or assets from fxconv or similar converters
 	   - Data marked read-only by the compiler (.rodata and .rodata.*) */
 	.rodata : SUBALIGN(4) {
+		/* Put these first, they need to be 4-aligned */
+		*(.rodata.4)
+
 		*(.rodata .rodata.*)
 	} > rom
 
@@ -142,6 +150,42 @@ SECTIONS
 
 	_sdata = SIZEOF(.data) + SIZEOF(.data.4);
 
+	/* On-chip memory sections: IL, X and Y memory */
+
+	. = ORIGIN(ilram);
+	.ilram ALIGN(4) : ALIGN(4) {
+		_lilram = LOADADDR(.ilram);
+		_rilram = . ;
+
+		*(.ilram)
+
+		. = ALIGN(16);
+	} > ilram AT> rom
+
+	. = ORIGIN(xram);
+	.xram ALIGN(4) : ALIGN(4) {
+		_lxram = LOADADDR(.xram);
+		_rxram = . ;
+
+		*(.xram)
+
+		. = ALIGN(16);
+	} > xram AT> rom
+
+	. = ORIGIN(yram);
+	.yram ALIGN(4) : ALIGN(4) {
+		_lyram = LOADADDR(.yram);
+		_ryram = . ;
+
+		*(.yram)
+
+		. = ALIGN(16);
+	} > yram AT> rom
+
+	_silram = SIZEOF(.ilram);
+	_sxram  = SIZEOF(.xram);
+	_syram  = SIZEOF(.yram);
+
 
 
 	/*

fxcg50.ld

@@ -21,6 +21,11 @@ MEMORY
 	vbr   (rwx):  o = 0x8c160000, l = 5k
 	/* Some RAM region from P1 area; gint's data will reside here */
 	rram  (rwx):  o = 0x8c161400, l = 3k
+	/* On-chip IL memory */
+	ilram (rwx):  o = 0xe5200000, l = 4k
+	/* On-chip X and Y memory */
+	xram  (rwx):  o = 0xe5007000, l = 8k
+	yram  (rwx):  o = 0xe5017000, l = 8k
 }
 
 SECTIONS
@@ -87,7 +92,7 @@ SECTIONS
 	   - Data marked read-only by the compiler (.rodata and .rodata.*) */
 	.rodata : SUBALIGN(4) {
 		/* Put these first, they need to be 4-aligned */
-		*(.rodata.assets)
+		*(.rodata.4)
 
 		*(.rodata .rodata.*)
 	} > rom
@@ -130,6 +135,42 @@ SECTIONS
 
 	_sdata = SIZEOF(.data) + SIZEOF(.data.4);
 
+	/* On-chip memory sections: IL, X and Y memory */
+
+	. = ORIGIN(ilram);
+	.ilram ALIGN(4) : ALIGN(4) {
+		_lilram = LOADADDR(.ilram);
+		_rilram = . ;
+
+		*(.ilram)
+
+		. = ALIGN(16);
+	} > ilram AT> rom
+
+	. = ORIGIN(xram);
+	.xram ALIGN(4) : ALIGN(4) {
+		_lxram = LOADADDR(.xram);
+		_rxram = . ;
+
+		*(.xram)
+
+		. = ALIGN(16);
+	} > xram AT> rom
+
+	. = ORIGIN(yram);
+	.yram ALIGN(4) : ALIGN(4) {
+		_lyram = LOADADDR(.yram);
+		_ryram = . ;
+
+		*(.yram)
+
+		. = ALIGN(16);
+	} > yram AT> rom
+
+	_silram = SIZEOF(.ilram);
+	_sxram  = SIZEOF(.xram);
+	_syram  = SIZEOF(.yram);
+
 
 
 	/*

include/gint/defs/attributes.h

@@ -13,6 +13,10 @@
 /* Additional sections that are only needed on SH3 */
 #define GDATA3		__attribute__((section(".gint.data.sh3")))
 #define GBSS3		__attribute__((section(".gint.bss.sh3")))
+/* Objects for the ILRAM, XRAM and YRAM regions */
+#define GILRAM		__attribute__((section(".ilram")))
+#define GXRAM		__attribute__((section(".xram")))
+#define GYRAM		__attribute__((section(".yram")))
 
 /* Unused parameters or variables */
 #define GUNUSED		__attribute__((unused))

src/core/start.c

@@ -20,6 +20,9 @@ extern uint32_t
 	brom, srom,			/* Limits of ROM mappings */
 	lgdata, sgdata, rgdata,		/* gint's data section */
 	ldata,  sdata,  rdata,		/* User's data section */
+	lilram, silram, rilram,		/* IL memory section */
+	lxram,  sxram,  rxram,		/* X memory section */
+	lyram,  syram,  ryram,		/* Y memory section */
 	sbss, rbss,			/* User's BSS section */
 	btors, mtors, etors;		/* Constructor/destructor arrays */
 extern gint_driver_t
@@ -121,6 +124,9 @@ int start(int isappli, int optnum)
 	   first for static and global variables to be initialized */
 	regcpy(lgdata, sgdata, rgdata);
 	regcpy(ldata,  sdata,  rdata);
+	regcpy(lilram, silram, rilram);
+	regcpy(lxram,  sxram,  rxram);
+	regcpy(lyram,  syram,  ryram);
 	regclr(rbss, sbss);
 	bootlog_loaded();