Initial gauntlet

.gitignore

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+.vscode
+output

makefile

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+# Set the project name here
+NAME = gauntlet
+
+OUTPUTDIR = output
+TOOLCHAIN_ARCH := v810
+TOOLCHAIN_DIR := $(HOME)/llvm-v810
+
+# The rest of the Makefile should not need changing ...
+BINDIR = $(TOOLCHAIN_DIR)/bin
+INCDIR = $(TOOLCHAIN_DIR)/include
+LIBDIR = $(TOOLCHAIN_DIR)/lib
+
+AS = $(BINDIR)/llvm-mc
+CC = $(BINDIR)/clang
+LD = $(BINDIR)/ld.lld
+OBJCOPY = $(BINDIR)/llvm-objcopy
+
+ASFLAGS += --triple v810-unknown-vb -mcpu=vb --filetype=obj -g
+LDFLAGS += -target v810-unknown-vb -mcpu=vb --ld-path=$(LD) -L$(LIBDIR) -Tvb.ld -nolibc -flto
+
+SFILES := $(foreach dir,./,$(notdir $(wildcard $(dir)/*.s)))
+
+SOBJS := $(OUTPUTDIR)/$(SFILES:.s=.o)
+
+OFILES := $(SOBJS)
+ELFFILES := $(OUTPUTDIR)/$(NAME).elf
+VBFILES := $(OUTPUTDIR)/$(NAME).vb
+
+.PHONY: all clean distclean
+
+all: $(VBFILES)
+
+$(VBFILES): $(ELFFILES)
+	@$(OBJCOPY) -S -O binary $< $@
+
+$(ELFFILES): $(OFILES)
+	@$(CC) $(OFILES) $(LDFLAGS) -o $@
+
+$(SOBJS): $(SFILES)
+	@$(AS) $(ASFLAGS) -o $@ $<
+
+clean: 
+#	@rm -f $(OFILES) $(VBFILES) $(ELFFILES)
+	@rm -f output/*
+
+distclean: clean

vb.ld

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+OUTPUT_FORMAT("elf32-v810", "elf32-v810", "elf32-v810")
+OUTPUT("a.elf") /* force elf format output */
+OUTPUT_ARCH(v810)
+TARGET(elf32-v810)
+ENTRY(start)
+SEARCH_DIR(.);
+
+MEMORY {
+	ram	(!r): ORIGIN = 0x05000000, LENGTH = 64k /*64k*/
+	rom	(rx): ORIGIN = 0x07000000, LENGTH = 16M
+}
+
+__text_vma = 0x07000000;
+__data_vma = 0x05000000;
+
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+  .text __text_vma : {
+    *(.text)
+    *(.text.*)
+    /* .gnu.warning sections are handled specially by elf32.em.  */
+    *(.gnu.warning)
+    *(.gnu.linkonce.t*)
+  } >rom = 0xFF
+
+  .rodata : {
+    *(.rodata)
+    *all.rodata*(*)
+    *(.roda)
+    *(.rodata.*)
+    *(.gnu.linkonce.r*)
+    /* SORT(CONSTRUCTORS) */
+  } >rom = 0xFF
+
+  /* C++ Constructor/Destructor table */
+  /*
+  .ctors : {
+    ___ctors = .;
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*crtend(.ctors))
+    ___ctors_end = .;
+  } >rom = 0xFF
+
+  .dtors : {
+    ___dtors = .;
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*crtend.o(.dtors))
+    ___dtors_end = .;
+  } >rom = 0xFF
+  */
+
+  /* Stop empty section from causing a compiler error */
+  /DISCARD/ : {
+    *(.comment)
+  } 
+
+  /* Place orphan ROM data here */
+  /* . = .; */
+  
+  /* Ram memory */
+
+  __data_lma = .;
+  .data __data_vma : AT(__data_lma) {
+    *(.data)
+    *(.data.*)
+    *(.sdata)
+    *(.sdata.*)
+    *(.gnu.linkonce.d*)
+    /* CONSTRUCTORS */
+  } >ram = 0xFF
+
+  __data_end = .;
+
+  .bss : {
+    *(.dynbss)
+    *(.bss)
+    *(.sdata)
+    *(.sbss)
+    *(COMMON)
+  } >ram = 0xFF
+  /* These must appear regardless of  .  */
+
+
+  /* Compute the vector address */
+  /* Prevent overlaps with vbvectors */
+  __sections_size = SIZEOF(.text) + SIZEOF(.rodata) + SIZEOF(.data);
+  __rom_size = 1 << LOG2CEIL(__sections_size + 0x220);
+  __rom_end = ORIGIN(rom) + __rom_size;
+
+  /* Place interupt and reset vector at end of rom */
+
+  .vbvectors 0x07FFFDE0 : AT(__rom_end - 0x220) {
+    KEEP (*(.vbvectors))
+  } >rom = 0xFF 
+}