4 files changed, 223 insertions, 0 deletions
diff --git a/VexRiscvSocSoftware/resources/crt.S b/VexRiscvSocSoftware/resources/crt.S
new file mode 100755
index 0000000..0a98a6e
--- /dev/null
+++ b/VexRiscvSocSoftware/resources/crt.S
@@ -0,0 +1,97 @@
+.global crtStart
+.global main
+.global irqCallback
+
+crtStart:
+  j crtInit
+  nop
+  nop
+  nop
+  nop
+  nop
+  nop
+  nop
+
+.global  trap_entry
+trap_entry:
+  sw x1,  - 1*4(sp)
+  sw x5,  - 2*4(sp)
+  sw x6,  - 3*4(sp)
+  sw x7,  - 4*4(sp)
+  sw x10, - 5*4(sp)
+  sw x11, - 6*4(sp)
+  sw x12, - 7*4(sp)
+  sw x13, - 8*4(sp)
+  sw x14, - 9*4(sp)
+  sw x15, -10*4(sp)
+  sw x16, -11*4(sp)
+  sw x17, -12*4(sp)
+  sw x28, -13*4(sp)
+  sw x29, -14*4(sp)
+  sw x30, -15*4(sp)
+  sw x31, -16*4(sp)
+  addi sp,sp,-16*4
+  call irqCallback
+  lw x1 , 15*4(sp)
+  lw x5,  14*4(sp)
+  lw x6,  13*4(sp)
+  lw x7,  12*4(sp)
+  lw x10, 11*4(sp)
+  lw x11, 10*4(sp)
+  lw x12,  9*4(sp)
+  lw x13,  8*4(sp)
+  lw x14,  7*4(sp)
+  lw x15,  6*4(sp)
+  lw x16,  5*4(sp)
+  lw x17,  4*4(sp)
+  lw x28,  3*4(sp)
+  lw x29,  2*4(sp)
+  lw x30,  1*4(sp)
+  lw x31,  0*4(sp)
+  addi sp,sp,16*4
+  mret
+  .text
+
+
+crtInit:
+  .option push
+  .option norelax
+  la gp, __global_pointer$
+  .option pop
+  la sp, _stack_start
+
+bss_init:
+  la a0, _bss_start
+  la a1, _bss_end
+bss_loop:
+  beq a0,a1,bss_done
+  sw zero,0(a0)
+  add a0,a0,4
+  j bss_loop
+bss_done:
+
+ctors_init:
+  la a0, _ctors_start
+  addi sp,sp,-4
+ctors_loop:
+  la a1, _ctors_end
+  beq a0,a1,ctors_done
+  lw a3,0(a0)
+  add a0,a0,4
+  sw a0,0(sp)
+  jalr  a3
+  lw a0,0(sp)
+  j ctors_loop
+ctors_done:
+  addi sp,sp,4
+
+
+  li a0, 0x880     //880 enable timer + external interrupts
+  csrw mie,a0
+  li a0, 0x1808     //1808 enable interrupts
+  csrw mstatus,a0
+
+  call main
+infinitLoop:
+  j infinitLoop
+
diff --git a/VexRiscvSocSoftware/resources/gcc.mk b/VexRiscvSocSoftware/resources/gcc.mk
new file mode 100644
index 0000000..597f0ba
--- /dev/null
+++ b/VexRiscvSocSoftware/resources/gcc.mk
@@ -0,0 +1,26 @@
+# Set it to yes if you are using the sifive precompiled GCC pack
+SIFIVE_GCC_PACK ?= yes
+
+ifeq ($(SIFIVE_GCC_PACK),yes)
+	RISCV_NAME ?= riscv64-unknown-elf
+	RISCV_PATH ?= /opt/riscv/
+else
+	RISCV_NAME ?= riscv32-unknown-elf
+	ifeq ($(MULDIV),yes)
+		RISCV_PATH ?= /opt/riscv32im/
+	else
+		RISCV_PATH ?= /opt/riscv32i/
+	endif
+endif
+
+MABI=ilp32
+MARCH := rv32i
+ifeq ($(MULDIV),yes)
+	MARCH := $(MARCH)m
+endif
+ifeq ($(COMPRESSED),yes)
+	MARCH := $(MARCH)ac
+endif
+
+CFLAGS += -march=$(MARCH)  -mabi=$(MABI)
+LDFLAGS += -march=$(MARCH)  -mabi=$(MABI)
diff --git a/VexRiscvSocSoftware/resources/recursive.mk b/VexRiscvSocSoftware/resources/recursive.mk
new file mode 100644
index 0000000..0be9991
--- /dev/null
+++ b/VexRiscvSocSoftware/resources/recursive.mk
@@ -0,0 +1,13 @@
+SUBDIRS := $(wildcard */.)
+
+all:
+	for dir in $(SUBDIRS); do \
+		(cd $$dir; ${MAKE} all); \
+	done
+
+clean:
+	for dir in $(SUBDIRS); do \
+		(cd $$dir; ${MAKE} clean); \
+	done
+
+.PHONY: all $(SUBDIRS)
+\ No newline at end of file
diff --git a/VexRiscvSocSoftware/resources/subproject.mk b/VexRiscvSocSoftware/resources/subproject.mk
new file mode 100755
index 0000000..3aba0d6
--- /dev/null
+++ b/VexRiscvSocSoftware/resources/subproject.mk
@@ -0,0 +1,87 @@
+
+
+ifeq ($(DEBUG),yes)
+	CFLAGS += -g3 -O0 
+endif
+
+ifeq ($(DEBUG),no)
+	CFLAGS += -g -O3 
+endif
+
+ifeq ($(BENCH),yes)
+	CFLAGS += -fno-inline  
+endif
+
+ifeq ($(SIFIVE_GCC_PACK),yes)
+	RISCV_CLIB=$(RISCV_PATH)/$(RISCV_NAME)/lib/$(MARCH)/$(MABI)/
+else
+	RISCV_CLIB=$(RISCV_PATH)/$(RISCV_NAME)/lib/
+endif
+
+
+
+
+
+RISCV_OBJCOPY = $(RISCV_PATH)/bin/$(RISCV_NAME)-objcopy
+RISCV_OBJDUMP = $(RISCV_PATH)/bin/$(RISCV_NAME)-objdump
+RISCV_CC=$(RISCV_PATH)/bin/$(RISCV_NAME)-gcc
+
+CFLAGS +=  -MD -fstrict-volatile-bitfields 
+LDFLAGS +=  -nostdlib -lgcc -mcmodel=medany -nostartfiles -ffreestanding -Wl,-Bstatic,-T,$(LDSCRIPT),-Map,$(OBJDIR)/$(PROJ_NAME).map,--print-memory-usage
+#LDFLAGS += -lgcc -lc -lg -nostdlib  -lgcc  -msave-restore    --strip-debug, 
+
+OBJDIR = build
+OBJS := $(SRCS)
+OBJS := $(OBJS:.c=.o)
+OBJS := $(OBJS:.cpp=.o)
+OBJS := $(OBJS:.S=.o)
+OBJS := $(OBJS:..=miaou)
+OBJS := $(addprefix $(OBJDIR)/,$(OBJS))
+
+
+all: $(OBJDIR)/$(PROJ_NAME).elf $(OBJDIR)/$(PROJ_NAME).hex $(OBJDIR)/$(PROJ_NAME).asm $(OBJDIR)/$(PROJ_NAME).v
+
+$(OBJDIR)/%.elf: $(OBJS) | $(OBJDIR)
+	$(RISCV_CC) $(CFLAGS) -o $@ $^ $(LDFLAGS) $(LIBS)
+
+%.hex: %.elf
+	$(RISCV_OBJCOPY) -O ihex $^ $@
+
+%.bin: %.elf
+	$(RISCV_OBJCOPY) -O binary $^ $@
+	
+%.v: %.elf
+	$(RISCV_OBJCOPY) -O verilog $^ $@
+	
+	
+	
+%.asm: %.elf
+	$(RISCV_OBJDUMP) -S -d $^ > $@
+
+$(OBJDIR)/%.o: %.c
+	mkdir -p $(dir $@)
+	$(RISCV_CC) -c $(CFLAGS)  $(INC) -o $@ $^
+	
+$(OBJDIR)/%.o: %.cpp
+	mkdir -p $(dir $@)
+	$(RISCV_CC) -c $(CFLAGS)  $(INC) -o $@ $^	
+
+$(OBJDIR)/%.o: %.S
+	mkdir -p $(dir $@)
+	$(RISCV_CC) -c $(CFLAGS) -o $@ $^ -D__ASSEMBLY__=1
+
+$(OBJDIR):
+	mkdir -p $@
+
+clean:
+	rm -f $(OBJDIR)/$(PROJ_NAME).elf
+	rm -f $(OBJDIR)/$(PROJ_NAME).hex
+	rm -f $(OBJDIR)/$(PROJ_NAME).map
+	rm -f $(OBJDIR)/$(PROJ_NAME).v
+	rm -f $(OBJDIR)/$(PROJ_NAME).asm
+	find $(OBJDIR) -type f -name '*.o' -print0 | xargs -0 -r rm
+
+.SECONDARY: $(OBJS)
+
+
+