diff options
Diffstat (limited to 'VexRiscv/src/main/c/common')
| -rwxr-xr-x | VexRiscv/src/main/c/common/ram.ld | 151 | ||||
| -rw-r--r-- | VexRiscv/src/main/c/common/riscv64-unknown-elf.mk | 16 | ||||
| -rw-r--r-- | VexRiscv/src/main/c/common/standalone.mk | 74 |
3 files changed, 241 insertions, 0 deletions
diff --git a/VexRiscv/src/main/c/common/ram.ld b/VexRiscv/src/main/c/common/ram.ld new file mode 100755 index 0000000..2ebf858 --- /dev/null +++ b/VexRiscv/src/main/c/common/ram.ld @@ -0,0 +1,151 @@ +OUTPUT_ARCH( "riscv" ) + +ENTRY( _start ) + +MEMORY +{ + ram : ORIGIN = DEFINED(__ram_origin) ? __ram_origin : 0x80000000, LENGTH = 64k +} + + +SECTIONS +{ + __stack_size = DEFINED(__stack_size) ? __stack_size : 2K; + + .init : + { + KEEP (*(SORT_NONE(.init))) + }> ram + + .text : + { + *(.text.unlikely .text.unlikely.*) + *(.text.startup .text.startup.*) + *(.text .text.*) + *(.gnu.linkonce.t.*) + *(.note.gnu.build-id) + } > ram + + .fini : + { + KEEP (*(SORT_NONE(.fini))) + } > ram + + PROVIDE (__etext = .); + PROVIDE (_etext = .); + PROVIDE (etext = .); + + . = ALIGN(4); + + .preinit_array : + { + PROVIDE_HIDDEN (__preinit_array_start = .); + KEEP (*(.preinit_array)) + PROVIDE_HIDDEN (__preinit_array_end = .); + } > ram + + .init_array : + { + PROVIDE_HIDDEN (__init_array_start = .); + KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*))) + KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors)) + PROVIDE_HIDDEN (__init_array_end = .); + } > ram + + .fini_array : + { + PROVIDE_HIDDEN (__fini_array_start = .); + KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*))) + KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors)) + PROVIDE_HIDDEN (__fini_array_end = .); + } > ram + + .ctors : + { + /* gcc uses crtbegin.o to find the start of + the constructors, so we make sure it is + first. Because this is a wildcard, it + doesn't matter if the user does not + actually link against crtbegin.o; the + linker won't look for a file to match a + wildcard. The wildcard also means that it + doesn't matter which directory crtbegin.o + is in. */ + KEEP (*crtbegin.o(.ctors)) + KEEP (*crtbegin?.o(.ctors)) + /* We don't want to include the .ctor section from + the crtend.o file until after the sorted ctors. + The .ctor section from the crtend file contains the + end of ctors marker and it must be last */ + KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors)) + KEEP (*(SORT(.ctors.*))) + KEEP (*(.ctors)) + } > ram + + .dtors : + { + KEEP (*crtbegin.o(.dtors)) + KEEP (*crtbegin?.o(.dtors)) + KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors)) + KEEP (*(SORT(.dtors.*))) + KEEP (*(.dtors)) + } > ram + + .lalign : + { + . = ALIGN(4); + PROVIDE( _data_lma = . ); + } > ram + + .dalign : + { + . = ALIGN(4); + PROVIDE( _data = . ); + } > ram + + .data : + { + *(.rdata) + *(.rodata .rodata.*) + *(.gnu.linkonce.r.*) + *(.data .data.*) + *(.gnu.linkonce.d.*) + . = ALIGN(8); + PROVIDE( __global_pointer$ = . + 0x800 ); + *(.sdata .sdata.*) + *(.gnu.linkonce.s.*) + . = ALIGN(8); + *(.srodata.cst16) + *(.srodata.cst8) + *(.srodata.cst4) + *(.srodata.cst2) + *(.srodata .srodata.*) + } >ram + + . = ALIGN(4); + PROVIDE( _edata = . ); + PROVIDE( edata = . ); + + PROVIDE( _fbss = . ); + PROVIDE( __bss_start = . ); + .bss : + { + *(.sbss*) + *(.gnu.linkonce.sb.*) + *(.bss .bss.*) + *(.gnu.linkonce.b.*) + *(COMMON) + . = ALIGN(4); + } >ram + + . = ALIGN(8); + PROVIDE( _end = . ); + PROVIDE( end = . ); + + .stack : + { + PROVIDE( _heap_end = . ); + . = __stack_size; + PROVIDE( _sp = . ); + } > ram +} diff --git a/VexRiscv/src/main/c/common/riscv64-unknown-elf.mk b/VexRiscv/src/main/c/common/riscv64-unknown-elf.mk new file mode 100644 index 0000000..e17a9d1 --- /dev/null +++ b/VexRiscv/src/main/c/common/riscv64-unknown-elf.mk @@ -0,0 +1,16 @@ +RISCV_BIN ?= riscv64-unknown-elf- +RISCV_CC=${RISCV_BIN}gcc +RISCV_OBJCOPY=${RISCV_BIN}objcopy +RISCV_OBJDUMP=${RISCV_BIN}objdump + +MARCH := rv32i +ifeq ($(MULDIV),yes) + MARCH := $(MARCH)M +endif +ifeq ($(COMPRESSED),yes) + MARCH := $(MARCH)AC +endif + +CFLAGS += -march=$(MARCH) -mabi=ilp32 -DUSE_GP +LDFLAGS += -march=$(MARCH) -mabi=ilp32 + diff --git a/VexRiscv/src/main/c/common/standalone.mk b/VexRiscv/src/main/c/common/standalone.mk new file mode 100644 index 0000000..88328a2 --- /dev/null +++ b/VexRiscv/src/main/c/common/standalone.mk @@ -0,0 +1,74 @@ + + +LDFLAGS += -lc + +CFLAGS += -I${STANDALONE}/include + + + + +ifeq ($(DEBUG),yes) + CFLAGS += -g3 -Og +endif + +ifeq ($(DEBUG),no) + CFLAGS += -O3 +endif + + +LDFLAGS += -nostdlib -lgcc -nostartfiles -ffreestanding -Wl,-Bstatic,-T,$(LDSCRIPT),-Map,$(OBJDIR)/$(PROJ_NAME).map,--print-memory-usage + + + +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).bin + +$(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).bin + rm -f $(OBJDIR)/$(PROJ_NAME).asm + find $(OBJDIR) -type f -name '*.o' -print0 | xargs -0 -r rm + +.SECONDARY: $(OBJS)
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