makefile

一个mips虚拟机非常好代码,使用C++来编写的,希望大家多学学,

.SILENT:
.SUFFIXES:
.SUFFIXES: .o .c .S

SHELL=/bin/bash

# Make pointers 32 bit as we're generating 32 bit ELF and don't need 64 bit
# pointers anyway.

ADDR = FFFFFFFFBFC00000

XDEV   ?= mips64-elf
CC     = ${XDEV}-gcc
LD     = ${XDEV}-ld
CFLAGS = -D__mips__ -O -G 0 -mips3 -fno-builtin -nostdlib -nostdinc -mabi=64 -mno-abicalls -non_shared -Wa,-non_shared,-G,0
#LFLAGS = -e __start -mips3 -Ttext=0xFFFFFFFFBFBFFFF0
LFLAGS = -mips3 -nostdlib -static -Tlinker.lds
#-Ttext=0xFFFFFFFFBFC00000 -Tdata=0xFFFFFFFFBFc50000
OFILES = crt0.o loader.o stdlib.o z85230.o 

.c.o .S.o:
	echo 'Compiling "$<"' >&2
	${CC} ${CFLAGS} -o $@ -c $<

all: prologue boot-block
	echo 'Done.' >&2

clean:
	echo 'Mopping up.' >&2
	rm -f *.[os] boot-block* strip core *.core *~

prologue:
	echo 'Using ${XDEV}'
	echo '  CFLAGS = ${CFLAGS}'
	echo '  LFLAGS = ${LFLAGS}'

boot-block.o: ${OFILES}
	echo 'Linking "$@".' >&2	
	${LD} ${LFLAGS} -o $@ ${OFILES}

#boot-block: boot-block.o
#	${XDEV}-objdump --section-headers boot-block.o \
#		| fgrep .text \
#		| { \
#		echo 'Extracting text segment into "$@".' >&2; \
#		read IDX NAME SIZE VMA LMA OFF ALIGN; \
#		SIZE=$$((0x$$SIZE - 16)); \
#		OFF=$$((0x$$OFF + 16)); \
#		echo "($$SIZE bytes from offset $$OFF)" >&2; \
#		dd if=boot-block.o of=$@ bs=1 \
#			skip=$$OFF count=$$SIZE 2>/dev/null; \
#	}
boot-block: boot-block.o
	${XDEV}-objcopy -O binary boot-block.o boot-block

crt0.o: crt0.S regdef.h
loader.o: loader.c stdlib.h elf.h
#printf.o: printf.c stdarg.h stdlib.h
stdlib.o: stdlib.c
stdlib.h: stdarg.h
stdarg.h: va-mips.h