/usr/share/doc/dietlibc-doc/PORTING is in dietlibc-doc 0.34~cvs20160606-6.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | To port the diet libc to a new architecture, you need to:
- edit Makefile to detect the architecture
- create a directory for the architecture, and put a Makefile.add in
it. Look at the other Makefile.adds for guidance.
- provide start.S (the start code, look at glibc)
- provide unified.S (the unified syscall)
- provide syscalls.h (the syscall numbers, from asm/unistd.h)
- provide setjmp and longjmp
- edit include/setjmp.h
- pipe, clone and mmap often need special care
- edit include/sys/ioctl.h
- edit include/sys/ptrace.h
- edit include/asm/sigcontext.h
- edit include/sys/ucontext.h
- edit include/endian.h
- edit include/fcntl.h
- edit include/sys/mman.h
- edit include/sys/shm.h
- edit include/sys/stat.h
- edit include/sys/tls.h
- edit include/errno.h
- edit syscalls.h
- edit include/termios.h
- edit lib/__get_cur_tcb.c
- edit diet.c to make it recognize the architecture and add proper
CFLAGS
- edit libcompat/syscall.S
- edit include/fenv.h
(I may have missed a few)
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