ab1ef68e54019937cf859f2c86c9ead6f3e62f19 - SHIFTPHONES/kernel/common

commit	ab1ef68e54019937cf859f2c86c9ead6f3e62f19	[log] [tgz]
author	Zong Li <zong@andestech.com>	Thu Mar 15 16:50:41 2018 +0800
committer	Palmer Dabbelt <palmer@sifive.com>	Mon Apr 02 20:00:54 2018 -0700
tree	15fd30ddaaf18d61caf77f8748e291f3802987b5
parent	0adb32858b0bddf4ada5f364a84ed60b196dbcda [diff]

RISC-V: Add sections of PLT and GOT for kernel module

The address of external symbols will locate more than 32-bit offset
in 64-bit kernel with sv39 or sv48 virtual addressing.

Module loader emits the GOT and PLT entries for data symbols and
function symbols respectively.

The PLT entry is a trampoline code for jumping to the 64-bit
real address. The GOT entry is just the data symbol address.

Signed-off-by: Zong Li <zong@andestech.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

arch/riscv/Kconfig[diff]
arch/riscv/Makefile[diff]
arch/riscv/include/asm/module.h[Added - diff]
arch/riscv/kernel/Makefile[diff]
arch/riscv/kernel/module-sections.c[Added - diff]
arch/riscv/kernel/module.lds[Added - diff]

6 files changed

tree: 15fd30ddaaf18d61caf77f8748e291f3802987b5