This patch implements relocation support for ACRN RISC-V to enable
position-independent execution. The hypervisor can now be loaded at any
physical address and will automatically relocate itself at runtime. Key
changes:
- Add relocate() function to process R_RISCV_RELATIVE relocations in
.rela sections during early boot
- Implement arch_get_hv_image_delta() to calculate the load address offset
from the configured base address
- Add relocation processing in cpu_entry.S before jumping to C code
- Update linker script to include .rela sections for relocation data
- Define R_RISCV_RELATIVE relocation type and linker symbol definitions
Tracked-On: #8825
Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
Move dynamic sections and relocation sections data structures to
elf.h and enclose function relocate with CONFIG_RELOC. The input
parameter struct Elf64_Dyn *dynamic is not used by x86-64 now because
x86-64 can use pc-relative addressing to get the acutaly load address
of _DYNAMIC in the C code.
Tracked-On: #8825
Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
The definition of elf32_prog_entry with wrong comments,
p_filesz should means size of segment in file and p_memsz
should means size of segment in memory.
Tracked-On: #8642
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
