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loongarch: Add support for ELF psABI v1.00 relocations

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This patch adds support of the stack-based LoongArch relocations
throughout GRUB, including tools, dynamic linkage, and support for
conversion of ELF relocations into PE ones. A stack machine is required
to handle these per the spec [1] (see the R_LARCH_SOP types), of which
a simple implementation is included.

These relocations are produced by binutils 2.38 and 2.39, while the newer
v2.00 relocs require more recent toolchain (binutils 2.40+ & gcc 13+, or
LLVM 16+). GCC 13 has not been officially released as of early 2023, so
support for v1.00 relocs are expected to stay relevant for a while.

[1] https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html#_relocations

Signed-off-by: Zhou Yang <zhouyang@loongson.cn>
Signed-off-by: Xiaotian Wu <wuxiaotian@loongson.cn>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>
This commit is contained in:
Wentao Guan
2024-08-25 15:59:19 +08:00
parent 19c95139b9
commit a12fcf90ed
7 changed files with 522 additions and 3 deletions
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1
GRUB2/MOD_SRC/grub-2.04/include/grub/dl.h
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@@ -299,6 +299,7 @@ grub_arch_dl_get_tramp_got_size (const void *ehdr, grub_size_t *tramp,
#endif
#if defined (__aarch64__) || defined (__sparc__) || (defined (__mips__) && (_MIPS_SIM == _ABI64)) || \
defined (__loongarch_lp64) || \
(defined(__riscv) && (__riscv_xlen == 64))
#define GRUB_ARCH_DL_TRAMP_ALIGN 8
#define GRUB_ARCH_DL_GOT_ALIGN 8