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a12fcf90ed
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>
108 lines
4.1 KiB
C
108 lines
4.1 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2023 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_LOONGARCH64_RELOC_H
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#define GRUB_LOONGARCH64_RELOC_H 1
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#include <grub/types.h>
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#define LOONGARCH64_STACK_MAX 16
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struct grub_loongarch64_stack
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{
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grub_uint64_t data[LOONGARCH64_STACK_MAX];
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int count;
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int top;
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};
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typedef struct grub_loongarch64_stack* grub_loongarch64_stack_t;
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void grub_loongarch64_stack_init (grub_loongarch64_stack_t stack);
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void grub_loongarch64_sop_push (grub_loongarch64_stack_t stack,
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grub_int64_t offset);
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void grub_loongarch64_sop_sub (grub_loongarch64_stack_t stack);
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void grub_loongarch64_sop_sl (grub_loongarch64_stack_t stack);
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void grub_loongarch64_sop_sr (grub_loongarch64_stack_t stack);
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void grub_loongarch64_sop_add (grub_loongarch64_stack_t stack);
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void grub_loongarch64_sop_and (grub_loongarch64_stack_t stack);
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void grub_loongarch64_sop_if_else (grub_loongarch64_stack_t stack);
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void grub_loongarch64_sop_32_s_10_5 (grub_loongarch64_stack_t stack,
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grub_uint64_t *place);
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void grub_loongarch64_sop_32_u_10_12 (grub_loongarch64_stack_t stack,
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grub_uint64_t *place);
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void grub_loongarch64_sop_32_s_10_12 (grub_loongarch64_stack_t stack,
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grub_uint64_t *place);
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void grub_loongarch64_sop_32_s_10_16 (grub_loongarch64_stack_t stack,
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grub_uint64_t *place);
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void grub_loongarch64_sop_32_s_10_16_s2 (grub_loongarch64_stack_t stack,
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grub_uint64_t *place);
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void grub_loongarch64_sop_32_s_5_20 (grub_loongarch64_stack_t stack,
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grub_uint64_t *place);
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void grub_loongarch64_sop_32_s_0_5_10_16_s2 (grub_loongarch64_stack_t stack,
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grub_uint64_t *place);
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void grub_loongarch64_sop_32_s_0_10_10_16_s2 (grub_loongarch64_stack_t stack,
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grub_uint64_t *place);
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#define GRUB_LOONGARCH64_RELOCATION(STACK, PLACE, OFFSET) \
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case R_LARCH_SOP_PUSH_ABSOLUTE: \
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grub_loongarch64_sop_push (STACK, OFFSET); \
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break; \
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case R_LARCH_SOP_SUB: \
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grub_loongarch64_sop_sub (STACK); \
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break; \
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case R_LARCH_SOP_SL: \
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grub_loongarch64_sop_sl (STACK); \
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break; \
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case R_LARCH_SOP_SR: \
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grub_loongarch64_sop_sr (STACK); \
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break; \
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case R_LARCH_SOP_ADD: \
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grub_loongarch64_sop_add (STACK); \
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break; \
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case R_LARCH_SOP_AND: \
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grub_loongarch64_sop_and (STACK); \
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break; \
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case R_LARCH_SOP_IF_ELSE: \
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grub_loongarch64_sop_if_else (STACK); \
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break; \
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case R_LARCH_SOP_POP_32_S_10_5: \
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grub_loongarch64_sop_32_s_10_5 (STACK, PLACE); \
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break; \
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case R_LARCH_SOP_POP_32_U_10_12: \
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grub_loongarch64_sop_32_u_10_12 (STACK, PLACE); \
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break; \
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case R_LARCH_SOP_POP_32_S_10_12: \
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grub_loongarch64_sop_32_s_10_12 (STACK, PLACE); \
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break; \
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case R_LARCH_SOP_POP_32_S_10_16: \
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grub_loongarch64_sop_32_s_10_16 (STACK, PLACE); \
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break; \
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case R_LARCH_SOP_POP_32_S_10_16_S2: \
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grub_loongarch64_sop_32_s_10_16_s2 (STACK, PLACE); \
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break; \
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case R_LARCH_SOP_POP_32_S_5_20: \
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grub_loongarch64_sop_32_s_5_20 (STACK, PLACE); \
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break; \
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case R_LARCH_SOP_POP_32_S_0_5_10_16_S2: \
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grub_loongarch64_sop_32_s_0_5_10_16_s2 (STACK, PLACE); \
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break; \
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case R_LARCH_SOP_POP_32_S_0_10_10_16_S2: \
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grub_loongarch64_sop_32_s_0_10_10_16_s2 (STACK, PLACE); \
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break;
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#endif /* GRUB_LOONGARCH64_RELOC_H */
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