On 2022/7/29 15:11, Xiaotian Wu wrote:
Signed-off-by: Xiaotian Wu <wuxiaot...@loongson.cn>
Signed-off-by: Zhou Yang <zhouy...@loongson.cn>
---
include/grub/elf.h | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/include/grub/elf.h b/include/grub/elf.h
index c478933ee..1c8d4f5d5 100644
--- a/include/grub/elf.h
+++ b/include/grub/elf.h
@@ -248,6 +248,7 @@ typedef struct
#define EM_NUM 95
#define EM_AARCH64 183 /* ARM 64-bit architecture */
#define EM_RISCV 243 /* RISC-V */
+#define EM_LOONGARCH 258 /* LoongArch */
/* If it is necessary to assign new unofficial EM_* values, please
pick large random numbers (0x8523, 0xa7f2, etc.) to minimize the
@@ -2531,6 +2532,28 @@ typedef Elf32_Addr Elf32_Conflict;
#define R_RISCV_SET32 56
#define R_RISCV_32_PCREL 57
+/* LoongArch relocations */
+#define R_LARCH_NONE 0
+#define R_LARCH_64 2
+#define R_LARCH_MARK_LA 20
+#define R_LARCH_SOP_PUSH_PCREL 22
+#define R_LARCH_SOP_PUSH_ABSOLUTE 23
+#define R_LARCH_SOP_PUSH_PLT_PCREL 29
+#define R_LARCH_SOP_SUB 32
+#define R_LARCH_SOP_SL 33
+#define R_LARCH_SOP_SR 34
+#define R_LARCH_SOP_ADD 35
+#define R_LARCH_SOP_AND 36
+#define R_LARCH_SOP_IF_ELSE 37
+#define R_LARCH_SOP_POP_32_S_10_5 38
+#define R_LARCH_SOP_POP_32_U_10_12 39
+#define R_LARCH_SOP_POP_32_S_10_12 40
+#define R_LARCH_SOP_POP_32_S_10_16 41
+#define R_LARCH_SOP_POP_32_S_10_16_S2 42
+#define R_LARCH_SOP_POP_32_S_5_20 43
+#define R_LARCH_SOP_POP_32_S_0_5_10_16_S2 44
+#define R_LARCH_SOP_POP_32_S_0_10_10_16_S2 45
+
Welp. This almost certainly needs some additional work, now that the
new-style relocs [1][2] are upstreamed, and bound to be generated with
the combo of binutils 2.40 trunk and gcc 13.0 trunk. So we'll need to
support both flavors in order to stay compatible with both older and
newer toolchains.
Do you think this part could be finished relatively quickly so as to not
miss the next grub release?
[1]:
https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=6d13722a97cee3fd397e116bde3bcedbb1e220be
[2]: https://github.com/loongson/LoongArch-Documentation/pull/57
#ifdef GRUB_TARGET_WORDSIZE
#if GRUB_TARGET_WORDSIZE == 32
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