LoongArch: Adjust module loader for 32BIT/64BIT

Adjust module loader for both 32BIT and 64BIT, including: change the s64
type to long, change the u64 type to unsigned long, change the plt entry
definition and handling, etc.

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Author: chenhuacai

arch/loongarch/include/asm/module.h

@@ -38,8 +38,10 @@ struct got_entry {
 
 struct plt_entry {
 	u32 inst_lu12iw;
+#ifdef CONFIG_64BIT
 	u32 inst_lu32id;
 	u32 inst_lu52id;
+#endif
 	u32 inst_jirl;
 };
 
@@ -57,6 +59,14 @@ static inline struct got_entry emit_got_entry(Elf_Addr val)
 
 static inline struct plt_entry emit_plt_entry(unsigned long val)
 {
+#ifdef CONFIG_32BIT
+	u32 lu12iw, jirl;
+
+	lu12iw = larch_insn_gen_lu12iw(LOONGARCH_GPR_T1, ADDR_IMM(val, LU12IW));
+	jirl = larch_insn_gen_jirl(0, LOONGARCH_GPR_T1, ADDR_IMM(val, ORI));
+
+	return (struct plt_entry) { lu12iw, jirl };
+#else
 	u32 lu12iw, lu32id, lu52id, jirl;
 
 	lu12iw = larch_insn_gen_lu12iw(LOONGARCH_GPR_T1, ADDR_IMM(val, LU12IW));
@@ -65,6 +75,7 @@ static inline struct plt_entry emit_plt_entry(unsigned long val)
 	jirl = larch_insn_gen_jirl(0, LOONGARCH_GPR_T1, ADDR_IMM(val, ORI));
 
 	return (struct plt_entry) { lu12iw, lu32id, lu52id, jirl };
+#endif
 }
 
 static inline struct plt_idx_entry emit_plt_idx_entry(unsigned long val)

arch/loongarch/include/asm/percpu.h

@@ -13,7 +13,7 @@
  * the loading address of main kernel image, but far from where the modules are
  * loaded. Tell the compiler this fact when using explicit relocs.
  */
-#if defined(MODULE) && defined(CONFIG_AS_HAS_EXPLICIT_RELOCS)
+#if defined(MODULE) && defined(CONFIG_AS_HAS_EXPLICIT_RELOCS) && defined(CONFIG_64BIT)
 # if __has_attribute(model)
 #  define PER_CPU_ATTRIBUTES __attribute__((model("extreme")))
 # else

arch/loongarch/kernel/module-sections.c

@@ -93,6 +93,7 @@ static void count_max_entries(Elf_Rela *relas, int num,
 			(*plts)++;
 			break;
 		case R_LARCH_GOT_PC_HI20:
+		case R_LARCH_GOT_PCADD_HI20:
 			(*gots)++;
 			break;
 		default: