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modpost: pass r_type to addend_*_rel()
authorMasahiro Yamada <masahiroy@kernel.org>
Sun, 23 Jul 2023 10:04:44 +0000 (19:04 +0900)
committerMasahiro Yamada <masahiroy@kernel.org>
Mon, 31 Jul 2023 14:42:14 +0000 (23:42 +0900)
All of addend_*_rel() need the Elf_Rela pointer just for calculating
ELF_R_TYPE(r->r_info).

You can do it on the caller to de-duplicate the code.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
scripts/mod/modpost.c

index a8e85b7..570a6cb 100644 (file)
@@ -1257,11 +1257,9 @@ static void check_section_mismatch(struct module *mod, struct elf_info *elf,
                                 tosec, taddr);
 }
 
-static Elf_Addr addend_386_rel(uint32_t *location, Elf_Rela *r)
+static Elf_Addr addend_386_rel(uint32_t *location, unsigned int r_type)
 {
-       unsigned int r_typ = ELF_R_TYPE(r->r_info);
-
-       switch (r_typ) {
+       switch (r_type) {
        case R_386_32:
                return TO_NATIVE(*location);
        case R_386_PC32:
@@ -1312,13 +1310,12 @@ static int32_t sign_extend32(int32_t value, int index)
        return (int32_t)(value << shift) >> shift;
 }
 
-static Elf_Addr addend_arm_rel(void *loc, Elf_Sym *sym, Elf_Rela *r)
+static Elf_Addr addend_arm_rel(void *loc, Elf_Sym *sym, unsigned int r_type)
 {
-       unsigned int r_typ = ELF_R_TYPE(r->r_info);
        uint32_t inst, upper, lower, sign, j1, j2;
        int32_t offset;
 
-       switch (r_typ) {
+       switch (r_type) {
        case R_ARM_ABS32:
        case R_ARM_REL32:
                inst = TO_NATIVE(*(uint32_t *)loc);
@@ -1397,13 +1394,12 @@ static Elf_Addr addend_arm_rel(void *loc, Elf_Sym *sym, Elf_Rela *r)
        return (Elf_Addr)(-1);
 }
 
-static Elf_Addr addend_mips_rel(uint32_t *location, Elf_Rela *r)
+static Elf_Addr addend_mips_rel(uint32_t *location, unsigned int r_type)
 {
-       unsigned int r_typ = ELF_R_TYPE(r->r_info);
        uint32_t inst;
 
        inst = TO_NATIVE(*location);
-       switch (r_typ) {
+       switch (r_type) {
        case R_MIPS_LO16:
                return inst & 0xffff;
        case R_MIPS_26:
@@ -1500,6 +1496,7 @@ static void section_rel(struct module *mod, struct elf_info *elf,
                Elf_Sym *tsym;
                Elf_Addr taddr = 0;
                void *loc;
+               unsigned int r_type;
 
                r.r_offset = TO_NATIVE(rel->r_offset);
 #if KERNEL_ELFCLASS == ELFCLASS64
@@ -1520,16 +1517,17 @@ static void section_rel(struct module *mod, struct elf_info *elf,
 
                loc = sym_get_data_by_offset(elf, fsecndx, r.r_offset);
                tsym = elf->symtab_start + r_sym;
+               r_type = ELF_R_TYPE(r.r_info);
 
                switch (elf->hdr->e_machine) {
                case EM_386:
-                       taddr = addend_386_rel(loc, &r);
+                       taddr = addend_386_rel(loc, r_type);
                        break;
                case EM_ARM:
-                       taddr = addend_arm_rel(loc, tsym, &r);
+                       taddr = addend_arm_rel(loc, tsym, r_type);
                        break;
                case EM_MIPS:
-                       taddr = addend_mips_rel(loc, &r);
+                       taddr = addend_mips_rel(loc, r_type);
                        break;
                default:
                        fatal("Please add code to calculate addend for this architecture\n");