diff options
Diffstat (limited to '0001-Revert-powerpc-Simplify-module-TOC-handling.patch')
| -rw-r--r-- | 0001-Revert-powerpc-Simplify-module-TOC-handling.patch | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/0001-Revert-powerpc-Simplify-module-TOC-handling.patch b/0001-Revert-powerpc-Simplify-module-TOC-handling.patch new file mode 100644 index 000000000..85438ee80 --- /dev/null +++ b/0001-Revert-powerpc-Simplify-module-TOC-handling.patch @@ -0,0 +1,103 @@ +From b66e7caab9e6634dadce2aced6e174c095e1ca0e Mon Sep 17 00:00:00 2001 +From: Peter Robinson <pbrobinson@gmail.com> +Date: Tue, 9 Feb 2016 15:00:02 +0000 +Subject: [PATCH] Revert "powerpc: Simplify module TOC handling" + +This reverts commit c153693d7eb9eeb28478aa2deaaf0b4e7b5ff5e9. +--- + arch/powerpc/kernel/misc_64.S | 28 ++++++++++++++++++++++++++++ + arch/powerpc/kernel/module_64.c | 12 +++--------- + scripts/mod/modpost.c | 3 +-- + 3 files changed, 32 insertions(+), 11 deletions(-) + +diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S +index f28754c..db475d4 100644 +--- a/arch/powerpc/kernel/misc_64.S ++++ b/arch/powerpc/kernel/misc_64.S +@@ -701,3 +701,31 @@ _GLOBAL(kexec_sequence) + li r5,0 + blr /* image->start(physid, image->start, 0); */ + #endif /* CONFIG_KEXEC */ ++ ++#ifdef CONFIG_MODULES ++#if defined(_CALL_ELF) && _CALL_ELF == 2 ++ ++#ifdef CONFIG_MODVERSIONS ++.weak __crc_TOC. ++.section "___kcrctab+TOC.","a" ++.globl __kcrctab_TOC. ++__kcrctab_TOC.: ++ .llong __crc_TOC. ++#endif ++ ++/* ++ * Export a fake .TOC. since both modpost and depmod will complain otherwise. ++ * Both modpost and depmod strip the leading . so we do the same here. ++ */ ++.section "__ksymtab_strings","a" ++__kstrtab_TOC.: ++ .asciz "TOC." ++ ++.section "___ksymtab+TOC.","a" ++/* This symbol name is important: it's used by modpost to find exported syms */ ++.globl __ksymtab_TOC. ++__ksymtab_TOC.: ++ .llong 0 /* .value */ ++ .llong __kstrtab_TOC. ++#endif /* ELFv2 */ ++#endif /* MODULES */ +diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c +index ac64ffd..59663af 100644 +--- a/arch/powerpc/kernel/module_64.c ++++ b/arch/powerpc/kernel/module_64.c +@@ -326,10 +326,7 @@ static void dedotify_versions(struct modversion_info *vers, + } + } + +-/* +- * Undefined symbols which refer to .funcname, hack to funcname. Make .TOC. +- * seem to be defined (value set later). +- */ ++/* Undefined symbols which refer to .funcname, hack to funcname (or .TOC.) */ + static void dedotify(Elf64_Sym *syms, unsigned int numsyms, char *strtab) + { + unsigned int i; +@@ -337,11 +334,8 @@ static void dedotify(Elf64_Sym *syms, unsigned int numsyms, char *strtab) + for (i = 1; i < numsyms; i++) { + if (syms[i].st_shndx == SHN_UNDEF) { + char *name = strtab + syms[i].st_name; +- if (name[0] == '.') { +- if (strcmp(name+1, "TOC.") == 0) +- syms[i].st_shndx = SHN_ABS; ++ if (name[0] == '.') + memmove(name, name+1, strlen(name)); +- } + } + } + } +@@ -357,7 +351,7 @@ static Elf64_Sym *find_dot_toc(Elf64_Shdr *sechdrs, + numsyms = sechdrs[symindex].sh_size / sizeof(Elf64_Sym); + + for (i = 1; i < numsyms; i++) { +- if (syms[i].st_shndx == SHN_ABS ++ if (syms[i].st_shndx == SHN_UNDEF + && strcmp(strtab + syms[i].st_name, "TOC.") == 0) + return &syms[i]; + } +diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c +index 48958d3..e080746 100644 +--- a/scripts/mod/modpost.c ++++ b/scripts/mod/modpost.c +@@ -594,8 +594,7 @@ static int ignore_undef_symbol(struct elf_info *info, const char *symname) + if (strncmp(symname, "_restgpr0_", sizeof("_restgpr0_") - 1) == 0 || + strncmp(symname, "_savegpr0_", sizeof("_savegpr0_") - 1) == 0 || + strncmp(symname, "_restvr_", sizeof("_restvr_") - 1) == 0 || +- strncmp(symname, "_savevr_", sizeof("_savevr_") - 1) == 0 || +- strcmp(symname, ".TOC.") == 0) ++ strncmp(symname, "_savevr_", sizeof("_savevr_") - 1) == 0) + return 1; + /* Do not ignore this symbol */ + return 0; +-- +2.5.0 + |