diff options
| -rw-r--r-- | target/linux/cobalt/patches/001-no_module_reloc.patch | 335 | ||||
| -rw-r--r-- | target/linux/octeon/patches/106-no_module_reloc.patch | 335 | ||||
| -rw-r--r-- | target/linux/sibyte/patches/106-no_module_reloc.patch | 335 |
3 files changed, 1005 insertions, 0 deletions
diff --git a/target/linux/cobalt/patches/001-no_module_reloc.patch b/target/linux/cobalt/patches/001-no_module_reloc.patch new file mode 100644 index 0000000000..833dea7919 --- /dev/null +++ b/target/linux/cobalt/patches/001-no_module_reloc.patch @@ -0,0 +1,335 @@ +diff -urN linux-2.6.30.7/arch/mips/Makefile linux-2.6.30.7.new/arch/mips/Makefile +--- linux-2.6.30.7/arch/mips/Makefile 2009-09-27 13:17:16.000000000 +0200 ++++ linux-2.6.30.7.new/arch/mips/Makefile 2009-09-15 19:46:05.000000000 +0200 +@@ -83,7 +83,7 @@ + cflags-y += -G 0 -mno-abicalls -fno-pic -pipe + cflags-y += -msoft-float + LDFLAGS_vmlinux += -G 0 -static -n -nostdlib +-MODFLAGS += -mno-long-calls ++MODFLAGS += -mlong-calls + + cflags-y += -ffreestanding + +diff -urN linux-2.6.30.7/arch/mips/include/asm/module.h linux-2.6.30.7.new/arch/mips/include/asm/module.h +--- linux-2.6.30.7/arch/mips/include/asm/module.h 2009-09-27 13:17:16.000000000 +0200 ++++ linux-2.6.30.7.new/arch/mips/include/asm/module.h 2009-09-15 19:46:05.000000000 +0200 +@@ -9,11 +9,6 @@ + struct list_head dbe_list; + const struct exception_table_entry *dbe_start; + const struct exception_table_entry *dbe_end; +- +- void *plt_tbl; +- unsigned int core_plt_offset; +- unsigned int core_plt_size; +- unsigned int init_plt_offset; + }; + + typedef uint8_t Elf64_Byte; /* Type for a 8-bit quantity. */ +diff -urN linux-2.6.30.7/arch/mips/kernel/module.c linux-2.6.30.7.new/arch/mips/kernel/module.c +--- linux-2.6.30.7/arch/mips/kernel/module.c 2009-09-27 13:17:16.000000000 +0200 ++++ linux-2.6.30.7.new/arch/mips/kernel/module.c 2009-09-15 19:46:05.000000000 +0200 +@@ -43,116 +43,6 @@ + static LIST_HEAD(dbe_list); + static DEFINE_SPINLOCK(dbe_lock); + +-/* +- * Get the potential max trampolines size required of the init and +- * non-init sections. Only used if we cannot find enough contiguous +- * physically mapped memory to put the module into. +- */ +-static unsigned int +-get_plt_size(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, +- const char *secstrings, unsigned int symindex, bool is_init) +-{ +- unsigned long ret = 0; +- unsigned int i, j; +- Elf_Sym *syms; +- +- /* Everything marked ALLOC (this includes the exported symbols) */ +- for (i = 1; i < hdr->e_shnum; ++i) { +- unsigned int info = sechdrs[i].sh_info; +- +- if (sechdrs[i].sh_type != SHT_REL +- && sechdrs[i].sh_type != SHT_RELA) +- continue; +- +- /* Not a valid relocation section? */ +- if (info >= hdr->e_shnum) +- continue; +- +- /* Don't bother with non-allocated sections */ +- if (!(sechdrs[info].sh_flags & SHF_ALLOC)) +- continue; +- +- /* If it's called *.init*, and we're not init, we're +- not interested */ +- if ((strstr(secstrings + sechdrs[i].sh_name, ".init") != 0) +- != is_init) +- continue; +- +- syms = (Elf_Sym *) sechdrs[symindex].sh_addr; +- if (sechdrs[i].sh_type == SHT_REL) { +- Elf_Mips_Rel *rel = (void *) sechdrs[i].sh_addr; +- unsigned int size = sechdrs[i].sh_size / sizeof(*rel); +- +- for (j = 0; j < size; ++j) { +- Elf_Sym *sym; +- +- if (ELF_MIPS_R_TYPE(rel[j]) != R_MIPS_26) +- continue; +- +- sym = syms + ELF_MIPS_R_SYM(rel[j]); +- if (!is_init && sym->st_shndx != SHN_UNDEF) +- continue; +- +- ret += 4 * sizeof(int); +- } +- } else { +- Elf_Mips_Rela *rela = (void *) sechdrs[i].sh_addr; +- unsigned int size = sechdrs[i].sh_size / sizeof(*rela); +- +- for (j = 0; j < size; ++j) { +- Elf_Sym *sym; +- +- if (ELF_MIPS_R_TYPE(rela[j]) != R_MIPS_26) +- continue; +- +- sym = syms + ELF_MIPS_R_SYM(rela[j]); +- if (!is_init && sym->st_shndx != SHN_UNDEF) +- continue; +- +- ret += 4 * sizeof(int); +- } +- } +- } +- +- return ret; +-} +- +-#ifndef MODULE_START +-static void *alloc_phys(unsigned long size) +-{ +- unsigned order; +- struct page *page; +- struct page *p; +- +- size = PAGE_ALIGN(size); +- order = get_order(size); +- +- page = alloc_pages(GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN | +- __GFP_THISNODE, order); +- if (!page) +- return NULL; +- +- split_page(page, order); +- +- for (p = page + (size >> PAGE_SHIFT); p < page + (1 << order); ++p) +- __free_page(p); +- +- return page_address(page); +-} +-#endif +- +-static void free_phys(void *ptr, unsigned long size) +-{ +- struct page *page; +- struct page *end; +- +- page = virt_to_page(ptr); +- end = page + (PAGE_ALIGN(size) >> PAGE_SHIFT); +- +- for (; page < end; ++page) +- __free_page(page); +-} +- + void *module_alloc(unsigned long size) + { + #ifdef MODULE_START +@@ -168,45 +58,16 @@ + + return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL); + #else +- void *ptr; +- + if (size == 0) + return NULL; +- +- ptr = alloc_phys(size); +- +- /* If we failed to allocate physically contiguous memory, +- * fall back to regular vmalloc. The module loader code will +- * create jump tables to handle long jumps */ +- if (!ptr) +- return vmalloc(size); +- +- return ptr; +-#endif +-} +- +-static inline bool is_phys_addr(void *ptr) +-{ +-#ifdef CONFIG_64BIT +- return (KSEGX((unsigned long)ptr) == CKSEG0); +-#else +- return (KSEGX(ptr) == KSEG0); ++ return vmalloc(size); + #endif + } + + /* Free memory returned from module_alloc */ + void module_free(struct module *mod, void *module_region) + { +- if (is_phys_addr(module_region)) { +- if (mod->module_init == module_region) +- free_phys(module_region, mod->init_size); +- else if (mod->module_core == module_region) +- free_phys(module_region, mod->core_size); +- else +- BUG(); +- } else { +- vfree(module_region); +- } ++ vfree(module_region); + /* FIXME: If module_region == mod->init_region, trim exception + table entries. */ + } +@@ -214,24 +75,6 @@ + int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs, + char *secstrings, struct module *mod) + { +- unsigned int symindex = 0; +- unsigned int core_size, init_size; +- int i; +- +- for (i = 1; i < hdr->e_shnum; i++) +- if (sechdrs[i].sh_type == SHT_SYMTAB) +- symindex = i; +- +- core_size = get_plt_size(hdr, sechdrs, secstrings, symindex, false); +- init_size = get_plt_size(hdr, sechdrs, secstrings, symindex, true); +- +- mod->arch.core_plt_offset = 0; +- mod->arch.core_plt_size = core_size; +- mod->arch.init_plt_offset = core_size; +- mod->arch.plt_tbl = kmalloc(core_size + init_size, GFP_KERNEL); +- if (!mod->arch.plt_tbl) +- return -ENOMEM; +- + return 0; + } + +@@ -254,41 +97,27 @@ + return 0; + } + +-static Elf_Addr add_plt_entry_to(unsigned *plt_offset, +- void *start, Elf_Addr v) ++static int apply_r_mips_26_rel(struct module *me, u32 *location, Elf_Addr v) + { +- unsigned *tramp = start + *plt_offset; +- +- *plt_offset += 4 * sizeof(int); +- +- /* adjust carry for addiu */ +- if (v & 0x00008000) +- v += 0x10000; +- +- tramp[0] = 0x3c190000 | (v >> 16); /* lui t9, hi16 */ +- tramp[1] = 0x27390000 | (v & 0xffff); /* addiu t9, t9, lo16 */ +- tramp[2] = 0x03200008; /* jr t9 */ +- tramp[3] = 0x00000000; /* nop */ +- +- return (Elf_Addr) tramp; +-} ++ if (v % 4) { ++ printk(KERN_ERR "module %s: dangerous relocation\n", me->name); ++ return -ENOEXEC; ++ } + +-static Elf_Addr add_plt_entry(struct module *me, void *location, Elf_Addr v) +-{ +- if (location >= me->module_core && +- location < me->module_core + me->core_size) +- return add_plt_entry_to(&me->arch.core_plt_offset, +- me->arch.plt_tbl, v); ++ if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) { ++ printk(KERN_ERR ++ "module %s: relocation overflow\n", ++ me->name); ++ return -ENOEXEC; ++ } + +- if (location >= me->module_init && +- location < me->module_init + me->init_size) +- return add_plt_entry_to(&me->arch.init_plt_offset, +- me->arch.plt_tbl, v); ++ *location = (*location & ~0x03ffffff) | ++ ((*location + (v >> 2)) & 0x03ffffff); + + return 0; + } + +-static int set_r_mips_26(struct module *me, u32 *location, u32 ofs, Elf_Addr v) ++static int apply_r_mips_26_rela(struct module *me, u32 *location, Elf_Addr v) + { + if (v % 4) { + printk(KERN_ERR "module %s: dangerous relocation\n", me->name); +@@ -296,31 +125,17 @@ + } + + if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) { +- v = add_plt_entry(me, location, v + (ofs << 2)); +- if (!v) { +- printk(KERN_ERR ++ printk(KERN_ERR + "module %s: relocation overflow\n", + me->name); +- return -ENOEXEC; +- } +- ofs = 0; ++ return -ENOEXEC; + } + +- *location = (*location & ~0x03ffffff) | ((ofs + (v >> 2)) & 0x03ffffff); ++ *location = (*location & ~0x03ffffff) | ((v >> 2) & 0x03ffffff); + + return 0; + } + +-static int apply_r_mips_26_rel(struct module *me, u32 *location, Elf_Addr v) +-{ +- return set_r_mips_26(me, location, *location & 0x03ffffff, v); +-} +- +-static int apply_r_mips_26_rela(struct module *me, u32 *location, Elf_Addr v) +-{ +- return set_r_mips_26(me, location, 0, v); +-} +- + static int apply_r_mips_hi16_rel(struct module *me, u32 *location, Elf_Addr v) + { + struct mips_hi16 *n; +@@ -585,23 +400,11 @@ + list_add(&me->arch.dbe_list, &dbe_list); + spin_unlock_irq(&dbe_lock); + } +- +- /* Get rid of the fixup trampoline if we're running the module +- * from physically mapped address space */ +- if (me->arch.core_plt_offset == 0 && +- me->arch.init_plt_offset == me->arch.core_plt_size && +- is_phys_addr(me->module_core)) { +- kfree(me->arch.plt_tbl); +- me->arch.plt_tbl = NULL; +- } +- + return 0; + } + + void module_arch_cleanup(struct module *mod) + { +- if (mod->arch.plt_tbl) +- kfree(mod->arch.plt_tbl); + spin_lock_irq(&dbe_lock); + list_del(&mod->arch.dbe_list); + spin_unlock_irq(&dbe_lock); diff --git a/target/linux/octeon/patches/106-no_module_reloc.patch b/target/linux/octeon/patches/106-no_module_reloc.patch new file mode 100644 index 0000000000..833dea7919 --- /dev/null +++ b/target/linux/octeon/patches/106-no_module_reloc.patch @@ -0,0 +1,335 @@ +diff -urN linux-2.6.30.7/arch/mips/Makefile linux-2.6.30.7.new/arch/mips/Makefile +--- linux-2.6.30.7/arch/mips/Makefile 2009-09-27 13:17:16.000000000 +0200 ++++ linux-2.6.30.7.new/arch/mips/Makefile 2009-09-15 19:46:05.000000000 +0200 +@@ -83,7 +83,7 @@ + cflags-y += -G 0 -mno-abicalls -fno-pic -pipe + cflags-y += -msoft-float + LDFLAGS_vmlinux += -G 0 -static -n -nostdlib +-MODFLAGS += -mno-long-calls ++MODFLAGS += -mlong-calls + + cflags-y += -ffreestanding + +diff -urN linux-2.6.30.7/arch/mips/include/asm/module.h linux-2.6.30.7.new/arch/mips/include/asm/module.h +--- linux-2.6.30.7/arch/mips/include/asm/module.h 2009-09-27 13:17:16.000000000 +0200 ++++ linux-2.6.30.7.new/arch/mips/include/asm/module.h 2009-09-15 19:46:05.000000000 +0200 +@@ -9,11 +9,6 @@ + struct list_head dbe_list; + const struct exception_table_entry *dbe_start; + const struct exception_table_entry *dbe_end; +- +- void *plt_tbl; +- unsigned int core_plt_offset; +- unsigned int core_plt_size; +- unsigned int init_plt_offset; + }; + + typedef uint8_t Elf64_Byte; /* Type for a 8-bit quantity. */ +diff -urN linux-2.6.30.7/arch/mips/kernel/module.c linux-2.6.30.7.new/arch/mips/kernel/module.c +--- linux-2.6.30.7/arch/mips/kernel/module.c 2009-09-27 13:17:16.000000000 +0200 ++++ linux-2.6.30.7.new/arch/mips/kernel/module.c 2009-09-15 19:46:05.000000000 +0200 +@@ -43,116 +43,6 @@ + static LIST_HEAD(dbe_list); + static DEFINE_SPINLOCK(dbe_lock); + +-/* +- * Get the potential max trampolines size required of the init and +- * non-init sections. Only used if we cannot find enough contiguous +- * physically mapped memory to put the module into. +- */ +-static unsigned int +-get_plt_size(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, +- const char *secstrings, unsigned int symindex, bool is_init) +-{ +- unsigned long ret = 0; +- unsigned int i, j; +- Elf_Sym *syms; +- +- /* Everything marked ALLOC (this includes the exported symbols) */ +- for (i = 1; i < hdr->e_shnum; ++i) { +- unsigned int info = sechdrs[i].sh_info; +- +- if (sechdrs[i].sh_type != SHT_REL +- && sechdrs[i].sh_type != SHT_RELA) +- continue; +- +- /* Not a valid relocation section? */ +- if (info >= hdr->e_shnum) +- continue; +- +- /* Don't bother with non-allocated sections */ +- if (!(sechdrs[info].sh_flags & SHF_ALLOC)) +- continue; +- +- /* If it's called *.init*, and we're not init, we're +- not interested */ +- if ((strstr(secstrings + sechdrs[i].sh_name, ".init") != 0) +- != is_init) +- continue; +- +- syms = (Elf_Sym *) sechdrs[symindex].sh_addr; +- if (sechdrs[i].sh_type == SHT_REL) { +- Elf_Mips_Rel *rel = (void *) sechdrs[i].sh_addr; +- unsigned int size = sechdrs[i].sh_size / sizeof(*rel); +- +- for (j = 0; j < size; ++j) { +- Elf_Sym *sym; +- +- if (ELF_MIPS_R_TYPE(rel[j]) != R_MIPS_26) +- continue; +- +- sym = syms + ELF_MIPS_R_SYM(rel[j]); +- if (!is_init && sym->st_shndx != SHN_UNDEF) +- continue; +- +- ret += 4 * sizeof(int); +- } +- } else { +- Elf_Mips_Rela *rela = (void *) sechdrs[i].sh_addr; +- unsigned int size = sechdrs[i].sh_size / sizeof(*rela); +- +- for (j = 0; j < size; ++j) { +- Elf_Sym *sym; +- +- if (ELF_MIPS_R_TYPE(rela[j]) != R_MIPS_26) +- continue; +- +- sym = syms + ELF_MIPS_R_SYM(rela[j]); +- if (!is_init && sym->st_shndx != SHN_UNDEF) +- continue; +- +- ret += 4 * sizeof(int); +- } +- } +- } +- +- return ret; +-} +- +-#ifndef MODULE_START +-static void *alloc_phys(unsigned long size) +-{ +- unsigned order; +- struct page *page; +- struct page *p; +- +- size = PAGE_ALIGN(size); +- order = get_order(size); +- +- page = alloc_pages(GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN | +- __GFP_THISNODE, order); +- if (!page) +- return NULL; +- +- split_page(page, order); +- +- for (p = page + (size >> PAGE_SHIFT); p < page + (1 << order); ++p) +- __free_page(p); +- +- return page_address(page); +-} +-#endif +- +-static void free_phys(void *ptr, unsigned long size) +-{ +- struct page *page; +- struct page *end; +- +- page = virt_to_page(ptr); +- end = page + (PAGE_ALIGN(size) >> PAGE_SHIFT); +- +- for (; page < end; ++page) +- __free_page(page); +-} +- + void *module_alloc(unsigned long size) + { + #ifdef MODULE_START +@@ -168,45 +58,16 @@ + + return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL); + #else +- void *ptr; +- + if (size == 0) + return NULL; +- +- ptr = alloc_phys(size); +- +- /* If we failed to allocate physically contiguous memory, +- * fall back to regular vmalloc. The module loader code will +- * create jump tables to handle long jumps */ +- if (!ptr) +- return vmalloc(size); +- +- return ptr; +-#endif +-} +- +-static inline bool is_phys_addr(void *ptr) +-{ +-#ifdef CONFIG_64BIT +- return (KSEGX((unsigned long)ptr) == CKSEG0); +-#else +- return (KSEGX(ptr) == KSEG0); ++ return vmalloc(size); + #endif + } + + /* Free memory returned from module_alloc */ + void module_free(struct module *mod, void *module_region) + { +- if (is_phys_addr(module_region)) { +- if (mod->module_init == module_region) +- free_phys(module_region, mod->init_size); +- else if (mod->module_core == module_region) +- free_phys(module_region, mod->core_size); +- else +- BUG(); +- } else { +- vfree(module_region); +- } ++ vfree(module_region); + /* FIXME: If module_region == mod->init_region, trim exception + table entries. */ + } +@@ -214,24 +75,6 @@ + int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs, + char *secstrings, struct module *mod) + { +- unsigned int symindex = 0; +- unsigned int core_size, init_size; +- int i; +- +- for (i = 1; i < hdr->e_shnum; i++) +- if (sechdrs[i].sh_type == SHT_SYMTAB) +- symindex = i; +- +- core_size = get_plt_size(hdr, sechdrs, secstrings, symindex, false); +- init_size = get_plt_size(hdr, sechdrs, secstrings, symindex, true); +- +- mod->arch.core_plt_offset = 0; +- mod->arch.core_plt_size = core_size; +- mod->arch.init_plt_offset = core_size; +- mod->arch.plt_tbl = kmalloc(core_size + init_size, GFP_KERNEL); +- if (!mod->arch.plt_tbl) +- return -ENOMEM; +- + return 0; + } + +@@ -254,41 +97,27 @@ + return 0; + } + +-static Elf_Addr add_plt_entry_to(unsigned *plt_offset, +- void *start, Elf_Addr v) ++static int apply_r_mips_26_rel(struct module *me, u32 *location, Elf_Addr v) + { +- unsigned *tramp = start + *plt_offset; +- +- *plt_offset += 4 * sizeof(int); +- +- /* adjust carry for addiu */ +- if (v & 0x00008000) +- v += 0x10000; +- +- tramp[0] = 0x3c190000 | (v >> 16); /* lui t9, hi16 */ +- tramp[1] = 0x27390000 | (v & 0xffff); /* addiu t9, t9, lo16 */ +- tramp[2] = 0x03200008; /* jr t9 */ +- tramp[3] = 0x00000000; /* nop */ +- +- return (Elf_Addr) tramp; +-} ++ if (v % 4) { ++ printk(KERN_ERR "module %s: dangerous relocation\n", me->name); ++ return -ENOEXEC; ++ } + +-static Elf_Addr add_plt_entry(struct module *me, void *location, Elf_Addr v) +-{ +- if (location >= me->module_core && +- location < me->module_core + me->core_size) +- return add_plt_entry_to(&me->arch.core_plt_offset, +- me->arch.plt_tbl, v); ++ if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) { ++ printk(KERN_ERR ++ "module %s: relocation overflow\n", ++ me->name); ++ return -ENOEXEC; ++ } + +- if (location >= me->module_init && +- location < me->module_init + me->init_size) +- return add_plt_entry_to(&me->arch.init_plt_offset, +- me->arch.plt_tbl, v); ++ *location = (*location & ~0x03ffffff) | ++ ((*location + (v >> 2)) & 0x03ffffff); + + return 0; + } + +-static int set_r_mips_26(struct module *me, u32 *location, u32 ofs, Elf_Addr v) ++static int apply_r_mips_26_rela(struct module *me, u32 *location, Elf_Addr v) + { + if (v % 4) { + printk(KERN_ERR "module %s: dangerous relocation\n", me->name); +@@ -296,31 +125,17 @@ + } + + if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) { +- v = add_plt_entry(me, location, v + (ofs << 2)); +- if (!v) { +- printk(KERN_ERR ++ printk(KERN_ERR + "module %s: relocation overflow\n", + me->name); +- return -ENOEXEC; +- } +- ofs = 0; ++ return -ENOEXEC; + } + +- *location = (*location & ~0x03ffffff) | ((ofs + (v >> 2)) & 0x03ffffff); ++ *location = (*location & ~0x03ffffff) | ((v >> 2) & 0x03ffffff); + + return 0; + } + +-static int apply_r_mips_26_rel(struct module *me, u32 *location, Elf_Addr v) +-{ +- return set_r_mips_26(me, location, *location & 0x03ffffff, v); +-} +- +-static int apply_r_mips_26_rela(struct module *me, u32 *location, Elf_Addr v) +-{ +- return set_r_mips_26(me, location, 0, v); +-} +- + static int apply_r_mips_hi16_rel(struct module *me, u32 *location, Elf_Addr v) + { + struct mips_hi16 *n; +@@ -585,23 +400,11 @@ + list_add(&me->arch.dbe_list, &dbe_list); + spin_unlock_irq(&dbe_lock); + } +- +- /* Get rid of the fixup trampoline if we're running the module +- * from physically mapped address space */ +- if (me->arch.core_plt_offset == 0 && +- me->arch.init_plt_offset == me->arch.core_plt_size && +- is_phys_addr(me->module_core)) { +- kfree(me->arch.plt_tbl); +- me->arch.plt_tbl = NULL; +- } +- + return 0; + } + + void module_arch_cleanup(struct module *mod) + { +- if (mod->arch.plt_tbl) +- kfree(mod->arch.plt_tbl); + spin_lock_irq(&dbe_lock); + list_del(&mod->arch.dbe_list); + spin_unlock_irq(&dbe_lock); diff --git a/target/linux/sibyte/patches/106-no_module_reloc.patch b/target/linux/sibyte/patches/106-no_module_reloc.patch new file mode 100644 index 0000000000..833dea7919 --- /dev/null +++ b/target/linux/sibyte/patches/106-no_module_reloc.patch @@ -0,0 +1,335 @@ +diff -urN linux-2.6.30.7/arch/mips/Makefile linux-2.6.30.7.new/arch/mips/Makefile +--- linux-2.6.30.7/arch/mips/Makefile 2009-09-27 13:17:16.000000000 +0200 ++++ linux-2.6.30.7.new/arch/mips/Makefile 2009-09-15 19:46:05.000000000 +0200 +@@ -83,7 +83,7 @@ + cflags-y += -G 0 -mno-abicalls -fno-pic -pipe + cflags-y += -msoft-float + LDFLAGS_vmlinux += -G 0 -static -n -nostdlib +-MODFLAGS += -mno-long-calls ++MODFLAGS += -mlong-calls + + cflags-y += -ffreestanding + +diff -urN linux-2.6.30.7/arch/mips/include/asm/module.h linux-2.6.30.7.new/arch/mips/include/asm/module.h +--- linux-2.6.30.7/arch/mips/include/asm/module.h 2009-09-27 13:17:16.000000000 +0200 ++++ linux-2.6.30.7.new/arch/mips/include/asm/module.h 2009-09-15 19:46:05.000000000 +0200 +@@ -9,11 +9,6 @@ + struct list_head dbe_list; + const struct exception_table_entry *dbe_start; + const struct exception_table_entry *dbe_end; +- +- void *plt_tbl; +- unsigned int core_plt_offset; +- unsigned int core_plt_size; +- unsigned int init_plt_offset; + }; + + typedef uint8_t Elf64_Byte; /* Type for a 8-bit quantity. */ +diff -urN linux-2.6.30.7/arch/mips/kernel/module.c linux-2.6.30.7.new/arch/mips/kernel/module.c +--- linux-2.6.30.7/arch/mips/kernel/module.c 2009-09-27 13:17:16.000000000 +0200 ++++ linux-2.6.30.7.new/arch/mips/kernel/module.c 2009-09-15 19:46:05.000000000 +0200 +@@ -43,116 +43,6 @@ + static LIST_HEAD(dbe_list); + static DEFINE_SPINLOCK(dbe_lock); + +-/* +- * Get the potential max trampolines size required of the init and +- * non-init sections. Only used if we cannot find enough contiguous +- * physically mapped memory to put the module into. +- */ +-static unsigned int +-get_plt_size(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, +- const char *secstrings, unsigned int symindex, bool is_init) +-{ +- unsigned long ret = 0; +- unsigned int i, j; +- Elf_Sym *syms; +- +- /* Everything marked ALLOC (this includes the exported symbols) */ +- for (i = 1; i < hdr->e_shnum; ++i) { +- unsigned int info = sechdrs[i].sh_info; +- +- if (sechdrs[i].sh_type != SHT_REL +- && sechdrs[i].sh_type != SHT_RELA) +- continue; +- +- /* Not a valid relocation section? */ +- if (info >= hdr->e_shnum) +- continue; +- +- /* Don't bother with non-allocated sections */ +- if (!(sechdrs[info].sh_flags & SHF_ALLOC)) +- continue; +- +- /* If it's called *.init*, and we're not init, we're +- not interested */ +- if ((strstr(secstrings + sechdrs[i].sh_name, ".init") != 0) +- != is_init) +- continue; +- +- syms = (Elf_Sym *) sechdrs[symindex].sh_addr; +- if (sechdrs[i].sh_type == SHT_REL) { +- Elf_Mips_Rel *rel = (void *) sechdrs[i].sh_addr; +- unsigned int size = sechdrs[i].sh_size / sizeof(*rel); +- +- for (j = 0; j < size; ++j) { +- Elf_Sym *sym; +- +- if (ELF_MIPS_R_TYPE(rel[j]) != R_MIPS_26) +- continue; +- +- sym = syms + ELF_MIPS_R_SYM(rel[j]); +- if (!is_init && sym->st_shndx != SHN_UNDEF) +- continue; +- +- ret += 4 * sizeof(int); +- } +- } else { +- Elf_Mips_Rela *rela = (void *) sechdrs[i].sh_addr; +- unsigned int size = sechdrs[i].sh_size / sizeof(*rela); +- +- for (j = 0; j < size; ++j) { +- Elf_Sym *sym; +- +- if (ELF_MIPS_R_TYPE(rela[j]) != R_MIPS_26) +- continue; +- +- sym = syms + ELF_MIPS_R_SYM(rela[j]); +- if (!is_init && sym->st_shndx != SHN_UNDEF) +- continue; +- +- ret += 4 * sizeof(int); +- } +- } +- } +- +- return ret; +-} +- +-#ifndef MODULE_START +-static void *alloc_phys(unsigned long size) +-{ +- unsigned order; +- struct page *page; +- struct page *p; +- +- size = PAGE_ALIGN(size); +- order = get_order(size); +- +- page = alloc_pages(GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN | +- __GFP_THISNODE, order); +- if (!page) +- return NULL; +- +- split_page(page, order); +- +- for (p = page + (size >> PAGE_SHIFT); p < page + (1 << order); ++p) +- __free_page(p); +- +- return page_address(page); +-} +-#endif +- +-static void free_phys(void *ptr, unsigned long size) +-{ +- struct page *page; +- struct page *end; +- +- page = virt_to_page(ptr); +- end = page + (PAGE_ALIGN(size) >> PAGE_SHIFT); +- +- for (; page < end; ++page) +- __free_page(page); +-} +- + void *module_alloc(unsigned long size) + { + #ifdef MODULE_START +@@ -168,45 +58,16 @@ + + return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL); + #else +- void *ptr; +- + if (size == 0) + return NULL; +- +- ptr = alloc_phys(size); +- +- /* If we failed to allocate physically contiguous memory, +- * fall back to regular vmalloc. The module loader code will +- * create jump tables to handle long jumps */ +- if (!ptr) +- return vmalloc(size); +- +- return ptr; +-#endif +-} +- +-static inline bool is_phys_addr(void *ptr) +-{ +-#ifdef CONFIG_64BIT +- return (KSEGX((unsigned long)ptr) == CKSEG0); +-#else +- return (KSEGX(ptr) == KSEG0); ++ return vmalloc(size); + #endif + } + + /* Free memory returned from module_alloc */ + void module_free(struct module *mod, void *module_region) + { +- if (is_phys_addr(module_region)) { +- if (mod->module_init == module_region) +- free_phys(module_region, mod->init_size); +- else if (mod->module_core == module_region) +- free_phys(module_region, mod->core_size); +- else +- BUG(); +- } else { +- vfree(module_region); +- } ++ vfree(module_region); + /* FIXME: If module_region == mod->init_region, trim exception + table entries. */ + } +@@ -214,24 +75,6 @@ + int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs, + char *secstrings, struct module *mod) + { +- unsigned int symindex = 0; +- unsigned int core_size, init_size; +- int i; +- +- for (i = 1; i < hdr->e_shnum; i++) +- if (sechdrs[i].sh_type == SHT_SYMTAB) +- symindex = i; +- +- core_size = get_plt_size(hdr, sechdrs, secstrings, symindex, false); +- init_size = get_plt_size(hdr, sechdrs, secstrings, symindex, true); +- +- mod->arch.core_plt_offset = 0; +- mod->arch.core_plt_size = core_size; +- mod->arch.init_plt_offset = core_size; +- mod->arch.plt_tbl = kmalloc(core_size + init_size, GFP_KERNEL); +- if (!mod->arch.plt_tbl) +- return -ENOMEM; +- + return 0; + } + +@@ -254,41 +97,27 @@ + return 0; + } + +-static Elf_Addr add_plt_entry_to(unsigned *plt_offset, +- void *start, Elf_Addr v) ++static int apply_r_mips_26_rel(struct module *me, u32 *location, Elf_Addr v) + { +- unsigned *tramp = start + *plt_offset; +- +- *plt_offset += 4 * sizeof(int); +- +- /* adjust carry for addiu */ +- if (v & 0x00008000) +- v += 0x10000; +- +- tramp[0] = 0x3c190000 | (v >> 16); /* lui t9, hi16 */ +- tramp[1] = 0x27390000 | (v & 0xffff); /* addiu t9, t9, lo16 */ +- tramp[2] = 0x03200008; /* jr t9 */ +- tramp[3] = 0x00000000; /* nop */ +- +- return (Elf_Addr) tramp; +-} ++ if (v % 4) { ++ printk(KERN_ERR "module %s: dangerous relocation\n", me->name); ++ return -ENOEXEC; ++ } + +-static Elf_Addr add_plt_entry(struct module *me, void *location, Elf_Addr v) +-{ +- if (location >= me->module_core && +- location < me->module_core + me->core_size) +- return add_plt_entry_to(&me->arch.core_plt_offset, +- me->arch.plt_tbl, v); ++ if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) { ++ printk(KERN_ERR ++ "module %s: relocation overflow\n", ++ me->name); ++ return -ENOEXEC; ++ } + +- if (location >= me->module_init && +- location < me->module_init + me->init_size) +- return add_plt_entry_to(&me->arch.init_plt_offset, +- me->arch.plt_tbl, v); ++ *location = (*location & ~0x03ffffff) | ++ ((*location + (v >> 2)) & 0x03ffffff); + + return 0; + } + +-static int set_r_mips_26(struct module *me, u32 *location, u32 ofs, Elf_Addr v) ++static int apply_r_mips_26_rela(struct module *me, u32 *location, Elf_Addr v) + { + if (v % 4) { + printk(KERN_ERR "module %s: dangerous relocation\n", me->name); +@@ -296,31 +125,17 @@ + } + + if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) { +- v = add_plt_entry(me, location, v + (ofs << 2)); +- if (!v) { +- printk(KERN_ERR ++ printk(KERN_ERR + "module %s: relocation overflow\n", + me->name); +- return -ENOEXEC; +- } +- ofs = 0; ++ return -ENOEXEC; + } + +- *location = (*location & ~0x03ffffff) | ((ofs + (v >> 2)) & 0x03ffffff); ++ *location = (*location & ~0x03ffffff) | ((v >> 2) & 0x03ffffff); + + return 0; + } + +-static int apply_r_mips_26_rel(struct module *me, u32 *location, Elf_Addr v) +-{ +- return set_r_mips_26(me, location, *location & 0x03ffffff, v); +-} +- +-static int apply_r_mips_26_rela(struct module *me, u32 *location, Elf_Addr v) +-{ +- return set_r_mips_26(me, location, 0, v); +-} +- + static int apply_r_mips_hi16_rel(struct module *me, u32 *location, Elf_Addr v) + { + struct mips_hi16 *n; +@@ -585,23 +400,11 @@ + list_add(&me->arch.dbe_list, &dbe_list); + spin_unlock_irq(&dbe_lock); + } +- +- /* Get rid of the fixup trampoline if we're running the module +- * from physically mapped address space */ +- if (me->arch.core_plt_offset == 0 && +- me->arch.init_plt_offset == me->arch.core_plt_size && +- is_phys_addr(me->module_core)) { +- kfree(me->arch.plt_tbl); +- me->arch.plt_tbl = NULL; +- } +- + return 0; + } + + void module_arch_cleanup(struct module *mod) + { +- if (mod->arch.plt_tbl) +- kfree(mod->arch.plt_tbl); + spin_lock_irq(&dbe_lock); + list_del(&mod->arch.dbe_list); + spin_unlock_irq(&dbe_lock); |