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-rw-r--r--target/linux/cobalt/patches/001-no_module_reloc.patch128
1 files changed, 84 insertions, 44 deletions
diff --git a/target/linux/cobalt/patches/001-no_module_reloc.patch b/target/linux/cobalt/patches/001-no_module_reloc.patch
index b6604ea..449bda7 100644
--- a/target/linux/cobalt/patches/001-no_module_reloc.patch
+++ b/target/linux/cobalt/patches/001-no_module_reloc.patch
@@ -1,6 +1,7 @@
---- a/arch/mips/Makefile
-+++ b/arch/mips/Makefile
-@@ -83,7 +83,7 @@ all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64
+diff -urN linux-2.6.30.10/arch/mips/Makefile linux-2.6.30.10.new//arch/mips/Makefile
+--- linux-2.6.30.10/arch/mips/Makefile 2010-01-29 16:12:01.000000000 +0100
++++ linux-2.6.30.10.new//arch/mips/Makefile 2009-12-04 07:00:07.000000000 +0100
+@@ -83,7 +83,7 @@
cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
cflags-y += -msoft-float
LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
@@ -9,23 +10,25 @@
cflags-y += -ffreestanding
---- a/arch/mips/include/asm/module.h
-+++ b/arch/mips/include/asm/module.h
-@@ -9,11 +9,6 @@ struct mod_arch_specific {
+diff -urN linux-2.6.30.10/arch/mips/include/asm/module.h linux-2.6.30.10.new//arch/mips/include/asm/module.h
+--- linux-2.6.30.10/arch/mips/include/asm/module.h 2010-01-29 16:12:01.000000000 +0100
++++ linux-2.6.30.10.new//arch/mips/include/asm/module.h 2009-12-04 07:00:07.000000000 +0100
+@@ -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;
+- void *phys_plt_tbl;
+- void *virt_plt_tbl;
+- unsigned int phys_plt_offset;
+- unsigned int virt_plt_offset;
};
typedef uint8_t Elf64_Byte; /* Type for a 8-bit quantity. */
---- a/arch/mips/kernel/module.c
-+++ b/arch/mips/kernel/module.c
-@@ -43,116 +43,6 @@ static struct mips_hi16 *mips_hi16_list;
+diff -urN linux-2.6.30.10/arch/mips/kernel/module.c linux-2.6.30.10.new//arch/mips/kernel/module.c
+--- linux-2.6.30.10/arch/mips/kernel/module.c 2010-01-29 16:12:01.000000000 +0100
++++ linux-2.6.30.10.new//arch/mips/kernel/module.c 2009-12-04 07:00:07.000000000 +0100
+@@ -43,116 +43,6 @@
static LIST_HEAD(dbe_list);
static DEFINE_SPINLOCK(dbe_lock);
@@ -142,7 +145,7 @@
void *module_alloc(unsigned long size)
{
#ifdef MODULE_START
-@@ -168,45 +58,16 @@ void *module_alloc(unsigned long size)
+@@ -168,101 +58,23 @@
return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL);
#else
@@ -190,7 +193,26 @@
/* FIXME: If module_region == mod->init_region, trim exception
table entries. */
}
-@@ -214,24 +75,6 @@ void module_free(struct module *mod, voi
+
+-static void *__module_alloc(int size, bool phys)
+-{
+- void *ptr;
+-
+- if (phys)
+- ptr = kmalloc(size, GFP_KERNEL);
+- else
+- ptr = vmalloc(size);
+- return ptr;
+-}
+-
+-static void __module_free(void *ptr)
+-{
+- if (is_phys_addr(ptr))
+- kfree(ptr);
+- else
+- vfree(ptr);
+-}
+-
int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
char *secstrings, struct module *mod)
{
@@ -205,17 +227,29 @@
- 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)
+- mod->arch.phys_plt_offset = 0;
+- mod->arch.virt_plt_offset = 0;
+- mod->arch.phys_plt_tbl = NULL;
+- mod->arch.virt_plt_tbl = NULL;
+-
+- if ((core_size + init_size) == 0)
+- return 0;
+-
+- mod->arch.phys_plt_tbl = __module_alloc(core_size + init_size, 1);
+- if (!mod->arch.phys_plt_tbl)
- return -ENOMEM;
-
+- mod->arch.virt_plt_tbl = __module_alloc(core_size + init_size, 0);
+- if (!mod->arch.virt_plt_tbl) {
+- __module_free(mod->arch.phys_plt_tbl);
+- mod->arch.phys_plt_tbl = NULL;
+- return -ENOMEM;
+- }
+-
return 0;
}
-@@ -254,41 +97,27 @@ static int apply_r_mips_32_rela(struct m
+@@ -285,37 +97,27 @@
return 0;
}
@@ -235,20 +269,13 @@
- 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);
+- return (Elf_Addr) tramp;
+-}
+ if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) {
+ printk(KERN_ERR
+ "module %s: relocation overflow\n",
@@ -256,14 +283,18 @@
+ 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);
+-static Elf_Addr add_plt_entry(struct module *me, void *location, Elf_Addr v)
+-{
+- if (is_phys_addr(location))
+- return add_plt_entry_to(&me->arch.phys_plt_offset,
+- me->arch.phys_plt_tbl, v);
+- else
+- return add_plt_entry_to(&me->arch.virt_plt_offset,
+- me->arch.virt_plt_tbl, v);
+ *location = (*location & ~0x03ffffff) |
+ ((*location + (v >> 2)) & 0x03ffffff);
- return 0;
++ return 0;
}
-static int set_r_mips_26(struct module *me, u32 *location, u32 ofs, Elf_Addr v)
@@ -271,7 +302,7 @@
{
if (v % 4) {
printk(KERN_ERR "module %s: dangerous relocation\n", me->name);
-@@ -296,31 +125,17 @@ static int set_r_mips_26(struct module *
+@@ -323,31 +125,17 @@
}
if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) {
@@ -306,18 +337,20 @@
static int apply_r_mips_hi16_rel(struct module *me, u32 *location, Elf_Addr v)
{
struct mips_hi16 *n;
-@@ -585,23 +400,11 @@ int module_finalize(const Elf_Ehdr *hdr,
+@@ -612,32 +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;
+- if (me->arch.phys_plt_offset == 0) {
+- __module_free(me->arch.phys_plt_tbl);
+- me->arch.phys_plt_tbl = NULL;
+- }
+- if (me->arch.virt_plt_offset == 0) {
+- __module_free(me->arch.virt_plt_tbl);
+- me->arch.virt_plt_tbl = NULL;
- }
-
return 0;
@@ -325,8 +358,15 @@
void module_arch_cleanup(struct module *mod)
{
-- if (mod->arch.plt_tbl)
-- kfree(mod->arch.plt_tbl);
+- if (mod->arch.phys_plt_tbl) {
+- __module_free(mod->arch.phys_plt_tbl);
+- mod->arch.phys_plt_tbl = NULL;
+- }
+- if (mod->arch.virt_plt_tbl) {
+- __module_free(mod->arch.virt_plt_tbl);
+- mod->arch.virt_plt_tbl = NULL;
+- }
+-
spin_lock_irq(&dbe_lock);
list_del(&mod->arch.dbe_list);
spin_unlock_irq(&dbe_lock);
generated by cgit v1.1 at 2024-11-09 18:51:42 +0000