-Index: linux-2.6.30.4/arch/mips/Makefile
-===================================================================
---- linux-2.6.30.4.orig/arch/mips/Makefile 2009-08-06 16:02:25.000000000 +0200
-+++ linux-2.6.30.4/arch/mips/Makefile 2009-08-06 16:02:37.000000000 +0200
-@@ -83,7 +83,7 @@
+--- a/arch/mips/Makefile
++++ b/arch/mips/Makefile
+@@ -83,7 +83,7 @@ all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64
cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
cflags-y += -msoft-float
LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
cflags-y += -ffreestanding
-Index: linux-2.6.30.4/arch/mips/include/asm/module.h
-===================================================================
---- linux-2.6.30.4.orig/arch/mips/include/asm/module.h 2009-08-06 16:02:25.000000000 +0200
-+++ linux-2.6.30.4/arch/mips/include/asm/module.h 2009-08-06 16:02:37.000000000 +0200
-@@ -9,6 +9,11 @@
+--- a/arch/mips/include/asm/module.h
++++ b/arch/mips/include/asm/module.h
+@@ -9,6 +9,11 @@ struct mod_arch_specific {
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. */
-Index: linux-2.6.30.4/arch/mips/kernel/module.c
-===================================================================
---- linux-2.6.30.4.orig/arch/mips/kernel/module.c 2009-08-06 16:02:36.000000000 +0200
-+++ linux-2.6.30.4/arch/mips/kernel/module.c 2009-08-06 16:03:15.000000000 +0200
-@@ -43,6 +43,116 @@
+--- a/arch/mips/kernel/module.c
++++ b/arch/mips/kernel/module.c
+@@ -43,6 +43,116 @@ static struct mips_hi16 *mips_hi16_list;
static LIST_HEAD(dbe_list);
static DEFINE_SPINLOCK(dbe_lock);
void *module_alloc(unsigned long size)
{
#ifdef MODULE_START
-@@ -58,16 +168,45 @@
+@@ -58,23 +168,101 @@ void *module_alloc(unsigned long size)
return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL);
#else
/* FIXME: If module_region == mod->init_region, trim exception
table entries. */
}
-@@ -75,6 +214,24 @@
+
++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)
{
+ 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;
}
-@@ -97,27 +254,41 @@
+@@ -97,27 +285,37 @@ static int apply_r_mips_32_rela(struct m
return 0;
}
- return -ENOEXEC;
- }
+ *plt_offset += 4 * sizeof(int);
-+
+
+- *location = (*location & ~0x03ffffff) |
+- ((*location + (v >> 2)) & 0x03ffffff);
+ /* adjust carry for addiu */
+ if (v & 0x00008000)
+ v += 0x10000;
-+
+
+- return 0;
+ 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 */
-
-- *location = (*location & ~0x03ffffff) |
-- ((*location + (v >> 2)) & 0x03ffffff);
-+ return (Elf_Addr) tramp;
-+}
+
-+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 (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);
-
- return 0;
++ return (Elf_Addr) tramp;
}
-static int apply_r_mips_26_rela(struct module *me, u32 *location, Elf_Addr 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);
++
++}
++
+static int set_r_mips_26(struct module *me, u32 *location, u32 ofs, Elf_Addr v)
{
if (v % 4) {
printk(KERN_ERR "module %s: dangerous relocation\n", me->name);
-@@ -125,17 +296,31 @@
+@@ -125,17 +323,31 @@ static int apply_r_mips_26_rela(struct m
}
if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) {
static int apply_r_mips_hi16_rel(struct module *me, u32 *location, Elf_Addr v)
{
struct mips_hi16 *n;
-@@ -400,11 +585,23 @@
+@@ -400,11 +612,32 @@ int module_finalize(const Elf_Ehdr *hdr,
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;
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);
projects / openwrt.git / blobdiff