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-rw-r--r--arch/sparc/kernel/module.c140
1 files changed, 116 insertions, 24 deletions
diff --git a/arch/sparc/kernel/module.c b/arch/sparc/kernel/module.c
index 598682f31ebf..90273765e81f 100644
--- a/arch/sparc/kernel/module.c
+++ b/arch/sparc/kernel/module.c
@@ -1,4 +1,4 @@
-/* Kernel module help for sparc32.
+/* Kernel module help for sparc64.
*
* Copyright (C) 2001 Rusty Russell.
* Copyright (C) 2002 David S. Miller.
@@ -11,6 +11,48 @@
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/ctype.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+
+#include <asm/processor.h>
+#include <asm/spitfire.h>
+
+#ifdef CONFIG_SPARC64
+static void *module_map(unsigned long size)
+{
+ struct vm_struct *area;
+
+ size = PAGE_ALIGN(size);
+ if (!size || size > MODULES_LEN)
+ return NULL;
+
+ area = __get_vm_area(size, VM_ALLOC, MODULES_VADDR, MODULES_END);
+ if (!area)
+ return NULL;
+
+ return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL);
+}
+
+static char *dot2underscore(char *name)
+{
+ return name;
+}
+#else
+static void *module_map(unsigned long size)
+{
+ return vmalloc(size);
+}
+
+/* Replace references to .func with _Func */
+static char *dot2underscore(char *name)
+{
+ if (name[0] == '.') {
+ name[0] = '_';
+ name[1] = toupper(name[1]);
+ }
+ return name;
+}
+#endif /* CONFIG_SPARC64 */
void *module_alloc(unsigned long size)
{
@@ -20,7 +62,7 @@ void *module_alloc(unsigned long size)
if (size == 0)
return NULL;
- ret = vmalloc(size);
+ ret = module_map(size);
if (!ret)
ret = ERR_PTR(-ENOMEM);
else
@@ -37,16 +79,14 @@ void module_free(struct module *mod, void *module_region)
table entries. */
}
-/* Make generic code ignore STT_REGISTER dummy undefined symbols,
- * and replace references to .func with _Func
- */
+/* Make generic code ignore STT_REGISTER dummy undefined symbols. */
int module_frob_arch_sections(Elf_Ehdr *hdr,
Elf_Shdr *sechdrs,
char *secstrings,
struct module *mod)
{
unsigned int symidx;
- Elf32_Sym *sym;
+ Elf_Sym *sym;
char *strtab;
int i;
@@ -56,26 +96,23 @@ int module_frob_arch_sections(Elf_Ehdr *hdr,
return -ENOEXEC;
}
}
- sym = (Elf32_Sym *)sechdrs[symidx].sh_addr;
+ sym = (Elf_Sym *)sechdrs[symidx].sh_addr;
strtab = (char *)sechdrs[sechdrs[symidx].sh_link].sh_addr;
for (i = 1; i < sechdrs[symidx].sh_size / sizeof(Elf_Sym); i++) {
if (sym[i].st_shndx == SHN_UNDEF) {
- if (ELF32_ST_TYPE(sym[i].st_info) == STT_REGISTER)
+ if (ELF_ST_TYPE(sym[i].st_info) == STT_REGISTER) {
sym[i].st_shndx = SHN_ABS;
- else {
+ } else {
char *name = strtab + sym[i].st_name;
- if (name[0] == '.') {
- name[0] = '_';
- name[1] = toupper(name[1]);
- }
+ dot2underscore(name);
}
}
}
return 0;
}
-int apply_relocate(Elf32_Shdr *sechdrs,
+int apply_relocate(Elf_Shdr *sechdrs,
const char *strtab,
unsigned int symindex,
unsigned int relsec,
@@ -86,32 +123,68 @@ int apply_relocate(Elf32_Shdr *sechdrs,
return -ENOEXEC;
}
-int apply_relocate_add(Elf32_Shdr *sechdrs,
+int apply_relocate_add(Elf_Shdr *sechdrs,
const char *strtab,
unsigned int symindex,
unsigned int relsec,
struct module *me)
{
unsigned int i;
- Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
- Elf32_Sym *sym;
+ Elf_Rela *rel = (void *)sechdrs[relsec].sh_addr;
+ Elf_Sym *sym;
u8 *location;
u32 *loc32;
for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
- Elf32_Addr v;
+ Elf_Addr v;
/* This is where to make the change */
location = (u8 *)sechdrs[sechdrs[relsec].sh_info].sh_addr
+ rel[i].r_offset;
loc32 = (u32 *) location;
+
+#ifdef CONFIG_SPARC64
+ BUG_ON(((u64)location >> (u64)32) != (u64)0);
+#endif /* CONFIG_SPARC64 */
+
/* This is the symbol it is referring to. Note that all
undefined symbols have been resolved. */
- sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
- + ELF32_R_SYM(rel[i].r_info);
+ sym = (Elf_Sym *)sechdrs[symindex].sh_addr
+ + ELF_R_SYM(rel[i].r_info);
v = sym->st_value + rel[i].r_addend;
- switch (ELF32_R_TYPE(rel[i].r_info)) {
+ switch (ELF_R_TYPE(rel[i].r_info) & 0xff) {
+#ifdef CONFIG_SPARC64
+ case R_SPARC_64:
+ location[0] = v >> 56;
+ location[1] = v >> 48;
+ location[2] = v >> 40;
+ location[3] = v >> 32;
+ location[4] = v >> 24;
+ location[5] = v >> 16;
+ location[6] = v >> 8;
+ location[7] = v >> 0;
+ break;
+
+ case R_SPARC_DISP32:
+ v -= (Elf_Addr) location;
+ *loc32 = v;
+ break;
+
+ case R_SPARC_WDISP19:
+ v -= (Elf_Addr) location;
+ *loc32 = (*loc32 & ~0x7ffff) |
+ ((v >> 2) & 0x7ffff);
+ break;
+
+ case R_SPARC_OLO10:
+ *loc32 = (*loc32 & ~0x1fff) |
+ (((v & 0x3ff) +
+ (ELF_R_TYPE(rel[i].r_info) >> 8))
+ & 0x1fff);
+ break;
+#endif /* CONFIG_SPARC64 */
+
case R_SPARC_32:
case R_SPARC_UA32:
location[0] = v >> 24;
@@ -121,13 +194,13 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
break;
case R_SPARC_WDISP30:
- v -= (Elf32_Addr) location;
+ v -= (Elf_Addr) location;
*loc32 = (*loc32 & ~0x3fffffff) |
((v >> 2) & 0x3fffffff);
break;
case R_SPARC_WDISP22:
- v -= (Elf32_Addr) location;
+ v -= (Elf_Addr) location;
*loc32 = (*loc32 & ~0x3fffff) |
((v >> 2) & 0x3fffff);
break;
@@ -144,19 +217,38 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
default:
printk(KERN_ERR "module %s: Unknown relocation: %x\n",
me->name,
- (int) (ELF32_R_TYPE(rel[i].r_info) & 0xff));
+ (int) (ELF_R_TYPE(rel[i].r_info) & 0xff));
return -ENOEXEC;
};
}
return 0;
}
+#ifdef CONFIG_SPARC64
int module_finalize(const Elf_Ehdr *hdr,
const Elf_Shdr *sechdrs,
struct module *me)
{
+ /* Cheetah's I-cache is fully coherent. */
+ if (tlb_type == spitfire) {
+ unsigned long va;
+
+ flushw_all();
+ for (va = 0; va < (PAGE_SIZE << 1); va += 32)
+ spitfire_put_icache_tag(va, 0x0);
+ __asm__ __volatile__("flush %g6");
+ }
+
return 0;
}
+#else
+int module_finalize(const Elf_Ehdr *hdr,
+ const Elf_Shdr *sechdrs,
+ struct module *me)
+{
+ return 0;
+}
+#endif /* CONFIG_SPARC64 */
void module_arch_cleanup(struct module *mod)
{
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.