sound: seq_midi_event: fix decoding of (N)RPN events
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / arch / sparc / kernel / module.c
blob90273765e81f95b7d07250fe35dc29cc5d122ecc
1 /* Kernel module help for sparc64.
3 * Copyright (C) 2001 Rusty Russell.
4 * Copyright (C) 2002 David S. Miller.
5 */
7 #include <linux/moduleloader.h>
8 #include <linux/kernel.h>
9 #include <linux/elf.h>
10 #include <linux/vmalloc.h>
11 #include <linux/fs.h>
12 #include <linux/string.h>
13 #include <linux/ctype.h>
14 #include <linux/slab.h>
15 #include <linux/mm.h>
17 #include <asm/processor.h>
18 #include <asm/spitfire.h>
20 #ifdef CONFIG_SPARC64
21 static void *module_map(unsigned long size)
23 struct vm_struct *area;
25 size = PAGE_ALIGN(size);
26 if (!size || size > MODULES_LEN)
27 return NULL;
29 area = __get_vm_area(size, VM_ALLOC, MODULES_VADDR, MODULES_END);
30 if (!area)
31 return NULL;
33 return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL);
36 static char *dot2underscore(char *name)
38 return name;
40 #else
41 static void *module_map(unsigned long size)
43 return vmalloc(size);
46 /* Replace references to .func with _Func */
47 static char *dot2underscore(char *name)
49 if (name[0] == '.') {
50 name[0] = '_';
51 name[1] = toupper(name[1]);
53 return name;
55 #endif /* CONFIG_SPARC64 */
57 void *module_alloc(unsigned long size)
59 void *ret;
61 /* We handle the zero case fine, unlike vmalloc */
62 if (size == 0)
63 return NULL;
65 ret = module_map(size);
66 if (!ret)
67 ret = ERR_PTR(-ENOMEM);
68 else
69 memset(ret, 0, size);
71 return ret;
74 /* Free memory returned from module_core_alloc/module_init_alloc */
75 void module_free(struct module *mod, void *module_region)
77 vfree(module_region);
78 /* FIXME: If module_region == mod->init_region, trim exception
79 table entries. */
82 /* Make generic code ignore STT_REGISTER dummy undefined symbols. */
83 int module_frob_arch_sections(Elf_Ehdr *hdr,
84 Elf_Shdr *sechdrs,
85 char *secstrings,
86 struct module *mod)
88 unsigned int symidx;
89 Elf_Sym *sym;
90 char *strtab;
91 int i;
93 for (symidx = 0; sechdrs[symidx].sh_type != SHT_SYMTAB; symidx++) {
94 if (symidx == hdr->e_shnum-1) {
95 printk("%s: no symtab found.\n", mod->name);
96 return -ENOEXEC;
99 sym = (Elf_Sym *)sechdrs[symidx].sh_addr;
100 strtab = (char *)sechdrs[sechdrs[symidx].sh_link].sh_addr;
102 for (i = 1; i < sechdrs[symidx].sh_size / sizeof(Elf_Sym); i++) {
103 if (sym[i].st_shndx == SHN_UNDEF) {
104 if (ELF_ST_TYPE(sym[i].st_info) == STT_REGISTER) {
105 sym[i].st_shndx = SHN_ABS;
106 } else {
107 char *name = strtab + sym[i].st_name;
108 dot2underscore(name);
112 return 0;
115 int apply_relocate(Elf_Shdr *sechdrs,
116 const char *strtab,
117 unsigned int symindex,
118 unsigned int relsec,
119 struct module *me)
121 printk(KERN_ERR "module %s: non-ADD RELOCATION unsupported\n",
122 me->name);
123 return -ENOEXEC;
126 int apply_relocate_add(Elf_Shdr *sechdrs,
127 const char *strtab,
128 unsigned int symindex,
129 unsigned int relsec,
130 struct module *me)
132 unsigned int i;
133 Elf_Rela *rel = (void *)sechdrs[relsec].sh_addr;
134 Elf_Sym *sym;
135 u8 *location;
136 u32 *loc32;
138 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
139 Elf_Addr v;
141 /* This is where to make the change */
142 location = (u8 *)sechdrs[sechdrs[relsec].sh_info].sh_addr
143 + rel[i].r_offset;
144 loc32 = (u32 *) location;
146 #ifdef CONFIG_SPARC64
147 BUG_ON(((u64)location >> (u64)32) != (u64)0);
148 #endif /* CONFIG_SPARC64 */
150 /* This is the symbol it is referring to. Note that all
151 undefined symbols have been resolved. */
152 sym = (Elf_Sym *)sechdrs[symindex].sh_addr
153 + ELF_R_SYM(rel[i].r_info);
154 v = sym->st_value + rel[i].r_addend;
156 switch (ELF_R_TYPE(rel[i].r_info) & 0xff) {
157 #ifdef CONFIG_SPARC64
158 case R_SPARC_64:
159 location[0] = v >> 56;
160 location[1] = v >> 48;
161 location[2] = v >> 40;
162 location[3] = v >> 32;
163 location[4] = v >> 24;
164 location[5] = v >> 16;
165 location[6] = v >> 8;
166 location[7] = v >> 0;
167 break;
169 case R_SPARC_DISP32:
170 v -= (Elf_Addr) location;
171 *loc32 = v;
172 break;
174 case R_SPARC_WDISP19:
175 v -= (Elf_Addr) location;
176 *loc32 = (*loc32 & ~0x7ffff) |
177 ((v >> 2) & 0x7ffff);
178 break;
180 case R_SPARC_OLO10:
181 *loc32 = (*loc32 & ~0x1fff) |
182 (((v & 0x3ff) +
183 (ELF_R_TYPE(rel[i].r_info) >> 8))
184 & 0x1fff);
185 break;
186 #endif /* CONFIG_SPARC64 */
188 case R_SPARC_32:
189 case R_SPARC_UA32:
190 location[0] = v >> 24;
191 location[1] = v >> 16;
192 location[2] = v >> 8;
193 location[3] = v >> 0;
194 break;
196 case R_SPARC_WDISP30:
197 v -= (Elf_Addr) location;
198 *loc32 = (*loc32 & ~0x3fffffff) |
199 ((v >> 2) & 0x3fffffff);
200 break;
202 case R_SPARC_WDISP22:
203 v -= (Elf_Addr) location;
204 *loc32 = (*loc32 & ~0x3fffff) |
205 ((v >> 2) & 0x3fffff);
206 break;
208 case R_SPARC_LO10:
209 *loc32 = (*loc32 & ~0x3ff) | (v & 0x3ff);
210 break;
212 case R_SPARC_HI22:
213 *loc32 = (*loc32 & ~0x3fffff) |
214 ((v >> 10) & 0x3fffff);
215 break;
217 default:
218 printk(KERN_ERR "module %s: Unknown relocation: %x\n",
219 me->name,
220 (int) (ELF_R_TYPE(rel[i].r_info) & 0xff));
221 return -ENOEXEC;
224 return 0;
227 #ifdef CONFIG_SPARC64
228 int module_finalize(const Elf_Ehdr *hdr,
229 const Elf_Shdr *sechdrs,
230 struct module *me)
232 /* Cheetah's I-cache is fully coherent. */
233 if (tlb_type == spitfire) {
234 unsigned long va;
236 flushw_all();
237 for (va = 0; va < (PAGE_SIZE << 1); va += 32)
238 spitfire_put_icache_tag(va, 0x0);
239 __asm__ __volatile__("flush %g6");
242 return 0;
244 #else
245 int module_finalize(const Elf_Ehdr *hdr,
246 const Elf_Shdr *sechdrs,
247 struct module *me)
249 return 0;
251 #endif /* CONFIG_SPARC64 */
253 void module_arch_cleanup(struct module *mod)