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author | Ingo Molnar <mingo@kernel.org> | 2018-04-05 09:20:34 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2018-04-05 09:20:34 +0200 |
commit | ea2a6af517714c52a1209795a03e863e96b460bb (patch) | |
tree | 3bd443bc9b23ceeaf3743eaf2d6d35ec63c620c9 /arch/m32r/kernel/module.c | |
parent | sched/cpufreq/schedutil: Fix error path mutex unlock (diff) | |
parent | Merge branch 'syscalls-next' of git://git.kernel.org/pub/scm/linux/kernel/git... (diff) | |
download | linux-ea2a6af517714c52a1209795a03e863e96b460bb.tar.xz linux-ea2a6af517714c52a1209795a03e863e96b460bb.zip |
Merge branch 'linus' into sched/urgent, to pick up fixes and updates
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/m32r/kernel/module.c')
-rw-r--r-- | arch/m32r/kernel/module.c | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/arch/m32r/kernel/module.c b/arch/m32r/kernel/module.c deleted file mode 100644 index 38233b6596b6..000000000000 --- a/arch/m32r/kernel/module.c +++ /dev/null @@ -1,203 +0,0 @@ -/* Kernel module help for M32R. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -*/ - -#include <linux/moduleloader.h> -#include <linux/elf.h> -#include <linux/vmalloc.h> -#include <linux/fs.h> -#include <linux/string.h> -#include <linux/kernel.h> - -#if 0 -#define DEBUGP printk -#else -#define DEBUGP(fmt...) -#endif - -#define COPY_UNALIGNED_WORD(sw, tw, align) \ -{ \ - void *__s = &(sw), *__t = &(tw); \ - unsigned short *__s2 = __s, *__t2 =__t; \ - unsigned char *__s1 = __s, *__t1 =__t; \ - switch ((align)) \ - { \ - case 0: \ - *(unsigned long *) __t = *(unsigned long *) __s; \ - break; \ - case 2: \ - *__t2++ = *__s2++; \ - *__t2 = *__s2; \ - break; \ - default: \ - *__t1++ = *__s1++; \ - *__t1++ = *__s1++; \ - *__t1++ = *__s1++; \ - *__t1 = *__s1; \ - break; \ - } \ -} - -#define COPY_UNALIGNED_HWORD(sw, tw, align) \ - { \ - void *__s = &(sw), *__t = &(tw); \ - unsigned short *__s2 = __s, *__t2 =__t; \ - unsigned char *__s1 = __s, *__t1 =__t; \ - switch ((align)) \ - { \ - case 0: \ - *__t2 = *__s2; \ - break; \ - default: \ - *__t1++ = *__s1++; \ - *__t1 = *__s1; \ - break; \ - } \ - } - -int apply_relocate_add(Elf32_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; - Elf32_Addr relocation; - uint32_t *location; - uint32_t value; - unsigned short *hlocation; - unsigned short hvalue; - int svalue; - int align; - - DEBUGP("Applying relocate section %u to %u\n", relsec, - sechdrs[relsec].sh_info); - for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { - /* This is where to make the change */ - location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr - + rel[i].r_offset; - /* 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); - relocation = sym->st_value + rel[i].r_addend; - align = (int)location & 3; - - switch (ELF32_R_TYPE(rel[i].r_info)) { - case R_M32R_32_RELA: - COPY_UNALIGNED_WORD (*location, value, align); - value += relocation; - COPY_UNALIGNED_WORD (value, *location, align); - break; - case R_M32R_HI16_ULO_RELA: - COPY_UNALIGNED_WORD (*location, value, align); - relocation = (relocation >>16) & 0xffff; - /* RELA must has 0 at relocation field. */ - value += relocation; - COPY_UNALIGNED_WORD (value, *location, align); - break; - case R_M32R_HI16_SLO_RELA: - COPY_UNALIGNED_WORD (*location, value, align); - if (relocation & 0x8000) relocation += 0x10000; - relocation = (relocation >>16) & 0xffff; - /* RELA must has 0 at relocation field. */ - value += relocation; - COPY_UNALIGNED_WORD (value, *location, align); - break; - case R_M32R_16_RELA: - hlocation = (unsigned short *)location; - relocation = relocation & 0xffff; - /* RELA must has 0 at relocation field. */ - hvalue = relocation; - COPY_UNALIGNED_WORD (hvalue, *hlocation, align); - break; - case R_M32R_SDA16_RELA: - case R_M32R_LO16_RELA: - COPY_UNALIGNED_WORD (*location, value, align); - relocation = relocation & 0xffff; - /* RELA must has 0 at relocation field. */ - value += relocation; - COPY_UNALIGNED_WORD (value, *location, align); - break; - case R_M32R_24_RELA: - COPY_UNALIGNED_WORD (*location, value, align); - relocation = relocation & 0xffffff; - /* RELA must has 0 at relocation field. */ - value += relocation; - COPY_UNALIGNED_WORD (value, *location, align); - break; - case R_M32R_18_PCREL_RELA: - relocation = (relocation - (Elf32_Addr) location); - if (relocation < -0x20000 || 0x1fffc < relocation) - { - printk(KERN_ERR "module %s: relocation overflow: %u\n", - me->name, relocation); - return -ENOEXEC; - } - COPY_UNALIGNED_WORD (*location, value, align); - if (value & 0xffff) - { - /* RELA must has 0 at relocation field. */ - printk(KERN_ERR "module %s: illegal relocation field: %u\n", - me->name, value); - return -ENOEXEC; - } - relocation = (relocation >> 2) & 0xffff; - value += relocation; - COPY_UNALIGNED_WORD (value, *location, align); - break; - case R_M32R_10_PCREL_RELA: - hlocation = (unsigned short *)location; - relocation = (relocation - (Elf32_Addr) location); - COPY_UNALIGNED_HWORD (*hlocation, hvalue, align); - svalue = (int)hvalue; - svalue = (signed char)svalue << 2; - relocation += svalue; - relocation = (relocation >> 2) & 0xff; - hvalue = hvalue & 0xff00; - hvalue += relocation; - COPY_UNALIGNED_HWORD (hvalue, *hlocation, align); - break; - case R_M32R_26_PCREL_RELA: - relocation = (relocation - (Elf32_Addr) location); - if (relocation < -0x2000000 || 0x1fffffc < relocation) - { - printk(KERN_ERR "module %s: relocation overflow: %u\n", - me->name, relocation); - return -ENOEXEC; - } - COPY_UNALIGNED_WORD (*location, value, align); - if (value & 0xffffff) - { - /* RELA must has 0 at relocation field. */ - printk(KERN_ERR "module %s: illegal relocation field: %u\n", - me->name, value); - return -ENOEXEC; - } - relocation = (relocation >> 2) & 0xffffff; - value += relocation; - COPY_UNALIGNED_WORD (value, *location, align); - break; - default: - printk(KERN_ERR "module %s: Unknown relocation: %u\n", - me->name, ELF32_R_TYPE(rel[i].r_info)); - return -ENOEXEC; - } - } - return 0; -} |