diff options
Diffstat (limited to 'arch/sh/kernel/module.c')
| -rw-r--r-- | arch/sh/kernel/module.c | 62 |
1 files changed, 49 insertions, 13 deletions
diff --git a/arch/sh/kernel/module.c b/arch/sh/kernel/module.c index 142a4e5b7eb..b3d0a03b4c7 100644 --- a/arch/sh/kernel/module.c +++ b/arch/sh/kernel/module.c @@ -1,5 +1,15 @@ /* Kernel module help for SH. + SHcompact version by Kaz Kojima and Paul Mundt. + + SHmedia bits: + + Copyright 2004 SuperH (UK) Ltd + Author: Richard Curnow + + Based on the sh version, and on code from the sh64-specific parts of + modutils, originally written by Richard Curnow and Ben Gaster. + 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 @@ -21,12 +31,6 @@ #include <linux/string.h> #include <linux/kernel.h> -#if 0 -#define DEBUGP printk -#else -#define DEBUGP(fmt...) -#endif - void *module_alloc(unsigned long size) { if (size == 0) @@ -52,6 +56,7 @@ int module_frob_arch_sections(Elf_Ehdr *hdr, return 0; } +#ifdef CONFIG_SUPERH32 #define COPY_UNALIGNED_WORD(sw, tw, align) \ { \ void *__s = &(sw), *__t = &(tw); \ @@ -74,6 +79,10 @@ int module_frob_arch_sections(Elf_Ehdr *hdr, break; \ } \ } +#else +/* One thing SHmedia doesn't screw up! */ +#define COPY_UNALIGNED_WORD(sw, tw, align) { (tw) = (sw); } +#endif int apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab, @@ -89,8 +98,8 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, uint32_t value; int align; - DEBUGP("Applying relocate section %u to %u\n", relsec, - sechdrs[relsec].sh_info); + pr_debug("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 @@ -102,17 +111,44 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, relocation = sym->st_value + rel[i].r_addend; align = (int)location & 3; +#ifdef CONFIG_SUPERH64 + /* For text addresses, bit2 of the st_other field indicates + * whether the symbol is SHmedia (1) or SHcompact (0). If + * SHmedia, the LSB of the symbol needs to be asserted + * for the CPU to be in SHmedia mode when it starts executing + * the branch target. */ + relocation |= (sym->st_other & 4); +#endif + switch (ELF32_R_TYPE(rel[i].r_info)) { case R_SH_DIR32: - COPY_UNALIGNED_WORD (*location, value, align); + COPY_UNALIGNED_WORD (*location, value, align); value += relocation; - COPY_UNALIGNED_WORD (value, *location, align); + COPY_UNALIGNED_WORD (value, *location, align); break; case R_SH_REL32: - relocation = (relocation - (Elf32_Addr) location); - COPY_UNALIGNED_WORD (*location, value, align); + relocation = (relocation - (Elf32_Addr) location); + COPY_UNALIGNED_WORD (*location, value, align); value += relocation; - COPY_UNALIGNED_WORD (value, *location, align); + COPY_UNALIGNED_WORD (value, *location, align); + break; + case R_SH_IMM_LOW16: + *location = (*location & ~0x3fffc00) | + ((relocation & 0xffff) << 10); + break; + case R_SH_IMM_MEDLOW16: + *location = (*location & ~0x3fffc00) | + (((relocation >> 16) & 0xffff) << 10); + break; + case R_SH_IMM_LOW16_PCREL: + relocation -= (Elf32_Addr) location; + *location = (*location & ~0x3fffc00) | + ((relocation & 0xffff) << 10); + break; + case R_SH_IMM_MEDLOW16_PCREL: + relocation -= (Elf32_Addr) location; + *location = (*location & ~0x3fffc00) | + (((relocation >> 16) & 0xffff) << 10); break; default: printk(KERN_ERR "module %s: Unknown relocation: %u\n", |