diff options
Diffstat (limited to 'modutils/insmod.c')
| -rw-r--r-- | modutils/insmod.c | 82 |
1 files changed, 72 insertions, 10 deletions
diff --git a/modutils/insmod.c b/modutils/insmod.c index 84617fa48..c5cab1997 100644 --- a/modutils/insmod.c +++ b/modutils/insmod.c @@ -2,7 +2,7 @@ /* * Mini insmod implementation for busybox * - * This version of insmod supports x86, ARM, SH3/4, powerpc, m68k, + * This version of insmod supports x86, ARM, SH3/4/5, powerpc, m68k, * MIPS, and v850e. * * Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen @@ -19,6 +19,11 @@ * very minor changes required to also work with StrongArm and presumably * all ARM based systems. * + * Paul Mundt <lethal@linux-sh.org> 08-Aug-2003. + * Integrated support for sh64 (SH-5), from preliminary modutils + * patches from Benedict Gaster <benedict.gaster@superh.com>. + * Currently limited to support for 32bit ABI. + * * Magnus Damm <damm@opensource.se> 22-May-2002. * The plt and got code are now using the same structs. * Added generic linked list code to fully support PowerPC. @@ -182,17 +187,18 @@ #define Elf32_RelM Elf32_Rela #define ELFCLASSM ELFCLASS32 -/* the SH changes have only been tested on the SH4 in =little endian= mode */ +/* the SH changes have only been tested in =little endian= mode */ /* I'm not sure about big endian, so let's warn: */ -#if (defined(__SH4__) || defined(__SH3__)) && defined(__BIG_ENDIAN__) -#error insmod.c may require changes for use on big endian SH4/SH3 +#if defined(__sh__) && defined(__BIG_ENDIAN__) +#error insmod.c may require changes for use on big endian SH #endif /* it may or may not work on the SH1/SH2... So let's error on those also */ -#if (defined(__sh__) && (!(defined(__SH3__) || defined(__SH4__)))) -#error insmod.c may require changes for non-SH3/SH4 use +#if ((!(defined(__SH3__) || defined(__SH4__) || defined(__SH5__)))) && \ + (defined(__sh__)) +#error insmod.c may require changes for SH1 or SH2 use #endif #endif @@ -247,7 +253,7 @@ #ifndef MODUTILS_MODULE_H static const int MODUTILS_MODULE_H = 1; -#ident "$Id: insmod.c,v 1.99 2003/07/22 08:56:50 andersen Exp $" +#ident "$Id: insmod.c,v 1.100 2003/08/13 19:56:33 andersen Exp $" /* This file contains the structures used by the 2.0 and 2.1 kernels. We do not use the kernel headers directly because we do not wish @@ -468,7 +474,7 @@ int delete_module(const char *); #ifndef MODUTILS_OBJ_H static const int MODUTILS_OBJ_H = 1; -#ident "$Id: insmod.c,v 1.99 2003/07/22 08:56:50 andersen Exp $" +#ident "$Id: insmod.c,v 1.100 2003/08/13 19:56:33 andersen Exp $" /* The relocatable object is manipulated using elfin types. */ @@ -1201,7 +1207,51 @@ arch_apply_relocation(struct obj_file *f, *loc = v - got; break; -#endif +#if defined(__SH5__) + case R_SH_IMM_MEDLOW16: + case R_SH_IMM_LOW16: + { + Elf32_Addr word; + + if (ELF32_R_TYPE(rel->r_info) == R_SH_IMM_MEDLOW16) + v >>= 16; + + /* + * movi and shori have the format: + * + * | op | imm | reg | reserved | + * 31..26 25..10 9.. 4 3 .. 0 + * + * so we simply mask and or in imm. + */ + word = *loc & ~0x3fffc00; + word |= (v & 0xffff) << 10; + + *loc = word; + + break; + } + + case R_SH_IMM_MEDLOW16_PCREL: + case R_SH_IMM_LOW16_PCREL: + { + Elf32_Addr word; + + word = *loc & ~0x3fffc00; + + v -= dot; + + if (ELF32_R_TYPE(rel->r_info) == R_SH_IMM_MEDLOW16_PCREL) + v >>= 16; + + word |= (v & 0xffff) << 10; + + *loc = word; + + break; + } +#endif /* __SH5__ */ +#endif /* __sh__ */ default: printf("Warning: unhandled reloc %d\n",(int)ELF32_R_TYPE(rel->r_info)); @@ -3470,14 +3520,26 @@ static struct obj_file *obj_load(FILE * fp, int loadprogbits) /* Insert all symbols into the hash table. */ for (j = 1, ++sym; j < nsym; ++j, ++sym) { + ElfW(Addr) val = sym->st_value; const char *name; if (sym->st_name) name = strtab + sym->st_name; else name = f->sections[sym->st_shndx]->name; +#if defined(__SH5__) + /* + * For sh64 it is possible that the target of a branch + * requires a mode switch (32 to 16 and back again). + * + * This is implied by the lsb being set in the target + * address for SHmedia mode and clear for SHcompact. + */ + val |= sym->st_other & 4; +#endif + obj_add_symbol(f, name, j, sym->st_info, sym->st_shndx, - sym->st_value, sym->st_size); + val, sym->st_size); } } break; |