* very minor changes required to also work with StrongArm and presumably
* all ARM based systems.
*
+ * 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.
+ * Replaced the mess in arch_apply_relocation() with architecture blocks.
+ * The arch_create_got() function got cleaned up with architecture blocks.
+ * These blocks should be easy maintain and sync with obj_xxx.c in modutils.
+ *
* Magnus Damm <damm@opensource.se> added PowerPC support 20-Feb-2001.
* PowerPC specific code stolen from modutils-2.3.16,
* written by Paul Mackerras, Copyright 1996, 1997 Linux International.
#define LOADBITS 1
#endif
-#if defined(__powerpc__)
-#define CONFIG_USE_PLT_ENTRIES
-#define CONFIG_PLT_ENTRY_SIZE 16
-#endif
#if defined(__arm__)
#define CONFIG_USE_PLT_ENTRIES
#define CONFIG_PLT_ENTRY_SIZE 8
#define CONFIG_USE_GOT_ENTRIES
#define CONFIG_GOT_ENTRY_SIZE 8
+#define CONFIG_USE_SINGLE
+
+#define MATCH_MACHINE(x) (x == EM_ARM)
+#define SHT_RELM SHT_REL
+#define Elf32_RelM Elf32_Rel
+#define ELFCLASSM ELFCLASS32
#endif
-#if defined(__sh__)
+#if defined(__i386__)
#define CONFIG_USE_GOT_ENTRIES
#define CONFIG_GOT_ENTRY_SIZE 4
+#define CONFIG_USE_SINGLE
+
+#ifndef EM_486
+#define MATCH_MACHINE(x) (x == EM_386)
+#else
+#define MATCH_MACHINE(x) (x == EM_386 || x == EM_486)
#endif
-#if defined(__i386__)
+#define SHT_RELM SHT_REL
+#define Elf32_RelM Elf32_Rel
+#define ELFCLASSM ELFCLASS32
+#endif
+
+#if defined(__mc68000__)
#define CONFIG_USE_GOT_ENTRIES
#define CONFIG_GOT_ENTRY_SIZE 4
+#define CONFIG_USE_SINGLE
+
+#define MATCH_MACHINE(x) (x == EM_68K)
+#define SHT_RELM SHT_RELA
+#define Elf32_RelM Elf32_Rela
#endif
#if defined(__mips__)
-// neither used
+/* Account for ELF spec changes. */
+#ifndef EM_MIPS_RS3_LE
+#ifdef EM_MIPS_RS4_BE
+#define EM_MIPS_RS3_LE EM_MIPS_RS4_BE
+#else
+#define EM_MIPS_RS3_LE 10
+#endif
+#endif /* !EM_MIPS_RS3_LE */
+
+#define MATCH_MACHINE(x) (x == EM_MIPS || x == EM_MIPS_RS3_LE)
+#define SHT_RELM SHT_REL
+#define Elf32_RelM Elf32_Rel
+#define ELFCLASSM ELFCLASS32
+#define ARCHDATAM "__dbe_table"
+#endif
+
+#if defined(__powerpc__)
+#define CONFIG_USE_PLT_ENTRIES
+#define CONFIG_PLT_ENTRY_SIZE 16
+#define CONFIG_USE_PLT_LIST
+#define CONFIG_LIST_ARCHTYPE ElfW(Addr)
+#define CONFIG_USE_LIST
+
+#define MATCH_MACHINE(x) (x == EM_PPC)
+#define SHT_RELM SHT_RELA
+#define Elf32_RelM Elf32_Rela
+#define ELFCLASSM ELFCLASS32
+#define ARCHDATAM "__ftr_fixup"
+#endif
+
+#if defined(__sh__)
+#define CONFIG_USE_GOT_ENTRIES
+#define CONFIG_GOT_ENTRY_SIZE 4
+#define CONFIG_USE_SINGLE
+
+#define MATCH_MACHINE(x) (x == EM_SH)
+#define SHT_RELM SHT_RELA
+#define Elf32_RelM Elf32_Rela
+#define ELFCLASSM ELFCLASS32
+
+/* the SH changes have only been tested on the SH4 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
+#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
+#endif
#endif
#if defined (__v850e__)
#define CONFIG_USE_PLT_ENTRIES
#define CONFIG_PLT_ENTRY_SIZE 8
+#define CONFIG_USE_SINGLE
+
+#ifndef EM_CYGNUS_V850 /* grumble */
+#define EM_CYGNUS_V850 0x9080
+#endif
+
+#define MATCH_MACHINE(x) ((x) == EM_V850 || (x) == EM_CYGNUS_V850)
+#define SHT_RELM SHT_RELA
+#define Elf32_RelM Elf32_Rela
+#define ELFCLASSM ELFCLASS32
+
+#define SYMBOL_PREFIX "_"
+#endif
+
+#ifndef SHT_RELM
+#error Sorry, but insmod.c does not yet support this architecture...
#endif
+
//----------------------------------------------------------------------------
//--------modutils module.h, lines 45-242
//----------------------------------------------------------------------------
#ifndef MODUTILS_MODULE_H
static const int MODUTILS_MODULE_H = 1;
-#ident "$Id: insmod.c,v 1.82 2002/05/03 10:34:35 andersen Exp $"
+#ident "$Id: insmod.c,v 1.83 2002/05/24 06:50:15 andersen Exp $"
/* This file contains the structures used by the 2.0 and 2.1 kernels.
We do not use the kernel headers directly because we do not wish
#endif
};
+#ifdef ARCHDATAM
+#define ARCHDATA_SEC_NAME ARCHDATAM
+#else
#define ARCHDATA_SEC_NAME "__archdata"
+#endif
#define KALLSYMS_SEC_NAME "__kallsyms"
#ifndef MODUTILS_OBJ_H
static const int MODUTILS_OBJ_H = 1;
-#ident "$Id: insmod.c,v 1.82 2002/05/03 10:34:35 andersen Exp $"
+#ident "$Id: insmod.c,v 1.83 2002/05/24 06:50:15 andersen Exp $"
/* The relocatable object is manipulated using elfin types. */
#define ELFDATAM ELFDATA2MSB
#endif
-
-/* Machine-specific elf macros for i386 et al. */
-
-/* the SH changes have only been tested on the SH4 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
-#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
-#endif
-
-#define ELFCLASSM ELFCLASS32
-
-
-#if defined(__sh__)
-
-#define MATCH_MACHINE(x) (x == EM_SH)
-#define SHT_RELM SHT_RELA
-#define Elf32_RelM Elf32_Rela
-
-#elif defined(__arm__)
-
-#define MATCH_MACHINE(x) (x == EM_ARM)
-#define SHT_RELM SHT_REL
-#define Elf32_RelM Elf32_Rel
-
-#elif defined(__powerpc__)
-
-#define MATCH_MACHINE(x) (x == EM_PPC)
-#define SHT_RELM SHT_RELA
-#define Elf32_RelM Elf32_Rela
-
-#elif defined(__mips__)
-
-/* Account for ELF spec changes. */
-#ifndef EM_MIPS_RS3_LE
-#ifdef EM_MIPS_RS4_BE
-#define EM_MIPS_RS3_LE EM_MIPS_RS4_BE
-#else
-#define EM_MIPS_RS3_LE 10
-#endif
-#endif /* !EM_MIPS_RS3_LE */
-
-#define MATCH_MACHINE(x) (x == EM_MIPS || x == EM_MIPS_RS3_LE)
-#define SHT_RELM SHT_REL
-#define Elf32_RelM Elf32_Rel
-
-#elif defined(__i386__)
-
-/* presumably we can use these for anything but the SH and ARM*/
-/* this is the previous behavior, but it does result in
- insmod.c being broken on anything except i386 */
-#ifndef EM_486
-#define MATCH_MACHINE(x) (x == EM_386)
-#else
-#define MATCH_MACHINE(x) (x == EM_386 || x == EM_486)
-#endif
-
-#define SHT_RELM SHT_REL
-#define Elf32_RelM Elf32_Rel
-
-#elif defined(__mc68000__)
-
-#define MATCH_MACHINE(x) (x == EM_68K)
-#define SHT_RELM SHT_RELA
-#define Elf32_RelM Elf32_Rela
-
-#elif defined (__v850e__)
-
-#ifndef EM_CYGNUS_V850 /* grumble */
-#define EM_CYGNUS_V850 0x9080
-#endif
-
-#define MATCH_MACHINE(x) ((x) == EM_V850 || (x) == EM_CYGNUS_V850)
-#define SHT_RELM SHT_RELA
-#define Elf32_RelM Elf32_Rela
-
-#define SYMBOL_PREFIX "_"
-
-#else
-#error Sorry, but insmod.c does not yet support this architecture...
-#endif
-
#ifndef ElfW
# if ELFCLASSM == ELFCLASS32
# define ElfW(x) Elf32_ ## x
struct obj_symbol *sym,
ElfW(RelM) *rel, ElfW(Addr) value);
-static int arch_create_got (struct obj_file *f);
+static void arch_create_got (struct obj_file *f);
#ifdef CONFIG_FEATURE_NEW_MODULE_INTERFACE
static int arch_init_module (struct obj_file *f, struct new_module *);
/*======================================================================*/
-/* previously, these were named i386_* but since we could be
- compiling for the sh, I've renamed them to the more general
- arch_* These structures are the same between the x86 and SH,
- and we can't support anything else right now anyway. In the
- future maybe they should be #if defined'd */
-
-/* Done ;-) */
-
+#if defined(CONFIG_USE_LIST)
-
-#if defined(CONFIG_USE_PLT_ENTRIES)
-struct arch_plt_entry
+struct arch_list_entry
{
- int offset;
- int allocated:1;
- int inited:1; /* has been set up */
+ struct arch_list_entry *next;
+ CONFIG_LIST_ARCHTYPE addend;
+ int offset;
+ int inited : 1;
};
+
#endif
-#if defined(CONFIG_USE_GOT_ENTRIES)
-struct arch_got_entry {
+#if defined(CONFIG_USE_SINGLE)
+
+struct arch_single_entry
+{
int offset;
- unsigned offset_done:1;
- unsigned reloc_done:1;
+ int inited : 1;
+ int allocated : 1;
};
+
#endif
#if defined(__mips__)
struct arch_symbol {
struct obj_symbol root;
#if defined(CONFIG_USE_PLT_ENTRIES)
- struct arch_plt_entry pltent;
+#if defined(CONFIG_USE_PLT_LIST)
+ struct arch_list_entry *pltent;
+#else
+ struct arch_single_entry pltent;
+#endif
#endif
#if defined(CONFIG_USE_GOT_ENTRIES)
- struct arch_got_entry gotent;
+ struct arch_single_entry gotent;
#endif
};
struct arch_file *f;
f = xmalloc(sizeof(*f));
-#if defined(CONFIG_USE_PLT_ENTRIES)
- f->plt = NULL;
-#endif
-#if defined(CONFIG_USE_GOT_ENTRIES)
- f->got = NULL;
-#endif
-#if defined(__mips__)
- f->mips_hi16_list = NULL;
-#endif
+ memset(f, 0, sizeof(*f));
return &f->root;
}
struct arch_symbol *sym;
sym = xmalloc(sizeof(*sym));
-#if defined(CONFIG_USE_PLT_ENTRIES)
- memset(&sym->pltent, 0, sizeof(sym->pltent));
-#endif
-#if defined(CONFIG_USE_GOT_ENTRIES)
- memset(&sym->gotent, 0, sizeof(sym->gotent));
-#endif
+ memset(sym, 0, sizeof(*sym));
return &sym->root;
}
ElfW(RelM) *rel, ElfW(Addr) v)
{
struct arch_file *ifile = (struct arch_file *) f;
-#if !(defined(__mips__))
- struct arch_symbol *isym = (struct arch_symbol *) sym;
-#endif
-
+ enum obj_reloc ret = obj_reloc_ok;
ElfW(Addr) *loc = (ElfW(Addr) *) (targsec->contents + rel->r_offset);
ElfW(Addr) dot = targsec->header.sh_addr + rel->r_offset;
+#if defined(CONFIG_USE_GOT_ENTRIES) || defined(CONFIG_USE_PLT_ENTRIES)
+ struct arch_symbol *isym = (struct arch_symbol *) sym;
+#endif
#if defined(CONFIG_USE_GOT_ENTRIES)
ElfW(Addr) got = ifile->got ? ifile->got->header.sh_addr : 0;
#endif
#if defined(CONFIG_USE_PLT_ENTRIES)
ElfW(Addr) plt = ifile->plt ? ifile->plt->header.sh_addr : 0;
- struct arch_plt_entry *pe;
unsigned long *ip;
+#if defined(CONFIG_USE_PLT_LIST)
+ struct arch_list_entry *pe;
+#else
+ struct arch_single_entry *pe;
+#endif
#endif
- enum obj_reloc ret = obj_reloc_ok;
switch (ELF32_R_TYPE(rel->r_info)) {
-/* even though these constants seem to be the same for
- the i386 and the sh, we "#if define" them for clarity
- and in case that ever changes */
-#if defined(__sh__)
- case R_SH_NONE:
-#elif defined(__arm__)
+
+#if defined(__arm__)
case R_ARM_NONE:
-#elif defined(__i386__)
- case R_386_NONE:
-#elif defined(__mc68000__)
- case R_68K_NONE:
-#elif defined(__powerpc__)
- case R_PPC_NONE:
-#elif defined(__mips__)
- case R_MIPS_NONE:
-#elif defined (__v850e__)
- case R_V850_NONE:
-#endif
break;
-#if defined (__v850e__)
- case R_V850_32:
- /* We write two shorts instead of a long because even
- 32-bit insns only need half-word alignment, but
- 32-bit data needs to be long-word aligned. */
- v += ((unsigned short *)loc)[0];
- v += ((unsigned short *)loc)[1] << 16;
- ((unsigned short *)loc)[0] = v & 0xffff;
- ((unsigned short *)loc)[1] = (v >> 16) & 0xffff;
- break;
-#else /* !__v850e__ */
-#if defined(__sh__)
- case R_SH_DIR32:
-#elif defined(__arm__)
case R_ARM_ABS32:
-#elif defined(__i386__)
- case R_386_32:
-#elif defined(__mc68000__)
- case R_68K_32:
-#elif defined(__powerpc__)
- case R_PPC_ADDR32:
-#elif defined(__mips__)
- case R_MIPS_32:
-#endif
*loc += v;
break;
-#endif /* __v850e__ */
+
+ case R_ARM_GOT32:
+ goto bb_use_got;
-#if defined(__mc68000__)
- case R_68K_8:
- if (v > 0xff)
- ret = obj_reloc_overflow;
- *(char *)loc = v;
- break;
- case R_68K_16:
- if (v > 0xffff)
- ret = obj_reloc_overflow;
- *(short *)loc = v;
+ case R_ARM_GOTPC:
+ /* relative reloc, always to _GLOBAL_OFFSET_TABLE_
+ * (which is .got) similar to branch,
+ * but is full 32 bits relative */
+
+ assert(got);
+ *loc += got - dot;
break;
-#endif /* __mc68000__ */
-#if defined(__powerpc__)
- case R_PPC_ADDR16_HA:
- *(unsigned short *)loc = (v + 0x8000) >> 16;
+ case R_ARM_PC24:
+ case R_ARM_PLT32:
+ goto bb_use_plt;
+
+ case R_ARM_GOTOFF: /* address relative to the got */
+ assert(got);
+ *loc += v - got;
break;
- case R_PPC_ADDR16_HI:
- *(unsigned short *)loc = v >> 16;
+#elif defined(__i386__)
+
+ case R_386_NONE:
break;
- case R_PPC_ADDR16_LO:
- *(unsigned short *)loc = v;
+ case R_386_32:
+ *loc += v;
break;
-#endif
-#if defined(__mips__)
- case R_MIPS_26:
- if (v % 4)
- ret = obj_reloc_dangerous;
- if ((v & 0xf0000000) != ((dot + 4) & 0xf0000000))
- ret = obj_reloc_overflow;
- *loc =
- (*loc & ~0x03ffffff) | ((*loc + (v >> 2)) &
- 0x03ffffff);
+ case R_386_PLT32:
+ case R_386_PC32:
+ *loc += v - dot;
+ break;
+
+ case R_386_GLOB_DAT:
+ case R_386_JMP_SLOT:
+ *loc = v;
+ break;
+
+ case R_386_RELATIVE:
+ *loc += f->baseaddr;
+ break;
+
+ case R_386_GOTPC:
+ assert(got != 0);
+ *loc += got - dot;
+ break;
+
+ case R_386_GOT32:
+ goto bb_use_got;
+
+ case R_386_GOTOFF:
+ assert(got != 0);
+ *loc += v - got;
+ break;
+
+#elif defined(__mc68000__)
+
+ case R_68K_NONE:
+ break;
+
+ case R_68K_32:
+ *loc += v;
+ break;
+
+ case R_68K_8:
+ if (v > 0xff) {
+ ret = obj_reloc_overflow;
+ }
+ *(char *)loc = v;
+ break;
+
+ case R_68K_16:
+ if (v > 0xffff) {
+ ret = obj_reloc_overflow;
+ }
+ *(short *)loc = v;
+ break;
+
+ case R_68K_PC8:
+ v -= dot;
+ if ((Elf32_Sword)v > 0x7f ||
+ (Elf32_Sword)v < -(Elf32_Sword)0x80) {
+ ret = obj_reloc_overflow;
+ }
+ *(char *)loc = v;
+ break;
+
+ case R_68K_PC16:
+ v -= dot;
+ if ((Elf32_Sword)v > 0x7fff ||
+ (Elf32_Sword)v < -(Elf32_Sword)0x8000) {
+ ret = obj_reloc_overflow;
+ }
+ *(short *)loc = v;
+ break;
+
+ case R_68K_PC32:
+ *(int *)loc = v - dot;
+ break;
+
+ case R_68K_GLOB_DAT:
+ case R_68K_JMP_SLOT:
+ *loc = v;
+ break;
+
+ case R_68K_RELATIVE:
+ *(int *)loc += f->baseaddr;
+ break;
+
+ case R_68K_GOT32:
+ goto bb_use_got;
+
+ case R_68K_GOTOFF:
+ assert(got != 0);
+ *loc += v - got;
+ break;
+
+#elif defined(__mips__)
+
+ case R_MIPS_NONE:
+ break;
+
+ case R_MIPS_32:
+ *loc += v;
+ break;
+
+ case R_MIPS_26:
+ if (v % 4)
+ ret = obj_reloc_dangerous;
+ if ((v & 0xf0000000) != ((dot + 4) & 0xf0000000))
+ ret = obj_reloc_overflow;
+ *loc =
+ (*loc & ~0x03ffffff) | ((*loc + (v >> 2)) &
+ 0x03ffffff);
break;
case R_MIPS_HI16:
*loc = insnlo;
break;
}
-#endif
-#if defined(__arm__)
+#elif defined(__powerpc__)
+
+ case R_PPC_ADDR16_HA:
+ *(unsigned short *)loc = (v + 0x8000) >> 16;
+ break;
+
+ case R_PPC_ADDR16_HI:
+ *(unsigned short *)loc = v >> 16;
+ break;
+
+ case R_PPC_ADDR16_LO:
+ *(unsigned short *)loc = v;
+ break;
+
+ case R_PPC_REL24:
+ goto bb_use_plt;
+
+ case R_PPC_REL32:
+ *loc = v - dot;
+ break;
+
+ case R_PPC_ADDR32:
+ *loc = v;
+ break;
+
#elif defined(__sh__)
- case R_SH_REL32:
- *loc += v - dot;
+
+ case R_SH_NONE:
break;
-#elif defined(__i386__)
- case R_386_PLT32:
- case R_386_PC32:
+
+ case R_SH_DIR32:
+ *loc += v;
+ break;
+
+ case R_SH_REL32:
*loc += v - dot;
break;
-#elif defined(__mc68000__)
- case R_68K_PC8:
- v -= dot;
- if ((Elf32_Sword)v > 0x7f || (Elf32_Sword)v < -(Elf32_Sword)0x80)
- ret = obj_reloc_overflow;
- *(char *)loc = v;
- break;
- case R_68K_PC16:
- v -= dot;
- if ((Elf32_Sword)v > 0x7fff || (Elf32_Sword)v < -(Elf32_Sword)0x8000)
- ret = obj_reloc_overflow;
- *(short *)loc = v;
+
+ case R_SH_PLT32:
+ *loc = v - dot;
break;
- case R_68K_PC32:
- *(int *)loc = v - dot;
+
+ case R_SH_GLOB_DAT:
+ case R_SH_JMP_SLOT:
+ *loc = v;
break;
-#elif defined(__powerpc__)
- case R_PPC_REL32:
- *loc = v - dot;
+
+ case R_SH_RELATIVE:
+ *loc = f->baseaddr + rel->r_addend;
break;
-#endif
-#if defined(__sh__)
- case R_SH_PLT32:
- *loc = v - dot;
- break;
-#elif defined(__i386__)
-#endif
+ case R_SH_GOTPC:
+ assert(got != 0);
+ *loc = got - dot + rel->r_addend;
+ break;
-#if defined(CONFIG_USE_PLT_ENTRIES)
+ case R_SH_GOT32:
+ goto bb_use_got;
+
+ case R_SH_GOTOFF:
+ assert(got != 0);
+ *loc = v - got;
+ break;
-#if defined(__arm__)
- case R_ARM_PC24:
- case R_ARM_PLT32:
-#endif
-#if defined(__powerpc__)
- case R_PPC_REL24:
#endif
+
+ default:
+ printf("Warning: unhandled reloc %d\n",(int)ELF32_R_TYPE(rel->r_info));
+ ret = obj_reloc_unhandled;
+ break;
+
#if defined (__v850e__)
+ case R_V850_NONE:
+ break;
+
+ case R_V850_32:
+ /* We write two shorts instead of a long because even
+ 32-bit insns only need half-word alignment, but
+ 32-bit data needs to be long-word aligned. */
+ v += ((unsigned short *)loc)[0];
+ v += ((unsigned short *)loc)[1] << 16;
+ ((unsigned short *)loc)[0] = v & 0xffff;
+ ((unsigned short *)loc)[1] = (v >> 16) & 0xffff;
+ break;
+
case R_V850_22_PCREL:
+ goto bb_use_plt;
#endif
+
+#if defined(CONFIG_USE_PLT_ENTRIES)
+
+ bb_use_plt:
+
/* find the plt entry and initialize it if necessary */
assert(isym != NULL);
- pe = (struct arch_plt_entry*) &isym->pltent;
+#if defined(CONFIG_USE_PLT_LIST)
+ for (pe = isym->pltent; pe != NULL && pe->addend != rel->r_addend;)
+ pe = pe->next;
+ assert(pe != NULL);
+#else
+ pe = &isym->pltent;
+#endif
if (! pe->inited) {
ip = (unsigned long *) (ifile->plt->contents + pe->offset);
v -= dot;
/* if the target is too far away.... */
#if defined (__arm__) || defined (__powerpc__)
- if ((int)v < -0x02000000 || (int)v >= 0x02000000)
+ if ((int)v < -0x02000000 || (int)v >= 0x02000000)
#elif defined (__v850e__)
if ((Elf32_Sword)v > 0x1fffff || (Elf32_Sword)v < (Elf32_Sword)-0x200000)
#endif
- /* go via the plt */
- v = plt + pe->offset - dot;
+ /* go via the plt */
+ v = plt + pe->offset - dot;
#if defined (__v850e__)
if (v & 1)
#else
if (v & 3)
#endif
- ret = obj_reloc_dangerous;
+ ret = obj_reloc_dangerous;
/* merge the offset into the instruction. */
#if defined(__arm__)
((unsigned short *)loc)[1] =
(v & 0xffff); /* offs low part */
#endif
-
break;
#endif /* CONFIG_USE_PLT_ENTRIES */
-#if defined(__arm__)
-#elif defined(__sh__)
- case R_SH_GLOB_DAT:
- case R_SH_JMP_SLOT:
- *loc = v;
- break;
-#elif defined(__i386__)
- case R_386_GLOB_DAT:
- case R_386_JMP_SLOT:
- *loc = v;
- break;
-#elif defined(__mc68000__)
- case R_68K_GLOB_DAT:
- case R_68K_JMP_SLOT:
- *loc = v;
- break;
-#endif
-
-#if defined(__arm__)
-#elif defined(__sh__)
- case R_SH_RELATIVE:
- *loc += f->baseaddr + rel->r_addend;
- break;
-#elif defined(__i386__)
- case R_386_RELATIVE:
- *loc += f->baseaddr;
- break;
-#elif defined(__mc68000__)
- case R_68K_RELATIVE:
- *(int *)loc += f->baseaddr;
- break;
-#endif
-
#if defined(CONFIG_USE_GOT_ENTRIES)
+ bb_use_got:
-#if !defined(__68k__)
-#if defined(__sh__)
- case R_SH_GOTPC:
-#elif defined(__arm__)
- case R_ARM_GOTPC:
-#elif defined(__i386__)
- case R_386_GOTPC:
-#endif
- assert(got != 0);
-#if defined(__sh__)
- *loc += got - dot + rel->r_addend;;
-#elif defined(__i386__) || defined(__arm__) || defined(__m68k_)
- *loc += got - dot;
-#endif
- break;
-#endif // __68k__
-
-#if defined(__sh__)
- case R_SH_GOT32:
-#elif defined(__arm__)
- case R_ARM_GOT32:
-#elif defined(__i386__)
- case R_386_GOT32:
-#elif defined(__mc68000__)
- case R_68K_GOT32:
-#endif
assert(isym != NULL);
/* needs an entry in the .got: set it, once */
- if (!isym->gotent.reloc_done) {
- isym->gotent.reloc_done = 1;
+ if (!isym->gotent.inited) {
+ isym->gotent.inited = 1;
*(ElfW(Addr) *) (ifile->got->contents + isym->gotent.offset) = v;
}
/* make the reloc with_respect_to_.got */
#endif
break;
- /* address relative to the got */
-#if !defined(__mc68000__)
-#if defined(__sh__)
- case R_SH_GOTOFF:
-#elif defined(__arm__)
- case R_ARM_GOTOFF:
-#elif defined(__i386__)
- case R_386_GOTOFF:
-#elif defined(__mc68000__)
- case R_68K_GOTOFF:
+#endif /* CONFIG_USE_GOT_ENTRIES */
+ }
+
+ return ret;
+}
+
+
+#if defined(CONFIG_USE_LIST)
+
+static int arch_list_add(ElfW(RelM) *rel, struct arch_list_entry **list,
+ int offset, int size)
+{
+ struct arch_list_entry *pe;
+
+ for (pe = *list; pe != NULL; pe = pe->next) {
+ if (pe->addend == rel->r_addend) {
+ break;
+ }
+ }
+
+ if (pe == NULL) {
+ pe = xmalloc(sizeof(struct arch_list_entry));
+ pe->next = *list;
+ pe->addend = rel->r_addend;
+ pe->offset = offset;
+ pe->inited = 0;
+ *list = pe;
+ return size;
+ }
+ return 0;
+}
+
#endif
- assert(got != 0);
- *loc += v - got;
- break;
-#endif // __mc68000__
-#endif /* CONFIG_USE_GOT_ENTRIES */
+#if defined(CONFIG_USE_SINGLE)
- default:
- printf("Warning: unhandled reloc %d\n",(int)ELF32_R_TYPE(rel->r_info));
- ret = obj_reloc_unhandled;
- break;
+static int arch_single_init(ElfW(RelM) *rel, struct arch_single_entry *single,
+ int offset, int size)
+{
+ if (single->allocated == 0) {
+ single->allocated = 1;
+ single->offset = offset;
+ single->inited = 0;
+ return size;
}
+ return 0;
+}
- return ret;
+#endif
+
+#if defined(CONFIG_USE_GOT_ENTRIES) || defined(CONFIG_USE_PLT_ENTRIES)
+
+static struct obj_section *arch_xsect_init(struct obj_file *f, char *name,
+ int offset, int size)
+{
+ struct obj_section *myrelsec = obj_find_section(f, name);
+
+ if (offset == 0) {
+ offset += size;
+ }
+
+ if (myrelsec) {
+ obj_extend_section(myrelsec, offset);
+ } else {
+ myrelsec = obj_create_alloced_section(f, name,
+ size, offset);
+ assert(myrelsec);
+ }
+
+ return myrelsec;
}
-static int arch_create_got(struct obj_file *f)
+#endif
+
+static void arch_create_got(struct obj_file *f)
{
#if defined(CONFIG_USE_GOT_ENTRIES) || defined(CONFIG_USE_PLT_ENTRIES)
struct arch_file *ifile = (struct arch_file *) f;
int i;
#if defined(CONFIG_USE_GOT_ENTRIES)
- int got_offset = 0, gotneeded = 0;
+ int got_offset = 0, got_needed = 0, got_allocate;
#endif
#if defined(CONFIG_USE_PLT_ENTRIES)
- int plt_offset = 0, pltneeded = 0;
+ int plt_offset = 0, plt_needed = 0, plt_allocate;
#endif
struct obj_section *relsec, *symsec, *strsec;
ElfW(RelM) *rel, *relend;
for (; rel < relend; ++rel) {
extsym = &symtab[ELF32_R_SYM(rel->r_info)];
+#if defined(CONFIG_USE_GOT_ENTRIES)
+ got_allocate = 0;
+#endif
+#if defined(CONFIG_USE_PLT_ENTRIES)
+ plt_allocate = 0;
+#endif
+
switch (ELF32_R_TYPE(rel->r_info)) {
#if defined(__arm__)
- case R_ARM_GOT32:
+ case R_ARM_PC24:
+ case R_ARM_PLT32:
+ plt_allocate = 1;
break;
-#elif defined(__sh__)
- case R_SH_GOT32:
+
+ case R_ARM_GOTOFF:
+ case R_ARM_GOTPC:
+ got_needed = 1;
+ continue;
+
+ case R_ARM_GOT32:
+ got_allocate = 1;
break;
+
#elif defined(__i386__)
+ case R_386_GOTPC:
+ case R_386_GOTOFF:
+ got_needed = 1;
+ continue;
+
case R_386_GOT32:
+ got_allocate = 1;
break;
-#elif defined(__mc68000__)
- case R_68K_GOT32:
- break;
-#endif
-#if defined(__powerpc__)
+#elif defined(__powerpc__)
case R_PPC_REL24:
- pltneeded = 1;
+ plt_allocate = 1;
break;
-#endif
-#if defined (__v850e__)
- case R_V850_22_PCREL:
- pltneeded = 1;
+#elif defined(__mc68000__)
+ case R_68K_GOT32:
+ got_allocate = 1;
break;
-#endif
-#if defined(__arm__)
- case R_ARM_PC24:
- case R_ARM_PLT32:
- pltneeded = 1;
- break;
+ case R_68K_GOTOFF:
+ got_needed = 1;
+ continue;
- case R_ARM_GOTPC:
- case R_ARM_GOTOFF:
- gotneeded = 1;
- if (got_offset == 0)
- got_offset = 4;
#elif defined(__sh__)
+ case R_SH_GOT32:
+ got_allocate = 1;
+ break;
+
case R_SH_GOTPC:
case R_SH_GOTOFF:
- gotneeded = 1;
-#elif defined(__i386__)
- case R_386_GOTPC:
- case R_386_GOTOFF:
- gotneeded = 1;
-#endif
+ got_needed = 1;
+ continue;
+
+#elif defined (__v850e__)
+ case R_V850_22_PCREL:
+ plt_needed = 1;
+ break;
+#endif
default:
continue;
}
}
intsym = (struct arch_symbol *) obj_find_symbol(f, name);
#if defined(CONFIG_USE_GOT_ENTRIES)
- if (!intsym->gotent.offset_done) {
- intsym->gotent.offset_done = 1;
- intsym->gotent.offset = got_offset;
- got_offset += CONFIG_GOT_ENTRY_SIZE;
+ if (got_allocate) {
+ got_offset += arch_single_init(
+ rel, &intsym->gotent,
+ got_offset, CONFIG_GOT_ENTRY_SIZE);
+
+ got_needed = 1;
}
#endif
#if defined(CONFIG_USE_PLT_ENTRIES)
- if (pltneeded && intsym->pltent.allocated == 0) {
- intsym->pltent.allocated = 1;
- intsym->pltent.offset = plt_offset;
- plt_offset += CONFIG_PLT_ENTRY_SIZE;
- intsym->pltent.inited = 0;
- pltneeded = 0;
+ if (plt_allocate) {
+#if defined(CONFIG_USE_PLT_LIST)
+ plt_offset += arch_list_add(
+ rel, &intsym->pltent,
+ plt_offset, CONFIG_PLT_ENTRY_SIZE);
+#else
+ plt_offset += arch_single_init(
+ rel, &intsym->pltent,
+ plt_offset, CONFIG_PLT_ENTRY_SIZE);
+#endif
+ plt_needed = 1;
}
#endif
}
}
#if defined(CONFIG_USE_GOT_ENTRIES)
- if (got_offset) {
- struct obj_section* myrelsec = obj_find_section(f, ".got");
-
- if (myrelsec) {
- obj_extend_section(myrelsec, got_offset);
- } else {
- myrelsec = obj_create_alloced_section(f, ".got",
- CONFIG_GOT_ENTRY_SIZE,
- got_offset);
- assert(myrelsec);
- }
-
- ifile->got = myrelsec;
+ if (got_needed) {
+ ifile->got = arch_xsect_init(f, ".got", got_offset,
+ CONFIG_GOT_ENTRY_SIZE);
}
#endif
#if defined(CONFIG_USE_PLT_ENTRIES)
- if (plt_offset)
- ifile->plt = obj_create_alloced_section(f, ".plt",
- CONFIG_PLT_ENTRY_SIZE,
- plt_offset);
-#endif
+ if (plt_needed) {
+ ifile->plt = arch_xsect_init(f, ".plt", plt_offset,
+ CONFIG_PLT_ENTRY_SIZE);
+ }
#endif
- return 1;
+
+#endif /* defined(CONFIG_USE_GOT_ENTRIES) || defined(CONFIG_USE_PLT_ENTRIES) */
}
#ifdef CONFIG_FEATURE_NEW_MODULE_INTERFACE
projects / oweals / busybox.git / commitdiff