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author | Guillaume Cottenceau <gc@mandriva.com> | 2001-02-22 17:21:43 +0000 |
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committer | Guillaume Cottenceau <gc@mandriva.com> | 2001-02-22 17:21:43 +0000 |
commit | 31d44a623579fbca300f20bc751c7278c4375980 (patch) | |
tree | e54cb0772ebc6ffce9fc7ccdcc61d094751d3b54 /mdk-stage1/insmod-modutils/obj/obj_ia64.c | |
parent | 446293819c1c265f0799036bde77f98145187ecf (diff) | |
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use modutils for non Intel arch's
Diffstat (limited to 'mdk-stage1/insmod-modutils/obj/obj_ia64.c')
-rw-r--r-- | mdk-stage1/insmod-modutils/obj/obj_ia64.c | 1065 |
1 files changed, 1065 insertions, 0 deletions
diff --git a/mdk-stage1/insmod-modutils/obj/obj_ia64.c b/mdk-stage1/insmod-modutils/obj/obj_ia64.c new file mode 100644 index 000000000..4f92c5d27 --- /dev/null +++ b/mdk-stage1/insmod-modutils/obj/obj_ia64.c @@ -0,0 +1,1065 @@ +/* + * ia64 specific support for Elf loading and relocation. + * Copyright 2000 Mike Stephens <mike.stephens@intel.com> + * + * This file is part of the Linux modutils. + * + * 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. + */ + +#ident "$Id$" + +#include <string.h> +#include <assert.h> +#include <stdlib.h> + +#include <module.h> +#include <obj.h> +#include <util.h> + +#ifndef FALSE +#define FALSE 0 +#endif +#ifndef TRUE +#define TRUE ~FALSE +#endif + +/*======================================================================*/ + +typedef struct _ia64_opd_t +{ + int offset; + int reloc_done; +} ia64_opd_t; + +typedef struct _ia64_plt_t +{ + struct _ia64_plt_t *next; + Elf64_Addr addend; + int text_offset; + int data_offset; + int reloc_done; +} ia64_plt_t; + +typedef struct _ia64_got_t +{ + struct _ia64_got_t *next; + Elf64_Addr addend; + int offset; + int reloc_done; +} ia64_got_t; + +typedef struct _ia64_symbol_t +{ + struct obj_symbol root; + ia64_got_t *gotent; + ia64_opd_t *opdent; + ia64_plt_t *pltent; +} ia64_symbol_t; + +typedef struct _ia64_file_t +{ + struct obj_file root; + struct obj_section *got; + struct obj_section *opd; + struct obj_section *pltt; + struct obj_section *pltd; + Elf64_Addr gp; + Elf64_Addr text; + Elf64_Addr data; + Elf64_Addr bss; +} ia64_file_t; + +/* + * aa=gp rel address of the function descriptor in the .IA_64.pltoff section + */ +unsigned char ia64_plt_local[] = +{ + 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=aa,gp;; */ + 0x00, 0x41, 0x3c, 0x30, 0x28, 0xc0, /* ld8 r16=[r15],8 */ + 0x01, 0x08, 0x00, 0x84, /* mov r14=gp;; */ + 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 gp=[r15] */ + 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ + 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ +}; + +unsigned char ia64_plt_extern[] = +{ + 0x0b, 0x80, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r16=aa,gp;; */ + 0xf0, 0x00, 0x40, 0x30, 0x20, 0x00, /* ld8 r15=[r16] */ + 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ + 0x0b, 0x80, 0x20, 0x1e, 0x18, 0x14, /* [MMI] ld8 r16=[r15],8;; */ + 0x10, 0x00, 0x3c, 0x30, 0x20, 0xc0, /* ld8 gp=[r15] */ + 0x00, 0x09, 0x00, 0x07, /* mov b6=r16;; */ + 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0x0 */ + 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */ + 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ +}; + +/*======================================================================*/ + +/* + * return the instruction at slot in bundle + */ +Elf64_Xword +obj_ia64_ins_extract_from_bundle(Elf64_Addr *bundle, Elf64_Xword slot) +{ + switch (slot) + { + case 0 : + return (*bundle >> 5) & 0x1ffffffffff; + + case 1 : + return (((*bundle >> 46) & 0x3ffff) | + (*(bundle + 1) << 18)) & 0x1ffffffffff; + + case 2 : + return (*(bundle + 1) >> 23) & 0x1ffffffffff; + + default: + } + return (-1); +} + +/* + * insert a instruction at slot in bundle + */ +void +obj_ia64_ins_insert_in_bundle(Elf64_Addr *bundle, Elf64_Xword slot, Elf64_Xword ins) +{ + Elf64_Xword i; + Elf64_Xword in = ins & 0x1ffffffffff; + + switch (slot) + { + case 0 : + i = *bundle & 0xffffc0000000001f; + *bundle = i | (in << 5); + break; + + case 1 : + i = *bundle & 0x00003fffffffffff; + *bundle = i | (in << 46); + + ++bundle; + i = *bundle & 0xffffffffff800000; + *bundle = i | (in >> 18); + break; + + case 2 : + ++bundle; + i = *bundle & 0x00000000007fffff; + *bundle = i | (in << 23); + break; + } +} + +/* + * add a immediate 14 value to the instruction at slot in bundle + */ +enum obj_reloc +obj_ia64_ins_imm14(Elf64_Xword v, Elf64_Addr *bundle, Elf64_Xword slot) +{ + Elf64_Xword ins; + + ins = obj_ia64_ins_extract_from_bundle(bundle, slot); + ins &= 0xffffffee07f01fff; + ins |= ((v & 0x2000) << 23) | ((v & 0x1f80) << 20) | ((v & 0x007f) << 13); + obj_ia64_ins_insert_in_bundle(bundle, slot, ins); + if (((Elf64_Sxword) v > 8191) || ((Elf64_Sxword) v < -8192)) + return obj_reloc_overflow; + return obj_reloc_ok; +} + +/* + * add a immediate 22 value to the instruction at slot in bundle + */ +enum obj_reloc +obj_ia64_ins_imm22(Elf64_Xword v, Elf64_Addr *bundle, Elf64_Xword slot) +{ + Elf64_Xword ins; + + ins = obj_ia64_ins_extract_from_bundle(bundle, slot); + ins &= 0xffffffe000301fff; + ins |= ((v & 0x200000) << 15) | ((v & 0x1f0000) << 6) | + ((v & 0x00ff80) << 20) | ((v & 0x00007f) << 13); + obj_ia64_ins_insert_in_bundle(bundle, slot, ins); + if (((Elf64_Sxword) v > 2097151) || ((Elf64_Sxword) v < -2097152)) + return obj_reloc_overflow; + return obj_reloc_ok; +} + +/* + * add a immediate 21 value (form 1) to the instruction at slot in bundle + */ +enum obj_reloc +obj_ia64_ins_pcrel21b(Elf64_Xword v, Elf64_Addr *bundle, Elf64_Xword slot) +{ + Elf64_Xword ins; + + ins = obj_ia64_ins_extract_from_bundle(bundle, slot); + ins &= 0xffffffee00001fff; + ins |= ((v & 0x1000000) << 12) | ((v & 0x0fffff0) << 9); + obj_ia64_ins_insert_in_bundle(bundle, slot, ins); + return obj_reloc_ok; +} + +/* + * add a immediate 21 value (form 2) to the instruction at slot in bundle + */ +enum obj_reloc +obj_ia64_ins_pcrel21m(Elf64_Xword v, Elf64_Addr *bundle, Elf64_Xword slot) +{ + Elf64_Xword ins; + + ins = obj_ia64_ins_extract_from_bundle(bundle, slot); + ins &= 0xffffffee000fe03f; + ins |= ((v & 0x1000000) << 12) | ((v & 0x0fff800) << 9) | + ((v & 0x00007f0) << 2); + obj_ia64_ins_insert_in_bundle(bundle, slot, ins); + return obj_reloc_ok; +} + +/* + * add a immediate 21 value (form 3) to the instruction at slot in bundle + */ +enum obj_reloc +obj_ia64_ins_pcrel21f(Elf64_Xword v, Elf64_Addr *bundle, Elf64_Xword slot) +{ + Elf64_Xword ins; + + ins = obj_ia64_ins_extract_from_bundle(bundle, slot); + ins &= 0xffffffeffc00003f; + ins |= ((v & 0x1000000) << 12) | ((v & 0x0fffff0) << 2); + obj_ia64_ins_insert_in_bundle(bundle, slot, ins); + return obj_reloc_ok; +} + +/* + * add a immediate 64 value to the instruction at slot in bundle + */ +enum obj_reloc +obj_ia64_ins_imm64(Elf64_Xword v, Elf64_Addr *bundle, Elf64_Xword slot) +{ + Elf64_Xword ins; + + assert(slot == 1); + ins = obj_ia64_ins_extract_from_bundle(bundle, slot); + ins &= 0xffffffee000101ff; + ins |= ((v & 0x8000000000000000) >> 28) | ((v & 0x0000000000200000)) | + ((v & 0x00000000001f0000) << 6) | ((v & 0x000000000000ff80) << 20) | + ((v & 0x000000000000007f) << 13); + obj_ia64_ins_insert_in_bundle(bundle, slot, ins); + obj_ia64_ins_insert_in_bundle(bundle, ++slot, ((v & 0x7fffffffffc00000) >> 22)); + return obj_reloc_ok; +} + +/* + * create a plt entry + */ +enum obj_reloc +obj_ia64_generate_plt(Elf64_Addr v, + Elf64_Addr gp, + ia64_file_t *ifile, + ia64_symbol_t *isym, + ia64_plt_t *pltent) +{ + *(Elf64_Addr *)(ifile->pltd->contents + pltent->data_offset) = v; + if (isym->root.secidx <= SHN_HIRESERVE) + { + /* local entry */ + *(Elf64_Addr *)(ifile->pltd->contents + pltent->data_offset + 8) = gp; + memcpy((Elf64_Addr *)(ifile->pltt->contents + pltent->text_offset), + ia64_plt_local, sizeof(ia64_plt_local)); + } + else + { + /* external entry */ + memcpy((Elf64_Addr *)(ifile->pltt->contents + pltent->text_offset), + ia64_plt_extern, sizeof(ia64_plt_extern)); + } + return obj_ia64_ins_imm22( + (ifile->pltd->header.sh_addr + pltent->data_offset - gp), + (Elf64_Addr *)(ifile->pltt->contents + pltent->text_offset), 0); +} + +struct obj_section * +obj_ia64_create_alloced_section (struct obj_file *f, const char *name, + unsigned long align, unsigned long size, unsigned long sh_flags) +{ + int newidx = f->header.e_shnum++; + struct obj_section *sec; + + f->sections = xrealloc(f->sections, (newidx+1) * sizeof(sec)); + f->sections[newidx] = sec = arch_new_section(); + + memset(sec, 0, sizeof(*sec)); + sec->header.sh_type = SHT_PROGBITS; + sec->header.sh_flags = sh_flags; + sec->header.sh_size = size; + sec->header.sh_addralign = align; + sec->name = name; + sec->idx = newidx; + if (size) + sec->contents = xmalloc(size); + + obj_insert_section_load_order(f, sec); + + return sec; +} + +/*======================================================================*/ + +struct obj_file * +arch_new_file (void) +{ + ia64_file_t *f; + f = xmalloc(sizeof(*f)); + f->got = NULL; + f->opd = NULL; + f->pltt = NULL; + f->pltd = NULL; + return &f->root; +} + +struct obj_section * +arch_new_section (void) +{ + return xmalloc(sizeof(struct obj_section)); +} + +struct obj_symbol * +arch_new_symbol (void) +{ + ia64_symbol_t *sym; + sym = xmalloc(sizeof(*sym)); + sym->gotent = NULL; + sym->opdent = NULL; + sym->pltent = NULL; + return &sym->root; +} + +int +arch_load_proc_section(struct obj_section *sec, int fp) +{ + switch (sec->header.sh_type) + { + case SHT_IA_64_EXT : + sec->contents = NULL; + break; + + case SHT_IA_64_UNWIND : + if (sec->header.sh_size > 0) + { + sec->contents = xmalloc(sec->header.sh_size); + gzf_lseek(fp, sec->header.sh_offset, SEEK_SET); + if (gzf_read(fp, sec->contents, sec->header.sh_size) != sec->header.sh_size) + { + error("error reading ELF section data: %m"); + return -1; + } + } + else + sec->contents = NULL; + break; + + default: + error("Unknown section header type: %08x", sec->header.sh_type); + return -1; + } + return 0; +} + +int +arch_create_got(struct obj_file *f) +{ + ia64_file_t *ifile = (ia64_file_t *)f; + int i; + int n; + int got_offset = 0; + int opd_offset = 32; + int plt_text_offset = 0; + int plt_data_offset = 0; + + n = ifile->root.header.e_shnum; + for (i = 0; i < n; ++i) + { + struct obj_section *relsec, *symsec, *strsec; + Elf64_Rela *rel, *relend; + Elf64_Sym *symtab; + const char *strtab; + + relsec = ifile->root.sections[i]; + if (relsec->header.sh_type != SHT_RELA) + continue; + + symsec = ifile->root.sections[relsec->header.sh_link]; + strsec = ifile->root.sections[symsec->header.sh_link]; + + rel = (Elf64_Rela *)relsec->contents; + relend = rel + (relsec->header.sh_size / sizeof(Elf64_Rela)); + symtab = (Elf64_Sym *)symsec->contents; + strtab = (const char *)strsec->contents; + + for (; rel < relend; ++rel) + { + int need_got = FALSE; + int need_opd = FALSE; + int need_plt = FALSE; + + switch (ELF64_R_TYPE(rel->r_info)) + { + default: + continue; + + case R_IA64_FPTR64I : /* @fptr(sym + add), mov imm64 */ + case R_IA64_FPTR32LSB : /* @fptr(sym + add), data4 LSB */ + case R_IA64_FPTR64LSB : /* @fptr(sym + add), data8 LSB */ + need_opd = TRUE; + break; + + case R_IA64_LTOFF22 : /* @ltoff(sym + add), add imm22 */ + case R_IA64_LTOFF22X : + case R_IA64_LTOFF64I : /* @ltoff(sym + add), mov imm64 */ + need_got = TRUE; + break; + + case R_IA64_LTOFF_FPTR22 : /* @ltoff(@fptr(s+a)), imm22 */ + case R_IA64_LTOFF_FPTR64I : /* @ltoff(@fptr(s+a)), imm64 */ + case R_IA64_LTOFF_FPTR32LSB : + case R_IA64_LTOFF_FPTR64LSB : + need_got = TRUE; + need_opd = TRUE; + break; + + case R_IA64_PLTOFF22 : /* @pltoff(sym + add), add imm22 */ + case R_IA64_PLTOFF64I : /* @pltoff(sym + add), mov imm64 */ + case R_IA64_PLTOFF64LSB : /* @pltoff(sym + add), data8 LSB */ + + case R_IA64_PCREL21B : /* @pcrel(sym + add), ptb, call */ + case R_IA64_PCREL21M : /* @pcrel(sym + add), chk.s */ + case R_IA64_PCREL21F : /* @pcrel(sym + add), fchkf */ + need_plt = TRUE; + break; + } + + if (need_got || need_opd || need_plt) + { + Elf64_Sym *extsym; + ia64_symbol_t *isym; + const char *name; + int local; + unsigned long symndx; + + symndx = ELF64_R_SYM(rel->r_info); + extsym = &symtab[symndx]; + if (ELF64_ST_BIND(extsym->st_info) == STB_LOCAL) + { + isym = (ia64_symbol_t *) f->local_symtab[symndx]; + } + else + { + if (extsym->st_name) + name = strtab + extsym->st_name; + else + name = f->sections[extsym->st_shndx]->name; + isym = (ia64_symbol_t *)obj_find_symbol(f, name); + } + local = isym->root.secidx <= SHN_HIRESERVE; + + if (need_plt) + { + ia64_plt_t *plt; + + for (plt = isym->pltent; plt != NULL; plt = plt->next) + if (plt->addend == rel->r_addend) + break; + if (plt == NULL) + { + plt = (ia64_plt_t *) xmalloc(sizeof(ia64_plt_t)); + plt->next = isym->pltent; + plt->addend = rel->r_addend; + plt->text_offset = plt_text_offset; + plt->data_offset = plt_data_offset; + plt->reloc_done = FALSE; + isym->pltent = plt; + if (local) + { + plt_text_offset += sizeof(ia64_plt_local); + plt_data_offset += 16; + } + else + { + plt_text_offset += sizeof(ia64_plt_extern); + plt_data_offset += 8; + } + need_plt = FALSE; + } + } + if (need_got) + { + ia64_got_t *got; + + for (got = isym->gotent; got != NULL; got = got->next) + if (got->addend == rel->r_addend) + break; + if (got == NULL) + { + got = (ia64_got_t *) xmalloc(sizeof(ia64_got_t)); + got->next = isym->gotent; + got->addend = rel->r_addend; + got->offset = got_offset; + got->reloc_done = FALSE; + isym->gotent = got; + got_offset += 8; + need_got = FALSE; + } + } + if (need_opd && local) + { + ia64_opd_t *opd; + + if (isym->opdent == NULL) + { + opd = (ia64_opd_t *) xmalloc(sizeof(ia64_opd_t)); + opd->offset = opd_offset; + opd->reloc_done = FALSE; + isym->opdent = opd; + opd_offset += 16; + need_opd = FALSE; + } + } + } + } + } + + ifile->got = obj_ia64_create_alloced_section(f, ".got", 8, got_offset, + (SHF_ALLOC | SHF_WRITE | SHF_IA_64_SHORT)); + assert(ifile->got != NULL); + + ifile->opd = obj_ia64_create_alloced_section(f, ".opd", 16, opd_offset, + (SHF_ALLOC | SHF_WRITE | SHF_IA_64_SHORT)); + assert(ifile->opd != NULL); + + if (plt_text_offset > 0) + { + ifile->pltt = obj_ia64_create_alloced_section(f, ".plt", 16, + plt_text_offset, (SHF_ALLOC | SHF_EXECINSTR | SHF_IA_64_SHORT)); + ifile->pltd = obj_ia64_create_alloced_section(f, ".IA_64.pltoff", + 16, plt_data_offset, (SHF_ALLOC | SHF_WRITE | SHF_IA_64_SHORT)); + assert(ifile->pltt != NULL); + assert(ifile->pltd != NULL); + } + + return 1; +} + +int +arch_finalize_section_address(struct obj_file *f, Elf64_Addr base) +{ + ia64_file_t *ifile = (ia64_file_t *)f; + Elf64_Addr min_addr = (Elf64_Addr) -1; + Elf64_Addr max_addr = 0; + Elf64_Addr min_short_addr = (Elf64_Addr) -1; + Elf64_Addr max_short_addr = 0; + Elf64_Addr gp; + Elf64_Addr text = (Elf64_Addr) -1; + Elf64_Addr data = (Elf64_Addr) -1; + Elf64_Addr bss = (Elf64_Addr) -1; + int n = f->header.e_shnum; + int i; + + /* + * Finalize the addresses of the sections, find the min and max + * address of all sections marked short, and collect min and max + * address of any type, for use in selecting a nice gp. + * + * The algorithm used for selecting set the GP value was taken from + * the ld/bfd code contributed by David Mosberger-Tang <davidm@hpl.hp.com> + */ + f->baseaddr = base; + for (i = 0; i < n; ++i) + { + Elf64_Shdr *header = &f->sections[i]->header; + Elf64_Addr lo; + Elf64_Addr hi; + + header->sh_addr += base; + if (header->sh_flags & SHF_ALLOC) + { + lo = header->sh_addr; + hi = header->sh_addr + header->sh_size; + if (hi < lo) + hi = (Elf64_Addr) -1; + + if (min_addr > lo) + min_addr = lo; + if (max_addr < hi) + max_addr = hi; + if (header->sh_flags & SHF_IA_64_SHORT) + { + if (min_short_addr > lo) + min_short_addr = lo; + if (max_short_addr < hi) + max_short_addr = hi; + } + if ((header->sh_type & SHT_NOBITS) && (lo < bss)) + bss = lo; + else if ((header->sh_flags & SHF_EXECINSTR) && (lo < text)) + text = lo; + else if (lo < data) + data = lo; + } + } + /* Pick a sensible value for gp */ + + /* Start with just the address of the .got */ + gp = ifile->got->header.sh_addr; + + /* + * If it is possible to address the entire image, but we + * don't with the choice above, adjust. + */ + if ((max_addr - min_addr < 0x400000) && (max_addr - gp <= 0x200000) && + (gp - min_addr > 0x200000)) + { + gp = min_addr + 0x200000; + } + else if (max_short_addr != 0) + { + /* If we don't cover all the short data, adjust */ + if (max_short_addr - gp >= 0x200000) + gp = min_short_addr + 0x200000; + + /* If we're addressing stuff past the end, adjust back */ + if (gp > max_addr) + gp = max_addr - 0x200000 + 8; + } + + /* + * Validate whether all SHF_IA_64_SHORT sections are within + * range of the chosen GP. + */ + if (max_short_addr != 0) + { + if (max_short_addr - min_short_addr >= 0x400000) + { + error("short data segment overflowed (0x%lx >= 0x400000)", + (unsigned long)(max_short_addr - min_short_addr)); + return 0; + } + else if (((gp > min_short_addr) && (gp - min_short_addr > 0x200000)) || + ((gp < max_short_addr) && (max_short_addr - gp >= 0x200000))) + { + error("GP does not cover short data segment"); + return 0; + } + } + ifile->gp = gp; + ifile->text = text; + ifile->data = data; + ifile->bss = bss; + return 1; +} + +/* Targets can be unaligned, use memcpy instead of assignment */ +#define COPY_64LSB(loc, v) \ + do { \ + Elf64_Xword reloc = (v); \ + memcpy((void *)(loc), &reloc, 8); \ + } while(0) +#define COPY_32LSB(loc, v) \ + do { \ + Elf32_Xword reloc = (v); \ + memcpy((void *)(loc), &reloc, 4); \ + if ((v) != reloc) \ + ret = obj_reloc_overflow; \ + } while(0) + +enum obj_reloc +arch_apply_relocation(struct obj_file *f, + struct obj_section *targsec, + struct obj_section *symsec, + struct obj_symbol *sym, + Elf64_Rela *rel, + Elf64_Addr v) +{ + ia64_file_t *ifile = (ia64_file_t *) f; + ia64_symbol_t *isym = (ia64_symbol_t *) sym; + + Elf64_Addr loc = (Elf64_Addr)(targsec->contents + rel->r_offset); + Elf64_Addr dot = (targsec->header.sh_addr + rel->r_offset) & ~0x03; + + Elf64_Addr got = ifile->got->header.sh_addr; + Elf64_Addr gp = ifile->gp; + + Elf64_Addr *bundle = (Elf64_Addr *)(loc & ~0x03); + Elf64_Xword slot = loc & 0x03; + + Elf64_Xword r_info = ELF64_R_TYPE(rel->r_info); + + enum obj_reloc ret = obj_reloc_ok; + + /* We cannot load modules compiled with -mconstant-gp */ +#ifndef EF_IA_64_CONS_GP +#define EF_IA_64_CONS_GP 0x00000040 +#endif +#ifndef EF_IA_64_NOFUNCDESC_CONS_GP +#define EF_IA_64_NOFUNCDESC_CONS_GP 0x00000080 +#endif + if (f->header.e_flags & (EF_IA_64_CONS_GP | EF_IA_64_NOFUNCDESC_CONS_GP)) + return obj_reloc_constant_gp; + + switch (r_info) + { + case R_IA64_NONE : /* none */ + case R_IA64_LDXMOV : /* Use of LTOFF22X. */ + break; + + case R_IA64_IMM14 : /* symbol + addend, add imm14 */ + ret = obj_ia64_ins_imm14(v, bundle, slot); + break; + + case R_IA64_IMM22 : /* symbol + addend, add imm22 */ + ret = obj_ia64_ins_imm22(v, bundle, slot); + break; + + case R_IA64_IMM64 : /* symbol + addend, movl imm64 */ + ret = obj_ia64_ins_imm64(v, bundle, slot); + break; + + case R_IA64_DIR32LSB : /* symbol + addend, data4 LSB */ + COPY_32LSB(loc, v); + break; + + case R_IA64_DIR64LSB : /* symbol + addend, data8 LSB */ + COPY_64LSB(loc, v); + break; + + case R_IA64_GPREL22 : /* @gprel(sym + add), add imm22 */ + v -= gp; + ret = obj_ia64_ins_imm22(v, bundle, slot); + break; + + case R_IA64_GPREL64I : /* @gprel(sym + add), mov imm64 */ + v -= gp; + ret = obj_ia64_ins_imm64(v, bundle, slot); + break; + + case R_IA64_GPREL32LSB : /* @gprel(sym + add), data4 LSB */ + COPY_32LSB(loc, v-gp); + break; + + case R_IA64_GPREL64LSB : /* @gprel(sym + add), data8 LSB */ + COPY_64LSB(loc, v-gp); + break; + + case R_IA64_LTOFF22 : /* @ltoff(sym + add), add imm22 */ + case R_IA64_LTOFF22X : /* LTOFF22, relaxable. */ + case R_IA64_LTOFF64I : /* @ltoff(sym + add), mov imm64 */ + { + ia64_got_t *ge; + + assert(isym != NULL); + for (ge = isym->gotent; ge != NULL && ge->addend != rel->r_addend; ) + ge = ge->next; + assert(ge != NULL); + if (!ge->reloc_done) + { + ge->reloc_done = TRUE; + *(Elf64_Addr *)(ifile->got->contents + ge->offset) = v; + } + v = got + ge->offset - gp; + if (r_info == R_IA64_LTOFF64I) + ret = obj_ia64_ins_imm64(v, bundle, slot); + else + ret = obj_ia64_ins_imm22(v, bundle, slot); + } + break; + + case R_IA64_PLTOFF22 : /* @pltoff(sym + add), add imm22 */ + case R_IA64_PLTOFF64I : /* @pltoff(sym + add), mov imm64 */ + case R_IA64_PLTOFF64LSB : /* @pltoff(sym + add), data8 LSB */ + { + ia64_plt_t *pe; + + assert(isym != NULL); + for (pe = isym->pltent; pe != NULL && pe->addend != rel->r_addend; ) + pe = pe->next; + assert(pe != NULL); + if (!pe->reloc_done) + { + pe->reloc_done = TRUE; + ret = obj_ia64_generate_plt(v, gp, ifile, isym, pe); + } + v = ifile->pltt->header.sh_addr + pe->text_offset - gp; + switch (r_info) + { + case R_IA64_PLTOFF22 : + ret = obj_ia64_ins_imm22(v, bundle, slot); + break; + + case R_IA64_PLTOFF64I : + ret = obj_ia64_ins_imm64(v, bundle, slot); + break; + + case R_IA64_PLTOFF64LSB : + COPY_64LSB(loc, v); + break; + } + } + break; + + case R_IA64_FPTR64I : /* @fptr(sym + add), mov imm64 */ + case R_IA64_FPTR32LSB : /* @fptr(sym + add), data4 LSB */ + case R_IA64_FPTR64LSB : /* @fptr(sym + add), data8 LSB */ + assert(isym != NULL); + if (isym->root.secidx <= SHN_HIRESERVE) + { + assert(isym->opdent != NULL); + if (!isym->opdent->reloc_done) + { + isym->opdent->reloc_done = TRUE; + *(Elf64_Addr *)(ifile->opd->contents + isym->opdent->offset) = v; + *(Elf64_Addr *)(ifile->opd->contents + isym->opdent->offset + 8) = gp; + } + v = ifile->opd->header.sh_addr + isym->opdent->offset; + } + switch (r_info) + { + case R_IA64_FPTR64I : + ret = obj_ia64_ins_imm64(v, bundle, slot); + break; + + case R_IA64_FPTR32LSB : + COPY_32LSB(loc, v); + break; + + case R_IA64_FPTR64LSB : /* @fptr(sym + add), data8 LSB */ + /* Target can be unaligned */ + COPY_64LSB(loc, v); + break; + } + break; + + case R_IA64_PCREL21B : /* @pcrel(sym + add), ptb, call */ + case R_IA64_PCREL21M : /* @pcrel(sym + add), chk.s */ + case R_IA64_PCREL21F : /* @pcrel(sym + add), fchkf */ + assert(isym != NULL); + if ((isym->root.secidx > SHN_HIRESERVE) || + ((Elf64_Sxword) (v - dot) > 16777215) || + ((Elf64_Sxword) (v - dot) < -16777216)) + { + ia64_plt_t *pe; + + for (pe = isym->pltent; pe != NULL && pe->addend != rel->r_addend; ) + pe = pe->next; + assert(pe != NULL); + if (!pe->reloc_done) + { + pe->reloc_done = TRUE; + ret = obj_ia64_generate_plt(v, gp, ifile, isym, pe); + } + v = ifile->pltt->header.sh_addr + pe->text_offset; + } + v -= dot; + switch (r_info) + { + case R_IA64_PCREL21B : + ret = obj_ia64_ins_pcrel21b(v, bundle, slot); + break; + + case R_IA64_PCREL21M : + ret = obj_ia64_ins_pcrel21m(v, bundle, slot); + break; + + case R_IA64_PCREL21F : + ret = obj_ia64_ins_pcrel21f(v, bundle, slot); + break; + } + break; + + case R_IA64_PCREL32LSB : /* @pcrel(sym + add), data4 LSB */ + COPY_32LSB(loc, v-dot); + break; + + case R_IA64_PCREL64LSB : /* @pcrel(sym + add), data8 LSB */ + COPY_64LSB(loc, v-dot); + break; + + case R_IA64_LTOFF_FPTR22 : /* @ltoff(@fptr(s+a)), imm22 */ + case R_IA64_LTOFF_FPTR64I : /* @ltoff(@fptr(s+a)), imm64 */ + case R_IA64_LTOFF_FPTR32LSB : /* @ltoff(@fptr(s+a)), data4 */ + case R_IA64_LTOFF_FPTR64LSB : /* @ltoff(@fptr(s+a)), data8 */ + { + ia64_got_t *ge; + + assert(isym != NULL); + if (isym->root.secidx <= SHN_HIRESERVE) + { + assert(isym->opdent != NULL); + if (!isym->opdent->reloc_done) + { + isym->opdent->reloc_done = TRUE; + *(Elf64_Addr *)(ifile->opd->contents + isym->opdent->offset) = v; + *(Elf64_Addr *)(ifile->opd->contents + isym->opdent->offset + 8) = gp; + } + v = ifile->opd->header.sh_addr + isym->opdent->offset; + } + for (ge = isym->gotent; ge != NULL && ge->addend != rel->r_addend; ) + ge = ge->next; + assert(ge != NULL); + if (!ge->reloc_done) + { + ge->reloc_done = TRUE; + *(Elf64_Addr *)(ifile->got->contents + ge->offset) = v; + } + v = got + ge->offset - gp; + switch (r_info) + { + case R_IA64_LTOFF_FPTR22 : + ret = obj_ia64_ins_imm22(v, bundle, slot); + break; + + case R_IA64_LTOFF_FPTR64I : + ret = obj_ia64_ins_imm64(v, bundle, slot); + break; + + case R_IA64_LTOFF_FPTR32LSB : + COPY_32LSB(loc, v); + break; + + case R_IA64_LTOFF_FPTR64LSB : + COPY_64LSB(loc, v); + break; + } + } + break; + + case R_IA64_SEGREL32LSB : /* @segrel(sym + add), data4 LSB */ + case R_IA64_SEGREL64LSB : /* @segrel(sym + add), data8 LSB */ + if (targsec->header.sh_type & SHT_NOBITS) + v = ifile->bss - v; + else if (targsec->header.sh_flags & SHF_EXECINSTR) + v = ifile->text - v; + else + v = ifile->data - v; + if (r_info == R_IA64_SEGREL32LSB) + COPY_32LSB(loc, v); + else + COPY_64LSB(loc, v); + break; + + case R_IA64_SECREL32LSB : /* @secrel(sym + add), data4 LSB */ + COPY_32LSB(loc, targsec->header.sh_addr - v); + break; + + case R_IA64_SECREL64LSB : /* @secrel(sym + add), data8 LSB */ + COPY_64LSB(loc, targsec->header.sh_addr - v); + break; + + /* + * We don't handle the big-endian relocates + * + * R_IA64_DIR32MSB symbol + addend, data4 MSB + * R_IA64_DIR64MSB symbol + addend, data8 MSB + * R_IA64_GPREL32MSB @gprel(sym + add), data4 MSB + * R_IA64_GPREL64MSB @gprel(sym + add), data8 MSB + * R_IA64_PLTOFF64MSB @pltoff(sym + add), data8 MSB + * R_IA64_FPTR32MSB @fptr(sym + add), data4 MSB + * R_IA64_FPTR64MSB @fptr(sym + add), data8 MSB + * R_IA64_PCREL32MSB @pcrel(sym + add), data4 MSB + * R_IA64_PCREL64MSB @pcrel(sym + add), data8 MSB + * R_IA64_SEGREL32MSB @segrel(sym + add), data4 MSB + * R_IA64_SEGREL64MSB @segrel(sym + add), data8 MSB + * R_IA64_SECREL32MSB @secrel(sym + add), data4 MSB + * R_IA64_SECREL64MSB @secrel(sym + add), data8 MSB + * R_IA64_REL32MSB data 4 + REL + * R_IA64_REL64MSB data 8 + REL + * R_IA64_LTV32MSB symbol + addend, data4 MSB + * R_IA64_LTV64MSB symbol + addend, data8 MSB + * R_IA64_IPLTMSB dynamic reloc, imported PLT, MSB + */ + default: + case R_IA64_REL32LSB : /* data 4 + REL */ + case R_IA64_REL64LSB : /* data 8 + REL */ + case R_IA64_LTV32LSB : /* symbol + addend, data4 LSB */ + case R_IA64_LTV64LSB : /* symbol + addend, data8 LSB */ + case R_IA64_IPLTLSB : /* dynamic reloc, imported PLT, LSB */ + ret = obj_reloc_unhandled; + break; + } + return ret; +} + +int +arch_init_module (struct obj_file *f, struct module *mod) +{ + ia64_file_t *ifile = (ia64_file_t *)f; + Elf64_Addr *opd = (Elf64_Addr *)(ifile->opd->contents); + + if ((opd[0] = mod->init) != 0) + { + opd[1] = ifile->gp; + mod->init = ifile->opd->header.sh_addr; + } + + if ((opd[2] = mod->cleanup) != 0) + { + opd[3] = ifile->gp; + mod->cleanup = ifile->opd->header.sh_addr + 16; + } + + return 1; +} + +int +arch_archdata (struct obj_file *f, struct obj_section *archdata_sec) +{ + ia64_file_t *ifile = (ia64_file_t *)f; + struct archdata { + unsigned tgt_long unw_table; + unsigned tgt_long segment_base; + unsigned tgt_long unw_start; + unsigned tgt_long unw_end; + unsigned tgt_long gp; + } *ad; + int i; + struct obj_section *sec; + + free(archdata_sec->contents); + archdata_sec->contents = xmalloc(sizeof(struct archdata)); + memset(archdata_sec->contents, 0, sizeof(struct archdata)); + archdata_sec->header.sh_size = sizeof(struct archdata); + + ad = (struct archdata *)(archdata_sec->contents); + ad->gp = ifile->gp; + ad->unw_start = 0; + ad->unw_end = 0; + ad->unw_table = 0; + ad->segment_base = f->sections[1]->header.sh_addr; + for (i = 0; i < f->header.e_shnum; ++i) + { + sec = f->sections[i]; + if (sec->header.sh_type == SHT_IA_64_UNWIND) + { + ad->unw_start = sec->header.sh_addr; + ad->unw_end = sec->header.sh_addr + sec->header.sh_size; + break; + } + } + + return 0; +} |