[qemu.git] / include / hw / elf_ops.h

static void glue(bswap_ehdr, SZ)(struct elfhdr *ehdr)
{
    bswap16s(&ehdr->e_type);			/* Object file type */
    bswap16s(&ehdr->e_machine);		/* Architecture */
    bswap32s(&ehdr->e_version);		/* Object file version */
    bswapSZs(&ehdr->e_entry);		/* Entry point virtual address */
    bswapSZs(&ehdr->e_phoff);		/* Program header table file offset */
    bswapSZs(&ehdr->e_shoff);		/* Section header table file offset */
    bswap32s(&ehdr->e_flags);		/* Processor-specific flags */
    bswap16s(&ehdr->e_ehsize);		/* ELF header size in bytes */
    bswap16s(&ehdr->e_phentsize);		/* Program header table entry size */
    bswap16s(&ehdr->e_phnum);		/* Program header table entry count */
    bswap16s(&ehdr->e_shentsize);		/* Section header table entry size */
    bswap16s(&ehdr->e_shnum);		/* Section header table entry count */
    bswap16s(&ehdr->e_shstrndx);		/* Section header string table index */
}

static void glue(bswap_phdr, SZ)(struct elf_phdr *phdr)
{
    bswap32s(&phdr->p_type);			/* Segment type */
    bswapSZs(&phdr->p_offset);		/* Segment file offset */
    bswapSZs(&phdr->p_vaddr);		/* Segment virtual address */
    bswapSZs(&phdr->p_paddr);		/* Segment physical address */
    bswapSZs(&phdr->p_filesz);		/* Segment size in file */
    bswapSZs(&phdr->p_memsz);		/* Segment size in memory */
    bswap32s(&phdr->p_flags);		/* Segment flags */
    bswapSZs(&phdr->p_align);		/* Segment alignment */
}

static void glue(bswap_shdr, SZ)(struct elf_shdr *shdr)
{
    bswap32s(&shdr->sh_name);
    bswap32s(&shdr->sh_type);
    bswapSZs(&shdr->sh_flags);
    bswapSZs(&shdr->sh_addr);
    bswapSZs(&shdr->sh_offset);
    bswapSZs(&shdr->sh_size);
    bswap32s(&shdr->sh_link);
    bswap32s(&shdr->sh_info);
    bswapSZs(&shdr->sh_addralign);
    bswapSZs(&shdr->sh_entsize);
}

static void glue(bswap_sym, SZ)(struct elf_sym *sym)
{
    bswap32s(&sym->st_name);
    bswapSZs(&sym->st_value);
    bswapSZs(&sym->st_size);
    bswap16s(&sym->st_shndx);
}

static void glue(bswap_rela, SZ)(struct elf_rela *rela)
{
    bswapSZs(&rela->r_offset);
    bswapSZs(&rela->r_info);
    bswapSZs((elf_word *)&rela->r_addend);
}

static struct elf_shdr *glue(find_section, SZ)(struct elf_shdr *shdr_table,
                                               int n, int type)
{
    int i;
    for(i=0;i<n;i++) {
        if (shdr_table[i].sh_type == type)
            return shdr_table + i;
    }
    return NULL;
}

static int glue(symfind, SZ)(const void *s0, const void *s1)
{
    hwaddr addr = *(hwaddr *)s0;
    struct elf_sym *sym = (struct elf_sym *)s1;
    int result = 0;
    if (addr < sym->st_value) {
        result = -1;
    } else if (addr >= sym->st_value + sym->st_size) {
        result = 1;
    }
    return result;
}

static const char *glue(lookup_symbol, SZ)(struct syminfo *s,
                                           hwaddr orig_addr)
{
    struct elf_sym *syms = glue(s->disas_symtab.elf, SZ);
    struct elf_sym *sym;

    sym = bsearch(&orig_addr, syms, s->disas_num_syms, sizeof(*syms),
                  glue(symfind, SZ));
    if (sym != NULL) {
        return s->disas_strtab + sym->st_name;
    }

    return "";
}

static int glue(symcmp, SZ)(const void *s0, const void *s1)
{
    struct elf_sym *sym0 = (struct elf_sym *)s0;
    struct elf_sym *sym1 = (struct elf_sym *)s1;
    return (sym0->st_value < sym1->st_value)
        ? -1
        : ((sym0->st_value > sym1->st_value) ? 1 : 0);
}

static int glue(load_symbols, SZ)(struct elfhdr *ehdr, int fd, int must_swab,
                                  int clear_lsb)
{
    struct elf_shdr *symtab, *strtab, *shdr_table = NULL;
    struct elf_sym *syms = NULL;
    struct syminfo *s;
    int nsyms, i;
    char *str = NULL;

    shdr_table = load_at(fd, ehdr->e_shoff,
                         sizeof(struct elf_shdr) * ehdr->e_shnum);
    if (!shdr_table)
        return -1;

    if (must_swab) {
        for (i = 0; i < ehdr->e_shnum; i++) {
            glue(bswap_shdr, SZ)(shdr_table + i);
        }
    }

    symtab = glue(find_section, SZ)(shdr_table, ehdr->e_shnum, SHT_SYMTAB);
    if (!symtab)
        goto fail;
    syms = load_at(fd, symtab->sh_offset, symtab->sh_size);
    if (!syms)
        goto fail;

    nsyms = symtab->sh_size / sizeof(struct elf_sym);

    i = 0;
    while (i < nsyms) {
        if (must_swab)
            glue(bswap_sym, SZ)(&syms[i]);
        /* We are only interested in function symbols.
           Throw everything else away.  */
        if (syms[i].st_shndx == SHN_UNDEF ||
                syms[i].st_shndx >= SHN_LORESERVE ||
                ELF_ST_TYPE(syms[i].st_info) != STT_FUNC) {
            nsyms--;
            if (i < nsyms) {
                syms[i] = syms[nsyms];
            }
            continue;
        }
        if (clear_lsb) {
            /* The bottom address bit marks a Thumb or MIPS16 symbol.  */
            syms[i].st_value &= ~(glue(glue(Elf, SZ), _Addr))1;
        }
        i++;
    }
    syms = g_realloc(syms, nsyms * sizeof(*syms));

    qsort(syms, nsyms, sizeof(*syms), glue(symcmp, SZ));
    for (i = 0; i < nsyms - 1; i++) {
        if (syms[i].st_size == 0) {
            syms[i].st_size = syms[i + 1].st_value - syms[i].st_value;
        }
    }

    /* String table */
    if (symtab->sh_link >= ehdr->e_shnum)
        goto fail;
    strtab = &shdr_table[symtab->sh_link];

    str = load_at(fd, strtab->sh_offset, strtab->sh_size);
    if (!str)
        goto fail;

    /* Commit */
    s = g_malloc0(sizeof(*s));
    s->lookup_symbol = glue(lookup_symbol, SZ);
    glue(s->disas_symtab.elf, SZ) = syms;
    s->disas_num_syms = nsyms;
    s->disas_strtab = str;
    s->next = syminfos;
    syminfos = s;
    g_free(shdr_table);
    return 0;
 fail:
    g_free(syms);
    g_free(str);
    g_free(shdr_table);
    return -1;
}

static int glue(elf_reloc, SZ)(struct elfhdr *ehdr, int fd, int must_swab,
                               uint64_t (*translate_fn)(void *, uint64_t),
                               void *translate_opaque, uint8_t *data,
                               struct elf_phdr *ph, int elf_machine)
{
    struct elf_shdr *reltab, *shdr_table = NULL;
    struct elf_rela *rels = NULL;
    int nrels, i, ret = -1;
    elf_word wordval;
    void *addr;

    shdr_table = load_at(fd, ehdr->e_shoff,
                         sizeof(struct elf_shdr) * ehdr->e_shnum);
    if (!shdr_table) {
        return -1;
    }
    if (must_swab) {
        for (i = 0; i < ehdr->e_shnum; i++) {
            glue(bswap_shdr, SZ)(&shdr_table[i]);
        }
    }

    reltab = glue(find_section, SZ)(shdr_table, ehdr->e_shnum, SHT_RELA);
    if (!reltab) {
        goto fail;
    }
    rels = load_at(fd, reltab->sh_offset, reltab->sh_size);
    if (!rels) {
        goto fail;
    }
    nrels = reltab->sh_size / sizeof(struct elf_rela);

    for (i = 0; i < nrels; i++) {
        if (must_swab) {
            glue(bswap_rela, SZ)(&rels[i]);
        }
        if (rels[i].r_offset < ph->p_vaddr ||
            rels[i].r_offset >= ph->p_vaddr + ph->p_filesz) {
            continue;
        }
        addr = &data[rels[i].r_offset - ph->p_vaddr];
        switch (elf_machine) {
        case EM_S390:
            switch (rels[i].r_info) {
            case R_390_RELATIVE:
                wordval = *(elf_word *)addr;
                if (must_swab) {
                    bswapSZs(&wordval);
                }
                wordval = translate_fn(translate_opaque, wordval);
                if (must_swab) {
                    bswapSZs(&wordval);
                }
                *(elf_word *)addr = wordval;
                break;
            default:
                fprintf(stderr, "Unsupported relocation type %i!\n",
                        (int)rels[i].r_info);
            }
        }
    }

    ret = 0;
fail:
    g_free(rels);
    g_free(shdr_table);
    return ret;
}

static int glue(load_elf, SZ)(const char *name, int fd,
                              uint64_t (*translate_fn)(void *, uint64_t),
                              void *translate_opaque,
                              int must_swab, uint64_t *pentry,
                              uint64_t *lowaddr, uint64_t *highaddr,
                              int elf_machine, int clear_lsb, int data_swab,
                              AddressSpace *as, bool load_rom)
{
    struct elfhdr ehdr;
    struct elf_phdr *phdr = NULL, *ph;
    int size, i, total_size;
    elf_word mem_size, file_size;
    uint64_t addr, low = (uint64_t)-1, high = 0;
    uint8_t *data = NULL;
    char label[128];
    int ret = ELF_LOAD_FAILED;

    if (read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr))
        goto fail;
    if (must_swab) {
        glue(bswap_ehdr, SZ)(&ehdr);
    }

    if (elf_machine <= EM_NONE) {
        /* The caller didn't specify an ARCH, we can figure it out */
        elf_machine = ehdr.e_machine;
    }

    switch (elf_machine) {
        case EM_PPC64:
            if (ehdr.e_machine != EM_PPC64) {
                if (ehdr.e_machine != EM_PPC) {
                    ret = ELF_LOAD_WRONG_ARCH;
                    goto fail;
                }
            }
            break;
        case EM_X86_64:
            if (ehdr.e_machine != EM_X86_64) {
                if (ehdr.e_machine != EM_386) {
                    ret = ELF_LOAD_WRONG_ARCH;
                    goto fail;
                }
            }
            break;
        case EM_MICROBLAZE:
            if (ehdr.e_machine != EM_MICROBLAZE) {
                if (ehdr.e_machine != EM_MICROBLAZE_OLD) {
                    ret = ELF_LOAD_WRONG_ARCH;
                    goto fail;
                }
            }
            break;
        case EM_MOXIE:
            if (ehdr.e_machine != EM_MOXIE) {
                if (ehdr.e_machine != EM_MOXIE_OLD) {
                    ret = ELF_LOAD_WRONG_ARCH;
                    goto fail;
                }
            }
            break;
        default:
            if (elf_machine != ehdr.e_machine) {
                ret = ELF_LOAD_WRONG_ARCH;
                goto fail;
            }
    }

    if (pentry)
   	*pentry = (uint64_t)(elf_sword)ehdr.e_entry;

    glue(load_symbols, SZ)(&ehdr, fd, must_swab, clear_lsb);

    size = ehdr.e_phnum * sizeof(phdr[0]);
    if (lseek(fd, ehdr.e_phoff, SEEK_SET) != ehdr.e_phoff) {
        goto fail;
    }
    phdr = g_malloc0(size);
    if (!phdr)
        goto fail;
    if (read(fd, phdr, size) != size)
        goto fail;
    if (must_swab) {
        for(i = 0; i < ehdr.e_phnum; i++) {
            ph = &phdr[i];
            glue(bswap_phdr, SZ)(ph);
        }
    }

    total_size = 0;
    for(i = 0; i < ehdr.e_phnum; i++) {
        ph = &phdr[i];
        if (ph->p_type == PT_LOAD) {
            mem_size = ph->p_memsz; /* Size of the ROM */
            file_size = ph->p_filesz; /* Size of the allocated data */
            data = g_malloc0(file_size);
            if (ph->p_filesz > 0) {
                if (lseek(fd, ph->p_offset, SEEK_SET) < 0) {
                    goto fail;
                }
                if (read(fd, data, file_size) != file_size) {
                    goto fail;
                }
            }
            /* address_offset is hack for kernel images that are
               linked at the wrong physical address.  */
            if (translate_fn) {
                addr = translate_fn(translate_opaque, ph->p_paddr);
                glue(elf_reloc, SZ)(&ehdr, fd, must_swab,  translate_fn,
                                    translate_opaque, data, ph, elf_machine);
            } else {
                addr = ph->p_paddr;
            }

            if (data_swab) {
                int j;
                for (j = 0; j < file_size; j += (1 << data_swab)) {
                    uint8_t *dp = data + j;
                    switch (data_swab) {
                    case (1):
                        *(uint16_t *)dp = bswap16(*(uint16_t *)dp);
                        break;
                    case (2):
                        *(uint32_t *)dp = bswap32(*(uint32_t *)dp);
                        break;
                    case (3):
                        *(uint64_t *)dp = bswap64(*(uint64_t *)dp);
                        break;
                    default:
                        g_assert_not_reached();
                    }
                }
            }

            /* the entry pointer in the ELF header is a virtual
             * address, if the text segments paddr and vaddr differ
             * we need to adjust the entry */
            if (pentry && !translate_fn &&
                    ph->p_vaddr != ph->p_paddr &&
                    ehdr.e_entry >= ph->p_vaddr &&
                    ehdr.e_entry < ph->p_vaddr + ph->p_filesz &&
                    ph->p_flags & PF_X) {
                *pentry = ehdr.e_entry - ph->p_vaddr + ph->p_paddr;
            }

            if (load_rom) {
                snprintf(label, sizeof(label), "phdr #%d: %s", i, name);

                /* rom_add_elf_program() seize the ownership of 'data' */
                rom_add_elf_program(label, data, file_size, mem_size, addr, as);
            } else {
                cpu_physical_memory_write(addr, data, file_size);
                g_free(data);
            }

            total_size += mem_size;
            if (addr < low)
                low = addr;
            if ((addr + mem_size) > high)
                high = addr + mem_size;

            data = NULL;
        }
    }
    g_free(phdr);
    if (lowaddr)
        *lowaddr = (uint64_t)(elf_sword)low;
    if (highaddr)
        *highaddr = (uint64_t)(elf_sword)high;
    return total_size;
 fail:
    g_free(data);
    g_free(phdr);
    return ret;
}
Commit	Line	Data
5fe141fd FB	1	static void glue(bswap_ehdr, SZ)(struct elfhdr *ehdr)
	2	{
	3	bswap16s(&ehdr->e_type); /* Object file type */
	4	bswap16s(&ehdr->e_machine); /* Architecture */
	5	bswap32s(&ehdr->e_version); /* Object file version */
	6	bswapSZs(&ehdr->e_entry); /* Entry point virtual address */
	7	bswapSZs(&ehdr->e_phoff); /* Program header table file offset */
	8	bswapSZs(&ehdr->e_shoff); /* Section header table file offset */
	9	bswap32s(&ehdr->e_flags); /* Processor-specific flags */
	10	bswap16s(&ehdr->e_ehsize); /* ELF header size in bytes */
	11	bswap16s(&ehdr->e_phentsize); /* Program header table entry size */
	12	bswap16s(&ehdr->e_phnum); /* Program header table entry count */
	13	bswap16s(&ehdr->e_shentsize); /* Section header table entry size */
	14	bswap16s(&ehdr->e_shnum); /* Section header table entry count */
	15	bswap16s(&ehdr->e_shstrndx); /* Section header string table index */
	16	}
	17
	18	static void glue(bswap_phdr, SZ)(struct elf_phdr *phdr)
	19	{
	20	bswap32s(&phdr->p_type); /* Segment type */
	21	bswapSZs(&phdr->p_offset); /* Segment file offset */
	22	bswapSZs(&phdr->p_vaddr); /* Segment virtual address */
	23	bswapSZs(&phdr->p_paddr); /* Segment physical address */
	24	bswapSZs(&phdr->p_filesz); /* Segment size in file */
	25	bswapSZs(&phdr->p_memsz); /* Segment size in memory */
	26	bswap32s(&phdr->p_flags); /* Segment flags */
	27	bswapSZs(&phdr->p_align); /* Segment alignment */
	28	}
	29
	30	static void glue(bswap_shdr, SZ)(struct elf_shdr *shdr)
	31	{
	32	bswap32s(&shdr->sh_name);
	33	bswap32s(&shdr->sh_type);
	34	bswapSZs(&shdr->sh_flags);
	35	bswapSZs(&shdr->sh_addr);
	36	bswapSZs(&shdr->sh_offset);
	37	bswapSZs(&shdr->sh_size);
	38	bswap32s(&shdr->sh_link);
	39	bswap32s(&shdr->sh_info);
	40	bswapSZs(&shdr->sh_addralign);
	41	bswapSZs(&shdr->sh_entsize);
	42	}
	43
	44	static void glue(bswap_sym, SZ)(struct elf_sym *sym)
	45	{
	46	bswap32s(&sym->st_name);
	47	bswapSZs(&sym->st_value);
	48	bswapSZs(&sym->st_size);
	49	bswap16s(&sym->st_shndx);
	50	}
	51
5dce07e1 TH	52	static void glue(bswap_rela, SZ)(struct elf_rela *rela)
	53	{
	54	bswapSZs(&rela->r_offset);
	55	bswapSZs(&rela->r_info);
	56	bswapSZs((elf_word *)&rela->r_addend);
	57	}
	58
5fafdf24	59	static struct elf_shdr glue(find_section, SZ)(struct elf_shdr shdr_table,
5fe141fd FB	60	int n, int type)
	61	{
	62	int i;
	63	for(i=0;i<n;i++) {
	64	if (shdr_table[i].sh_type == type)
	65	return shdr_table + i;
	66	}
	67	return NULL;
	68	}
	69
49918a75 PB	70	static int glue(symfind, SZ)(const void s0, const void s1)
49918a75 PB	71	{
a8170e5e	72	hwaddr addr = (hwaddr )s0;
49918a75 PB	73	struct elf_sym sym = (struct elf_sym )s1;
49918a75 PB	74	int result = 0;
c7c530cd	75	if (addr < sym->st_value) {
49918a75	76	result = -1;
c7c530cd	77	} else if (addr >= sym->st_value + sym->st_size) {
49918a75 PB	78	result = 1;
	79	}
	80	return result;
	81	}
	82
ca20cf32	83	static const char glue(lookup_symbol, SZ)(struct syminfo s,
a8170e5e	84	hwaddr orig_addr)
49918a75 PB	85	{
49918a75 PB	86	struct elf_sym *syms = glue(s->disas_symtab.elf, SZ);
49918a75 PB	87	struct elf_sym *sym;
49918a75 PB	88
c7c530cd SW	89	sym = bsearch(&orig_addr, syms, s->disas_num_syms, sizeof(*syms),
c7c530cd SW	90	glue(symfind, SZ));
660f11be	91	if (sym != NULL) {
49918a75 PB	92	return s->disas_strtab + sym->st_name;
	93	}
	94
	95	return "";
	96	}
	97
	98	static int glue(symcmp, SZ)(const void s0, const void s1)
	99	{
	100	struct elf_sym sym0 = (struct elf_sym )s0;
	101	struct elf_sym sym1 = (struct elf_sym )s1;
	102	return (sym0->st_value < sym1->st_value)
	103	? -1
	104	: ((sym0->st_value > sym1->st_value) ? 1 : 0);
	105	}
	106
ca20cf32 BS	107	static int glue(load_symbols, SZ)(struct elfhdr *ehdr, int fd, int must_swab,
ca20cf32 BS	108	int clear_lsb)
5fe141fd FB	109	{
	110	struct elf_shdr symtab, strtab, *shdr_table = NULL;
	111	struct elf_sym *syms = NULL;
5fe141fd FB	112	struct syminfo *s;
	113	int nsyms, i;
	114	char *str = NULL;
	115
5fafdf24	116	shdr_table = load_at(fd, ehdr->e_shoff,
5fe141fd FB	117	sizeof(struct elf_shdr) * ehdr->e_shnum);
	118	if (!shdr_table)
	119	return -1;
3b46e624	120
5fe141fd FB	121	if (must_swab) {
	122	for (i = 0; i < ehdr->e_shnum; i++) {
	123	glue(bswap_shdr, SZ)(shdr_table + i);
	124	}
	125	}
3b46e624	126
5fe141fd FB	127	symtab = glue(find_section, SZ)(shdr_table, ehdr->e_shnum, SHT_SYMTAB);
	128	if (!symtab)
	129	goto fail;
	130	syms = load_at(fd, symtab->sh_offset, symtab->sh_size);
	131	if (!syms)
	132	goto fail;
	133
	134	nsyms = symtab->sh_size / sizeof(struct elf_sym);
49918a75 PB	135
	136	i = 0;
	137	while (i < nsyms) {
5fe141fd FB	138	if (must_swab)
5fe141fd FB	139	glue(bswap_sym, SZ)(&syms[i]);
49918a75 PB	140	/* We are only interested in function symbols.
	141	Throw everything else away. */
	142	if (syms[i].st_shndx == SHN_UNDEF \|\|
	143	syms[i].st_shndx >= SHN_LORESERVE \|\|
	144	ELF_ST_TYPE(syms[i].st_info) != STT_FUNC) {
	145	nsyms--;
	146	if (i < nsyms) {
	147	syms[i] = syms[nsyms];
	148	}
	149	continue;
	150	}
ca20cf32 BS	151	if (clear_lsb) {
	152	/* The bottom address bit marks a Thumb or MIPS16 symbol. */
	153	syms[i].st_value &= ~(glue(glue(Elf, SZ), _Addr))1;
	154	}
49918a75	155	i++;
5fe141fd	156	}
8ce3c44c	157	syms = g_realloc(syms, nsyms * sizeof(*syms));
49918a75	158
8ce3c44c MA	159	qsort(syms, nsyms, sizeof(*syms), glue(symcmp, SZ));
	160	for (i = 0; i < nsyms - 1; i++) {
	161	if (syms[i].st_size == 0) {
	162	syms[i].st_size = syms[i + 1].st_value - syms[i].st_value;
e403e433	163	}
3e372cf8	164	}
49918a75	165
5fe141fd FB	166	/* String table */
	167	if (symtab->sh_link >= ehdr->e_shnum)
	168	goto fail;
	169	strtab = &shdr_table[symtab->sh_link];
	170
	171	str = load_at(fd, strtab->sh_offset, strtab->sh_size);
	172	if (!str)
49918a75	173	goto fail;
5fe141fd FB	174
5fe141fd FB	175	/* Commit */
7267c094	176	s = g_malloc0(sizeof(*s));
49918a75 PB	177	s->lookup_symbol = glue(lookup_symbol, SZ);
49918a75 PB	178	glue(s->disas_symtab.elf, SZ) = syms;
5fe141fd FB	179	s->disas_num_syms = nsyms;
	180	s->disas_strtab = str;
	181	s->next = syminfos;
	182	syminfos = s;
7267c094	183	g_free(shdr_table);
5fe141fd FB	184	return 0;
5fe141fd FB	185	fail:
7267c094 AL	186	g_free(syms);
	187	g_free(str);
	188	g_free(shdr_table);
5fe141fd FB	189	return -1;
	190	}
	191
5dce07e1 TH	192	static int glue(elf_reloc, SZ)(struct elfhdr *ehdr, int fd, int must_swab,
	193	uint64_t (translate_fn)(void , uint64_t),
	194	void translate_opaque, uint8_t data,
	195	struct elf_phdr *ph, int elf_machine)
	196	{
	197	struct elf_shdr reltab, shdr_table = NULL;
	198	struct elf_rela *rels = NULL;
	199	int nrels, i, ret = -1;
	200	elf_word wordval;
	201	void *addr;
	202
	203	shdr_table = load_at(fd, ehdr->e_shoff,
	204	sizeof(struct elf_shdr) * ehdr->e_shnum);
	205	if (!shdr_table) {
	206	return -1;
	207	}
	208	if (must_swab) {
	209	for (i = 0; i < ehdr->e_shnum; i++) {
	210	glue(bswap_shdr, SZ)(&shdr_table[i]);
	211	}
	212	}
	213
	214	reltab = glue(find_section, SZ)(shdr_table, ehdr->e_shnum, SHT_RELA);
	215	if (!reltab) {
	216	goto fail;
	217	}
	218	rels = load_at(fd, reltab->sh_offset, reltab->sh_size);
	219	if (!rels) {
	220	goto fail;
	221	}
	222	nrels = reltab->sh_size / sizeof(struct elf_rela);
	223
	224	for (i = 0; i < nrels; i++) {
	225	if (must_swab) {
	226	glue(bswap_rela, SZ)(&rels[i]);
	227	}
	228	if (rels[i].r_offset < ph->p_vaddr \|\|
	229	rels[i].r_offset >= ph->p_vaddr + ph->p_filesz) {
	230	continue;
	231	}
	232	addr = &data[rels[i].r_offset - ph->p_vaddr];
	233	switch (elf_machine) {
	234	case EM_S390:
	235	switch (rels[i].r_info) {
	236	case R_390_RELATIVE:
	237	wordval = (elf_word )addr;
	238	if (must_swab) {
	239	bswapSZs(&wordval);
	240	}
	241	wordval = translate_fn(translate_opaque, wordval);
	242	if (must_swab) {
	243	bswapSZs(&wordval);
	244	}
	245	(elf_word )addr = wordval;
	246	break;
	247	default:
	248	fprintf(stderr, "Unsupported relocation type %i!\n",
	249	(int)rels[i].r_info);
	250	}
	251	}
	252	}
	253
	254	ret = 0;
	255	fail:
256	g_free(rels);
257	g_free(shdr_table);
258	return ret;
259	}
260
409dbce5 AJ	261	static int glue(load_elf, SZ)(const char *name, int fd,
	262	uint64_t (translate_fn)(void , uint64_t),
	263	void *translate_opaque,
9596ebb7	264	int must_swab, uint64_t *pentry,
ca20cf32	265	uint64_t lowaddr, uint64_t highaddr,
70bb1d16	266	int elf_machine, int clear_lsb, int data_swab,
34f1b23f	267	AddressSpace *as, bool load_rom)
5fe141fd FB	268	{
	269	struct elfhdr ehdr;
	270	struct elf_phdr phdr = NULL, ph;
	271	int size, i, total_size;
d60fa42e	272	elf_word mem_size, file_size;
fd93a799	273	uint64_t addr, low = (uint64_t)-1, high = 0;
9ee3c029	274	uint8_t *data = NULL;
45a50b16	275	char label[128];
18674b26	276	int ret = ELF_LOAD_FAILED;
5fe141fd FB	277
	278	if (read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr))
	279	goto fail;
	280	if (must_swab) {
	281	glue(bswap_ehdr, SZ)(&ehdr);
	282	}
	283
8cf6e9da AF	284	if (elf_machine <= EM_NONE) {
	285	/* The caller didn't specify an ARCH, we can figure it out */
	286	elf_machine = ehdr.e_machine;
	287	}
	288
ca20cf32	289	switch (elf_machine) {
7f70c937	290	case EM_PPC64:
7cc47221 PC	291	if (ehdr.e_machine != EM_PPC64) {
7cc47221 PC	292	if (ehdr.e_machine != EM_PPC) {
18674b26	293	ret = ELF_LOAD_WRONG_ARCH;
7f70c937	294	goto fail;
18674b26	295	}
7cc47221	296	}
7f70c937 BS	297	break;
7f70c937 BS	298	case EM_X86_64:
7cc47221 PC	299	if (ehdr.e_machine != EM_X86_64) {
7cc47221 PC	300	if (ehdr.e_machine != EM_386) {
18674b26	301	ret = ELF_LOAD_WRONG_ARCH;
7f70c937	302	goto fail;
18674b26	303	}
7cc47221	304	}
7f70c937	305	break;
16f04416	306	case EM_MICROBLAZE:
7cc47221 PC	307	if (ehdr.e_machine != EM_MICROBLAZE) {
7cc47221 PC	308	if (ehdr.e_machine != EM_MICROBLAZE_OLD) {
18674b26	309	ret = ELF_LOAD_WRONG_ARCH;
16f04416	310	goto fail;
18674b26	311	}
7cc47221	312	}
16f04416	313	break;
98dbe5ac PC	314	case EM_MOXIE:
	315	if (ehdr.e_machine != EM_MOXIE) {
	316	if (ehdr.e_machine != EM_MOXIE_OLD) {
	317	ret = ELF_LOAD_WRONG_ARCH;
	318	goto fail;
	319	}
	320	}
	321	break;
7f70c937	322	default:
18674b26 AK	323	if (elf_machine != ehdr.e_machine) {
18674b26 AK	324	ret = ELF_LOAD_WRONG_ARCH;
7f70c937	325	goto fail;
18674b26	326	}
7f70c937	327	}
9042c0e2	328
9ee3c029	329	if (pentry)
82790064	330	*pentry = (uint64_t)(elf_sword)ehdr.e_entry;
9ee3c029	331
ca20cf32	332	glue(load_symbols, SZ)(&ehdr, fd, must_swab, clear_lsb);
5fe141fd FB	333
5fe141fd FB	334	size = ehdr.e_phnum * sizeof(phdr[0]);
23bf2e76 SW	335	if (lseek(fd, ehdr.e_phoff, SEEK_SET) != ehdr.e_phoff) {
	336	goto fail;
	337	}
7267c094	338	phdr = g_malloc0(size);
5fe141fd FB	339	if (!phdr)
	340	goto fail;
	341	if (read(fd, phdr, size) != size)
04d4b0c3	342	goto fail;
5fe141fd FB	343	if (must_swab) {
	344	for(i = 0; i < ehdr.e_phnum; i++) {
	345	ph = &phdr[i];
	346	glue(bswap_phdr, SZ)(ph);
	347	}
	348	}
3b46e624	349
5fe141fd FB	350	total_size = 0;
	351	for(i = 0; i < ehdr.e_phnum; i++) {
	352	ph = &phdr[i];
	353	if (ph->p_type == PT_LOAD) {
d60fa42e FC	354	mem_size = ph->p_memsz; /* Size of the ROM */
	355	file_size = ph->p_filesz; /* Size of the allocated data */
	356	data = g_malloc0(file_size);
5fe141fd	357	if (ph->p_filesz > 0) {
d60fa42e	358	if (lseek(fd, ph->p_offset, SEEK_SET) < 0) {
04d4b0c3	359	goto fail;
d60fa42e FC	360	}
d60fa42e FC	361	if (read(fd, data, file_size) != file_size) {
04d4b0c3	362	goto fail;
d60fa42e	363	}
5fe141fd	364	}
83c1f87c PB	365	/* address_offset is hack for kernel images that are
83c1f87c PB	366	linked at the wrong physical address. */
409dbce5 AJ	367	if (translate_fn) {
409dbce5 AJ	368	addr = translate_fn(translate_opaque, ph->p_paddr);
5dce07e1 TH	369	glue(elf_reloc, SZ)(&ehdr, fd, must_swab, translate_fn,
5dce07e1 TH	370	translate_opaque, data, ph, elf_machine);
409dbce5 AJ	371	} else {
	372	addr = ph->p_paddr;
	373	}
5fe141fd	374
7ef295ea PC	375	if (data_swab) {
	376	int j;
	377	for (j = 0; j < file_size; j += (1 << data_swab)) {
	378	uint8_t *dp = data + j;
	379	switch (data_swab) {
	380	case (1):
	381	(uint16_t )dp = bswap16((uint16_t )dp);
	382	break;
	383	case (2):
	384	(uint32_t )dp = bswap32((uint32_t )dp);
	385	break;
	386	case (3):
	387	(uint64_t )dp = bswap64((uint64_t )dp);
	388	break;
	389	default:
	390	g_assert_not_reached();
	391	}
	392	}
	393	}
	394
7e9c7ffe HS	395	/* the entry pointer in the ELF header is a virtual
	396	* address, if the text segments paddr and vaddr differ
	397	* we need to adjust the entry */
	398	if (pentry && !translate_fn &&
	399	ph->p_vaddr != ph->p_paddr &&
	400	ehdr.e_entry >= ph->p_vaddr &&
	401	ehdr.e_entry < ph->p_vaddr + ph->p_filesz &&
	402	ph->p_flags & PF_X) {
	403	*pentry = ehdr.e_entry - ph->p_vaddr + ph->p_paddr;
	404	}
	405
34f1b23f FA	406	if (load_rom) {
34f1b23f FA	407	snprintf(label, sizeof(label), "phdr #%d: %s", i, name);
d60fa42e	408
34f1b23f FA	409	/* rom_add_elf_program() seize the ownership of 'data' */
	410	rom_add_elf_program(label, data, file_size, mem_size, addr, as);
	411	} else {
	412	cpu_physical_memory_write(addr, data, file_size);
	413	g_free(data);
	414	}
5fe141fd FB	415
5fe141fd FB	416	total_size += mem_size;
fd93a799	417	if (addr < low)
74287114	418	low = addr;
fd93a799	419	if ((addr + mem_size) > high)
74287114	420	high = addr + mem_size;
5fe141fd	421
9ee3c029	422	data = NULL;
5fe141fd FB	423	}
5fe141fd FB	424	}
7267c094	425	g_free(phdr);
74287114	426	if (lowaddr)
82790064	427	*lowaddr = (uint64_t)(elf_sword)low;
74287114	428	if (highaddr)
82790064	429	*highaddr = (uint64_t)(elf_sword)high;
5fe141fd	430	return total_size;
04d4b0c3	431	fail:
7267c094 AL	432	g_free(data);
7267c094 AL	433	g_free(phdr);
18674b26	434	return ret;
5fe141fd	435	}