Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 1578 insertions, 0 deletions

diff --git a/qemu/bsd-user/elfload.c b/qemu/bsd-user/elfload.c
new file mode 100644
index 000000000..2bf57eb1f
--- /dev/null
+++ b/qemu/bsd-user/elfload.c
@@ -0,0 +1,1578 @@
+/* This is the Linux kernel elf-loading code, ported into user space */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "qemu.h"
+#include "disas/disas.h"
+
+#ifdef _ARCH_PPC64
+#undef ARCH_DLINFO
+#undef ELF_PLATFORM
+#undef ELF_HWCAP
+#undef ELF_CLASS
+#undef ELF_DATA
+#undef ELF_ARCH
+#endif
+
+/* from personality.h */
+
+/*
+ * Flags for bug emulation.
+ *
+ * These occupy the top three bytes.
+ */
+enum {
+        ADDR_NO_RANDOMIZE =     0x0040000,      /* disable randomization of VA space */
+        FDPIC_FUNCPTRS =        0x0080000,      /* userspace function ptrs point to descriptors
+                                                 * (signal handling)
+                                                 */
+        MMAP_PAGE_ZERO =        0x0100000,
+        ADDR_COMPAT_LAYOUT =    0x0200000,
+        READ_IMPLIES_EXEC =     0x0400000,
+        ADDR_LIMIT_32BIT =      0x0800000,
+        SHORT_INODE =           0x1000000,
+        WHOLE_SECONDS =         0x2000000,
+        STICKY_TIMEOUTS =       0x4000000,
+        ADDR_LIMIT_3GB =        0x8000000,
+};
+
+/*
+ * Personality types.
+ *
+ * These go in the low byte.  Avoid using the top bit, it will
+ * conflict with error returns.
+ */
+enum {
+        PER_LINUX =             0x0000,
+        PER_LINUX_32BIT =       0x0000 | ADDR_LIMIT_32BIT,
+        PER_LINUX_FDPIC =       0x0000 | FDPIC_FUNCPTRS,
+        PER_SVR4 =              0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
+        PER_SVR3 =              0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
+        PER_SCOSVR3 =           0x0003 | STICKY_TIMEOUTS |
+                                         WHOLE_SECONDS | SHORT_INODE,
+        PER_OSR5 =              0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
+        PER_WYSEV386 =          0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
+        PER_ISCR4 =             0x0005 | STICKY_TIMEOUTS,
+        PER_BSD =               0x0006,
+        PER_SUNOS =             0x0006 | STICKY_TIMEOUTS,
+        PER_XENIX =             0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
+        PER_LINUX32 =           0x0008,
+        PER_LINUX32_3GB =       0x0008 | ADDR_LIMIT_3GB,
+        PER_IRIX32 =            0x0009 | STICKY_TIMEOUTS,/* IRIX5 32-bit */
+        PER_IRIXN32 =           0x000a | STICKY_TIMEOUTS,/* IRIX6 new 32-bit */
+        PER_IRIX64 =            0x000b | STICKY_TIMEOUTS,/* IRIX6 64-bit */
+        PER_RISCOS =            0x000c,
+        PER_SOLARIS =           0x000d | STICKY_TIMEOUTS,
+        PER_UW7 =               0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
+        PER_OSF4 =              0x000f,                  /* OSF/1 v4 */
+        PER_HPUX =              0x0010,
+        PER_MASK =              0x00ff,
+};
+
+/*
+ * Return the base personality without flags.
+ */
+#define personality(pers)       (pers & PER_MASK)
+
+/* this flag is uneffective under linux too, should be deleted */
+#ifndef MAP_DENYWRITE
+#define MAP_DENYWRITE 0
+#endif
+
+/* should probably go in elf.h */
+#ifndef ELIBBAD
+#define ELIBBAD 80
+#endif
+
+#ifdef TARGET_I386
+
+#define ELF_PLATFORM get_elf_platform()
+
+static const char *get_elf_platform(void)
+{
+    static char elf_platform[] = "i386";
+    int family = object_property_get_int(OBJECT(thread_cpu), "family", NULL);
+    if (family > 6)
+        family = 6;
+    if (family >= 3)
+        elf_platform[1] = '0' + family;
+    return elf_platform;
+}
+
+#define ELF_HWCAP get_elf_hwcap()
+
+static uint32_t get_elf_hwcap(void)
+{
+    X86CPU *cpu = X86_CPU(thread_cpu);
+
+    return cpu->env.features[FEAT_1_EDX];
+}
+
+#ifdef TARGET_X86_64
+#define ELF_START_MMAP 0x2aaaaab000ULL
+#define elf_check_arch(x) ( ((x) == ELF_ARCH) )
+
+#define ELF_CLASS      ELFCLASS64
+#define ELF_DATA       ELFDATA2LSB
+#define ELF_ARCH       EM_X86_64
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+    regs->rax = 0;
+    regs->rsp = infop->start_stack;
+    regs->rip = infop->entry;
+    if (bsd_type == target_freebsd) {
+        regs->rdi = infop->start_stack;
+    }
+}
+
+#else
+
+#define ELF_START_MMAP 0x80000000
+
+/*
+ * This is used to ensure we don't load something for the wrong architecture.
+ */
+#define elf_check_arch(x) ( ((x) == EM_386) || ((x) == EM_486) )
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS       ELFCLASS32
+#define ELF_DATA        ELFDATA2LSB
+#define ELF_ARCH        EM_386
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+    regs->esp = infop->start_stack;
+    regs->eip = infop->entry;
+
+    /* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program
+       starts %edx contains a pointer to a function which might be
+       registered using `atexit'.  This provides a mean for the
+       dynamic linker to call DT_FINI functions for shared libraries
+       that have been loaded before the code runs.
+
+       A value of 0 tells we have no such handler.  */
+    regs->edx = 0;
+}
+#endif
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE       4096
+
+#endif
+
+#ifdef TARGET_ARM
+
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_ARM )
+
+#define ELF_CLASS       ELFCLASS32
+#ifdef TARGET_WORDS_BIGENDIAN
+#define ELF_DATA        ELFDATA2MSB
+#else
+#define ELF_DATA        ELFDATA2LSB
+#endif
+#define ELF_ARCH        EM_ARM
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+    abi_long stack = infop->start_stack;
+    memset(regs, 0, sizeof(*regs));
+    regs->ARM_cpsr = 0x10;
+    if (infop->entry & 1)
+      regs->ARM_cpsr |= CPSR_T;
+    regs->ARM_pc = infop->entry & 0xfffffffe;
+    regs->ARM_sp = infop->start_stack;
+    /* FIXME - what to for failure of get_user()? */
+    get_user_ual(regs->ARM_r2, stack + 8); /* envp */
+    get_user_ual(regs->ARM_r1, stack + 4); /* envp */
+    /* XXX: it seems that r0 is zeroed after ! */
+    regs->ARM_r0 = 0;
+    /* For uClinux PIC binaries.  */
+    /* XXX: Linux does this only on ARM with no MMU (do we care ?) */
+    regs->ARM_r10 = infop->start_data;
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE       4096
+
+enum
+{
+  ARM_HWCAP_ARM_SWP       = 1 << 0,
+  ARM_HWCAP_ARM_HALF      = 1 << 1,
+  ARM_HWCAP_ARM_THUMB     = 1 << 2,
+  ARM_HWCAP_ARM_26BIT     = 1 << 3,
+  ARM_HWCAP_ARM_FAST_MULT = 1 << 4,
+  ARM_HWCAP_ARM_FPA       = 1 << 5,
+  ARM_HWCAP_ARM_VFP       = 1 << 6,
+  ARM_HWCAP_ARM_EDSP      = 1 << 7,
+};
+
+#define ELF_HWCAP (ARM_HWCAP_ARM_SWP | ARM_HWCAP_ARM_HALF              \
+                    | ARM_HWCAP_ARM_THUMB | ARM_HWCAP_ARM_FAST_MULT     \
+                    | ARM_HWCAP_ARM_FPA | ARM_HWCAP_ARM_VFP)
+
+#endif
+
+#ifdef TARGET_SPARC
+#ifdef TARGET_SPARC64
+
+#define ELF_START_MMAP 0x80000000
+
+#ifndef TARGET_ABI32
+#define elf_check_arch(x) ( (x) == EM_SPARCV9 || (x) == EM_SPARC32PLUS )
+#else
+#define elf_check_arch(x) ( (x) == EM_SPARC32PLUS || (x) == EM_SPARC )
+#endif
+
+#define ELF_CLASS   ELFCLASS64
+#define ELF_DATA    ELFDATA2MSB
+#define ELF_ARCH    EM_SPARCV9
+
+#define STACK_BIAS              2047
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+#ifndef TARGET_ABI32
+    regs->tstate = 0;
+#endif
+    regs->pc = infop->entry;
+    regs->npc = regs->pc + 4;
+    regs->y = 0;
+#ifdef TARGET_ABI32
+    regs->u_regs[14] = infop->start_stack - 16 * 4;
+#else
+    if (personality(infop->personality) == PER_LINUX32)
+        regs->u_regs[14] = infop->start_stack - 16 * 4;
+    else {
+        regs->u_regs[14] = infop->start_stack - 16 * 8 - STACK_BIAS;
+        if (bsd_type == target_freebsd) {
+            regs->u_regs[8] = infop->start_stack;
+            regs->u_regs[11] = infop->start_stack;
+        }
+    }
+#endif
+}
+
+#else
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_SPARC )
+
+#define ELF_CLASS   ELFCLASS32
+#define ELF_DATA    ELFDATA2MSB
+#define ELF_ARCH    EM_SPARC
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+    regs->psr = 0;
+    regs->pc = infop->entry;
+    regs->npc = regs->pc + 4;
+    regs->y = 0;
+    regs->u_regs[14] = infop->start_stack - 16 * 4;
+}
+
+#endif
+#endif
+
+#ifdef TARGET_PPC
+
+#define ELF_START_MMAP 0x80000000
+
+#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
+
+#define elf_check_arch(x) ( (x) == EM_PPC64 )
+
+#define ELF_CLASS       ELFCLASS64
+
+#else
+
+#define elf_check_arch(x) ( (x) == EM_PPC )
+
+#define ELF_CLASS       ELFCLASS32
+
+#endif
+
+#ifdef TARGET_WORDS_BIGENDIAN
+#define ELF_DATA        ELFDATA2MSB
+#else
+#define ELF_DATA        ELFDATA2LSB
+#endif
+#define ELF_ARCH        EM_PPC
+
+/*
+ * We need to put in some extra aux table entries to tell glibc what
+ * the cache block size is, so it can use the dcbz instruction safely.
+ */
+#define AT_DCACHEBSIZE          19
+#define AT_ICACHEBSIZE          20
+#define AT_UCACHEBSIZE          21
+/* A special ignored type value for PPC, for glibc compatibility.  */
+#define AT_IGNOREPPC            22
+/*
+ * The requirements here are:
+ * - keep the final alignment of sp (sp & 0xf)
+ * - make sure the 32-bit value at the first 16 byte aligned position of
+ *   AUXV is greater than 16 for glibc compatibility.
+ *   AT_IGNOREPPC is used for that.
+ * - for compatibility with glibc ARCH_DLINFO must always be defined on PPC,
+ *   even if DLINFO_ARCH_ITEMS goes to zero or is undefined.
+ */
+#define DLINFO_ARCH_ITEMS       5
+#define ARCH_DLINFO                                                     \
+do {                                                                    \
+        NEW_AUX_ENT(AT_DCACHEBSIZE, 0x20);                              \
+        NEW_AUX_ENT(AT_ICACHEBSIZE, 0x20);                              \
+        NEW_AUX_ENT(AT_UCACHEBSIZE, 0);                                 \
+        /*                                                              \
+         * Now handle glibc compatibility.                              \
+         */                                                             \
+        NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC);                        \
+        NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC);                        \
+ } while (0)
+
+static inline void init_thread(struct target_pt_regs *_regs, struct image_info *infop)
+{
+    abi_ulong pos = infop->start_stack;
+    abi_ulong tmp;
+#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
+    abi_ulong entry, toc;
+#endif
+
+    _regs->gpr[1] = infop->start_stack;
+#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
+    get_user_u64(entry, infop->entry);
+    entry += infop->load_addr;
+    get_user_u64(toc, infop->entry + 8);
+    toc += infop->load_addr;
+    _regs->gpr[2] = toc;
+    infop->entry = entry;
+#endif
+    _regs->nip = infop->entry;
+    /* Note that isn't exactly what regular kernel does
+     * but this is what the ABI wants and is needed to allow
+     * execution of PPC BSD programs.
+     */
+    /* FIXME - what to for failure of get_user()? */
+    get_user_ual(_regs->gpr[3], pos);
+    pos += sizeof(abi_ulong);
+    _regs->gpr[4] = pos;
+    for (tmp = 1; tmp != 0; pos += sizeof(abi_ulong)) {
+        get_user_ual(tmp, pos);
+    }
+    _regs->gpr[5] = pos;
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE       4096
+
+#endif
+
+#ifdef TARGET_MIPS
+
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_MIPS )
+
+#ifdef TARGET_MIPS64
+#define ELF_CLASS   ELFCLASS64
+#else
+#define ELF_CLASS   ELFCLASS32
+#endif
+#ifdef TARGET_WORDS_BIGENDIAN
+#define ELF_DATA        ELFDATA2MSB
+#else
+#define ELF_DATA        ELFDATA2LSB
+#endif
+#define ELF_ARCH    EM_MIPS
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+    regs->cp0_status = 2 << CP0St_KSU;
+    regs->cp0_epc = infop->entry;
+    regs->regs[29] = infop->start_stack;
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE        4096
+
+#endif /* TARGET_MIPS */
+
+#ifdef TARGET_SH4
+
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_SH )
+
+#define ELF_CLASS ELFCLASS32
+#define ELF_DATA  ELFDATA2LSB
+#define ELF_ARCH  EM_SH
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+  /* Check other registers XXXXX */
+  regs->pc = infop->entry;
+  regs->regs[15] = infop->start_stack;
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE        4096
+
+#endif
+
+#ifdef TARGET_CRIS
+
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_CRIS )
+
+#define ELF_CLASS ELFCLASS32
+#define ELF_DATA  ELFDATA2LSB
+#define ELF_ARCH  EM_CRIS
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+  regs->erp = infop->entry;
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE        8192
+
+#endif
+
+#ifdef TARGET_M68K
+
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_68K )
+
+#define ELF_CLASS       ELFCLASS32
+#define ELF_DATA        ELFDATA2MSB
+#define ELF_ARCH        EM_68K
+
+/* ??? Does this need to do anything?
+#define ELF_PLAT_INIT(_r) */
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+    regs->usp = infop->start_stack;
+    regs->sr = 0;
+    regs->pc = infop->entry;
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE       8192
+
+#endif
+
+#ifdef TARGET_ALPHA
+
+#define ELF_START_MMAP (0x30000000000ULL)
+
+#define elf_check_arch(x) ( (x) == ELF_ARCH )
+
+#define ELF_CLASS      ELFCLASS64
+#define ELF_DATA       ELFDATA2MSB
+#define ELF_ARCH       EM_ALPHA
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+    regs->pc = infop->entry;
+    regs->ps = 8;
+    regs->usp = infop->start_stack;
+    regs->unique = infop->start_data; /* ? */
+    printf("Set unique value to " TARGET_FMT_lx " (" TARGET_FMT_lx ")\n",
+           regs->unique, infop->start_data);
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE        8192
+
+#endif /* TARGET_ALPHA */
+
+#ifndef ELF_PLATFORM
+#define ELF_PLATFORM (NULL)
+#endif
+
+#ifndef ELF_HWCAP
+#define ELF_HWCAP 0
+#endif
+
+#ifdef TARGET_ABI32
+#undef ELF_CLASS
+#define ELF_CLASS ELFCLASS32
+#undef bswaptls
+#define bswaptls(ptr) bswap32s(ptr)
+#endif
+
+#include "elf.h"
+
+struct exec
+{
+  unsigned int a_info;   /* Use macros N_MAGIC, etc for access */
+  unsigned int a_text;   /* length of text, in bytes */
+  unsigned int a_data;   /* length of data, in bytes */
+  unsigned int a_bss;    /* length of uninitialized data area, in bytes */
+  unsigned int a_syms;   /* length of symbol table data in file, in bytes */
+  unsigned int a_entry;  /* start address */
+  unsigned int a_trsize; /* length of relocation info for text, in bytes */
+  unsigned int a_drsize; /* length of relocation info for data, in bytes */
+};
+
+
+#define N_MAGIC(exec) ((exec).a_info & 0xffff)
+#define OMAGIC 0407
+#define NMAGIC 0410
+#define ZMAGIC 0413
+#define QMAGIC 0314
+
+/* max code+data+bss space allocated to elf interpreter */
+#define INTERP_MAP_SIZE (32 * 1024 * 1024)
+
+/* max code+data+bss+brk space allocated to ET_DYN executables */
+#define ET_DYN_MAP_SIZE (128 * 1024 * 1024)
+
+/* Necessary parameters */
+#define TARGET_ELF_EXEC_PAGESIZE TARGET_PAGE_SIZE
+#define TARGET_ELF_PAGESTART(_v) ((_v) & ~(unsigned long)(TARGET_ELF_EXEC_PAGESIZE-1))
+#define TARGET_ELF_PAGEOFFSET(_v) ((_v) & (TARGET_ELF_EXEC_PAGESIZE-1))
+
+#define INTERPRETER_NONE 0
+#define INTERPRETER_AOUT 1
+#define INTERPRETER_ELF 2
+
+#define DLINFO_ITEMS 12
+
+static inline void memcpy_fromfs(void * to, const void * from, unsigned long n)
+{
+        memcpy(to, from, n);
+}
+
+static int load_aout_interp(void * exptr, int interp_fd);
+
+#ifdef BSWAP_NEEDED
+static void bswap_ehdr(struct elfhdr *ehdr)
+{
+    bswap16s(&ehdr->e_type);                    /* Object file type */
+    bswap16s(&ehdr->e_machine);         /* Architecture */
+    bswap32s(&ehdr->e_version);         /* Object file version */
+    bswaptls(&ehdr->e_entry);           /* Entry point virtual address */
+    bswaptls(&ehdr->e_phoff);           /* Program header table file offset */
+    bswaptls(&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 bswap_phdr(struct elf_phdr *phdr)
+{
+    bswap32s(&phdr->p_type);                    /* Segment type */
+    bswaptls(&phdr->p_offset);          /* Segment file offset */
+    bswaptls(&phdr->p_vaddr);           /* Segment virtual address */
+    bswaptls(&phdr->p_paddr);           /* Segment physical address */
+    bswaptls(&phdr->p_filesz);          /* Segment size in file */
+    bswaptls(&phdr->p_memsz);           /* Segment size in memory */
+    bswap32s(&phdr->p_flags);           /* Segment flags */
+    bswaptls(&phdr->p_align);           /* Segment alignment */
+}
+
+static void bswap_shdr(struct elf_shdr *shdr)
+{
+    bswap32s(&shdr->sh_name);
+    bswap32s(&shdr->sh_type);
+    bswaptls(&shdr->sh_flags);
+    bswaptls(&shdr->sh_addr);
+    bswaptls(&shdr->sh_offset);
+    bswaptls(&shdr->sh_size);
+    bswap32s(&shdr->sh_link);
+    bswap32s(&shdr->sh_info);
+    bswaptls(&shdr->sh_addralign);
+    bswaptls(&shdr->sh_entsize);
+}
+
+static void bswap_sym(struct elf_sym *sym)
+{
+    bswap32s(&sym->st_name);
+    bswaptls(&sym->st_value);
+    bswaptls(&sym->st_size);
+    bswap16s(&sym->st_shndx);
+}
+#endif
+
+/*
+ * 'copy_elf_strings()' copies argument/envelope strings from user
+ * memory to free pages in kernel mem. These are in a format ready
+ * to be put directly into the top of new user memory.
+ *
+ */
+static abi_ulong copy_elf_strings(int argc,char ** argv, void **page,
+                                  abi_ulong p)
+{
+    char *tmp, *tmp1, *pag = NULL;
+    int len, offset = 0;
+
+    if (!p) {
+        return 0;       /* bullet-proofing */
+    }
+    while (argc-- > 0) {
+        tmp = argv[argc];
+        if (!tmp) {
+            fprintf(stderr, "VFS: argc is wrong");
+            exit(-1);
+        }
+        tmp1 = tmp;
+        while (*tmp++);
+        len = tmp - tmp1;
+        if (p < len) {  /* this shouldn't happen - 128kB */
+                return 0;
+        }
+        while (len) {
+            --p; --tmp; --len;
+            if (--offset < 0) {
+                offset = p % TARGET_PAGE_SIZE;
+                pag = (char *)page[p/TARGET_PAGE_SIZE];
+                if (!pag) {
+                    pag = g_try_malloc0(TARGET_PAGE_SIZE);
+                    page[p/TARGET_PAGE_SIZE] = pag;
+                    if (!pag)
+                        return 0;
+                }
+            }
+            if (len == 0 || offset == 0) {
+                *(pag + offset) = *tmp;
+            }
+            else {
+              int bytes_to_copy = (len > offset) ? offset : len;
+              tmp -= bytes_to_copy;
+              p -= bytes_to_copy;
+              offset -= bytes_to_copy;
+              len -= bytes_to_copy;
+              memcpy_fromfs(pag + offset, tmp, bytes_to_copy + 1);
+            }
+        }
+    }
+    return p;
+}
+
+static abi_ulong setup_arg_pages(abi_ulong p, struct linux_binprm *bprm,
+                                 struct image_info *info)
+{
+    abi_ulong stack_base, size, error;
+    int i;
+
+    /* Create enough stack to hold everything.  If we don't use
+     * it for args, we'll use it for something else...
+     */
+    size = x86_stack_size;
+    if (size < MAX_ARG_PAGES*TARGET_PAGE_SIZE)
+        size = MAX_ARG_PAGES*TARGET_PAGE_SIZE;
+    error = target_mmap(0,
+                        size + qemu_host_page_size,
+                        PROT_READ | PROT_WRITE,
+                        MAP_PRIVATE | MAP_ANON,
+                        -1, 0);
+    if (error == -1) {
+        perror("stk mmap");
+        exit(-1);
+    }
+    /* we reserve one extra page at the top of the stack as guard */
+    target_mprotect(error + size, qemu_host_page_size, PROT_NONE);
+
+    stack_base = error + size - MAX_ARG_PAGES*TARGET_PAGE_SIZE;
+    p += stack_base;
+
+    for (i = 0 ; i < MAX_ARG_PAGES ; i++) {
+        if (bprm->page[i]) {
+            info->rss++;
+            /* FIXME - check return value of memcpy_to_target() for failure */
+            memcpy_to_target(stack_base, bprm->page[i], TARGET_PAGE_SIZE);
+            g_free(bprm->page[i]);
+        }
+        stack_base += TARGET_PAGE_SIZE;
+    }
+    return p;
+}
+
+static void set_brk(abi_ulong start, abi_ulong end)
+{
+        /* page-align the start and end addresses... */
+        start = HOST_PAGE_ALIGN(start);
+        end = HOST_PAGE_ALIGN(end);
+        if (end <= start)
+                return;
+        if(target_mmap(start, end - start,
+                       PROT_READ | PROT_WRITE | PROT_EXEC,
+                       MAP_FIXED | MAP_PRIVATE | MAP_ANON, -1, 0) == -1) {
+            perror("cannot mmap brk");
+            exit(-1);
+        }
+}
+
+
+/* We need to explicitly zero any fractional pages after the data
+   section (i.e. bss).  This would contain the junk from the file that
+   should not be in memory. */
+static void padzero(abi_ulong elf_bss, abi_ulong last_bss)
+{
+        abi_ulong nbyte;
+
+        if (elf_bss >= last_bss)
+                return;
+
+        /* XXX: this is really a hack : if the real host page size is
+           smaller than the target page size, some pages after the end
+           of the file may not be mapped. A better fix would be to
+           patch target_mmap(), but it is more complicated as the file
+           size must be known */
+        if (qemu_real_host_page_size < qemu_host_page_size) {
+            abi_ulong end_addr, end_addr1;
+            end_addr1 = (elf_bss + qemu_real_host_page_size - 1) &
+                ~(qemu_real_host_page_size - 1);
+            end_addr = HOST_PAGE_ALIGN(elf_bss);
+            if (end_addr1 < end_addr) {
+                mmap((void *)g2h(end_addr1), end_addr - end_addr1,
+                     PROT_READ|PROT_WRITE|PROT_EXEC,
+                     MAP_FIXED|MAP_PRIVATE|MAP_ANON, -1, 0);
+            }
+        }
+
+        nbyte = elf_bss & (qemu_host_page_size-1);
+        if (nbyte) {
+            nbyte = qemu_host_page_size - nbyte;
+            do {
+                /* FIXME - what to do if put_user() fails? */
+                put_user_u8(0, elf_bss);
+                elf_bss++;
+            } while (--nbyte);
+        }
+}
+
+
+static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc,
+                                   struct elfhdr * exec,
+                                   abi_ulong load_addr,
+                                   abi_ulong load_bias,
+                                   abi_ulong interp_load_addr, int ibcs,
+                                   struct image_info *info)
+{
+        abi_ulong sp;
+        int size;
+        abi_ulong u_platform;
+        const char *k_platform;
+        const int n = sizeof(elf_addr_t);
+
+        sp = p;
+        u_platform = 0;
+        k_platform = ELF_PLATFORM;
+        if (k_platform) {
+            size_t len = strlen(k_platform) + 1;
+            sp -= (len + n - 1) & ~(n - 1);
+            u_platform = sp;
+            /* FIXME - check return value of memcpy_to_target() for failure */
+            memcpy_to_target(sp, k_platform, len);
+        }
+        /*
+         * Force 16 byte _final_ alignment here for generality.
+         */
+        sp = sp &~ (abi_ulong)15;
+        size = (DLINFO_ITEMS + 1) * 2;
+        if (k_platform)
+          size += 2;
+#ifdef DLINFO_ARCH_ITEMS
+        size += DLINFO_ARCH_ITEMS * 2;
+#endif
+        size += envc + argc + 2;
+        size += (!ibcs ? 3 : 1);        /* argc itself */
+        size *= n;
+        if (size & 15)
+            sp -= 16 - (size & 15);
+
+        /* This is correct because Linux defines
+         * elf_addr_t as Elf32_Off / Elf64_Off
+         */
+#define NEW_AUX_ENT(id, val) do {               \
+            sp -= n; put_user_ual(val, sp);     \
+            sp -= n; put_user_ual(id, sp);      \
+          } while(0)
+
+        NEW_AUX_ENT (AT_NULL, 0);
+
+        /* There must be exactly DLINFO_ITEMS entries here.  */
+        NEW_AUX_ENT(AT_PHDR, (abi_ulong)(load_addr + exec->e_phoff));
+        NEW_AUX_ENT(AT_PHENT, (abi_ulong)(sizeof (struct elf_phdr)));
+        NEW_AUX_ENT(AT_PHNUM, (abi_ulong)(exec->e_phnum));
+        NEW_AUX_ENT(AT_PAGESZ, (abi_ulong)(TARGET_PAGE_SIZE));
+        NEW_AUX_ENT(AT_BASE, (abi_ulong)(interp_load_addr));
+        NEW_AUX_ENT(AT_FLAGS, (abi_ulong)0);
+        NEW_AUX_ENT(AT_ENTRY, load_bias + exec->e_entry);
+        NEW_AUX_ENT(AT_UID, (abi_ulong) getuid());
+        NEW_AUX_ENT(AT_EUID, (abi_ulong) geteuid());
+        NEW_AUX_ENT(AT_GID, (abi_ulong) getgid());
+        NEW_AUX_ENT(AT_EGID, (abi_ulong) getegid());
+        NEW_AUX_ENT(AT_HWCAP, (abi_ulong) ELF_HWCAP);
+        NEW_AUX_ENT(AT_CLKTCK, (abi_ulong) sysconf(_SC_CLK_TCK));
+        if (k_platform)
+            NEW_AUX_ENT(AT_PLATFORM, u_platform);
+#ifdef ARCH_DLINFO
+        /*
+         * ARCH_DLINFO must come last so platform specific code can enforce
+         * special alignment requirements on the AUXV if necessary (eg. PPC).
+         */
+        ARCH_DLINFO;
+#endif
+#undef NEW_AUX_ENT
+
+        sp = loader_build_argptr(envc, argc, sp, p, !ibcs);
+        return sp;
+}
+
+
+static abi_ulong load_elf_interp(struct elfhdr * interp_elf_ex,
+                                 int interpreter_fd,
+                                 abi_ulong *interp_load_addr)
+{
+        struct elf_phdr *elf_phdata  =  NULL;
+        struct elf_phdr *eppnt;
+        abi_ulong load_addr = 0;
+        int load_addr_set = 0;
+        int retval;
+        abi_ulong last_bss, elf_bss;
+        abi_ulong error;
+        int i;
+
+        elf_bss = 0;
+        last_bss = 0;
+        error = 0;
+
+#ifdef BSWAP_NEEDED
+        bswap_ehdr(interp_elf_ex);
+#endif
+        /* First of all, some simple consistency checks */
+        if ((interp_elf_ex->e_type != ET_EXEC &&
+             interp_elf_ex->e_type != ET_DYN) ||
+           !elf_check_arch(interp_elf_ex->e_machine)) {
+                return ~((abi_ulong)0UL);
+        }
+
+
+        /* Now read in all of the header information */
+
+        if (sizeof(struct elf_phdr) * interp_elf_ex->e_phnum > TARGET_PAGE_SIZE)
+            return ~(abi_ulong)0UL;
+
+        elf_phdata =  (struct elf_phdr *)
+                malloc(sizeof(struct elf_phdr) * interp_elf_ex->e_phnum);
+
+        if (!elf_phdata)
+          return ~((abi_ulong)0UL);
+
+        /*
+         * If the size of this structure has changed, then punt, since
+         * we will be doing the wrong thing.
+         */
+        if (interp_elf_ex->e_phentsize != sizeof(struct elf_phdr)) {
+            free(elf_phdata);
+            return ~((abi_ulong)0UL);
+        }
+
+        retval = lseek(interpreter_fd, interp_elf_ex->e_phoff, SEEK_SET);
+        if(retval >= 0) {
+            retval = read(interpreter_fd,
+                           (char *) elf_phdata,
+                           sizeof(struct elf_phdr) * interp_elf_ex->e_phnum);
+        }
+        if (retval < 0) {
+                perror("load_elf_interp");
+                exit(-1);
+                free (elf_phdata);
+                return retval;
+        }
+#ifdef BSWAP_NEEDED
+        eppnt = elf_phdata;
+        for (i=0; i<interp_elf_ex->e_phnum; i++, eppnt++) {
+            bswap_phdr(eppnt);
+        }
+#endif
+
+        if (interp_elf_ex->e_type == ET_DYN) {
+            /* in order to avoid hardcoding the interpreter load
+               address in qemu, we allocate a big enough memory zone */
+            error = target_mmap(0, INTERP_MAP_SIZE,
+                                PROT_NONE, MAP_PRIVATE | MAP_ANON,
+                                -1, 0);
+            if (error == -1) {
+                perror("mmap");
+                exit(-1);
+            }
+            load_addr = error;
+            load_addr_set = 1;
+        }
+
+        eppnt = elf_phdata;
+        for(i=0; i<interp_elf_ex->e_phnum; i++, eppnt++)
+          if (eppnt->p_type == PT_LOAD) {
+            int elf_type = MAP_PRIVATE | MAP_DENYWRITE;
+            int elf_prot = 0;
+            abi_ulong vaddr = 0;
+            abi_ulong k;
+
+            if (eppnt->p_flags & PF_R) elf_prot =  PROT_READ;
+            if (eppnt->p_flags & PF_W) elf_prot |= PROT_WRITE;
+            if (eppnt->p_flags & PF_X) elf_prot |= PROT_EXEC;
+            if (interp_elf_ex->e_type == ET_EXEC || load_addr_set) {
+                elf_type |= MAP_FIXED;
+                vaddr = eppnt->p_vaddr;
+            }
+            error = target_mmap(load_addr+TARGET_ELF_PAGESTART(vaddr),
+                 eppnt->p_filesz + TARGET_ELF_PAGEOFFSET(eppnt->p_vaddr),
+                 elf_prot,
+                 elf_type,
+                 interpreter_fd,
+                 eppnt->p_offset - TARGET_ELF_PAGEOFFSET(eppnt->p_vaddr));
+
+            if (error == -1) {
+              /* Real error */
+              close(interpreter_fd);
+              free(elf_phdata);
+              return ~((abi_ulong)0UL);
+            }
+
+            if (!load_addr_set && interp_elf_ex->e_type == ET_DYN) {
+              load_addr = error;
+              load_addr_set = 1;
+            }
+
+            /*
+             * Find the end of the file  mapping for this phdr, and keep
+             * track of the largest address we see for this.
+             */
+            k = load_addr + eppnt->p_vaddr + eppnt->p_filesz;
+            if (k > elf_bss) elf_bss = k;
+
+            /*
+             * Do the same thing for the memory mapping - between
+             * elf_bss and last_bss is the bss section.
+             */
+            k = load_addr + eppnt->p_memsz + eppnt->p_vaddr;
+            if (k > last_bss) last_bss = k;
+          }
+
+        /* Now use mmap to map the library into memory. */
+
+        close(interpreter_fd);
+
+        /*
+         * Now fill out the bss section.  First pad the last page up
+         * to the page boundary, and then perform a mmap to make sure
+         * that there are zeromapped pages up to and including the last
+         * bss page.
+         */
+        padzero(elf_bss, last_bss);
+        elf_bss = TARGET_ELF_PAGESTART(elf_bss + qemu_host_page_size - 1); /* What we have mapped so far */
+
+        /* Map the last of the bss segment */
+        if (last_bss > elf_bss) {
+            target_mmap(elf_bss, last_bss-elf_bss,
+                        PROT_READ|PROT_WRITE|PROT_EXEC,
+                        MAP_FIXED|MAP_PRIVATE|MAP_ANON, -1, 0);
+        }
+        free(elf_phdata);
+
+        *interp_load_addr = load_addr;
+        return ((abi_ulong) interp_elf_ex->e_entry) + load_addr;
+}
+
+static int symfind(const void *s0, const void *s1)
+{
+    target_ulong addr = *(target_ulong *)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 *lookup_symbolxx(struct syminfo *s, target_ulong orig_addr)
+{
+#if ELF_CLASS == ELFCLASS32
+    struct elf_sym *syms = s->disas_symtab.elf32;
+#else
+    struct elf_sym *syms = s->disas_symtab.elf64;
+#endif
+
+    // binary search
+    struct elf_sym *sym;
+
+    sym = bsearch(&orig_addr, syms, s->disas_num_syms, sizeof(*syms), symfind);
+    if (sym != NULL) {
+        return s->disas_strtab + sym->st_name;
+    }
+
+    return "";
+}
+
+/* FIXME: This should use elf_ops.h  */
+static int symcmp(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);
+}
+
+/* Best attempt to load symbols from this ELF object. */
+static void load_symbols(struct elfhdr *hdr, int fd)
+{
+    unsigned int i, nsyms;
+    struct elf_shdr sechdr, symtab, strtab;
+    char *strings;
+    struct syminfo *s;
+    struct elf_sym *syms, *new_syms;
+
+    lseek(fd, hdr->e_shoff, SEEK_SET);
+    for (i = 0; i < hdr->e_shnum; i++) {
+        if (read(fd, &sechdr, sizeof(sechdr)) != sizeof(sechdr))
+            return;
+#ifdef BSWAP_NEEDED
+        bswap_shdr(&sechdr);
+#endif
+        if (sechdr.sh_type == SHT_SYMTAB) {
+            symtab = sechdr;
+            lseek(fd, hdr->e_shoff
+                  + sizeof(sechdr) * sechdr.sh_link, SEEK_SET);
+            if (read(fd, &strtab, sizeof(strtab))
+                != sizeof(strtab))
+                return;
+#ifdef BSWAP_NEEDED
+            bswap_shdr(&strtab);
+#endif
+            goto found;
+        }
+    }
+    return; /* Shouldn't happen... */
+
+ found:
+    /* Now know where the strtab and symtab are.  Snarf them. */
+    s = malloc(sizeof(*s));
+    syms = malloc(symtab.sh_size);
+    if (!syms) {
+        free(s);
+        return;
+    }
+    s->disas_strtab = strings = malloc(strtab.sh_size);
+    if (!s->disas_strtab) {
+        free(s);
+        free(syms);
+        return;
+    }
+
+    lseek(fd, symtab.sh_offset, SEEK_SET);
+    if (read(fd, syms, symtab.sh_size) != symtab.sh_size) {
+        free(s);
+        free(syms);
+        free(strings);
+        return;
+    }
+
+    nsyms = symtab.sh_size / sizeof(struct elf_sym);
+
+    i = 0;
+    while (i < nsyms) {
+#ifdef BSWAP_NEEDED
+        bswap_sym(syms + i);
+#endif
+        // Throw away entries which we do not need.
+        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 defined(TARGET_ARM) || defined (TARGET_MIPS)
+        /* The bottom address bit marks a Thumb or MIPS16 symbol.  */
+        syms[i].st_value &= ~(target_ulong)1;
+#endif
+        i++;
+    }
+
+     /* Attempt to free the storage associated with the local symbols
+        that we threw away.  Whether or not this has any effect on the
+        memory allocation depends on the malloc implementation and how
+        many symbols we managed to discard. */
+    new_syms = realloc(syms, nsyms * sizeof(*syms));
+    if (new_syms == NULL) {
+        free(s);
+        free(syms);
+        free(strings);
+        return;
+    }
+    syms = new_syms;
+
+    qsort(syms, nsyms, sizeof(*syms), symcmp);
+
+    lseek(fd, strtab.sh_offset, SEEK_SET);
+    if (read(fd, strings, strtab.sh_size) != strtab.sh_size) {
+        free(s);
+        free(syms);
+        free(strings);
+        return;
+    }
+    s->disas_num_syms = nsyms;
+#if ELF_CLASS == ELFCLASS32
+    s->disas_symtab.elf32 = syms;
+    s->lookup_symbol = (lookup_symbol_t)lookup_symbolxx;
+#else
+    s->disas_symtab.elf64 = syms;
+    s->lookup_symbol = (lookup_symbol_t)lookup_symbolxx;
+#endif
+    s->next = syminfos;
+    syminfos = s;
+}
+
+int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
+                    struct image_info * info)
+{
+    struct elfhdr elf_ex;
+    struct elfhdr interp_elf_ex;
+    struct exec interp_ex;
+    int interpreter_fd = -1; /* avoid warning */
+    abi_ulong load_addr, load_bias;
+    int load_addr_set = 0;
+    unsigned int interpreter_type = INTERPRETER_NONE;
+    unsigned char ibcs2_interpreter;
+    int i;
+    abi_ulong mapped_addr;
+    struct elf_phdr * elf_ppnt;
+    struct elf_phdr *elf_phdata;
+    abi_ulong elf_bss, k, elf_brk;
+    int retval;
+    char * elf_interpreter;
+    abi_ulong elf_entry, interp_load_addr = 0;
+    int status;
+    abi_ulong start_code, end_code, start_data, end_data;
+    abi_ulong reloc_func_desc = 0;
+    abi_ulong elf_stack;
+    char passed_fileno[6];
+
+    ibcs2_interpreter = 0;
+    status = 0;
+    load_addr = 0;
+    load_bias = 0;
+    elf_ex = *((struct elfhdr *) bprm->buf);          /* exec-header */
+#ifdef BSWAP_NEEDED
+    bswap_ehdr(&elf_ex);
+#endif
+
+    /* First of all, some simple consistency checks */
+    if ((elf_ex.e_type != ET_EXEC && elf_ex.e_type != ET_DYN) ||
+                                (! elf_check_arch(elf_ex.e_machine))) {
+            return -ENOEXEC;
+    }
+
+    bprm->p = copy_elf_strings(1, &bprm->filename, bprm->page, bprm->p);
+    bprm->p = copy_elf_strings(bprm->envc,bprm->envp,bprm->page,bprm->p);
+    bprm->p = copy_elf_strings(bprm->argc,bprm->argv,bprm->page,bprm->p);
+    if (!bprm->p) {
+        retval = -E2BIG;
+    }
+
+    /* Now read in all of the header information */
+    elf_phdata = (struct elf_phdr *)malloc(elf_ex.e_phentsize*elf_ex.e_phnum);
+    if (elf_phdata == NULL) {
+        return -ENOMEM;
+    }
+
+    retval = lseek(bprm->fd, elf_ex.e_phoff, SEEK_SET);
+    if(retval > 0) {
+        retval = read(bprm->fd, (char *) elf_phdata,
+                                elf_ex.e_phentsize * elf_ex.e_phnum);
+    }
+
+    if (retval < 0) {
+        perror("load_elf_binary");
+        exit(-1);
+        free (elf_phdata);
+        return -errno;
+    }
+
+#ifdef BSWAP_NEEDED
+    elf_ppnt = elf_phdata;
+    for (i=0; i<elf_ex.e_phnum; i++, elf_ppnt++) {
+        bswap_phdr(elf_ppnt);
+    }
+#endif
+    elf_ppnt = elf_phdata;
+
+    elf_bss = 0;
+    elf_brk = 0;
+
+
+    elf_stack = ~((abi_ulong)0UL);
+    elf_interpreter = NULL;
+    start_code = ~((abi_ulong)0UL);
+    end_code = 0;
+    start_data = 0;
+    end_data = 0;
+    interp_ex.a_info = 0;
+
+    for(i=0;i < elf_ex.e_phnum; i++) {
+        if (elf_ppnt->p_type == PT_INTERP) {
+            if ( elf_interpreter != NULL )
+            {
+                free (elf_phdata);
+                free(elf_interpreter);
+                close(bprm->fd);
+                return -EINVAL;
+            }
+
+            /* This is the program interpreter used for
+             * shared libraries - for now assume that this
+             * is an a.out format binary
+             */
+
+            elf_interpreter = (char *)malloc(elf_ppnt->p_filesz);
+
+            if (elf_interpreter == NULL) {
+                free (elf_phdata);
+                close(bprm->fd);
+                return -ENOMEM;
+            }
+
+            retval = lseek(bprm->fd, elf_ppnt->p_offset, SEEK_SET);
+            if(retval >= 0) {
+                retval = read(bprm->fd, elf_interpreter, elf_ppnt->p_filesz);
+            }
+            if(retval < 0) {
+                perror("load_elf_binary2");
+                exit(-1);
+            }
+
+            /* If the program interpreter is one of these two,
+               then assume an iBCS2 image. Otherwise assume
+               a native linux image. */
+
+            /* JRP - Need to add X86 lib dir stuff here... */
+
+            if (strcmp(elf_interpreter,"/usr/lib/libc.so.1") == 0 ||
+                strcmp(elf_interpreter,"/usr/lib/ld.so.1") == 0) {
+              ibcs2_interpreter = 1;
+            }
+
+#if 0
+            printf("Using ELF interpreter %s\n", path(elf_interpreter));
+#endif
+            if (retval >= 0) {
+                retval = open(path(elf_interpreter), O_RDONLY);
+                if(retval >= 0) {
+                    interpreter_fd = retval;
+                }
+                else {
+                    perror(elf_interpreter);
+                    exit(-1);
+                    /* retval = -errno; */
+                }
+            }
+
+            if (retval >= 0) {
+                retval = lseek(interpreter_fd, 0, SEEK_SET);
+                if(retval >= 0) {
+                    retval = read(interpreter_fd,bprm->buf,128);
+                }
+            }
+            if (retval >= 0) {
+                interp_ex = *((struct exec *) bprm->buf); /* aout exec-header */
+                interp_elf_ex = *((struct elfhdr *) bprm->buf); /* elf exec-header */
+            }
+            if (retval < 0) {
+                perror("load_elf_binary3");
+                exit(-1);
+                free (elf_phdata);
+                free(elf_interpreter);
+                close(bprm->fd);
+                return retval;
+            }
+        }
+        elf_ppnt++;
+    }
+
+    /* Some simple consistency checks for the interpreter */
+    if (elf_interpreter){
+        interpreter_type = INTERPRETER_ELF | INTERPRETER_AOUT;
+
+        /* Now figure out which format our binary is */
+        if ((N_MAGIC(interp_ex) != OMAGIC) && (N_MAGIC(interp_ex) != ZMAGIC) &&
+                (N_MAGIC(interp_ex) != QMAGIC)) {
+          interpreter_type = INTERPRETER_ELF;
+        }
+
+        if (interp_elf_ex.e_ident[0] != 0x7f ||
+                strncmp((char *)&interp_elf_ex.e_ident[1], "ELF",3) != 0) {
+            interpreter_type &= ~INTERPRETER_ELF;
+        }
+
+        if (!interpreter_type) {
+            free(elf_interpreter);
+            free(elf_phdata);
+            close(bprm->fd);
+            return -ELIBBAD;
+        }
+    }
+
+    /* OK, we are done with that, now set up the arg stuff,
+       and then start this sucker up */
+
+    {
+        char * passed_p;
+
+        if (interpreter_type == INTERPRETER_AOUT) {
+            snprintf(passed_fileno, sizeof(passed_fileno), "%d", bprm->fd);
+            passed_p = passed_fileno;
+
+            if (elf_interpreter) {
+                bprm->p = copy_elf_strings(1,&passed_p,bprm->page,bprm->p);
+                bprm->argc++;
+            }
+        }
+        if (!bprm->p) {
+            if (elf_interpreter) {
+                free(elf_interpreter);
+            }
+            free (elf_phdata);
+            close(bprm->fd);
+            return -E2BIG;
+        }
+    }
+
+    /* OK, This is the point of no return */
+    info->end_data = 0;
+    info->end_code = 0;
+    info->start_mmap = (abi_ulong)ELF_START_MMAP;
+    info->mmap = 0;
+    elf_entry = (abi_ulong) elf_ex.e_entry;
+
+#if defined(CONFIG_USE_GUEST_BASE)
+    /*
+     * In case where user has not explicitly set the guest_base, we
+     * probe here that should we set it automatically.
+     */
+    if (!have_guest_base) {
+        /*
+         * Go through ELF program header table and find out whether
+	 * any of the segments drop below our current mmap_min_addr and
+         * in that case set guest_base to corresponding address.
+         */
+        for (i = 0, elf_ppnt = elf_phdata; i < elf_ex.e_phnum;
+            i++, elf_ppnt++) {
+            if (elf_ppnt->p_type != PT_LOAD)
+                continue;
+            if (HOST_PAGE_ALIGN(elf_ppnt->p_vaddr) < mmap_min_addr) {
+                guest_base = HOST_PAGE_ALIGN(mmap_min_addr);
+                break;
+            }
+        }
+    }
+#endif /* CONFIG_USE_GUEST_BASE */
+
+    /* Do this so that we can load the interpreter, if need be.  We will
+       change some of these later */
+    info->rss = 0;
+    bprm->p = setup_arg_pages(bprm->p, bprm, info);
+    info->start_stack = bprm->p;
+
+    /* Now we do a little grungy work by mmaping the ELF image into
+     * the correct location in memory.  At this point, we assume that
+     * the image should be loaded at fixed address, not at a variable
+     * address.
+     */
+
+    for(i = 0, elf_ppnt = elf_phdata; i < elf_ex.e_phnum; i++, elf_ppnt++) {
+        int elf_prot = 0;
+        int elf_flags = 0;
+        abi_ulong error;
+
+        if (elf_ppnt->p_type != PT_LOAD)
+            continue;
+
+        if (elf_ppnt->p_flags & PF_R) elf_prot |= PROT_READ;
+        if (elf_ppnt->p_flags & PF_W) elf_prot |= PROT_WRITE;
+        if (elf_ppnt->p_flags & PF_X) elf_prot |= PROT_EXEC;
+        elf_flags = MAP_PRIVATE | MAP_DENYWRITE;
+        if (elf_ex.e_type == ET_EXEC || load_addr_set) {
+            elf_flags |= MAP_FIXED;
+        } else if (elf_ex.e_type == ET_DYN) {
+            /* Try and get dynamic programs out of the way of the default mmap
+               base, as well as whatever program they might try to exec.  This
+               is because the brk will follow the loader, and is not movable.  */
+            /* NOTE: for qemu, we do a big mmap to get enough space
+               without hardcoding any address */
+            error = target_mmap(0, ET_DYN_MAP_SIZE,
+                                PROT_NONE, MAP_PRIVATE | MAP_ANON,
+                                -1, 0);
+            if (error == -1) {
+                perror("mmap");
+                exit(-1);
+            }
+            load_bias = TARGET_ELF_PAGESTART(error - elf_ppnt->p_vaddr);
+        }
+
+        error = target_mmap(TARGET_ELF_PAGESTART(load_bias + elf_ppnt->p_vaddr),
+                            (elf_ppnt->p_filesz +
+                             TARGET_ELF_PAGEOFFSET(elf_ppnt->p_vaddr)),
+                            elf_prot,
+                            (MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE),
+                            bprm->fd,
+                            (elf_ppnt->p_offset -
+                             TARGET_ELF_PAGEOFFSET(elf_ppnt->p_vaddr)));
+        if (error == -1) {
+            perror("mmap");
+            exit(-1);
+        }
+
+#ifdef LOW_ELF_STACK
+        if (TARGET_ELF_PAGESTART(elf_ppnt->p_vaddr) < elf_stack)
+            elf_stack = TARGET_ELF_PAGESTART(elf_ppnt->p_vaddr);
+#endif
+
+        if (!load_addr_set) {
+            load_addr_set = 1;
+            load_addr = elf_ppnt->p_vaddr - elf_ppnt->p_offset;
+            if (elf_ex.e_type == ET_DYN) {
+                load_bias += error -
+                    TARGET_ELF_PAGESTART(load_bias + elf_ppnt->p_vaddr);
+                load_addr += load_bias;
+                reloc_func_desc = load_bias;
+            }
+        }
+        k = elf_ppnt->p_vaddr;
+        if (k < start_code)
+            start_code = k;
+        if (start_data < k)
+            start_data = k;
+        k = elf_ppnt->p_vaddr + elf_ppnt->p_filesz;
+        if (k > elf_bss)
+            elf_bss = k;
+        if ((elf_ppnt->p_flags & PF_X) && end_code <  k)
+            end_code = k;
+        if (end_data < k)
+            end_data = k;
+        k = elf_ppnt->p_vaddr + elf_ppnt->p_memsz;
+        if (k > elf_brk) elf_brk = k;
+    }
+
+    elf_entry += load_bias;
+    elf_bss += load_bias;
+    elf_brk += load_bias;
+    start_code += load_bias;
+    end_code += load_bias;
+    start_data += load_bias;
+    end_data += load_bias;
+
+    if (elf_interpreter) {
+        if (interpreter_type & 1) {
+            elf_entry = load_aout_interp(&interp_ex, interpreter_fd);
+        }
+        else if (interpreter_type & 2) {
+            elf_entry = load_elf_interp(&interp_elf_ex, interpreter_fd,
+                                            &interp_load_addr);
+        }
+        reloc_func_desc = interp_load_addr;
+
+        close(interpreter_fd);
+        free(elf_interpreter);
+
+        if (elf_entry == ~((abi_ulong)0UL)) {
+            printf("Unable to load interpreter\n");
+            free(elf_phdata);
+            exit(-1);
+            return 0;
+        }
+    }
+
+    free(elf_phdata);
+
+    if (qemu_log_enabled())
+        load_symbols(&elf_ex, bprm->fd);
+
+    if (interpreter_type != INTERPRETER_AOUT) close(bprm->fd);
+    info->personality = (ibcs2_interpreter ? PER_SVR4 : PER_LINUX);
+
+#ifdef LOW_ELF_STACK
+    info->start_stack = bprm->p = elf_stack - 4;
+#endif
+    bprm->p = create_elf_tables(bprm->p,
+                    bprm->argc,
+                    bprm->envc,
+                    &elf_ex,
+                    load_addr, load_bias,
+                    interp_load_addr,
+                    (interpreter_type == INTERPRETER_AOUT ? 0 : 1),
+                    info);
+    info->load_addr = reloc_func_desc;
+    info->start_brk = info->brk = elf_brk;
+    info->end_code = end_code;
+    info->start_code = start_code;
+    info->start_data = start_data;
+    info->end_data = end_data;
+    info->start_stack = bprm->p;
+
+    /* Calling set_brk effectively mmaps the pages that we need for the bss and break
+       sections */
+    set_brk(elf_bss, elf_brk);
+
+    padzero(elf_bss, elf_brk);
+
+#if 0
+    printf("(start_brk) %x\n" , info->start_brk);
+    printf("(end_code) %x\n" , info->end_code);
+    printf("(start_code) %x\n" , info->start_code);
+    printf("(end_data) %x\n" , info->end_data);
+    printf("(start_stack) %x\n" , info->start_stack);
+    printf("(brk) %x\n" , info->brk);
+#endif
+
+    if ( info->personality == PER_SVR4 )
+    {
+            /* Why this, you ask???  Well SVr4 maps page 0 as read-only,
+               and some applications "depend" upon this behavior.
+               Since we do not have the power to recompile these, we
+               emulate the SVr4 behavior.  Sigh.  */
+            mapped_addr = target_mmap(0, qemu_host_page_size, PROT_READ | PROT_EXEC,
+                                      MAP_FIXED | MAP_PRIVATE, -1, 0);
+    }
+
+    info->entry = elf_entry;
+
+    return 0;
+}
+
+static int load_aout_interp(void * exptr, int interp_fd)
+{
+    printf("a.out interpreter not yet supported\n");
+    return(0);
+}
+
+void do_init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+    init_thread(regs, infop);
+}