diff --git a/xen/arch/arm/Makefile b/xen/arch/arm/Makefile
index 0328b50..eae5cb3 100644
--- a/xen/arch/arm/Makefile
+++ b/xen/arch/arm/Makefile
@@ -40,6 +40,7 @@ obj-y += device.o
 obj-y += decode.o
 obj-y += processor.o
 obj-y += smc.o
+obj-$(CONFIG_XSPLICE) += xsplice.o
 
 #obj-bin-y += ....o
 
diff --git a/xen/arch/arm/xsplice.c b/xen/arch/arm/xsplice.c
new file mode 100644
index 0000000..2d07415
--- /dev/null
+++ b/xen/arch/arm/xsplice.c
@@ -0,0 +1,55 @@
+/*
+ *  Copyright (C) 2016 Citrix Systems R&D Ltd.
+ */
+#include <xen/lib.h>
+#include <xen/errno.h>
+#include <xen/xsplice_elf.h>
+#include <xen/xsplice.h>
+
+int arch_xsplice_verify_elf(const struct xsplice_elf *elf)
+{
+    return -ENOSYS;
+}
+
+int arch_xsplice_perform_rel(struct xsplice_elf *elf,
+                             const struct xsplice_elf_sec *base,
+                             const struct xsplice_elf_sec *rela)
+{
+    return -ENOSYS;
+}
+
+int arch_xsplice_perform_rela(struct xsplice_elf *elf,
+                              const struct xsplice_elf_sec *base,
+                              const struct xsplice_elf_sec *rela)
+{
+    return -ENOSYS;
+}
+
+void *arch_xsplice_alloc_payload(unsigned int pages, mfn_t **mfn)
+{
+    return NULL;
+}
+
+int arch_xsplice_secure(void *va, unsigned int pages, enum va_type type,
+                        const mfn_t *mfn)
+{
+    return -ENOSYS;
+}
+
+void arch_xsplice_free_payload(void *va)
+{
+}
+
+void arch_xsplice_init(void)
+{
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/xen/arch/x86/Makefile b/xen/arch/x86/Makefile
index 729065b..8a6a7d5 100644
--- a/xen/arch/x86/Makefile
+++ b/xen/arch/x86/Makefile
@@ -64,6 +64,7 @@ obj-y += vm_event.o
 obj-y += xstate.o
 
 obj-$(crash_debug) += gdbstub.o
+obj-$(CONFIG_XSPLICE) += xsplice.o
 
 x86_emulate.o: x86_emulate/x86_emulate.c x86_emulate/x86_emulate.h
 
diff --git a/xen/arch/x86/xsplice.c b/xen/arch/x86/xsplice.c
new file mode 100644
index 0000000..cadf1f1
--- /dev/null
+++ b/xen/arch/x86/xsplice.c
@@ -0,0 +1,199 @@
+/*
+ * Copyright (C) 2016 Citrix Systems R&D Ltd.
+ */
+
+#include <xen/errno.h>
+#include <xen/lib.h>
+#include <xen/mm.h>
+#include <xen/pfn.h>
+#include <xen/vmap.h>
+#include <xen/xsplice_elf.h>
+#include <xen/xsplice.h>
+
+int arch_xsplice_verify_elf(const struct xsplice_elf *elf)
+{
+
+    const Elf_Ehdr *hdr = elf->hdr;
+
+    if ( hdr->e_machine != EM_X86_64 )
+    {
+        printk(XENLOG_ERR XSPLICE "%s: Invalid ELF payload!\n", elf->name);
+        return -EOPNOTSUPP;
+    }
+
+    return 0;
+}
+
+int arch_xsplice_perform_rel(struct xsplice_elf *elf,
+                             const struct xsplice_elf_sec *base,
+                             const struct xsplice_elf_sec *rela)
+{
+    dprintk(XENLOG_ERR, XSPLICE "%s: SHT_REL relocation unsupported\n",
+            elf->name);
+    return -ENOSYS;
+}
+
+int arch_xsplice_perform_rela(struct xsplice_elf *elf,
+                              const struct xsplice_elf_sec *base,
+                              const struct xsplice_elf_sec *rela)
+{
+    const Elf_RelA *r;
+    unsigned int symndx, i;
+    uint64_t val;
+    uint8_t *dest;
+
+    if ( !rela->sec->sh_entsize || !rela->sec->sh_size ||
+         rela->sec->sh_entsize != sizeof(Elf_RelA) )
+    {
+        dprintk(XENLOG_DEBUG, XSPLICE "%s: Section relative header is corrupted!\n",
+                elf->name);
+        return -EINVAL;
+    }
+
+    for ( i = 0; i < (rela->sec->sh_size / rela->sec->sh_entsize); i++ )
+    {
+        r = rela->data + i * rela->sec->sh_entsize;
+        if ( (unsigned long)r > (unsigned long)(elf->hdr + elf->len) )
+        {
+            dprintk(XENLOG_DEBUG, XSPLICE "%s: Relative entry %u in %s is past end!\n",
+                    elf->name, i, rela->name);
+            return -EINVAL;
+        }
+
+        symndx = ELF64_R_SYM(r->r_info);
+        if ( symndx > elf->nsym )
+        {
+            dprintk(XENLOG_DEBUG, XSPLICE "%s: Relative symbol wants symbol@%u which is past end!\n",
+                    elf->name, symndx);
+            return -EINVAL;
+        }
+
+        dest = base->load_addr + r->r_offset;
+        val = r->r_addend + elf->sym[symndx].sym->st_value;
+
+        switch ( ELF64_R_TYPE(r->r_info) )
+        {
+        case R_X86_64_NONE:
+            break;
+
+        case R_X86_64_64:
+            *(uint64_t *)dest = val;
+            break;
+
+        case R_X86_64_PLT32:
+            /*
+             * Xen uses -fpic which normally uses PLT relocations
+             * except that it sets visibility to hidden which means
+             * that they are not used.  However, when gcc cannot
+             * inline memcpy it emits memcpy with default visibility
+             * which then creates a PLT relocation.  It can just be
+             * treated the same as R_X86_64_PC32.
+             */
+            /* Fall through */
+
+        case R_X86_64_PC32:
+            *(uint32_t *)dest = val - (uint64_t)dest;
+            break;
+
+        default:
+            printk(XENLOG_ERR XSPLICE "%s: Unhandled relocation %lu\n",
+                   elf->name, ELF64_R_TYPE(r->r_info));
+            return -EINVAL;
+        }
+    }
+
+    return 0;
+}
+
+/*
+ * The function prepares a xSplice payload by allocating space which
+ * then can be used for loading the allocated sections, resolving symbols,
+ * performing relocations, etc.
+ */
+void *arch_xsplice_alloc_payload(unsigned int pages, mfn_t **mfn)
+{
+    unsigned int i;
+    void *p;
+
+    ASSERT(pages);
+    ASSERT(mfn && !*mfn);
+
+    p = vmalloc_type(pages * PAGE_SIZE, VMAP_XEN, mfn);
+    WARN_ON(!p);
+    if ( p )
+    {
+        for ( i = 0; i < pages; i++ )
+            clear_page(p + (i * PAGE_SIZE) );
+    }
+    return p;
+}
+
+/*
+ * Once the resolving symbols, performing relocations, etc is complete
+ * we secure the memory by putting in the proper page table attributes
+ * for the desired type.
+ */
+int arch_xsplice_secure(void *va, unsigned int pages, enum va_type type,
+                        const mfn_t *mfn)
+{
+    unsigned long cur;
+    unsigned long start = (unsigned long)va;
+    int flag;
+
+    ASSERT(va);
+    ASSERT(pages);
+
+    if ( type == XSPLICE_VA_RX )
+        flag = PAGE_HYPERVISOR_RX;
+    else if ( type == XSPLICE_VA_RW )
+        flag = PAGE_HYPERVISOR_RW;
+    else
+        flag = PAGE_HYPERVISOR_RO;
+
+    /*
+     * We could walk the pagetable and do the pagetable manipulations
+     * (strip the _PAGE_RW), which would mean also not needing the mfn
+     * array, but there are no generic code for this yet (TODO).
+     *
+     * For right now tear down the pagetables and recreate them.
+     */
+    destroy_xen_mappings(start, start + pages * PAGE_SIZE);
+
+    for ( cur = start; pages--; ++mfn, cur += PAGE_SIZE )
+    {
+        if ( map_pages_to_xen(cur, mfn_x(*mfn), 1, flag) )
+        {
+            if ( cur != start )
+                destroy_xen_mappings(start, cur);
+            return -EINVAL;
+        }
+    }
+
+    return 0;
+}
+
+void arch_xsplice_free_payload(void *va)
+{
+    vfree_type(va, VMAP_XEN);
+}
+
+void arch_xsplice_init(void)
+{
+    void *start, *end;
+
+    start = (void *)xen_virt_end;
+    end = (void *)(XEN_VIRT_END - NR_CPUS * PAGE_SIZE);
+
+    BUG_ON(end <= start);
+
+    vm_init_type(VMAP_XEN, start, end);
+}
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/xen/common/xsplice.c b/xen/common/xsplice.c
index 06f4a7b..10c8166 100644
--- a/xen/common/xsplice.c
+++ b/xen/common/xsplice.c
@@ -13,6 +13,7 @@
 #include <xen/smp.h>
 #include <xen/spinlock.h>
 #include <xen/vmap.h>
+#include <xen/xsplice_elf.h>
 #include <xen/xsplice.h>
 
 #include <asm/event.h>
@@ -28,6 +29,14 @@ struct payload {
     uint32_t state;                      /* One of the XSPLICE_STATE_*. */
     int32_t rc;                          /* 0 or -XEN_EXX. */
     struct list_head list;               /* Linked to 'payload_list'. */
+    void *text_addr;                     /* Virtual address of .text. */
+    size_t text_size;                    /* .. and its size. */
+    void *rw_addr;                       /* Virtual address of .data. */
+    size_t rw_size;                      /* .. and its size (if any). */
+    void *ro_addr;                       /* Virtual address of .rodata. */
+    size_t ro_size;                      /* .. and its size (if any). */
+    size_t pages;                        /* Total pages for [text,rw,ro]_addr */
+    mfn_t *mfn;                          /* The MFNs backing these pages. */
     char name[XEN_XSPLICE_NAME_SIZE];    /* Name of it. */
 };
 
@@ -85,6 +94,178 @@ static struct payload *find_payload(const char *name)
     return found;
 }
 
+/*
+ * Functions related to XEN_SYSCTL_XSPLICE_UPLOAD (see xsplice_upload), and
+ * freeing payload (XEN_SYSCTL_XSPLICE_ACTION:XSPLICE_ACTION_UNLOAD).
+ */
+
+static void free_payload_data(struct payload *payload)
+{
+    /* Set to zero until "move_payload". */
+    if ( !payload->text_addr )
+        return;
+
+    xfree(payload->mfn);
+    payload->mfn = NULL;
+
+    arch_xsplice_free_payload(payload->text_addr);
+
+    payload->text_addr = NULL;
+    payload->ro_addr = NULL;
+    payload->rw_addr = NULL;
+    payload->pages = 0;
+}
+
+/*
+* calc_section computes the size (taking into account section alignment).
+*
+* It also modifies sh_entsize with the offset of from the start of
+* virtual address space. This is used in move_payload to figure out the
+* destination location.
+*/
+static void calc_section(struct xsplice_elf_sec *sec, size_t *size)
+{
+    Elf_Shdr *s;
+    size_t align_size;
+
+    /* Casting away constness since we modify it. */
+    s = (Elf_Shdr *)sec->sec;
+    align_size = ROUNDUP(*size, s->sh_addralign);
+    s->sh_entsize = align_size;
+
+    *size = s->sh_size + align_size;
+}
+
+static int move_payload(struct payload *payload, struct xsplice_elf *elf)
+{
+    uint8_t *buf;
+    unsigned int i;
+    size_t size = 0;
+
+    /* Compute text regions. */
+    for ( i = 1; i < elf->hdr->e_shnum; i++ )
+    {
+        if ( (elf->sec[i].sec->sh_flags & (SHF_ALLOC|SHF_EXECINSTR)) ==
+             (SHF_ALLOC|SHF_EXECINSTR) )
+            calc_section(&elf->sec[i], &payload->text_size);
+    }
+
+    /* Compute rw data. */
+    for ( i = 1; i < elf->hdr->e_shnum; i++ )
+    {
+        if ( (elf->sec[i].sec->sh_flags & SHF_ALLOC) &&
+             !(elf->sec[i].sec->sh_flags & SHF_EXECINSTR) &&
+             (elf->sec[i].sec->sh_flags & SHF_WRITE) )
+            calc_section(&elf->sec[i], &payload->rw_size);
+    }
+
+    /* Compute ro data. */
+    for ( i = 1; i < elf->hdr->e_shnum; i++ )
+    {
+        if ( (elf->sec[i].sec->sh_flags & SHF_ALLOC) &&
+             !(elf->sec[i].sec->sh_flags & SHF_EXECINSTR) &&
+             !(elf->sec[i].sec->sh_flags & SHF_WRITE) )
+            calc_section(&elf->sec[i], &payload->ro_size);
+    }
+
+    /* Do not accept wx. */
+    for ( i = 1; i < elf->hdr->e_shnum; i++ )
+    {
+        if ( !(elf->sec[i].sec->sh_flags & SHF_ALLOC) &&
+             (elf->sec[i].sec->sh_flags & SHF_EXECINSTR) &&
+             (elf->sec[i].sec->sh_flags & SHF_WRITE) )
+        {
+            dprintk(XENLOG_DEBUG, XSPLICE "%s: No WX sections!\n", elf->name);
+            return -EINVAL;
+        }
+    }
+
+    /*
+     * Total of all three regions - RX, RW, and RO. We have to have
+     * keep them in seperate pages so we PAGE_ALIGN the RX and RW to have
+     * them on seperate pages. The last one will by default fall on its
+     * own page.
+     */
+    size = PAGE_ALIGN(payload->text_size) + PAGE_ALIGN(payload->rw_size) +
+                      payload->ro_size;
+
+    size = PFN_UP(size);
+    buf = arch_xsplice_alloc_payload(size, &payload->mfn);
+    if ( !buf )
+    {
+        printk(XENLOG_ERR XSPLICE "%s: Could not allocate memory for payload!\n",
+               elf->name);
+        return -ENOMEM;
+    }
+    payload->pages = size;
+    payload->text_addr = buf;
+    payload->rw_addr = payload->text_addr + PAGE_ALIGN(payload->text_size);
+    payload->ro_addr = payload->rw_addr + PAGE_ALIGN(payload->rw_size);
+
+    for ( i = 1; i < elf->hdr->e_shnum; i++ )
+    {
+        if ( elf->sec[i].sec->sh_flags & SHF_ALLOC )
+        {
+            if ( (elf->sec[i].sec->sh_flags & SHF_EXECINSTR) )
+                 buf = payload->text_addr;
+            else if ( (elf->sec[i].sec->sh_flags & SHF_WRITE) )
+                buf = payload->rw_addr;
+             else
+                buf = payload->ro_addr;
+
+            elf->sec[i].load_addr = buf + elf->sec[i].sec->sh_entsize;
+
+            /* Don't copy NOBITS - such as BSS. */
+            if ( elf->sec[i].sec->sh_type != SHT_NOBITS )
+            {
+                memcpy(elf->sec[i].load_addr, elf->sec[i].data,
+                       elf->sec[i].sec->sh_size);
+                dprintk(XENLOG_DEBUG, XSPLICE "%s: Loaded %s at 0x%p\n",
+                        elf->name, elf->sec[i].name, elf->sec[i].load_addr);
+            }
+        }
+    }
+
+    return 0;
+}
+
+static int secure_payload(struct payload *payload, struct xsplice_elf *elf)
+{
+    int rc;
+    unsigned int text_pages, rw_pages, ro_pages;
+    mfn_t *mfn = payload->mfn;
+
+    ASSERT(mfn);
+
+    text_pages = PFN_UP(payload->text_size);
+    ASSERT(text_pages);
+
+    rc = arch_xsplice_secure(payload->text_addr, text_pages, XSPLICE_VA_RX,
+                             mfn);
+    if ( rc )
+        return rc;
+
+    rw_pages = PFN_UP(payload->rw_size);
+    if ( rw_pages )
+    {
+        rc = arch_xsplice_secure(payload->rw_addr, rw_pages, XSPLICE_VA_RW,
+                                 mfn + text_pages);
+        if ( rc )
+            return rc;
+    }
+
+    ro_pages = PFN_UP(payload->ro_size);
+    if ( ro_pages )
+    {
+        rc = arch_xsplice_secure(payload->ro_addr, ro_pages, XSPLICE_VA_RO,
+                                 mfn + text_pages + rw_pages);
+    }
+
+    ASSERT(ro_pages + rw_pages + text_pages == payload->pages);
+
+    return rc;
+}
+
 /* We MUST be holding the payload_lock spinlock. */
 static void free_payload(struct payload *data)
 {
@@ -92,13 +273,48 @@ static void free_payload(struct payload *data)
     list_del(&data->list);
     payload_cnt--;
     payload_version++;
+    free_payload_data(data);
     xfree(data);
 }
 
+static int load_payload_data(struct payload *payload, void *raw, size_t len)
+{
+    struct xsplice_elf elf = { .name = payload->name, .len = len };
+    int rc = 0;
+
+    rc = xsplice_elf_load(&elf, raw);
+    if ( rc )
+        goto out;
+
+    rc = move_payload(payload, &elf);
+    if ( rc )
+        goto out;
+
+    rc = xsplice_elf_resolve_symbols(&elf);
+    if ( rc )
+        goto out;
+
+    rc = xsplice_elf_perform_relocs(&elf);
+    if ( rc )
+        goto out;
+
+    rc = secure_payload(payload, &elf);
+
+ out:
+    if ( rc )
+        free_payload_data(payload);
+
+    /* Free our temporary data structure. */
+    xsplice_elf_free(&elf);
+
+    return rc;
+}
+
 static int xsplice_upload(xen_sysctl_xsplice_upload_t *upload)
 {
     struct payload *data = NULL, *found;
     char n[XEN_XSPLICE_NAME_SIZE];
+    void *raw_data = NULL;
     int rc;
 
     rc = verify_payload(upload, n);
@@ -127,9 +343,20 @@ static int xsplice_upload(xen_sysctl_xsplice_upload_t *upload)
         goto out;
     }
 
-    rc = 0;
+    rc = -ENOMEM;
+    raw_data = vmalloc(upload->size);
+    if ( !raw_data )
+        goto out;
+
+    rc = -EFAULT;
+    if ( __copy_from_guest(raw_data, upload->payload, upload->size) )
+        goto out;
 
     memcpy(data->name, n, strlen(n));
+    rc = load_payload_data(data, raw_data, upload->size);
+    if ( rc )
+        goto out;
+
     data->state = XSPLICE_STATE_CHECKED;
     INIT_LIST_HEAD(&data->list);
 
@@ -140,6 +367,8 @@ static int xsplice_upload(xen_sysctl_xsplice_upload_t *upload)
  out:
     spin_unlock(&payload_lock);
 
+    vfree(raw_data);
+
     if ( rc )
         xfree(data);
 
@@ -379,8 +608,9 @@ static void xsplice_printall(unsigned char key)
     }
 
     list_for_each_entry ( data, &payload_list, list )
-        printk(" name=%s state=%s(%d)\n", data->name,
-               state2str(data->state), data->state);
+        printk(" name=%s state=%s(%d) %p (.data=%p, .rodata=%p) using %zu pages.\n",
+               data->name, state2str(data->state), data->state, data->text_addr,
+               data->rw_addr, data->ro_addr, data->pages);
 
     spin_unlock(&payload_lock);
 }
@@ -388,6 +618,8 @@ static void xsplice_printall(unsigned char key)
 static int __init xsplice_init(void)
 {
     register_keyhandler('x', xsplice_printall, "print xsplicing info", 1);
+
+    arch_xsplice_init();
     return 0;
 }
 __initcall(xsplice_init);
diff --git a/xen/common/xsplice_elf.c b/xen/common/xsplice_elf.c
index b244d42..59323b8c 100644
--- a/xen/common/xsplice_elf.c
+++ b/xen/common/xsplice_elf.c
@@ -249,9 +249,107 @@ static int elf_get_sym(struct xsplice_elf *elf, const void *data)
     return 0;
 }
 
+int xsplice_elf_resolve_symbols(struct xsplice_elf *elf)
+{
+    unsigned int i;
+    int rc = 0;
+
+    /*
+     * The first entry of an ELF symbol table is the "undefined symbol index".
+     * aka reserved so we skip it.
+     */
+    ASSERT(elf->sym);
+
+    for ( i = 1; i < elf->nsym; i++ )
+    {
+        uint16_t idx = elf->sym[i].sym->st_shndx;
+
+        rc = 0;
+        switch ( idx )
+        {
+        case SHN_COMMON:
+            printk(XENLOG_ERR XSPLICE "%s: Unexpected common symbol: %s\n",
+                   elf->name, elf->sym[i].name);
+            rc = -EINVAL;
+            break;
+
+        case SHN_UNDEF:
+            printk(XENLOG_ERR XSPLICE "%s: Unknown symbol: %s\n",
+                   elf->name, elf->sym[i].name);
+            rc = -ENOENT;
+            break;
+
+        case SHN_ABS:
+            dprintk(XENLOG_DEBUG, XSPLICE "%s: Absolute symbol: %s => %#"PRIx64"\n",
+                    elf->name, elf->sym[i].name,
+                    (uint64_t)elf->sym[i].sym->st_value);
+            break;
+
+        default:
+            if ( elf->sec[idx].sec->sh_flags & SHF_ALLOC )
+            {
+                elf->sym[i].sym->st_value +=
+                    (unsigned long)elf->sec[idx].load_addr;
+                if ( elf->sym[i].name )
+                    printk(XENLOG_DEBUG XSPLICE "%s: Symbol resolved: %s => #%"PRIx64"(%s)\n",
+                           elf->name, elf->sym[i].name,
+                           (uint64_t)elf->sym[i].sym->st_value,
+                           elf->sec[idx].name);
+            }
+        }
+        if ( rc )
+            break;
+    }
+
+    return rc;
+}
+
+int xsplice_elf_perform_relocs(struct xsplice_elf *elf)
+{
+    struct xsplice_elf_sec *rela, *base;
+    unsigned int i;
+    int rc = 0;
+
+    /*
+     * The first entry of an ELF symbol table is the "undefined symbol index".
+     * aka reserved so we skip it.
+     */
+    ASSERT(elf->sym);
+
+    for ( i = 1; i < elf->hdr->e_shnum; i++ )
+    {
+        rela = &elf->sec[i];
+
+        if ( (rela->sec->sh_type != SHT_RELA ) &&
+             (rela->sec->sh_type != SHT_REL ) )
+            continue;
+
+         /* Is it a valid relocation section? */
+         if ( rela->sec->sh_info >= elf->hdr->e_shnum )
+            continue;
+
+         base = &elf->sec[rela->sec->sh_info];
+
+         /* Don't relocate non-allocated sections. */
+         if ( !(base->sec->sh_flags & SHF_ALLOC) )
+            continue;
+
+        if ( elf->sec[i].sec->sh_type == SHT_RELA )
+            rc = arch_xsplice_perform_rela(elf, base, rela);
+        else /* SHT_REL */
+            rc = arch_xsplice_perform_rel(elf, base, rela);
+
+        if ( rc )
+            break;
+    }
+
+    return rc;
+}
+
 static int xsplice_header_check(const struct xsplice_elf *elf)
 {
     const Elf_Ehdr *hdr = elf->hdr;
+    int rc;
 
     if ( sizeof(*elf->hdr) > elf->len )
     {
@@ -276,6 +374,26 @@ static int xsplice_header_check(const struct xsplice_elf *elf)
         return -EOPNOTSUPP;
     }
 
+    if ( !IS_ELF(*hdr) )
+    {
+        printk(XENLOG_ERR XSPLICE "%s: Not an ELF payload!\n", elf->name);
+        return -EINVAL;
+    }
+
+    if ( hdr->e_ident[EI_CLASS] != ELFCLASS64 ||
+         hdr->e_ident[EI_DATA] != ELFDATA2LSB ||
+         hdr->e_ident[EI_OSABI] != ELFOSABI_SYSV ||
+         hdr->e_type != ET_REL ||
+         hdr->e_phnum != 0 )
+    {
+        printk(XENLOG_ERR XSPLICE "%s: Invalid ELF payload!\n", elf->name);
+        return -EOPNOTSUPP;
+    }
+
+    rc = arch_xsplice_verify_elf(elf);
+    if ( rc )
+        return rc;
+
     if ( elf->hdr->e_shstrndx == SHN_UNDEF )
     {
         dprintk(XENLOG_DEBUG, XSPLICE "%s: Section name idx is undefined!?\n",
diff --git a/xen/include/xen/xsplice.h b/xen/include/xen/xsplice.h
index 00482d0..b843b5f 100644
--- a/xen/include/xen/xsplice.h
+++ b/xen/include/xen/xsplice.h
@@ -6,6 +6,9 @@
 #ifndef __XEN_XSPLICE_H__
 #define __XEN_XSPLICE_H__
 
+struct xsplice_elf;
+struct xsplice_elf_sec;
+struct xsplice_elf_sym;
 struct xen_sysctl_xsplice_op;
 
 #ifdef CONFIG_XSPLICE
@@ -15,6 +18,33 @@ struct xen_sysctl_xsplice_op;
 
 int xsplice_op(struct xen_sysctl_xsplice_op *);
 
+/* Arch hooks. */
+int arch_xsplice_verify_elf(const struct xsplice_elf *elf);
+int arch_xsplice_perform_rel(struct xsplice_elf *elf,
+                             const struct xsplice_elf_sec *base,
+                             const struct xsplice_elf_sec *rela);
+int arch_xsplice_perform_rela(struct xsplice_elf *elf,
+                              const struct xsplice_elf_sec *base,
+                              const struct xsplice_elf_sec *rela);
+enum va_type {
+    XSPLICE_VA_RX, /* .text */
+    XSPLICE_VA_RW, /* .data */
+    XSPLICE_VA_RO, /* .rodata */
+};
+
+#include <xen/mm.h>
+void *arch_xsplice_alloc_payload(unsigned int pages, mfn_t **mfn);
+
+/*
+ * Function to secure the allocate pages (from arch_xsplice_alloc_payload)
+ * with the right page permissions.
+ */
+int arch_xsplice_secure(void *va, unsigned int pages, enum va_type types,
+                        const mfn_t *mfn);
+
+void arch_xsplice_free_payload(void *va);
+
+void arch_xsplice_init(void);
 #else
 
 #include <xen/errno.h> /* For -EOPNOTSUPP */
diff --git a/xen/include/xen/xsplice_elf.h b/xen/include/xen/xsplice_elf.h
index 3231639..1d436ad 100644
--- a/xen/include/xen/xsplice_elf.h
+++ b/xen/include/xen/xsplice_elf.h
@@ -15,6 +15,8 @@ struct xsplice_elf_sec {
                                             elf_resolve_section_names. */
     const void *data;                    /* Pointer to the section (done by
                                             elf_resolve_sections). */
+    void *load_addr;            /* A pointer to the allocated destination.
+                                      Done by load_payload_data. */
 };
 
 struct xsplice_elf_sym {
@@ -38,6 +40,9 @@ const struct xsplice_elf_sec *xsplice_elf_sec_by_name(const struct xsplice_elf *
 int xsplice_elf_load(struct xsplice_elf *elf, const void *data);
 void xsplice_elf_free(struct xsplice_elf *elf);
 
+int xsplice_elf_resolve_symbols(struct xsplice_elf *elf);
+int xsplice_elf_perform_relocs(struct xsplice_elf *elf);
+
 #endif /* __XEN_XSPLICE_ELF_H__ */
 
 /*
