head.S

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#include <xtf/asm_macros.h>
 
#include <arch/page.h>
 
#include <xen/elfnote.h>
 
/* Guest name and version */
ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz "XTF")
ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION, .asciz "0")
 
/* PV loader */
ELFNOTE(Xen, XEN_ELFNOTE_LOADER, .asciz "generic")
ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, _WORD hypercall_page)
 
/* Xen ABI information */
ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION, .asciz "xen-3.0")
ELFNOTE(Xen, XEN_ELFNOTE_FEATURES, .asciz "!writable_page_tables|pae_pgdir_above_4gb")
ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE, .asciz "yes")
 
        .section ".text.head", "ax", @progbits
        __ASM_SEL(.code32, .code64)
 
 /* PV entry point. */
GLOBAL(_elf_start)
 
        /* Stash the pv_start_info pointer from domain builder. */
        mov %_ASM_SI, pv_start_info
 
        /* Move onto own stack. */
        mov $boot_stack + PAGE_SIZE, %esp
 
        call xtf_main
 
        /* panic() if xtf_main manages to return. */
#ifdef __x86_64__
        lea .Lmain_err_msg(%rip), %rdi
#else
        mov $.Lmain_err_msg, %eax
#endif
        call panic
ENDFUNC(_elf_start)
 
DECLSTR(.Lmain_err_msg, "xtf_main() returned\n")
 
/*
 * Local variables:
 * tab-width: 8
 * indent-tabs-mode: nil
 * End:
 */