diff options
Diffstat (limited to 'x86_64/xen_boothdr.S')
| -rw-r--r-- | x86_64/xen_boothdr.S | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/x86_64/xen_boothdr.S b/x86_64/xen_boothdr.S new file mode 100644 index 00000000..5208f627 --- /dev/null +++ b/x86_64/xen_boothdr.S @@ -0,0 +1,189 @@ +/* + * Copyright (C) 2006-2011 Free Software Foundation + * + * This program is free software ; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation ; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY ; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with the program ; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <xen/public/elfnote.h> + +.section __xen_guest + .ascii "GUEST_OS=GNU Mach" + .ascii ",GUEST_VERSION=1.3" + .ascii ",XEN_VER=xen-3.0" + .ascii ",VIRT_BASE=0x40000000" + .ascii ",ELF_PADDR_OFFSET=0x40000000" + .ascii ",HYPERCALL_PAGE=0x2" + .ascii ",LOADER=generic" +#ifndef MACH_PSEUDO_PHYS + .ascii ",FEATURES=!auto_translated_physmap" +#endif +#ifndef MACH_PV_PAGETABLES + .ascii "|!writable_page_tables" +#endif /* MACH_PV_PAGETABLES */ +#ifndef MACH_PV_DESCRIPTORS + .ascii "|!writable_descriptor_tables" +#endif /* MACH_PV_DESCRIPTORS */ + .byte 0 + +/* Macro taken from linux/include/linux/elfnote.h */ +#define ELFNOTE(name, type, desctype, descdata) \ +.pushsection .note.name ; \ + .align 4 ; \ + .long 2f - 1f /* namesz */ ; \ + .long 4f - 3f /* descsz */ ; \ + .long type ; \ +1:.asciz "name" ; \ +2:.align 4 ; \ +3:desctype descdata ; \ +4:.align 4 ; \ +.popsection ; + + ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz, "GNU Mach") + ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION, .asciz, "1.3") + ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION, .asciz, "xen-3.0") + ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE, .quad, _START) + ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET, .quad, _START) + ELFNOTE(Xen, XEN_ELFNOTE_ENTRY, .quad, start) + ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, .quad, hypcalls) + ELFNOTE(Xen, XEN_ELFNOTE_LOADER, .asciz, "generic") + ELFNOTE(Xen, XEN_ELFNOTE_FEATURES, .asciz, "" +#ifndef MACH_PSEUDO_PHYS + "!auto_translated_physmap" +#endif +#ifndef MACH_PV_PAGETABLES + "|!writable_page_tables" +#endif /* MACH_PV_PAGETABLES */ +#ifndef MACH_PV_DESCRIPTORS + "|!writable_descriptor_tables" +#endif /* MACH_PV_DESCRIPTORS */ + ) + +#include <mach/machine/asm.h> + +#include <i386/i386/i386asm.h> + + .text + .globl gdt, ldt + .globl start, _start, gdt +start: +_start: + + /* Switch to our own interrupt stack. */ + movq $(_intstack+INTSTACK_SIZE),%rax + andq $(~15),%rax + movq %rax,%rsp + + /* Reset EFLAGS to a known state. */ + pushq $0 + popf + + /* Push the start_info pointer to be the argument. */ + movabs $KERNELBASE,%rax + subq %rax,%rsi + movq %rsi,%r8 + + /* Fix ifunc entries */ + movq $__rela_iplt_start,%rsi + movq $__rela_iplt_end,%rdi +iplt_cont: + cmpq %rdi,%rsi + jae iplt_done + movq (%rsi),%rbx /* r_offset */ + movb 4(%rsi),%al /* info */ + cmpb $42,%al /* IRELATIVE */ + jnz iplt_next + call *(%ebx) /* call ifunc */ + movq %rax,(%rbx) /* fixed address */ +iplt_next: + addq $8,%rsi + jmp iplt_cont +iplt_done: + + movq %r8,%rdi + /* Jump into C code. */ + call EXT(c_boot_entry) + +/* Those need to be aligned on page boundaries. */ +.global hyp_shared_info, hypcalls + + .org (start + 0x1000) +hyp_shared_info: + .org hyp_shared_info + 0x1000 + +/* Labels just for debuggers */ +#define hypcall(name, n) \ + .org hypcalls + n*32 ; \ +.globl __hyp_##name ; \ +__hyp_##name: + +hypcalls: + hypcall(set_trap_table, 0) + hypcall(mmu_update, 1) + hypcall(set_gdt, 2) + hypcall(stack_switch, 3) + hypcall(set_callbacks, 4) + hypcall(fpu_taskswitch, 5) + hypcall(sched_op_compat, 6) + hypcall(platform_op, 7) + hypcall(set_debugreg, 8) + hypcall(get_debugreg, 9) + hypcall(update_descriptor, 10) + hypcall(memory_op, 12) + hypcall(multicall, 13) + hypcall(update_va_mapping, 14) + hypcall(set_timer_op, 15) + hypcall(event_channel_op_compat, 16) + hypcall(xen_version, 17) + hypcall(console_io, 18) + hypcall(physdev_op_compat, 19) + hypcall(grant_table_op, 20) + hypcall(vm_assist, 21) + hypcall(update_va_mapping_otherdomain, 22) + hypcall(iret, 23) + hypcall(vcpu_op, 24) + hypcall(set_segment_base, 25) + hypcall(mmuext_op, 26) + hypcall(acm_op, 27) + hypcall(nmi_op, 28) + hypcall(sched_op, 29) + hypcall(callback_op, 30) + hypcall(xenoprof_op, 31) + hypcall(event_channel_op, 32) + hypcall(physdev_op, 33) + hypcall(hvm_op, 34) + hypcall(sysctl, 35) + hypcall(domctl, 36) + hypcall(kexec_op, 37) + + hypcall(arch_0, 48) + hypcall(arch_1, 49) + hypcall(arch_2, 50) + hypcall(arch_3, 51) + hypcall(arch_4, 52) + hypcall(arch_5, 53) + hypcall(arch_6, 54) + hypcall(arch_7, 55) + + .org hypcalls + 0x1000 + +gdt: + .org gdt + 0x1000 + +ldt: + .org ldt + 0x1000 + +stack: + .comm _intstack,INTSTACK_SIZE + |