diff options
Diffstat (limited to 'gpxe/src/arch/i386/interface/syslinux/com32_wrapper.S')
| -rw-r--r-- | gpxe/src/arch/i386/interface/syslinux/com32_wrapper.S | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/gpxe/src/arch/i386/interface/syslinux/com32_wrapper.S b/gpxe/src/arch/i386/interface/syslinux/com32_wrapper.S deleted file mode 100644 index 5c5bd139..00000000 --- a/gpxe/src/arch/i386/interface/syslinux/com32_wrapper.S +++ /dev/null @@ -1,94 +0,0 @@ -/* - * Copyright (C) 2008 Daniel Verkamp <daniel@drv.nu>. - * - * 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 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 this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -FILE_LICENCE ( GPL2_OR_LATER ) - - .text - .arch i386 - .code32 - - .globl com32_farcall_wrapper -com32_farcall_wrapper: - - movl $com32_farcall, %eax - jmp com32_wrapper - - - .globl com32_cfarcall_wrapper -com32_cfarcall_wrapper: - - movl $com32_cfarcall, %eax - jmp com32_wrapper - - - .globl com32_intcall_wrapper -com32_intcall_wrapper: - - movl $com32_intcall, %eax - /*jmp com32_wrapper*/ /* fall through */ - -com32_wrapper: - - /* Switch to internal virtual address space */ - call _phys_to_virt - - mov %eax, (com32_helper_function) - - /* Save external COM32 stack pointer */ - movl %esp, (com32_external_esp) - - /* Copy arguments to caller-save registers */ - movl 12(%esp), %eax - movl 8(%esp), %ecx - movl 4(%esp), %edx - - /* Switch to internal stack */ - movl (com32_internal_esp), %esp - - /* Copy arguments to internal stack */ - pushl %eax - pushl %ecx - pushl %edx - - call *(com32_helper_function) - - /* Clean up stack */ - addl $12, %esp - - /* Save internal stack pointer and restore external stack pointer */ - movl %esp, (com32_internal_esp) - movl (com32_external_esp), %esp - - /* Switch to external flat physical address space */ - call _virt_to_phys - - ret - - - .data - -/* Internal gPXE virtual address space %esp */ -.globl com32_internal_esp -.lcomm com32_internal_esp, 4 - -/* External flat physical address space %esp */ -.globl com32_external_esp -.lcomm com32_external_esp, 4 - -/* Function pointer of helper to call */ -.lcomm com32_helper_function, 4 |