gpxe: delete long since obsolete snapshot of gPXE

gPXE has been deprecated in favor of iPXE for many, many years now.
It is much better than users get it directly from the iPXE project,
since we should no longer need any special modifications for Syslinux
use.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 0 insertions, 190 deletions

diff --git a/gpxe/src/arch/i386/interface/syslinux/com32_call.c b/gpxe/src/arch/i386/interface/syslinux/com32_call.c
deleted file mode 100644
index d2c3f918..00000000
--- a/gpxe/src/arch/i386/interface/syslinux/com32_call.c
+++ /dev/null
@@ -1,190 +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 SYSLINUX COM32 helpers
- *
- */
-
-FILE_LICENCE ( GPL2_OR_LATER );
-
-#include <stdint.h>
-#include <realmode.h>
-#include <comboot.h>
-#include <assert.h>
-#include <gpxe/uaccess.h>
-
-static com32sys_t __bss16 ( com32_regs );
-#define com32_regs __use_data16 ( com32_regs )
-
-static uint8_t __bss16 ( com32_int_vector );
-#define com32_int_vector __use_data16 ( com32_int_vector )
-
-static uint32_t __bss16 ( com32_farcall_proc );
-#define com32_farcall_proc __use_data16 ( com32_farcall_proc )
-
-uint16_t __bss16 ( com32_saved_sp );
-
-/**
- * Interrupt call helper
- */
-void __asmcall com32_intcall ( uint8_t interrupt, physaddr_t inregs_phys, physaddr_t outregs_phys ) {
-
-	memcpy_user ( virt_to_user( &com32_regs ), 0,
-	              phys_to_user ( inregs_phys ), 0,
-	              sizeof(com32sys_t) );
-
-	com32_int_vector = interrupt;
-
-	__asm__ __volatile__ (
-		REAL_CODE ( /* Save all registers */
-		            "pushal\n\t"
-		            "pushw %%ds\n\t"
-		            "pushw %%es\n\t"
-		            "pushw %%fs\n\t"
-		            "pushw %%gs\n\t"
-		            /* Mask off unsafe flags */
-		            "movl (com32_regs + 40), %%eax\n\t"
-		            "andl $0x200cd7, %%eax\n\t"
-		            "movl %%eax, (com32_regs + 40)\n\t"
-		            /* Load com32_regs into the actual registers */
-		            "movw %%sp, %%ss:(com32_saved_sp)\n\t"
-		            "movw $com32_regs, %%sp\n\t"
-		            "popw %%gs\n\t"
-		            "popw %%fs\n\t"
-		            "popw %%es\n\t"
-		            "popw %%ds\n\t"
-		            "popal\n\t"
-		            "popfl\n\t"
-		            "movw %%ss:(com32_saved_sp), %%sp\n\t"
-		            /* patch INT instruction */
-		            "pushw %%ax\n\t"
-		            "movb %%ss:(com32_int_vector), %%al\n\t"
-		            "movb %%al, %%cs:(com32_intcall_instr + 1)\n\t" 
-		            /* perform a jump to avoid problems with cache
-		             * consistency in self-modifying code on some CPUs (486)
-		             */
-		            "jmp 1f\n"
-		            "1:\n\t"
-		            "popw %%ax\n\t"
-		            "com32_intcall_instr:\n\t"
-		            /* INT instruction to be patched */
-		            "int $0xFF\n\t"
-		            /* Copy regs back to com32_regs */
-		            "movw %%sp, %%ss:(com32_saved_sp)\n\t"
-		            "movw $(com32_regs + 44), %%sp\n\t"
-		            "pushfl\n\t"
-		            "pushal\n\t"
-		            "pushw %%ds\n\t"
-		            "pushw %%es\n\t"
-		            "pushw %%fs\n\t"
-		            "pushw %%gs\n\t"
-		            "movw %%ss:(com32_saved_sp), %%sp\n\t"
-		            /* Restore registers */
-		            "popw %%gs\n\t"
-		            "popw %%fs\n\t"
-		            "popw %%es\n\t"
-		            "popw %%ds\n\t"
-		            "popal\n\t")
-		            : : );
-
-	if ( outregs_phys ) {
-		memcpy_user ( phys_to_user ( outregs_phys ), 0,
-		              virt_to_user( &com32_regs ), 0, 
-		              sizeof(com32sys_t) );
-	}
-}
-
-/**
- * Farcall helper
- */
-void __asmcall com32_farcall ( uint32_t proc, physaddr_t inregs_phys, physaddr_t outregs_phys ) {
-
-	memcpy_user ( virt_to_user( &com32_regs ), 0,
-	              phys_to_user ( inregs_phys ), 0,
-	              sizeof(com32sys_t) );
-
-	com32_farcall_proc = proc;
-
-	__asm__ __volatile__ (
-		REAL_CODE ( /* Save all registers */
-		            "pushal\n\t"
-		            "pushw %%ds\n\t"
-		            "pushw %%es\n\t"
-		            "pushw %%fs\n\t"
-		            "pushw %%gs\n\t"
-		            /* Mask off unsafe flags */
-		            "movl (com32_regs + 40), %%eax\n\t"
-		            "andl $0x200cd7, %%eax\n\t"
-		            "movl %%eax, (com32_regs + 40)\n\t"
-		            /* Load com32_regs into the actual registers */
-		            "movw %%sp, %%ss:(com32_saved_sp)\n\t"
-		            "movw $com32_regs, %%sp\n\t"
-		            "popw %%gs\n\t"
-		            "popw %%fs\n\t"
-		            "popw %%es\n\t"
-		            "popw %%ds\n\t"
-		            "popal\n\t"
-		            "popfl\n\t"
-		            "movw %%ss:(com32_saved_sp), %%sp\n\t"
-		            /* Call procedure */
-		            "lcall *%%ss:(com32_farcall_proc)\n\t"
-		            /* Copy regs back to com32_regs */
-		            "movw %%sp, %%ss:(com32_saved_sp)\n\t"
-		            "movw $(com32_regs + 44), %%sp\n\t"
-		            "pushfl\n\t"
-		            "pushal\n\t"
-		            "pushw %%ds\n\t"
-		            "pushw %%es\n\t"
-		            "pushw %%fs\n\t"
-		            "pushw %%gs\n\t"
-		            "movw %%ss:(com32_saved_sp), %%sp\n\t"
-		            /* Restore registers */
-		            "popw %%gs\n\t"
-		            "popw %%fs\n\t"
-		            "popw %%es\n\t"
-		            "popw %%ds\n\t"
-		            "popal\n\t")
-		            : : );
-
-	if ( outregs_phys ) {
-		memcpy_user ( phys_to_user ( outregs_phys ), 0,
-		              virt_to_user( &com32_regs ), 0, 
-		              sizeof(com32sys_t) );
-	}
-}
-
-/**
- * CDECL farcall helper
- */
-int __asmcall com32_cfarcall ( uint32_t proc, physaddr_t stack, size_t stacksz ) {
-	int32_t eax;
-
-	copy_user_to_rm_stack ( phys_to_user ( stack ), stacksz );
-	com32_farcall_proc = proc;
-
-	__asm__ __volatile__ (
-		REAL_CODE ( "lcall *%%ss:(com32_farcall_proc)\n\t" )
-		: "=a" (eax)
-		: 
-		: "ecx", "edx" );
-
-	remove_user_from_rm_stack ( 0, stacksz );
-
-	return eax;
-}