Obsolete for some time

src/arch/i386/core/realmode_asm.S

@@ -1,130 +0,0 @@
-/* Real-mode interface: assembly-language portions.
- *
- * Initial version by Michael Brown <mbrown@fensystems.co.uk>, January 2004.
- */
-
-#include "realmode.h"
-
-#if	1	/* CODE16 */
-	
-#define BOCHSBP xchgw %bx,%bx
-
-#define NUM_PUSHA_REGS (8)
-#define NUM_SEG_REGS (6)
-
-	.text
-	.arch i386
-	.section ".text16.nocompress", "ax", @progbits
-	.code16
-	
-	.equ	CR0_PE,1
-
-#ifdef	GAS291
-#define DATA32 data32;
-#define ADDR32 addr32;
-#define	LJMPI(x)	ljmp	x
-#else
-#define DATA32 data32
-#define ADDR32 addr32
-/* newer GAS295 require #define	LJMPI(x)	ljmp	*x */
-#define	LJMPI(x)	ljmp	x
-#endif
-
-#ifdef PXE_EXPORT
-/****************************************************************************
- * PXE CALLBACK INTERFACE
- *
- * Prepend this to rm_callback_interface to create a real-mode PXE
- * callback interface.
- ****************************************************************************
- */
-	.section ".text16", "ax", @progbits
-	.globl	pxe_callback_interface
-	.code16
-pxe_callback_interface:
-
-/* Macro to calculate offset of labels within code segment in
- * installed copy of code.
- */
-#define INSTALLED(x) ( (x) - pxe_callback_interface )
-
-/****************************************************************************
- * PXE entry points (!PXE and PXENV+ APIs)
- ****************************************************************************
- */
-	/* in_call mechanism for !PXE API calls */
-	.globl	_pxe_in_call_far
-_pxe_in_call_far:
-	/* Prepend "PXE API call" and "API version 0x201" to stack */
-	pushl	$0x201
-	jmp	1f
-	/* in_call mechanism for PXENV+ API calls */
-	.globl	_pxenv_in_call_far
-_pxenv_in_call_far:
-	/* Prepend "PXE API call" and "API version 0x200" to stack */
-	pushl	$0x200
-1:	pushl	$EB_OPCODE_PXE
-	/* Perform real-mode in_call */
-	call	pxe_rm_in_call
-	/* Return */
-	addw	$8, %sp
-	lret
-
-/****************************************************************************
- * PXE installation check (INT 1A) code
- ****************************************************************************
- */
-	.globl	_pxe_intercept_int1a
-_pxe_intercept_int1a:
-	pushfw
-	cmpw	$0x5650, %ax
-	jne	2f
-1:	/* INT 1A,5650 - Intercept */
-	popfw
-	/* Set up return values according to PXE spec: */
-	movw	$0x564e, %ax		/* AX := 564Eh (VN) */
-	pushw	%cs:INSTALLED(_pxe_pxenv_segment)
-	popw	%es			/* ES:BX := &(PXENV+ structure) */
-	movw	%cs:INSTALLED(_pxe_pxenv_offset), %bx
-	clc				/* CF is cleared */
-	lret	$2			/* 'iret' without reloading flags */
-2:	/* INT 1A,other - Do not intercept */
-	popfw
-	ljmp	%cs:*INSTALLED(_pxe_intercepted_int1a)
-
-	.globl	_pxe_intercepted_int1a
-_pxe_intercepted_int1a:	.word 0,0
-	.globl	_pxe_pxenv_location
-_pxe_pxenv_location:
-_pxe_pxenv_offset:	.word 0
-_pxe_pxenv_segment:	.word 0
-	
-pxe_rm_in_call:	
-pxe_attach_rm:
-	/* rm_callback_interface must be appended here */
-
-pxe_callback_interface_end:
-
-	.globl	_pxe_callback_interface_size
-	.equ	_pxe_callback_interface_size, pxe_callback_interface_end - pxe_callback_interface
-	.globl	pxe_callback_interface_size
-pxe_callback_interface_size:
-	.word	_pxe_callback_interface_size
-
-#else	/* PXE_EXPORT */
-	
-/* Define symbols used by the linker scripts, to prevent link errors */
-	.globl	_pxe_callback_interface_size
-	.equ	_pxe_callback_interface_size, 0	
-	
-#endif	/* PXE_EXPORT */
-
-#else	/* CODE16 */
-
-/* Define symbols used by the linker scripts, to prevent link errors */
-	.globl	_rm_callback_interface_size
-	.equ	_rm_callback_interface_size, 0	
-	.globl	_pxe_callback_interface_size
-	.equ	_pxe_callback_interface_size, 0	
-		
-#endif	/* CODE16 */