vmware.h File Reference

VMware backdoor mechanism. More...

#include <stdint.h>

Go to the source code of this file.

Macros
#define	VMW_PORT   0x5658
	VMware backdoor I/O port.
#define	VMW_MAGIC   0x564d5868 /* "VMXh" */
	VMware backdoor magic value.
#define	VMW_BACKDOOR   "inl %%dx, %%eax"
	VMware backdoor magic instruction.
#define	VMW_CMD_GET_VERSION   0x0a
	Get VMware version.
#define	VMW_CMD_GUESTRPC   0x1e
	Issue GuestRPC command.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
static	__attribute__ ((always_inline)) void vmware_cmd_get_version(uint32_t *version
	Get VMware version.
__asm__	__volatile__ (VMW_BACKDOOR :"=a"(*version), "=b"(*magic), "=c"(*product_type), "=d"(discard_d) :"0"(VMW_MAGIC), "1"(0), "2"(VMW_CMD_GET_VERSION), "3"(VMW_PORT))
int	vmware_present (void)
	Detect VMware presence.

Variables
static uint32_t *	magic
static uint32_t uint32_t *	product_type
static uint16_t	subcommand
static uint16_t uint32_t	parameter
static uint16_t uint32_t uint16_t *	edxhi = ( edx >> 16 )
static uint16_t uint32_t uint16_t uint32_t *	ebx
uint32_t	status
uint32_t	edx

Detailed Description

VMware backdoor mechanism.

Definition in file vmware.h.

Macro Definition Documentation

VMW_PORT

#define VMW_PORT   0x5658

VMware backdoor I/O port.

Definition at line 15 of file vmware.h.

Referenced by __volatile__().

VMW_MAGIC

#define VMW_MAGIC   0x564d5868 /* "VMXh" */

VMware backdoor magic value.

Definition at line 18 of file vmware.h.

Referenced by __volatile__(), and vmware_present().

VMW_BACKDOOR

#define VMW_BACKDOOR   "inl %%dx, %%eax"

VMware backdoor magic instruction.

Definition at line 21 of file vmware.h.

Referenced by __volatile__().

VMW_CMD_GET_VERSION

#define VMW_CMD_GET_VERSION   0x0a

Get VMware version.

Definition at line 24 of file vmware.h.

Referenced by __volatile__().

VMW_CMD_GUESTRPC

#define VMW_CMD_GUESTRPC   0x1e

Issue GuestRPC command.

Definition at line 27 of file vmware.h.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

__attribute__()

__attribute__ ( (always_inline) )

inlinestatic

Get VMware version.

Issue GuestRPC command.

Return values

version	VMware version(?)
magic	VMware magic number, if present
product_type	VMware product type

Parameters

channel	Channel number
subcommand	GuestRPC subcommand
parameter	Subcommand-specific parameter

Return values

edxhi	Subcommand-specific result
ebx	Subcommand-specific result
status	Command status

__volatile__()

__asm__ __volatile__

(

)

References __asm__(), magic, product_type, version, VMW_BACKDOOR, VMW_CMD_GET_VERSION, VMW_MAGIC, and VMW_PORT.

vmware_present()

int vmware_present ( void )

extern

Detect VMware presence.

Return values

rc	Return status code

Definition at line 45 of file vmware.c.

                            {
        uint32_t version;
        uint32_t magic;
        uint32_t product_type;
 
        /* Perform backdoor call */
        vmware_cmd_get_version ( &version, &magic, &product_type );
 
        /* Check for VMware presence */
        if ( magic != VMW_MAGIC ) {
                DBGC ( VMW_MAGIC, "VMware not present\n" );
                return -ENOENT;
        }
 
        DBGC ( VMW_MAGIC, "VMware product type %04x version %08x detected\n",
               product_type, version );
        return 0;
}

References DBGC, ENOENT, magic, product_type, version, and VMW_MAGIC.

Variable Documentation

magic

uint32_t* magic

Definition at line 37 of file vmware.h.

product_type

uint32_t uint32_t* product_type

Initial value:

{
        uint32_t discard_d

Definition at line 38 of file vmware.h.

Referenced by __volatile__(), and vmware_present().

subcommand

uint16_t subcommand

Definition at line 61 of file vmware.h.

parameter

uint16_t uint32_t parameter

Definition at line 61 of file vmware.h.

edxhi

* edxhi = ( edx >> 16 )

Definition at line 62 of file vmware.h.

ebx

uint16_t uint32_t uint16_t uint32_t* ebx

Initial value:

{
        uint32_t discard_a

Definition at line 62 of file vmware.h.

status

return status

Definition at line 64 of file vmware.h.

edx

uint32_t edx

Definition at line 65 of file vmware.h.