intwrap vbe and vga calls

This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-04-04 14:24:50 +02:00
parent 56912f57b6
commit 65936631e4
6 changed files with 244 additions and 555 deletions

View file

@ -1434,513 +1434,6 @@ FUNCTION(grub_get_rtc)
popl %ebp
ret
/*
* unsigned char grub_vga_set_mode (unsigned char mode)
*/
FUNCTION(grub_vga_set_mode)
pushl %ebp
pushl %ebx
movl %eax, %ecx
call prot_to_real
.code16
/* get current mode */
xorw %bx, %bx
movb $0x0f, %ah
int $0x10
movb %al, %dl
/* set the new mode */
movb %cl, %al
xorb %ah, %ah
int $0x10
DATA32 call real_to_prot
.code32
movb %dl, %al
popl %ebx
popl %ebp
ret
/*
* grub_vbe_bios_status_t grub_vbe_get_controller_info (struct grub_vbe_info_block *controller_info)
*
* Register allocations for parameters:
* %eax *controller_info
*/
FUNCTION(grub_vbe_bios_get_controller_info)
pushl %ebp
pushl %edi
pushl %edx
movw %ax, %di /* Store *controller_info to %edx:%di. */
xorw %ax, %ax
shrl $4, %eax
mov %eax, %edx /* prot_to_real destroys %eax. */
call prot_to_real
.code16
pushw %es
movw %dx, %es /* *controller_info is now on %es:%di. */
movw $0x4f00, %ax
int $0x10
movw %ax, %dx /* real_to_prot destroys %eax. */
popw %es
DATA32 call real_to_prot
.code32
movl %edx, %eax
andl $0x0FFFF, %eax /* Return value in %eax. */
pop %edx
popl %edi
popl %ebp
ret
/*
* grub_vbe_status_t grub_vbe_bios_get_mode_info (grub_uint32_t mode,
* struct grub_vbe_mode_info_block *mode_info)
*
* Register allocations for parameters:
* %eax mode
* %edx *mode_info
*/
FUNCTION(grub_vbe_bios_get_mode_info)
pushl %ebp
pushl %edi
movl %eax, %ecx /* Store mode number to %ecx. */
movw %dx, %di /* Store *mode_info to %edx:%di. */
xorw %dx, %dx
shrl $4, %edx
call prot_to_real
.code16
pushw %es
movw %dx, %es /* *mode_info is now on %es:%di. */
movw $0x4f01, %ax
int $0x10
movw %ax, %dx /* real_to_prot destroys %eax. */
popw %es
DATA32 call real_to_prot
.code32
movl %edx, %eax
andl $0x0FFFF, %eax /* Return value in %eax. */
popl %edi
popl %ebp
ret
/*
* grub_vbe_status_t grub_vbe_bios_set_mode (grub_uint32_t mode,
* struct grub_vbe_crtc_info_block *crtc_info)
*
* Register allocations for parameters:
* %eax mode
* %edx *crtc_info
*/
FUNCTION(grub_vbe_bios_set_mode)
pushl %ebp
pushl %ebx
pushl %edi
movl %eax, %ebx /* Store mode in %ebx. */
movw %dx, %di /* Store *crtc_info to %edx:%di. */
xorw %dx, %dx
shrl $4, %edx
call prot_to_real
.code16
pushw %es
movw %dx, %es /* *crtc_info is now on %es:%di. */
movw $0x4f02, %ax
int $0x10
movw %ax, %dx /* real_to_prot destroys %eax. */
popw %es
DATA32 call real_to_prot
.code32
movw %dx, %ax
andl $0xFFFF, %eax /* Return value in %eax. */
popl %edi
popl %ebx
popl %ebp
ret
/*
* grub_vbe_status_t grub_vbe_bios_get_mode (grub_uint32_t *mode)
*
* Register allocations for parameters:
* %eax *mode
*/
FUNCTION(grub_vbe_bios_get_mode)
pushl %ebp
pushl %ebx
pushl %edi
pushl %edx
pushl %eax /* Push *mode to stack. */
call prot_to_real
.code16
movw $0x4f03, %ax
int $0x10
movw %ax, %dx /* real_to_prot destroys %eax. */
DATA32 call real_to_prot
.code32
popl %edi /* Pops *mode from stack to %edi. */
andl $0xFFFF, %ebx
movl %ebx, (%edi)
movw %dx, %ax
andl $0xFFFF, %eax /* Return value in %eax. */
popl %edx
popl %edi
popl %ebx
popl %ebp
ret
/*
* grub_vbe_status_t grub_vbe_bios_getset_dac_palette_width (int set, int *dac_mask_size)
*
* Register allocations for parameters:
* %eax set
* %edx *dac_mask_size
*/
FUNCTION(grub_vbe_bios_getset_dac_palette_width)
pushl %ebp
pushl %ebx
xorl %ebx, %ebx
/* If we only want to fetch the value, set %bl to 1. */
testl %eax, %eax
jne 1f
incb %bl
1:
/* Put desired width in %bh. */
movl (%edx), %eax
movb %al, %bh
call prot_to_real
.code16
movw $0x4f08, %ax
int $0x10
movw %ax, %cx /* real_to_prot destroys %eax. */
DATA32 call real_to_prot
.code32
/* Move result back to *dac_mask_size. */
xorl %eax, %eax
movb %bh, %al
movl %eax, (%edx)
/* Return value in %eax. */
movw %cx, %ax
popl %ebx
popl %ebp
ret
/*
* grub_vbe_status_t grub_vbe_bios_set_memory_window (grub_uint32_t window,
* grub_uint32_t position);
*
* Register allocations for parameters:
* %eax window
* %edx position
*/
FUNCTION(grub_vbe_bios_set_memory_window)
pushl %ebp
pushl %ebx
movl %eax, %ebx
call prot_to_real
.code16
movw $0x4f05, %ax
andw $0x00ff, %bx /* BL = window, BH = 0, Set memory window. */
int $0x10
movw %ax, %dx /* real_to_prot destroys %eax. */
DATA32 call real_to_prot
.code32
movw %dx, %ax
andl $0xFFFF, %eax /* Return value in %eax. */
popl %ebx
popl %ebp
ret
/*
* grub_vbe_status_t grub_vbe_bios_get_memory_window (grub_uint32_t window,
* grub_uint32_t *position);
*
* Register allocations for parameters:
* %eax window
* %edx *position
*/
FUNCTION(grub_vbe_bios_get_memory_window)
pushl %ebp
pushl %ebx
pushl %edi
pushl %edx /* Push *position to stack. */
movl %eax, %ebx /* Store window in %ebx. */
call prot_to_real
.code16
movw $0x4f05, %ax
andw $0x00ff, %bx /* BL = window. */
orw $0x0100, %bx /* BH = 1, Get memory window. */
int $0x10
movw %ax, %bx /* real_to_prot destroys %eax. */
DATA32 call real_to_prot
.code32
popl %edi /* pops *position from stack to %edi. */
andl $0xFFFF, %edx
movl %edx, (%edi) /* Return position to caller. */
movw %bx, %ax
andl $0xFFFF, %eax /* Return value in %eax. */
popl %edi
popl %ebx
popl %ebp
ret
/*
* grub_vbe_status_t grub_vbe_bios_set_scanline_length (grub_uint32_t length)
*
* Register allocations for parameters:
* %eax length
*/
FUNCTION(grub_vbe_bios_set_scanline_length)
pushl %ebp
pushl %ebx
pushl %edx
movl %eax, %ecx /* Store length in %ecx. */
call prot_to_real
.code16
movw $0x4f06, %ax
movw $0x0002, %bx /* BL = 2, Set Scan Line in Bytes. */
int $0x10
movw %ax, %dx /* real_to_prot destroys %eax. */
DATA32 call real_to_prot
.code32
movw %dx, %ax
andl $0xFFFF, %eax /* Return value in %eax. */
popl %edx
popl %ebx
popl %ebp
ret
/*
* grub_vbe_status_t grub_vbe_bios_get_scanline_length (grub_uint32_t *length)
*
* Register allocations for parameters:
* %eax *length
*/
FUNCTION(grub_vbe_bios_get_scanline_length)
pushl %ebp
pushl %ebx
pushl %edi
pushl %edx /* Push *length to stack. */
call prot_to_real
.code16
movw $0x4f06, %ax
movw $0x0001, %bx /* BL = 1, Get Scan Line Length (in bytes). */
int $0x10
movw %ax, %dx /* real_to_prot destroys %eax. */
DATA32 call real_to_prot
.code32
popl %edi /* Pops *length from stack to %edi. */
andl $0xFFFF, %ebx
movl %ebx, (%edi) /* Return length to caller. */
movw %dx, %ax
andl $0xFFFF, %eax /* Return value in %eax. */
popl %edi
popl %ebx
popl %ebp
ret
/*
* grub_vbe_status_t grub_vbe_bios_set_display_start (grub_uint32_t x,
* grub_uint32_t y)
*
* Register allocations for parameters:
* %eax x
* %edx y
*/
FUNCTION(grub_vbe_bios_set_display_start)
pushl %ebp
pushl %ebx
movl %eax, %ecx /* Store x in %ecx. */
call prot_to_real
.code16
movw $0x4f07, %ax
movw $0x0080, %bx /* BL = 80h, Set Display Start
during Vertical Retrace. */
int $0x10
movw %ax, %dx /* real_to_prot destroys %eax. */
DATA32 call real_to_prot
.code32
movw %dx, %ax
andl $0xFFFF, %eax /* Return value in %eax. */
popl %ebx
popl %ebp
ret
/*
* grub_vbe_status_t grub_vbe_bios_get_display_start (grub_uint32_t *x,
* grub_uint32_t *y)
*
* Register allocations for parameters:
* %eax *x
* %edx *y
*/
FUNCTION(grub_vbe_bios_get_display_start)
pushl %ebp
pushl %ebx
pushl %edi
pushl %eax /* Push *x to stack. */
pushl %edx /* Push *y to stack. */
call prot_to_real
.code16
movw $0x4f07, %ax
movw $0x0001, %bx /* BL = 1, Get Display Start. */
int $0x10
movw %ax, %bx /* real_to_prot destroys %eax. */
DATA32 call real_to_prot
.code32
popl %edi /* Pops *y from stack to %edi. */
andl $0xFFFF, %edx
movl %edx, (%edi) /* Return y-position to caller. */
popl %edi /* Pops *x from stack to %edi. */
andl $0xFFFF, %ecx
movl %ecx, (%edi) /* Return x-position to caller. */
movw %bx, %ax
andl $0xFFFF, %eax /* Return value in %eax. */
popl %edi
popl %ebx
popl %ebp
ret
/*
* grub_vbe_status_t grub_vbe_bios_set_palette_data (grub_uint32_t color_count,
* grub_uint32_t start_index,
* struct grub_vbe_palette_data *palette_data)
*
* Register allocations for parameters:
* %eax color_count
* %edx start_index
* %ecx *palette_data
*/
FUNCTION(grub_vbe_bios_set_palette_data)
pushl %ebp
pushl %ebx
pushl %edi
movl %eax, %ebx /* Store color_count in %ebx. */
movw %cx, %di /* Store *palette_data to %ecx:%di. */
xorw %cx, %cx
shrl $4, %ecx
call prot_to_real
.code16
pushw %es
movw %cx, %es /* *palette_data is now on %es:%di. */
movw %bx, %cx /* color_count is now on %cx. */
movw $0x4f09, %ax
xorw %bx, %bx /* BL = 0, Set Palette Data. */
int $0x10
movw %ax, %dx /* real_to_prot destroys %eax. */
popw %es
DATA32 call real_to_prot
.code32
movw %dx, %ax
andl $0xFFFF, %eax /* Return value in %eax. */
popl %edi
popl %ebx
popl %ebp
ret
pxe_rm_entry:
.long 0