mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-24 20:19:44 +00:00
145e543eb3
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20190917111441.27405-2-kraxel@redhat.com
50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
/*
|
|
* QEMU VGA Emulator templates
|
|
*
|
|
* Copyright (c) 2003 Fabrice Bellard
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
static inline uint8_t vga_read_byte(VGACommonState *vga, uint32_t addr)
|
|
{
|
|
return vga->vram_ptr[addr & vga->vbe_size_mask];
|
|
}
|
|
|
|
static inline uint16_t vga_read_word_le(VGACommonState *vga, uint32_t addr)
|
|
{
|
|
uint32_t offset = addr & vga->vbe_size_mask & ~1;
|
|
uint16_t *ptr = (uint16_t *)(vga->vram_ptr + offset);
|
|
return lduw_le_p(ptr);
|
|
}
|
|
|
|
static inline uint16_t vga_read_word_be(VGACommonState *vga, uint32_t addr)
|
|
{
|
|
uint32_t offset = addr & vga->vbe_size_mask & ~1;
|
|
uint16_t *ptr = (uint16_t *)(vga->vram_ptr + offset);
|
|
return lduw_be_p(ptr);
|
|
}
|
|
|
|
static inline uint32_t vga_read_dword_le(VGACommonState *vga, uint32_t addr)
|
|
{
|
|
uint32_t offset = addr & vga->vbe_size_mask & ~3;
|
|
uint32_t *ptr = (uint32_t *)(vga->vram_ptr + offset);
|
|
return ldl_le_p(ptr);
|
|
}
|