motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-05 16:53:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

vga: Separate LE and BE conversion functions

Browse source 
Provide different functions for converting from an LE vs a BE
framebuffer. We cannot rely on the simple cases always being
shared surfaces since cirrus will need to always shadow for
cursor emulation, so we need the full set of functions to
be able to later handle runtime switching.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>\
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Benjamin Herrenschmidt 2014-07-07 09:48:28 +10:00 • committed by Gerd Hoffmann
parent d2e043a804
commit 46c3a8c8eb
2 changed files with 113 additions and 41 deletions
Download patch file Download diff file Expand all files Collapse all files

43
hw/display/vga.c
View file

@ -1374,10 +1374,14 @@ enum {
VGA_DRAW_LINE4D2,
VGA_DRAW_LINE8D2,
VGA_DRAW_LINE8,
VGA_DRAW_LINE15,
VGA_DRAW_LINE16,
VGA_DRAW_LINE24,
VGA_DRAW_LINE32,
VGA_DRAW_LINE15_LE,
VGA_DRAW_LINE16_LE,
VGA_DRAW_LINE24_LE,
VGA_DRAW_LINE32_LE,
VGA_DRAW_LINE15_BE,
VGA_DRAW_LINE16_BE,
VGA_DRAW_LINE24_BE,
VGA_DRAW_LINE32_BE,
VGA_DRAW_LINE_NB,
};
@ -1388,10 +1392,14 @@ static vga_draw_line_func * const vga_draw_line_table[VGA_DRAW_LINE_NB] = {
vga_draw_line4d2,
vga_draw_line8d2,
vga_draw_line8,
vga_draw_line15,
vga_draw_line16,
vga_draw_line24,
vga_draw_line32,
vga_draw_line15_le,
vga_draw_line16_le,
vga_draw_line24_le,
vga_draw_line32_le,
vga_draw_line15_be,
vga_draw_line16_be,
vga_draw_line24_be,
vga_draw_line32_be,
};
static int vga_get_bpp(VGACommonState *s)
@ -1464,10 +1472,15 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
uint8_t *d;
uint32_t v, addr1, addr;
vga_draw_line_func *vga_draw_line;
#if defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
static const bool byteswap = false;
#if defined(TARGET_WORDS_BIGENDIAN)
static const bool big_endian_fb = true;
#else
static const bool byteswap = true;
static const bool big_endian_fb = false;
#endif
#if defined(HOST_WORDS_BIGENDIAN)
static const bool byteswap = !big_endian_fb;
#else
static const bool byteswap = big_endian_fb;
#endif
full_update |= update_basic_params(s);
@ -1572,19 +1585,19 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
bits = 8;
break;
case 15:
v = VGA_DRAW_LINE15;
v = big_endian_fb ? VGA_DRAW_LINE15_BE : VGA_DRAW_LINE15_LE;
bits = 16;
break;
case 16:
v = VGA_DRAW_LINE16;
v = big_endian_fb ? VGA_DRAW_LINE16_BE : VGA_DRAW_LINE16_LE;
bits = 16;
break;
case 24:
v = VGA_DRAW_LINE24;
v = big_endian_fb ? VGA_DRAW_LINE24_BE : VGA_DRAW_LINE24_LE;
bits = 24;
break;
case 32:
v = VGA_DRAW_LINE32;
v = big_endian_fb ? VGA_DRAW_LINE32_BE : VGA_DRAW_LINE32_LE;
bits = 32;
break;
}