haraldwolff/qemu-patch-raspberry4
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Fix curses on big endian hosts

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On big endian hosts, the curses interface is unusable: the emulated
graphic card only displays garbage, while the monitor interface displays
nothing (or rather only spaces).

The curses interface is waiting for data in native endianness, so
console_write_ch() should not do any conversion. The conversion should
be done when reading the video buffer in hw/vga.c. I supposed this
buffer is in little endian mode, though it's not impossible that the
data is actually in guest endianness. I currently have no big endian
guest to way (they all switch to graphic mode immediately).

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2011-01-04 21:58:24 +01:00
parent 8a7d0890ac
commit 9ae19b657e
2 changed files with 4 additions and 4 deletions
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2
console.h
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@ -329,7 +329,7 @@ static inline void console_write_ch(console_ch_t *dest, uint32_t ch)
{
if (!(ch & 0xff))
ch |= ' ';
cpu_to_le32wu((uint32_t *) dest, ch);
*dest = ch;
}
typedef void (*vga_hw_update_ptr)(void *);

6
hw/vga.c
View file

@ -2073,14 +2073,14 @@ static void vga_update_text(void *opaque, console_ch_t *chardata)
if (full_update) {
for (i = 0; i < size; src ++, dst ++, i ++)
console_write_ch(dst, VMEM2CHTYPE(*src));
console_write_ch(dst, VMEM2CHTYPE(le32_to_cpu(*src)));
dpy_update(s->ds, 0, 0, width, height);
} else {
c_max = 0;
for (i = 0; i < size; src ++, dst ++, i ++) {
console_write_ch(&val, VMEM2CHTYPE(*src));
console_write_ch(&val, VMEM2CHTYPE(le32_to_cpu(*src)));
if (*dst != val) {
*dst = val;
c_max = i;
@ -2089,7 +2089,7 @@ static void vga_update_text(void *opaque, console_ch_t *chardata)
}
c_min = i;
for (; i < size; src ++, dst ++, i ++) {
console_write_ch(&val, VMEM2CHTYPE(*src));
console_write_ch(&val, VMEM2CHTYPE(le32_to_cpu(*src)));
if (*dst != val) {
*dst = val;
c_max = i;