We can't pop into pc on ARMv4t when using thumb: the T bit won't be
modified if we are returning to a thumb function
Code running on ARMv4t should use the new ldrpc / ldmpc macros instead
of ldr pc, [sp], #4 and ldm(cond) sp!, {regs, pc}
No modification on pure ARM builds and ARMv5+
Note: USE_THUMB is currently never defined, no targets can currently be
built with -mthumb, see FS#6734
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26756 a1c6a512-1295-4272-9138-f99709370657
lcd_write_data() wrote twice too much pixels to the controller
The fix is the same than r22885, vertically packed 2bpp displays use
8-bits fb_data while horizontally packed 2bpp use 16-bits fb_data
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22893 a1c6a512-1295-4272-9138-f99709370657
Remove unused lcd_mono_data
Replace a loop in partial update function by asm lcd_write_data()
Remove a variable only used in this loop (x) and rename x0 to x
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22888 a1c6a512-1295-4272-9138-f99709370657
Demo plugins run fine, mpegplayer data aborts for yet unknown reasons
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22876 a1c6a512-1295-4272-9138-f99709370657
